CN106988727A - A kind of drilling well orientation sensor - Google Patents
A kind of drilling well orientation sensor Download PDFInfo
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- CN106988727A CN106988727A CN201710204684.0A CN201710204684A CN106988727A CN 106988727 A CN106988727 A CN 106988727A CN 201710204684 A CN201710204684 A CN 201710204684A CN 106988727 A CN106988727 A CN 106988727A
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- 238000005553 drilling Methods 0.000 title claims abstract description 70
- 238000005259 measurement Methods 0.000 claims abstract description 54
- 230000006698 induction Effects 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims description 8
- 238000012937 correction Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
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- 230000001360 synchronised effect Effects 0.000 claims description 3
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- 239000000306 component Substances 0.000 description 18
- 230000005484 gravity Effects 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 210000002445 nipple Anatomy 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005288 electromagnetic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 208000032365 Electromagnetic interference Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
- E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
- E21B47/0224—Determining slope or direction of the borehole, e.g. using geomagnetism using seismic or acoustic means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
One kind can realize strong antijamming capability, and precision is high, and guiding operating efficiency is high, the drilling well orientation sensor installed in the TT＆C system being connected by grafting axle with measurement while drilling instrument, including alignment sensor, magnetic azimuth compensator, and induction coil.
Description
Technical field
The present invention relates to a kind of orientation sensor for directed drilling Underwell guide tool, specifically, being related to a kind of complete
The orientation sensor of sense of rotation formula steering tool, this full rotation directional type steering tool is adapted to be incorporated into drilling well down hole drill
In device.
Background technology
In the prior art, in oil and gas well drilling engineering, directional well, horizontal well, the quantity accounting of extended reach well are got over
Come higher, the application of measurement while drilling instrument is more and more wider, at present, the most frequently used oil drilling is (wireless for MWD with drill tools
Steering tool).As rotary steerable tool, drilling rod can realize the guiding control to well track under rotation status,
Generally, rotary steerable tool is divided into drill bit pushing type and drill bit directional type by guidance mode, can be drawn by power transmission structure mode
It is divided into " drive shaft-not rotary sleeve " structure and " full rotation " structure etc., wherein full rotation directional type steering tool combines sensing
Formula is oriented to the advantage with both full rotation drilling wells, is suitable for various complicated stratum and working condition, is navigational drilling techniques
The trend of development.
Various in rotary steerable tool design research and development to appear, the AutoTrack of such as Baker Hughes Inc is drill bit
In pushing type instrument, " drive shaft-not rotary sleeve " structure of research and development, by control, rotary sleeve lifting force block does not act on well
Size and the direction with joint efforts of wall are oriented to (referring for example to patent document WO2008101020A).Rotated as drill bit directional type
The Geo-Pilot (referring for example to patent document WO2014055068A) of steering tool, such as Halliburton Company, Vad good fortune are public
The Revolution (referring for example to patent document WO2008120025A) and the PowerDrive Xceed of Schlumberger of department
(referring for example to patent document NO20061119A) etc..Wherein, the PowerDrive Xceed are " full rotation " structures, i.e., complete
Sense of rotation formula steering tool, build angle rate is corrected by the guiding and angle holding drilling pattern of alternately change, and according to ground system
The lower conduction of system is controlled to parameter.Now, vibration interference can be caused because rotary shaft is rotated, orientation be easy to when being oriented to by
It influences and causes magnetic component to produce relatively large deviation, and this is to the measurement essence for connecting measurement while drilling (MWD) instrument on the rotary shaft
Degree brings challenges.
In the prior art, there is the scheme of such a drilling well rotary steerable tool, the steering tool is placed in drilling rod
It is interior, including irrotational sleeve, the sleeve has one or more telescopic pushers, for adjusting the sleeve relative to brill
The orientation of well, is rotatably mounted with a hollow shaft in sleeve, and it limits the passage as drilling mud, and and drill bit
Connection.Wherein, in order to adjust the probing direction of drilling rig, facilitated by adjusting the pressure of the drilling mud in the hollow shaft
One or more pushers are abutted with the wall of drilling well, so as to adjust orientation of the non-rotating sleeve relative to drilling well, are adjusted simultaneously
The direction of probing.
