CN102587981B - Underground salt cavern gas storage and building method thereof - Google Patents
Underground salt cavern gas storage and building method thereof Download PDFInfo
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Abstract
The invention belongs to the field of development of oil and gas resources, and particularly relates to an underground salt cavern gas storage and a building method thereof. The underground salt cavern gas storage comprises a salt cavern, a guide tube, a technical casing, a well completion casing, a control valve, a pressure gauge, a packer, slips, a sealing cover and a natural gas injection and extraction tubular column; the natural gas injection and extraction tubular column penetrates into the underground salt cavern from the ground; the well completion casing penetrates into the top of the underground salt cavern form the ground; the bottom end of the well completion casing is connected with the natural gas injection and extraction tubular column via the packer and the slips; the sealing cover, the pressure gauge and the control valve are mounted at the position of a wellhead; and steel grade of the well completion casing in the stratum of the salt cavern is higher than that of a well completion casing in another stratum by a grade. Construction steps include selecting external collapse load; determining model selection of the tubular column and penetration depth; drilling and cementing a well; mounting the packer and the slips; mounting the sealing cover; and mounting the pressure gauge and the control valve. Influence of salt rock creep to safety of the well completion casing is emphasized, simultaneously, the sealing performance of the tubular column is monitored in real time, and safety and reliability are high.
Description
Technical field
The invention belongs to the petroleum resources development field, particularly, relate to a kind of underground salt hole air reserved storeroom and construction method thereof of being applied to.
Background technology
Because China's rock salt has that the salt rock stratum is many, thin thickness and alternately appearance of interlayer; Make underground salt hole air reserved storeroom completion casing post safety face more challenges, mainly contain three aspect reasons: the first, because rock salt has typical creep properties; Rock salt begins place creep near well under the geostatic stress effect of far field; Produce displacement and distortion to wellbore, make geostatic stress act on cement sheath and completion casing, and crowded outward loadmeter reveals very big inhomogeneities through the rock salt creep.The second, interlayer and rock salt physical and mechanical property difference are bigger, when the deformation of creep, show very strong distortion inconsistency, make casing string outside receiving, also need bear interlayer effect shearing force above that in the crowded loading.The 3rd, adopt efficient in order to improve the gas storage notes, gas storage casing string size is general bigger, is unfavorable for sleeve stress and safety.In a single day the salt hole air reserved storeroom casing string destroys, will cause heavy economic losses and life safety.Present stage, mainly there were following 3 shortcomings in underground salt hole air reserved storeroom casing string design:
(1) patent of existing oil gas well completion tube side face is primarily aimed at oil reservoir and gas reservoir, and reckons without salt hole air reserved storeroom actual condition and loading characteristic, will have potential safety hazard if be applied to the salt hole air reserved storeroom completion tubular column.
(2) in to the sleeve design in the rock salt stratum with rock salt section stratum sleeve stress as design considerations, often make that the casing string safety redundancy in the upper formation is higher, cause waste.
(3) in the middle sleeve post design process of rock salt stratum, do not consider the influence of tubing string inner high voltage gas, natural gas leaking monitoring and control device are not set, security reliability is low.
The present invention takes all factors into consideration underground salt hole air reserved storeroom operation operating mode, at the pithead position place a plurality of pressure meters is installed and control valve is monitored in real time and controlled possible leakage.Simultaneously, emphasis is considered the influence of rock salt creep, improves to be arranged in rock salt stratum completion tubular column grade of steel, increases the safety of tubing string, reduces whole tubing string expense.
Summary of the invention
The object of the present invention is to provide a kind of underground salt hole air reserved storeroom and construction method thereof, solve a difficult problem that exists in underground salt hole air reserved storeroom completion casing design and the construction; Have the high and dynamic monitoring function of security reliability, further, can effectively reduce the possibility that inefficacy takes place at running middle sleeve post salt hole air reserved storeroom.
Technical scheme of the present invention is following:
A kind of underground salt hole air reserved storeroom comprises salt cave, completion conduit, protective casing, completion casing, packer, slips, seal cover, natural gas injection-production column jacket; The natural gas injection-production column jacket is deep into underground salt cave from ground inner; Completion casing is deep into top, underground salt cave from ground; The completion casing bottom is connected with slips through packer with the natural gas injection-production column jacket, and the slips lower surface is concordant with the completion casing bottom, and packer is positioned at the slips upper end and links to each other with slips; Pressure balance liquid is full of the annular space on packer between whole natural gas injection-production column jacket and completion casing; Completion conduit, protective casing and completion casing adopt the cement paste gluing to be in the same place, and the top is concordant with ground and seal cover is installed; It is characterized in that: pressure meter and control valve are installed on the seal cover, are used for monitoring and control natural gas leaking.
