CN105863579A - Production tubular column adopted for thermal recovery of heavy oil in horizontal well - Google Patents
Production tubular column adopted for thermal recovery of heavy oil in horizontal well Download PDFInfo
- Publication number
- CN105863579A CN105863579A CN201610309043.7A CN201610309043A CN105863579A CN 105863579 A CN105863579 A CN 105863579A CN 201610309043 A CN201610309043 A CN 201610309043A CN 105863579 A CN105863579 A CN 105863579A
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- China
- Prior art keywords
- horizontal
- pipe
- oil
- segment
- horizontal well
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/088—Wire screens
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a production tubular column adopted for thermal recovery of heavy oil in a horizontal well. The production tubular column comprises a production casing, the horizontal segment of the production casing is connected with two primary screen pipes, an oil pumping pipe is fixed into the vertical segment of the production casing through a packer, the horizontal segment of the oil pumping pipe freely extends in the horizontal well segment composed of the two primary screen pipes and the casing, and the horizontal segment of the oil pumping pipe is provided with a secondary screen pipe; each screen hole of the secondary screen pipe comprises a shrinkage segment, a straight segment and an impact segment, the inner diameters of the shrinkage segments are gradually reduced outwards in the radial direction of the pipe diameter of the secondary screen pipe, and the inner diameters of the impact segments are gradually reduced outwards in the radial direction of the secondary screen pipe. In a horizontal well, an open well is divided by two outer casing peckers into three parts, in other words, oil liquid in the horizontal well enters the position surrounding the oil pumping pipe from the two primary screen pipes; at the moment, oil liquid entering from the two primary screen pipes is conveyed to the upper portion of the vertical segment of the production casing by passing through the tail end of the oil pumping pipe and the secondary screen pipe on the horizontal segment of the oil pumping pipe, and thus segmented extraction of the horizontal well is completed.
Description
Technical field
The invention belongs to horizontal well production technical field, particularly relate to the flow string of a kind of thick oil horizontal well thermal recovery.
Background technology
Viscous crude is the important component part in the petroleum hydrocarbon energy, and its feature is as follows:
(1) colloid in viscous crude is high with bitumen content, and light ends is little.And along with resin and asphalt
Content increases the relative density of viscous crude and viscosity increases the most accordingly.
(2) thick oil viscosity is for very temperature sensitive, and along with the increase of temperature, viscosity drastically declines.And
Viscosity of crude is the biggest, and this change is the most obvious.
(3) in viscous crude, the hetero atom such as sulfur, oxygen, nitrogen is more.
(4) in viscous crude, paraffin content is the most relatively low, but also having only a few oil field is " double high oil field ", and i.e. asphalt content is high, paraffin content is the highest, is characterized as high viscosity high condensation point crude oil.
(5) same heavy crude reservoir, oil property usually has the biggest difference between each well in the different well sections and plane of vertical oil reservoir.
The most perfect along with Horizontal Well Drilling completion and production technique, horizontal well is conducive to improving well yield, increasing recoverable reserves and improve oil recovery rate, and current horizontal well development technology is applied to various types of oil reservoir.For the sandstone or Carbonate Reservoir of homogenizing, traditional barefoot completion, primary sieve tube completion, perforation completion mode can serve problem to horizontal well development band.Owing to level of production section is longer, being affected by pit shaft friction drag, the producing pressure differential of whole horizontal segment is different, heel end producing pressure differential is maximum, and toe-end producing pressure differential is minimum, ultimately results in horizontal segment production fluid uneven, the situation of toe-end not production fluid even occurs, significantly impacts the development effectiveness of horizontal well.
Summary of the invention
The invention reside in the flow string that a kind of thick oil horizontal well thermal recovery is provided, reduce the producing pressure differential of heel end, amplify the producing pressure differential of toe-end, it is achieved horizontal segment relatively evenly output, thus realize horizontal well in segments exploitation.