In the prior art, it is often the case that in measurement while drilling instrument, it is disposed with for measuring orientation parameter, shaking
The measurement pipe nipple (measurement while drilling instrument is formed by multiple measurement pipe nipple concatenations) of dynamic parameter, resistivity and gamma etc., wherein, magnetic
Azimuth is one of pit shaft important parameter of measurement while drilling instrument measurement.Generally, orientation sensing is housed in measurement while drilling instrument
Core component alignment sensor in device assembly, orientation sensing device assembly contains 3 gravity accelerometers and 3 magnetic fields are passed
Sensor, 3 gravity accelerometers with 3 magnetic field sensors are orthogonal respectively is installed on sensor keel, the gravity
Acceleration transducer is used to measure gravitational acceleration component Gx, Gy, Gz, and the magnetic field sensor is used for the magnetic for measuring magnetic field of the earth
Induction component Bx, By, Bz, according to above-mentioned 6 parameters of measurement, you can to calculate the magnetic that center sensor axis is signified
Azimuth.Therefore, in the prior art, also existing such a by the way that one or more orientation sensors are connected into its rotary shaft
On measurement while drilling (MWD) instrument technical scheme, its provide relative to outer sleeve vertical direction orientation indicate, the orientation
Sensor and MWD tool are respectively mounted on the rotary shaft.Because orientation sensor is sensitive for vibration interference, electromagnetic interference is sensitive,
Thus to obtain signal from orientation sensor on the rotary shaft is installed when axle rotates is extremely difficult or even may not
, therefore, the signal and outer sleeve of orientation sensor could be obtained when can only be static in rotary shaft or slow mobile relative to brill
The orientation instruction of well, so, either discrete guiding result is obtained, or obtain the continuous steerable result of precision extreme difference.
Based on this, the application team is for drill bit directional type rotary steerable tool, especially for Schlumberger
PowerDrive Xceed full rotation directional type steering tools, it is proposed that a kind of improved full rotation directional type steering tool,
Using a kind of brand-new alignment sensor, with higher antijamming capability, borehole track can be finely controlled, greatly improved
Wellbore trajectory control precision and steerable drilling operating efficiency.
The content of the invention
In view of above-mentioned technical problem present in prior art, can be realized anti-dry it is an object of the invention to provide one kind
Disturb ability strong, precision is high, guiding operating efficiency is high, installed in the TT＆C system being connected by grafting axle with measurement while drilling instrument
Drilling well orientation sensor, and using the orientation sensor steering tool.
Specifically, the present invention provides a kind of drilling well orientation sensor, the orientation sensor includes being arranged on surveying with brill
Amount instrument connection TT＆C system rotary sleeve cylinder inwall on the alignment sensor of at least one, positioned at this at least one
Nearby and connected at least one magnetic azimuth compensator, positioned at this, the alignment sensor of at least one is attached for alignment sensor
The Part I of at least one near and connected induction coil, and at least one the described sense being installed in rotary core shaft
The Part II of coil is answered, wherein, the alignment sensor is used to provide by the magnetic azimuth compensator to the rotation
Phasing signal after the magnetic azimuth compensation of outer sleeve, is made by the coupling of the Part I and Part II of the induction coil
With transmission to ground.
According to the present invention, by the way that at least one alignment sensor is arranged on into the TT＆C system being connected with measurement while drilling instrument
Rotary sleeve cylinder inwall, make alignment sensor synchronous with the outer sleeve of TT＆C system, by induction coil transmission electromagnetic signal,
The difficulty of alignment sensor signal reception is so greatly reduced, and is substantially reduced by electromagnetic interference strength, even if by total
The electromagnetic effect of line current, can also be compensated in real time, to eliminate the disturbance for the orientation accuracy that electromagnetic interference is caused.
According to the present invention, without alignment sensor is installed in rotary core shaft, asking for discrete guiding is cleverly solved
Topic, by Inversion Calculation, substantially increases guiding accuracy.
According to the present invention, by increasing at least one set of induction coil, make the signal produced by alignment sensor while can
Supply is to the measurement while drilling instrument being connected in rotary core shaft, while promoting the transmission effect with ground signal.
According to the present invention, current loop is each respectively provided with the Part I and Part II of induction coil, signal is realized
Send and receive function, as a result, the orientation sensor need not be additionally provided power supply, it is possible to reduce need in the prior art
The trouble of loading and unloading battery.
