CN202325428U - Driving-drainage composite oil production system - Google Patents
Driving-drainage composite oil production system Download PDFInfo
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- CN202325428U CN202325428U CN2011204729578U CN201120472957U CN202325428U CN 202325428 U CN202325428 U CN 202325428U CN 2011204729578 U CN2011204729578 U CN 2011204729578U CN 201120472957 U CN201120472957 U CN 201120472957U CN 202325428 U CN202325428 U CN 202325428U
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Abstract
The utility model discloses a driving-drainage composite oil production system, which comprises a horizontal production well, a steam injection vertical well and a production vertical well, wherein the horizontal production well is arranged at the bottom of an oil layer; the oil layer is provided with an interlayer; a lifting pipe column is arranged in the horizontal production well; the steam injection vertical well is arranged in the oil layer and penetrates through the interlayer; parts of the steam injection vertical well, which are positioned above the interlayer and below the interlayer, are respectively communicated with the oil layer; a steam injection pipe column is arranged in the steam injection vertical well; the production vertical well is adjacent to the steam injection vertical well; the part of the production vertical well, which is positioned above the interlayer, is communicated with the oil layer; and the lifting pipe column is arranged in the production vertical well. By adoption of the driving-drainage composite oil production system, an extra-super heavy oil reservoir in a medium-thick-layer extra-super heavy oil reservoir with the developed interlayer can be effectively used, a steam injection range is expanded, and the yield of an oil well and oil-steam ratio are improved.
Description
Technical field
The utility model is relevant for the special super-heavy oil deposit exploitation of a kind of medium bed field, relates in particular to a kind ofly to exist driving of in the special super-heavy oil deposit exploitation of the medium bed of interlayer, using to let out compound oil extraction system.
Background technology
At present, SAGD steam driving exploitation technology has become a kind of fashionable technology of the ultra viscous crude of international exploitation, and it mainly is through heating oil reservoir to underground continuous steam in jection, crude oil is driven on every side in the producing well extraction then.
In oil recovery field, oil field, the oil extraction system that conventional SAGD SAGD adopts mainly contains two kinds: a kind of is two horizontal well structures, promptly in the stratum, arranges two mouthfuls of water horizontal wells near the oil reservoir bottom, and the upper water horizontal well is annotated vapour, and the lower horizontal well recovers the oil; Another kind is to carry out oil extraction through the hole pattern that straight well and horizontal well make up, and the top straight well is annotated vapour, and the lower horizontal well recovers the oil.
The oil extraction system of two kinds of cloth well constructions that above-mentioned oilfield exploitation is used for the high viscosity oil that under the initial condition of stratum, does not have fluid ability, realized the thermal communication between the injection-production well; All need experience the oil reservoir warm-up phase; After making oil reservoir form thermal communication, the steam of the injection onlap that makes progress forms vapor chamber on the stratum, and vapor chamber upwards and sideways expansion; With the crude oil generation interchange of heat in the oil reservoir, the crude oil of heating and steam condensate (SC) are let out in the following horizontal production well and output by action of gravity.
But, concerning the special super-heavy oil deposit of medium bed, in the stratum, forms at a distance from interlayer through regular meeting, be a kind of impervious bed that stops or control fluid motion at a distance from interlayer, its varied in thickness is bigger, little then tens centimetres to several meters thick, greatly then tens meters thick.In the SAGD recovery process; As if be positioned at the perforated interval top of annotating the vapour well just at a distance from interlayer, when steam was annotated the perforated interval injection oil reservoir of vapour well certainly, the steam of injection can be owing to can't fully spread at a distance from stopping of interlayer; Make and effectively to employ at a distance from the crude oil reserve on interlayer top; Influence the scope that involves of steam in jection, thereby have a strong impact on oil well output and gas oil ratio, the oil recovering effect is undesirable.
Therefore, be necessary to provide a kind of novel oil extraction system, overcome above-mentioned defective.
The utility model content
The purpose of the utility model provides a kind of driving and lets out compound oil extraction system, and this oil extraction system can effectively be employed special super-heavy oil deposit in the special super-heavy oil deposit of the medium bed of growing at a distance from interlayer, increase steam in jection and involve scope, improves oil well output and gas oil ratio.
