CN202338292U - Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage - Google Patents
Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage Download PDFInfo
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- CN202338292U CN202338292U CN2011204304135U CN201120430413U CN202338292U CN 202338292 U CN202338292 U CN 202338292U CN 2011204304135 U CN2011204304135 U CN 2011204304135U CN 201120430413 U CN201120430413 U CN 201120430413U CN 202338292 U CN202338292 U CN 202338292U
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- pipe string
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Abstract
The utility model discloses an injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage and an operating method of the injection-production pipe string. In order to build the underground gas storage through an exhaustion type oil-gas reservoir, the injection-production pipe string comprises a safety valve (1), an expansion pipe (5), a circulating sliding sleeve (6), a packer (8) and a seating pipe nipple (9) are sequentially connected from the upper part to the lower part through an oil pipe (7); a perforating gun (10) is installed at the lower end of the oil pipe (7); and the perforating gun (10) is positioned in a gas bearing reservoir (11). The injection-production pipe string adopts an injection-production well completion combination technology, the bottom end of the well completion pipe string is connected with a perforating pipe string and simultaneously led into a well, the perforating pipe string is released to the bottom of the well through release equipment after perforating, then testing and producing can be performed, the pollution on a perforated hydrocarbon reservoir by well control fluid is avoided when the two pipe strings are pulled, and the operating steps are simplified. The injection-production pipe string has the benefits that the structure is reasonable, the bottom end of the well completion pipe string is connected with the perforating pipe and simultaneously led into the well, perforating, testing, well completion and gas injection and production are accomplished in one step, a reservoir bed is effectively protected, and requirements of subsequent snubbing rework are met.
Description
Technical field
The utility model relates to a kind of underground natural gas storage tank injection-production column jacket, especially relates to a kind of exhausted formula oil-gas reservoir underground natural gas storage tank injection-production column jacket.
Background technology
The type of underground natural gas storage tank generally comprises rock salt cave, exhausted oil field, underground reservoir, exhausted oil gas field.
Its storage capacity of underground natural gas storage tank, salt cave is little; The salt deposit creep is prone to cause sleeve pipe to damage, and makes a large amount of volumetric losses; Brine discharge, seepage possibly cause gas loss; Build the storehouse cycle long, investment is many, builds the sealing of cavity in the storehouse, there is certain risk in stable aspect.
The gas storage of exhausted oil field reconstruction carries a certain amount of crude oil owing to remaining in the oil reservoir residual oil that can't exploit arranged in the gas that back production goes out, need specially treated, makes to be restricted when using.
The underground reservoir gas storage was not owing to had gas in the water layer originally; Required cushion gas large usage quantity, and this part gas is can not extraction gas, gas-water interface is difficult to control; Adopt " with gas drive water " mode that gas takes place easily and bores into, this is higher, the construction period is long therefore to build Kucheng.
Exhausted formula oil-gas reservoir reconstruction underground natural gas storage tank; Original oil-gas reservoir can be reused,, necessary permeability of gas storage and degree of porosity requirement can be satisfied because once oil-containing was gentle in the past; Therefore build short, small investment of storehouse cycle, be best suited for building a type of underground natural gas storage tank.
The utility model content
Utilize exhausted formula oil-gas reservoir to build the underground natural gas storage tank in order to satisfy, the utility model provides a kind of exhausted formula oil-gas reservoir underground natural gas storage tank injection-production column jacket and operational method thereof.
The utility model solves the technical scheme that its technical problem adopted: exhausted formula oil-gas reservoir underground natural gas storage tank injection-production column jacket; Underground have exhausted formula oil-gas reservoir; Production string is from well head to gas-bearing reservoir below, and injection-production column jacket is positioned at production string, the safety valve of injection-production column jacket, telescoping tube, circulation sliding sleeve, packer, is located pipe nipple and from top to bottom and through oil pipe connects successively; The lower end of injection-production column jacket is equipped with perforating gun, and perforating gun is positioned at gas-bearing reservoir.Safety valve is the Ground Control fluid pressure type; The circulation sliding sleeve is hydraulic selector formula or steel wire switching regulator; Packer is retrievable or permanent type; The quantity of being located pipe nipple is 2, on be located pipe nipple and be used for set packer; Be located the instrument that pipe nipple is used for hanging production test down.