In accordance with the present invention it is further possible to by the correcting circuit of magnetic azimuth compensator connect cut-off or shielding element come
Eliminate due to the undesirable electromagnetic noise produced by vibration, in such manner, it is possible to eliminate due to shaking that the rotation of rotary core shaft is produced
Move produced electromagnetic interference.
According to the invention, it is further possible to set TEMP close to the position of induction coil near magnetic azimuth compensator
Device, with monitor temperature near ambient electron circuit whether because rotary core shaft rotation and cause heating too high and cause positioning
Transducer sensitivity declines, and declines measurement accuracy.
According to another aspect of the present invention there is provided a kind of steering tool using above-mentioned orientation sensor, its feature exists
In, including TT＆C system, the axis of guide, the axis of guide positioned at afterbody are connected with drill bit, and guiding is provided for the drilling of drill bit, its
In, the orientation sensor is located in the TT＆C system, using the orientation sensor, carries out the ginseng such as hole angle, magnetic azimuth
Several measurements, and the direction of the axis of guide is thus adjusted, to carry out guiding operation.
According to the present invention, because the rotary steerable tool includes measurement while drilling instrument, the grafting being linked in sequence successively
Axle, turbogenerator, TT＆C system, the axis of guide, measurement while drilling instrument and the guidance system positioned at rear class are connected using grafting axle,
Wheel rotation structure is not only formed, and guiding can accurately be controlled using TT＆C system, the TT＆C system is utilized
Orientation sensor (component), carries out the measurement and calibration of the parameters such as hole angle, magnetic azimuth and tool face azimuth, and thus carries out
It is oriented to operation.
According to the invention, it is further possible to acoustic position detection device is implanted into TT＆C system, and by it and orientation sensor
Electrical connection.The acoustic position detection device includes pinger, acoustic receiver and sound wave processing unit, passes through the sound wave
Processing unit, by based on reflected in drilling well acoustic characteristic formation digital information, and convert thereof into position data transmit to
Bore survey tool.Wherein, the acoustic position detection device determines orientation reference position by the orientation sensor, and receives
And the underground sound wave that reflection is obtained is handled, to determine relative position or the distance on border with ground, therefore, it is possible to further
The position that drilling well is in object construction is determined, so as to provide foundation to be oriented to operation.
Brief description of the drawings
The present invention is described in detail with embodiment below with reference to accompanying drawings, wherein：
Fig. 1 is the schematic diagram for the rotary steerable tool for showing the specific embodiment of the invention；
Fig. 2 is the schematic diagram of the orientation sensor used in the rotary steerable tool for show the specific embodiment of the invention；
Fig. 3 is the magnetic azimuth of the orientation sensor used in the rotary steerable tool for show the specific embodiment of the invention
The schematic diagram of compensator.
Embodiment
Below, the present invention is explained in detail using embodiment, those skilled in the art will recognize that the explanation is
Exemplary, and it is non-limiting, protection scope of the present invention is not limited among embodiment.
Conventional oil drilling has MWD (wireless measuring instrument while drilling), LWD (wireless drilling logging instrument), RSS with driller
(rotary steerable drilling system) etc., in the measurement while drilling instrument, is generally disposed with for measuring orientation parameter, vibration ginseng
The measurement pipe nipple (measurement while drilling instrument is formed by multiple measurement pipe nipple concatenations) of number, resistivity and gamma etc., wherein, magnetic azimuth
Angle is one of pit shaft important parameter of measurement while drilling instrument measurement.Generally, orientation sensing device assembly is housed in measurement while drilling instrument,
Core component alignment sensor in orientation sensing device assembly contains 3 gravity accelerometers and 3 magnetic field sensors, should
3 gravity accelerometers with 3 magnetic field sensors are orthogonal respectively is installed on sensor keel, the acceleration of gravity is passed
Sensor is used to measure gravitational acceleration component Gx, Gy, Gz, and the magnetic field sensor is used for the magnetic induction intensity for measuring magnetic field of the earth
Component Bx, By, Bz, according to above-mentioned 6 parameters of measurement, you can to calculate the magnetic azimuth that center sensor axis is signified.