The present invention is achieved through the following technical solutions:
A kind of flow string of thick oil horizontal well thermal recovery, production casing including L-shaped, the horizontal segment of described production casing connects two primary screen casings, sleeve pipe is arranged between two primary screen casings, it is fixed with the oil pick-up tube of L-shaped by packer in the vertical section of described production casing, packer in pipe is installed in sleeve pipe, the net horizontal section that the horizontal ends of described oil pick-up tube is constituted at two described primary screen casings and sleeve pipe freely extends, two grades of screen casings it are provided with on the horizontal segment of oil pick-up tube, the primary screen casing that end is just being connected by described two grades of screen casings with production casing horizontal segment, two external packer of pipe are installed outside sleeve pipe, and bore hole is separated into three parts by two described external packer of pipe；Described primary screen casing includes the base tube having multiple fuel feed hole on outer wall, on its outer circle wall, multiple ribs axially it is provided with along described base tube, and it is wound with wrapping wire along base tube circle to interval on multiple described ribs, it is filled with the foamed iron block in triangle between two adjacent ribs.
In prior art, in the thermal process of viscous crude, the horizontal segment of horizontal well is the longest, and the friction drag of horizontal well toe-end is the biggest, and the production fluid ultimately resulting in horizontal segment is uneven, the i.e. heel end of horizontal segment differs with toe-end producing pressure differential, having a strong impact on the oil recovery efficiency of horizontal well, for this problem, the present invention is in horizontal well, make bore hole be divided into three parts, i.e. fluid in horizontal well by two external packer of pipe to be entered around oil pick-up tube by two primary screen casings respectively；Now, the fluid entered in two primary screen casings it is transported in production casing vertical section top respectively through two grades of screen casings on oil pick-up tube end and oil pick-up tube horizontal segment, and then completes the segmentation exploitation of horizontal well.The present invention utilizes segmentation to exploit, the frictional resistance being positioned at horizontal well toe-end production fluid is reduced, it is exaggerated the producing pressure differential of toe-end, increase the frictional resistance of horizontal well heel end production fluid simultaneously, reduce the producing pressure differential of heel end, it is achieved that horizontal segment production fluid relatively evenly output, efficiently solve the problem that the horizontal segment production fluid that conventional levels well completion mode caused is uneven, toe-end not production fluid even occur, realize horizontal segment equilibrium production fluid, the development effectiveness of well of improving the standard.And the fluid in the bore hole of production casing end is by primary screen casing and the filtration of two grades of screen casings, make to enter eventually into the solid concentration of fluid in oil pick-up tube and be down to minimum, and when the later stage of recovering the oil carries out clean-out service to horizontal completion, flushing fluid is injected in production casing, by flushing fluid, oil pick-up tube, primary screen casing and two grades of screen casings are carried out, it is ensured that horizontal completion oil recovery efficiency in later stage recovery process；
During work, base tube is placed in the horizontal segment of horizontal completion, and viscous crude is entered in the gap of wrapping wire and sleeve pipe formation by wire spacing, after the filtration of foamed iron, enters into substrate tube through fuel feed hole, to realize the pumping of fluid；In prior art, steam flooding technology is used when viscous crude is exploited, i.e. it is provided above steam injection well and producing well at oil reservoir, steam is constantly passed through in steam injection well, steam is made constantly to heat the stratum around pit shaft, crude oil in stratum is also heated simultaneously, the steam zone progressively extended with constantly injecting of steam is formed in the stratum of near wellbore, steam can will drop to relatively low degree containing saturation in steam zone, and flowable crude oil (i.e. the difference of initial oil saturation and residual oil saturation) is displaced steam zone；Meanwhile, in the horizontal segment of horizontal completion, steam moves to updip direction consumingly, and under the force of gravity, the crude oil that is heated is driven onto and has a down dip reversely, and the increase of the temperature along with crude oil, the mixture such as profit in horizontal completion horizontal segment and gravel will boiling, crude oil is caused to be degraded (disturbance because of caused by the boiling of mixture), the mixture of profit and solid phase starts to be entered into substrate tube by horizontal completion horizontal segment, wrapping wire is a complete metal bar and is wound on multiple ribs by interval, form the primary filter unit to major diameter solid phases such as gravels in profit, and foam iron rule forms the secondary filter unit to minor diameter solid phase, to realize the sand control purpose of base tube；And, when being affected by the self-contained heat of fluid pressure and profit in horizontal completion horizontal segment and cause producing pressure change, the secondary filter interval formed between two adjacent ribs is compressed, but in this secondary filter interval, it is filled with multiple foamed iron block in triangle, foamed iron is after stress deforms upon, the runner that still can form multiple irregular geometric figures in secondary filter interval passes through for oil water mixture, and foamed iron inner duct stress generation minor variations and be not easy to be blocked, foamed iron has certain elasticity simultaneously, when elasticity recovery deformation, the duct in foamed iron resets, with the percolation ability in maintenance secondary filter interval, ensure the smooth exploitation of viscous crude.
