CN111305795A - Method for applying cannula bridge plug lower tube pump - Google Patents
Method for applying cannula bridge plug lower tube pump Download PDFInfo
- Publication number
- CN111305795A CN111305795A CN202010166556.3A CN202010166556A CN111305795A CN 111305795 A CN111305795 A CN 111305795A CN 202010166556 A CN202010166556 A CN 202010166556A CN 111305795 A CN111305795 A CN 111305795A
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- Prior art keywords
- bridge plug
- pipe
- oil
- plug
- well
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003780 insertion Methods 0.000 claims abstract description 21
- 230000037431 insertion Effects 0.000 claims abstract description 21
- 238000005406 washing Methods 0.000 claims abstract description 8
- 241000191291 Abies alba Species 0.000 claims description 15
- 238000005086 pumping Methods 0.000 claims description 11
- 244000147058 Derris elliptica Species 0.000 claims description 10
- 238000002627 tracheal intubation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000012795 verification Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 3
- 239000003079 shale oil Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 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
- 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
- E21B43/121—Lifting well fluids
-
- 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
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention relates to a method for applying a pipe-under-pipe pump of an insertion pipe bridge plug, which is used for the exploration and development of shale oil, compact oil, low-permeability and ultra-low-permeability oil and gas reservoirs; under the pressure state, a setting tool and a pipe inserting bridge plug are put in the bottom of the coiled tubing, an oil layer is temporarily closed after the bridge plug is set, and the coiled tubing is taken out; then, inserting an inserting pipe tool, opening an inserting pipe bridge plug inner sliding sleeve, and performing a later pump-down well completion process after verifying that the oil sleeve annular space is communicated; the process method avoids the high-density well killing fluid from washing the well killing, the oil layer is not polluted by the well killing fluid, the time for preparing the high-density well killing fluid is saved, and the operation cost of the high-density well killing fluid is reduced; the time is observed by the wash-free kill-job, in the process of pump-down well completion, the oil layer is temporarily closed after the pipe-inserting bridge plug is set, so that the well mouth is in a controlled protection state.
Description
Technical Field
The invention belongs to a method for lowering a tubular pump after fracturing of a light sleeve for oil and gas field development and application, and particularly relates to a method for lowering a tubular pump by using a pipe inserting bridge plug.
Background
With the exploration and development of shale oil, compact oil, low permeability and ultra-low permeability oil and gas reservoirs, the volume fracturing technology is widely applied, and the fracturing measure modification technology becomes a necessary means for developing unconventional oil and gas reservoirs. At present, after blowout of an unconventional optical casing fracturing well, the shut-in pressure is high, and the conventional pump-down construction method at present is as follows: and (3) performing well killing by the upper coiled tubing, when the pressure is higher, additionally preparing high-density well killing fluid, and after the well killing is finished, installing a workover rig and connecting an oil tube lower pump. The high-density well killing fluid is adopted, so that pollution to an oil-gas layer is caused, the yield after fracturing is greatly reduced, the cost for preparing the high-density well killing fluid is high, the time is long, and the whole construction period is influenced.
Therefore, based on the problems, the method for applying the pipe inserting type pump under the pipe inserting type bridge plug is provided, which has important practical significance, can avoid the high-density well killing hydraulic well, prevent an oil layer from being polluted by well killing fluid, temporarily close the oil layer after the pipe inserting type bridge plug is lowered and sealed, and enable a well mouth to be in a controlled protection state.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for applying a pipe inserting bridge plug lower pipe pump, which can prevent a high-density well control hydraulic well from polluting an oil layer by well control fluid, temporarily close the oil layer after a pipe inserting bridge plug is lowered and is in a controlled protection state, and is used for preventing the oil layer from being polluted by the well control fluid.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a method of using a cannula bridge plug in a down tube pump comprising the steps of:
(1) preparing a shaft, and cleaning thick oil at a well mouth and in the shaft;
(2) sequentially putting a coiled tubing, a connector, a safety joint, a tubing change buckle, a setting tool and an insertion tube bridge plug into a shaft under the condition that a wellhead is under pressure, verifying the sealing performance of the insertion tube bridge plug, and taking out the coiled tubing, the connector, the safety joint, the tubing change buckle and the setting tool after the insertion tube bridge plug is sealed to be qualified;