Magnetic azimuth is easily influenceed by outside magnetic disturbance, and magnetic disturbance is stronger, and the measurement error of magnetic azimuth is bigger.
For general MWD tool, orientation sensor is installed on the bottom of downhole measurement tools combination, upper circuit pair
The influence of orientation sensor magnetic azimuth can be neglected.It is more next with the function of drill tools with the development of oil drilling technology
It is more, not only measure, while to be also controlled operation, the present invention is off the beaten track, and orientation sensor is installed on and passed through
On the TT＆C system that grafting axle is connected with the survey tool, entered by survey tool from bus to downhole tool and TT＆C system
Row power supply and communication, evade a series of electromagnetic interferences by installing magnetic azimuth compensator.Now, when downhole system works
When, magnetic field can be produced by flowing through the DC current of bus, can be changed the magnetic field environment of orientation sensor position, be made orientation sensing
The error of device measurement magnetic azimuth becomes big, now, and magnetic component is surveyed to orientation sensor and carries out verification compensation, straight to eliminate bus
The measurement accuracy of magnetic azimuth is improved in magnetic field produced by stream electric current to the measurement error of magnetic azimuth.On the other hand, due to rotation
The vibration that the rotation of core axle is produced can produce electromagnetic interference, by connecting shielding or cut off member in magnetic azimuth compensator
To eliminate similar noise.In addition, also by setting induction coil, the positioning signal of orientation sensor is sent into ground.
As described above, the error that the magnetic field produced by bus DC current makes orientation sensor measure magnetic azimuth becomes big,
The error is magnetic azimuth main source of error, and it can make the measurement error of magnetic azimuth into multiple increase, and this is also existing skill
It is difficult to the reason for having big breakthrough on guiding accuracy is oriented in art.The problem of present invention solves so well, improves fixed
To the measurement accuracy of sensor, the accurate measurement to magnetic azimuth is realized.
Fig. 1 is the schematic diagram for the rotary steerable tool for showing the specific embodiment of the invention.
In the specific embodiment of the invention, rotary steerable tool include be linked in sequence successively measurement while drilling instrument 1,
Grafting axle 2, turbogenerator 3, TT＆C system 4, the axis of guide 6, the axis of guide 6 positioned at afterbody are connected with drill bit 7, are drill bit
7 drilling provides guiding.The measurement while drilling instrument 1 itself can include the measurement pipe nipple such as orientation parameter, resistivity, while real
The function that existing underground survey data are earthward uploaded.Grafting axle 2 is used to connect measurement while drilling instrument 1 and the guiding system positioned at rear class
System, by setting mortise and tenon bayonet arrangement respectively at two ends, measurement while drilling instrument 1 and the guidance system clamping of rear class with front end,
To form wheel rotation structure.The guidance system of the rear class includes turbogenerator 3, TT＆C system 4, axis of guide 6 etc., the whirlpool
Turbine 3 is whole survey tool 1, TT＆C system 4, the offer electric power of the axis of guide 6.The TT＆C system 4 includes orientation sensing
Device (component) 5, using the orientation sensor 5, carries out the measurement of the parameters such as hole angle, magnetic azimuth, and thus adjust the axis of guide
Direction, to carry out guiding operation.
According to the invention, it is further possible to acoustic position detection device (not shown) is implanted into TT＆C system 4, and by it with determining
Electrically connected to sensor 5.The acoustic position detection device includes pinger, acoustic receiver and sound wave processing unit, leads to
The sonicated device is crossed, digital information will be formed based on the acoustic characteristic reflected in drilling well, and convert thereof into positional number
According to transmitting to measurement while drilling instrument.Wherein, the acoustic position detection device determines orientation reference bit by the orientation sensor 5
Put (position can be particular moment rotation position, i.e., the position measured by local gravitational vertical, or others are inclined
Oblique position), and receive and handle the obtained underground sound wave of reflection, with determine with the relative position on ground or border away from
From therefore, it is possible to further determine that position of the drilling well in object construction, so as to provide foundation to be oriented to operation.
Fig. 2 is the schematic diagram of the orientation sensor used in the rotary steerable tool for show the specific embodiment of the invention.
