CN202769272U - Reinforcing device for high-pressure underground gas storage well - Google Patents
Reinforcing device for high-pressure underground gas storage well Download PDFInfo
- Publication number
- CN202769272U CN202769272U CN 201220372811 CN201220372811U CN202769272U CN 202769272 U CN202769272 U CN 202769272U CN 201220372811 CN201220372811 CN 201220372811 CN 201220372811 U CN201220372811 U CN 201220372811U CN 202769272 U CN202769272 U CN 202769272U
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- anchor
- gas storage
- well
- reinforcing device
- storage well
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Abstract
The utility model belongs to a reinforcing device for a high-pressure underground gas storage well. The reinforcing device comprises an integral press plate, anchor holes or anchor holes and fastening bolts sleeve holes, anchor rods and anchor bolts of the anchor rods, wherein the integral press plate is provided with a trapezoidal (step) hole at the center, and the anchor holes or the anchor holes and the fastening bolt holes are reserved on the integral press plate. By adopting the integral press plate with the trapezoidal hole at the center and arranging the anchor bolts at the lower ends of the anchor rods, binding force of the gas storage well to the stratum is increased, the press plate with the trapezoidal hole at the center is directly sleeved on a joint of a well mouth device so as to axially fix the gas storage well, and the reinforcing device can resist impact force higher than 500KN during use. Accordingly, the reinforcing device for the high-pressure underground gas storage well has the advantages of simple and reliable structure, high impact resistance, no affection on well reinforcing effect due to looseness of the bolts or rust of contact surfaces, capabilities of effectively preventing the gas storage well from runout during use and burst out of the ground when a well shaft is broken and cracked, and guaranteeing safety and reliability during use, low production and using cost, and the like.
Description
Technical field
The utility model belongs to the fuel gas reinforcing device for underground gas storage well.A kind of the fixing of the new high-pressure natural gas well for storage of installing that both can be used for particularly, can be used for again the axial reinforcement to old high-pressure natural gas well for storage, adopt this reinforcing device. pit shaft body and ground can be tightened to one, effectively prevent from altering on the pit shaft body even security incident is caused on the ground that flies out.
Background technique
At present, in CNG (compressed natural gas) supply station and gas peak regulation station, generally adopt well for storage to store high-pressure natural gas.But the impact, the many gas storage wells that changed by cementing quality restriction and geology often do not reach and have just scrapped service life, even occur to alter on the pit shaft, fly out ground and cause security incident.This type of gas storage well depth is generally 50～200m, and the theoretical gap between pit shaft body and the borehole wall is generally less than 3.0cm, and traditional cementing method is poor owing to the basic well perpendicularity that adopts geological drilling to offer, the borehole wall is uneven, and pit shaft is rigidity, and cement slurry is difficult to reach 10m with upper/lower positions.In order to improve the well cementation effect, prevent gas storage well cylindrical shell generation play and the wellhead assembly generation of accident such as fly out when the pit shaft body ruptures.Be that the patent documentation that CN2883872Y, name are called " Well killing appts. of high pressure gas underground gas storage well " discloses a kind of gland that comprises with center hole at notification number, and the kill-job device of being located at the stone bolt of gland bottom band gland, this kill-job device is owing to adopting stone bolt, and utilize regularly foot bolt of the cement slurry that injects in the annular melt pit, this kill-job device since its axial tension less, only can resist the upthrust that is a bit larger tham 200KN, thereby its kill-job effect is limited; Be that CN201635684U, name are called and disclose again a kind of snap ring, draw-bar seat and bolt hole seat of containing in the patent documentation of " a kind of wellhole fixing device of underground gas storage well " at the interior anchor ear that is comprised of two semi-cylindrical shaped hoop bodies and with the pull bar of earth anchor for the defects inventor at notification number, anchor ear for and pit shaft body upper oral part and well head lower flange between connecting sleeve fix by frictional force.Although this fixing device has improved pulling force and the well cementation effect of well cementation to a certain extent; But this fixing device is owing to being to fix by frictional force between hoop body and the pit shaft body connecting sleeve, not only structure is complicated, and connecting sleeve smooth surface, service time one long, bolt since tired the generation between loosening or anchor ear and the pit shaft body connecting sleeve surface of contact become flexible because corrosion produces, its axial restraint effect namely significantly descends, still be difficult to prevent the upper and lower play of pit shaft, break upper pipeline, and cause the generation of the accidents such as pit shaft when fracture near the ground wellhead assembly flies out, equipment and staff's safety is caused the disadvantages such as potential threat.
Summary of the invention
The purpose of this utility model is the disadvantage that exists for background technique, improve a kind of high pressure underground gas well reinforcing device. of design, on the basis of simplifying the reinforcing device. structure, Effective Raise well cementation effect, prevent gas storage well bore generation play and the wellhead assembly generation of accident such as fly out when the pit shaft body ruptures, guarantee well for storage gas storage and Operation safety, reliability, prolong its working life, and effectively prevent safety to equipment and the staff purpose such as threaten.
Solution of the present utility model is axial restraint (location) carried out in the integrated type pressing plate conduct in employing center band trapezoidal (ladder) hole to gas storage well mechanism, replace the anchor ear in the background technique, offer bolthole at the pressing plate periphery and be used for being connected with the anchor pole upper end, anchor is set in the anchor pole lower end fastens to strengthen it with a bolt or latch to the adhesion on stratum; The utility model is namely realized its goal of the invention with this.Therefore, the utility model high pressure underground gas well comprises gas storage well Axial Mounting Part and the anchor pole that is attached thereto with reinforcing device., be located at the anchor door bolt of anchor pole lower end, key be centered by the gas storage well Axial Mounting Part with trapezoidal (ladder) hole the integrated type pressing plate, also be provided with one group as the bolthole that is connected with anchor pole at the pressing plate periphery; Each anchor pole upper end is fixedly connected with pressing plate by bolthole, and each anchor is fastened with a bolt or latch then and the mutual vertical one that is fixed in anchor pole lower end.
The integrated type pressing plate in above-mentioned center band trapezoidal (ladder) hole, when wellhead assembly adopts upper and lower flange connect head, when wellhead assembly adopts upper and lower flange connect, on pressing plate, also be respectively equipped with the clamping bolt trepanning corresponding to upper and lower flange clamping bolt position; During with convenient the installation pressing plate pass each clamping bolt and upper flange upper ring surface and the tight note of cylinder thereof, guarantee the stability that the well body is fixed.And describedly also being provided with one group as the bolthole that is connected with anchor pole at the pressing plate periphery, bolthole is that 2-8 is individual; Supporting anchor pole also should be the 2-8 root mutually with it.
The utility model is owing to the integrated type pressing plate that adopts with trapezoidal (ladder) hole, at pressing plate bolthole or bolthole and flange clamping bolt trepanning are set, directly are placed on the wellhead assembly connecting head as the mechanism that gas storage well is carried out axial restraint (location); The employing lower end arranges the anchor pole of anchor door bolt to strengthen the adhesion to the stratum, and this reinforcing device. can be resisted the above impulse force of 500KN.Thereby have simple in structure, reliable, high, the anti-upthrust of reliability to the axial restraint at gas storage well bore and wellhead assembly top is strong, can not affect its well cementation effect because of bolt looseness or surface of contact corrosion, play in use occurs and the generation of the accidents such as ground that fly out in the top that can effectively prevent gas storage well bore and wellhead assembly when pit shaft body, wellhead assembly fracture, guaranteed in use safety, reliable of gas storage well, and the characteristics such as production and user cost be low.
Description of drawings
Fig. 1 is the utility model structure and embodiment's 1 schematic diagram;
Fig. 2 be embodiment 1 with the gas storage well connecting relation of plug type well opening device and use view;
Fig. 3 is that the utility model embodiment 2 wellhead assemblies are used the reinforcing device. structural representation when adopting upper and lower flange as coupling head;
The connecting relation that Fig. 4 is embodiment 2 when adopting upper and lower flange as the wellhead assembly coupling head and use view.
Among the figure: 1. pressing plate, 1-1. (clamping bolt) trepanning, 2. anchor pole, 3. anchor door bolt, 4. wellhead assembly coupling head, 5. pit shaft mouth coupling head, 6. pit shaft body, 7. (upper and lower flange) clamping bolt.
Embodiment
Embodiment 1: the present embodiment take with mineshaft diameter as Φ 244.48mm (9
5/
8"), gas storage pressure are that 25MPa, gas storage well depth are that the high pressure underground gas well reinforcing device. with the plug type well opening device of 150m is example; it is the steel plate of Φ 410mm that pressing plate 1 adopts thick 50mm, diameter; in the trapezoidal hole: upper center-hole diameter is Φ 222mm, axial high 30mm; lower center-hole diameter is Φ 270.5mm, axial high 20mm, 90 ° of boltholes that are connected with anchor pole 2 that are symmetrical arranged 4 Φ 43mm in interval on it; It is Φ 45mm that anchor pole 2 the present embodiment are established 4, diameter altogether, wherein 2 each long 2560mm of long anchor pole, 2 each long 2510mm of short anchor pole, every anchor trend established the anchor door bolt 3 that a diameter is Φ 45mm, but in the time of fixedly 4 anchors door bolt between any two cross weld be integral, the screw thread that M42 * 3 are attacked in each anchor pole upper end, this thread section is fastenedly connected by bolt and pressing plate 1 after passing bolthole; During installation: the upper center hole in pressing plate 1 trapezoidal hole directly is placed in and descends center hole then to be stuck on the upper end-hole and cylinder of pit shaft mouth coupling head 4 (the present embodiment is connecting sleeve) in the plug type well opening device coupling head 4; When cement slurry anchor pole 2 and anchor thereof are fastened with a bolt or latch and can effectively well for storage be carried out axial restraint after 3 the earth are solidified into one, even long-term also use not can affect its well cementation effect because of bolt looseness or surface of contact corrosion; The present embodiment can be resisted the above impulse force of 500KN.
Embodiment 2: the present embodiment take with adopt upper and lower flange as the high pressure underground gas well of wellhead assembly coupling head supporting with reinforcing device. as example, mineshaft diameter, gas storage pressure, gas storage well depth are identical with embodiment 1; It is the steel plate of Φ 600mm that pressing plate 1 adopts thick 55mm, diameter, in the trapezoidal hole: upper center-hole diameter is Φ 286mm, axial high 40mm, lower center-hole diameter is Φ 442mm, axial high 15mm, and 90 ° at interval is symmetrical arranged the bolthole that is connected with anchor pole 2 of 4 Φ 43mm and the flange clamping bolt trepanning of 12 Φ 64mm on it; The set-up mode of all the other anchor poles 2, anchor door bolt 3 is also all identical with embodiment 1.Upper center hole when the present embodiment is installed in pressing plate 1 trapezoidal hole and flange clamping bolt trepanning directly are placed in as lower center hole on the wellhead assembly upper flange of wellhead assembly coupling head 4 and each flange clamping bolt and then are stuck on the upper ring surface and cylinder thereof of wellhead assembly upper flange; The present embodiment also can be resisted the above impulse force of 500KN.
Claims (3)
1. high pressure underground gas well reinforcing device., comprise gas storage well Axial Mounting Part and the anchor pole that is attached thereto, be located at the anchor door bolt of anchor pole lower end, it is characterized in that centered by the gas storage well Axial Mounting Part with trapezoidal hole the integrated type pressing plate, also be provided with one group as the bolthole that is connected with anchor pole at the pressing plate periphery; Each anchor pole upper end is fixedly connected with pressing plate by bolthole, and each anchor is fastened with a bolt or latch then and the mutual vertical one that is fixed in anchor pole lower end.
2. by the described high pressure underground gas well reinforcing device. of claim 1, the integrated type pressing plate that it is characterized in that described center band trapezoidal hole, when wellhead assembly adopts upper and lower flange connect, on pressing plate, also be respectively equipped with the clamping bolt trepanning corresponding to upper and lower flange clamping bolt position.
3. by the described high pressure underground gas well reinforcing device. of claim 1, it is characterized in that describedly also being provided with one group as the bolthole that is connected with anchor pole at the pressing plate periphery, bolthole is that 2-8 is individual; Supporting anchor pole also should be the 2-8 root mutually with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220372811 CN202769272U (en) | 2012-07-31 | 2012-07-31 | Reinforcing device for high-pressure underground gas storage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220372811 CN202769272U (en) | 2012-07-31 | 2012-07-31 | Reinforcing device for high-pressure underground gas storage well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202769272U true CN202769272U (en) | 2013-03-06 |
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ID=47775847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220372811 Withdrawn - After Issue CN202769272U (en) | 2012-07-31 | 2012-07-31 | Reinforcing device for high-pressure underground gas storage well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202769272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797973A (en) * | 2012-07-31 | 2012-11-28 | 自贡力源科技有限公司 | Reinforcement device for high-pressure underground gas storage well |
-
2012
- 2012-07-31 CN CN 201220372811 patent/CN202769272U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797973A (en) * | 2012-07-31 | 2012-11-28 | 自贡力源科技有限公司 | Reinforcement device for high-pressure underground gas storage well |
| CN102797973B (en) * | 2012-07-31 | 2014-11-19 | 自贡力源科技有限公司 | Reinforcement device for high-pressure underground gas storage well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20141119 |
|
| RGAV | Abandon patent right to avoid regrant |