(3) installing a workover rig, replacing a large four-way of a well head, installing a blowout preventer and testing the pressure of the well head; a tubing hanger, a short joint and a plug valve;
(4) sequentially putting a tubular pump, a telescopic joint, an oil pipe, a sieve pipe, an oil pipe, a plug, a sieve pipe and an insertion pipe tool into the oil pipe, deepening the oil pipe and opening an inner sliding sleeve of an insertion pipe bridge plug;
(5) opening a casing gate, observing the overflow condition, and verifying whether the oil sleeve is communicated or not, thereby verifying whether the sliding sleeve in the intubation bridge plug is opened or not;
(6) opening a casing gate without overflow, and inserting a pump rod assembly after determining that the cannula bridge plug is sealed;
(7) after the trial pumping pressure building is qualified, the piston is placed at the bottom of the pump cylinder, and 1 pump rod at the uppermost part is reversely buckled;
(8) adjusting the depth of a pipe column at a well head through a short section, setting an oil pipe hanger and a plug valve in a closed state, and inserting a pipe inserting tool into a bridge plug; simultaneously opening a casing gate, observing the overflow condition, verifying whether the sliding sleeve in the cannula bridging plug is opened or not, and immediately executing the step (9) after the opening is confirmed;
(9) opening the plug valve, observing the overflow condition of the oil pipe, and detaching the anti-spraying device and the plug valve if no overflow exists;
(10) and (4) hanging the Christmas tree, putting the pump rod into the oil tree to be buckled, lifting the oil tree to be buckled again, putting the pump rod short section and the polished rod into the oil tree, and handing the oil tree into the well after the oil tree is qualified in the trial pumping.
Further, the preparation of the well casing in the step 1 comprises the steps of coiled tubing sand washing, well dredging, scraping and hot well washing.
Further, the method for verifying the leakproofness of the cannula bridge plug in the step 2 comprises the following steps: when the pressure of a wellhead is lower than 5MPa, pressing the pipe inserting bridge plug to a preset position, setting the pipe inserting bridge plug in the coiled tubing, if the pressure in the coiled tubing suddenly drops, indicating that the setting tool and the pipe inserting bridge plug are successfully released, lowering the coiled tubing to re-detect the pipe inserting bridge plug, and if the pressure in the coiled tubing is blocked, indicating that the pipe inserting bridge plug is completely set; after the coiled tubing is lifted up and leaves the bridge plug for 150-200 meters, positive pressure is applied to the wellhead for 20-25MPa, observation is carried out for 20-30min, and the pressure drop is qualified when the pressure drop is less than 0.7 MPa; and then opening the casing gate, releasing pressure to 0, observing for 20-30min, taking out the coiled tubing when the liquid is not discharged from the well mouth, and finishing the verification of the sealing performance of the pipe-inserting bridge plug.
Furthermore, after the sealing of the pipe inserting bridge plug in the step (2) is qualified, the upper part of the bridge plug is thoroughly washed, dirt in the shaft is washed out of the shaft, and the pipe inserting tool can be smoothly inserted into and opened from the inner sliding sleeve.
Further, when the pipe inserting tool is put into the pipe inserting tool in the step (4), the pipe inserting tool is provided with a centralizer, and the plug position of the pipe inserting tool can be inserted into the inner sliding sleeve to be opened.
Further, the method for opening the sliding sleeve in the cannula bridging plug in the step (4) comprises the following steps: and (5) pressurizing 15kN to connect the in-well intubation bridge plug, and opening the in-well intubation bridge plug inner sliding sleeve.
Further, after the oil sleeve is communicated as proved in the step (5), if the oil pipe overflows, lifting 1 oil pipe, closing the inner sliding sleeve of the cannula bridge plug, closing for the second time, and temporarily closing the oil layer.
Further, during the period of replacing the Christmas tree in the step (10), the casing gate is kept open, and the overflow is released.
Furthermore, the cannula bridging plug is of a fishing type or a drilling type, and the cannula tool is inserted or lifted up, so that the sliding sleeve in the bridging plug can be opened or closed repeatedly, and the communication channel of the oil sleeve is opened or closed.
Furthermore, the size of the Christmas tree should meet 130/105MPa of large-drift-diameter Christmas tree, and the outer diameter of the pipe-inserting bridge plug and the matched tool should be smaller than the drift diameter of the Christmas tree.
The invention has the advantages and positive effects that:
the non-pressurized hydraulic well has no pollution to a reservoir, saves the time for preparing the high-density pressurized fluid and reduces the operation cost of the high-density pressurized fluid; the observation time of the washing-free kill-job is short, the construction period is short, and the well control risk is small; when the pump is inspected in the later stage, the oil layer is temporarily closed by the pipe-inserting bridge plug, so that the stratum is well isolated and protected.
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any individual technical features described or implicit in the embodiments mentioned herein may still be continued in any combination or subtraction between these technical features (or their equivalents) to obtain still further embodiments of the invention that may not be mentioned directly herein.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and furthermore, the terms "comprises" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
In this embodiment, a pipe pump is installed under a pipe bridge plug of a large port oil field GX well, and the specific process steps are as follows:
on the basis of an original 130/105MPa fracturing wellhead large-drift-diameter Christmas tree, a 2-inch continuous oil pipe light pipe is used for detecting the sand surface, 3% KCL solution is used for positively circulating sand washing at a discharge capacity of 0.4-0.6 square/minute until the liquid properties of an inlet and an outlet are consistent, and then the continuous oil pipe is taken out; then lowering a bottom belt phi 114 multiplied by 2m drift size of the coiled tubing to the upper position of the early-stage fracturing bridge plug at the speed of 15 m/min, stopping and pressurizing in the midway until the pressure is not more than 30KN, taking out the drift size, checking, lowering the drift size into the scraper of the bottom belt of the coiled tubing again at the speed of 15 m/min if the drift size is normal, and repeatedly scraping the setting position of the bridge plug of the insertion tube; after the coiled tubing is lifted out of the scraper, the pressure of the whole well casing is tested to 80% of the internal pressure resistance value of the casing until the pressure test is qualified;
running into coiled tubing, using 50m3Hot water positive circulation hot washing is carried out until the properties of an inlet and an outlet are consistent, thick oil in the well is washed out, and then the thick oil is taken out of the continuous oil pipe;
when the pressure of a well head is lower than 5MPa, a coiled tubing, a safety joint, a setting tool (with a ball) and an insertion pipe bridge plug are put down, after the insertion pipe bridge plug is put down to a preset position, 20MPa of setting bridge plug is pressed in the coiled tubing, if the pressure in the coiled tubing suddenly drops, the setting tool and the bridge plug are successfully released, the coiled tubing is put down to re-detect the bridge plug, and if the pressure is indicated by blockage, the bridge plug is completely set; after the coiled tubing is lifted up and leaves 200 meters of the bridge plug, the pressure of the wellhead is positively pressed by 20MPa, the pressure drop is qualified when the pressure is observed for 30 minutes and is less than 0.7 MPa; opening a casing gate, releasing pressure to 0 at the well mouth, observing for 30 minutes, taking out the continuous oil pipe when the liquid is not discharged from the well mouth is qualified, and completing the construction process of temporarily closing an oil layer until the sealing performance of the pipe inserting bridge plug is verified;
after the seal of the cannula bridge plug is qualified, when the upper part of the cannula bridge plug is thoroughly washed, filtered clean water is used for 50m3The well is washed in a positive circulation mode until the liquid properties of an inlet and an outlet are consistent, so that the dirt such as fracturing sand in the shaft is washed out of the shaft, and the intubation tool can be inserted into the inner sliding sleeve smoothly and opened;
removing continuous oil pipe equipment, mounting a workover rig, mounting a kill-job choke manifold and a pipeline, changing a wellhead, mounting a blowout preventer, and testing the pressure of the wellhead; a tubing hanger, a short joint and a plug valve; the oil pipe hanger can be hung in the wellhead large four-way through the inner step of the wellhead large four-way to seal the oil sleeve annulus; the insertion into the insertion pipe bridging plug can be ensured through the adjustment depth of the short section, and the sliding sleeve in the insertion pipe bridging plug can be smoothly opened; the plug valve is a blowout prevention tool in the pipe column and seals the inside of the oil pipe to prevent overflow;
the tubing is deepened by a tubing running tubing pump, a telescopic joint, 3 tubing, a sieve tube, 2 tubing, a blind plate, a sieve tube and a cannula tool; lowering the pipe column, pressurizing for 15kN to connect the pipe inserting bridge plug in the well, and opening the sliding sleeve in the pipe inserting bridge plug;
opening a casing gate, observing the overflow condition, and verifying that the oil sleeve is communicated and the sliding sleeve in the cannula bridging plug is opened if the overflow condition exists;
after the oil sleeve is communicated, if the oil pipe overflows; lifting 1 oil pipe, closing the inner sliding sleeve of the insertion pipe bridge plug, closing for the second time, and temporarily closing an oil layer;
