CN111022035A - Oil pipe dragging leakage finding device with bottom seal and method - Google Patents
Oil pipe dragging leakage finding device with bottom seal and method Download PDFInfo
- Publication number
- CN111022035A CN111022035A CN201911227379.9A CN201911227379A CN111022035A CN 111022035 A CN111022035 A CN 111022035A CN 201911227379 A CN201911227379 A CN 201911227379A CN 111022035 A CN111022035 A CN 111022035A
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- sealed space
- leakage
- packer
- shaft
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 23
- 239000003129 oil well Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a dragging leakage detection device with an oil pipe bottom seal and a method thereof, belonging to the technical field of oil and gas field well repair and completion, and the dragging leakage detection device with the oil pipe bottom seal provided by the invention comprises: the side wall of the eye tube is provided with a through hole; the blocking part is used for blocking the end part of the eye tube; a packer; the eye tube is connected with the packer through the plugging part. The invention aims at the core contradiction point of the leakage finding tubular column in the prior art, namely the leakage of the tool oil pipe thread, adopts the eye tube to communicate the oil pipe with the oil sleeve after the oil pipe enters the shaft, and can find the reliable position of the shaft leakage point by using the unique characteristic that the pressure is not reduced to find the leakage. The invention initiatively and independently searches the leakage condition of the shaft above the packer, realizes the requirement that the shaft can operate with larger or smaller leakage amount, and solves the problem that the shaft with extremely small leakage amount can not find the leakage point after drilling and cementing.
Description
Technical Field
The invention belongs to the technical field of oil and gas field well repairing and completing, and particularly relates to a device and a method for dragging leakage detection of an oil pipe with a bottom seal.
Background
The conventional oil pipe leakage finding operation pipe column with bottom seal developed and applied by oil clothing companies at home and abroad basically adopts the following structure from top to bottom: hydraulic anchor, TDZ packer.
The annular water return condition and the oil pipe pressure are observed through oil pipe pressurization, and whether a leakage point exists below the packer or not is judged; and (4) pressurizing through the annular space, observing the water return condition of the oil pipe and the pressure of the sleeve, and judging whether a leakage point exists above the packer or not.
In the process of implementing the embodiment of the invention, the inventor finds that at least the following defects exist in the background art:
due to the fact that the tool oil pipe screw thread is abraded and poor in sealing performance, screw thread leakage exists in the pressurizing process, and the reason that pressure is reduced cannot be judged for a drilling and fixing well with small leakage loss of a leakage point of a shaft; so that the pressure drop can not be determined to be caused by the problems that the packer is not tightly set, the leakage point of the shaft is lost or the screw thread of the tool oil pipe is not tightly sealed, and the pipe column structure is only suitable for shaft leakage finding operation with extremely large shaft leakage or incapable of starting pressure.
Disclosure of Invention
The invention provides an oil pipe with bottom seal dragging leakage finding device and a method, aiming at solving the problems that as the tool oil pipe thread is worn and has poor sealing performance and the thread is lost in the pressurizing process, the drilling and fixing well with small leakage loss of a shaft leakage point cannot judge the reason of pressure reduction; so that the pressure drop can not be determined to be caused by the problems that the packer is not tightly set, the leakage point of the shaft is lost or the screw thread of the tool oil pipe is not tightly sealed, and the tubular column structure is only suitable for the shaft leakage finding operation problem that the shaft leakage is extremely large or the pressure can not be generated.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an oil pipe area end seal drags and looks for hourglass device, includes:
the side wall of the eye tube is provided with a through hole;
the blocking part is used for blocking the end part of the eye tube;
a packer;
the eye tube is connected with the packer through the plugging part.
The eye tube, the plugging portion and the packer are coaxial.
An oil pipe is arranged outside the eye pipe, one end of the eye pipe is connected with the oil pipe, and the other end of the eye pipe is connected with the plugging part.
The plugging part is a plug, and the slip teeth outside the packer are hard alloy slip teeth.
A tubing drag leak detection method with bottom seal for use in an oil well wellbore, the method comprising:
step 3, lifting the sealing position at the bottom of the shaft, and reducing the volume of the first sealing space from the bottom of the shaft to obtain a second sealing space;
and 5, obtaining a pressure leakage area from the bottom of the third sealed space to the bottom of the first sealed space.