Preferably, at natural gas injection-production column jacket ground location place first seal cover is installed; First control valve, second control valve and first pressure meter are installed on first seal cover; First control valve is used to control the notes of natural gas in the natural gas injection-production column jacket to be adopted, and second control valve and first pressure meter are used to monitor the variation of natural gas injection-production column jacket internal pressure.
Preferably, at the ground location place of natural gas injection-production column jacket and completion casing annular space second seal cover is installed; The 3rd control valve and second pressure meter are installed on second seal cover, are used for monitoring and control natural gas leaking.
Preferably, at the ground location place of completion casing and protective casing annular space the 3rd seal cover is installed; The 4th control valve and the 3rd pressure meter are installed on the 3rd seal cover, are used for monitoring and control natural gas leaking.
Preferably, at the ground location place of protective casing and completion conduit annular space the 4th seal cover is installed; The 5th control valve and the 4th pressure meter are installed on the 4th seal cover, are used for monitoring and control natural gas leaking.
Preferably, in the rock salt stratum grade of steel of completion casing than the high one-level in the mudstone stratum.
The construction method of underground salt hole air reserved storeroom is characterized in that comprising the steps:
(1), outward squeezing load chooses: utilize the acoustic logging data or should have the casing collapse parameter in the zone, obtain the minimum and maximum stress value flatly on rock salt stratum, gas storage tip position place;
(2), tubing string type selecting and depth of setting are confirmed: according to natural gas injection-production column jacket size Selection completion pipe box, protective casing, completion conduit size, confirm completion conduit, protective casing and completion casing depth of setting parameter;
(3), drilling well and completion: drilling well to completion conduit, protective casing and completion casing projected depth place, successively be lowered to completion conduit, protective casing and completion casing, in the annular space of tubing string and ground interlayer, inject the cement paste completion, cement paste returns high to ground, waits and coagulates; The grade of steel of completion casing is than the high one-level in the mudstone stratum in the rock salt stratum;
(4), packer and slips are installed: molten drench is made chamber to salt cave and is reached design size; The completion casing bottom is connected with the natural gas injection-production column jacket with slips through packer is installed, and in the above annular space of packer the injection pressure equilibrium liquid;
(5), seal cover is installed: the ground location place at natural gas injection-production column jacket, natural gas injection-production column jacket and completion casing annular space, completion casing and protective casing annular space, protective casing and completion conduit annular space installs first seal cover, second seal cover, the 3rd seal cover and the 4th seal cover respectively;
(6), pressure meter and control valve are installed: first control valve, second control valve and first pressure meter are installed on first seal cover of natural gas injection-production column jacket ground location; First control valve is used to control the notes of natural gas in the natural gas injection-production column jacket to be adopted, and second control valve and first pressure meter are used to monitor the variation of natural gas injection-production column jacket internal pressure.
Preferably, the 3rd control valve and second pressure meter are installed above second seal cover of the ground location of natural gas injection-production column jacket and completion casing annular space, are used for monitoring and control natural gas leaking.
Preferably, the 4th control valve and the 3rd pressure meter are installed above the 3rd seal cover of the ground location of completion casing and protective casing annular space, are used for monitoring and control natural gas leaking.
Preferably, the 5th control valve and the 4th pressure meter are installed on the 4th seal cover of the ground location of protective casing and completion conduit annular space, are used for monitoring and control natural gas leaking.
Emphasis of the present invention has been considered the rock salt creep to completion casing post Influence on security, improves to be arranged in rock salt stratum completion tubular column grade of steel, increases the safety of tubing string, can significantly reduce whole tubing string expense with original compared with techniques.Simultaneously, the present invention can carry out real-time monitoring to the sealing of the whole tubular column system of salt hole air reserved storeroom, in time finds to prevent security incident by natural gas leaking; The 3rd, tubular column structure work progress of the present invention is simple, feasible, does not need extra increase construction operation instrument and operation.Summarize saidly, the present invention has advantages such as security performance is good, work progress is simple, expense is low.
