CN113123740B - Drilling fluid cooling system - Google Patents
Drilling fluid cooling system Download PDFInfo
- Publication number
- CN113123740B CN113123740B CN201911399889.4A CN201911399889A CN113123740B CN 113123740 B CN113123740 B CN 113123740B CN 201911399889 A CN201911399889 A CN 201911399889A CN 113123740 B CN113123740 B CN 113123740B
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- China
- Prior art keywords
- drilling fluid
- pipeline
- cooling
- wellhead
- valve
- 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.)
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- 238000005553 drilling Methods 0.000 title claims abstract description 106
- 239000012530 fluid Substances 0.000 title claims abstract description 99
- 238000001816 cooling Methods 0.000 title claims abstract description 75
- 238000003466 welding Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 abstract description 9
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000000523 sample Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of petroleum drilling, in particular to a drilling fluid cooling method, which is applied to a drilling fluid cooling system, wherein the drilling fluid cooling system comprises a wellhead flare, a wellhead overflow pipe, a shunt box, a vibrating screen, a drilling fluid tank, a shunt pipeline, a cooling unit, a cooling mixer, a pipeline I, a valve I, a pipeline II, a valve II, a pipeline III and a valve III, the drilling fluid tank is connected with the cooling unit through a first pipeline and a second pipeline, the first valve is arranged on the first pipeline, the first valve controls the on-off of the first pipeline, the second valve is arranged on the second pipeline, the second valve controls the on-off of the second pipeline, the third valve is arranged on the third pipeline, and the third valve controls the on-off of the third pipeline. The drilling fluid cooling method can be used for cooling three times, so that the high-temperature drilling fluid is cooled before entering the purification equipment, the service life of the purification equipment is prolonged, the running cost is reduced, the production efficiency is improved, and the safety of operators is improved.
Description
Technical Field
The invention relates to the technical field of oil drilling, in particular to a drilling fluid cooling system.
Background
With the increase of energy demand and the development of petroleum drilling technology, deep wells, ultra-deep wells and high-temperature high-pressure wells become important directions of the development of the drilling industry, in the process of drilling the deep wells and the ultra-deep wells, the formation temperature increases along with the increase of depth, the bottom hole temperature of the 6000-7000m deep wells is 180-210 ℃, and when the drilling depth exceeds 10000 m, the bottom hole temperature is above 300 ℃, the formation temperature increases to cause the increase of the drilling fluid temperature, which not only affects the performance of the drilling fluid, but also affects the service life of downhole tools, the safety of drilling operation and personnel safety.
At present, after the drilling fluid is generally purified (i.e. screened, deaerated, desanding and desliming), the drilling fluid is cooled by utilizing a cooling medium by utilizing a heat exchange principle, and under the condition, the purification equipment needs to work in a high-temperature environment, so that the service life and personnel safety of the purification equipment are very unfavorable.
The prior art has the following problems:
1. The purification equipment needs to work at high temperature, so that the service life of the purification equipment is reduced, and the running cost is increased;
2. The high-temperature drilling fluid can cause parts such as a screen to be more easily damaged, and the frequent replacement reduces the working efficiency;
3. personnel face high temperature drilling fluid when operating equipment, increase personnel's danger of operation.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a drilling fluid cooling system.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a drilling fluid cooling system, includes well head horn mouth, well head overflow pipe, shunt tank, reposition of redundant personnel pipeline, shale shaker, drilling fluid jar, cooling unit, pipeline one, valve one, pump one, pipeline two, valve two, pump two, the well head horn mouth with the shunt tank passes through the well head overflow pipe is connected, the shunt tank with the shale shaker passes through the reposition of redundant personnel pipeline is connected, the shale shaker is installed drilling fluid jar face, drilling fluid jar with cooling unit passes through pipeline one with pipeline two connects, valve one with pump one is installed on the pipeline one, valve one with pump one control pipeline one break-make, valve two with pump two are installed on the pipeline two, valve two with pump two control pipeline two break-make still includes:
The cooling mixer is connected to one end of the wellhead bell mouth, which is close to the wellhead, and is connected with the cooling unit through the pipeline III, the valve III and the pump III are installed on the pipeline III, and the valve III controls the on-off of the pipeline III.
