CN103557431A - Single shaft type gas storage well - Google Patents
Single shaft type gas storage well Download PDFInfo
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- CN103557431A CN103557431A CN201310585322.2A CN201310585322A CN103557431A CN 103557431 A CN103557431 A CN 103557431A CN 201310585322 A CN201310585322 A CN 201310585322A CN 103557431 A CN103557431 A CN 103557431A
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- pit shaft
- gas storage
- storage well
- shaft
- type gas
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Abstract
The invention discloses a single shaft type gas storage well which comprises a shaft, wherein the shaft is an integral single shaft; an upper seal head and a lower seal head are hermetically arranged at the upper end part and the lower end part of the shaft, respectively; or the upper seal head is hermetically arranged at the upper end part of the shaft and the lower end of the shaft is entirely sealed. According to the single shaft type gas storage well, the integral single shaft is adopted, and except for the upper and lower ends, the whole shaft does not have process connection and is in an integral structure, so that a process of assembling shaft sections into the shaft is eliminated, the quality of the shaft is relatively reliable while the process is simplified, and the potential safety hazard after the shaft formed by connecting the plurality of shaft sections is put into use is avoided.
Description
Technical field
The present invention relates to a kind of gas storage well, particularly a kind of single-cylinder type gas storage well.
Background technique
Petroleum gas gas storage well is conventionally by wellhead assembly, and shaft bottom end socket and pit shaft form.According to national oil and gas industry standard, during gas storage well is built at present, normally adopt the pit shaft that external diameter is less, because mineshaft diameter is little, cause the length of pit shaft longer, be inconvenient to manufacture and transport, so normally segmented in factory, produce some pit shaft sections, then pit shaft sections is transported to gas storage well job site, after assembling at the construction field (site), is fit in deep-well again.And while assembling at the construction field (site), need to build at the construction field (site) assembling place, and the restriction due to job site condition, the assembly precision of pit shaft is difficult to guarantee, so be also difficult to guarantee the assembly precision of pit shaft when increasing difficulty of construction, of poor quality, to have constructed after coming into operation and may leak air, potential safety hazard is large; Because pit shaft is longer, also increase the degree of depth of drilling well in addition, increased difficulty of construction and construction cost.
Summary of the invention
The object of the invention is to for existing gas storage well above shortcomings, provide a kind of and facilitate pit shaft installation, quality good, reduce wellbore construction cost, save the gas storage well of duration.
To achieve these goals, the technical solution used in the present invention is:
A gas storage well, comprises pit shaft, and described pit shaft is whole single pit shaft, and end, the upper and lower two ends of described pit shaft seals respectively and is provided with upper cover and lower seal head; Or described pit shaft upper end end part seal is provided with upper cover, pit shaft lower end integrally closed.Described pit shaft adopts whole single pit shaft to form, and except upper and lower two ends, whole pit shaft connects without technique, is overall structure, has reduced and has assembled the operation that pit shaft sections becomes pit shaft, also makes pit shaft quality more reliable when simplifying working process.
Preferably, described upper cover is connected with lower end end thread with the end, upper end of described pit shaft respectively with lower seal head; Or described upper cover is connected with the upper end end thread of described pit shaft, the lower end hot melt of pit shaft closes up and pit shaft integrally closed.Upper cover and lower seal head are threaded with pit shaft, avoided using the mode of welding to be connected between upper cover and lower seal head and pit shaft, and then avoided processing owing to adopting welding manner pit shaft will carry out stress relief tempering the problem that increases cost, reduced operation and cost when pit shaft is made, pit shaft quality is also better.
Preferably, described pit shaft lower end is also provided with interior end socket, and the outer rim of described interior end socket matches or seals with described shaft in wall.By in pit shaft lower end, interior end socket being set, the outer rim of interior end socket matches with the inwall of pit shaft, plays the effect of seal shaft lower end, has improved the seal of pit shaft lower end.
Preferably, in the outer rim of described interior end socket, be provided with annular groove, in described annular groove, be provided with seal ring.Further improved the seal of pit shaft lower end.
Preferably, the part that end, described pit shaft lower end is stretched out in described interior end socket lower end convexes to form seam along the radially outward of described pit shaft, and described seam is covered on end, described pit shaft lower end.Seam covers on the end, lower end of pit shaft, prevents that interior end socket from entering into pit shaft inside completely, reduces pit shaft gas-storing capacity.
