WO2020256723A1 - Procédé de synchronisation de tracteur de fond de trou et de déploiement de treuil - Google Patents

Procédé de synchronisation de tracteur de fond de trou et de déploiement de treuil Download PDF

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Publication number
WO2020256723A1
WO2020256723A1 PCT/US2019/038025 US2019038025W WO2020256723A1 WO 2020256723 A1 WO2020256723 A1 WO 2020256723A1 US 2019038025 W US2019038025 W US 2019038025W WO 2020256723 A1 WO2020256723 A1 WO 2020256723A1
Authority
WO
WIPO (PCT)
Prior art keywords
tractor
winch
wireline
speed
tension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2019/038025
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English (en)
Inventor
Wesley Neil Ludwig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Halliburton Energy Services Inc
Original Assignee
Halliburton Energy Services Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Publication of WO2020256723A1 publication Critical patent/WO2020256723A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/008—Winding units, specially adapted for drilling operations
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • 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
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/023—Arrangements for connecting cables or wirelines to downhole devices

Definitions

  • the present disclosure relates generally to the field of oil and gas production and more specifically to methods for running tools into a deviated wellbore with the use of a wireline tractor.
  • the present disclosure further relates to methods for synchronizing a wireline tractor with the relevant wireline winch deployment to avoid line slack and/or wasted power and traction.
  • FIG. 1 illustrates a land-based oil and gas rig including a downhole wireline tractor system in an embodiment of the present disclosure.
  • FIG. 2 illustrates an example of a winch/tractor arrangement according to an embodiment of the present disclosure.
  • FIG. 3 illustrates an example of a winch/tractor arrangement according to an embodiment of the present disclosure.
  • FIG. 4 illustrates an example of a winch/tractor arrangement according to an embodiment of the present disclosure.
  • FIG. 5 is a block flow diagram of a method to synchronize a tractor and winch operation, in accordance with an embodiment of the present disclosure.
  • a tool may be described as being below or downhole from a crossover.
  • the tool will actually be located below the crossover.
  • the tool may be horizontally displaced from the crossover, but will be farther from the surface location of the well as measured through the well.
  • Downhole or below as used herein refers to a position in a well farther from the surface location in the well.
  • the present disclosure relates generally to the field of oil and gas exploration and production and more specifically to methods for running tools into a deviated wellbore with the use of a wireline tractor.
  • the present disclosure further relates to methods for synchronizing a wireline tractor with the relevant wireline winch deployment to avoid wireline slack and/or wasted power and traction.
  • wireline shall be meant to construe a wireline cable, a slickline, a coiled tubing string, or any other conveyance line that is run into a well to deliver a tool or measurement item.
  • the tool or measurement item can include a tractor affixed to the wireline that is used to convey the tool or measurement item into a deviated wellbore where gravity alone is insufficient to position the tool or measurement item to the desired location.
  • the term“nominal” shall be meant to construe a value that is not absolute but can have some variation thereto.
  • the phrase“same nominal speed” would mean that the two items being compared have approximately the same speed, but not necessarily identical speeds. The speeds may vary for example by 2%, so the speeds are not identical but are nonetheless a close approximation of the same speed. If a tractor and winch are said to have the same nominal speed, it can mean that the tractor and winch speeds substantially match each other.
  • the phrase “same nominal time” would mean that the two events being compared are done at approximately the same time, but not necessarily at precisely the same time. The times may vary for example by a few seconds, so the times are not identical, but are nonetheless a close approximation of the same time.
  • the tractor movement and winch movement are synchronized, as further described below, for the most effective use of the equipment and to avoid problems that can occur if the movements are sufficiently different.
  • the disclosure may avoid a situation where the tractor runs faster than the winch, in which case the tractor would otherwise be pulling against the winch, wasting power and traction that could otherwise be utilized for conveying the payload. It may also avoid a situation where the winch is running appreciably faster than the tractor, in which case slack in the wireline can build up in the hole and the wireline could tangle or cause depth control problems.
  • FIG. 1 a land-based rig 100 including a winch 120, wireline 122 and tractor 130 operational system in an illustrative wellbore application, according to the one or more embodiments. It should be noted that, even though FIG. 1 depicts a land-based rig 100, the exemplary winch 120 and tractor 130 operational system, and its various embodiments disclosed herein, are equally well suited for use in or on other types of rigs, such as offshore platforms or rigs arranged in any other geographical location.
  • FIG. 1 depicts a land-based rig 100 includes a platform 102 that supports a derrick 104 having a traveling block 106 for raising and lowering items into and out of a wellbore 110.
  • a wireline 122 extending from a winch 120 conveys a tool string 140 into the wellbore 110 and into a desired formation 112.
  • the tool string 140 is assisted in reaching into the distal end of the wellbore 110 with the help of a tractor device 130.
  • the winch 120 controls the speed that the wireline 122 is rolled on/off the winch and into/out of the wellbore 110.
  • the tractor 130 can expend energy to pull the tool string 140 into the distal end of the wellbore 110.
  • An optional control/information center 124 can monitor and control the winch 120 operation.
  • FIG. 2 illustrated is an example of a winch 120, wireline 122 and tractor 130 arrangement 200 when a tractor speed 202 is greater than the corresponding winch speed 204 resulting in a tight wireline 206.
  • This scenario results in a waste of power and traction as the tractor 130 is working harder than necessary to convey the tool string 140 to the desired position.
  • FIG. 3 illustrated is an example of a winch 120, wireline 122 and tractor 130 arrangement 200 when a tractor speed 202 is running at the same speed as the corresponding winch speed 204, resulting in a small amount of slack in the wireline 208.
  • This scenario avoids excessive wireline pull as the tractor 130 is working no more than is necessary to convey the tool string 140 to the desired position.
  • This scenario avoids excessive wireline pull as well as excessive slack.
  • FIG. 4 illustrated is an example of a winch 120, wireline 122 and tractor 130 arrangement 200 when a tractor speed 202 is less than the corresponding winch speed 204.
  • This scenario results in an excessive and ever increasing slack in the wireline 210.
  • this lack of tension in the wireline may result in knotting, unwinding of braided cable, entanglement of the wireline with a tractor or other downhole tools or a variety of other undesirable conditions.