As a preferred embodiment of the present invention, the cooling mixer includes: the low-temperature drilling fluid joint comprises an outer sleeve, an inner sleeve I, an inner sleeve II, a low-temperature drilling fluid joint, a welding flange I and a welding flange II, wherein the inner sleeve I and the inner sleeve II are respectively sleeved at two ends of the outer sleeve, one end part of the inner sleeve and two end parts of the inner sleeve are alternately sleeved, an annular space is formed between the inner sleeve I, the inner sleeve II and the inner wall of the outer sleeve, the low-temperature drilling fluid joint is welded on the outer wall of the outer sleeve, and the welding flange I and the welding flange II are respectively fixedly connected with two ends of the outer sleeve.
As a preferable scheme of the invention, the outer sleeve is provided with a hole matched with the low-temperature drilling fluid interface, and the hole is communicated with an annular space formed by the inner sleeve I, the inner sleeve II and the inner wall of the outer sleeve.
As a preferred embodiment of the present invention, the method further comprises: the temperature sensor is arranged on the outer wall of the wellhead overflow pipe and is used for monitoring the temperature of the wellhead overflow pipe.
As a preferred embodiment of the present invention, the method further comprises: the flow sensor is arranged on the outer wall of the wellhead overflow pipe and is used for monitoring the flow of the wellhead overflow pipe.
As a preferred embodiment of the present invention, the method further comprises: and the heat dissipation fan is arranged on the surface of the drilling fluid tank and is close to the vibrating screen.
The working process and principle of the invention are as follows:
The temperature of the drilling fluid returned from the wellhead flows into the wellhead overflow pipe through the wellhead bell mouth, the temperature sensor is used for detecting the temperature of the drilling fluid, when the temperature of the drilling fluid exceeds a preset temperature, the cooling mixer is started, the valve III and the pump III are opened, the low-temperature drilling fluid of the cooling unit enters the cooling mixer through the pipeline III, the low-temperature drilling fluid enters an annular space formed by the inner sleeve I, the inner sleeve II and the inner wall of the outer sleeve from the low-temperature drilling fluid interface, the low-temperature drilling fluid is mixed with the high-temperature drilling fluid in a spray mode, so that the temperature of the high-temperature drilling fluid is effectively reduced, the cooled and mixed drilling fluid enters the wellhead overflow pipe through the wellhead bell mouth, the flow sensor is used for detecting the flow of the drilling fluid, the flow of the drilling fluid is controlled by adjusting the flow of the low-temperature drilling fluid, the cooled and mixed drilling fluid enters the flow distribution box from the overflow pipe, then enters the purifying equipment for purification, the drilling fluid is subjected to blowing cooling treatment on the vibrating screen surface, the drilling fluid is subjected to secondary cooling, the temperature is further reduced, the low-temperature drilling fluid enters the cooling unit, the drilling fluid enters the cooling unit, and the cooling unit is subjected to cooling medium exchange through the cooling unit, and the cooling fluid is cooled by the cooling medium is cooled.
The beneficial effects of the invention are as follows:
1. the purification equipment works at normal temperature, so that the service life of the purification equipment is prolonged, and the running cost is reduced;
2. The normal temperature drilling fluid reduces the replacement frequency of vulnerable parts such as a screen, and improves the working efficiency;
3. Personnel face normal temperature drilling fluid when operating equipment, reduced personnel's danger of operation.
Drawings
FIG. 1 is a front view of a drilling fluid cooling system of the present invention;
FIG. 2 is a top view of the drilling fluid cooling system of the present invention;
FIG. 3 is a schematic diagram of the operation of the cooling unit of the present invention;
FIG. 4 is a schematic diagram of the cooling mixer of the present invention.
The marks in the figure: 1-a wellhead flare; 2-wellhead overflow pipe; 3-a split box; 4-split line; 5-a vibrating screen; 6-a drilling fluid tank; 7-a cooling unit; 8-line one; 9-valve one; 10-pump one; 11-line two; 12-valve II; 13-pump two; 14-cooling the mixer; 15-line three; 16-valve three; 17-pump three; 18-a temperature sensor; 19-a flow sensor; 20-a heat radiation fan; 71-pump four; 72-heat exchanger; 73-valve IV; 74-valve 5; 75-a heat sink; 76-pump five; 77-a cooling medium tank; 141-outer sleeve, 142-inner sleeve I, 143-inner sleeve II, 144-low temperature drilling fluid interface, 145-welding flange I, 146-welding flange II, 147-hole.
Detailed Description
The present invention will be described in further detail with reference to the following examples and embodiments, but it should not be construed that the scope of the present invention is limited to the following examples, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
As shown in figures 1-2, a drilling fluid cooling system comprises a wellhead horn mouth 1, a wellhead overflow pipe 2, a shunt box 3, a shunt pipeline 4, a vibrating screen 5, a drilling fluid tank 6, a cooling unit 7, a pipeline I8, a valve I9, a pump I10, a pipeline II 11, a valve II 12 and a pump II 13, a cooling mixer 14, a pipeline III 15, a valve III 16 and a pump III 17, wherein the wellhead horn mouth 1 is connected with the shunt box 3 through the wellhead overflow pipe 2, the shunt box 3 is connected with the vibrating screen 5 through the shunt pipeline 4, the vibrating screen 5 is arranged on the tank surface of the drilling fluid tank 6, the drilling fluid tank 6 is connected with the cooling unit 7 through the pipeline I8 and the pipeline II 11, the valve I9 and the pump I10 are arranged on the pipeline I8, the valve II 12 and the pump II 13 are arranged on the pipeline II 11, the valve II 12 and the pump II 13 are used for controlling the on-off of the pipeline I8, the cooling mixer 14 is connected at one end of the wellhead horn mouth 1 close to the wellhead, the cooling mixer 14 is connected with the cooling unit 7 through the pipeline III 15, the valve III 16 and the pump III 17 are arranged on the pipeline III 15, the valve III 17 is used for controlling the on the pipeline III 15 and the three pipeline 15, the valve III 17 is used for the three-17 is opened, and the valve III 17 is used for controlling the three-17 is opened when the temperature of the valve III is more than or equal to the three temperature of the valve 17.
As shown in fig. 3, the cooling unit 7 includes a pump four 71, a heat exchanger 72, a valve four 73, a valve 74, a radiator 75, a pump five 76, and a cooling medium tank 77, and the working process of the cooling unit 7 is as follows: the pump IV 71 sends the high-temperature drilling fluid in the drilling fluid tank 6 into the heat exchanger 72 to exchange heat with the cooling medium sent into the heat exchanger 72 from the cooling medium tank 77 through the pump IV 76, the drilling fluid with reduced temperature returns to the drilling fluid tank 6 or enters the cooling mixer 14, the cooling medium sent out from the heat exchanger 72 returns to the cooling medium tank 77, and the cooling medium is sent into the radiator 75 through the pump IV 76 to perform heat dissipation and temperature reduction treatment, and then returns to the cooling medium tank 77.
As shown in fig. 4, the cooling mixer 14 includes an outer sleeve 141, an inner sleeve 142, an inner sleeve 143, and a low-temperature drilling fluid interface 144, wherein the inner sleeve 142 and the inner sleeve 143 are respectively sleeved at two ends of the outer sleeve 141, the end of the inner sleeve 142 is sleeved with the end of the inner sleeve 143 in a staggered manner, an annular space is formed between the inner sleeve 142, the inner sleeve 143 and the inner wall of the outer sleeve 141, the low-temperature drilling fluid interface 144 is welded on the outer wall of the outer sleeve 141, a welding flange 145 and a welding flange 146 are respectively welded at two ends of the outer sleeve 141, the outer sleeve 141 is provided with a hole 147 matched with the low-temperature drilling fluid interface 144, and the hole 147 is communicated with the annular space formed by the inner sleeve 142, the inner sleeve 143 and the inner wall of the outer sleeve 141.
Example 2
The difference between this embodiment and embodiment 1 is that the temperature sensor 18 is further included, the temperature sensor 18 is installed on the outer wall of the wellhead and overflow pipe 2, the probe of the temperature sensor 18 is installed on the inner wall of the wellhead and overflow pipe 2, and the temperature sensor 18 is used for monitoring the temperature of the wellhead and overflow pipe 2.
Example 3
The difference between this embodiment and embodiment 1 is that the flow sensor 19 is further included, the flow sensor 19 is installed on the outer wall of the wellhead and the overflow pipe 2, the probe of the flow sensor 19 is installed on the inner wall of the wellhead and the overflow pipe 2, and the flow sensor 19 is used for monitoring the flow of the wellhead and the overflow pipe 2.
Example 4
The difference between this embodiment and embodiment 1 is that the device further includes a heat dissipation fan 20, and the heat dissipation fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
Example 5
The difference between this embodiment and embodiment 2 is that the flow sensor 19 is further included, the flow sensor 19 is installed on the outer wall of the wellhead and overflow pipe 2, the probe of the temperature sensor 18 is installed on the inner wall of the wellhead and overflow pipe 2, and the flow sensor 19 is used for monitoring the flow of the wellhead and overflow pipe 2.
Example 6
The difference between this embodiment and embodiment 2 is that the device further includes a heat dissipation fan 20, and the heat dissipation fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
Example 7
The difference between this embodiment and embodiment 3 is that the device further includes a heat dissipation fan 20, and the heat dissipation fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
Example 8
The difference between this embodiment and embodiment 5 is that the device further includes a heat dissipation fan 20, and the heat dissipation fan 20 is installed on the tank surface of the drilling fluid tank 6 and is close to the vibrating screen 5.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The drilling fluid cooling method is characterized by being applied to a drilling fluid cooling system, the drilling fluid cooling system comprises a wellhead horn mouth, a wellhead overflow pipe, a shunt box, a shunt pipeline, a vibrating screen, a drilling fluid tank, a cooling unit, a pipeline I, a valve I, a pump I, a pipeline II, a valve II, a cooling mixer, a pipeline III, a valve III, a pump III and a cooling fan, the wellhead horn mouth is connected with the shunt box through the wellhead overflow pipe, the shunt box is connected with the vibrating screen through the shunt pipeline, the vibrating screen is installed on the tank face of the drilling fluid tank, the drilling fluid tank is connected with the cooling unit through the pipeline I and the pipeline II, the valve I and the pump I are installed on the pipeline I, the valve II and the pump II are installed on the pipeline II, the valve II and the pump II are used for controlling the on-off of the pipeline II, the cooling mixer is connected with the wellhead through the shunt pipeline, the vibrating screen is installed on one end of the wellhead and close to the wellhead, the cooling mixer is connected with the pipeline III through the pipeline III, and the cooling unit is connected with the valve III through the valve III, and the on-off of the cooling unit is controlled: the device comprises an outer sleeve, an inner sleeve I, an inner sleeve II, a low-temperature drilling fluid interface, a welding flange I and a welding flange II, wherein the inner sleeve I and the inner sleeve II are respectively sleeved at two ends of the outer sleeve, one end part of the inner sleeve and two end parts of the inner sleeve are in staggered sleeve joint, an annular space is formed by the inner sleeve I, the inner sleeve II and the outer sleeve, a channel is formed at the staggered position of the inner sleeve I and the inner sleeve II, the channel is communicated with the annular space, the low-temperature drilling fluid interface is fixed on the outer wall of the outer sleeve, the welding flange I and the welding flange II are respectively fixedly connected with two ends of the outer sleeve, and the heat dissipation fan is arranged on the tank surface of the drilling fluid tank and close to the position of the vibrating screen;
when the temperature of the drilling fluid exceeds the preset temperature, a cooling mixer is started, a valve III and a pump III are opened, so that the low-temperature drilling fluid in the drilling fluid tank enters the cooling mixer through a cooling unit and a pipeline III, the low-temperature drilling fluid enters an annular space formed by an inner sleeve I, an inner sleeve II and the inner wall of an outer sleeve from a low-temperature drilling fluid interface, the low-temperature drilling fluid is mixed with the high-temperature drilling fluid in a jet mode, the temperature is reduced once, the cooled and mixed drilling fluid enters a wellhead overflow pipe through a wellhead bell mouth, then enters a diversion box from the wellhead overflow pipe, the drilling fluid on the screen surface of a vibrating screen is subjected to blowing cooling treatment through a cooling fan, the second cooling is performed, the purified drilling fluid enters the drilling fluid tank, and the cooling unit is subjected to the third cooling.
2. A drilling fluid cooling method according to claim 1, wherein the casing of the drilling fluid cooling system applied to the drilling fluid cooling method is provided with a bore associated with the cryogenic drilling fluid interface, the bore forming a passage for cryogenic drilling fluid into the annular space.
3. A drilling fluid cooling method according to any of claims 1 or 2, wherein the drilling fluid cooling system applied to the drilling fluid cooling method further comprises: the temperature sensor is arranged on the outer wall of the wellhead overflow pipe and is used for monitoring the temperature of the wellhead overflow pipe.
4. A drilling fluid cooling method according to any of claims 1 or 2, wherein the drilling fluid cooling system applied to the drilling fluid cooling method further comprises: the flow sensor is arranged on the outer wall of the wellhead overflow pipe and is used for monitoring the flow of the wellhead overflow pipe.
5. A drilling fluid cooling method according to claim 3, wherein the drilling fluid cooling system applied to the drilling fluid cooling method further comprises: the flow sensor is arranged on the outer wall of the wellhead overflow pipe and is used for monitoring the flow of the wellhead overflow pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399889.4A CN113123740B (en) | 2019-12-30 | 2019-12-30 | Drilling fluid cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399889.4A CN113123740B (en) | 2019-12-30 | 2019-12-30 | Drilling fluid cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113123740A CN113123740A (en) | 2021-07-16 |
| CN113123740B true CN113123740B (en) | 2024-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911399889.4A Active CN113123740B (en) | 2019-12-30 | 2019-12-30 | Drilling fluid cooling system |
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| Country | Link |
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| CN (1) | CN113123740B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775307A (en) * | 2021-09-02 | 2021-12-10 | 中国煤炭地质总局水文地质局 | A kind of drilling mud liquid cooling device and drilling system |
| CN117145410B (en) * | 2023-11-01 | 2024-02-09 | 湖南路桥建设集团有限责任公司 | Reverse circulation bored pile construction device |
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| CN102052134A (en) * | 2009-10-30 | 2011-05-11 | 迪尔公司 | Device for cooling an exhaust gas stream |
| CN110410040A (en) * | 2019-09-06 | 2019-11-05 | 中国石油集团川庆钻探工程有限公司 | Safe operation system based on adjustable annular pumping helps row well head combustible gas |
| CN211874422U (en) * | 2019-12-30 | 2020-11-06 | 四川宏华石油设备有限公司 | Drilling fluid cooling system |
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| CN113123740A (en) | 2021-07-16 |
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