Preferably, between end, described pit shaft lower end and described seam, be provided with packing ring with matching.Between end, pit shaft lower end and seam, packing ring is set, prevents excessive wear between interior end socket and pit shaft and reduce obturation effect, when lower seal head rotates, due to the existence of interior end socket, packing ring does not rotate with outside head, has further improved obturation effect.
Preferably, the bottom of described lower seal head inwall along described pit shaft radially inwardly protruding form annular boss, described annular boss sidewall matches with the sidewall of described seam.By annular boss sidewall, match with ring-type seam sidewall, further firm interior end socket, improves sealing effect.
Preferably, on the outer wall of end, described pit shaft lower end, be provided with ring-type breach, in described annular boss extends upward described ring-type breach is coated on, the sidewall of described ring-type breach matches with the sidewall of described annular boss.。Ring-type breach by pit shaft lower end matches with the annular boss in lower seal head, improves the steadiness of lower seal head, and while preventing from gas storage well is installed, lower seal head is stressed excessive and skew occurs damage the part that is threaded between lower seal head and pit shaft.
Preferably, the external diameter of described single pit shaft is greater than 273.1mm.Employing is compared with the pit shaft of Large Diameter Pipeline, exceed pit shaft maximum diameter 273.1mm in existing NBS, meeting can the large requirement of gas-storing capacity, in the situation that gas-storing capacity is certain, the shorten length of pit shaft, and then make in factory, to make to assemble and be transported to again building site after whole gas storage well and install, when guaranteeing assembly quality, need assembly yard be set in building site yet, and because pit shaft length is short, so also shortened drilling depth, cost and duration have further been saved.
compared with prior art, the invention has the beneficial effects as follows:
Pit shaft of the present invention adopts whole single pit shaft to form, and has reduced the operation that assembling pit shaft sections becomes pit shaft, also makes pit shaft quality more reliable when simplifying working process, and avoids pit shaft that many pit shafts the connect and compose potential safety hazard after coming into operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
Fig. 3 is the structural representation of interior end socket,
Mark in figure: 1-pit shaft, 2-upper cover, 3-lower seal head, end socket in 4-, 5-annular groove, 6-seal ring, 7-seam, 8-packing ring, 9-annular boss, 10-ring-type breach.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.
As Figure 1-3, a kind of single-cylinder type gas storage well of the present invention, comprises pit shaft 1, and described pit shaft 1 is whole single pit shaft, and described pit shaft seals respectively and is provided with upper cover 2 and lower seal head 3 in end, two ends Shang Xia 1 in one embodiment of the invention.Described pit shaft 1 upper end end part seal is provided with upper cover 2 in another embodiment, pit shaft 1 lower end integrally closed, described upper cover 2 is connected with the upper end end thread of described pit shaft 1, and the lower end hot melt of pit shaft 1 closes up and pit shaft integrally closed (not shown).Described pit shaft 1 adopts whole single pit shaft to form, and except upper and lower two ends, whole pit shaft connects without technique, is overall structure, has reduced and has assembled the operation that pit shaft sections becomes pit shaft, also makes pit shaft quality more reliable when simplifying working process.Avoid pit shaft that many pit shafts the connect and compose potential safety hazard after coming into operation.
Described upper cover 2 is connected with lower end end thread with the end, upper end of described pit shaft 1 respectively with lower seal head 3 in another embodiment.Upper cover 2 and lower seal head 3 are threaded with pit shaft 1, avoided using the mode of welding to be connected between upper cover 2 and lower seal head 3 and pit shaft 1, and then avoided processing problem owing to adopting welding manner pit shaft will carry out stress tempering, reduced operation and cost when pit shaft is made, pit shaft quality is also better.Described pit shaft 1 lower end is also provided with interior end socket 4, and the outer rim of described interior end socket 4 matches or seals with described pit shaft 1 inwall.By interior end socket 4 being set in pit shaft 1 lower end, the outer rim of interior end socket 4 matches with the inwall of pit shaft 1, plays the effect of seal shaft 1 lower end, has improved the seal of pit shaft 1 lower end.In the outer rim of described interior end socket 4, be provided with annular groove 5, in described annular groove 5, be provided with seal ring 6.Further improved the seal of pit shaft 1 lower end.The part that described pit shaft 1 end, lower end is stretched out in described interior end socket 4 lower ends convexes to form seam 7 along the radially outward of described pit shaft 1, and described seam 7 is covered on