As shown in Fig. 2 the orientation sensor 5 includes being arranged on the rotation for the TT＆C system 4 being connected with measurement while drilling instrument 1
The alignment sensor 9 of at least one on outer sleeve inwall, positioned at this, the alignment sensor 9 of at least one is neighbouring and is connected thereto
At least one magnetic azimuth compensator 10, positioned at this alignment sensor 9 of at least one nearby and connected at least one
The Part I 11 of individual induction coil, and at least one induction coil being installed in rotary core shaft 13 Part II
12, wherein, the alignment sensor 9 is used to provide the magnetic side by 10 pairs of the magnetic azimuth compensator rotary sleeve cylinder
Parallactic angle compensation after phasing signal, by the coupling of the Part I 11 and Part II 12 of the induction coil send to
Ground.
Multiple propellers 8 are installed outside the rotary sleeve cylinder of the TT＆C system 4, it can be promoted to drilling well wall portion,
It can also be shunk to rotary core shaft direction, adjust the probing direction for driving drill bit according to directional control signal with this.
According to the specific embodiment of the invention, by the way that at least one alignment sensor 9 is arranged on and measurement while drilling instrument 1
The rotary sleeve cylinder inwall of the TT＆C system 4 of connection, makes alignment sensor 9 synchronous with the outer sleeve of TT＆C system, passes through sensing
Coil 11,12 transmits electromagnetic signal, so greatly reduces the difficulty of alignment sensor signal reception, and strong by electromagnetic interference
Degree is substantially reduced, even if by the electromagnetic effect of bus current, can also compensate in real time, is caused with to eliminate electromagnetic interference
The disturbance of orientation accuracy.
In the present invention, the Part I 11 and Part II 12 of the induction coil, which can be respectively wound around iron core, (does not scheme
Show) on, the iron core is preferably permanent magnet, and several are angularly set to around rotary core shaft 13, so, in rotary core
When axle 13 rotates, voltage is produced by cutting magnetic line, then rectification is carried out by the way that rectifier is (not shown), to provide enough
Power be used for encourage alignment sensor 9, the signal obtained from alignment sensor 9 (is not schemed by MODEL or CTRL devices
Show) Part I 11 of the induction coil is sent to, afterwards when Part II 12 is leaned on each rotation of rotary core shaft
Send to Part II 12, be then sent to by the Part II 12 on measurement while drilling instrument 1 during nearly Part I 11, so that
Ground is uploaded to, now, even if relatively large deviation occur in rotary sleeve cylinder and rotating speed and the rotating speed of rotary core shaft, because isogonism
Degree is provided with multiple such coupling coils, thus it is possible to which interference-free sends out phasing signal.
Fig. 3 is the magnetic azimuth of the orientation sensor used in the rotary steerable tool for show the specific embodiment of the invention
The schematic diagram of compensator.
Magnetic azimuth compensator 10 of the present invention is described in detail referring to Fig. 3.
Magnetic azimuth compensator 10 of the present invention can be constituted using conventional magnetic azimuth compensation circuit.As shown in figure 3, described
Magnetic azimuth compensation circuit is generally made up of magnetic azimuth correction unit and Inversion Calculation portion two parts, and magnetic azimuth correction unit includes
Bus current measuring circuit and correcting circuit.In the environment of without magnetic disturbance, measurement while drilling instrument 1 is lain in a horizontal plane in into no magnetic dragon
On bone, and it is connected, is powered by constant voltage DC bus to measurement while drilling instrument with orientation sensor 5, bus current measuring circuit.
In the specific embodiment of the invention, the orientation sensor 5 contains 3 gravity accelerometers and 3 magnetic field sensors,
The number respective coordinates dimension of the sensor can be with unrestricted choice, and generally, it is respectively 3 that quantity is selected in cartesian coordinate system
It is individual, 5 or 6 etc. can also be selected.Correspondence is respectively the occasion of 3 sensors, is I by the electric current for flowing through bus, respectively
Take three current components I1, I2, I3, measure 3 component values corresponding to each magnetic component sensor respectively, i.e. Bx=(Bx1,
Bx2, Bx3), By=(By1, By2, By3), Bz=(Bz1, Bz2, Bz3), magnetic component Bx, By, the Bz measured during setting I1=0
For the magnetic component without magnetic disturbance, I2 is set as the half of actual bus electric current, and I3 is set as the maximum of actual bus electric current, by
This obtains correction value Bx '=(0, Bx1-Bx0, Bx2-Bx0), By '=(0, By1-By0, the By2- of each magnetic component sensor
By0), Bz '=(0, Bz1-Bz0, Bz2-Bz0), according to magnetic azimuth Az calculation formula, Az=Arctan (BzGy-ByGz) G/
(Bx(Gy2+Gz2)-ByGxGy-BzGxGz), you can draw the magnetic azimuth where orientation sensor.Wherein, acceleration of gravity G
=(Gx2+Gy2+Gz2)1/2, Gx, Gy, Gz are the three axle gravitational acceleration components that orientation sensor is measured.