opening a casing gate, observing no overflow, after determining that an inner sliding sleeve of the intubation bridging plug is closed, descending a pump rod assembly, putting a piston into the bottom of a pump cylinder, and reversely buckling 1 pump rod at the uppermost part; the pumping rod combination refers to a pumping rod, a weighting rod, a pumping rod centralizer and a polish rod, the lower part of the pumping rod is connected with an oil well pump piston, and the upper part of the pumping rod is connected with an oil pumping unit;
adjusting the depth of a pipe column at a well mouth through an oil pipe nipple, connecting a plug valve (in a closed state) at the upper end of the oil pipe nipple, and connecting an in-well intubation bridge plug in a pressurization 10kN test; simultaneously opening a casing gate, observing the overflow condition, verifying whether the sliding sleeve in the cannula bridging plug is opened or not, and immediately executing the next step after confirming the opening;
opening the plug valve, observing the overflow condition of the oil pipe, detaching the anti-spraying device, detaching the short section of the oil pipe and the plug valve at the upper end if no overflow exists, clamping the oil pipe by the elevator and sitting on the large four-way, connecting the oil pipe hanger at the upper end of the oil pipe, withdrawing the elevator and sitting the oil pipe hanger in the large four-way;
hanging the Christmas tree (during the replacement of the Christmas tree, keeping a sleeve gate open, releasing overflow), putting the pump rod into the sleeve for buckling, lifting the sleeve to be fastened again, and then putting the pump rod short section and the polish rod into the sleeve;
and connecting a pressure gauge to one side of the upper hanging of the Christmas tree, closing the upper hanging sleeve gate of the Christmas tree, and handing over the well after the trial pumping is qualified at 5 MPa.
It should be noted that various tools used in this embodiment are all existing products, which are well known to those skilled in the art, and the structure thereof is not described herein again, but for the reasons mentioned above, the repeated reproduction of those skilled in the art will not be affected.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. A method of using a cannula bridge plug in a down tube pump, comprising: the method comprises the following steps:
(1) preparing a shaft, and cleaning thick oil at a well mouth and in the shaft;
(2) sequentially putting a coiled tubing, a connector, a safety joint, a tubing change buckle, a setting tool and an insertion tube bridge plug into a shaft under the condition that a wellhead is under pressure, verifying the sealing performance of the insertion tube bridge plug, and taking out the coiled tubing, the connector, the safety joint, the tubing change buckle and the setting tool after the insertion tube bridge plug is sealed to be qualified;
(3) installing a workover rig, replacing a large four-way of a well head, installing a blowout preventer and testing the pressure of the well head; a tubing hanger, a short joint and a plug valve;
(4) sequentially putting a tubular pump, a telescopic joint, an oil pipe, a sieve pipe, an oil pipe, a plug, a sieve pipe and an insertion pipe tool into the oil pipe, deepening the oil pipe and opening an inner sliding sleeve of an insertion pipe bridge plug;
(5) opening a casing gate, observing the overflow condition, and verifying whether the oil sleeve is communicated or not, thereby verifying whether the sliding sleeve in the intubation bridge plug is opened or not;
(6) opening a casing gate without overflow, and inserting a pump rod assembly after determining that the cannula bridge plug is sealed;
(7) after the trial pumping pressure building is qualified, the piston is placed at the bottom of the pump cylinder, and 1 pump rod at the uppermost part is reversely buckled;
(8) adjusting the depth of a pipe column at a well head through a short section, setting an oil pipe hanger and a plug valve in a closed state, and inserting a pipe inserting tool into a bridge plug; simultaneously opening a casing gate, observing the overflow condition, verifying whether the sliding sleeve in the cannula bridging plug is opened or not, and immediately executing the step (9) after the opening is confirmed;
(9) opening the plug valve, observing the overflow condition of the oil pipe, and detaching the anti-spraying device and the plug valve if no overflow exists;
(10) and (4) hanging the Christmas tree, putting the pump rod into the oil tree to be buckled, lifting the oil tree to be buckled again, putting the pump rod short section and the polished rod into the oil tree, and handing the oil tree into the well after the oil tree is qualified in the trial pumping.
2. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: and (3) preparing the well casing in the step 1, wherein the well casing comprises the steps of coiled tubing sand washing, well dredging, scraping and hot well washing.
3. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: the method for verifying the sealing performance of the cannula bridge plug in the step 2 comprises the following steps: when the pressure of a wellhead is lower than 5MPa, pressing the pipe inserting bridge plug to a preset position, setting the pipe inserting bridge plug in the coiled tubing, if the pressure in the coiled tubing suddenly drops, indicating that the setting tool and the pipe inserting bridge plug are successfully released, lowering the coiled tubing to re-detect the pipe inserting bridge plug, and if the pressure in the coiled tubing is blocked, indicating that the pipe inserting bridge plug is completely set; after the coiled tubing is lifted up and leaves the bridge plug for 150-200 meters, positive pressure is applied to the wellhead for 20-25MPa, observation is carried out for 20-30min, and the pressure drop is qualified when the pressure drop is less than 0.7 MPa; and then opening the casing gate, releasing pressure to 0, observing for 20-30min, taking out the coiled tubing when the liquid is not discharged from the well mouth, and finishing the verification of the sealing performance of the pipe-inserting bridge plug.
4. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: and (3) after the plug pipe bridge plug in the step (2) is sealed to be qualified, thoroughly washing the upper part of the bridge plug to wash out dirt in the shaft out of the shaft, so that the plug pipe tool can be smoothly inserted into and opened by the inner sliding sleeve.
5. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: and (4) when the pipe inserting tool is put in the step (4), the pipe inserting tool is provided with a centralizer, and the plug part of the pipe inserting tool can be inserted into the inner sliding sleeve to be opened.
6. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: the method for opening the inner sliding sleeve of the cannula bridging plug in the step (4) comprises the following steps: and (5) pressurizing 15kN to connect the in-well intubation bridge plug, and opening the in-well intubation bridge plug inner sliding sleeve.
7. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: and (5) after the oil sleeve is communicated, if the oil pipe overflows, lifting 1 oil pipe, closing the inner sliding sleeve of the insertion pipe bridge plug, closing for the second time, and temporarily closing the oil layer.
8. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: and (3) during the replacement of the Christmas tree in the step (10), keeping the casing gate open and releasing the overflow.
9. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: the pipe insertion bridge plug is in a fishing type or a drilling type, and the pipe insertion tool is inserted or lifted up, so that the inner sliding sleeve of the bridge plug can be opened or closed repeatedly, and the communication channel of the oil sleeve can be opened or closed.
10. A method of using a cannula bridge plug downcomer pump according to claim 1 wherein: the size of the Christmas tree should meet 130/105MPa of Christmas tree with large drift diameter, and the outer diameter of the pipe-inserting bridge plug and the matched tool should be smaller than the drift diameter of the Christmas tree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166556.3A CN111305795A (en) | 2020-03-11 | 2020-03-11 | Method for applying cannula bridge plug lower tube pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166556.3A CN111305795A (en) | 2020-03-11 | 2020-03-11 | Method for applying cannula bridge plug lower tube pump |
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| CN111305795A true CN111305795A (en) | 2020-06-19 |
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| CN202010166556.3A Pending CN111305795A (en) | 2020-03-11 | 2020-03-11 | Method for applying cannula bridge plug lower tube pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112324384A (en) * | 2020-11-30 | 2021-02-05 | 中国石油集团渤海钻探工程有限公司 | Non-well killing operation process method applying pressure control switch valve |
| CN114427362A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Temporary plugging method for well completion |
| CN114439392A (en) * | 2022-01-24 | 2022-05-06 | 延长油田股份有限公司南泥湾采油厂 | Oil displacement type slickwater well-flushing plug-removal construction method |
| CN115012863A (en) * | 2022-06-02 | 2022-09-06 | 中国石油化工股份有限公司 | Method for replacing well head of high-pressure gas well without killing well by using empty well barrel |
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| CN114427362A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Temporary plugging method for well completion |
| CN112324384A (en) * | 2020-11-30 | 2021-02-05 | 中国石油集团渤海钻探工程有限公司 | Non-well killing operation process method applying pressure control switch valve |
| CN114439392A (en) * | 2022-01-24 | 2022-05-06 | 延长油田股份有限公司南泥湾采油厂 | Oil displacement type slickwater well-flushing plug-removal construction method |
| CN115012863A (en) * | 2022-06-02 | 2022-09-06 | 中国石油化工股份有限公司 | Method for replacing well head of high-pressure gas well without killing well by using empty well barrel |
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Effective date of registration: 20210602 Address after: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Applicant after: CNPC Bohai Drilling Engineering Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Applicant before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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