CN111502622A - Concentric layered steam drive pipe column structure and layered steam drive method thereof - Google Patents
Concentric layered steam drive pipe column structure and layered steam drive method thereof Download PDFInfo
- Publication number
- CN111502622A CN111502622A CN201910089893.4A CN201910089893A CN111502622A CN 111502622 A CN111502622 A CN 111502622A CN 201910089893 A CN201910089893 A CN 201910089893A CN 111502622 A CN111502622 A CN 111502622A
- Authority
- CN
- China
- Prior art keywords
- pipe
- stratum
- layered steam
- packer
- steam
- 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
- 238000010795 Steam Flooding Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011160 research Methods 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a concentric layered steam-driven tubular column structure and a layered steam-driven method thereof, wherein the structure comprises an inner tube and an outer tube which are coaxially arranged, a tubular column annulus is formed between the inner tube and the outer tube, an oil sleeve annulus is formed between the outer tube and a sleeve, a first packer is arranged at the position of the oil sleeve annulus above a first stratum, and a second packer is arranged at the position of the oil sleeve annulus between the first stratum and a second stratum; a differential pressure sliding sleeve integrated layered steam injection valve is arranged at a position, corresponding to the first stratum, on the outer pipe; a concentric layered steam drive sealing device is arranged between the second packer and the second stratum on the inner pipe, and a constant pressure ball seat is arranged below the bottom end of the inner pipe in the outer pipe. The structure and the layered steam driving method thereof realize the annular internal sealing effect of the tubular column, have high production efficiency and high reliability, have short operation period, can realize layered steam injection by one tubular column, realize relatively uniform steam injection of a steam injection well, improve the development effect and provide better basic conditions for the regulation and control of the next steam injection well.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to a concentric layered steam drive pipe column structure and a layered steam drive method thereof.
Background
At present, the domestic steam flooding layered steam injection technology cannot effectively solve the layered injection problem under different injection pressure systems (mainly the problems of long-acting sealing and performance stability under the conditions of high temperature and normal temperature alternation of matched tools such as packers and plug-in sealing) and the multilayer injection problem under the same injection pressure system (mainly the problem of how to reasonably distribute the steam injection amount of different oil layers according to the design when the interlayer pressure difference is large). Aiming at the problems, technical problems are developed, the longitudinal utilization condition of an oil layer is improved, the contradiction of non-uniform steam injection is solved, and research and field test of a concentric layered steam drive pipe column technology are needed to be developed so as to realize relatively uniform steam injection of a steam injection well, improve the development effect and provide better basic conditions for regulation and control of a next steam injection well.
Therefore, the inventor provides a concentric layered steam-drive tubular column structure and a layered steam-drive method thereof by virtue of experience and practice of related industries for many years, so as to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to provide a concentric layered steam-driven pipe column structure and a layered steam-driven method thereof, which overcome the problems in the prior art, realize the sealing effect in the pipe column annulus, have high production efficiency, high reliability and short operation period, can realize layered steam injection by one pipe column, realize relatively uniform steam injection of a steam injection well, improve the development effect and provide better basic conditions for the regulation and control of the next steam injection well.
The concentric layered steam-driven tubular column structure comprises an inner tube and an outer tube which are coaxially and radially arranged at intervals, wherein a tubular column annulus is formed between the inner tube and the outer tube, an oil casing annulus is formed between the outer tube and a sleeve, a first packer is arranged at the position, above a first stratum, of the oil casing annulus, and a second packer is arranged at the position, between the first stratum and a second stratum, of the oil casing annulus; a differential pressure sliding sleeve integrated layered steam injection valve is arranged at a position, corresponding to the first stratum, on the outer pipe, and can be communicated with a pipe column annular space and an oil sleeve annular space corresponding to the first stratum; a concentric layered steam-driven sealing device is arranged on the inner pipe and positioned between the second packer and the second stratum, and the concentric layered steam-driven sealing device can expand inwards to seal the tubular column annulus; and a constant-pressure ball seat which can plug the outer pipe and can fall under the action of pressure is arranged below the bottom end of the inner pipe in the outer pipe.
In a preferred embodiment of the invention, the outer pipe comprises a vacuum insulated pipe with a telescoping pipe connected in series at a location above the first packer.
In a preferred embodiment of the present invention, a bottom end of the outer tube is provided with a flare opening with an enlarged diameter.
In a preferred embodiment of the invention, the first packer is a high temperature packer.
In a preferred embodiment of the present invention, the inner pipe is an oil pipe which is axially and consistently arranged.
In a preferred embodiment of the present invention, a sieve tube is disposed at the bottom end of the inner tube, the bottom end of the sieve tube is closed, and sieve holes are disposed on the side wall of the sieve tube.
The object of the present invention is also achieved by a layered steam drive method using the aforementioned concentric layered steam drive string structure, comprising the steps of,
step a, assembling a concentric layered steam drive pipe column structure, and putting the concentric layered steam drive pipe column structure into a designed position in a well;
step b, injecting water into the inner pipe and the outer pipe simultaneously to fill the whole pipe column;
c, closing the inner pipe, pressing the annular space of the pipe column through the outer pipe, and expanding and setting the concentric layered steam drive sealing device inwards to seal the annular space of the pipe column when the annular space of the pipe column is pressed to 8 MPa; after the pressure is continuously increased to 15MPa, the first packer realizes setting, the oil sleeve annulus above the first stratum is sealed, after the pressure is increased to 18MPa, the differential pressure sliding sleeve integrated layered steam injection valve is opened, the tubular column annulus and the oil sleeve annulus corresponding to the first stratum are communicated, and steam injection exploitation of the tubular column annulus to the first stratum is realized;
d, pressing the inner pipe to 18MPa, removing the constant pressure ball seat, and injecting steam into the second stratum by the inner pipe for exploitation; the inner pipe continues to inject steam, and after the inner pipe reaches a certain temperature, a second packer is set, so that annular plugging of the oil sleeve is guaranteed, and concentric layered steam injection is realized.
From the above, the concentric layered steam drive pipe column structure and the layered steam drive method thereof provided by the invention have the following beneficial effects:
in the concentric layered steam drive tubular column structure provided by the invention, the concentric layered steam drive sealing device seals and separates tubular column annular space through inward expansion, so as to realize the sealing and layering of the inner pipe and the outer pipe, and the pressure difference sliding sleeve integrated layered steam injection valve and the bottom end of the outer pipe respectively form steam injection channels of a first stratum and a second stratum; the concentric layered steam drive pipe column structure and the layered steam drive method thereof provided by the invention have the advantages of high production efficiency, high reliability and short operation period, and are beneficial to popularization and use.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: is a schematic diagram of the concentric layered steam-driven tubular column structure of the invention.
In the figure:
100. a concentric layered steam drive pipe column structure;
101. a tubular column annulus; 102. an oil jacket annulus;
1. an inner tube; 11. a screen pipe;
2. an outer tube; 21. a vacuum heat insulation pipe; 22. a telescopic pipe; 23. a bell mouth;
31. a first packer; 32. a second packer;
4. a differential pressure sliding sleeve integrated layered steam injection valve;
5. a concentric layered steam drive sealing device;
6. a constant pressure ball seat;
8. a sleeve;
91. a first earth formation; 92. a second earth formation.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention provides a concentric layered steam-driven tubular column structure 100, which comprises an inner tube 1 and an outer tube 2 coaxially and radially arranged at an interval, wherein a tubular column annulus 101 is formed between the inner tube 1 and the outer tube 2, an oil jacket annulus 102 is formed between the outer tube 2 and a casing 8 (when no casing is used, an oil well annulus is formed between the outer tube and a well wall, which is equivalent to the oil jacket annulus here), a first packer 31 is arranged at a position of the oil jacket annulus 102 above a first stratum 91, and a second packer 32 is arranged at a position of the oil jacket annulus 102 between the first stratum 91 and a second stratum 92; a differential pressure sliding sleeve integrated layered steam injection valve 4 is arranged on the outer pipe 2 at a position corresponding to the first stratum 91, and the differential pressure sliding sleeve integrated layered steam injection valve 4 can be communicated with a pipe column annulus 101 and an oil sleeve annulus 102 corresponding to the first stratum 91; a concentric layered steam-driven sealing device 5 is arranged on the inner pipe 1 between the second packer 32 and the second stratum 92, and the concentric layered steam-driven sealing device 5 can expand inwards to seal the tubular column annulus 101; and a constant pressure ball seat 6 which can plug the outer tube 2 and can fall under the action of pressure is arranged below the bottom end of the inner tube 1 in the outer tube 2. The constant-pressure ball seat 6 is mainly used for plugging the outer pipe 2 from the bottom, continuing to pressurize after the concentric layered steam drive sealing device 5 and the first packer 31 are set by pressurizing in the outer pipe 2, and opening the differential pressure sliding sleeve integrated layered steam injection valve 4 to realize steam injection exploitation of the tubular column annulus 101 to the first stratum; after the inner pipe continues to be pressurized to reach the dropping pressure, the constant pressure ball seat 6 drops, and the inner pipe 1 injects steam to the second stratum 92 for exploitation.
In the concentric layered steam drive tubular column structure provided by the invention, the concentric layered steam drive sealing device seals and separates tubular column annular space through inward expansion, so as to realize the sealing and layering of the inner pipe and the outer pipe, and the pressure difference sliding sleeve integrated layered steam injection valve and the bottom end of the outer pipe respectively form steam injection channels of a first stratum and a second stratum; the concentric layered steam-driven tubular column structure provided by the invention has the advantages of simple structure, high production efficiency, high reliability and short operation period, and is favorable for popularization and use.
Further, as shown in FIG. 1, the outer pipe 2 includes a vacuum insulation pipe 21, and a telescopic pipe 22 is connected in series to the vacuum insulation pipe 21 at a position above the first packer 31. In one embodiment of the present invention, the vacuum insulation tube 21 is
A vacuum heat insulation pipe with an inner diameter of 76mm and an outer diameter of 114 mm; extension tube 22 is an SSG extension tube with an inner diameter of 76mm and an outer diameter of 146 mm.
Further, as shown in fig. 1, a bell mouth 23 with an enlarged diameter is provided at the bottom end of the outer tube 2. The arrangement of the bell mouth 23 is more beneficial to smooth steam injection at the bottom end of the outer pipe 2.
Further, the first packer 31 is a high temperature packer. In a specific embodiment of the invention, the first packer 31 is a Y441-150X76 high-temperature packer, the temperature resistance of the packer can reach 350 ℃, a double-cone bidirectional anchoring structure is adopted, the performance is stable, and the seating and sealing are reliable; the second packer 32 is a Y361-150X76 packer. The Y441-150X76 high-temperature packer and the Y361-150X76 packer are used in a combined mode, the Y441-150X76 high-temperature packer is arranged on the upper portion of the oil casing annulus, the Y361-150X76 packer is arranged on the lower portion of the oil casing annulus, and the Y441-150X76 packer and the Y361-150X76 packer jointly guarantee double plugging of the oil casing annulus.
Further, the inner pipe 1 is an oil pipe which is axially and consistently arranged. In one embodiment of the invention, inner tube 1 is a 1.9' unconjugated tubing having an inner diameter of 40.3mm and an outer diameter of 53.6 mm.
In the present embodiment, as shown in fig. 1, a screen pipe 11 is provided at the bottom end of the inner pipe 1, the bottom end of the screen pipe 11 is closed, and a screen hole is provided in the side wall of the screen pipe 11. The bottom of the inner pipe 1 is injected with steam through the sieve holes to enter the lower part of the pipe column annular space 101.
The present invention provides a layered steam drive method using the concentric layered steam drive tubular column structure 100 of the present invention, comprising the steps of,
step a, firstly, assembling a concentric layered steam-driven tubular column structure 100, and putting the tubular column structure into a designed position in a well;
and step b, simultaneously injecting water into the inner pipe 1 and the outer pipe 2, and filling the whole pipe column.
Step c, closing a water injection valve (in the prior art, shown in the figure) of the inner pipe 1, pressurizing through the outer pipe 2, and when the pressure reaches 8MPa (the value is determined according to the actual production condition and is not limited to 8MPa), expanding and setting the concentric layered steam drive sealing device 5 inwards to seal the tubular column annulus 101; after the pressure is continuously increased to 15MPa (the value is determined according to the actual production condition and is not limited to 15MPa), the first packer 31 realizes setting, the oil sleeve annulus 102 above the first stratum 91 is sealed, and after the pressure is increased to 18MPa (the value is determined according to the actual production condition and is not limited to 18MPa), the differential pressure sliding sleeve integrated layered steam injection valve 4 is opened to communicate the tubular column annulus 101 and the oil sleeve annulus 102 corresponding to the first stratum 91, so that steam injection and production from the tubular column annulus 101 to the first stratum 91 are realized.
And d, pressing the inner pipe 1 to 18MPa (the value is determined according to the actual production condition and is not limited to 18MPa), pressing the constant pressure ball seat 6 off, and injecting steam into the second stratum 92 for exploitation through the sieve pipe 11 and the bell mouth 23 by the inner pipe 1. The inner tube 1 continues to inject steam, and after reaching the design temperature, the second packer 32 is set (in a specific embodiment, the initial sealing temperature is about 100 ℃, and the temperature is 200 ℃ when the setting is complete), so that the oil sleeve annulus 102 is guaranteed to be blocked, and concentric layered steam injection is realized.
From the above, the concentric layered steam drive pipe column structure and the layered steam drive method thereof provided by the invention have the following beneficial effects:
in the concentric layered steam drive tubular column structure provided by the invention, the concentric layered steam drive sealing device seals and separates tubular column annular space through inward expansion, so as to realize the sealing and layering of the inner pipe and the outer pipe, and the pressure difference sliding sleeve integrated layered steam injection valve and the bottom end of the outer pipe respectively form steam injection channels of a first stratum and a second stratum; the concentric layered steam drive pipe column structure and the layered steam drive method thereof provided by the invention have the advantages of high production efficiency, high reliability and short operation period, and are beneficial to popularization and use.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (7)
1. A concentric layered steam-driven pipe column structure is characterized by comprising an inner pipe and an outer pipe which are coaxially and radially arranged at intervals, wherein a pipe column annular space is formed between the inner pipe and the outer pipe, an oil sleeve annular space is formed between the outer pipe and a sleeve, a first packer is arranged at the position, above a first stratum, of the oil sleeve annular space, and a second packer is arranged at the position, between the first stratum and a second stratum, of the oil sleeve annular space; a differential pressure sliding sleeve integrated layered steam injection valve is arranged at a position, corresponding to the first stratum, on the outer pipe, and can be communicated with a pipe column annular space and an oil sleeve annular space corresponding to the first stratum; a concentric layered steam-driven sealing device is arranged on the inner pipe and positioned between the second packer and the second stratum, and the concentric layered steam-driven sealing device can expand inwards to seal the tubular column annulus; and a constant-pressure ball seat which can plug the outer pipe and can fall under the action of pressure is arranged below the bottom end of the inner pipe in the outer pipe.
2. The concentric layered steam drive string structure according to claim 1, wherein the outer pipe comprises a vacuum insulated pipe having a telescoping pipe connected in series at a location above the first packer.
3. The concentric layered steam drive pipe column structure according to claim 1, wherein the bottom end of the outer pipe is provided with a bell mouth with an increased diameter.
4. The concentric layered steam drive string structure of claim 1, wherein the first packer is a high temperature packer.
5. The concentric layered steam drive string structure according to claim 1, wherein the inner pipe is an oil pipe that is axially disposed therethrough.
6. The concentric layered steam driven pipe column structure as recited in claim 1, wherein the bottom end of the inner pipe is provided with a screen, the bottom end of the screen is closed, and the side wall of the screen is provided with a screen hole.
7. A method of layered steam flooding using a concentric layered steam drive string structure according to any one of claims 1 to 6, characterized by comprising the steps of,
step a, assembling a concentric layered steam drive pipe column structure, and putting the concentric layered steam drive pipe column structure into a designed position in a well;
step b, injecting water into the inner pipe and the outer pipe simultaneously to fill the whole pipe column;
c, closing the inner pipe, pressing the annular space of the pipe column through the outer pipe, and expanding and setting the concentric layered steam drive sealing device inwards to seal the annular space of the pipe column when the annular space of the pipe column is pressed to 8 MPa; after the pressure is continuously increased to 15MPa, the first packer realizes setting, the oil sleeve annulus above the first stratum is sealed, after the pressure is increased to 18MPa, the differential pressure sliding sleeve integrated layered steam injection valve is opened, the tubular column annulus and the oil sleeve annulus corresponding to the first stratum are communicated, and steam injection exploitation of the tubular column annulus to the first stratum is realized;
d, pressing the inner pipe to 18MPa, removing the constant pressure ball seat, and injecting steam into the second stratum by the inner pipe for exploitation; the inner pipe continues to inject steam, and after the inner pipe reaches the design temperature, a second packer is set, so that annular plugging of the oil sleeve is guaranteed, and concentric layered steam injection is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089893.4A CN111502622A (en) | 2019-01-30 | 2019-01-30 | Concentric layered steam drive pipe column structure and layered steam drive method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089893.4A CN111502622A (en) | 2019-01-30 | 2019-01-30 | Concentric layered steam drive pipe column structure and layered steam drive method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111502622A true CN111502622A (en) | 2020-08-07 |
Family
ID=71872410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910089893.4A Pending CN111502622A (en) | 2019-01-30 | 2019-01-30 | Concentric layered steam drive pipe column structure and layered steam drive method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111502622A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856839A (en) * | 2021-03-29 | 2021-05-28 | 青海九零六工程勘察设计院 | Geothermal mining and irrigating equipment special for geothermal energy |
| CN114575810A (en) * | 2020-12-01 | 2022-06-03 | 中国石油天然气股份有限公司 | Layered treatment and layered steam injection process pipe column |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070187103A1 (en) * | 2006-02-13 | 2007-08-16 | Crichlow Henry B | Hydrocarbon Recovery from Subterranean Formations |
| CN202215220U (en) * | 2011-09-23 | 2012-05-09 | 中国石油天然气股份有限公司 | Concentric type layered steam-driven underground process pipe column |
| CN203285410U (en) * | 2013-04-11 | 2013-11-13 | 中国石油天然气股份有限公司 | Steam injection process pipe column capable of improving utilization degree of horizontal section of thickened oil horizontal well |
| CN103758496A (en) * | 2014-01-02 | 2014-04-30 | 中国石油天然气股份有限公司 | Nitrogen flooding concentric layered steam injection pipe column and method |
| CN208380559U (en) * | 2018-03-05 | 2019-01-15 | 中国石油天然气股份有限公司 | Tubular column and double-tube washable well separate-layer water injection system |
-
2019
- 2019-01-30 CN CN201910089893.4A patent/CN111502622A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070187103A1 (en) * | 2006-02-13 | 2007-08-16 | Crichlow Henry B | Hydrocarbon Recovery from Subterranean Formations |
| CN202215220U (en) * | 2011-09-23 | 2012-05-09 | 中国石油天然气股份有限公司 | Concentric type layered steam-driven underground process pipe column |
| CN203285410U (en) * | 2013-04-11 | 2013-11-13 | 中国石油天然气股份有限公司 | Steam injection process pipe column capable of improving utilization degree of horizontal section of thickened oil horizontal well |
| CN103758496A (en) * | 2014-01-02 | 2014-04-30 | 中国石油天然气股份有限公司 | Nitrogen flooding concentric layered steam injection pipe column and method |
| CN208380559U (en) * | 2018-03-05 | 2019-01-15 | 中国石油天然气股份有限公司 | Tubular column and double-tube washable well separate-layer water injection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575810A (en) * | 2020-12-01 | 2022-06-03 | 中国石油天然气股份有限公司 | Layered treatment and layered steam injection process pipe column |
| CN112856839A (en) * | 2021-03-29 | 2021-05-28 | 青海九零六工程勘察设计院 | Geothermal mining and irrigating equipment special for geothermal energy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106555574B (en) | Sand prevention and steam injection integrated device and method | |
| CN105545221A (en) | Shale gas well no-killing production tubular column capable of being lifted up and put down under no pressure and construction method | |
| RU2013146591A (en) | Borehole tool for expanding casing strings and a method for expanding casing strings with its use | |
| CN102102506A (en) | Fire flooding oil extraction layered steam injection method and separate injection tubular column adopted by same | |
| CN101975041B (en) | Well cementing method for avoiding coal bed and device thereof | |
| CN111502622A (en) | Concentric layered steam drive pipe column structure and layered steam drive method thereof | |
| CN104213888B (en) | A kind of thick oil thermal extraction down-hole steam injection string | |
| CN108625830A (en) | Ball-throwing type selective sand control process pipe string and its method | |
| CN104481484A (en) | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column | |
| CN205422562U (en) | Not kill -job of shale gas well is not taken and has been pressed down flow string | |
| CN104405355A (en) | Injection and production string of horizontal well | |
| CN212202023U (en) | Screw pump injection-production integrated production device | |
| CN111577204B (en) | Underground cascade sliding sleeve system | |
| CN107345479A (en) | Steam injection pipe column | |
| CN105401931B (en) | Casing sliding sleeve fracturing production integrated tubular column and fracturing production method thereof | |
| CN210134883U (en) | Injection-production integrated pipe column in same well | |
| CN217055094U (en) | Pressure type packer | |
| CN111502625B (en) | Layered fireflood chemical ignition concentric double-pipe column and mining method | |
| CN111255424B (en) | Thermal production pipe column and oil production method thereof | |
| CN106555568B (en) | Fracturing sliding sleeve | |
| CN111425174B (en) | Thermal concentric layered electric ignition process pipe column | |
| CN101881149B (en) | Heat injection drilling and sealing method of heating coalbed | |
| CN110118071A (en) | A kind of thermal production well layering section packing device and method | |
| CN110017127A (en) | The water integrated device of acid fracturing control, acid fracturing water control pipe column and acid fracturing water control method | |
| CN211115946U (en) | Casing cementing slim hole staged fracturing 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200807 |