According to the present invention, by the bus current measuring circuit of magnetic azimuth compensator, the real-time current in bus is measured,
Bus current I and Bx, By, Bz three-axle magnetic field component variation relation are found, Bx, By, Bz three-axle magnetic field component are compensated,
Then the counter circuit in Inversion Calculation portion is utilized, magnetic azimuth is calculated with Bx, By, Bz three-axle magnetic field component after the compensation
Az, so as to obtain the real magnetic azimuth of orientation sensor position.
As described above, the measurement and calculating made in the specific embodiment of the invention with three dimensionality coordinate system, in fact, right
For the orientation of description logging tool is improved, it usually needs consider 5 kinds of coordinate systems.Generally, the aspect on stratum is
Inclination aspect, the Z axis between bed plane normal and absolute reference system is inconsistent, and the Z axis of absolute reference system points to earth weight
Force direction, that is, the vertically downward direction being commonly called as, and then there is an angle amount therewith in the Z axis of other referentials, because this does not belong to
The emphasis discussed in the present invention, so repeating no more.
In accordance with the present invention it is further possible to by the correcting circuit of magnetic azimuth compensator connect cut-off or shielding element come
Eliminate due to the undesirable electromagnetic noise produced by vibration, in such manner, it is possible to eliminate due to shaking that the rotation of rotary core shaft is produced
Move produced electromagnetic interference.
According to the invention, it is further possible to set TEMP close to the position of induction coil near magnetic azimuth compensator
Device, with monitor temperature near ambient electron circuit whether because rotary core shaft rotation and cause heating too high and cause positioning
Transducer sensitivity declines, and declines measurement accuracy.
Detailed description has been made to the present invention above by embodiment, however, these descriptions are non-limiting,
Those skilled in the art will recognize that the present invention can carry out miscellaneous modification and change, without departing from spirit of the invention and
In teachings, these modifications and change shall fall within protection scope of the present invention, and protection scope of the present invention is by institute
Attached claims are limited.
Claims (8)
1. a kind of drilling well orientation sensor, it is characterised in that including
The orientation sensing of at least one on the rotary sleeve cylinder inwall for the TT＆C system being connected with measurement while drilling instrument
Device,
Positioned at this near alignment sensor of at least one and at least one connected magnetic azimuth compensator,
Positioned at this near alignment sensor of at least one and at least one connected induction coil Part I, and
The Part II at least one induction coil being installed in rotary core shaft,
Wherein, the alignment sensor is used to provide the magnetic azimuth to rotary sleeve cylinder by the magnetic azimuth compensator
Phasing signal after angle compensation, is sent to ground by the coupling of the Part I and Part II of the induction coil.
2. drilling well orientation sensor as claimed in claim 1, it is characterised in that pass through at least one alignment sensor by described in
Be arranged on the TT＆C system being connected with the measurement while drilling instrument rotary sleeve cylinder inwall, make the alignment sensor with
The outer sleeve of the TT＆C system is synchronous, and electromagnetic signal is transmitted by least one described induction coil.
3. drilling well orientation sensor as claimed in claim 1, it is characterised in that the Part I of the induction coil and second
Part is each respectively provided with current loop, and that realizes signal sends and receives function.
4. drilling well orientation sensor as claimed in claim 1, it is characterised in that pass through the correction electricity in magnetic azimuth compensator
Cut-off or shielding element is connected in road to eliminate due to the undesirable electromagnetic noise produced by vibration.
5. drilling well orientation sensor as claimed in claim 1, it is characterised in that close to sensing near magnetic azimuth compensator
The position of coil sets temperature sensor, to monitor the temperature near ambient electron circuit.
