CN110725672A - Coiled tubing relieving choke and drainage gas production integrated pipe column and using method - Google Patents
Coiled tubing relieving choke and drainage gas production integrated pipe column and using method Download PDFInfo
- Publication number
- CN110725672A CN110725672A CN201910870312.0A CN201910870312A CN110725672A CN 110725672 A CN110725672 A CN 110725672A CN 201910870312 A CN201910870312 A CN 201910870312A CN 110725672 A CN110725672 A CN 110725672A
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- coiled tubing
- choke
- gas production
- drainage
- tubular column
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000000227 grinding Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000009825 accumulation Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000008398 formation water Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 54
- 239000000243 solution Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
-
- 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
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/06—Releasing-joints, e.g. safety joints
-
- 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
-
- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the technical field of underground throttling processes, and particularly relates to a coiled tubing release restrictor and drainage gas production integrated tubular column and a using method thereof. According to the technical scheme that the coiled tubing, the connector, the hydraulic safety joint, the back pressure valve, the jar, the screw motor and the grinding shoe are sequentially connected to the coiled tubing from top to bottom, the underground throttle is removed, the influence of liquid accumulation at the bottom of a well and the like is avoided, and the underground throttle is suitable for being removed under any well conditions. After the underground throttler is released, the tubular column is used as a production tubular column, so that the operation period is shortened. The invention realizes the coiled tubing drainage gas production technology by utilizing the characteristic that the diameter of the coiled tubing is smaller than that of the conventional production tubing, obviously improves the liquid carrying capacity of the gas well, discharges formation water from the shaft in time and prolongs the production period of the gas well.
Description
Technical Field
The invention belongs to the technical field of underground throttling processes, and particularly relates to a coiled tubing release restrictor and drainage gas production integrated tubular column and a using method thereof.
Background
The underground throttling process technology is a process technology for enabling the throttling depressurization process of natural gas to occur in a shaft of a gas well through an underground throttle, is a water drainage and gas production technology with the advantages of being good in water drainage and gas production effect, simple to operate, low in cost and the like, and is widely applied to initial production of the gas well. However, as the production time of the gas well continues, the productivity of the gas well gradually decreases, and the continuous use of the downhole choke for production leads to the flow rate lower than the critical flow rate and the beginning of liquid accumulation at the bottom of the gas well, and if other measures are not taken in time, the water logging and production stop will be caused.
The speed pipe column water drainage gas production technology is based on a shaft two-phase flow and a minimum holding liquid flow theory, and can reduce the critical holding liquid flow rate of a gas well in the production of the gas well, so that the holding liquid capacity of the gas well is improved, and the stable production of the gas well in the middle and later periods is ensured.
In the middle and later stages of gas well production, a speed pipe column is required to be put into production again after the underground throttler is fished out by using well testing steel wire operation, and in the actual operation process, due to reasons such as bottom hole accumulated liquid, the structure of the throttler and the like, the problem that the subsequent gas well production is influenced due to unsuccessful fishing is often encountered in the process of fishing the throttler by using the steel wire operation.
Disclosure of Invention
The invention provides a coiled tubing choke relieving and drainage gas production integrated pipe column and a using method thereof, and aims to provide a pipe column and a method which are not influenced by conditions such as bottom hole liquid accumulation and are suitable for relieving a downhole choke under any well conditions.
In order to achieve the purpose, the invention adopts the technical scheme that:
the coiled tubing removes the tubular column that the choke holder and drainage gas recovery integrate, include the coiled tubing at least, also include the union, hydraulic pressure safe joint, back pressure valve, jar knocker, screw motor and mill shoe; the connector, the hydraulic safety joint, the double-baffle backpressure valve, the jar, the screw motor and the grinding shoe are sequentially connected to the continuous oil pipe from top to bottom.
The connector and the hydraulic safety joint are consistent with the drift diameter of the coiled tubing.
The back pressure valve adopts a double-baffle back pressure valve.
The use method of the coiled tubing choke-releasing and water-draining gas-producing integrated pipe column comprises the following steps:
the method comprises the following steps: performing well-flushing operation
The coiled tubing is put in to remove the choke and the drainage gas production integrated tubular column, and when the distance between the ground shoe and the underground choke is a set value, the pump is started to circulate; after the upper surface of the underground throttler is washed, the coiled tubing is slowly lowered to remove the throttler and the drainage and gas production integrated pipe column and control the bit pressure, and the pump is started to circulate until the underground throttler is free from constraint;
step two: pressurizing and pushing down the remaining components of the downhole choke
After the first step is finished, dragging the pipe column to push the rest parts of the underground throttle to the bottom of the artificial well, throwing a soluble ball from the well mouth, pressurizing the continuous oil pipe to 15-20MPa after the soluble ball falls to the hydraulic safety joint, releasing the hydraulic safety joint, and enabling a tool string below the hydraulic safety joint to fall into the bottom of the artificial well;
step three: lifting the coiled tubing to a predetermined position
And after the second step is finished, lifting the coiled tubing to a preset position, and after the soluble balls are completely dissolved, suspending the coiled tubing in a wellhead device to be used as a production string to be left in the shaft, so that the production of water drainage and gas production of the velocity tube is realized.
In the first step, the distance between the grind shoe and the underground throttle is set to be 1m-2 m.
In the first step, the coiled tubing is slowly lowered to release the choke and the drainage and gas production integrated tubular column, and the pressure of the drilling pressure is controlled to be 5kN-15 kN.
And in the third step, the continuous oil pipe is lifted to the preset position, namely the position which is 1800-1900m away from the well head.
Has the advantages that:
firstly, the invention utilizes the coiled tubing drilling and grinding tool to remove the downhole choke, is not influenced by the conditions of bottom hole liquid accumulation and the like, and is suitable for removing the downhole choke under any well conditions.
Secondly, after the downhole choke is released, the pipe column is used as a production pipe column, so that the operation period is shortened.
Thirdly, the invention realizes the coiled tubing drainage gas production technology by utilizing the characteristic that the diameter of the coiled tubing is smaller than that of the conventional production tubing, can obviously improve the liquid carrying capacity of the gas well, timely discharges formation water from the shaft and prolongs the production period of the gas well.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical solutions of the present invention and to implement the technical solutions according to the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
In the figure: 1-producing an oil pipe; 2-coiled tubing; 3-a connector; 4-hydraulic safety joint; 5-back pressure valve; 6-jar; 7-a screw motor; 8-grinding the shoe; 9-downhole choke.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the coiled tubing release restrictor and drainage gas production integrated tubular column at least comprises a coiled tubing 2, a connector 3, a hydraulic safety joint 4, a back pressure valve 5, a jar 6, a screw motor 7 and a grinding shoe 8, wherein the coiled tubing release restrictor and the drainage gas production integrated tubular column are shown in figure 1; the connector 3, the hydraulic safety joint 4, the double-baffle backpressure valve 5, the jar 6, the screw motor 7 and the grinding shoe 8 are sequentially connected to the continuous oil pipe 2 from top to bottom.
In actual use, firstly, the well is flushed, the coiled tubing is put in to remove the choke and the integrated pipe column for drainage, gas production and production, and when the distance between the grinding shoe 8 and the underground choke 9 is 2m, the pump is started to circulate. After the upper surface of the downhole choke 9 is washed, the downhole choke is slowly lowered and the bit pressure is controlled to be 10kN, and the pump is started to circulate until the downhole choke 9 is free from constraint. And dragging the coiled tubing to remove the choke and drain and gas production integrated tubular column, pushing the rest parts of the downhole choke 9 to the artificial well bottom, throwing the soluble ball from the well mouth, pressurizing the coiled tubing 2 after the soluble ball falls to the hydraulic safety joint 4, releasing the hydraulic safety joint 4, and then dropping the tool string below the hydraulic release 4 to the artificial well bottom. And lifting the coiled tubing to a position which is away from the wellhead 1800-1900m from the preset position as required, after the soluble balls are completely dissolved after 24 hours, suspending the coiled tubing 2 in a wellhead device to be used as a production string to be left in the shaft, and realizing the drainage and gas production of the velocity tube. The adoption of the screw motor in the embodiment ensures the drilling and grinding of small-diameter pipes such as the coiled tubing and the like.
The underground choke is removed by adopting the invention, is not influenced by the conditions of bottom hole liquid accumulation and the like, and is suitable for removing the underground choke under any well conditions. After the underground throttler is released, the tubular column is used as a production tubular column, so that the operation period is shortened. The invention realizes the coiled tubing drainage gas production technology by utilizing the characteristic that the diameter of the coiled tubing is smaller than that of the conventional production tubing, can obviously improve the liquid carrying capacity of the gas well, timely discharges formation water from the shaft and prolongs the production period of the gas well.
Example two:
according to the coiled tubing release choke and drainage gas production integrated pipe column shown in fig. 1, the difference from the first embodiment is that: the connector 3 and the hydraulic safety joint 4 are consistent with the drift diameter of the coiled tubing 2.
In actual use, by adopting the technical scheme, the natural gas can not generate gas fluctuation due to the inconsistent drift diameters of the components when passing through the part, and the gas well production is favorably stabilized.
Example three:
according to the coiled tubing release choke and drainage gas production integrated pipe column shown in fig. 1, the difference from the first embodiment is that: the back pressure valve 5 adopts a double-baffle back pressure valve.
When in actual use, the back pressure valve 5 adopts the technical scheme of a double-baffle back pressure valve 5, so that the valve is opened during positive circulation, and the large-diameter injection fluid can be kept; the reverse circulation is automatically closed, and the fluid is effectively prevented from overflowing from the pipe column. The adoption of two baffle backpressure valves can effectively improve lower tubular column security, and when one of them baffle became invalid, another baffle played the effect of single current valve in addition.
Example four:
the use method of the coiled tubing choke-releasing and water-draining gas-producing integrated pipe column comprises the following steps:
the method comprises the following steps: performing well-flushing operation
A coiled tubing is put in to remove the choke and a drainage and gas production integrated pipe column, and when the distance between the grind shoe 8 and the downhole choke 9 is a set value, a pump is started to circulate; after the upper surface of the underground throttler 9 is washed, the coiled tubing is slowly lowered to remove the throttler and the drainage and gas production integrated pipe column, the drilling pressure is controlled, and the pump is started to circulate until the underground throttler 9 is free from constraint;
step two: pressurizing and pushing down the remaining components of the downhole choke
After the first step is finished, dragging the pipe column to push the rest parts of the downhole choke 9 to the bottom of the artificial well, throwing a soluble ball from the well mouth, pressurizing the continuous oil pipe 2 to 15-20MPa after the soluble ball falls to the hydraulic safety joint 4, releasing the hydraulic safety joint 4, and enabling a tool string below the hydraulic safety joint 4 to fall into the bottom of the artificial well;
step three: lifting the coiled tubing to a predetermined position
And after the second step is finished, lifting the continuous oil pipe 2 to a preset position, and suspending the continuous oil pipe 2 in a wellhead device to be used as a production pipe column to be left in the shaft after the soluble balls are completely dissolved, so that the water drainage and gas production of the velocity tube are realized.
In practical use, the underground choke is removed by adopting the invention, is not influenced by the conditions of bottom hole liquid accumulation and the like, and is suitable for removing the underground choke under any well conditions. After the underground throttler is released, the tubular column is used as a production tubular column, so that the operation period is shortened. The invention realizes the coiled tubing drainage gas production technology by utilizing the characteristic that the diameter of the coiled tubing is smaller than that of the conventional production tubing, can obviously improve the liquid carrying capacity of the gas well, timely discharges formation water from the shaft and prolongs the production period of the gas well.
Example five:
according to the use method of the coiled tubing choke-releasing and water drainage and gas production integrated pipe column shown in the figure 1, the difference from the embodiment four is that: in the first step, the distance between the grind shoe 8 and the downhole choke 9 is set to be 1-2 m.
When in actual use, the adoption of the technical scheme can lead the milling shoe 8 to enter the working state in advance, and can start full milling when contacting with the throttler, thereby improving the milling efficiency.
Example six:
according to the use method of the coiled tubing choke-releasing and water drainage and gas production integrated pipe column shown in the figure 1, the difference from the embodiment four is that: in the first step, the coiled tubing is slowly lowered to release the choke and the drainage and gas production integrated tubular column, and the pressure of the drilling pressure is controlled to be 5kN-15 kN.
When in actual use, the throttle can be effectively drilled and ground by adopting the technical scheme.
Example seven:
according to the use method of the coiled tubing choke-releasing and water drainage and gas production integrated pipe column shown in the figure 1, the difference from the embodiment four is that: in the third step, the continuous oil pipe 2 is lifted to the preset position, which is the position away from the well head 1800-1900 m.
In actual use, the coiled tubing 2 is lifted to a position which is 1800-1900m away from the wellhead, so that the liquid carrying capacity of the gas well can be improved, and the drainage and gas production effects can be improved.
In conclusion, the underground throttle is released by the technical scheme that the coiled tubing, the connector, the hydraulic safety joint, the backpressure valve, the jar, the screw motor and the grinding shoe are sequentially connected to the coiled tubing from top to bottom, is not influenced by the conditions of liquid accumulation at the bottom of a well and the like, and is suitable for releasing the underground throttle under any well conditions. After the underground throttler is released, the tubular column is used as a production tubular column, so that the operation period is shortened. The invention realizes the coiled tubing drainage gas production technology by utilizing the characteristic that the diameter of the coiled tubing is smaller than that of the conventional production tubing, obviously improves the liquid carrying capacity of the gas well, discharges formation water from the shaft in time and prolongs the production period of the gas well.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (7)
1. Coiled tubing removes choke ware and drainage gas production integration's tubular column, includes coiled tubing (2) at least, its characterized in that: the hydraulic pressure safety device also comprises a connector (3), a hydraulic pressure safety joint (4), a backpressure valve (5), a jar (6), a screw motor (7) and a milling shoe (8); the connector (3), the hydraulic safety joint (4), the double-baffle backpressure valve (5), the jar (6), the screw motor (7) and the grinding shoe (8) are sequentially connected to the coiled tubing (2) from top to bottom.
2. The coiled tubing relieved choke and drainage gas production integrated tubular column of claim 1, wherein: the connector (3) and the hydraulic safety joint (4) are consistent with the drift diameter of the coiled tubing (2).
3. The coiled tubing relieved choke and drainage gas production integrated tubular column of claim 1, wherein: the back pressure valve (5) adopts a double-baffle back pressure valve.
4. The use method of the coiled tubing choke-releasing and water-draining gas-producing integrated pipe column is characterized by comprising the following steps of:
the method comprises the following steps: performing well-flushing operation
The coiled tubing is put into the integrated tubular column for releasing the choke and drainage and gas production, and when the distance between the ground shoe (8) and the underground choke (9) is a set value, the pump is started to circulate; after the upper surface of the underground restrictor (9) is washed, the coiled tubing is slowly lowered to remove the integrated pipe column for producing the restrictor and the drainage gas production and control the bit pressure, and the pump is started to circulate until the underground restrictor (9) removes the restriction;
step two: pressurizing and pushing down the remaining components of the downhole choke
After the first step is finished, dragging the pipe column to push the rest parts of the underground throttle (9) to the bottom of the artificial well, throwing a soluble ball from the well mouth, pressurizing the continuous oil pipe (2) to 15-20MPa after the soluble ball falls to the hydraulic safety joint (4), releasing the hydraulic safety joint (4), and enabling a tool string below the hydraulic safety joint (4) to fall into the bottom of the artificial well;
step three: lifting the coiled tubing to a predetermined position
And after the second step is finished, lifting the coiled tubing (2) to a preset position, and after the soluble balls are completely dissolved, suspending the coiled tubing (2) in a wellhead device to be used as a production string to be left in the shaft, so that the water drainage and gas production of the velocity tube are realized.
5. The use method of the coiled tubing choke-free and water drainage and gas production integrated tubular column as claimed in claim 4, wherein the use method comprises the following steps: in the first step, the distance between the grinding shoe (8) and the underground throttle (9) is set to be 1-2 m.
6. The use method of the coiled tubing choke-free and water drainage and gas production integrated tubular column as claimed in claim 4, wherein the use method comprises the following steps: in the first step, the coiled tubing is slowly lowered to release the choke and the drainage and gas production integrated tubular column, and the pressure of the drilling pressure is controlled to be 5kN-15 kN.
7. The use method of the coiled tubing choke-free and water drainage and gas production integrated tubular column as claimed in claim 4, wherein the use method comprises the following steps: in the third step, the continuous oil pipe (2) is lifted to the preset position, which is the position away from the well head 1800-1900 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870312.0A CN110725672A (en) | 2019-09-16 | 2019-09-16 | Coiled tubing relieving choke and drainage gas production integrated pipe column and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870312.0A CN110725672A (en) | 2019-09-16 | 2019-09-16 | Coiled tubing relieving choke and drainage gas production integrated pipe column and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110725672A true CN110725672A (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910870312.0A Pending CN110725672A (en) | 2019-09-16 | 2019-09-16 | Coiled tubing relieving choke and drainage gas production integrated pipe column and using method |
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| CN (1) | CN110725672A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012028838A2 (en) * | 2010-08-28 | 2012-03-08 | Ax-S Technology Ltd | Releasable connector assembly for tubing and tool deployment system |
| CN104481489A (en) * | 2014-11-11 | 2015-04-01 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and well completion integrated process method for gas well vertical well |
| CN104989310A (en) * | 2015-07-06 | 2015-10-21 | 中国石油化工股份有限公司 | Horizontal well jarring jam releasing device and construction method thereof |
| CN106761521A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Fishing tool for mechanical restrictor and operation method of fishing tool |
| CN107476773A (en) * | 2017-08-24 | 2017-12-15 | 中国石油天然气股份有限公司 | Tool string and method for eliminating obstacles in well |
-
2019
- 2019-09-16 CN CN201910870312.0A patent/CN110725672A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012028838A2 (en) * | 2010-08-28 | 2012-03-08 | Ax-S Technology Ltd | Releasable connector assembly for tubing and tool deployment system |
| CN104481489A (en) * | 2014-11-11 | 2015-04-01 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and well completion integrated process method for gas well vertical well |
| CN104989310A (en) * | 2015-07-06 | 2015-10-21 | 中国石油化工股份有限公司 | Horizontal well jarring jam releasing device and construction method thereof |
| CN106761521A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Fishing tool for mechanical restrictor and operation method of fishing tool |
| CN107476773A (en) * | 2017-08-24 | 2017-12-15 | 中国石油天然气股份有限公司 | Tool string and method for eliminating obstacles in well |
Non-Patent Citations (1)
| Title |
|---|
| 谢涛 等: ""连续油管套磨铣处理失效节流器"", 《2018年全国天然气学术年会论文集（04工程技术）》 * |
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