In the step 1, the method specifically comprises the following steps:
a first sealed space is established by using the packer to seal the area of the well bore needing to be leaked out.
The step 2 may also be:
pressurizing in the annular space of the shaft, detecting whether the first sealed space is pressurized, and if the first sealed space is pressurized, carrying out the next step.
In the step 3, the method specifically comprises the following steps:
and lifting a packer in the bottom of the well barrel, and sealing by using the packer and reducing the volume of the first sealed space to obtain a second sealed space.
In the step 4, the method specifically comprises the following steps:
and pressurizing in the second sealed space, detecting whether the second sealed space leaks pressure, repeating the step if the second sealed space leaks pressure, and continuously lifting the packer to reduce the volume of the second sealed space until a third sealed space which does not leak pressure is detected.
The oil pipe bottom seal dragging and leakage finding method is applied to any oil pipe bottom seal dragging and leakage finding method by using any oil pipe bottom seal dragging and leakage finding device.
The invention has the advantages that the invention aims at the core contradiction point of the leakage finding tubular column in the prior art, namely the leakage of the tool oil pipe thread, adopts the eye tube to communicate the oil sleeve after the oil pipe enters the shaft, and can find the reliable position of the shaft leakage point by using the unique characteristic that the pressure does not drop to find the leakage. The invention initiatively and independently searches the leakage condition of the shaft above the packer, realizes the requirement that the shaft can operate with larger or smaller leakage amount, and solves the problem that the shaft with extremely small leakage amount can not find the leakage point after drilling and cementing.
Drawings
Fig. 1 shows a schematic overall structure diagram of an oil pipe drag leak hunting device with a bottom seal according to the present invention.
Labeled as: 1. an eye tube; 2. a blocking portion; 3. a packer; 4. and (4) an oil pipe.
Detailed Description
In the following, a detailed description will be given of an oil pipe bottom seal dragging leak finding scheme provided by the embodiments of the present invention through several specific embodiments.
Example 1
Referring to fig. 1, an overall structural schematic diagram of a dragging leak hunting device with an end seal for an oil pipe according to the present invention is shown, the dragging leak hunting device with an end seal for an oil pipe includes:
the side wall of the eye tube 1 is provided with a through hole;
the plugging part 2 is used for plugging the end part of the eye tube 1;
a packer 3;
the eye tube 1 is connected with a packer 3 through a plugging part 2.
In the above embodiment, during the on-site leakage finding, the oil pipe with the bottom seal dragging and leakage finding device is arranged on the oil pipe, the inside of the eye pipe 1 is communicated with the inside of the oil pipe, the oil pipe with the bottom seal dragging and leakage finding device is connected through the oil pipe and then is drilled downwards to the designed leakage finding position, the packer 3 is used for realizing setting, the annular space of an oil sleeve is sealed, a sealed space is established above the rubber of the packer, and the normal leakage finding operation can be carried out.
After setting, pressurizing through an oil pipe, stabilizing the pressure for 10-30min, and observing whether the pressure is reduced. If the pressure does not drop (or the pressure drop is less than 0.7MPa for 30 min), indicating that the shaft above the bottom packer has no leakage point; if the pressure drops, it is necessary to consider that the bottom packer is not set tightly or that there is a leak in the wellbore above the bottom packer.
When the packer 3 is unset, the packer 3 is unset by lifting the operation oil pipe, and the steps are repeated when the next leakage finding operation is needed.
The perforated pipe 1 communicates the inside and outside of the oil pipe, the plugging part 2 is matched with the perforated pipe 1, and the pressure is led to the position above the packer 3, the difference with the prior art is that when the oil pipe is led to the pressure in the prior art, whether a leak source exists in the well below the packer 3 can be measured, while the embodiment leads the pressure to the position above the packer 3, and the leak source position is found out by adopting a spatial cross elimination method.
Example 2
Further, referring to fig. 1, according to another embodiment of the oil pipe bottom seal dragging leakage detection device of the present invention, the eye tube 1, the plugging portion 2 and the packer 3 are coaxial.
In the embodiment, the eye tube 1, the plugging part 2 and the packer 3 are coaxial, so that the oil tube with the bottom seal can drag the leakage detection device to smoothly descend in the well.
Example 3
Further, referring to fig. 1, according to another embodiment of the oil pipe dragging leak finding device with bottom seal of the present invention, an oil pipe 4 is further disposed outside the eye pipe 1, one end of the eye pipe 1 is connected to the oil pipe 4, and the other end of the eye pipe 1 is connected to the plugging portion 2.
In the above embodiment, in this application, the device can go up and down through oil pipe 4 to and oil pipe 4 can provide water pressure for the well of packer 3 upper end, and when the on-the-spot use, only need with on-the-spot oil pipe 4 and the device that the eye tube 1, jam portion 2 and packer 3 constitute on can, oil pipe 4 is also a part of function piece.
Example 4
Further, referring to fig. 1, according to another embodiment of the dragging and leak finding device for an oil pipe with a bottom seal of the present invention, the plugging portion 2 is a plug, and the slip teeth outside the packer are cemented carbide slip teeth.
In the embodiment, as more friction is generated in the well during the leakage finding period, the service life of the packer can be prolonged by adopting the hard alloy slip teeth, and the accuracy reduction caused by friction loss is prevented.
Further, according to another embodiment of the dragging and leakage finding device with the bottom seal for the oil pipe, disclosed by the invention, the eye tube 1 is hollow, one end of the eye tube 1 is communicated with the oil pipe 4, and the other end of the eye tube is communicated with the through holes.
In the above embodiment, the eye tube 1 is responsible for communicating the oil pipe 4 with the outside, and the oil pipe 4 is communicated with the upper half part of the packer in the well bore.
Further, according to another embodiment of the dragging and leakage finding device for the oil pipe with the bottom seal, the plugging part 2 is in threaded connection with the eye pipe 1.
In the above embodiment, the detachable connection of the blocking part 2 and the threaded connection of the eye tube 1 can facilitate transportation and field assembly, the waterproof adhesive tape can be used for sealing by adopting a conventional technology during threaded connection, and the blocking part 2 is connected by adopting the threaded connection to prevent liquid from leaking to the packer.
Further, the plugging part 2 is connected with the packer 3 in a threaded mode.
In the above embodiment, the plug 2 and packer 3 are threaded to prevent fluid loss to the packer.
Further, still include middle connecting pipe between oil pipe 4 and the eye pipe 1, middle part of middle connecting pipe is the internal thread, and oil pipe 4 passes through middle connecting pipe is connected with eye pipe 1.
In the above embodiment, the use of the intermediate connection pipe makes it possible to make the connection between the oil pipe 4 and the eye tube 1 more stable.
Example 5
The application relates to an oil pipe dragging leakage finding method with a bottom seal, which is used in an oil well shaft and comprises the following steps:
step 3, lifting the sealing position at the bottom of the shaft, and reducing the volume of the first sealing space from the bottom of the shaft to obtain a second sealing space;
and 5, obtaining a pressure leakage area from the bottom of the third sealed space to the bottom of the first sealed space.
In the embodiment, in the oil well shaft, the first sealing space can be established by using the packer 3 to realize setting, the annular space of the oil sleeve is sealed, a sealed space is established above the rubber of the packer, and normal leakage finding operation can be carried out.
After setting, the first sealed space is pressurized through the oil pipe 4, the pressure is stabilized for 10-30min, and whether the pressure is reduced or not is observed. If the pressure does not drop (or the pressure drop is less than 0.7MPa for 30 min), indicating that the shaft above the bottom packer has no leakage point; if the pressure drops, it is necessary to consider that the bottom packer is not set tightly or that there is a leak in the wellbore above the bottom packer.
When the packer 3 is unsealed, the packer 3 is unsealed by lifting the operating oil pipe, then the next operation is carried out, the packer 3 is lifted, the second sealed space is pressurized continuously, whether a leakage point exists in the second sealed space is measured, the step is repeated until a third sealed space without a dew point is found, and the area without intersection between the first sealed space and the third sealed space can be determined as the area with the leakage point.
