CN102588727B - Molding method of multilayer gas storage well cylinder body for high-pressure fuel gas underground gas storage well - Google Patents
Molding method of multilayer gas storage well cylinder body for high-pressure fuel gas underground gas storage well Download PDFInfo
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- CN102588727B CN102588727B CN201210056315.9A CN201210056315A CN102588727B CN 102588727 B CN102588727 B CN 102588727B CN 201210056315 A CN201210056315 A CN 201210056315A CN 102588727 B CN102588727 B CN 102588727B
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Abstract
The invention belongs to a multilayer gas storage well cylinder body for a high-pressure fuel gas underground gas storage well and a molding method thereof. The gas storage well cylinder body comprises an inner layer gas storage well cylinder body, a cement protection reinforced layer and an outer cylinder body. The molding method comprises the following steps: drilling a basic well; preparing retarding cement slurry and fixing the outer cylinder body; lowering the gas storage cylinder body; filling the cement protection reinforced layer; and molding the multilayer gas storage well cylinder body. In the multilayer gas storage well cylinder body, the cement protection reinforced layer which can be tightly packed on the outer surface of the gas storage cylinder body and fastens the gas storage cylinder body and the outer cylinder body into a whole is additionally arranged on the basis of a traditional two-pipe underground gas storage well, therefore, corrosion to the gas storage cylinder body by underground water can be completely isolated in the use process, the well fixing effect is effectively improved, frequent deformation amplitude of the gas storage cylinder body due to alternating load is greatly reduced, the safety and the reliability of gas storage and operation of the underground gas storage well are ensured, the service life of the gas storage well is prolonged, breakage or explosion accidents of a well cylinder of the gas storage well are prevented in the use process, and the like.
Description
Technical field
The invention belongs to the forming method of underground gas storage well of high-pressure fuel gas multilayer gas storage well cylindrical shell and this pit shaft body, particularly containing gas receiver layer, cement, protect the pit shaft body for fuel under high pressure gas underground gas storage of reinforced layer and outer cylinder body protective layer, and the forming method of this pit shaft body; Adopt underground gas storage well of high-pressure fuel gas of the present invention multilayer gas storage well cylindrical shell to store high-pressure fuel gas, can guarantee that gas receiver layer outer surface is evenly coated and is tightened to one with outer cylinder body by cement, thereby can be in the intensity that strengthens gas storage cylindrical shell, effectively avoid gas storage cylindrical shell to be corroded by underground water and harmful gas, guarantee well for storage long-term safety, reliable operation.
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.This type of gas storage well depth is generally 50～200m, and the theoretical gap between pit shaft and the borehole wall is generally less than 3.0cm, and the basic well perpendicularity that in addition adopts geological drilling to offer is poor, the borehole wall is uneven, and gas storage pit shaft is again rigidity; And tradition adopts the gas storage well of single cylinder because mud in well cementing process can not wrap up pit shaft external surface completely, in addition the structural imperfection on stratum also can cause pouring into the improper dehydration of cement slurry and the leakage in basic well, finally causes the cement layer of parcel pit shaft to occur cavity and gap.Once the cement layer defectiveness of parcel pit shaft, underground water will make pit shaft external surface generation local etching or/and gap is penetrated into pit shaft external surface by its cavity.Notification number is CN2281418y, name is called < < well for storage of high pressure gas > >, and notification number is CN1384308A, fixation method > > and notification number that name is called < < underground gas storage well shaft are CN1952466A, name is called the technology that the patent documentation of < < underground gas storage well shaft and fixation method > > thereof records and belongs to the gas storage well bore of this type of single cylinder and the fixation method of this type of gas storage well cylindrical shell.Adopt the gas storage well bore of above-mentioned single cylinder, no matter adopt the former to be in the milk from the top down, or the grouting from bottom to top after adopting after both improvement, all can not in well cementing process, make cement slurry wrap up the outer surface of pit shaft body completely, thereby it is loosening in use still to exist pit shaft easily to occur, corrosion, finally cause the upper and lower play of gas storage well, rotate, the in the situation that there is fracture in or pit shaft large in variation of ambient temperature particularly, the pit shaft ground of can popping out when serious, both affected normal use, affect again working life, also will equipment and staff's safety be caused to the disadvantages such as potential threat.For the existing disadvantage of above-mentioned technology, at notification number, be that the patent documentation that CN200940768Y, name are called < < Double pipe underground natural gas high pressure gas storage well > > discloses a kind of gas storage well well body being comprised of inside and outside two-layer sleeve pipe, between its inner layer sleeve and outer layer sleeve, by inside and outside well fixed bolt, connected; The fixation method of this gas storage well bore is: get out first over the ground in well (boring basic well), outer conductor lower going-into-well, subsequently by the outside pressure injection oil-well cement of outer duct slurries, oil-well cement slurries along the outer wall of outer sleeve from lower to upper until turbulent flow return out behind ground, cement in cleaning outer duct, descend again inner sleeve, fixing internal and external layer conduit.Although the pit shaft body of this technology has adopted inside and outside two-layer sleeve pipe, and fix by outer layer sleeve and basic well, but due between outer layer sleeve and basic well, still adopt conventional method fix thereby outer layer sleeve still exist service time long after the perishable perforation of pipe (cylinder) body, once bore a hole underground water and harmful gas just can be penetrated in the cavity between inner layer sleeve and outer layer sleeve, directly inner layer sleeve (being gas storage pit shaft) be worked the mischief, in addition, internal and external layer conduit adopts detachably fixing, its sealing effect is also poor, rainwater and surface water are also easily seeped in the space between two sleeve pipe cylindrical shells, directly inner layer sleeve are worked the mischief, and because its inner layer sleeve (gas storage cylindrical shell) is in the unsettled cavity that is hung in outer layer sleeve, deeply reach the tube wall of the inner layer sleeve about 100m without the constraint of any object, thereby rising with loads change inner layer sleeve (gas storage cylindrical shell) in use, contracting amplitude is also larger, the impact that in use the suffered alternate load of inner layer sleeve is compared traditional single cylinder gas storage pit shaft to the impact of gas storage cylindrical shell is larger, also more easily there is fatigue ruption in gas storage cylindrical shell, particularly the connection screw thread of gas receiver connecting sleeve part more easily lost efficacy, there is gas leakage in fuel etc., although the working life of the gas storage well that this technology can more traditional employing single cylinder is relatively long, but still be difficult to the be up to state standards quality of defined and the requirement of service life, therefore still there is well cementation effect and poor reliability, can not isolate the corrosion to gas storage well cylindrical shell such as underground water completely in above-mentioned patented technology, the quality of defined and the requirement of service life are difficult to be up to state standards, and with its inner layer sleeve of load change (gas storage cylindrical shell), easily there is fatigue ruption in using process, thereby in use still there is the potential safety hazard that gas leakage in fuel, gas storage well cylindrical shell occur occurs fracture or blast in gas storage well bore, and the disadvantage such as working life is short.
Summary of the invention
The object of the invention is the disadvantage existing for above-mentioned background technology, research and design a kind of underground gas storage well of high-pressure fuel gas multilayer gas storage well cylindrical shell and forming method thereof; The defect and the potential safety hazard that to overcome background technique, in use exist, reach effective raising well cementation effect, guarantee the gas storage of well for storage and the Security of operation, reliability, extend its working life, effectively prevent that gas storage well cylindrical shell is in use by objects such as the generations of the fracture of underground water burn into pit shaft or explosive accident.
The solution of multilayer gas storage well cylindrical shell of the present invention is for existing disadvantage in Double pipe underground natural gas high pressure gas storage well using process, between internal layer gas receiver and outer cylinder body, set up a cement protection reinforced layer, this protection reinforced layer not only closely wrapped up gas receiver external surface, but also internal layer gas receiver and outer cylinder body are fastenedly connected integral, to internal layer gas receiver body play humidification, to reduce the adverse effect of alternate load to gas storage cylindrical shell in using process, in addition, because internal layer gas receiver, cement protection reinforced layer and outer cylinder body are fastening all-in-one-pieces, there is not cavity or space in centre yet, not only surface water is difficult to immerse, even outer cylinder body due to well cementation defect in using process after this because of underground water and harmful gas to its corrosion cause perforation wait, due to gas receiver external surface also have one deck by its closely cement of parcel protect reinforced layer, thereby still can effectively protect gas storage cylindrical shell to be without prejudice, to guarantee the working life of high-pressure gas storage well, in order to ensure cement protection reinforced layer, both gas receiver external surface was closely wrapped up, again internal layer gas receiver and outer cylinder body are fastenedly connected to all-in-one-piece effect, the fixation method of multilayer gas storage well cylindrical shell of the present invention is: first adopt geological drilling to offer basic well, and the extended slurry preparing is injected to the 40-55% to basic well volume in basic well, again bottom is provided with under the outer cylinder body of sealing head in basic well, in the time of below outer cylinder body is lowered into extended slurry face to outer cylinder body built-in enter mass, to overcome the buoyancy of extended slurry, sink to position and extended slurry overflows outer cylinder body upper oral part only to outer cylinder body, after slow setting cement is solidified into one outer cylinder body and basic well, take out mass, then cylinder body bottom end socket is provided with to grouting process hole, and being interval with the gas storage cylindrical shell of centralizer, barrel outer surface is lowered in outer cylinder body, after putting in place, adopt Barrel hoisting clamping plate that gas storage cylindrical shell is gripped, again grout pipe is inserted in gas storage cylindrical shell, its lower end is communicated with and starts grouting pump from bottom to top with the grouting process hole of gas storage cylinder body bottom, to grout injection between gas storage cylindrical shell and outer cylinder body, after overflowing ground, cement slurry stops perfusion, then extract grout pipe out and by the bayonet socket of its lower end, gas storage cylindrical shell grouting process hole plug screwed in this auxiliary hole its sealing, finally extract grout pipe out, to cement slurry, solidify and form protection reinforced layer.Can be as requested after the fixing completion of multilayer gas storage well cylindrical shell of the present invention moulding at gas storage well cylindrical shell upper oral part, load onto the wellhead assembly of requirement, just can be used for storing high-pressure fuel gas.Thereby multilayer gas storage well cylindrical shell of the present invention comprises that appearance wears the internal layer gas storage cylindrical shell of centralizer and bottom and be provided with the outer cylinder body of sealing head, key is to be also provided with between internal layer gas storage cylindrical shell and outer cylinder body the cement protection reinforced layer that internal layer gas receiver external surface is wrapped up completely, is provided with grouting process hole and plug thereof, cylinder body bottom is provided with sealing head outside on the bottom bulkhead of gas storage cylindrical shell; It is integral that internal layer gas storage cylindrical shell and outer cylinder body protect reinforced layer to be fastenedly connected by cement.This multilayer gas storage well cylindrical shell is tightened to one and is used by cementing concrete and (adopting geological drilling to offer) basic well.
The wall thickness of above-mentioned cement protection reinforced layer is that 30～50mm, bottom are thick identical to the distance of outer cylinder body inner bottom surface with gas storage cylindrical shell bottom.
The forming method of multilayer gas storage well cylindrical shell for above-mentioned underground gas storage well of high-pressure fuel gas, its forming method is:
Steps A. bore basic well: first by oil, gas drilling technology and program, bore basic well;
Step B. preparation extended slurry fixed outer cylinder body: by the 40-55% preparation outer cylinder body of basic well volume and the basic borehole wall, be connected and fixed with extended slurry, the weight percentage of cement slurry is: cement: water: filtrate loss reduction additive: retarding agent: water reducing agent=1:0.6～0.7:0.012～0.018:0.0007～0.0010:0.012～0.018, after stirring, the extended slurry preparing is injected to the 40-55% to basic well volume in basic well, the fixation method of underground gas storage well shaft arrives bottom in basic well under the outer cylinder body with sealing head routinely again, below being lowered into extended slurry face, outer cylinder body inserts mass in backward outer cylinder body, to overcome the buoyancy of extended slurry, sink to position and extended slurry overflows outer cylinder body upper oral part (ground) only to outer cylinder body, after slow setting cement is solidified into one outer cylinder body and basic well, take out mass,
Gas storage cylindrical shell under step C.: still routinely the fixation method of underground gas storage well shaft to being lowered to that bottom is provided with grouting process hole in the outer cylinder body after step B is fixing and outer surface interval arranges the gas storage cylindrical shell of centralizer, after putting in place under gas storage cylindrical shell, adopt Barrel hoisting clamping plate that gas storage cylindrical shell is gripped;
The moulding of step D. cement injection protection reinforced layer and multilayer gas storage well cylindrical shell: grouting intubate is inserted after step C adopts that hanging clamp plate holder is held in the gas storage cylindrical shell fixing, its lower end is communicated with the grouting process hole of gas storage cylinder body bottom and screws, and startup grouting pump, will to be mixed with proportion be 1.6～1.9g/cm
3cement slurry through the grouting process hole of gas storage cylinder body bottom, pour into from bottom to top in the annular space between gas storage cylindrical shell and outer cylinder body, when cement slurry overflows behind ground, closes grouting pump, the high pressure joint of then opening grouting intubate upper end packs pigging plug in grouting intubate into, connect after joint, immediately to pump in intubate clear water by plug to pressing down to remove the cement slurry in grouting intubate and plug position, grouting process hole, when uprushing, pump pressure closes grouting pump, until cement slurry, solidify and form after protection reinforced layer, extract grouting intubate and pigging plug thereof out, recycling grouting intubate lower end thread head screws in grouting process hole plug in grouting process hole, by its sealing, obtain by gas storage cylindrical shell, the multilayer gas storage well cylindrical shell of protection reinforced layer and outer cylinder body composition, again after pressure testing is qualified, .
Above-mentioned described in step B below outer cylinder body is lowered into extended slurry face after to inserting mass in outer cylinder body, its mass is metallic rod or metallic rod+water.And in extended slurry composition described in step B: filtrate loss reduction additive is carboxymethyl cellulose or sodium polyacrylate, sulfonated-pheno-formoldehyde resin, described retarding agent is gluconic acid sodium salt or high sugared lignosulfonates, citric acid, and described water reducing agent is naphthalene sulphonate formaldehyde mixture or lignosulfonates, polycarboxylate.And between each joint cylindrical shell in fixed outer cylinder body, outer cylinder body described in step B, adopt welding or bonding, riveted joint, spiral marking connection mode fixed connection.The slow setting time at extended slurry described in step B and step C is not less than 10 hours.
Multilayer gas storage well cylindrical shell pressure testing after the above is fixing detect qualified after, at the upper oral part of this multilayer gas storage well cylindrical shell, load onto corresponding wellhead assembly on demand, can be used for CNG (compressed natural gas) supply station and gas peak regulation station and store high-pressure natural gas.
The present invention is owing to setting up a cement protection reinforced layer between the internal layer gas receiver at background technique Double pipe underground natural gas high pressure gas storage well and outer cylinder body, this protection reinforced layer both played humidification to internal layer gas receiver body, again gas receiver external surface is closely wrapped up and internal layer gas storage cylindrical shell and outer cylinder body are fastenedly connected integral, not only surface water is difficult to be immersed in gas receiver surface, even outer cylinder body due to well cementation defect in using process after this because underground water and harmful gas cause perforation etc. to its corrosion, because also having the cement that one deck closely wraps up it, gas receiver external surface protects reinforced layer, thereby still can effectively protect gas storage cylindrical shell to be without prejudice, in order to ensure set up cement protection reinforced layer, gas storage cylindrical shell is played to protection and reinforing function, the present invention by under outer cylinder body to after fixing in basic well and by itself and basic well, to insert downwards in outer cylinder body with the gas storage cylindrical shell in centralizer and grouting process hole again, then through the grouting process hole of gas storage cylindrical shell bottom, cement slurry is poured in the annular space between gas storage cylindrical shell and outer cylinder body from bottom to top, in addition between two cylindrical shells, under the constraint of centralizer, its spacing is basically identical, thereby can guarantee that cement slurry closely wraps up gas receiver external surface and is fastenedly connected integral with outer cylinder body, gas storage cylindrical shell is played to protection and reinforing function.Thereby the present invention has and in use can isolate underground water completely the burn into of gas storage cylindrical shell has effectively been improved to well cementation effect, greatly reduced the amplitude of the periodically deforming (rise, contract) causing because of stress alternation of gas storage cylindrical shell, guaranteed the gas storage of well for storage and the Security of operation, reliability, not only extended gas storage well working life, but also prevented that gas storage well bore from use rupturing or the feature such as the generation of explosive accident.
Accompanying drawing explanation
Fig. 1. be multilayer gas storage well tube structure schematic diagram of the present invention;
Fig. 2. for multilayer gas storage well cylindrical shell of the present invention is connected with wellhead assembly and uses view, double dot dash line part in figure middle and upper part is wellhead assembly;
Fig. 3. for underlying outer cylinder body in the inventive method and embodiment and with basic well, be connected and fixed schematic diagram;
Fig. 4. for reinforced layer moulding schematic flow sheet is fixed and protected to gas storage cylindrical shell in the inventive method and embodiment.
In figure: 1, basis well, 2, be connected and fixed layer, 3-1, outer cylinder body, 3-1.1, outer cylinder body centralizer, 3-1.2, outer cylinder body sealing head, 3-2, protection reinforced layer, 3-3, gas storage cylindrical shell, 3-3.1, gas receiver connecting sleeve, 3-3.2, gas storage cylindrical shell centralizer, 3-3.3, gas storage cylindrical shell end socket, 3-3.4, gas storage cylindrical shell plug, 4, well head backing plate, 5, Barrel hoisting clamping plate, 6, hanger, 7, (counterweight is used) metallic rod, 7-1, metallic rod centralizer, 8, grouting intubate supported flange, 9, grouting intubate, 9-1, pigging plug, 9-2, grouting intubate centralizer, 10, grouting pump, 11-1, pond, 11-2, cement stock tank, 12, wellhead assembly.
Embodiment
The present embodiment take CNG gas station and city gas peak regulation station, storage and distribution station with rock gas well for storage multilayer gas storage well cylindrical shell as example: outer cylinder body 3-1 specification is as Φ 323.9 × 6mm, and it is Φ 244.48mm (9 that gas storage cylindrical shell 3-3 adopts diameter
5/
8the sleeve pipe of "), effective gas storage part are deeply for 100m, gas storage pressure are 25Mpa.The moulding fixation method of this multilayer gas storage well cylindrical shell is:
Steps A. bore basic well 1: by oil, gas drilling technology and program drill diameter, be first Φ 400mm, the basic well 1 that is deeply not less than 105m, the about 15.84m of basic well cavity volume
3;
Step B. preparation extended slurry fixed outer cylinder body 3-1: after the cement 7746Kg that is P.O42.5R by label, carboxymethyl cellulose 116.2Kg, gluconic acid sodium salt 116.2Kg, naphthalene sulphonate formaldehyde mixture 7Kg and water 5030Kg mixing and stirring, (approximately obtain 7.5m
3extended slurry), inject in basic well the approximately 12 hours slow setting time of extended slurry that present embodiment is joined; The fixation method of underground gas storage well shaft arrives bottom in basic well 1 immediately under the outer cylinder body 3-1 with sealing head routinely again, after outer cylinder body 3-1 is lowered into below extended slurry face, to inserting external diameter in outer cylinder body 1, be Φ 177.8mm, internal diameter be the drill collar (also claiming drilling tool) of Φ 71.44mm as counterweight metallic rod 7, to overcome the buoyancy of extended slurry, sink to position and extended slurry only overflows ground to outer cylinder body 3-1; Present embodiment respectively save between outer cylinder body adopt be welded and fixed integral, outer cylinder body 3-1 overall length 102m; After slow setting cement is solidified into one outer cylinder body 3-1 and basic well 1, take out drill collar for counterweight (being metallic rod 7) by suspension hook, stand-by;
Gas storage cylindrical shell 3-3 under step C.: still routinely the fixation method of underground gas storage well shaft to being lowered to that bottom is provided with conical bolt hole in the outer cylinder body 3-1 after step B is fixing and outer surface arranges the gas storage cylindrical shell of a centralizer 3-3.2 at interval of 15m, when gas storage cylindrical shell 3-3 after 100m, adopt Barrel hoisting clamping plate 5 that gas storage cylindrical shell 3-3 is gripped and thereon oral area load onto and the intubate supported flange 8 that is in the milk supporting with wellhead flange;
The moulding of step D. cement injection protection reinforced layer and multilayer gas storage well cylindrical shell is fixed: grouting intubate 9 is inserted through in step C adopts the gas storage cylindrical shell 3-3 that lifting clamping plate 5 grip, after its lower end is communicated with the grouting process hole of gas storage cylinder body bottom and screws, and startup grouting pump 10, will to be mixed with proportion be 1.8g/cm
3cement slurry through the grouting process hole of gas storage cylindrical shell 3-3 bottom, pour into from bottom to top in the annular space between gas storage cylindrical shell 3-3 and outer cylinder body 3-1, when cement slurry overflows behind ground, closes grouting pump 10, the high pressure joint of then opening grouting intubate 9 upper ends packs pigging plug 9-1 in grouting intubate 9 into, connect after joint, immediately to pump in intubate clear water by pigging plug 9-1 to pressing down to remove the cement slurry in grouting intubate 9 and plug position, grouting process hole, when uprushing, pump pressure closes grouting pump, until cement slurry, solidify and form after protection reinforced layer 3-2, the intubate of being in the milk 9 is extracted out together with pigging plug 9-1, recycling grouting intubate lower end thread head screws in cock-type tapered thread plug 3-3.4 in grouting process hole, by its sealing, obtain by gas storage cylindrical shell 3-3, the multilayer gas storage well cylindrical shell of protection reinforced layer 3-2 and outer cylinder body 3-1 composition, again after pressure testing is qualified, .
Present embodiment gained multilayer gas storage well cylindrical shell after pressure testing is qualified, load onto wellhead assembly 12 on request and can be used as gas peak regulation station, storage and distribution station and store high-pressure natural gas and use.
Embodiment 2: the present embodiment is adopted one-way valve as example take the grouting process hole plug 3-3.4 of gas storage cylindrical shell 3-3 bottom, the setting of its one-way valve and to grout injection in the annular space between gas storage cylindrical shell 3-3 and outer cylinder body 3-1 all adopt one of the present patent application people, at notification number, being CN1837672B, the disclosed mode of patent document is carried out; In the present embodiment, all the other structures of multilayer gas storage well cylindrical shell and technological method are all identical with embodiment 1.
Claims (4)
1. the forming method of multilayer gas storage well cylindrical shell for underground gas storage well of high-pressure fuel gas, its forming method is:
Steps A. bore basic well: first by oil, gas drilling technology and program, bore basic well;
Step B. preparation extended slurry fixed outer cylinder body: by the 40-55% preparation outer cylinder body of basic well volume and the basic borehole wall, be connected and fixed with extended slurry, the weight percentage of cement slurry is: cement: water: filtrate loss reduction additive: retarding agent: water reducing agent=1:0.6～0.7:0.012～0.018:0.0007～0.0010:0.012～0.018, after stirring, the extended slurry preparing is injected to the 40-55% to basic well volume in basic well, the fixation method of underground gas storage well shaft arrives bottom in basic well under the outer cylinder body with sealing head routinely again, below being lowered into extended slurry face, outer cylinder body inserts mass in backward outer cylinder body, to overcome the buoyancy of extended slurry, sink to position and extended slurry overflows ground only to outer cylinder body, after slow setting cement is solidified into one outer cylinder body and basic well, take out mass,
Gas storage cylindrical shell under step C.: still routinely the fixation method of underground gas storage well shaft to being lowered to that bottom is provided with grouting process hole in the outer cylinder body after step B is fixing and outer surface interval arranges the gas storage cylindrical shell of centralizer, after putting in place under gas storage cylindrical shell, adopt Barrel hoisting clamping plate that gas storage cylindrical shell is gripped;
The moulding of step D. cement injection protection reinforced layer and multilayer gas storage well cylindrical shell: grouting intubate is inserted after step C adopts that hanging clamp plate holder is held in the gas storage cylindrical shell fixing, its lower end is communicated with the grouting process hole of gas storage cylinder body bottom and screws, and startup grouting pump, will to be mixed with proportion be 1.6～1.9g/cm
3cement slurry through the grouting process hole of gas storage cylinder body bottom, pour into from bottom to top in the annular space between gas storage cylindrical shell and outer cylinder body, when cement slurry overflows behind ground, closes grouting pump, the high pressure joint of then opening grouting intubate upper end packs pigging plug in grouting intubate into, connect after joint, immediately to pump in intubate clear water by plug to pressing down to remove the cement slurry in grouting intubate and plug position, grouting process hole, when uprushing, pump pressure closes grouting pump, until cement slurry, solidify and form after protection reinforced layer, extract grouting intubate and pigging plug thereof out, recycling grouting intubate lower end thread head screws in grouting process hole plug in grouting process hole, by its sealing, obtain by gas storage cylindrical shell, the multilayer gas storage well cylindrical shell of protection reinforced layer and outer cylinder body composition, again after pressure testing is qualified, .
2. the forming method with multilayer gas storage well cylindrical shell by underground gas storage well of high-pressure fuel gas described in claim 1, it is characterized in that in extended slurry composition described in step B: filtrate loss reduction additive is carboxymethyl cellulose or sodium polyacrylate, sulfonated-pheno-formoldehyde resin, described retarding agent is gluconic acid sodium salt or high sugared lignosulfonates, citric acid, and described water reducing agent is naphthalene sulphonate formaldehyde mixture or lignosulfonates, polycarboxylate; And the slow setting time of described extended slurry is not less than 10 hours.
3. the forming method with multilayer gas storage well cylindrical shell by underground gas storage well of high-pressure fuel gas described in claim 1, is characterized in that between each joint cylindrical shell, adopting welding or bonding, riveted joint, spiral marking connection mode fixed connection in fixed outer cylinder body described in step B, its outer cylinder body.
4. the forming method with multilayer gas storage well cylindrical shell by underground gas storage well of high-pressure fuel gas described in claim 1, it is characterized in that described in step B below outer cylinder body is lowered into extended slurry face after to inserting mass in outer cylinder body, its mass is metallic rod or metallic rod+water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210056315.9A CN102588727B (en) | 2012-03-02 | 2012-03-02 | Molding method of multilayer gas storage well cylinder body for high-pressure fuel gas underground gas storage well |
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| CN201210056315.9A CN102588727B (en) | 2012-03-02 | 2012-03-02 | Molding method of multilayer gas storage well cylinder body for high-pressure fuel gas underground gas storage well |
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| CN102588727B true CN102588727B (en) | 2014-04-16 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| PT1435481E (en) * | 2002-10-30 | 2006-06-30 | Poillucci Giovanni | GAS TANK WITH PROTECTION SYSTEM FOR UNDERGROUND INSTALLATION |
| CN1712765A (en) * | 2004-06-25 | 2005-12-28 | 樊克俊 | Multi-layer container |
| CN2864316Y (en) * | 2005-10-11 | 2007-01-31 | 冉训 | Air reservation used well bore for underground gas-storage well |
| CN200940768Y (en) * | 2005-11-04 | 2007-08-29 | 仲文旭 | Double pipe underground natural gas high pressure gas storage well |
| CN101215967B (en) * | 2008-01-21 | 2010-06-02 | 四川川油天然气科技发展有限公司 | High pressure underground gas well shaft fixing method |
| CN101403317B (en) * | 2008-11-12 | 2011-06-08 | 天津市特种设备监督检验技术研究院 | Double-wall sleeve suspension type high-pressure gas underground storing well installation method and structure thereof |
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