  • Such inadequate wireline tension can occur through a deviated well where slack in the wireline may accumulate near the "elbow" transition between the vertical and horizontal well sections.
  • a wireline may be of sufficient tension in a vertical well section due to its own weight, but this same wireline may actually be in a low or even zero tension state within the horizontal well section near, and downhole of, the noted elbow.
  • FIG. 5 illustrated is a block diagram of a method to synchronize the tractor and winch operations, according to one or more embodiments of the disclosure.
  • An embodiment of the present disclosure is a method of synchronizing a winch and tractor operation to minimize tractor pull on the winch and prevent excessive amounts of slack in the wireline.
  • the method involves operating the winch and tractor at nominally the same speeds. Instead of adjusting the winch speed to match the tractor, the tractor speed is adjusted to match the winch.
  • a tractor speed can be precisely adjusted by sending commands to the tractor from the surface system. After the winch and tractor have been started to approximately the same nominal speed, the tractor speed will be adjusted to match the winch speed.
  • the tractor is powered by use of conductors in a wireline capable of sending power of a useful quantity through the wireline to the tractor while control and data signals are also sent over the wireline.
  • the tractor is powered by batteries that are located within or adjacent to the tractor, while control and data signals are sent over the digital slickline, such as the RelayTM Digital Slickline System offered by Halliburton ⁇ or alternate data transmission system for tractor control.
  • the tension in the wireline will be relatively unchanging. If this is observed the tractor speed can be incrementally increased until the wireline tension starts to increase. Because the tractor speed was incrementally increased to match the winch speed, the tractor is now moving at a bounded amount faster than the winch.
  • Non-limiting examples of an acceptable error band can be plus or minus 1% of the value, optionally plus or minus 2% of the value, optionally plus or minus 3% of the value, optionally plus or minus 5% of the value, optionally plus or minus 10% of the value, optionally plus or minus 15% of the value.
  • the tractor may be slightly outrunning the winch, which would be evidenced by an increase in wireline tension.
  • the tractor can be slowed down a small amount for a short period of time to correct for this increase in wireline tension. This action should result in a drop in wireline tension when the slack is added. For example, if the tractor speed is incrementally decreased by 1 ft/min for a 1 minute interval and then returned to the previous speed, then 1 foot of slack should be introduced between the winch and the tractor resulting in a reduction or elimination of the increase in wireline tension that was observed. This can be repeated until a stabilization or decrease in wireline tension is noted.
  • Non-limiting examples of an increase in wireline tension can be an increase of 1% of the wireline tension value, optionally an increase of 2% of the value, optionally an increase of 3% of the value, optionally an increase of 5% of the value, optionally an increase of 10% of the value.
  • the tractor may be moving slightly slower than the winch. This may be evidenced by unchanging wireline tension and is an indication of slack in the wireline.
  • the tractor speed can be increased a small amount for a short period of time to take slack out of the wireline. For example, if the tractor speed is incrementally increased by 1 ft/min for a 1 minute interval and then returned to the previous speed, then 1 foot of slack should be removed between the winch and the tractor. This can be done until an increase in wireline tension is observed.
  • the wireline tension can indicate when the slack has just been removed.
  • a counter can be zeroed at this point. The counter can track the difference between the amount of wireline spooled by the winch system and the distance the tractor should have moved as calculated by the tractor running speed and time interval. Alternately the counter can track the difference between the amount of wireline spooled by the winch system and the actual distance the tractor moved as measured by a measurement means associated with the tool string. If the winch started running faster than the tractor it should be detected by this counter, as it may not show up on the tension.
  • the current disclosed method of operating a variable speed tractor makes it easier to synchronize the tractor and winch to the same speed, without undue slack in the wireline.
  • the current disclosed method increases the reliability of successfully conveying a payload and increases the accuracy of depth control of the tractor during conveyance.
  • the following steps can be followed: (a) When it is required to start tractor conveyance, the tractor and winch will be started at the same nominal speed. The exact speeds of the winch deployment of the wireline and the tractor are likely to differ at this point in time (b) Adjust the speed of the tractor in small increments up or down to match the winch using a wireline tension as an indicator of when the tractor is pulling against the winch and guiding whether the tractor needs to speed up or slow down. A reading of downhole wireline tension is desirable and should be a better indication than a reading of wireline tension at the winch.
  • a GUI Graphic User Interface
  • the GUI could include buttons to Remove 1 ft of slack and Add 1 ft of slack (d) Monitor wireline tension.
  • a counter can be used that is zeroed when the wireline tension confirms that adding and removing slack indicates there is no slack in the wireline. The counter can track the difference in measured winch movement and calculated or measured tractor movement, to indicate when synchronization might be compromised.
  • An embodiment of the method for synchronizing downhole tractor and surface winch deployment includes taking downhole wireline tension readings.
  • An embodiment of the method for synchronizing downhole tractor and surface winch deployment includes taking measured downhole tractor movement readings.
  • An embodiment of the method for synchronizing downhole tractor and surface winch deployment includes deploying both the tractor and winch at the same nominal speed, obtaining readings of wireline tension, to indicate whether the tractor needs to speed up or slow down, and adjusting the speed of the tractor in small increments to match the winch speed.
  • the wireline tension readings can be downhole wireline tension readings, which can be observed as an indicator of obtaining substantially matching tractor and winch speeds. If the tractor and winch speeds are substantially matched, periodically adding and/or removing slack while observing the wireline tension can be used to confirm the tractor and winch are still synchronized.
  • a real-time downhole wireline tension transmitter can be used for transmitting wireline tension information.
  • a counter can be implemented that can be zeroed when the wireline tension confirms that adding and removing slack indicates there is no slack in the wireline.
  • An optional information handling system can be used to track readings and establish patterns to better monitor the operation.
  • a controller in communication with the tractor and the wireline tension readings can be used to adjust the tractor speed in response to indications when synchronization might be compromised.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Mechanical Engineering (AREA)
  • Electric Cable Installation (AREA)