Example 6
Further, in another embodiment of the oil pipe drag leak finding method with bottom seal of the present invention, in the step 1, specifically:
a first sealed space is established by using the packer to seal the area of the well bore needing to be leaked out.
In the above embodiment, the packer 3 in the prior art is used in the oil well to seal the first sealed space.
Example 7
Further, in another embodiment of the oil pipe drag leak finding method with bottom seal of the present invention, the step 2 may further be:
pressurizing in the annular space of the shaft, detecting whether the first sealed space is pressurized, and if the first sealed space is pressurized, carrying out the next step.
In the above embodiment, after the first sealed space is sealed, the tightness of the first sealed space may also be detected by pressurizing the annulus of the wellbore, and if the pressure in the first sealed space increases, it indicates that the annulus pressure in the wellbore enters the first sealed space, and by using this method, the pressure leakage of the first sealed space may also be detected.
Example 8
Further, in another embodiment of the oil pipe drag leak finding method with bottom seal of the present invention, in step 3, specifically:
and lifting a packer in the bottom of the well barrel, and sealing by using the packer and reducing the volume of the first sealed space to obtain a second sealed space.
In the above embodiment, in order to further detect a non-pressure-leaking region in the shaft, the volume of the first sealed space is reduced, and further pressurization and pressure measurement are performed. Repeating the steps can obtain the area without pressure leakage.
Example 9
Further, in another embodiment of the oil pipe drag leak finding method with bottom seal of the present invention, in step 4, specifically:
and pressurizing in the second sealed space, detecting whether the second sealed space leaks pressure, repeating the step if the second sealed space leaks pressure, and continuously lifting the packer to reduce the volume of the second sealed space until a third sealed space which does not leak pressure is detected.
In the embodiment, the third sealed space is a finally obtained pressure-tight area, the third sealed space is used for further reducing the range of the pressure-tight area in the first sealed space, and after a plurality of attempts, the oil pipe bottom seal dragging leakage finding method can accurately determine the pressure leakage range and provide accurate pressure leakage range area information for field construction personnel.
Example 10
An oil pipe bottom seal dragging leakage finding method is applied to the oil pipe bottom seal dragging leakage finding method in any one of embodiments 5 to 9 by using the oil pipe bottom seal dragging leakage finding device in any one of embodiments 1 to 4.
In the embodiment, after the core contradiction point of the leakage of the tool oil pipe thread is found, the hole pipe, the thread plug and the TDZ bottom packer are sequentially connected through the thread, the pipe column structure solves the problem that the packer cannot be tightly set, the leakage of the shaft leakage point or the sealing of the tool oil pipe thread is not tight by removing the leakage of the tool oil pipe thread, and the leakage condition of the shaft above the packer is independently found, so that the requirement that the shaft can work with larger or smaller leakage amount is met, the problem that the leakage point cannot be found in the drilling and fixing residual shaft with extremely small leakage amount is solved, the application range is wide, and the technical requirement of leakage finding work is met. The beneficial effect of this embodiment is 1, realized the possibility of conventional tool oil pipe accuracy finding leak. 2. The requirement that the shaft can work when the leakage amount of the shaft is larger or smaller is met, and the problem that the conventional tool oil pipe of the shaft cannot find a leakage point when drilling and cementing with extremely small leakage amount is left is solved.
Claims (10)
1. The utility model provides an oil pipe area end seal drags and looks for hourglass device which characterized in that includes:
the side wall of the eye tube (1) is provided with a through hole;
the plugging part (2), the plugging part (2) is used for plugging the end part of the eye tube (1);
a packer (3);
the eye tube (1) is connected with the packer (3) through the plugging part (2).
2. The bottom-seal dragging and leakage finding device for the oil pipe as claimed in claim 1, wherein the eye tube (1), the plugging part (2) and the packer (3) are coaxial.
3. The oil pipe bottom seal dragging leakage detection device according to claim 1, wherein an oil pipe (4) is further arranged outside the eye pipe (1), one end of the eye pipe (1) is connected with the oil pipe (4), and the other end of the eye pipe is connected with the plugging portion (2).
4. The tubing bottom-seal dragging leak hunting device according to claim 1, wherein the plugging portion (2) is a plug, and the slip teeth outside the packer are cemented carbide slip teeth.
5. A tubing drag leak detection method with bottom seal for use in an oil well wellbore, the method comprising:
step 1, sealing a shaft region needing to find leakage to establish a first sealing space;
step 2, pressurizing in the first sealed space, and detecting whether the first sealed space leaks pressure; if the first sealed space leaks pressure, the next step is carried out;
step 3, lifting the sealing position at the bottom of the shaft, and reducing the volume of the first sealing space from the bottom of the shaft to obtain a second sealing space;
step 4, pressurizing the second sealed space, detecting whether the second sealed space leaks pressure, repeating the step if the second sealed space leaks pressure, and continuously reducing the volume of the second sealed space until a third sealed space which does not leak pressure is detected;
and 5, obtaining a pressure leakage area from the bottom of the third sealed space to the bottom of the first sealed space.
6. The oil pipe bottom seal dragging leakage detection method according to claim 5, wherein in the step 1, specifically:
a first sealed space is established by using the packer to seal the area of the well bore needing to be leaked out.
7. The oil pipe bottom seal dragging leakage detection method according to claim 5, wherein the step 2 further comprises:
pressurizing in the annular space of the shaft, detecting whether the first sealed space is pressurized, and if the first sealed space is pressurized, carrying out the next step.
8. The oil pipe bottom seal dragging leakage detection method according to claim 6, wherein in the step 3, specifically:
and lifting a packer in the bottom of the well barrel, and sealing by using the packer and reducing the volume of the first sealed space to obtain a second sealed space.
9. The oil pipe bottom seal dragging leakage detection method according to claim 6, wherein in the step 4, specifically:
and pressurizing in the second sealed space, detecting whether the second sealed space leaks pressure, repeating the step if the second sealed space leaks pressure, and continuously lifting the packer to reduce the volume of the second sealed space until a third sealed space which does not leak pressure is detected.
10. An oil pipe bottom seal dragging and leakage finding method is applied to the oil pipe bottom seal dragging and leakage finding method of any one of claims 5 to 9 by using the oil pipe bottom seal dragging and leakage finding device of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227379.9A CN111022035A (en) | 2019-12-04 | 2019-12-04 | Oil pipe dragging leakage finding device with bottom seal and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227379.9A CN111022035A (en) | 2019-12-04 | 2019-12-04 | Oil pipe dragging leakage finding device with bottom seal and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022035A true CN111022035A (en) | 2020-04-17 |
Family
ID=70207913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911227379.9A Pending CN111022035A (en) | 2019-12-04 | 2019-12-04 | Oil pipe dragging leakage finding device with bottom seal and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111022035A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754810A (en) * | 1987-03-16 | 1988-07-05 | Conoco Inc. | Method for patching casing leaks |
| CN201835760U (en) * | 2010-07-21 | 2011-05-18 | 王祖明 | Pipe string for solving clogging of pumping well |
| CN204299572U (en) * | 2014-10-31 | 2015-04-29 | 中国石油化工股份有限公司 | A kind of horizontal well is looked for and is leakage altered tubing string |
| CN206016802U (en) * | 2016-06-29 | 2017-03-15 | 中国石油天然气股份有限公司 | Pipe column leak source detection device |
| CN206091978U (en) * | 2016-09-09 | 2017-04-12 | 西南石油大学 | Lou combination tool is tested to oil field sleeve pipe |
| CN107178363A (en) * | 2017-05-26 | 2017-09-19 | 中国石油天然气股份有限公司 | Leakage finding pipe column for casing change well and leakage finding process thereof |
| CN107313767A (en) * | 2017-05-26 | 2017-11-03 | 中国石油天然气股份有限公司 | Leakage finding pipe column and leakage finding process method thereof |
| CN208380562U (en) * | 2018-06-14 | 2019-01-15 | 中国石油化工股份有限公司 | A kind of Multifunctional casing looks for leakage process pipe string |