The above-mentioned purpose of the utility model can adopt following technical proposal to realize:
The utility model provides a kind of driving to let out compound oil extraction system, and said driving let out compound oil extraction system and comprised:
Horizontal production well, it is arranged on the oil reservoir bottom, has separated interlayer in the said oil reservoir, is provided with the lifting tubing string in the said horizontal production well;
Annotate the vapour straight well, its be arranged in the said oil reservoir and pass said at a distance from interlayer, said notes vapour straight well be positioned at said at a distance from above the interlayer with below the position be communicated with said oil reservoir respectively, be provided with steam injection string in the said notes vapour straight well;
Produce straight well, it is provided with near said notes vapour straight well, and said production straight well is communicated with said oil reservoir in the position that is positioned at above the said separated interlayer, is provided with the lifting tubing string in the said production straight well.
In preferred embodiment, the net horizontal section of said horizontal production well is positioned at the oblique below of said notes vapour straight well.
In preferred embodiment, said notes vapour straight well is 70m apart from the horizontal range of said horizontal production well, and vertically distance is 5m.
In preferred embodiment, said notes vapour straight well is between said production straight well and said horizontal production well.
In preferred embodiment, said notes vapour straight well is 70m apart from the horizontal range of said production straight well.
In preferred embodiment; Said steam injection string is located in the thermal sleeve in the said notes vapour straight well, and it has the vapour of notes passage, is formed with annular between said steam injection string and the said thermal sleeve and annotates the vapour passage; Said steam injection string comprises oil pipe; Said oil pipe is provided with telescoping tube and packer, and said telescoping tube telescopically is connected on the said oil pipe, and said packer sealing is arranged on said said annular between the oil reservoir of interlayer top and below and annotates in the vapour passage.
In preferred embodiment; Said lifting tubing string comprises oil pipe, oil well pump and sucker rod; The below of said oil pipe is connected with said oil well pump; Said sucker rod is located in the said oil pipe, and its below links to each other with said oil well pump, and the below of said oil well pump is connected with punching screen casing and starting taper plug in turn.
In preferred embodiment, said oil well pump is a tubing pump, and it comprises pump barrel and the piston that is arranged in the pump barrel, and said pump barrel is connected the below of said oil pipe, and the upper end of said piston links to each other with said sucker rod.
The drive characteristics and the advantage of letting out compound oil extraction system of the utility model are: this drives lets out compound oil extraction system; With annotating the separated interlayer that the vapour straight well passes oil reservoir; Notes vapour straight well is connected with the oil reservoir of separated interlayer above and below respectively; Utilize steam injection string in it respectively to annotating vapour with the oil reservoir of below, and utilize horizontal production well and produce the straight well production of pumping at a distance from the interlayer top.Because horizontal production well is positioned at the bottom of oil reservoir; It can be used for extraction and is positioned at a distance from the interlayer above and below behind steam flooding; The viscous crude that under action of gravity, flows to oil reservoir bottom, produce straight well be used to extract be positioned at a distance from the interlayer top behind steam flooding to producing the viscous crude that the straight well direction flows.The heavy crude reservoir that compound oil extraction system can fully be employed separated interlayer top is let out in driving of the utility model, increases steam in jection and involves scope, improves oil well output and gas oil ratio, improves oil recovery efficiency.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of letting out compound oil extraction system that drives of the utility model.
The structural representation of the steam injection string that the notes vapour straight well that Fig. 2 lets out compound oil extraction system for driving of the utility model is interior.
The interior lifting tubing string sketch map of production straight well that Fig. 3 lets out compound oil extraction system for driving of the utility model.
The interior lifting tubing string sketch map of horizontal production well that Fig. 4 lets out compound oil extraction system for driving of the utility model.
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of driving to let out compound oil extraction system, and it comprises horizontal production well 1, annotates vapour straight well 2 and produces straight well 3.Wherein, horizontal production well 1 is arranged on oil reservoir 4 bottoms, has separated interlayer 41 in the said oil reservoir 4, is provided with lifting tubing string 11 in the said horizontal production well 1; Annotate vapour straight well 2 be arranged in the said oil reservoir 4 and pass said at a distance from interlayer 41, said notes vapour straight well 2 be positioned at said at a distance from above the interlayer 41 with below the position be communicated with said oil reservoir 4 respectively, be provided with steam injection string 21 in the said notes vapour straight well 2; Produce straight well 3 and be provided with near said notes vapour straight well 2, said production straight well 3 is communicated with said oil reservoir 4 being positioned at said position above interlayer 41, is provided with lifting tubing string 11 in the said production straight well 3.
Specifically be; Annotate separated interlayer 41 places that vapour straight well 2 is drilled with in oil reservoir 4; And drill at a distance from interlayer 41, according to an embodiment of the utility model, annotate vapour straight well 2 and can be drilled with at marginal position place at a distance from interlayer 41; Can be convenient to like this reduce the crude oil flow distance from annotating steam that vapour straight well 2 injects to oil reservoir 4 with heating crude oil and be driven to and be positioned at the horizontal production well 1 that oil reservoir 4 bottoms of annotating vapour straight well 2 one sides are drilled with.In addition, in oil reservoir 4, also be drilled with and produce straight well 3, produce straight well 3 and parallel with notes vapour straight well 2.In the utility model, big or small according to the area at a distance from interlayer 41 in the oil reservoir 4, in oil reservoir 4, can be drilled with a plurality of notes vapour straight wells 2; Annotate distance certain at interval between the vapour straight well 2 in twos, be arranged into the side that row are arranged on the net horizontal section of horizontal production well 1, for example; In the present embodiment, annotate between the vapour straight well 2 70m at interval in twos, certainly; In other embodiment, annotate the distance of 2 of vapour straight wells in twos and also can adjust according to the actual job needs, do not limit at this; In addition, in the utility model, in oil reservoir 4, also can be provided with a plurality of production straight wells 3, its quantity is mainly confirmed according to the quantity of annotating vapour straight well 2, is not limited at this.
Compound oil extraction system is let out in driving of the utility model, in oil recovery process, at first; Annotating the oil reservoir position perforation that vapour straight well 2 is positioned at separated interlayer 41 above and belows; Notes vapour straight well 2 is connected with the oil reservoir of separated interlayer 41 above and belows, is lowered to steam injection string 21 afterwards, annotate vapour to oil reservoir at a distance from interlayer 41 above and belows through steam injection string 21; Fluid ability strengthens after crude oil in the oil reservoir 4 and the steam generation interchange of heat; Crude oil after the heating makes a concerted effort to drive down in that steam flooding power and gravity are coefficient, to horizontal production well 1 with produce straight well 3 and flow, afterwards through the lifting tubing string 11 in horizontal production well 1, the production straight well 3 with the crude oil extraction.
Compound oil extraction system is let out in driving of the utility model; Be applied in the special super-heavy oil deposit of the medium bed that interlayer is grown; Because horizontal production well 1 is positioned at the bottom of oil reservoir 4; It is mainly used in to extract and is positioned at separated interlayer 41 above and belows behind steam flooding, and the crude oil that under action of gravity, flows to oil reservoir 4 bottoms, production straight well 3 are mainly used in and extract the crude oil that behind steam flooding, flows to production straight well 3 directions that is positioned at a distance from interlayer 41 tops.The heavy crude reservoir that compound oil extraction system can fully be employed separated interlayer 41 tops is let out in driving of the utility model, increases steam in jection and involves scope, improves oil well output and gas oil ratio, improves oil recovery efficiency.
According to an embodiment of the utility model, the net horizontal section of said horizontal production well 1 is positioned at the oblique below of said notes vapour straight well 2.The benefit that is provided with like this is, constantly in oil reservoir 4, annotates vapour owing to annotate vapour straight well 2, and the steam of the injection onlap that makes progress forms vapor chamber at oil reservoir 4; Vapor chamber upwards reaches sideways expansion; Under the force action of gravity and steam flooding, the crude oil after the heating flows to the oblique below of the net horizontal section of horizontal production well 1, therefore can be driven in the horizontal production well 1 crude oil and extraction to greatest extent; Thereby can effectively improve the recovery ratio of crude oil, improve rate of oil production.
Specifically be, in the utility model, said notes vapour straight well 2 is 70m apart from the horizontal range L of said horizontal production well 1, and vertically distance H is 5m.Certainly, in other embodiment, horizontal range L and the vertical distance H annotated between vapour straight well 2 and the horizontal production well 1 also can be according to the steam injection rates, and parameters such as steam quality are confirmed, do not limited at this.
According to an embodiment of the utility model, said notes vapour straight well 2 is between said production straight well 3 and said horizontal production well 1.The benefit of setting is like this, owing to annotate vapour straight well 2 behind notes vapour, vapor chamber can be to the expansion on every side of annotating vapour straight well 2, and horizontal production well 1 is surrounded notes vapour straight well 2 with production straight well 3 from both sides, and then can extract crude oil to greatest extent, improves oil recovery factor.
Specifically be that in the utility model, said notes vapour straight well 2 is 70m apart from the horizontal range L ' of said production straight well 3.Certainly, in other embodiment, the horizontal range L ' that annotates between vapour straight well 2 and the production straight well 3 also can be according to the steam injection rate, and parameters such as steam quality are confirmed, do not limited at this.
An embodiment according to the utility model; As shown in Figure 2; Said steam injection string 21 is located in the thermal sleeve 22 in the said notes vapour straight well 2, and it has the vapour of notes passage 211, is formed with annular between said steam injection string 21 and the said thermal sleeve 22 and annotates vapour passage 23; Said steam injection string 21 comprises oil pipe 213; Said oil pipe 213 is provided with telescoping tube 212 and packer 214, and said telescoping tube 212 telescopicallies are connected on the said oil pipe 213, and said packer 214 sealings are arranged on said in the said annular notes vapour passage 23 between the oil reservoir of interlayer 41 tops and below.
In the process of steam injection in annotating vapour straight well 2; The annular of part steam between steam injection string 21 and thermal sleeve 22 annotated vapour passage 23 and injected the oil reservoir 42 that is positioned at a distance from interlayer 41 tops, and another part steam injects the oil reservoir 43 that is positioned at a distance from interlayer 41 belows from the notes vapour passage 211 of steam injection string 21.Sealing is provided with packer 214 in the vapour passage 23 because of the annular between oil reservoir 42 and oil reservoir 43 is annotated, and therefore annotates the steam that vapour passage 23 injects in the oil reservoir 42 from annular, because of not stopping of packer 214 can flow in the oil reservoir 43.In addition; Telescoping tube 212 is connected the upper end of oil pipe 213; It is connected to the well head of annotating vapour straight well 2 through one section oil pipe, produces thermal stress deformation because of the vapours of injecting can make steam injection string 21, and telescoping tube 212 can carry out the axial stretching motion; So that the thermal compensation of steam injection string 21 to be provided, make the thermal stress of steam injection string 21 obtain discharging.The utility model adopts the steam injection string 21 of said structure, can effectively control the notes vapour amount of injecting in oil reservoir 42 and the oil reservoir 43.
An embodiment according to the utility model; As shown in Figure 3, for being arranged on the sketch map of producing the lifting tubing string 11 in the straight well 3, said lifting tubing string 11 comprises oil pipe 111, oil well pump 112 and sucker rod 113; The below of said oil pipe 111 is connected with said oil well pump 112; Said sucker rod 113 is located in the said oil pipe 111, and its below links to each other with said oil well pump 112, and the below of said oil well pump 112 is connected with punching screen casing 114 and starting taper plug 115 in turn.Specifically be, in the utility model, oil well pump 112 is a tubing pump, and it comprises pump barrel and the piston that is arranged in the pump barrel, and the pump barrel of oil well pump 112 directly is connected the below of oil pipe 111, and sucker rod 113 links to each other with the piston of oil well pump 112.The utility model can be with being driven to the crude oil extraction of producing in the straight well 3 through this lifting tubing string 11.
In addition; As shown in Figure 4, be arranged on lifting tubing string 11 in the horizontal production well 1 with to be arranged on lifting tubing string 11 structures of producing in the straight well 3 identical, repeat no more at this; Utilization is arranged on lift tube post 11 in the horizontal production well 1, can be with the crude oil extraction that flows in the horizontal production well 1.
The above is merely several embodiment of the utility model, and those skilled in the art can carry out various changes or modification to the utility model embodiment according to the disclosed content of application documents and not break away from the spirit and the scope of the utility model.
Claims (8)
1. one kind is driven and lets out compound oil extraction system, it is characterized in that, said driving let out compound oil extraction system and comprised:
Horizontal production well, it is arranged on the oil reservoir bottom, has separated interlayer in the said oil reservoir, is provided with the lifting tubing string in the said horizontal production well;
Annotate the vapour straight well, its be arranged in the said oil reservoir and pass said at a distance from interlayer, said notes vapour straight well be positioned at said at a distance from above the interlayer with below the position be communicated with said oil reservoir respectively, be provided with steam injection string in the said notes vapour straight well;
Produce straight well, it is provided with near said notes vapour straight well, and said production straight well is communicated with said oil reservoir in the position that is positioned at above the said separated interlayer, is provided with the lifting tubing string in the said production straight well.
2. as claimed in claim 1 driving let out compound oil extraction system, it is characterized in that, the net horizontal section of said horizontal production well is positioned at the oblique below of said notes vapour straight well.
3. as claimed in claim 2 driving let out compound oil extraction system, it is characterized in that, said notes vapour straight well is 70m apart from the horizontal range of said horizontal production well, and vertically distance is 5m.
4. as claimed in claim 1 driving let out compound oil extraction system, it is characterized in that, said notes vapour straight well is between said production straight well and said horizontal production well.
5. as claimed in claim 4 driving let out compound oil extraction system, it is characterized in that, said notes vapour straight well is 70m apart from the horizontal range of said production straight well.
6. as claimed in claim 1 driving let out compound oil extraction system; It is characterized in that; Said steam injection string is located in the thermal sleeve in the said notes vapour straight well, and it has the vapour of notes passage, is formed with annular between said steam injection string and the said thermal sleeve and annotates the vapour passage; Said steam injection string comprises oil pipe; Said oil pipe is provided with telescoping tube and packer, and said telescoping tube telescopically is connected on the said oil pipe, and said packer sealing is arranged on said said annular between the oil reservoir of interlayer top and below and annotates in the vapour passage.
7. as claimed in claim 1 driving let out compound oil extraction system; It is characterized in that; Said lifting tubing string comprises oil pipe, oil well pump and sucker rod, and the below of said oil pipe is connected with said oil well pump, and said sucker rod is located in the said oil pipe; Its below links to each other with said oil well pump, and the below of said oil well pump is connected with punching screen casing and starting taper plug in turn.
8. as claimed in claim 7 driving let out compound oil extraction system, it is characterized in that, said oil well pump is a tubing pump, and it comprises pump barrel and the piston that is arranged in the pump barrel, and said pump barrel is connected the below of said oil pipe, and the upper end of said piston links to each other with said sucker rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204729578U CN202325428U (en) | 2011-11-24 | 2011-11-24 | Driving-drainage composite oil production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204729578U CN202325428U (en) | 2011-11-24 | 2011-11-24 | Driving-drainage composite oil production system |
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| CN202325428U true CN202325428U (en) | 2012-07-11 |
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| CN2011204729578U Expired - Fee Related CN202325428U (en) | 2011-11-24 | 2011-11-24 | Driving-drainage composite oil production system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103174403A (en) * | 2013-03-08 | 2013-06-26 | 中国石油天然气股份有限公司 | Gravity and steam flooding combined mining method of thick layer containing interlayer common heavy oil reservoir |
| CN104632164A (en) * | 2015-01-29 | 2015-05-20 | 中国石油天然气股份有限公司 | Method for breaking through interlayer in oil layer during double-horizontal-well SAGD exploiting |
| CN105649588A (en) * | 2014-11-12 | 2016-06-08 | 中国石油天然气股份有限公司 | Method for exploiting heavy oil reservoir through steam-assisted gravity drainage (SAGD) |
| CN105672977A (en) * | 2014-11-21 | 2016-06-15 | 中国石油天然气股份有限公司 | Horizontal well system and exploitation method for oil drainage of horizontal well |
| CN106351630A (en) * | 2015-07-17 | 2017-01-25 | 中国石油天然气股份有限公司 | Method for composite mining with rotary drive and vent |
| CN106368666A (en) * | 2015-07-20 | 2017-02-01 | 中国石油天然气股份有限公司 | Vertical well-horizontal well pattern applied to thick oil and exploitation method for thick oil |
| CN106468163A (en) * | 2015-08-21 | 2017-03-01 | 中国石油天然气股份有限公司 | Straight well for steam drive oil production and the recovery method of viscous crude |
| CN107013197A (en) * | 2017-05-19 | 2017-08-04 | 中国石油集团川庆钻探工程有限公司 | The dual horizontal well of viscous crude containing interlayer SAGD develops drilling completion method |
| CN107975357A (en) * | 2017-10-13 | 2018-05-01 | 中国石油天然气股份有限公司 | The well pattern structure and oil production method of super-heavy oil deposit |
| CN112392470A (en) * | 2019-08-12 | 2021-02-23 | 中国石油天然气股份有限公司 | Oil reservoir vertical gas injection physical simulation device |
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2011
- 2011-11-24 CN CN2011204729578U patent/CN202325428U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103174403B (en) * | 2013-03-08 | 2016-08-10 | 中国石油天然气股份有限公司 | Thick-layer drives unitized production method containing the gravity every interlayer common heavy oil reservoir with steam |
| CN103174403A (en) * | 2013-03-08 | 2013-06-26 | 中国石油天然气股份有限公司 | Gravity and steam flooding combined mining method of thick layer containing interlayer common heavy oil reservoir |
| CN105649588B (en) * | 2014-11-12 | 2018-08-14 | 中国石油天然气股份有限公司 | Utilize the method for SAGD production of heavy oil reservoir |
| CN105649588A (en) * | 2014-11-12 | 2016-06-08 | 中国石油天然气股份有限公司 | Method for exploiting heavy oil reservoir through steam-assisted gravity drainage (SAGD) |
| CN105672977A (en) * | 2014-11-21 | 2016-06-15 | 中国石油天然气股份有限公司 | Horizontal well system and exploitation method for oil drainage of horizontal well |
| CN105672977B (en) * | 2014-11-21 | 2019-06-11 | 中国石油天然气股份有限公司 | A kind of recovery method of horizontal well system and horizontal well draining |
| CN104632164A (en) * | 2015-01-29 | 2015-05-20 | 中国石油天然气股份有限公司 | Method for breaking through interlayer in oil layer during double-horizontal-well SAGD exploiting |
| CN106351630A (en) * | 2015-07-17 | 2017-01-25 | 中国石油天然气股份有限公司 | Method for composite mining with rotary drive and vent |
| CN106368666A (en) * | 2015-07-20 | 2017-02-01 | 中国石油天然气股份有限公司 | Vertical well-horizontal well pattern applied to thick oil and exploitation method for thick oil |
| CN106468163A (en) * | 2015-08-21 | 2017-03-01 | 中国石油天然气股份有限公司 | Straight well for steam drive oil production and the recovery method of viscous crude |
| CN107013197A (en) * | 2017-05-19 | 2017-08-04 | 中国石油集团川庆钻探工程有限公司 | The dual horizontal well of viscous crude containing interlayer SAGD develops drilling completion method |
| CN107975357A (en) * | 2017-10-13 | 2018-05-01 | 中国石油天然气股份有限公司 | The well pattern structure and oil production method of super-heavy oil deposit |
| CN107975357B (en) * | 2017-10-13 | 2019-11-08 | 中国石油天然气股份有限公司 | The well pattern structure and oil production method of super-heavy oil deposit |
| CN112392470A (en) * | 2019-08-12 | 2021-02-23 | 中国石油天然气股份有限公司 | Oil reservoir vertical gas injection physical simulation device |
| CN112392470B (en) * | 2019-08-12 | 2024-04-30 | 中国石油天然气股份有限公司 | Oil reservoir vertical gas injection physical simulation device |
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Granted publication date: 20120711 Termination date: 20201124 |