6. a kind of steering tool of any one of use the claims 1~5 orientation sensor, it is characterised in that including
TT＆C system, the axis of guide, the axis of guide positioned at afterbody are connected with drill bit, and guiding is provided for the drilling of drill bit, wherein, it is described
Orientation sensor is located in the TT＆C system, using the orientation sensor, carries out the survey of the parameters such as hole angle, magnetic azimuth
Amount, and the direction of the axis of guide is thus adjusted, to carry out guiding operation.
7. steering tool as claimed in claim 6, it is characterised in that acoustic position detection dress is implanted into the TT＆C system
Put, and it is electrically connected with the orientation sensor.
8. steering tool as claimed in claim 7, it is characterised in that the acoustic position detection device includes pinger, sound
Ripple receiver and sound wave processing unit, by the sonicated device, will form number based on the acoustic characteristic reflected in drilling well
Word information, and convert thereof into position data and transmit to the measurement while drilling instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109695416A (en) * | 2018-12-04 | 2019-04-30 | 淮北杨柳煤业有限公司 | Convenient for the guide rod of real-time detection when a kind of drilling |
| CN109973076A (en) * | 2019-04-10 | 2019-07-05 | 中煤科工集团西安研究院有限公司 | Visible detection device and method in underground coal mine borehole |
| CN111894562A (en) * | 2020-06-09 | 2020-11-06 | 中国科学院地质与地球物理研究所 | Signal transmission method and system for rotary steerable drilling tool |
| CN112343580A (en) * | 2019-08-07 | 2021-02-09 | 北京迈斯康特测控技术有限公司 | A probe skeleton |
| CN113671263A (en) * | 2020-05-14 | 2021-11-19 | 中国石油化工股份有限公司 | Method and system for detecting downhole magnetic interference of measurement-while-drilling operations |
| CN116146193A (en) * | 2023-04-21 | 2023-05-23 | 中国地质大学（北京） | System and method for multi-source information monitoring while drilling and transmission of complex formations in deep ground engineering |
| WO2025236639A1 (en) * | 2024-05-11 | 2025-11-20 | 中国石油天然气集团有限公司 | While-drilling acoustic auto-tracking wellbore tool and method for using same |
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| CN109695416B (en) * | 2018-12-04 | 2020-09-22 | 淮北杨柳煤业有限公司 | Guide rod convenient for real-time detection during drilling |
| CN109973076A (en) * | 2019-04-10 | 2019-07-05 | 中煤科工集团西安研究院有限公司 | Visible detection device and method in underground coal mine borehole |
| CN112343580A (en) * | 2019-08-07 | 2021-02-09 | 北京迈斯康特测控技术有限公司 | A probe skeleton |
| CN113671263B (en) * | 2020-05-14 | 2024-04-30 | 中国石油化工股份有限公司 | Method and system for detecting downhole magnetic interference for measurement while drilling operations |
| CN113671263A (en) * | 2020-05-14 | 2021-11-19 | 中国石油化工股份有限公司 | Method and system for detecting downhole magnetic interference of measurement-while-drilling operations |
| WO2021248867A1 (en) * | 2020-06-09 | 2021-12-16 | 中国科学院地质与地球物理研究所 | Signal transmission method for rotary guided well drilling tool, and system |
| CN111894562B (en) * | 2020-06-09 | 2021-05-04 | 中国科学院地质与地球物理研究所 | Signal transmission method and system for rotary steerable drilling tool |
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| CN111894562A (en) * | 2020-06-09 | 2020-11-06 | 中国科学院地质与地球物理研究所 | Signal transmission method and system for rotary steerable drilling tool |
| CN116146193A (en) * | 2023-04-21 | 2023-05-23 | 中国地质大学（北京） | System and method for multi-source information monitoring while drilling and transmission of complex formations in deep ground engineering |
| CN116146193B (en) * | 2023-04-21 | 2023-09-08 | 中国地质大学（北京） | System and method for monitoring and transmitting multi-source information of complex stratum of deep engineering while drilling |
| WO2025236639A1 (en) * | 2024-05-11 | 2025-11-20 | 中国石油天然气集团有限公司 | While-drilling acoustic auto-tracking wellbore tool and method for using same |
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