Abstract

Selon l'invention, un procédé et un système de synchronisation de tracteur de fond de trou et de déploiement de treuil de surface consistent à déployer un tracteur et à déploiement d'un câble métallique à partir d'un treuil, l'obtention de lectures de tension de câble métallique, et le réglage de la vitesse du tracteur pour correspondre à la vitesse de treuil. Si les vitesses de tracteur et de treuil apparaissent sensiblement appariées, l'ajout et/ou l'élimination périodique du mou dans le câble métallique tout en observant la tension du câble métallique peuvent confirmer si le tracteur et le treuil sont encore synchronisés.
PCT/US2019/038025 2019-06-19 2019-06-19 Procédé de synchronisation de tracteur de fond de trou et de déploiement de treuil Ceased WO2020256723A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/446,243 US20200399968A1 (en) 2019-06-19 2019-06-19 Method for Synchronizing Downhole Tractor and Winch Deployment
US16/446,243 2019-06-19

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WO2020256723A1 true WO2020256723A1 (fr) 2020-12-24

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WO (1) WO2020256723A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2019472431B2 (en) * 2019-10-30 2025-05-29 Halliburton Energy Services, Inc. Method for reducing stick-slip in logging tools
CN113123764B (zh) * 2021-03-31 2022-03-15 北京大德广源石油技术服务有限公司 基于井下张力的控速泵送射孔系统及电缆式桥射联作方法
US12331603B1 (en) 2024-07-17 2025-06-17 Halliburton Energy Services, Inc. Methods and apparatus to decouple downhole tool speed from conveyance tools

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080216554A1 (en) * 2007-03-07 2008-09-11 Mckee L Michael Downhole Load Cell
US20100319910A1 (en) * 2009-06-18 2010-12-23 Sebastien Ives Drum Load Monitoring
US20130138254A1 (en) * 2010-08-10 2013-05-30 Halliburton Energy Services, Inc. Automated controls for pump down operations
US20170145760A1 (en) * 2014-06-27 2017-05-25 Schlumberger Technology Corporation Dynamically automated adjustable downhole conveyance technique for an interventional application
WO2018026744A1 (fr) * 2016-08-02 2018-02-08 Schlumberger Technology Corporation Commande de transport d'équipement de fond de trou

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080216554A1 (en) * 2007-03-07 2008-09-11 Mckee L Michael Downhole Load Cell
US20100319910A1 (en) * 2009-06-18 2010-12-23 Sebastien Ives Drum Load Monitoring
US20130138254A1 (en) * 2010-08-10 2013-05-30 Halliburton Energy Services, Inc. Automated controls for pump down operations
US20170145760A1 (en) * 2014-06-27 2017-05-25 Schlumberger Technology Corporation Dynamically automated adjustable downhole conveyance technique for an interventional application
WO2018026744A1 (fr) * 2016-08-02 2018-02-08 Schlumberger Technology Corporation Commande de transport d'équipement de fond de trou

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