Also include giving up, described in give up and be connected with packer upper end by screw thread.Give up and can directly dock with the pumping pipe string in protective casing after being connected with packer, the vertical portion of first paragraph oil pipe is insulated into upper and lower two parts by packer simultaneously, and oilhole is opened in bottom, give up and be positioned at top, make by the production fluid flow in first paragraph primary screen casing after flowing into oilhole, directly with by the product liquid-phase mixing flowed in second segment oil pipe, concentrate on give up interior after be drawn out of outside well.
Also include that multiple reinforcement, multiple described reinforcements axially and are ringwise distributed on wrapping wire along described base tube.In the horizontal segment of horizontal completion, wrapping wire is not only by the pressure of oil reservoir, and the moment change with the change of reservoir temperature of this pressure, i.e. during the abrupt change of pressure, wrapping wire is highly prone to damage, and the present invention is by arranging multiple reinforcement being distributed ringwise on wrapping wire so that the first filter element that wrapping wire is formed stably is supported, with the production pressure being continually changing in horizontal segment in reply horizontal completion, extend the service life of himself simultaneously.
Described wrapping wire outer wall scribbles TiALN-WC/C layer.As preferably, at wrapping wire outer wall, TiALN-WC/C coating is set, and the coefficient of friction of TiALN-WC/C coating only has 0.1, when the solid phases such as sand grains constantly contact with wrapping wire, can greatly reduce frictional dissipation between the two, and with self lubricity, greatly ensure wrapping wire service life in horizontal completion.
Also including union joint, the two ends of described base tube are connected with blind pipe by union joint respectively.As preferably, the needs recovered the oil according to reality, base tube is connected with blind pipe by union joint, facilitate the pumping of crude oil, and the mode that abandoning tradition blind pipe directly welds with base tube when laying, directly change wrapping wire when wrapping wire damages to facilitate and base tube, wrapping wire need not be carried out integral replacing, reduce the production cost of thickened oil recovery.
The present invention compared with prior art, has such advantages as and beneficial effect:
Present invention fluid in the bore hole of production casing end is by primary screen casing and the filtration of two grades of screen casings, make to enter eventually into the solid concentration of fluid in oil pick-up tube and be down to minimum, and when the later stage of recovering the oil carries out clean-out service to horizontal completion, flushing fluid is injected in production casing, by flushing fluid, oil pick-up tube, primary screen casing and two grades of screen casings are carried out, it is ensured that horizontal completion oil recovery efficiency in later stage recovery process.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the structural representation of primary screen casing；
Fig. 3 is the longitdinal cross-section diagram of primary screen casing.
Labelling and corresponding parts title in accompanying drawing:
1-production casing, 2-sleeve pipe, 3-external packer of pipe, 4-primary screen casing, 5-give up, 6-packer, 7-oil pick-up tube, 8-pipe interior packer, 9-bore hole, 10-protective casing, bis-grades of screen casings of 11-, A-heel end, B-toe-end, 12-reinforcement, 13-wrapping wire, 14-ribs, 15-base tube, 16-fuel feed hole, 17-union joint, 18-blind pipe, 19-foamed iron.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, not as a limitation of the invention.
Embodiment 1
As shown in Figure 1 to Figure 3, the present embodiment includes the production casing 2 of L-shaped, the horizontal segment of described production casing 2 connects two primary screen casings, sleeve pipe 2 is arranged between two primary screen casings, it is fixed with the oil pick-up tube 7 of L-shaped by packer 6 in the described vertical section of production casing 2, packer 8 in pipe is installed in sleeve pipe 2, the net horizontal section that the horizontal ends of described oil pick-up tube 7 is constituted at two described primary screen casings and sleeve pipe 2 freely extends, two grades of screen casings 11 it are provided with on the horizontal segment of oil pick-up tube 7, the primary screen casing that end is just being connected by described two grades of screen casings 11 with production casing 2 horizontal segment, two external packer of pipe 3 are installed outside sleeve pipe 2, and bore hole 9 is separated into three parts by two described external packer of pipe 3；Described primary screen casing 4 includes the base tube 15 having multiple fuel feed hole 16 on outer wall, axially on its outer circle wall, multiple ribs 14 it is provided with along described base tube 15, and it is wound with wrapping wire 13 along base tube 15 circle to interval on multiple described ribs 14, it is filled with the foamed iron 19 block in triangle between two adjacent ribs 14.
In prior art, in the thermal process of viscous crude, the horizontal segment of horizontal well is the longest, and the friction drag of horizontal well toe-end B is the biggest, and the production fluid ultimately resulting in horizontal segment is uneven, the i.e. heel end A of horizontal segment differs with toe-end B producing pressure differential, having a strong impact on the oil recovery efficiency of horizontal well, for this problem, the present invention is in horizontal well, make bore hole 9 be divided into three parts, i.e. fluid in horizontal well by two external packer of pipe 3 to be entered around oil pick-up tube 7 by two primary screen casings respectively；Now, the fluid entered in two primary screen casings it is transported in 2 vertical sections of tops of production casing respectively through two grades of screen casings 11 on oil pick-up tube 7 end and oil pick-up tube 7 horizontal segment, and then completes the segmentation exploitation of horizontal well.The present invention utilizes segmentation to exploit, the frictional resistance being positioned at horizontal well toe-end B production fluid is reduced, it is exaggerated the producing pressure differential of toe-end B, increase the frictional resistance of horizontal well heel end A production fluid simultaneously, reduce the producing pressure differential of heel end A, it is achieved that horizontal segment production fluid relatively evenly output, efficiently solve the problem that the horizontal segment production fluid that conventional levels well completion mode caused is uneven, toe-end B not production fluid even occur, realize horizontal segment equilibrium production fluid, the development effectiveness of well of improving the standard.And the fluid in the bore hole 9 of production casing 2 end is by primary screen casing and the filtration of two grades of screen casings 11, make to enter eventually into the solid concentration of fluid in oil pick-up tube 7 and be down to minimum, and when the later stage of recovering the oil carries out clean-out service to horizontal completion, flushing fluid is injected in production casing 2, by flushing fluid, oil pick-up tube 7, primary screen casing and two grades of screen casings 11 are carried out, it is ensured that horizontal completion oil recovery efficiency in later stage recovery process；