Description of drawings
Fig. 1 is a kind of underground salt hole air reserved storeroom structural representation;
Fig. 2 is Fig. 1 partial enlarged drawing;
Among the figure: 1, ground, 2, cement paste, 3, the completion conduit, 4, protective casing, 5, the mudstone stratum completion casing; 6, pressure balance liquid, 7, rock salt stratum completion casing, 8, packer, 9, slips, 10, the salt cave; 11, natural gas injection-production column jacket, 12, the rock salt stratum, 13, mudstone stratum, 41, first control valve; 42, second control valve, the 43, the 3rd control valve, the 44, the 4th control valve, the 45, the 5th control valve; 51, first pressure meter, 52, second pressure meter, the 53, the 3rd pressure meter, the 54, the 4th pressure meter; 31, first seal cover, 32, second seal cover, the 33, the 3rd seal cover, the 34, the 4th seal cover.
The specific embodiment
As shown in Figure 1, salt cave 10 distance from top face of land 975.6m are 23.2m apart from top mudstone stratum 13 bottom surfaces; Mudstone stratum 13 buried depths are 0～945.6m, and rock salt stratum 12 buried depths are 945.6m～1116.4m.
Underground salt hole air reserved storeroom structure comprises: cement paste 2; Completion conduit 3; Protective casing 4; Mudstone stratum completion casing 5; Pressure balance liquid 6; Rock salt stratum completion casing 7; Packer 8; Slips 9; Salt cave 10; Natural gas injection-production column jacket 11; First control valve 41; Second control valve 42; The 3rd control valve 43; The 4th control valve 44; The 5th control valve 45; First pressure meter 51; Second pressure meter 52; The 3rd pressure meter 53; The 4th pressure meter 54; First seal cover 31; Second seal cover 32; The 3rd seal cover 33; The 4th seal cover 34.
1 to be deep into the salt cave inner from ground for natural gas injection-production column jacket 11, and natural gas injection-production well tubing string external diameter is that 177.8mm, wall thickness 9.19mm, grade of steel are P110; Completion casing is deep into top, underground salt cave from ground; The completion casing bottom is connected 9 through packer 8 with slips with the natural gas injection-production column jacket, and the slips lower surface is concordant with the completion casing bottom, and packer is positioned at the slips upper end and links to each other with slips; Pressure balance liquid 6 is full of the annular space between whole natural gas injection-production column jacket and completion tubular on packer; Completion conduit 3, protective casing 4 and mudstone stratum completion casing 5 adopt the cement paste gluing to be in the same place; Mudstone stratum completion casing 5 and rock salt stratum completion casing 7 are connected through nipple; Completion casing length is the borehole length on salt cave tip position to the face of land, and protective casing length is 1/6～1/8 completion casing length, and the completion catheter length is 50m.
The 3rd control valve 43 and second pressure meter 52 are formed an element, are installed on second seal cover, are used to monitor and control the natural gas leaking of annular space between natural gas injection-production column jacket and completion casing.
The 4th control valve 44 and the 3rd pressure meter 53 are formed an element, are installed on the 3rd seal cover, are used to monitor and control the natural gas leaking of annular space between completion casing and protective casing.
The 5th control valve 45 and the 4th pressure meter 54 are formed an element, are installed on the 4th seal cover, be used to monitor and control technology sleeve pipe and completion conduit between the natural gas leaking of annular space.
Completion conduit, protective casing and completion casing joint screw thread all adopt has the metal to metal seal structure.
The building course of underground salt hole air reserved storeroom shown in Figure 1 is following:
(1), geostatic stress is confirmed: plan to build the minimum and maximum geostatic stress of salt hole air reserved storeroom formation at target locations according to acoustic logging data interpretation acquisition China and be respectively 14.42MPa and 13.26MPa; The difference that can calculate minimum and maximum stress flatly is 8.02%; Less than 10%, therefore can be according to stress design equably.Can calculate hydrostatic pressure according to the gas storage top to ground distance is 9.56MPa, less than maximum horizontal geostatic stress value, in casing string is selected, is a reference value with 14.42MPa.