| CN211342902U (en) * | 2019-12-04 | 2020-08-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oil pipe with bottom seal dragging leakage finding device |
-
2019
- 2019-12-04 CN CN201911227379.9A patent/CN111022035A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754810A (en) * | 1987-03-16 | 1988-07-05 | Conoco Inc. | Method for patching casing leaks |
| CN201835760U (en) * | 2010-07-21 | 2011-05-18 | 王祖明 | Pipe string for solving clogging of pumping well |
| CN204299572U (en) * | 2014-10-31 | 2015-04-29 | 中国石油化工股份有限公司 | A kind of horizontal well is looked for and is leakage altered tubing string |
| CN206016802U (en) * | 2016-06-29 | 2017-03-15 | 中国石油天然气股份有限公司 | Pipe column leak source detection device |
| CN206091978U (en) * | 2016-09-09 | 2017-04-12 | 西南石油大学 | Lou combination tool is tested to oil field sleeve pipe |
| CN107178363A (en) * | 2017-05-26 | 2017-09-19 | 中国石油天然气股份有限公司 | Leakage finding pipe column for casing change well and leakage finding process thereof |
| CN107313767A (en) * | 2017-05-26 | 2017-11-03 | 中国石油天然气股份有限公司 | Leakage finding pipe column and leakage finding process method thereof |
| CN208380562U (en) * | 2018-06-14 | 2019-01-15 | 中国石油化工股份有限公司 | A kind of Multifunctional casing looks for leakage process pipe string |
| CN211342902U (en) * | 2019-12-04 | 2020-08-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oil pipe with bottom seal dragging leakage finding device |
Non-Patent Citations (5)
| Title |
|---|
| 初玉林等: "河口油田油水井找漏工艺", 《油气田地面工程》, pages 91 - 92 * |
| 曾志等: "封隔器在找漏工艺中的应用", 《中国石油和化工标准与质量》, pages 135 * |
| 李光等: "杜39-1井套管找漏方法探讨", 《油气井测试》, pages 53 - 54 * |
| 许期聪等: "《氮气钻井完井实用新技术》", 31 October 2011, 成都：电子科技大学出版社 , pages: 56 * |
| 黄毅等: "《安全生产标准汇编 》", 30 June 2007, 北京：煤炭工业出版社, pages: 247 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756119U (en) | Sleeve subassembly for simulated cementation test | |
| IE50466B1 (en) | Piping leakage detection | |
| CN208380562U (en) | A kind of Multifunctional casing looks for leakage process pipe string | |
| CN111878069A (en) | Composite continuous pipe cable oil-water well casing leakage finding system and method | |
| CN211342902U (en) | Oil pipe with bottom seal dragging leakage finding device | |
| US6430990B1 (en) | Pipe testing apparatus | |
| CN105257281A (en) | Method for detecting casing leakage | |
| CN204344115U (en) | A kind of tubing and casing looks for the omission of examination to seal system | |
| CN103216209B (en) | Packer in tubing and casing sealing propertytest pipe | |
| CN106522930A (en) | Leakage finding device for oil well pipe wall | |
| US5563336A (en) | Appparatus for pressure testing of tubulars | |
| CN111022035A (en) | Oil pipe dragging leakage finding device with bottom seal and method | |
| CN209764342U (en) | Thermal recovery packing element locking test device | |
| CN203347735U (en) | Self-checking and self-sealing releasing packer | |
| CN216588560U (en) | Plateau continental facies shale gas testing and flowback equipment | |
| CN103161438B (en) | Tubular column of perforation fracturing test system | |
| CN205049338U (en) | Simple and convenient test device of water conservancy anchorage face | |
| CN109538194B (en) | Coiled tubing underground quick leakage finding process pipe column and using method | |
| CN212359729U (en) | Horizontal well fracturing tracer monitoring sliding sleeve and tracer segmented monitoring device | |
| CN203756157U (en) | Multifunctional device for oilfield oil production well layering pressure measurement | |
| CN210598909U (en) | Packer with measurable compression distance | |
| CN110656931B (en) | Mining hydraulic drilling-following diameter measuring device and method | |
| CN203296759U (en) | Pipe column device for perforating and testing of HTHP ultra-deep well | |
| CN105221101A (en) | Test cover and leak packer | |
| CN207212329U (en) | One kind tests pipe device core assembly and tests pipe device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Applicant before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. Effective date of registration: 20201029 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1203 Applicant before: CHINA NATIONAL PETROLEUM Corp. Applicant before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |