CN102913207B - Method for building inner sieve-tube outer gravel-filled artificial natural gas migration passage - Google Patents
Method for building inner sieve-tube outer gravel-filled artificial natural gas migration passage Download PDFInfo
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- CN102913207B CN102913207B CN201210430287.2A CN201210430287A CN102913207B CN 102913207 B CN102913207 B CN 102913207B CN 201210430287 A CN201210430287 A CN 201210430287A CN 102913207 B CN102913207 B CN 102913207B
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Abstract
The invention discloses a method for building an inner sieve-tube outer gravel-filled artificial natural gas migration passage, and the method comprises 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 the two gas reservoir well sections; conducting well cementing between the uncased hole and the loaded bushing by utilizing the cement; forming a perforation hole on two gas reservoir storage well sections in the bushing well section after being cemented by utilizing a perforation gun; loading a sieve tube into the bushing well section, and filling gravels between the bushing and the sieve tube; and setting a bridge plug above or in front of the two gas reservoirs well sections after being filled with the gravels to seal, so that the artificial migration passage is formed. The inner sieve-tube outer gravel-filled artificial natural gas migration passage is conveniently built between the reservoir sand of the production gas reservoir of the developed gas field and the selected gas reservoir to be developed, and the 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 sieving outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe of setting up between gas reservoir.
Background technology
In THE WESTERN SOUTH CHINA SEA marine site, develop gas field inner or around, had 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, from new production platform or subsea production system, be built into and put into production, 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 from built production platform or subsea production system drilling well, develop the situation that cannot realize because of reasons 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
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
2gas reservoir development is all very high to the pressure security class requirement of relevant materials and requirement for anticorrosion, 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 sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe 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 sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe, comprises the following steps:
A, at sea developed in gas field development early stage, from selecting in gas field sandstone reservoir physical property to belong to middle and high infiltration, be permeability ﹥ 10mD and the more stable production gas reservoir that distributes, in conjunction with this, produce the sandstone reservoir spatial distribution scope of gas reservoir and the drilling duty of drill ship simultaneously, developing 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 selects to be applicable to the present invention's exploitation in gas field or around it
2gas reservoir.
B, set up construction well: according to selected gas reservoir to be developed with developed the spatial relationship that gas field produces 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, in bore hole and the annular section that is lowered between sleeve pipe, with cement, cement the well;
F, the reservoir well section use perforating gun perforation formation preforation tunnel to two gas reservoirs in the cased well section after well cementation;
In G, the cased well section after well cementation and perforation, be lowered to screen casing;
H, the sleeve pipe after described perforation and be lowered to the annular section pack gravel between screen casing;
On I, two gas reservoir well sections after gravel pack or before beat bridging plug and carry out packing, between two gas reservoirs, set up and in sleeve pipe, sieve the artificial migration pathway of outside casing gravel packing formula.
Repeating step C, D, E, F, G, H and I, sieve outside casing gravel packing formula artificial natural gas migration pathway setting up in well in construction in a plurality of sleeve pipes.
After described step H completes, the working solution in the cased well section after gravel pack 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 reasons such as economy, technology in gas field or around it of having 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 sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe, 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 and develop the existing well pattern that gas field production platform or subsea production system are produced gas reservoir, in sleeve pipe, the above well section of sieve outside casing gravel packing 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 sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe, 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.
Accompanying drawing explanation
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 sieve outside casing gravel packing formula artificial natural gas migration pathway in the sleeve pipe shown in Fig. 1.
In figure: 1, selected gas reservoir to be developed; 2, sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe; 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, screen casing; 16, gravel.
The specific embodiment
As shown in Figure 1, set up the method for sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe, comprise the following steps:
1) at sea developed in gas field development early stage, from selecting in gas field sandstone reservoir physical property to belong to middle and high infiltration, be permeability ﹥ 10mD and the more stable production gas reservoir 4 that distributes, while is produced the sandstone reservoir spatial distribution scope of gas reservoir 4 and the drilling duty of drill ship 9 in conjunction with this, and at the gas reservoir to be developed 1 of developing in gas field or the applicable the present invention of its selection around develops, gas reservoir or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or height contain CO on a small scale
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, at sea suitable ground location drill ship 9 in place, forms construction well 5;
3) as shown in Figure 2, utilizing construction well 5, is small-scale gas reservoir or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO at selected gas reservoir to be developed 1
2gas reservoir and developed between the sandstone reservoir that gas field produces gas reservoir 4 and bored bore hole 11, then in bore hole 11, two gas reservoir well sections are lowered to sleeve pipe 12, then in bore hole 11 and the annular section that is lowered between sleeve pipe 12, with cement 13, cement the well, reservoir well section to two gas reservoirs in the sleeve pipe 12 well sections after well cementation forms preforation tunnel 14 with perforating gun perforation, finally in the cased well section after well cementation and perforation, be lowered to screen casing 15, the sleeve pipe 12 after described perforation and be lowered to the annular section pack gravel 16 between screen casing 15;
4) working solution in the 12 well sections of the sleeve pipe after gravel pack can be discharged if desired;
5) on two gas reservoir well sections after gravel pack or before beat bridging plug and carry out packing, between two gas reservoirs, set up and in sleeve pipe, sieve the artificial migration pathway of outside casing gravel packing formula.
6) if desired in the non-wiping situation of drill ship, in construction well 5, can set up a plurality of Multilateral Wells 6, utilize a plurality of Multilateral Wells 6 to bore a plurality of bore holes 11, a plurality of 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 a plurality of 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, in each bore hole 11 and the annular section that is lowered between sleeve pipe 12, with cement 13, cement the well; 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, in sleeve pipe 12 well sections after well cementation and perforation, be lowered to screen casing 15, sleeve pipe 12 after described perforation and be lowered to the annular section pack gravel 16 between screen casing 15, can discharge the working solution in the cased well section after gravel pack if desired; On last two gas reservoir well sections after each corresponding gravel pack or before beat bridging plug 3 and carry out packing, in a plurality of sleeve pipes, sieve outside casing gravel packing formula artificial natural gas migration pathway 2 discarded construction well 5 and each Multilateral Wells 6 developing to build up between sandstone reservoir that gas field produces gas reservoir 4 and each selected gas reservoir to be developed 1.
7) if desired, it is in place that drill ship can move on to new correct position, by above-mentioned steps, sets up and in new sleeve pipe, sieve outside casing gravel packing formula artificial natural gas migration pathway 2.
Small-scale gas reservoir: 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 and wire-wrapped screen 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 sieve outside casing gravel packing formula artificial natural gas migration pathway in sleeve pipe, is characterized in that, comprises the following steps:
A. developed in gas field development early stage at sea, from selecting in gas field sandstone reservoir physical property to belong to middle and high infiltration, be permeability ﹥ 10mD and the more stable production gas reservoir that distributes, in conjunction with this, produce the sandstone reservoir spatial distribution scope of gas reservoir and the drilling duty of drill ship simultaneously, developing in gas field or its gas reservoir of selection small-scale around or Abnormal High Pressure Gas Reservoirs or low permeability gas reservoir or high containing CO
2gas reservoir;
B. set up construction well: according to selected gas reservoir to be developed with developed the spatial relationship that gas field produces 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. in bore hole and the annular section that is lowered between sleeve pipe, with cement, cement the well;
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. in the cased well section after well cementation and perforation, be lowered to screen casing;
H. the sleeve pipe after described perforation and be lowered to the annular section pack gravel between screen casing;
I. on two gas reservoir well sections after gravel pack or before beat bridging plug and carry out packing, between two gas reservoirs, set up and in sleeve pipe, sieve the artificial migration pathway of outside casing gravel packing formula;
Repeating step C, D, E, F, G, H and I, set up in well and in a plurality of sleeve pipes, sieve outside casing gravel packing formula artificial natural gas migration pathway in construction;
After described step H completes, the working solution in the cased well section after gravel pack 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 reservoir permeability ﹤ 10 * 10
-3the gas reservoir of u ㎡.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430287.2A CN102913207B (en) | 2012-11-01 | 2012-11-01 | Method for building inner sieve-tube outer gravel-filled artificial natural gas migration passage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430287.2A CN102913207B (en) | 2012-11-01 | 2012-11-01 | Method for building inner sieve-tube outer gravel-filled artificial natural gas migration passage |
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| CN102913207A CN102913207A (en) | 2013-02-06 |
| CN102913207B true CN102913207B (en) | 2014-03-26 |
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| 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 |
| RU2271442C2 (en) * | 2003-12-26 | 2006-03-10 | Открытое акционерное общество "Промгаз" | Gas-hydrate recovery method |
| 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 |
| GB2463187A (en) * | 2007-03-13 | 2010-03-10 | Schlumberger Holdings | A method of deploying a completion system into a multilateral well |
| CN102165138A (en) * | 2008-08-25 | 2011-08-24 | 雪佛龙美国公司 | Method and system for jointly producing and processing hydrocarbons from natural gas hydrate and conventional hydrocarbon reservoirs |
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 CN201210430287.2A patent/CN102913207B/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 |
| RU2271442C2 (en) * | 2003-12-26 | 2006-03-10 | Открытое акционерное общество "Промгаз" | Gas-hydrate recovery method |
| 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 |
| CN102165138A (en) * | 2008-08-25 | 2011-08-24 | 雪佛龙美国公司 | Method and system for jointly producing and processing hydrocarbons from natural gas hydrate and conventional hydrocarbon reservoirs |
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