CN107780912B - Cased well fracturing fluid drainage method and system - Google Patents
Cased well fracturing fluid drainage method and system Download PDFInfo
- Publication number
- CN107780912B CN107780912B CN201610799784.8A CN201610799784A CN107780912B CN 107780912 B CN107780912 B CN 107780912B CN 201610799784 A CN201610799784 A CN 201610799784A CN 107780912 B CN107780912 B CN 107780912B
- Authority
- CN
- China
- Prior art keywords
- electric
- packer
- submersible pump
- tool string
- armored cable
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000012530 fluid Substances 0.000 title abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 241000191291 Abies alba Species 0.000 claims description 14
- 230000002265 prevention Effects 0.000 claims description 13
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000005520 electrodynamics Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000013480 data collection Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a cased well fracturing fluid drainage method and system, and belongs to the field of petroleum industry. The method comprises the following steps: the tool string is connected and comprises an electric centralizer, an electric submersible pump and an electric packer from bottom to top; connecting an armored cable to the tool string; lowering the tool string to a predetermined downhole location; starting the electric centralizer to perform centralizing operation; starting the electric packer to set and anchor the packer; and starting the electric submersible pump to discharge liquid. The method and the system provided by the invention are not influenced by the dynamic liquid property when liquid is discharged, and the liquid discharging efficiency can be improved. The invention adopts the cased well fracturing liquid discharge technology to discharge liquid.
Description
Technical Field
The invention relates to the field of petroleum industry, in particular to a cased well fracturing fluid drainage method and a system.
Background
With the rapid development of the petroleum industry, higher demands are made on the production and quality of the produced fluids from the formation. In the exploration and development work of oil fields, in order to obtain better productivity, a cased well fracturing fluid drainage mode can be adopted as a yield increasing means.
The current cased well fracturing fluid-discharge mode is mostly hydraulic jet pump fluid-discharge, needs supporting high-pressure ground pump, through this high-pressure ground pump carry power liquid to in a power liquid injection pipeline of production tree well head. The hydraulic jet pump comprises a high-pressure surface pump, a mixing chamber, a sealing mechanism and a low-pressure chamber which are connected in sequence, and the specific implementation process is as follows: power fluid is pumped into the oil pipe through the high-pressure ground pump, the power fluid is throttled at a nozzle of the high-pressure ground pump, a negative pressure area is formed at the position of the nozzle and a throat pipe (the joint of the high-pressure ground pump and a mixing cavity), the formation fluid and the power fluid are mixed at the position and flow through a diffusion pipe in the low-pressure cavity, when mixed liquid passes through the diffusion pipe, because the overflowing area is gradually increased, the flow rate of the mixed liquid is reduced, the pressure is increased, and the mixed liquid is lifted to the ground through an annular space of the oil pipe under the action of the pressure.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the hydraulic jet pump has high requirement on the liquid property of the power liquid, and if the power liquid contains large hard impurities, the pump core nozzle is easy to block, and the liquid discharge efficiency is influenced.
Disclosure of Invention
The embodiment of the invention provides a cased well fracturing fluid drainage method and system, aiming at solving the problem that a pump core nozzle is blocked due to the fact that power fluid is not pure in liquid state. The technical scheme is as follows:
in one aspect, a cased well frac drainage method is provided, the method comprising:
the tool string is connected and comprises an electric centralizer, an electric submersible pump and an electric packer from bottom to top;
connecting an armored cable to the tool string;
lowering the tool string to a predetermined downhole location;
starting the electric centralizer to perform centralizing operation;
starting the electric packer to set and anchor the packer;
and starting the electric submersible pump to discharge liquid.
Further, the connecting an armored cable to the tool string includes:
connecting an armored cable with the tool string after the armored cable passes through the cable blowout prevention box;
prior to the lowering the tool string to the predetermined downhole location, the method further comprises:
hoisting the tool string through the Christmas tree into the well;
installing the cable blowout preventer on the christmas tree.
The tool string is respectively provided with an electric centralizer, an electric submersible pump, an electric packer and a check valve from bottom to top.
Further, the connecting an armored cable to the tool string includes:
the method comprises the steps that an armored cable in a vehicle-mounted roller instrument vehicle is connected with a tool string, a liquid discharge control system is configured on the vehicle-mounted roller instrument vehicle, a data acquisition system is arranged on an electric submersible pump, and the liquid discharge control system is used for transmitting data with the data acquisition system through the armored cable.
Optionally, after the starting the electrical submersible pump draining, the method further comprises:
the data acquisition system acquires downhole data;
and the liquid discharge control system receives the underground data acquired by the data acquisition system through the armored cable and adjusts the liquid discharge amount of the electric submersible pump according to the underground data.
In another aspect, a cased hole frac drainage system is provided, the system comprising:
from top to bottom in proper order with electrodynamic type packer, electric submersible pump and the electrodynamic type centralizer that the armoured cable electricity is connected respectively, the electrodynamic type packer the electric submersible pump with the electrodynamic type centralizer all sets up in the pit.
Optionally, the system further includes: the cable blowout prevention box is arranged on the Christmas tree;
and the armored cable sequentially penetrates through the cable blowout prevention box and the Christmas tree and then is electrically connected with the electric packer.
Optionally, the system further includes: and the armored cable penetrates through the check valve and is electrically connected with the electric packer.
Optionally, the system further includes: the liquid drainage control system is arranged on the vehicle-mounted roller instrument vehicle, one end of the armored cable is electrically connected with the liquid drainage control system, and the other end of the armored cable is electrically connected with the electric packer;
and the liquid discharge control system is used for transmitting data with the data acquisition system through the armored cable.
Further, the data acquisition system comprises: and a pressure gauge.
Further, the electrodynamic type packer, the electric submersible pump and the electrodynamic type centralizer are sequentially in threaded connection.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the cased well fracturing fluid drainage method provided by the embodiment of the invention, in the specific operation process, the connected tool string is lowered to a preset position in the well for fluid drainage, the connected tool string is respectively provided with the electric packer, the electric submersible pump and the electric centralizer from bottom to top, and is connected with the armored cable in an electric connection mode, and power fluid driving is not needed during fluid drainage, so that the method is not influenced by the power fluid property, and the fluid drainage efficiency can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.
FIG. 1 is a flow chart of a cased hole fracturing fluid discharge method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a cased hole fracturing fluid discharge method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cased hole fracturing drainage system according to a third embodiment of the present invention.
Wherein the reference numerals for the drawings are explained as follows:
the device comprises a vehicle-mounted roller instrument vehicle 1, a cable blowout prevention box 2, a Christmas tree 3, an armored cable 4, a check valve 5, an electric packer 6, an electric submersible pump 7, a data acquisition system 8 and an electric centralizer 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment provides a cased well fracturing fluid drainage method, and referring to fig. 1, the method specifically comprises the following processes:
and step 101, connecting a tool string, wherein the tool string comprises an electric centralizer, an electric submersible pump and an electric packer from bottom to top.
And 102, connecting the armored cable with a tool string.
And step 104, starting the electric centralizer to perform centralizing operation.
And 105, starting the electric packer to set and anchor the packer.
And 106, starting the electric submersible pump to drain.
In summary, in the cased hole fracturing fluid drainage method provided by the embodiment of the present invention, in a specific operation process, the connected tool string is lowered to a predetermined downhole position for fluid drainage, the connected tool string is respectively an electric packer, an electric submersible pump and an electric centralizer from bottom to top, and is electrically connected to the armored cable, and power fluid driving is not required during fluid drainage, so that the method is not affected by power fluid performance, and can improve fluid drainage efficiency.
The embodiment of the invention provides a cased well fracturing fluid drainage method, and referring to fig. 2, the method comprises the following steps:
As an example, as shown in fig. 3, the electric centralizer 9, the electric submersible pump 7, and the electric packer 6 may be connected in this order from the bottom up to obtain a connected tool string, or the electric submersible pump 7 and the electric packer 6 may be connected first, and then the connected electric submersible pump 7 and the electric packer 6 may be connected to the electric centralizer 9 to obtain a connected tool string. It should be noted that, in this embodiment, the connection order of the tool string is not limited, and the connection may be performed according to the connection order mentioned in this step, or may be performed in another connection order.
In practical application, the tool string may further include a check valve 5, where the check valve 5 is disposed above the electric packer 6, that is, the connected tool string includes, from bottom to top, an electric centralizer 9, an electric submersible pump 7, an electric packer 6, and the check valve 5. In addition, the check valve 5 can prevent the reverse flow of liquid, thereby protecting the submersible pump 7.
202. And an armored cable in the vehicle-mounted roller instrument vehicle is connected with the tool string, a liquid discharge control system is configured on the vehicle-mounted roller instrument vehicle, a data acquisition system is arranged on the electric submersible pump, and the liquid discharge control system is used for transmitting data through the armored cable and the data acquisition system.
Specifically, the armored cable connection tool string in the vehicle-mounted roller instrument vehicle refers to the fact that a roller in the vehicle-mounted roller instrument vehicle winds the armored cable, and then the connector at the other end of the armored cable is connected with the tool string. It should be noted that the armored cable is made of different material conductors and is installed in a metal sleeve with insulating material, and is processed into a flexible and solid assembly, and in practical application, when a liquid discharge control system configured on a vehicle-mounted roller instrument car and a data acquisition system arranged on an electric submersible pump carry out data transmission, the armored cable can be used as a carrier of data transmission.
In practical application, when liquid is drained, blowout can be prevented by installing the cable blowout prevention box, and construction safety can be guaranteed. For example, in connecting an armored cable to the tool string, the armored cable may be connected to the tool string after passing through the cable blowout preventer, the tool string may then be hoisted using a crane, passed through a christmas tree into a well, and finally the cable blowout preventer may be installed on the christmas tree.
It should be noted that the cable blowout prevention box mainly comprises an instrument buffer structure, a cylinder body sealing structure, an overflow port and an armored cable inlet, wherein the instrument buffer structure is communicated with the overflow port and the armored cable inlet through the cylinder body sealing structure. The armored cable tandem instrument can penetrate through the central axis of the whole blowout prevention box and is used for lifting and lowering the instrument.
The downhole predetermined position refers to a different liquid discharge position set by a worker according to different well conditions when liquid is discharged. Illustratively, a crane may be used to lift the tool string down to a predetermined downhole location.
And step 204, starting the electrodynamic type centralizer to perform centralizing operation.
It should be noted that the electrodynamic type centralizer mainly includes a control circuit and a direct current motor, and the control circuit can receive a start instruction and can start the direct current motor to rotate, so that the centralizing arm of the centralizer contracts or expands, thereby realizing the centralizing function.
Specifically, in this embodiment, electrodynamic type centralizer adopts electronic mode to right, and the flowing back control system that on-vehicle cylinder instrument car configuration can be through armoured cable transmission signal of telecommunication, and then starts electrodynamic type centralizer and right the operation.
And step 205, starting the electric packer to set and anchor the packer.
The electric packer mainly comprises a motor, a packer rubber cylinder, a transmission shaft, transmission nuts, supporting rods, supporting tiles and the like, and the electric packer specifically adopts the working principle that the motor rotates, the transmission shaft is driven by the motor to rotate, the two transmission nuts drive the two supporting rods to move in opposite directions, the supporting tiles are opened, and the packer rubber cylinder is sealed in an expanding manner. When the expansion sealing of the packer rubber cylinder is realized, the balance piston moves to the right to block the pressure relief hole, and the packer rubber cylinder divides the sleeve into a left oil cavity and a right oil cavity, so that the setting sealing of the packer rubber cylinder is completed.
Specifically, in this embodiment, the electrodynamic type packer adopts electronic mode to accomplish, and the flowing back control system of configuration on the on-vehicle cylinder instrument truck can be through the armoured cable transmission signal of telecommunication, and then carries out the packer to the electrodynamic type packer and sits and seal and the anchoring.
And step 206, starting the electric submersible pump to drain.
In practical application, before the electric submersible pump is started to discharge liquid, the annular pressurizing and pressure testing process needs to be completed, and then the electric submersible pump is started to discharge liquid.
It should be noted that the electric submersible pump can be an electric centrifugal pump formed by connecting a plurality of stages of vane guide wheels in series, when the submersible motor drives the vane guide wheel on the pump shaft to rotate at a high speed, the liquid in the impeller is thrown to the periphery of the impeller from the center of the impeller along a flow channel between the vanes under the action of centrifugal force, the pressure and the speed of the liquid are simultaneously increased under the action of the vanes, the speed can be converted into pressure energy under the further action of the guide wheels and simultaneously flows to the inlet of the next stage of impeller, and thus the fluid pressure energy is gradually increased under the action of the plurality of stages of vane guide wheels, and the fluid flows to the ground when the energy enough to overcome the pipeline resistance after the outlet of the pump is obtained, thereby achieving the purpose of oil exploitation.
The data acquisition system may acquire downhole data, step 207.
Specifically, the downhole data refers to pressure data acquired by a pressure gauge on the data acquisition system, and can be transmitted to a liquid discharge control system on the vehicle-mounted roller instrument car in real time through an armored cable. In addition, the present embodiment does not specifically limit the manner in which the downhole data is collected by the data collection system, and data collection can be performed by the prior art. In this embodiment, the data acquisition system is provided with a pressure gauge, and the pressure gauge can be used for acquiring downhole data.
Note that the pressure gauge is an instrument for measuring the pressure of the fluid. The measured pressure is typically compared to some reference pressure (e.g., atmospheric or other given pressure) and thus a relative or differential pressure is measured.
And 208, the liquid discharge control system receives the underground data acquired by the data acquisition system through the armored cable and adjusts the liquid discharge amount of the electric submersible pump according to the underground data.
Specifically, the armored cable is used as a carrier for data transmission, underground data collected by a pressure gauge on the data collection system is transmitted to a liquid discharge control system on the vehicle-mounted roller instrument car in real time, and the liquid discharge amount of the electric submersible pump can be adjusted according to the real-time data.
In summary, in the cased hole fracturing fluid drainage method provided by the embodiment of the present invention, in a specific operation process, the connected tool string is lowered to a predetermined downhole position for fluid drainage, the connected tool string is respectively an electric packer, an electric submersible pump and an electric centralizer from bottom to top, and is electrically connected to the armored cable, and power fluid driving is not required during fluid drainage, so that the method is not affected by power fluid performance, and can improve fluid drainage efficiency. In addition, the data acquisition system can transmit the downhole data to the liquid discharge control system in real time through the armored cable, and adjust the liquid discharge amount of the electric submersible pump according to the downhole data, so that the liquid discharge efficiency is improved.
Referring to fig. 3, an embodiment of the present invention provides a cased well frac drainage system, including:
the electric packer 6, the electric submersible pump 7 and the electric centralizer 9 are sequentially and electrically connected with the armored cable from top to bottom, and the electric packer 6, the electric submersible pump 7 and the electric centralizer 9 are arranged underground.
In summary, in the cased hole fracturing fluid drainage method provided by the embodiment of the present invention, in a specific operation process, the connected tool string is lowered to a predetermined downhole position for fluid drainage, the connected tool string is respectively an electric packer, an electric submersible pump and an electric centralizer from bottom to top, and is electrically connected to the armored cable, and power fluid driving is not required during fluid drainage, so that the method is not affected by power fluid performance, and can improve fluid drainage efficiency.
Further, the system further comprises: the cable blowout prevention box 2 and the Christmas tree 3, wherein the cable blowout prevention box 2 is arranged on the Christmas tree 3.
The armored cable 4 sequentially penetrates through the cable blowout prevention box 2 and the Christmas tree 4 and then is electrically connected with the electric packer 6.
Further, the system further comprises: and the single-flow valve 5 are connected with the electric packer 6, and the armored cable 4 penetrates through the single-flow valve 5 and is electrically connected with the electric packer 6.
Further, the system further comprises: the vehicle-mounted roller instrument vehicle 1 is provided with a liquid drainage control system, one end of an armored cable 4 is electrically connected with the liquid drainage control system, and the other end of the armored cable is electrically connected with an electric packer 6.
The electric submersible pump 7 is provided with a data acquisition system 8, and the liquid discharge control system is used for transmitting data with the data acquisition system 8 through the armored cable 4.
Wherein, data acquisition system includes: and a pressure gauge.
In particular, a pressure gauge is an instrument used to measure the pressure of a fluid. The measured pressure is typically compared to some reference pressure (e.g., atmospheric or other given pressure) and thus a relative or differential pressure is measured. In practical application, the pressure gauge can be used for collecting underground data, and the underground data is transmitted to the liquid discharge control system on the vehicle-mounted roller instrument car 1 in real time through the armored cable 4.
Further, an electric packer 6, an electric submersible pump 7 and an electric centralizer 9 are sequentially in threaded connection.
Specifically, in the present embodiment, the connection manner of the electric packer 6, the electric submersible pump 7, and the electric centralizer 9 is not limited, and a threaded connection is used here.
In summary, in the cased hole fracturing fluid drainage method provided by the embodiment of the present invention, in a specific operation process, the connected tool string is lowered to a predetermined downhole position for fluid drainage, the connected tool string is respectively an electric packer, an electric submersible pump and an electric centralizer from bottom to top, and is electrically connected to the armored cable, and power fluid driving is not required during fluid drainage, so that the method is not affected by power fluid performance, and can improve fluid drainage efficiency. In addition, the data acquisition system can transmit the downhole data to the liquid discharge control system in real time through the armored cable, and adjust the liquid discharge amount of the electric submersible pump according to the downhole data, so that the liquid discharge efficiency is improved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
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.
Claims (7)
1. A cased well frac drainage method, comprising:
the tool string is connected and comprises an electric centralizer, an electric submersible pump and an electric packer from bottom to top;
connecting an armored cable in a vehicle-mounted roller instrument vehicle with the tool string, wherein a liquid discharge control system is configured on the vehicle-mounted roller instrument vehicle, a data acquisition system is arranged on the electric submersible pump, and the liquid discharge control system is used for transmitting data with the data acquisition system through the armored cable;
lowering the tool string through the armored cable to a predetermined downhole location;
starting the electric centralizer to perform centralizing operation;
starting the electric packer to set and anchor the packer;
starting the electric submersible pump to drain liquid;
the data acquisition system acquires pressure data by controlling the pressure gauge;
and the liquid discharge control system receives the pressure data acquired by the data acquisition system through the armored cable and adjusts the liquid discharge amount of the electric submersible pump according to the pressure data.
2. The method of claim 1, wherein said connecting an armored electrical cable to the tool string comprises:
connecting an armored cable with the tool string after the armored cable passes through the cable blowout prevention box;
prior to the lowering the tool string to the predetermined downhole location, the method further comprises:
hoisting the tool string through the Christmas tree into the well;
installing the cable blowout preventer on the christmas tree.
3. The method of claim 1, wherein the tool string comprises, from bottom to top, an electric centralizer, an electric submersible pump, an electric packer, and a check valve, respectively.
4. A cased-hole frac drainage system, the system comprising:
the electric packer, the electric submersible pump and the electric centralizer are all arranged underground;
the system further comprises: the liquid drainage control system is arranged on the vehicle-mounted roller instrument vehicle, one end of the armored cable is electrically connected with the liquid drainage control system, and the other end of the armored cable is electrically connected with the electric packer;
the electric submersible pump is provided with a data acquisition system, and the liquid discharge control system is used for transmitting data with the data acquisition system through the armored cable;
the data acquisition system acquires pressure data by controlling the pressure gauge; and the liquid discharge control system receives the pressure data acquired by the data acquisition system through the armored cable and adjusts the liquid discharge amount of the electric submersible pump according to the pressure data.
5. The system of claim 4, further comprising: the cable blowout prevention box is arranged on the Christmas tree;
and the armored cable sequentially penetrates through the cable blowout prevention box and the Christmas tree and then is electrically connected with the electric packer.
6. The system of claim 4, further comprising: a check valve is arranged on the upper portion of the valve body,
the single-flow valve is connected with the electric packer, and the armored cable penetrates through the single-flow valve to be electrically connected with the electric packer.