described pit shaft 1 end, lower end.Seam 7 covers on the end, lower end of pit shaft 1, prevents that interior end socket 4 from entering into pit shaft 1 inside completely, reduces pit shaft 1 gas-storing capacity.Between described pit shaft 1 end, lower end and described seam 7, be provided with packing ring 8 with matching.Between pit shaft 1 end, lower end and seam, packing ring 8 is set, prevents excessive wear between interior end socket 4 and pit shaft 1 and reduce obturation effect, when lower seal head 3 rotation, due to the existence of interior end socket 4, packing ring 8 does not rotate with outside head 3, has further improved obturation effect.The bottom of described lower seal head 3 inwalls along described pit shaft 1 radially inwardly protruding form annular boss 9, described annular boss 9 sidewalls match with the sidewall of described seam 7.By annular boss 9 sidewalls, match with ring-type seam 7 sidewalls, further firm interior end socket 4, improves sealing effect.On described pit shaft 1 end, lower end outer wall, be provided with ring-type breach 10, in described annular boss 9 extends upward described ring-type breach 10 is coated on, the sidewall of described ring-type breach 10 matches with the sidewall of described annular boss 9.Ring-type breach 10 by pit shaft 1 lower end matches with the annular boss 9 in lower seal head 3, improves the steadiness of lower seal head 3, and while preventing from gas storage well is installed, lower seal head 3 is stressed excessive and skew occurs damage the part that is threaded between lower seal head 3 and pit shaft 1.The external diameter of described single pit shaft 1 is greater than 273.1mm.In different embodiment's examples, the external diameter of pit shaft 11 is specifically as follows 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm or 1100mm etc.Employing is compared with the pit shaft of Large Diameter Pipeline 1, exceed pit shaft 1 maximum diameter 273.1mm in existing NBS, meeting can the large requirement of gas-storing capacity, in the situation that gas-storing capacity is certain, the shorten length of pit shaft 1, and then make in factory, to make to assemble and be transported to again building site after whole gas storage well and install, when guaranteeing assembly quality, need assembly yard be set in building site yet, and because pit shaft 1 length is short, so also shortened drilling depth, cost and duration have further been saved.
By reference to the accompanying drawings the specific embodiment of the present invention is had been described in detail above, but the present invention is not restricted to above-mentioned mode of execution, in the spirit and scope situation of claim that does not depart from the application, those skilled in the art can make various modifications or remodeling.
Claims (9)
1. a single-cylinder type gas storage well, comprises pit shaft, it is characterized in that, described pit shaft is whole single pit shaft, and end, the upper and lower two ends of described pit shaft seals respectively and is provided with upper cover and lower seal head; Or described pit shaft upper end end part seal is provided with upper cover, pit shaft lower end integrally closed.
2. single-cylinder type gas storage well according to claim 1, is characterized in that, described upper cover is connected with lower end end thread with the end, upper end of described pit shaft respectively with lower seal head; Or described upper cover is connected with the upper end end thread of described pit shaft, the lower end hot melt of pit shaft closes up and pit shaft integrally closed.
3. single-cylinder type gas storage well according to claim 2, is characterized in that, described pit shaft lower end is also provided with interior end socket, and the outer rim of described interior end socket matches or seals with described shaft in wall.
4. single-cylinder type gas storage well according to claim 3, is characterized in that, in the outer rim of described interior end socket, is provided with annular groove, in described annular groove, is provided with seal ring.
5. single-cylinder type gas storage well according to claim 4, is characterized in that, the part that end, described pit shaft lower end is stretched out in described interior end socket lower end convexes to form seam along the radially outward of described pit shaft, and described seam is covered on end, described pit shaft lower end.
6. single-cylinder type gas storage well according to claim 5, is characterized in that, between end, described pit shaft lower end and described seam, is provided with packing ring with matching.
7. single-cylinder type gas storage well according to claim 6, is characterized in that, the bottom of described lower seal head inwall along described pit shaft radially inwardly protruding form annular boss, described annular boss sidewall matches with the sidewall of described seam.
8. single-cylinder type gas storage well according to claim 7, it is characterized in that, on the outer wall of end, described pit shaft lower end, be provided with ring-type breach, in described annular boss extends upward described ring-type breach is coated on, the sidewall of described ring-type breach matches with the sidewall of described annular boss.
9. according to the single-cylinder type gas storage well described in claim 1 to 8 any one, it is characterized in that, the external diameter of described single pit shaft is greater than 273.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585322.2A CN103557431B (en) | 2013-11-19 | 2013-11-19 | Single-cylinder type gas storage well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585322.2A CN103557431B (en) | 2013-11-19 | 2013-11-19 | Single-cylinder type gas storage well |
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| Publication Number | Publication Date |
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| CN103557431A true CN103557431A (en) | 2014-02-05 |
| CN103557431B CN103557431B (en) | 2016-03-30 |
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| CN201310585322.2A Active CN103557431B (en) | 2013-11-19 | 2013-11-19 | Single-cylinder type gas storage well |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103591451A (en) * | 2013-11-19 | 2014-02-19 | 四川川油天然气科技发展有限公司 | Large-diameter gas storage well |
Citations (10)
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|---|---|---|---|---|
| JPH06137433A (en) * | 1992-01-10 | 1994-05-17 | Brunswick Corp | Improved boss for filament winding type pressure vessel |
| WO2003069217A2 (en) * | 2002-02-15 | 2003-08-21 | Sergei Glebovich Koldybaev | Thin-walled liner for high-pressure vessels |
| CN200940767Y (en) * | 2006-06-23 | 2007-08-29 | 哈尔滨航空工业(集团)有限公司 | Composite material cylinder mouth structure of liquefied petroleum gas |
| CN201032050Y (en) * | 2007-04-17 | 2008-03-05 | 曾建军 | Low-temperature liquefied petroleum gas underground gas storage well |
| WO2008153414A1 (en) * | 2007-06-14 | 2008-12-18 | Compressed Energy Technology As | End boss and composite pressure vessel |
| CN102192323A (en) * | 2010-03-10 | 2011-09-21 | 通用汽车环球科技运作有限责任公司 | Clamped liner-boss connection |
| CN102803819A (en) * | 2009-06-10 | 2012-11-28 | 西屋电气有限责任公司 | Domed diaphragm/insert plate for a pressure vessel access closure |
| CN202812775U (en) * | 2012-09-10 | 2013-03-20 | 盛泽能源技术有限公司 | Large-diameter seamless bottle type underground high-pressure gas storage well |
| CN202834718U (en) * | 2012-07-23 | 2013-03-27 | 中油通用鲁西天然气装备有限公司 | Large-capacity steel seamless gas cylinder |
| CN203560716U (en) * | 2013-11-19 | 2014-04-23 | 四川川油天然气科技发展有限公司 | Single-shaft type gas storage well |
-
2013
- 2013-11-19 CN CN201310585322.2A patent/CN103557431B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06137433A (en) * | 1992-01-10 | 1994-05-17 | Brunswick Corp | Improved boss for filament winding type pressure vessel |
| WO2003069217A2 (en) * | 2002-02-15 | 2003-08-21 | Sergei Glebovich Koldybaev | Thin-walled liner for high-pressure vessels |
| CN200940767Y (en) * | 2006-06-23 | 2007-08-29 | 哈尔滨航空工业(集团)有限公司 | Composite material cylinder mouth structure of liquefied petroleum gas |
| CN201032050Y (en) * | 2007-04-17 | 2008-03-05 | 曾建军 | Low-temperature liquefied petroleum gas underground gas storage well |
| WO2008153414A1 (en) * | 2007-06-14 | 2008-12-18 | Compressed Energy Technology As | End boss and composite pressure vessel |
| CN102803819A (en) * | 2009-06-10 | 2012-11-28 | 西屋电气有限责任公司 | Domed diaphragm/insert plate for a pressure vessel access closure |
| CN102192323A (en) * | 2010-03-10 | 2011-09-21 | 通用汽车环球科技运作有限责任公司 | Clamped liner-boss connection |
| CN202834718U (en) * | 2012-07-23 | 2013-03-27 | 中油通用鲁西天然气装备有限公司 | Large-capacity steel seamless gas cylinder |
| CN202812775U (en) * | 2012-09-10 | 2013-03-20 | 盛泽能源技术有限公司 | Large-diameter seamless bottle type underground high-pressure gas storage well |
| CN203560716U (en) * | 2013-11-19 | 2014-04-23 | 四川川油天然气科技发展有限公司 | Single-shaft type gas storage well |
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| CN103557431B (en) | 2016-03-30 |
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Address after: No. 8 in Sichuan Province, Zigong City Industrial Park Road Itakura Ryugo Patentee after: SICHUAN OIL NATURAL GAS TECHNOLOGY CO., LTD. Address before: No. 8 in Sichuan Province, Zigong City Industrial Park Road Itakura Ryugo Patentee before: Sichuan Oil and Natural Gas Scientific Development Co., Ltd. |