The beneficial effect of the utility model is, and is rational in infrastructure, connects the perforation tubing string in the completion tubular column bottom simultaneously in the lower going-into-well, and technology perforation, test, completion, notes gas production tubing string are once accomplished, and have effectively protected reservoir; Satisfy later stage not kill-job workover treatment requirement.
Description of drawings
Fig. 1 is the exhausted formula oil-gas reservoir of a utility model underground natural gas storage tank injection-production column jacket structural representation.
Among the figure: 1. safety valve, 2. surface pipe, 3. protective casing, 4. production string, 5. telescoping tube, 6. circulation sliding sleeve, 7. oil pipe, 8. packer 9. is located pipe nipple, 10. perforating gun, 11. gas-bearing reservoirs.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.But what those skilled in the art should know is that the utility model is not limited to the listed specific embodiment, as long as meet the spirit of the utility model, all should be included in the protection domain of the utility model.
Referring to accompanying drawing 1.Exhausted formula oil-gas reservoir underground natural gas storage tank injection-production column jacket; Underground have exhausted formula oil-gas reservoir; Be consolidated with surface pipe 2, protective casing 3, production string 4 in the pit shaft from outside to inside successively, production string 4 is from well head to gas-bearing reservoir 11 belows, and injection-production column jacket is positioned at production string 4.
Injection-production column jacket comprises oil pipe 7, safety valve 1, telescoping tube 5, circulation sliding sleeve 6, packer 8, is located pipe nipple 9; And safety valve 1, telescoping tube 5, circulation sliding sleeve 6, packer 8, be located pipe nipple 9 and from top to bottom and through oil pipe 7 connect successively, the lower end of injection-production column jacket is equipped with perforating gun 10; Perforating gun 10 is positioned at gas-bearing reservoir 11.
For the safety of guaranteeing injection-production well and annotate production test and relevant job safety in the gas production process, prevent the pollution of the environment, at injection-production column jacket safety valve 1 is installed.According to the gas storage actual needs, confirm to select for use tubing string to remove the safety valve 1 of ground hydraulic control, safety valve 1 adopts self-balancing type, when christmas tree is damaged or ground can realize closing automatically when situation such as fire, pressure anomaly occurring.
Because the gas storage injection-production well has gas injection and gas production dual-use function, and the injection-production column jacket bottom adopted packer 8 fixing, and the variation of interior thermal field of pit shaft and pressure field can cause the subsidiary stress of tubing string when gas injection and gas production.Use expansion pipe 5, this tubing string can be stretched about 3 meters, the reversed of stress in the time of can offsetting " gas injection " and " gas production " has increased the safety of tubing string, and has prolonged the application life of tubing string.
Circulation sliding sleeve 6 is one of vitals of injection-production column jacket.In the injection-production well manufacturing process,, all realize through circulation sliding sleeve 6 if will carry out replacement, the gaslift of well-flushing, protection liquid empties etc.Circulation sliding sleeve 6 is selected hydraulic selector formula or steel wire switching regulator for use.
Packer 8 is selected retrievable or permanent type for use.Annotate gas recovery well for gas storage, in order to increase the service life, the sleeve pipe that needs protection is avoided the HTHP influence, and the corrosion of corrosive gas.
In the design of injection-production column jacket, the quantity of being located pipe nipple 9 is 2, on be located pipe nipple 9 and be used for set packer 8, and the pressure at salable isolated two ends; Be located the instrument that pipe nipple 9 is used for hanging production test down, reach the purpose of pressure measurement, thermometric, to judge the operation conditions of gas storage.
Use the exhausted formula oil-gas reservoir of the utility model underground natural gas storage tank injection-production column jacket, make perforation, test, completion, notes gas production tubing string once accomplish, effectively protected reservoir; Adopt packer, protected sleeve pipe; Supporting test pipe nipple can satisfy the monitoring requirement; The alternating stresses that when expansion pipe can be eliminated gas injection, gas production change working tubing string is produced; Supporting safety valve can be realized the automatic closing well in down-hole when emergency; Can satisfy later stage not kill-job workover treatment requirement.
It should be noted that the foregoing description is example and unrestricted the utility model, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (5)
1. exhausted formula oil-gas reservoir underground natural gas storage tank injection-production column jacket; Underground have exhausted formula oil-gas reservoir; Production string is from well head to gas-bearing reservoir below; Injection-production column jacket is positioned at production string, it is characterized in that: the safety valve of said injection-production column jacket (1), telescoping tube (5), circulation sliding sleeve (6), packer (8), be located pipe nipple (9) and from top to bottom and through oil pipe (7) connect successively; Injection-production column jacket oil pipe (7) bottom is equipped with perforating gun (10), and perforating gun (10) is positioned at gas-bearing reservoir (11).
2. according to the said exhausted formula oil-gas reservoir of claim 1 underground natural gas storage tank injection-production column jacket, it is characterized in that: said safety valve (1) is the Ground Control fluid pressure type.
3. according to the said exhausted formula oil-gas reservoir of claim 1 underground natural gas storage tank injection-production column jacket, it is characterized in that: said circulation sliding sleeve (6) is hydraulic selector formula or steel wire switching regulator.
4. according to the said exhausted formula oil-gas reservoir of claim 1 underground natural gas storage tank injection-production column jacket, it is characterized in that: said packer (8) is retrievable or permanent type.
5. according to the said exhausted formula oil-gas reservoir of claim 1 underground natural gas storage tank injection-production column jacket, it is characterized in that: said quantity of being located pipe nipple (9) is 2, on be located pipe nipple (9) and be used for set packer (8); Be located pipe nipple (9) down and be used for hanging the instrument of production test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204304135U CN202338292U (en) | 2011-11-03 | 2011-11-03 | Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204304135U CN202338292U (en) | 2011-11-03 | 2011-11-03 | Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338292U true CN202338292U (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204304135U Expired - Lifetime CN202338292U (en) | 2011-11-03 | 2011-11-03 | Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage |
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| CN (1) | CN202338292U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089199A (en) * | 2011-11-03 | 2013-05-08 | 大港油田集团有限责任公司 | Depleted oil-gas reservoir underground gas storage injection-production string and operating method thereof |
| CN103790523A (en) * | 2012-11-03 | 2014-05-14 | 中国石油化工股份有限公司 | Technique string for offshore oil production |
| CN105239965A (en) * | 2015-10-14 | 2016-01-13 | 中国石油天然气集团公司 | Gas injection and brine discharge method for salt-cavern gas storage |
| CN108952672A (en) * | 2017-05-18 | 2018-12-07 | 中国石油天然气股份有限公司 | Midway testing tubular column of immobile drilling tool and use method |
| CN111140202A (en) * | 2020-01-13 | 2020-05-12 | 中国石油天然气股份有限公司 | Deep well and ultra-deep well integrated production completion pipe string and operation method thereof |
-
2011
- 2011-11-03 CN CN2011204304135U patent/CN202338292U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089199A (en) * | 2011-11-03 | 2013-05-08 | 大港油田集团有限责任公司 | Depleted oil-gas reservoir underground gas storage injection-production string and operating method thereof |
| CN103790523A (en) * | 2012-11-03 | 2014-05-14 | 中国石油化工股份有限公司 | Technique string for offshore oil production |
| CN105239965A (en) * | 2015-10-14 | 2016-01-13 | 中国石油天然气集团公司 | Gas injection and brine discharge method for salt-cavern gas storage |
| CN105239965B (en) * | 2015-10-14 | 2019-04-12 | 中国石油天然气集团公司 | Halogen method is arranged in salt hole air reserved storeroom gas injection |
| CN108952672A (en) * | 2017-05-18 | 2018-12-07 | 中国石油天然气股份有限公司 | Midway testing tubular column of immobile drilling tool and use method |
| CN111140202A (en) * | 2020-01-13 | 2020-05-12 | 中国石油天然气股份有限公司 | Deep well and ultra-deep well integrated production completion pipe string and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |