CN102913206B - Method for building bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs - Google Patents
Method for building bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs Download PDFInfo
- Publication number
- CN102913206B CN102913206B CN201210430286.8A CN201210430286A CN102913206B CN 102913206 B CN102913206 B CN 102913206B CN 201210430286 A CN201210430286 A CN 201210430286A CN 102913206 B CN102913206 B CN 102913206B
- Authority
- CN
- China
- Prior art keywords
- gas
- gas reservoir
- well
- reservoir
- developed
- 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.)
- Expired - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a method for building a bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs, and the method is characterized by comprising the following steps of selecting a gas reservoir to be developed; building a construction well; forming an uncased hole between the selected gas reservoir to be developed and a production gas reservoir of a developed gas field; loading a bushing into the uncased hole on two gas reservoir well sections; utilizing cement for well cementing of an annular well section between the uncased hole and the loaded bushing; forming a perforation hole on the reservoir well section of the bushing well section by utilizing a perforation gun; fracturing a reservoir section in the two gas reservoir storage layer well sections after the perforation of the bushing well section to form a fracturing crack; and setting a bridge plug above or in front of the two gas reservoir well sections to seal, so that the migration passage is formed. By adopting the development method, the migration passage is conveniently built between the reservoir sands of the production gas reservoir of the developed gas field and the selected gas reservoir to be developed, and economy and efficiency in development of the selected gas reservoir to be developed inside or surrounding the developed offshore gas field can be realized.
Description
Technical field
The present invention relates to a kind of method of the construction of natural gas fields, specifically a kind of method of setting up the artificial migration pathway of well-case perforating pressure break formula between gas reservoir.
Background technology
THE WESTERN SOUTH CHINA SEA marine site developed gas field inner or around, have a lot of small-scale gas reservoirs, Abnormal High Pressure Gas Reservoirs, low permeability gas reservoir and high containing CO
2gas reservoir not yet drops into exploitation, and its overall reserves are on a grand scale.Due in the selected above-mentioned four kinds of gas reservoirs to be developed of the present invention, gas reservoir development is can gas production few and marine brill completion investment is relatively high on a small scale; The many well-diggings of the low need of Abnormal High Pressure Gas Reservoirs exploitation safety requirements grade high and low infiltration gas reservoir development production capacity and to reservoir transform, high containing CO
2high and the pure hydrocarbon of gas reservoir development requirement for anticorrosion yields poorly, and marine to bore completion investment higher; If increase further increase investment of underwater well head at existing offshore production platform external hanging drilling slot or at existing marine subsea production system; And newly-built offshore production platform or subsea production system construction investment are higher, thereby cause above-mentioned four kinds of marine gas reservoir development deficiencies in economic performance or be difficult to economic development.
At present for the selected small-scale gas reservoir to be developed in sea or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2the development approach of gas reservoir is identical with Determing The Length gas field, all adopts conventional offshore production platform exploitation or subsea production system exploitation.Mainly that at sea production platform or subsea production system bore development well and directly open selected small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2gas reservoir, selected small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2gas reservoir natural gas is small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or the low permeability gas reservoir or high containing CO from selecting under the effect of expansion energy
2gas reservoir flows to the producing pattern boring, and by the directly extraction of flow string quilt of each producing well.In addition, if will, to producing gas reservoir makeup energy, also need to bore special Injection Well.
For the selected small-scale gas reservoir to be developed in sea or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2gas reservoir, there is following shortcoming in existing gas reservoir development method:
1) newly-built production platform or subsea production system drilling well exploitation, be built into and put into production from new production platform or subsea production system, cycle is long, investment is large, is difficult to realize sea has been developed to small-scale gas reservoir to be developed selected in gas field or around it or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2the economical and effective exploitation of gas reservoir also will cause existing well pattern and the existing production facility of developing gas field production platform or subsea production system to utilize simultaneously.
2) develop gas field production platform without residue well slot or subsea production system without residue underwater well head, also cannot adding and hanging well slots or increase underwater well head, or directly develop the situation that cannot realize because of the reason such as economy, technology selected small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO from built production platform or subsea production system drilling well
2the reserves of gas reservoir cannot be employed, and the valuable natural gas resource of country will be wasted.
3) whether developed gas field production platform or subsea production system can be used for developing in it or its small-scale gas reservoir to be developed of selecting or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO around
2gas reservoir, is subject to the drillng operation capabilities limits of relative position and the offshore boring island of the former with the latter.
4) Abnormal High Pressure Gas Reservoirs exploitation and high containing CO
2pressure security class requirement and the requirement for anticorrosion of gas reservoir development to relevant materials is all very high, causes and bores completion and significantly increase of production facility investment, has a strong impact on economic benefit.
Summary of the invention
In order to overcome above-mentioned deficiency, the object of the invention is to provide a kind of set up well-case perforating pressure break formula artificial natural gas migration pathway between convenience and high-efficiency, widely used gas reservoir method.
To achieve these goals, the technical solution used in the present invention is as follows:
The method of setting up well-case perforating pressure break formula artificial natural gas migration pathway between gas reservoir, is characterized in that, comprises the following steps:
A, at sea developed in gas field development early stage, be permeability ﹥ 10mD and the more stable production gas reservoir that distributes from selecting in gas field sandstone reservoir physical property to belong to middle and high infiltration, simultaneously in conjunction with the sandstone reservoir spatial distribution scope of this production gas reservoir and the drilling duty of drill ship, developing the small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or the high CO of containing that select to be applicable to the present invention's exploitation in gas field or it around
2gas reservoir.
B, set up construction well: according to selected gas reservoir to be developed with the spatial relationship of having developed gas field and producing gas reservoir, at the appropriate location on sea drill ship in place, to ocean floor drilling, form the well of constructing;
C, in construction well, carry out drilling well, make the gas reservoir to be developed of selecting and developed gas field and produced between gas reservoir and form bore hole;
D, in bore hole, two gas reservoir well sections are lowered to sleeve pipe;
E, cement the well in bore hole and the annular section cement that is lowered between sleeve pipe;
F, the reservoir well section of two gas reservoirs in the cased well section after well cementation is formed to preforation tunnel with perforating gun perforation;
G, cased well section after perforation form fracturing fracture by preforation tunnel to needing the Reservoir Section of pressure break to carry out pressure break in two Gas Reservoir well sections;
After H, pressure break on two gas reservoir well sections or before beat bridging plug and carry out packing, between two gas reservoirs, set up the artificial migration pathway of well-case perforating pressure break formula.
Repeating step C, D, E, F, G and H set up the artificial migration pathway of multiple well-case perforating pressure break formulas in construction well.
After described step G completes, the working solution in two gas reservoir well sections can be discharged.
Beneficial effect of the present invention: the applications expanding of the inventive method sea developed in gas field or its around small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2the development approach of gas reservoir, because greatly having reduced development cost, can make marine small-scale gas reservoir or Abnormal High Pressure Gas Reservoirs or the low permeability gas reservoir or high containing CO that in the past can not employ because of the reason such as economy, technology in gas field or around it developed
2gas reservoir is achieved successfully effective exploitation, also makes the valuable natural gas resource of country be fully utilized simultaneously, and can improve the marine economic benefit of having developed gas field simultaneously.Its beneficial effect is embodied in following several respects:
1) can not be subject to develop the restriction of gas field production platform or subsea production system position, by suitable ground location drill ship in place and drilling well, developing gas field production Gas Reservoir sand body and the small-scale gas reservoir to be developed of selecting or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO at sea
2between gas reservoir, set up well-case perforating pressure break formula artificial natural gas migration pathway, both can be and produced gas reservoir makeup energy, and saved to increase and bore that the required investment of facility and operation cost are injected in Injection Well and corresponding ground thereof, gas reservoir economic recovery is produced in raising, and can realize again sea has been developed in gas field or its around small-scale gas reservoir to be developed or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2the economical and effective exploitation of gas reservoir.
2) need not be from production platform or subsea production system drilling well, can reduce drill ship in place with drillng operation difficulty and risk, reduce drilling cost simultaneously.
3) can make full use of the existing well pattern of having developed gas field production platform or subsea production system and producing gas reservoir, the above well section of well-case perforating pressure break formula formula artificial natural gas migration pathway bridging plug need not completion, can reduce completion period, reduction Completion cost.
4) make full use of the existing production facility of developing gas field production platform or subsea production system, can save development investment.
5) adopt well-case perforating pressure break formula formula artificial natural gas migration pathway, can realize and rely on sea to develop gas field production platform or the marine gas reservoir on a small scale of subsea production system exploitation or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2gas reservoir, neither needs production platform residue well slot and adding and hanging well slots, does not also need subsea production system residue underwater well head or increase underwater well head, does not more need newly-built production platform or subsea production system, can reduce greatly development investment and increase economic efficiency.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the structural representation that the present invention develops;
Fig. 2 is the schematic diagram of the well-case perforating pressure break formula artificial natural gas migration pathway shown in Fig. 1.
In figure: 1, selected gas reservoir to be developed; 2, well-case perforating pressure break formula artificial natural gas migration pathway; 3, bridging plug; 4, develop gas field and produced gas reservoir; 5, construction well; 6, Multilateral Wells; 7, producing well; 8, production platform; 9, drill ship; 10, sea; 11, bore hole; 12, sleeve pipe; 13, cement; 14, eyelet; 15, fracturing fracture.
Detailed description of the invention
As shown in Figure 1, between gas reservoir, set up the method for well-case perforating pressure break formula artificial natural gas migration pathway, comprise the following steps:
1) at sea developed in gas field development early stage, be permeability ﹥ 10mD and the more stable production gas reservoir 4 that distributes from selecting in gas field sandstone reservoir physical property to belong to middle and high infiltration, in conjunction with the sandstone reservoir spatial distribution scope of this production gas reservoir 4 and the drilling duty of drill ship 9, at the gas reservoir to be developed 1 of developing the applicable the present invention's exploitation of selection in gas field or around it, gas reservoir or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or height contain CO on a small scale simultaneously
2gas reservoir;
2) according to above-mentioned selected gas reservoir to be developed 1, gas reservoir or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or height contain CO on a small scale
2gas reservoir and the spatial relationship of developing gas field production gas reservoir 4, suitable ground location drill ship 9 in place at sea, forms construction well 5;
3) as shown in Figure 2, utilize construction well 5, at i.e. small-scale gas reservoir or Abnormal High Pressure Gas Reservoirs or the low permeability gas reservoir or high containing CO of selected gas reservoir to be developed 1
2gas reservoir and developed gas field and produced between the sandstone reservoir of gas reservoir 4 and bore bore hole 11, then in bore hole 11, two gas reservoir well sections are lowered to sleeve pipe 12, then cement the well in bore hole 11 and the annular section cement 13 that is lowered between sleeve pipe 12; Finally the reservoir well section of two gas reservoirs in the cased well section after well cementation is formed to preforation tunnel 14 with perforating gun perforation, the cased well section after perforation forms fracturing fracture 15 by preforation tunnel 14 to needing the Reservoir Section of pressure break to carry out pressure break in two Gas Reservoir well sections;
4) working solution in two gas reservoir well sections can be discharged if desired;
5) after pressure break on two gas reservoir well sections or before beat bridging plug 3 and carry out packing, between two gas reservoirs, set up the artificial migration pathway 2 of well-case perforating pressure break formula.
6) if desired in the non-wiping situation of drill ship, in construction well 5, can set up multiple Multilateral Wells 6, utilize multiple Multilateral Wells 6 to bore multiple bore holes 11, multiple bore holes 11 are produced gas reservoir 4 or communicate with same selected gas reservoir to be developed 1 different parts around it or communicate with other multiple selected gas reservoirs to be developed 1 around it developing gas field; Then in each bore hole 11, two gas reservoir well sections are lowered to sleeve pipe 12, cement the well in each bore hole 11 and the annular section cement 13 that is lowered between sleeve pipe 12; Then the reservoir well section of two gas reservoirs in the cased well section after each well cementation is formed to preforation tunnel 14 with perforating gun perforation, cased well section after perforation forms fracturing fracture 15 by preforation tunnel 14 to needing the Reservoir Section of pressure break to carry out pressure break in two Gas Reservoir well sections, the working solution in each two gas reservoir well sections can be discharged if desired; Finally on each two gas reservoir well sections or before beat bridging plug 3 and carry out packing, between sandstone reservoir and the each selected gas reservoir to be developed 1 of developing gas field and produce gas reservoir 4, build up multiple well-case perforating pressure break formula artificial natural gas migration pathways 2, and discarded well 5 and the each Multilateral Wells 6 of constructing.
7) if desired, it is in place that drill ship can move on to new correct position, sets up new well-case perforating pressure break formula artificial natural gas migration pathway 2 by above-mentioned steps.
Gas reservoir on a small scale: refer to the gas reservoir of gas pool reserve small scale, its recoverable reserves is 2.5 hundred million sides～2,500,000,000 side only.
Abnormal High Pressure Gas Reservoirs: refer to that gas reservoir pressure is higher than hydrostatic pressure, and the pressure coefficient gas reservoir that is greater than 1.2.
Low permeability gas reservoir: refer to reservoir properties poor be permeability ﹤ 10 × 10
-3u ㎡, utilize conventional mining type to be difficult to the gas reservoir of effective scale exploitation.
High containing CO
2gas reservoir: refer to CO in natural gas
2the gas reservoir of content ﹥ 50%.
Screen casing: refer in the present invention and comprise that general screen casing, high-quality screen casing, calking or cutting seam sieve tube, wire-wrapped screen and restraining liner etc. have the sand control pipe of hole, seam.
Production platform: in offshore oil and gas field Development and Production, carry out the platform of oil and gas gathering, separation and preliminary treatment.
Subsea production system: refer to by the whole series such as underwater well head offshore oil and gas production system that production equipment and seabed pipeline form under water, substantially formed by production tree, well head and manifold, control system, control cable, ROV/ROT etc.
Drill ship: be provided with drilling equipment, can carry out the ship of Offshore Operation under mooring location or dynamic positioning state.
The above is the preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention.It should be pointed out that for those skilled in the art, technical scheme of the present invention is modified or is equal to replacement, do not depart from protection scope of the present invention.
Claims (1)
1. a method of setting up well-case perforating pressure break formula artificial natural gas migration pathway between gas reservoir, is characterized in that, comprises the following steps:
A. developed in gas field development early stage at sea, be permeability ﹥ 10mD and the more stable production gas reservoir that distributes from selecting in gas field sandstone reservoir physical property to belong to middle and high infiltration, simultaneously in conjunction with the sandstone reservoir spatial distribution scope of this production gas reservoir and the drilling duty of drill ship, in gas field or it around, select gas reservoir or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or the high CO of containing on a small scale developing
2gas reservoir;
B. set up construction well: according to selected gas reservoir to be developed with the spatial relationship of having developed gas field and producing gas reservoir, at the appropriate location on sea drill ship in place, to ocean floor drilling, form the well of constructing;
C. in construction well, carry out drilling well, make the gas reservoir to be developed of selecting and developed between gas field production gas reservoir to form bore hole;
D. in bore hole, two gas reservoir well sections are lowered to sleeve pipe;
E. cement the well in bore hole and the annular section cement that is lowered between sleeve pipe;
F. the reservoir well section of two gas reservoirs in the cased well section after well cementation is formed to preforation tunnel with perforating gun perforation;
G. the cased well section after perforation forms fracturing fracture by preforation tunnel to needing the Reservoir Section of pressure break to carry out pressure break in two Gas Reservoir well sections;
H. after pressure break on two gas reservoir well sections or before beat bridging plug and carry out packing, between two gas reservoirs, set up the artificial migration pathway of well-case perforating pressure break formula;
Repeating step C, D, E, F, G and H set up the artificial migration pathway of multiple well-case perforating pressure break formula in construction well;
After described step G completes, the working solution in the cased well section corresponding with two gas reservoir well sections is discharged;
Described small-scale gas reservoir refers to that recoverable reserves is 2.5 hundred million sides～2,500,000,000 side's gas reservoir;
Described Abnormal High Pressure Gas Reservoirs refers to that gas reservoir pressure is higher than hydrostatic pressure, and the pressure coefficient gas reservoir that is greater than 1.2;
Described height is containing CO
2gas reservoir refers to CO in natural gas
2the gas reservoir of content ﹥ 50%;
Described low permeability gas reservoir is the gas reservoir of reservoir permeability ﹤ 10 × 10-3u ㎡;
Any type gas reservoir in described above-mentioned Four types gas reservoir is single one type of gas reservoir both, also can have the feature of another type or two types or three types gas reservoir simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430286.8A CN102913206B (en) | 2012-11-01 | 2012-11-01 | Method for building bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430286.8A CN102913206B (en) | 2012-11-01 | 2012-11-01 | Method for building bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913206A CN102913206A (en) | 2013-02-06 |
| CN102913206B true CN102913206B (en) | 2014-11-26 |
Family
ID=47611749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210430286.8A Expired - Fee Related CN102913206B (en) | 2012-11-01 | 2012-11-01 | Method for building bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913206B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081560B (en) * | 2020-09-01 | 2022-10-28 | 成都理工大学 | Development method of deep-sea high-temperature overpressure gas reservoir |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217041A (en) * | 1996-03-12 | 1999-05-19 | 特杰·马格纳森 | Underwater installation and method for building same |
| WO2005003509A1 (en) * | 2003-06-30 | 2005-01-13 | Petroleo Brasileiro S A-Petrobras | Method for, and the construction of, a long-distance well for the production, transport, storage and exploitation of mineral layers and fluids |
| CN101135240A (en) * | 2007-09-04 | 2008-03-05 | 中国科学院武汉岩土力学研究所 | Fluctuation displacement gas deposit dislodging method |
| RU2336414C1 (en) * | 2007-01-12 | 2008-10-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method to develop isolated lithologically screened oil-saturated lense |
| GB2463187A (en) * | 2007-03-13 | 2010-03-10 | Schlumberger Holdings | A method of deploying a completion system into a multilateral well |
| CN102434129A (en) * | 2011-12-24 | 2012-05-02 | 大连理工大学 | Ultra-deepwater offshore oil-gas engineering developing system and mounting method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0671549A1 (en) * | 1994-03-10 | 1995-09-13 | Shell Internationale Researchmaatschappij B.V. | Method of producing a fluid from an earth formation |
| US8316954B2 (en) * | 2009-12-22 | 2012-11-27 | Halliburton Energy Services, Inc. | Apparatus and method for separating a downhole tubular string into two parts |
-
2012
- 2012-11-01 CN CN201210430286.8A patent/CN102913206B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217041A (en) * | 1996-03-12 | 1999-05-19 | 特杰·马格纳森 | Underwater installation and method for building same |
| WO2005003509A1 (en) * | 2003-06-30 | 2005-01-13 | Petroleo Brasileiro S A-Petrobras | Method for, and the construction of, a long-distance well for the production, transport, storage and exploitation of mineral layers and fluids |
| RU2336414C1 (en) * | 2007-01-12 | 2008-10-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method to develop isolated lithologically screened oil-saturated lense |
| GB2463187A (en) * | 2007-03-13 | 2010-03-10 | Schlumberger Holdings | A method of deploying a completion system into a multilateral well |
| CN101135240A (en) * | 2007-09-04 | 2008-03-05 | 中国科学院武汉岩土力学研究所 | Fluctuation displacement gas deposit dislodging method |
| CN102434129A (en) * | 2011-12-24 | 2012-05-02 | 大连理工大学 | Ultra-deepwater offshore oil-gas engineering developing system and mounting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102913206A (en) | 2013-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104533287B (en) | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled well and stimulation system | |
| CN104963671B (en) | A kind of fracturing reform method of High angle from formula well reservoir | |
| CN104806217A (en) | Combined separated layer fracturing, grouping and layer-combining mining method for coal bed well group | |
| CN113738317A (en) | Method for combined exploitation of deep coal bed gas and dry hot rock type geothermal | |
| CN102392677A (en) | Permeability improvement technology for coal bed gas reservoir cap by using three-dimensional fracture network modification | |
| CN107620581B (en) | Construction method of one-well dual-purpose coal mine shaft inspection hole | |
| CN106761606A (en) | The asynchronous note CO of different well of symmetrical expression cloth seam2Oil production method | |
| WO2016078627A1 (en) | Production enhancement system using robot drill for drilling multi-branched fishbone and radial microholes in shale gas reservoir, and method therefor | |
| CN106761612A (en) | The asynchronous water injection oil extraction method of double different wells of pressure break horizontal well of zip mode cloth seam | |
| CN110306965A (en) | A kind of method for increasing for coal bed gas low yield wellblock | |
| CN114135265B (en) | Low-cost and high-efficiency transformation process method for low-permeability reservoir of offshore oil field | |
| CN111734359A (en) | Natural gas hydrate horizontal branch well exploitation method based on deepwater suction anchor | |
| CN112627723A (en) | Ground drilling method for coal bed gas development of coal mine goaf | |
| CN102913203B (en) | Method for developing low-permeability gas reservoir | |
| CN102913206B (en) | Method for building bushing perforation fracturing-type artificial natural gas migration passage between gas reservoirs | |
| CN115182713B (en) | Three-dimensional development method for explosive-tight cutting of shale reservoir three-dimensional horizontal well | |
| CN102913208B (en) | Method for building bushing inner-sieve-tube artificial natural gas migration passage between gas reservoirs | |
| CN102900401B (en) | Method for building sleeve perforating manmade natural gas migration channels between gas pools | |
| CN110984917A (en) | Production-increasing water-controlling sand-preventing well completion method for low-permeability reservoir | |
| CN102913207B (en) | Method for building inner sieve-tube outer gravel-filled artificial natural gas migration passage | |
| CN102913204B (en) | Method for building sieve-tube outer gravel-filled natural gas migration passage between gas reservoirs | |
| CN102913209A (en) | Method for building sieve-tube artificial natural gas migration passage between gas reservoirs | |
| CN102900403B (en) | Method for establishing artificial natural gas migration channel between gas reservoirs | |
| CN102943654A (en) | Method for improving recovery efficiency of high-hydrocarbon-content gas deposit by high-CO2-content gas deposit | |
| CN102913205A (en) | Method for building uncased-hole gravel-filled artificial migration passage between gas reservoirs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20201101 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |