CN101225741A - Method and apparatus for building whole borehole shrunkin underground gas-storing well - Google Patents
Method and apparatus for building whole borehole shrunkin underground gas-storing well Download PDFInfo
- Publication number
- CN101225741A CN101225741A CNA2008100086702A CN200810008670A CN101225741A CN 101225741 A CN101225741 A CN 101225741A CN A2008100086702 A CNA2008100086702 A CN A2008100086702A CN 200810008670 A CN200810008670 A CN 200810008670A CN 101225741 A CN101225741 A CN 101225741A
- Authority
- CN
- China
- Prior art keywords
- pit shaft
- well
- shaft
- mud
- gas storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a well construction method and device for integral shaft press-in underground gas storage well; wherein, mud protection wall is adopted to drill vertically and downwards; the integral shaft and the mud-jacking pipe are pressed into the underground hole by specific pressing-shaft device; cement slurry is pressed and injected from the hole bottom through the mud-jacking pipe to replace the protective mud in the hole; the cementing is processed by the solidification of cement slurry; the pressing-shaft device is gantry shape; the integral shaft is arranged under the pressurizing beam; the pressurizing beam is arranged between the gantry slide ways; the steel wire of pressurizing hoist drives the pressurizing beam move downwards to press the shaft through the pressurizing beam pulley block; the steel wire of lifting hoist raises the pressurizing beam for reset through the pulley block on top part of the gantry; the diameter of the shaft of the gas storage well is over 3m, the length of the shaft of the gas storage well is 50m. The well construction method and device for integral shaft press-in underground gas storage well has the advantages of high speed of well construction, low cost, convenient detection before installation, resolving the leakage problem caused by a plurality of joints of multi-section shafts, adopting high intensity steel wire and high intensity fiber for winding reinforcement, raising the shaft compressive strength, enlarging the gas storage capacity, and increasing service life.
Description
Technical field
The present invention relates to a kind of well building method of well for storage, is a kind of one to be pressed in the earth drilling with fixing method of cement paste and used isolated plant through withstand voltage and whole pit shaft leak-testing specifically.
Background technology
Natural gas vertically imbedded the not only safe floor space of underground storage with the steel pit shaft but also be a good method for a short time.The present domestic well for storage of building mostly is deep-well, and well depth has reached 100-200m, and mineshaft diameter is φ 177.80-φ 273.10mm (seeing existing industry standard SY/T6535-2002).The mineshaft diameter that obvious above data provide is too less than normal.The pit shaft of minor diameter such as desire strengthen gas-storing capacity and can only bore desperately deeply, and up to a hundred meters deep hole is most of just not to be brill but bore in the rock stratum in soil layer, and the difficulty of boring and cost must remain high.As everyone knows: the volume of hydrostatic column is directly proportional with its length, with square being directly proportional of its diameter.The diameter that increases the gas storage pit shaft in other words slightly just can reduce the length of pit shaft greatly, thereby the difficulty and the shaft building cost that reduce boring enlarge the gas storage capacity simultaneously again.
Based on above consideration, application for a patent for invention " a kind of job practices of well for storage of high pressure gas and device " (application number 2006101671615) proposes an improvement project: adopt long-spiral drilling machine boring, cement paste dado, use special-purpose pressure cylinder device that the monolithic pit shaft is pressed in the hole in the cement paste, solidify up to cement paste and finish well cementation.This method makes mineshaft diameter be broken through the restriction of φ 177.80-φ 273.10mm, and boring is carried out in soil layer all the time, and boring difficulty and cost all reduce significantly and gas-storing capacity increases considerably.And whole pit shaft can carry out resistance test, the link of thoroughly stopping a leak before underground laying.
But the method still has weak point: compressed water slurry retaining wall when adopting long-spiral drilling machine boring to carry brill, though the diameter degree of depth of the fast boring of speed all is restricted: from present case history: the long-spiral drilling machine bore diameter seldom surpasses φ 800mm; And drilling depth is subject to the very difficult 35m of surpassing of the height of rig column especially.If it can't be its boring with long-spiral drilling machine just that mineshaft diameter surpasses 1m.Therefore be necessary existing gas storage well well construction technology is continued to improve.
Summary of the invention
The technical problem that will solve required for the present invention is: break through the restriction of the long-spiral drilling machine bore diameter and the degree of depth, the boring when solving shaft building for the long pit shaft of monolithic major diameter, the lifting of whole pit shaft are laid and the cement slurry cementing problem.
The scheme that the present invention solves the problems of the technologies described above is: adopt mud off to hole downward vertically, use the pressure cylinder device that whole pit shaft is pressed in the hole together with madjack pipe, from base pressure cement injection displacement in hole is portalled, solidify well cementation with this cement paste behind the slurry coat method by madjack pipe.
Specifically carry out the shaft building construction of the long pit shaft of monolithic major diameter, must solve two problems:
The first is bored large diameter, deep borehole.No matter adopt static mud protecting wall to use rotary drilling rig boring now, still adopt the mud off of positive and negative circulation to use engineering driller boring, its aperture has all surpassed 3m, and hole depth is also considerably beyond 50m.Above boring method has all been broken through the pore-forming scope of long-spiral drilling machine, satisfies the requirement of the long pit shaft of major diameter to boring fully.
Its two be how will not only thick (diameter 1-3m) but also long (long) to 50m whole pit shaft put into mud-filled boring, overcome pit shaft when putting into suffered may arrive hundreds of tons buoyancy greatly.And then finish well cementation with remaining slurry coat method in the cement paste displacement hole.
Obviously, key problem in technology of the present invention just is that huge pit shaft is overcome buoyancy is pressed into boring.The present invention has designed a kind of special equipment " pressure cylinder device " for this reason.Its architectural feature and using method are passed through description of drawings.
Description of drawings
Fig. 1 is an activities schematic diagram of the present invention.Divided for four steps:
(a) mud off pore-forming (b) is pressed into pit shaft, (c) mud, (d) well cementation in the pressure injection cement paste displacement hole
Fig. 2 is that the pressurization hoist engine twines wiring diagram with the wire rope that promotes hoist engine on the key equipment pressure cylinder device of the present invention.
Fig. 3 is the structural representation of key equipment pressure cylinder device of the present invention.
Among the figure:
1. pressurization hoist engine, 2. pressurization beam assembly pulley, 3. pressurization beam, 4. portal frame top cross-bar, 5. the platform chassis assembly pulley 6. promotes hoist engine, 7. portal frame slideway, 8. pressurization beam sliding shoes, 9. pit shaft gland, 10. gas storage pit shaft, 11. counterweights, 12. platform chassis, 13. the slurry coat method in the boring, 14. aperture centring rings, 15. pit shaft guard rings, 16. madjack pipe, 17. cement pastes
The specific embodiment
We still need accompanying drawings shaft building process, as Fig. 1, shown in Figure 3:
(a) mud off pore-forming.Adopt static mud protecting wall when using rotary drilling rig, adopt positive and negative circulating mud retaining wall (the dried pore-forming of rotary drilling rig when not having underground water) when using engineering driller.The aperture should be than the external diameter of pit shaft big at least 100mm, guarantee that the outer cement protective layer thickness of pit shaft is not less than 50mm (then should be bigger when cementing the well with cement mortar).Hole depth then requires to determine according to pit shaft length and well cementation.
(b) be pressed into pit shaft.Whole pit shaft with steel before constructing requires to use high-tensile steel wires or high-intensity fiber to twine enhancing and process resistance test according to the pressure of planning to build gas storage well.During construction these pit shaft 10 levels are installed between two portal frame slideways 7 of the pressure cylinder device that lies in a horizontal plane in ground; its well head place, pit shaft 10 upper end is fixed on the pit shaft gland 9; but (backing plate protection between pit shaft and the guard ring is treated before the kill-job tube plate to be removed) clamped with the pit shaft guard ring 15 of folding in pit shaft 10 lower ends.As pit shaft long (for example near 50m), can be bundled in it on portal frame with several roads wire rope at the pit shaft middle part and with the wire rope tensioning.Treat that loosening tensioning bolt again after the pressure cylinder device is erect takes off wire rope.(portal frame is a trussed construction, get rop exercise do to climb up by artificial band safety belt finish) better as pit shaft rigidity, then needn't bundle with steel cable.
After pit shaft fixes, with crane the pressure cylinder device is lifted together with pit shaft and to be placed on the aperture that has been drilled to, aperture centring ring 14 is inserted in the hole, adjust pressure cylinder device orientation, place counterweight 11 with fork truck symmetry on the platform chassis 12 of pressure cylinder device.Pressure cylinder device portal frame must keep perpendicular to the ground.Loosen promoting hoist engine 6 gradually, even pit shaft deadweight its underpart is sunk in the hole.
1 pair of pit shaft 10 of starting pressurization hoist engine is exerted pressure, and pit shaft is continued to be pressed in the hole, and it is standby that stock tank is held in the slurry coat method inflow of extruding, and last suction fortune stock tank car is transported processing.Pit shaft is depressed into and stops pressurization in the hole behind the precalculated position.
A problem is arranged in the above process: when borehole size is little (for example diameter 1m with interior length 50m in, deadweight is less than 10t, during the about 47t of suffered buoyancy), the pressure cylinder device needn't add very heavy counterweight and just can directly pit shaft be compressed into.But (this moment, deadweight had 30t approximately for diameter 3m for example, length 50m, extruded the about 350m3 of mud volume after being pressed into boring when borehole size is big.If mud balance gets 1.2, the suffered buoyancy of pit shaft has 420t approximately), the pressurization beam of pressure cylinder device just must have hundreds of tons downforce, and counterweight also will reach hundreds of tons.Such pressure cylinder device all too heaviness.For this reason, we can fresh water pouring be to increase its weight in pit shaft when pit shaft presses down, and the weight of limit flanging filling and water filling should surpass the weight of extruding mud.Put into submersible pump after the well cementation again clear water is pumped the taking-up submersible pump.The clear water that remains in the pit shaft uses when beginning to inflate and can be extruded (gas storage well in use can produce ponding, and gutter must be set) by the gutter that is arranged in the pit shaft by high pressure gas at gas storage well.The suffered buoyancy of pit shaft increases weight with just answer fresh water pouring when the method for double differences surpasses 50t.
(c) pressure injection cement paste.The madjack pipe 16 of said pressure injection cement paste is attached on the pit shaft among the present invention.Should be provided with many and make grout outlet border under pit shaft uniform.Observe aperture mud color after being pressed into cement paste, all mud is all replaced by cement paste in the hole.Also can replace cement paste to replace slurry coat method (madjack pipe is changed to the mortar pipe) with cement mortar.
(d) well cementation.After treating that cement paste solidifies, remove the pressure cylinder device.(remove counterweight earlier, remove portal frame and underframe again and be used for next gas storage well.) when using cement mortar, its effect of displacement mud is better than cement paste.But the mortar pipe should reclaim, and the cement paste pipe does not generally reclaim.
By above process as can be known: must earlier the pit shaft of tens of tons of weights be sling together with the pressure cylinder device during the invention process and accurately be placed on drilling orifice, could in the hole, be pressed into pit shaft with the pressure cylinder device.Should select what equipment just can finish this slinging work? the about 30t of the pit shaft of a long 50m of diameter 3m deadweight, together with the pressure cylinder device gross weight that does not add counterweight 40t nearly, the not very very big but sling height of weight is above 50m.This just is not that the medium-sized crane institute of general 50t level is competent, can only use up to a hundred tonnes of goliaths.Universal goliath is very expensive equipment, only is that the transport cost in up to a hundred tons of mechanical transfer building sites is just very considerable.In order to reduce equipment investment and shaft building cost, our specialized designs a kind of " electric cater-pillar crane " (ZL2006201673480), can determine the stability of its ground connection size when satisfying the lifting pit shaft by sling height.Can design the special electric crawler crane of little tonnage specially by the sling height that surpasses 50m.The special equipment of (the pressure cylinder device of loading onto pit shaft in the practical operation hangs top cross-bar with electric cater-pillar crane and slowly props up, though the sling height height is not really heavy with platform chassis one side joint ground) this cheapness makes the present invention be able to low-cost enforcement.
Introduce the operating principle and the structure of pressure cylinder device below in conjunction with Fig. 3.The pressure cylinder device is the portal frame structure of a truss-like, is made of three parts:
First platform chassis part.Platform chassis 12 is to be formed by connecting by two longerons and some crossbeams that channel-section steel is welded into.Can be divided into removable several sections and add truss in both sides and strengthen rigidity when longeron is longer.1, one lifting hoist engine 6 of a pressurization hoist engine is installed on it, and symmetry is placed some counterweights 11, and the middle part symmetry is installed two row triangular column truss and two groups of platform chassis assembly pulleys 5, and aperture centring ring 14 is installed in the centre.
It two is portal frame parts.Each row that is two row symmetries are made rib by a seamless steel pipe (or channel-section steel) as slideway 7 and two angle steel, the triangular column truss that some angle steel are welded into as diagonal brace.Long 6m of every joint or 12m, one couples together with bolt successively and is installed in symmetrically on the platform chassis 12.With top cross-bar 4 two row truss are connected and composed a shape topmost.Portal frame slideway 7 is positioned at the portal frame inboard, has pressurization beam 3 vertically to move on portal frame therebetween.
Its three, pressurization beam part.Be welded into by channel-section steel, the sliding shoes 8 that can slide on slideway 7 is installed.Assembly pulley 2 is equipped with at the two ends of pressurization beam.The center of pressurization beam 3 is equipped with pit shaft gland 9.The pit shaft gland installs and fixes the collar (do not drawn by figure breadth restriction collar) of pit shaft 10 for 9 times.
The wire rope of pressurization hoist engine 1 is walked around on assembly pulley 5 on the platform chassis 12 and the pressurization beam 3 two ends assembly pulley 2 and is forced pressurization beam 3 to move down along slideway 7 pit shaft is exerted pressure.The assembly pulley traction pressurization beam 3 that the wire rope of lifting hoist engine 6 is walked around on the portal frame top cross-bar 4 resets along moving on the slideway 7.
Pressurization hoist engine on the pressure cylinder device can adopt the 5t hoist engine, can apply 50t pressure to pit shaft when assembly pulley adopts 10 multiplying powers.Promote hoist engine and can adopt the 1.5t hoist engine.Such pressure cylinder device is simple in structure, manufacturing cost is very low, but enough finishes the work that the long 50m of diameter 1m is directly exerted pressure with interior pit shaft.If be used, also enough be competent at the long 50m of diameter 3m with the work of exerting pressure of interior pit shaft with method from the clear water weightening finish to pit shaft that annotate.
In sum, its mineshaft diameter of gas storage well that the present invention builds surpasses 3m pit shaft length and reaches 50m. Compare with existing well construction technology, gas-storing capacity has been increased hundred times incessantly. And the faster cost of speed of application Lower. Carry out the leakage link that resistance test has been eliminated the multistage pit shaft before whole pit shaft is convenient to install, have Be beneficial to and adopt high-tensile steel wires or high-intensity fiber to twine to strengthen, further improve the pit shaft intensity of exerting pressure and increase The gas storage capacity increases the service life. The present invention is a technological innovation with practical value.
Claims (3)
1. the well building method and the device of the forced well for storage of whole pit shaft, it is characterized in that: adopt mud off to underground vertical drilling, use the pressure cylinder device that whole pit shaft is pressed in the hole together with madjack pipe, by madjack pipe slurry coat method from hole base pressure cement injection (or cement mortar) displacement is portalled, solidify well cementation with cement paste (or cement mortar).
2. the well building method and the device of the forced well for storage of a kind of whole pit shaft as claimed in claim 1, it is characterized in that: said pressure cylinder device is a portal frame shape structure, portal frame has two slideways, the pressurization beam is equipped with in the centre, the pressurization beam is installed down the pit shaft both sides and sliding shoes constraint pressurization beam is housed is vertically moved on the slideway of portal frame, the wire rope of pressurization hoist engine is walked around platform chassis and pressurization beam two ends assembly pulley and is forced the pressurization beam to move down along slideway pit shaft is exerted pressure, and the wire rope that promotes hoist engine is walked around portal frame top cross-bar top sheave group traction pressurization beam and resetted along moving on the slideway.
3. as the well building method and the device of the forced well for storage of claims 1 described a kind of whole pit shaft, it is characterized in that: said whole pit shaft outer wall has high-tensile steel wires or other high strength fibre to twine enhancing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100086702A CN101225741B (en) | 2008-01-30 | 2008-01-30 | Method for building whole borehole shrunkin underground gas-storing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100086702A CN101225741B (en) | 2008-01-30 | 2008-01-30 | Method for building whole borehole shrunkin underground gas-storing well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101225741A true CN101225741A (en) | 2008-07-23 |
| CN101225741B CN101225741B (en) | 2011-03-30 |
Family
ID=39857919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100086702A Expired - Fee Related CN101225741B (en) | 2008-01-30 | 2008-01-30 | Method for building whole borehole shrunkin underground gas-storing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101225741B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701461B (en) * | 2009-10-29 | 2011-11-30 | 上海广联建设发展有限公司 | Method for constructing energy-saving underground tube structure |
| CN105386768A (en) * | 2015-11-16 | 2016-03-09 | 内蒙古福城矿业有限公司 | Connection structure for shaft and shaft station |
| CN109323121A (en) * | 2018-11-02 | 2019-02-12 | 中海石油气电集团有限责任公司 | A kind of full underground LNG storage tank rising ejection device equipped with top air inlet |
| CN112303332A (en) * | 2020-10-09 | 2021-02-02 | 中铁十局集团第八工程有限公司 | Pipe work apparatus and method for pipe gallery |
-
2008
- 2008-01-30 CN CN2008100086702A patent/CN101225741B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701461B (en) * | 2009-10-29 | 2011-11-30 | 上海广联建设发展有限公司 | Method for constructing energy-saving underground tube structure |
| CN105386768A (en) * | 2015-11-16 | 2016-03-09 | 内蒙古福城矿业有限公司 | Connection structure for shaft and shaft station |
| CN109323121A (en) * | 2018-11-02 | 2019-02-12 | 中海石油气电集团有限责任公司 | A kind of full underground LNG storage tank rising ejection device equipped with top air inlet |
| CN112303332A (en) * | 2020-10-09 | 2021-02-02 | 中铁十局集团第八工程有限公司 | Pipe work apparatus and method for pipe gallery |
| CN112303332B (en) * | 2020-10-09 | 2022-06-24 | 中铁十局集团第八工程有限公司 | Pipe work apparatus and method for pipe gallery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101225741B (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110397076B (en) | Construction method of deep-water large-diameter cast-in-place pile | |
| US5704427A (en) | Portable well service rig | |
| CN110894722B (en) | Construction method of cast-in-situ bored pile | |
| CN103669351A (en) | Full-stroke hole-leading hydraulic static pile driver | |
| CN101225741B (en) | Method for building whole borehole shrunkin underground gas-storing well | |
| CN110685433A (en) | Chimney construction device and construction method applying hydraulic lifting and rollover technology | |
| CN111236215A (en) | Rock-socketed construction process of large-diameter steel pipe inclined pile of offshore wind power high-rise pile cap foundation | |
| CN110593255A (en) | Full-casing secant pile construction method suitable for sandy gravel soil layer | |
| CN107142954B (en) | Steel hanging box lifting system for integral lifting and lifting method thereof | |
| CN109024660B (en) | Pile foundation dismantling method for offshore foundation and offshore foundation dismantling method | |
| CN101196115B (en) | Construction method for high pressure underground gas storing well | |
| CN108331429A (en) | A kind of tubulose highrise steel structure installation method | |
| CN111749259A (en) | Equipment and construction method suitable for rock-socketed construction of offshore wind power high-rise pile cap foundation | |
| CN105800477A (en) | Tunnel steel structure hoisting system using underground excavation workshop reverse process | |
| CN203486787U (en) | Integral lifting device for cabinet top of Wiggins coal gas cabinet | |
| CN214614152U (en) | Modular pipe jacking well construction equipment | |
| CN205100216U (en) | Dismantled and assembled composite pile erects heavy formula floating pile driver | |
| CN210737541U (en) | Positioning device for lowering protective cylinder of underwater cast-in-place pile | |
| CN113585860A (en) | Device and method for mounting and dismounting double-arm holding pole | |
| CN211446903U (en) | Drilling, guiding and hammering integrated machine in PHC (prestressed high-strength concrete) pipe pile | |
| CN209758880U (en) | self-propelled superelevation super large area steel reinforcement cage lifting equipment | |
| CN103132508A (en) | Pile-filling machine | |
| CN206986897U (en) | A kind of tethered sliding formula toe slab grouting system | |
| CN112502178A (en) | Modular pipe jacking well construction equipment and use method | |
| CN201241705Y (en) | Barrel pressing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Wujiang Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Wujiang Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20170130 |