During work, base tube 15 is placed in the horizontal segment of horizontal completion, and viscous crude enters in the gap of wrapping wire 13 and sleeve pipe formation by wrapping wire 13 gap, after the filtration through foamed iron 19, enters into base tube 15 through fuel feed hole 16 internal, to realize the pumping of fluid；In prior art, steam flooding technology is used when viscous crude is exploited, i.e. it is provided above steam injection well and producing well at oil reservoir, steam is constantly passed through in steam injection well, steam is made constantly to heat the stratum around pit shaft, crude oil in stratum is also heated simultaneously, the steam zone progressively extended with constantly injecting of steam is formed in the stratum of near wellbore, steam can will drop to relatively low degree containing saturation in steam zone, and flowable crude oil (i.e. the difference of initial oil saturation and residual oil saturation) is displaced steam zone；Meanwhile, in the horizontal segment of horizontal completion, steam moves to updip direction consumingly, and under the force of gravity, the crude oil that is heated is driven onto and has a down dip reversely, and the increase of the temperature along with crude oil, the mixture such as profit in horizontal completion horizontal segment and gravel will boiling, crude oil is caused to be degraded (disturbance because of caused by the boiling of mixture), the mixture of profit and solid phase starts by entering into base tube 15 in horizontal completion horizontal segment internal, wrapping wire 13 is a complete metal bar and is wound on multiple ribs 14 by interval, form the primary filter unit to major diameter solid phases such as gravels in profit, foamed iron 19 then forms the secondary filter unit to minor diameter solid phase, to realize the sand control purpose of base tube 15；And, when being affected by the self-contained heat of fluid pressure and profit in horizontal completion horizontal segment and cause producing pressure change, the secondary filter interval formed between two adjacent ribs 14 is compressed, but in this secondary filter interval, it is filled with multiple foamed iron 19 block in triangle, foamed iron 19 is after stress deforms upon, the runner that still can form multiple irregular geometric figures in secondary filter interval passes through for oil water mixture, and foamed iron 19 inner duct stress generation minor variations and be not easy to be blocked, foamed iron 19 has certain elasticity simultaneously, when elasticity recovery deformation, the duct in foamed iron 19 resets, with the percolation ability in maintenance secondary filter interval, ensure the smooth exploitation of viscous crude.
The present embodiment also includes giving up 5, described in give up and 5 be connected with packer 6 upper end by screw thread.Give up 5 be connected with packer 6 after can directly dock with oil pick-up tube 7 post in protective casing 10, the vertical portion of first paragraph oil pipe is insulated into upper and lower two parts by packer 6 simultaneously, and oilhole is opened in bottom, give up and 5 be positioned at top, make by the production fluid flow in first paragraph primary screen casing after flowing into oilhole, directly with by the product liquid-phase mixing flowed in second segment oil pipe, concentrating on gives up after in 5 is drawn out of outside well.
The present embodiment also includes that multiple reinforcement 12, multiple described reinforcements 12 axially and are ringwise distributed on wrapping wire 13 along described base tube 15.In the horizontal segment of horizontal completion, wrapping wire 13 is not only by the pressure of oil reservoir, and the moment change with the change of reservoir temperature of this pressure, i.e. during the abrupt change of pressure, wrapping wire 13 is highly prone to damage, and the present invention is by arranging multiple reinforcement 12 being distributed ringwise on wrapping wire 13 so that the first filter element that wrapping wire 13 is formed stably is supported, with the production pressure being continually changing in horizontal segment in reply horizontal completion, extend the service life of himself simultaneously.
As preferably, at wrapping wire 13 outer wall, TiALN-WC/C coating is set, and the coefficient of friction of TiALN-WC/C coating only has 0.1, when the solid phases such as sand grains constantly contact with wrapping wire 13, can greatly reduce frictional dissipation between the two, and with self lubricity, greatly ensure the wrapping wire 13 service life in horizontal completion.
As preferably, the needs recovered the oil according to reality, base tube 15 is connected with blind pipe 18 by union joint 17, facilitate the pumping of crude oil, and the mode that abandoning tradition blind pipe 18 directly welds with base tube 15 when laying, directly change wrapping wire 13 when wrapping wire 13 damages to facilitate and base tube 15, wrapping wire 13 need not be carried out integral replacing, reduce the production cost of thickened oil recovery.
Above-described detailed description of the invention; the purpose of the present invention, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only the detailed description of the invention of the present invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (5)
- null1. the flow string of a thick oil horizontal well thermal recovery，Production casing (1) including L-shaped，It is characterized in that: the horizontal segment of described production casing (1) connects two primary screen casings (4)，Sleeve pipe (2) is arranged between two primary screen casings (4)，It is fixed with the oil pick-up tube (7) of L-shaped by packer (6) in described production casing (1) vertically section，Packer (8) in pipe is installed in sleeve pipe (2)，The net horizontal section that the horizontal ends of described oil pick-up tube (7) is constituted two described primary screen casings (4) and sleeve pipe (2) freely extends，Two grades of screen casings (11) it are provided with on the horizontal segment of oil pick-up tube (7)，The primary screen casing (4) that end is just being connected by described two grades of screen casings (11) with production casing (1) horizontal segment，Two external packer of pipe (3) are installed outside sleeve pipe (2)，And bore hole (9) is separated into three parts by two described external packer of pipe (3)；Described primary screen casing (4) includes the base tube (15) having multiple fuel feed hole (16) on outer wall, axially on its outer circle wall, multiple ribs (14) it is provided with along described base tube (15), and it is wound with wrapping wire (13) along base tube (15) circle at the upper interval of multiple described ribs (14), it is filled with the foamed iron (19) block in triangle between two adjacent ribs (14).
- The flow string of a kind of thick oil horizontal well thermal recovery the most according to claim 1, it is characterised in that: also include give up (5), described in give up (5) be connected with packer (6) upper end by screw thread.
- The flow string of a kind of thick oil horizontal well thermal recovery the most according to claim 1, it is characterised in that: also include that multiple reinforcement (12), multiple described reinforcements (12) axially and are ringwise distributed on wrapping wire (13) along described base tube (15).
- The flow string of a kind of thick oil horizontal well thermal recovery the most according to claim 1, it is characterised in that: on described wrapping wire (13) outer wall, scribble TiALN-WC/C layer.
- The flow string of a kind of thick oil horizontal well thermal recovery the most according to claim 1, it is characterised in that: also including union joint (17), the two ends of described base tube (15) are connected with blind pipe (18) by union joint (17) respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309043.7A CN105863579A (en) | 2016-05-11 | 2016-05-11 | Production tubular column adopted for thermal recovery of heavy oil in horizontal well |
| PCT/CN2016/097425 WO2017193503A1 (en) | 2016-05-11 | 2016-10-14 | Production string used for thickened oil thermal recovery in horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309043.7A CN105863579A (en) | 2016-05-11 | 2016-05-11 | Production tubular column adopted for thermal recovery of heavy oil in horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105863579A true CN105863579A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610309043.7A Pending CN105863579A (en) | 2016-05-11 | 2016-05-11 | Production tubular column adopted for thermal recovery of heavy oil in horizontal well |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105863579A (en) |
| WO (1) | WO2017193503A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017193503A1 (en) * | 2016-05-11 | 2017-11-16 | 四川行之智汇知识产权运营有限公司 | Production string used for thickened oil thermal recovery in horizontal well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622749A (en) * | 2020-04-14 | 2020-09-04 | 中国石油化工股份有限公司 | Water exploration pipe column and water exploration method for thick oil thermal recovery screen pipe well completion horizontal well |
| CN114790878B (en) * | 2021-01-26 | 2023-08-22 | 中国石油天然气股份有限公司 | Underground electric preheating method and system for steam-assisted gravity drainage of fractured reservoir |
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2016
- 2016-05-11 CN CN201610309043.7A patent/CN105863579A/en active Pending
- 2016-10-14 WO PCT/CN2016/097425 patent/WO2017193503A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017193503A1 (en) * | 2016-05-11 | 2017-11-16 | 四川行之智汇知识产权运营有限公司 | Production string used for thickened oil thermal recovery in horizontal well |
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| Publication number | Publication date |
|---|---|
| WO2017193503A1 (en) | 2017-11-16 |
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Application publication date: 20160817 |