(2), tubing string type selecting and depth of setting: according to borehole depth is 975.6m, and then can obtain completion casing length is that 975.6m, protective casing length are that 163m (1/8～1/6 completion casing length), completion catheter length are 50m.According to certain salt hole air reserved storeroom actual bets excavating technology requirement; Natural gas injection-production column jacket external diameter is that 177.8mm, wall thickness are that 9.19mm, grade of steel are N80, and then can select the completion casing external diameter for use is that 244.5mm, wall thickness 10.03mm, grade of steel N80, nipple are inclined to one side trapezoid buckle.Can to obtain this molded cannula collapsoing strength according to the API5CT standard be 21.3MPa, bear in pressure energy power be 39.6MPa, all greater than maximum horizontal geostatic stress 14.42MPa and design maximum gas injection pressure 18MPa, satisfy the requirement of keeping the safety in production.Consider that rock salt stratum middle sleeve also need bear the creep loading effect; It is that 244.5mm, wall thickness 10.03mm, grade of steel C90, nipple are inclined to one side trapezoid buckle that completion casing is selected external diameter for use, and require casing string thickest unevenness less than 5%, maximum ovality is less than 0.3%.Protective casing is external diameter 339.7mm, wall thickness 9.65mm, grade of steel N80.The completion conduit is external diameter 508mm, wall thickness 11.13mm, grade of steel J55.
(3), drilling well and completion: adopting diameter is that the drilling well of 660mm drill bit is to 50m depth location place; Hole angle is lowered to the completion conduit of external diameter 508mm, wall thickness 11.13mm, grade of steel J55 less than 2 °, injects the low-temperature high-early strength brine cement slurry; Return height to ground, wait and coagulated 12 hours; Adopt diameter be the drilling well of 444.5mm drill bit to 163m depth location place, hole angle is lowered to the protective casing of external diameter 339.7mm, wall thickness 9.65mm, grade of steel N80 less than 2 °, injects the low-temperature high-early strength brine cement slurry, returns highly to ground, waits and coagulates 12～24 hours; Adopting diameter is 314.1mm drill bit drilling well to 1090.6m depth location place (comprising gas storage design height 115m), and hole angle is less than 2 °.Mudstone stratum 25 buried depths are 0～945.6m, and being lowered to external diameter and being 244.5mm, wall thickness 10.03mm, grade of steel N80, nipple is the completion casing of inclined to one side trapezoid buckle; Rock salt stratum buried depth is that to be lowered to external diameter be that 244.5mm, wall thickness 10.03mm, grade of steel C90, nipple are the completion casing of inclined to one side trapezoid buckle to 945.6m～975.6m.Inject the low-temperature high-early strength brine cement slurry, return height, wait and coagulated 24 hours to ground.
(4), packer and slips are installed: the molten drench of employing injection clear water is made the chamber and is finished through adding oily salt hole air reserved storeroom shape to the design size of controlling of top structure protection; In completion casing, be lowered to the natural gas injection-production column jacket and be positioned at gas storage tip position installation Y422 type packer, slips, set at natural gas injection-production column jacket and completion casing; Injection pressure equilibrium liquid in the above annular space of packer, can calculate its hydrostatic pressure is 9.56MPa.
Y422 type packer nominal operation pressure reduction is 20MPa, and can obtain the pressure that packer can seal is 29.56MPa, greater than pressing 18MPa in the salt hole air reserved storeroom design maximum, satisfies seal request.
(5), seal cover is installed: at natural gas injection-production column jacket pithead position first seal cover is installed, is sealed whole natural gas injection-production column jacket; Second seal cover is installed, the sealing annular space on the annular space of natural gas injection-production column jacket and mudstone stratum completion casing pithead position; On the annular space of completion casing and protective casing pithead position, the 3rd seal cover is installed, the sealing annular space; The 4th seal cover is installed, the sealing annular space on the annular space of protective casing and completion conduit pithead position.
(6), pressure meter and control valve are installed: first control valve, second control valve and first pressure meter are installed on first seal cover.First control valve is used to control the notes of natural gas in the natural gas injection-production column jacket and adopts; Second control valve and first pressure meter are formed an element and are used to monitor the variation of natural gas injection-production column jacket internal pressure.The 3rd control valve and second pressure meter are installed, the natural gas leaking of annular space between monitoring and control natural gas injection-production column jacket and completion casing on second seal cover.The 4th control valve and the 3rd pressure meter are installed, the natural gas leaking of annular space between monitoring and control completion casing and protective casing on the 3rd seal cover.The 5th control valve and the 4th pressure meter are installed, the natural gas leaking of annular space between monitoring and control technology sleeve pipe and completion conduit on the 4th seal cover.
So far underground salt hole air reserved storeroom construction is accomplished, and the debugging back gets into operation.Pressure meter is used to monitor the gas pressure variation in the present embodiment, and control valve is used to control natural gas leaking, can prevent natural gas leaking by the closing presure valve in case gas pressure is higher than the pressure meter rated pressure; Pressure meter and control valve are the product that Wuxi City China village instrument and meter for automation factory produces; It is direct circulation mode or anti-endless form that the chamber mode is made in molten drench; Top structure protection oil is diesel oil or kerosene or heavy straight-run naphtha.
Claims (10)
1. a underground salt hole air reserved storeroom comprises salt cave, completion conduit, protective casing, completion casing, packer, slips, seal cover, natural gas injection-production column jacket; The natural gas injection-production column jacket is deep into underground salt cave from ground inner; Completion casing is deep into top, underground salt cave from ground; The completion casing bottom is connected with slips through packer with the natural gas injection-production column jacket, and the slips lower surface is concordant with the completion casing bottom, and packer is positioned at the slips upper end and links to each other with slips; Pressure balance liquid is full of the annular space on packer between whole natural gas injection-production column jacket and completion casing; Completion conduit, protective casing and completion casing adopt the cement paste gluing to be in the same place, and the top is concordant with ground and seal cover is installed; It is characterized in that: pressure meter and control valve are installed on the seal cover, are used for monitoring and control natural gas leaking.
2. underground salt hole air reserved storeroom according to claim 1 is characterized in that: the place is equipped with first seal cover at natural gas injection-production column jacket ground location; First control valve, second control valve and first pressure meter are installed on first seal cover; First control valve is used to control the notes of natural gas in the natural gas injection-production column jacket to be adopted, and second control valve and first pressure meter are used to monitor the variation of natural gas injection-production column jacket internal pressure.
3. underground salt hole air reserved storeroom according to claim 1 and 2 is characterized in that: the ground location place at natural gas injection-production column jacket and completion casing annular space is equipped with second seal cover; The 3rd control valve and second pressure meter are installed on second seal cover, are used for monitoring and control natural gas leaking.
4. underground salt hole air reserved storeroom according to claim 3 is characterized in that: the ground location place at completion casing and protective casing annular space is equipped with the 3rd seal cover; The 4th control valve and the 3rd pressure meter are installed on the 3rd seal cover, are used for monitoring and control natural gas leaking.
5. underground salt hole air reserved storeroom according to claim 4 is characterized in that: the ground location place at protective casing and completion conduit annular space is equipped with the 4th seal cover; The 5th control valve and the 4th pressure meter are installed on the 4th seal cover, are used for monitoring and control natural gas leaking.
6. underground salt hole air reserved storeroom according to claim 5 is characterized in that: the grade of steel of completion casing is than the high one-level in the mudstone stratum in the rock salt stratum.
7. the construction method of the described underground salt hole air reserved storeroom of one of claim 1-6 is characterized in that comprising the steps:
(1), outward squeezing load chooses: utilize the acoustic logging data or should have the casing collapse parameter in the zone, obtain the minimum and maximum stress value flatly on rock salt stratum, gas storage tip position place;
(2), tubing string type selecting and depth of setting are confirmed: according to natural gas injection-production column jacket size Selection completion casing, protective casing, completion conduit size, confirm completion conduit, protective casing and completion casing depth of setting parameter;
(3), drilling well and completion: drilling well to completion conduit, protective casing and completion casing projected depth place, successively be lowered to completion conduit, protective casing and completion casing, in the annular space of tubing string and ground interlayer, inject the cement paste completion, cement paste returns high to ground, waits and coagulates; The grade of steel of completion casing is than the high one-level in the mudstone stratum in the rock salt stratum;
(4), packer and slips are installed: molten drench is made chamber to salt cave and is reached design size; The completion casing bottom is connected with the natural gas injection-production column jacket with slips through packer is installed, and in the above annular space of packer the injection pressure equilibrium liquid;
(5), seal cover is installed: the ground location place at natural gas injection-production column jacket, natural gas injection-production column jacket and completion casing annular space, completion casing and protective casing annular space, protective casing and completion conduit annular space installs first seal cover, second seal cover, the 3rd seal cover and the 4th seal cover respectively;
(6), pressure meter and control valve are installed: first control valve, second control valve and first pressure meter are installed on first seal cover of natural gas injection-production column jacket ground location; First control valve is used to control the notes of natural gas in the natural gas injection-production column jacket to be adopted, and second control valve and first pressure meter are used to monitor the variation of natural gas injection-production column jacket internal pressure.
8. the construction method of underground salt hole air reserved storeroom according to claim 7; It is characterized in that: the 3rd control valve and second pressure meter are installed above second seal cover of the ground location of natural gas injection-production column jacket and completion casing annular space, are used for monitoring and control natural gas leaking.
9. according to the construction method of claim 7 or 8 described underground salt hole air reserved storerooms; It is characterized in that: the 4th control valve and the 3rd pressure meter are installed above the 3rd seal cover of the ground location of completion casing and protective casing annular space, are used for monitoring and control natural gas leaking.
10. the construction method of underground salt hole air reserved storeroom according to claim 9; It is characterized in that: the 5th control valve and the 4th pressure meter are installed on the 4th seal cover of the ground location of protective casing and completion conduit annular space, are used for monitoring and control natural gas leaking.
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Families Citing this family (14)
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| CN103195374B (en) * | 2013-03-27 | 2014-10-22 | 西南石油大学 | Method for designing salt rock stratum irregular-shaped sleeve |
| CN104265367A (en) * | 2014-07-24 | 2015-01-07 | 燕山大学 | Salt cavern gas storage cavity bottom communicated water discharge method |
| CN105148824B (en) * | 2015-09-09 | 2017-05-17 | 湖北第二师范学院 | Underground salt cave type reaction kettle, ammonia gas generating device and ammonia gas generating method |
| CN107560721B (en) * | 2017-08-25 | 2023-11-10 | 中国石油化工股份有限公司 | System and method for safely monitoring and analyzing salt cavern gas storage |
| CN108533319A (en) * | 2018-03-26 | 2018-09-14 | 中国石油天然气集团有限公司 | Salt hole air reserved storeroom single tube column makes cavity method |
| CN108798783A (en) * | 2018-06-15 | 2018-11-13 | 中盐金坛盐化有限责任公司 | The new well boring method of gas storage is transformed in the old chamber in salt cave |
| CN108843394A (en) * | 2018-06-15 | 2018-11-20 | 中盐金坛盐化有限责任公司 | Salt hole air reserved storeroom cluster well boring method |
| CN110874678B (en) * | 2018-08-31 | 2022-08-30 | 中国石油天然气股份有限公司 | Method and device for determining highest operating pressure of underground gas storage |
| CN109281667B (en) * | 2018-10-25 | 2022-04-15 | 中盐金坛盐化有限责任公司 | Salt cavern minimum pressure optimization method |
| CN109505655A (en) * | 2019-01-16 | 2019-03-22 | 河南理工大学 | A kind of method of construction of salt hole air reserved storeroom |
| CN110645047B (en) * | 2019-10-29 | 2021-02-26 | 中国科学院武汉岩土力学研究所 | Salt cavern gas storage and gas injection and production method thereof |
| CN113738446B (en) * | 2020-05-28 | 2023-12-22 | 中国石油天然气股份有限公司 | Method for rebuilding air storage in salt cavern |
| CN112228071B (en) * | 2020-09-29 | 2022-01-11 | 中国科学院武汉岩土力学研究所 | Method for detecting gas storage performance of brine mining dissolution cavity of high-impurity salt mine |
| CN113137278B (en) * | 2021-04-30 | 2022-07-29 | 中国石油天然气股份有限公司 | Salt cavern gas storage reveals emergency processing system |
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| US6280000B1 (en) * | 1998-11-20 | 2001-08-28 | Joseph A. Zupanick | Method for production of gas from a coal seam using intersecting well bores |
| DE10117617A1 (en) * | 2001-04-07 | 2002-10-10 | Ruhrgas Ag | System for storing fluid in underground hollow chamber comprises storage chamber for displacement fluid formed as underground hollow chamber |
| CN101315025B (en) * | 2008-06-05 | 2011-09-21 | 太原理工大学 | Construction method for rock salt cavity gas storage house |
| CN201212387Y (en) * | 2008-06-18 | 2009-03-25 | 北京华油油气技术开发有限公司 | Gas injection, gas production and brine discharge integration process pipe column for underground gas storage |
| CN102587980B (en) * | 2012-03-12 | 2012-12-26 | 中国石油大学(华东) | Multiple-interlayer salt cavern gas storage and building method of multiple-interlayer salt cavern gas storage |
| CN102587982B (en) * | 2012-03-12 | 2013-01-23 | 中国石油大学(华东) | Underground salt cavern gas storage groups and method for constructing same |
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