7. The system of any one of claims 4 to 6, wherein the electrically operated packer, the electrical submersible pump and the electrically operated centralizer are threaded in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799784.8A CN107780912B (en) | 2016-08-31 | 2016-08-31 | Cased well fracturing fluid drainage method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799784.8A CN107780912B (en) | 2016-08-31 | 2016-08-31 | Cased well fracturing fluid drainage method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107780912A CN107780912A (en) | 2018-03-09 |
| CN107780912B true CN107780912B (en) | 2020-08-11 |
Family
ID=61451912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610799784.8A Active CN107780912B (en) | 2016-08-31 | 2016-08-31 | Cased well fracturing fluid drainage method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107780912B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110872940A (en) * | 2018-08-29 | 2020-03-10 | 中国石油天然气股份有限公司 | Liquid discharge device and using method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003042496A1 (en) * | 2001-11-15 | 2003-05-22 | Bp Exploration Operating Company Limited | Method for diverting treatment fluid into a low permeability zone of a formation |
| CN1563669A (en) * | 2004-03-22 | 2005-01-12 | 北京中石吉通石油工程技术开发有限公司 | Pump drawing type formation tester through cased hole cable |
| CN104912545A (en) * | 2015-06-08 | 2015-09-16 | 河北昆瑞工程技术有限公司 | Well testing system combining electric control type oil pipe inner packer and direct reading pressure meter and well testing method combining electric control type oil pipe inner packer and direct reading pressure meter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6568475B1 (en) * | 2000-06-30 | 2003-05-27 | Weatherford/Lamb, Inc. | Isolation container for a downhole electric pump |
| US7066248B2 (en) * | 2003-06-11 | 2006-06-27 | Wood Group Esp, Inc. | Bottom discharge seal section |
| CN2661917Y (en) * | 2003-12-16 | 2004-12-08 | 中国海洋石油总公司 | Oil recovery system with electric submersible screw pump suspended by cable |
| CN202300336U (en) * | 2011-10-28 | 2012-07-04 | 中国石油化工股份有限公司 | Electric pump oil-extracting pipe column with ground hydraulic control oil-pipe injection functions |
| CN105239970A (en) * | 2015-11-12 | 2016-01-13 | 杭州乾景科技有限公司 | Submersible direct-drive screw pump oil production equipment |
-
2016
- 2016-08-31 CN CN201610799784.8A patent/CN107780912B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003042496A1 (en) * | 2001-11-15 | 2003-05-22 | Bp Exploration Operating Company Limited | Method for diverting treatment fluid into a low permeability zone of a formation |
| CN1563669A (en) * | 2004-03-22 | 2005-01-12 | 北京中石吉通石油工程技术开发有限公司 | Pump drawing type formation tester through cased hole cable |
| CN104912545A (en) * | 2015-06-08 | 2015-09-16 | 河北昆瑞工程技术有限公司 | Well testing system combining electric control type oil pipe inner packer and direct reading pressure meter and well testing method combining electric control type oil pipe inner packer and direct reading pressure meter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107780912A (en) | 2018-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104564001B (en) | The method of many cluster pressure breaks of horizontal well and many cluster perforating and fracturing tubing strings of implementation the method | |
| US8893775B2 (en) | Multiple electric submersible pump system | |
| OA11985A (en) | Method of deploying an electrically driven fluid transducer system in a well. | |
| CN110593846A (en) | Gas well gas-liquid separate production well completion pipe string | |
| CN108119100B (en) | Oil well lifting system and oil pumping method thereof | |
| CN104653136A (en) | Method for drilling and grinding composite bridge plug by conventional oil pipe underground power | |
| CN107780912B (en) | Cased well fracturing fluid drainage method and system | |
| CN106593387A (en) | Method for realizing staged multi-cluster fracturing of horizontal well | |
| CN112727394B (en) | Coiled tubing hydraulic workover string and method | |
| CN113027387A (en) | Oil well interval pumping control system and method | |
| CN111827948A (en) | Open hole fishbone production increasing and sieve tube well completion integrated tool | |
| CN105604509A (en) | Electric submersible pump pipe string for optical fiber monitoring of horizontal well | |
| RU2379472C1 (en) | Method of well's horizontal borehole part repair insulation works | |
| CN110529082A (en) | A kind of gas-liquid separation tubing string for offshore gas well liquid discharging gas producing | |
| RU2533470C2 (en) | Procedure for recovery of tightness in flow strings | |
| CN103306655B (en) | A kind of dragging staged fracturing method with pressure | |
| RU2620099C1 (en) | Method of increasing productivity of development wells and injection capacity of injection wells | |
| CN105386743A (en) | Swabbing device for well logging of rod pumped well and well logging method based on device | |
| CN210564470U (en) | Ultrasonic blockage removing device for geothermal well | |
| CN212428773U (en) | Series operation tubular column of pumping ball seat and many clusters of perforation | |
| CN110939412B (en) | Development method for realizing advanced water injection and early water injection by utilizing horizontal well | |
| RU2601685C1 (en) | Method of operating flooded wells and system therefor | |
| CN114607313A (en) | Solid-phase-free gel plugging method | |
| CN209818031U (en) | Oil extraction device of canned composite continuous oil pipe conveyor unit | |
| RU2559999C2 (en) | Well development and operation method and configuration of downhole equipment for its implementation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |