CN110185429A - A kind of sandstone geothermal well casing programme - Google Patents
A kind of sandstone geothermal well casing programme Download PDFInfo
- Publication number
- CN110185429A CN110185429A CN201910386632.9A CN201910386632A CN110185429A CN 110185429 A CN110185429 A CN 110185429A CN 201910386632 A CN201910386632 A CN 201910386632A CN 110185429 A CN110185429 A CN 110185429A
- Authority
- CN
- China
- Prior art keywords
- well
- pipe
- section
- outside
- punching
- 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.)
- Pending
Links
- 238000004080 punching Methods 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 239000004568 cement Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000005553 drilling Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000000440 bentonite Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 241001045988 Neogene Species 0.000 description 2
- 239000010242 baoji Substances 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101150091879 neo gene Proteins 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical group O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of sandstone geothermal well casing programme and construction methods, including a kind of sandstone geothermal well casing programme, including a spud section and Erkaijing well, the Erkaijing well is disposed with float shoe by bottom upwards, cyclone pipe and float tube hoop, the upper end of float tube hoop is provided with production casing, and ground is returned to the full well section well cementation of cement slurry, it is opened one and is provided with surface pipe at well cementation section, the upper end of production casing is arranged in the surface pipe, and the outside of full well well cementation section is set, the outside cement sealing of the surface pipe forms one and opens well cementation section and return to ground, central tube is internally provided in geothermal well, several central tube centralizers are provided on the outside of central tube, the bottom of the central tube is fixed with punching pipe, the lower part of punching pipe is provided with seamless steel pipe sleeve, described one, which opens well cementation section top, is provided with cementing unit, And central tube is fixed by cementing unit.The present invention also provides a kind of construction methods, applied to above-mentioned casing programme.
Description
Technical field
The present invention provides a kind of geothermal well technology, in particular to a kind of sandstone geothermal well casing programme.
Background technique
Geothermal energy resources are a kind of clean reproducible energies of great competitiveness, can be divided into hydro-thermal by its origin cause of formation and output condition
Type and xeothermic lithotype, Guanzhong area geothermal energy resource is mainly the storage of hot water type sandstone heat at present.It is stored up according to Guanzhong basin typical heat
Layer Basin Central includes the east of Baoji protrusion, Xi'an depression, the south for facing the blue raised northwestward, Gu Shi recess, salty gift protrusion
Portion and the south of Pucheng protrusion are (since the data of the geothermal well in Baoji protrusion and Pucheng protrusion is less and incomplete thus not right
It is analyzed).Cenozoic's deposition thickness is generally larger, and especially recess area, generally 3000-5000m are most thick reachable
7000m or more, mostly fluvial facies or fluvio-lacustrine sediments, lithology are mainly sandstone, glutenite and mud stone alternating layers, hole crack hair
It educates, provides good storage space for geothermal fluid.The control of hot water water-bearing stratum buried by basal structure, different parts
It is widely different, it buries shallower, is buried in base recess relatively deep in basement high or concave edges.
The terrestrial heat resources rich reserves of Basin Central are mainly distributed on Xi'an depression and are consolidated based on hole crevice water
In Cenozoic's heat reservori of city's recess, furthermore nearby it is also distributed in some bigger fracture belts (such as Weihe Fracture Zone).Recess
The distribution of interior GEOTHERMAL WATER is mainly influenced by the depositional environment and lithology on its preservation stratum, and certain layer control feature is showed, and
The control that the distribution of GEOTHERMAL WATER is mainly broken near fracture belt, stripped distribution.
Xi'an depression is graben formula, and rift structure development, is the maximum area of Guanzhong basin Cenozoic thickness (Zhou Zhiyi band
Most thick reachable 7000m or so), Cenozoic's thickness is shallow in the deep north in south, and close to the Qinling Mountains, thickness is gradually thinning in front of the mountains and Guanzhong basin
The preferable area of geotherm geology condition.Cenozoic is a set of lacustrine-fluvial sediments based on Neogene System, Paleogene System, and lithology is mainly
Sandstone, glutenite, mud stone, silty, development has Paleogene System Red River group, white deer plateau group, the Gaoling of Neogene System from bottom to top
Group, Lantian Ba He group, Zhang Jiapo group, three groups of the 4th system, Qin Chuan group.The main preservation of GEOTHERMAL WATER is in sandstone, glutenite and mud
In the reservoir that rock is constituted.
In current completion technique, such as Publication No.: " CN105804654A " discloses a kind of novel well bore knot of geothermal well
Structure and completion method, it is disclosed that a kind of novel casing programme of geothermal well, which is vertical drilling, characterized in that
Surface pipe, well cementation section and production casing are disposed with from ground to shaft bottom, surface pipe is incited somebody to action by ground to section of cementing the well
One section of the upper end of well cementation section is wrapped circumferentially around, and well cementation section is overlapped well cementation section by casing and well bore well cementation section forms, casing overlapping well cementation
Section includes hanger, suspension pedestal, annular space sealing, surplus sealing and well cementation protection pipe nipple, and hanger is located on suspension pedestal,
Centre has a surplus to form rabbet channel, and the top surplus sealing of hanger is well cementation protection pipe nipple, ring on the inside of surplus sealing
The lower end of empty sealing is well bore well cementation section, and well bore cements the well section by cement sealing area, built-in production casing.
A kind of completion method of novel casing programme of geothermal well is also disclosed, method and step is as follows:
1) guide shoe has been constructed in production casing bottom；
2) installation production casing pipe string as claimed in claim 2 is set up using using two opening structures, from top to bottom successively
Be provided with hydraulic stage-cementing device, external packer of pipe, adopt fill water-stop, blind plate, level-one water-stop, packet net filament wrapped filter pipe with
And second level injector, the hydraulic stage-cementing device are arranged inside production casing, and it is solid to be classified section progress cement from the bottom to top
Envelope, external packer of pipe are located at the lower section of well bore well cementation section, are blind plates below external packer of pipe, between external packer of pipe and blind plate
It is to adopt filling water-stop；
3) the production casing pipe string that step 2) sets up installation is put into predetermined position, and successfully hung setting；
4) using the cement sealing area of the hydraulic stage-cementing device classification structure note well bore well cementation section in step 2)；
5) the casing overlapping well cementation section for installing well cementation section as described in claim 1 is being set up after step 4) completion；
6) go out to be buckled to from protection pipe nipple after step 6) completion and be sent into drilling tool, circulation is finally bored for extra cementing concrete amount is gone out
Open blind plate completes clean-out service；
7) complete well is gone into operation.
Since there are difference to be unable to complete sandstone underground heat using above-mentioned technology for sandstone geothermal well and traditional geothermal well
The building of well.
Summary of the invention
In view of this, the present invention provides a kind of sandstone geothermal well casing programme.
The technical solution adopted by the present invention are as follows:
A kind of sandstone geothermal well casing programme, the casing programme are vertical well or inclined shaft, and the Erkaijing well is by bottom
It is disposed with float shoe, cyclone pipe and float tube hoop upwards, the upper end of float tube hoop is provided with production casing, and outside is provided with to ground
The full well well cementation section in face, the top of Erkaijing well is arranged in a spud section, and opens one and be provided with surface layer set at well cementation section
The upper end of production casing is arranged in pipe, the surface pipe, and the outside of full well well cementation section is arranged in, outside the surface pipe
Side is out well cementation section, is internally provided with central tube in geothermal well, is provided with several central tube centralizers, institute on the outside of central tube
The bottom for stating central tube is fixed with punching pipe, and the lower part of punching pipe is provided with seamless steel pipe sleeve, and described one, which opens well cementation section top, sets
It is equipped with cementing unit, and central tube is fixed by cementing unit.
Further, the full well section well cementation of the outside cement slurry of the float shoe, cyclone pipe, float tube hoop and production casing is returned
Full well well cementation section is formed to ground.
Further, multiple punching pipe centralizers are provided on the outside of the punching pipe, and on the tube body of punching pipe uniformly
Several punchings are provided with, the aperture of the punching is 15~20mm, and the spacing of punching is 15~20cm.
Further, the seamless steel pipe sleeve is wrapped in the outside of punching pipe.
Further, the outside of the surface pipe and production casing is provided with cage centralizer at interval of 20~40m.
The invention has the benefit that
Casing programme and construction method provided by the invention be suitable for sandstone, glutenite and mud stone area, can complete with
The heat exchange well of individual well 2500m is main heat source, is then swapped out hot water by central tube, and hot water goes out after well head through matching the heat pump machine met
Group carries out the laggard user of temperature raising.
Figure of description
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention
And explanation is used to explain the present invention, but not as a limitation of the invention.
Referring to Fig.1, the present invention provides a kind of sandstone geothermal well casing programmes, and the casing programme is for vertical well or tiltedly
Well, including a spud section and Erkaijing well, the Erkaijing well be disposed with upwards by bottom float shoe 1, cyclone pipe 100 and
Float tube hoop, the upper end of float tube hoop is provided with production casing 102, and returns to ground with the full well section well cementation of cement slurry, and described one drives a well
The top of Erkaijing well is arranged in section, and opens one and be provided with surface pipe 9 at well cementation section, and the surface pipe 9 is arranged in life
Is produced from the upper end of casing 102, and the outside of full well well cementation section is set, the outside of the surface pipe 9 forms one with cement sealing
It opens well cementation section 104 and returns to ground, be internally provided with central tube 7 in geothermal well, several central tubes are provided on the outside of central tube 7
Centralizer, the bottom of the central tube 7 are fixed with punching pipe 4, and the lower part of punching pipe 4 is provided with seamless steel pipe sleeve 2, and described one opens
It is provided with cementing unit 10 above well cementation section, and central tube 7 is fixed by cementing unit 10.
The full well section well cementation of outside cement slurry of the float shoe, cyclone pipe, float tube hoop and production casing returns to ground shape
Help well well cementation section.
It is provided with multiple punching pipe centralizers on the outside of the punching pipe, and is evenly arranged on the tube body of punching pipe several
Punching, the aperture of the punching are 15~20mm, and the spacing of punching is 15~20cm.
The seamless steel pipe sleeve is wrapped in the outside of punching pipe.
The outside of the surface pipe and production casing is provided with cage centralizer at interval of 20~40m.
The present invention also provides a kind of construction methods of sandstone geothermal well, which comprises the steps of:
1) it one spuds in into after being drilled into 100m with Φ 346.5mm drill bit and layer casing and one to open well cementation 103, then wait solidifying
48h；It waits and carries out water filling inspection after coagulating 48 hours, liquid level decline≤2cm/h is qualification inside and outside surface pipe；Then surface layer set is carried out
Pipe string pressure test can carry out surface pipe pressure testing after having surveyed cementing quality, and pressure testing 10MPa, pressure stabilizing 30 minutes, pressure drop was no more than
0.5MPa；
2) it two spuds in and is drilled into the end hole 2500m into Φ 241.3mm drill bit, constructed float shoe in the bottom of Erkaijing well, and
Lower cyclone pipe opens well cementation at well pipe sleeve and production casing and with highly resistance oil-well cement two；It waits and carries out water filling inspection after coagulating 48 hours
It looks into, it is qualification that liquid level, which declines≤1~2cm/h, inside and outside casing, and casing pressure test can be carried out by having surveyed after cementing quality, pressure testing 10~
13MPa, pressure stabilizing 30~50 minutes, pressure drop was no more than 0.5~1MPa；
3) inner ring sky well-flushing is carried out after step 2) pressure testing is qualified, and interior annular space impurity is cleaned up；
4) central tube enters well: counter weight device is carried out, in order by seamless steel pipe sleeve, punching pipe and central tube sweat soldering
Placement central tube centralizer in place is wanted in tripping in.
Among the above, described one, which opens well cementation and two, opens cementing slurry and all returns to ground, surface pipe and production casing well
Mouth is connected using cement sealing and wellhead assembly.
Among the above, in step 1), one spuds in after finishing drilling, tripping in Φ 273 × 7.09mm surface pipe, and depth 0~
100m, and carry out one using G grades of highly resistance cement and open well cementation.
Among the above, after step 2) two spuds in finishing drilling, tripping in Φ 177.8 × 8.05mm production casing, depth 0~
2500m, and using the full well section well cementation of G grades of highly resistance cement, cement slurry returns to ground.
Among the above, full well section well cementation is cemented the well twice using classification, and sizing collar 101 is placed in 1500m, to prevent cement slurry
Column is excessively high and presses leakage stratum.
Among the above, surface pipe 0-100m Φ 273mm × 7.09mm grade of steel J55 petroleum casing pipe；Production casing 0-
2500m, Φ 177.8mm × 8.05mm grade of steel N80 petroleum casing pipe；Exchange heat central tube 0-2500m, Φ 110mm × 10.00mmPPR
Special tubes.
Among the above, one opens the technical data sheet 1. opened with two
Table 1: downhole parameters
The master data of casing programme such as table 2.
Table 2: the master data of casing programme
Among the above, 1. an exploitation prehydration bentonite drilling fluid, formula are as follows:
Clear water+5%~6%+0.1%~0.2%Na of bentonite2CO3+ 0.3%HV-CMC；
2. two exploitation temperature resistance low solids polymer drilling fluid systems, are formulated as follows:
Clear water+5%~6%+0.2%~0.5%Na of bentonite2CO3+ 1%~2%CaCl2+ 1%~2% ammonium salt+1%
Fluid loss additive+2%~+1% temperature resisting agent of 3% lubricant.
In the present invention, using hot-melt adhesive paste tripping in PPR material Φ 110mm central tube.
Central tube quality control requirement is as follows:
5 are punching pipe before PPR central tube is reciprocal, and punching aperture is 18mm, the cloth hole in the form of plum blossom, and pitch of holes is
The petroleum casing pipe counterweight and PPR material Φ 110mm central tube connection type of 18cm, bottom Φ 127mm are right-angled intersection rivet company
It connects and impulse- free robustness is processed by shot blasting, bottom aperture closing in 38mm in the form of pen tip.
Referring to table 3, table 3 opens the underlying parameter opened with two with cement for one.
Technical solution disclosed in the embodiment of the present invention is described in detail above, specific implementation used herein
Example is expounded the principle and embodiment of the embodiment of the present invention, and the explanation of above embodiments is only applicable to help to understand
The principle of the embodiment of the present invention；At the same time, for those skilled in the art is being embodied according to an embodiment of the present invention
There will be changes in mode and application range, in conclusion the content of the present specification should not be construed as to limit of the invention
System.
Claims (5)
1. a kind of sandstone geothermal well casing programme, which is vertical well or inclined shaft, including a spud section and two drives a well
Section, which is characterized in that the Erkaijing well is disposed with float shoe, cyclone pipe and float tube hoop by bottom upwards, float tube hoop
Upper end is provided with production casing, and outside is provided with to the full well well cementation section on ground, and Erkaijing well is arranged in a spud section
Top, and opened one and be provided with surface pipe at well cementation section, the upper end of production casing is arranged in the surface pipe, and is arranged
The outside of full well well cementation section is out well cementation section on the outside of the surface pipe, is internally provided with central tube, center in geothermal well
Several central tube centralizers are provided on the outside of pipe, the bottom of the central tube is fixed with punching pipe, the lower part setting of punching pipe
There is seamless steel pipe socket, described one, which opens well cementation section top, is provided with cementing unit, and central tube is fixed by cementing unit.
2. sandstone geothermal well casing programme according to claim 1, which is characterized in that the float shoe, cyclone pipe, float tube hoop
And the full well section well cementation of outside cement slurry of production casing returns to ground and forms full well well cementation section.
3. sandstone geothermal well casing programme according to claim 1, which is characterized in that be provided on the outside of the punching pipe
Multiple punching pipe centralizers, and several punchings are evenly arranged on the tube body of punching pipe, the aperture of the punching is 15~20mm,
The spacing of punching is 15~20cm.
4. sandstone geothermal well casing programme according to claim 1, which is characterized in that the seamless steel pipe sleeve is wrapped in punching
The outside of hole pipe.
5. sandstone geothermal well casing programme according to claim 1, which is characterized in that the surface pipe and production casing
Outside 20~40m is provided with cage centralizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386632.9A CN110185429A (en) | 2019-05-09 | 2019-05-09 | A kind of sandstone geothermal well casing programme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386632.9A CN110185429A (en) | 2019-05-09 | 2019-05-09 | A kind of sandstone geothermal well casing programme |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110185429A true CN110185429A (en) | 2019-08-30 |
Family
ID=67714329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910386632.9A Pending CN110185429A (en) | 2019-05-09 | 2019-05-09 | A kind of sandstone geothermal well casing programme |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110185429A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266297A (en) * | 2021-05-26 | 2021-08-17 | 中石化绿源地热能(陕西)开发有限公司 | Special sealing suspension system for same-well mining and irrigation and well body structure |
| CN113899092A (en) * | 2021-11-01 | 2022-01-07 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
| WO2022088387A1 (en) * | 2020-10-29 | 2022-05-05 | 陕西西咸新区沣西新城能源发展有限公司 | Medium-deep layer interference-free geothermal heating system and method based on loose mud sandstone geology |
| US11624530B2 (en) | 2020-10-29 | 2023-04-11 | Shaanxi Xixian New Area Fengxi New City Energy Development Co., Ltd | Medium-deep non-interference geothermal heating system and method based on loose siltstone geology |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2196880C1 (en) * | 2001-04-23 | 2003-01-20 | Открытое акционерное общество "Татнефть" | Method of well two-stage cementing |
| CN105804654A (en) * | 2016-03-16 | 2016-07-27 | 中石化绿源地热能开发有限公司 | Novel well bore structure and well completion method for geothermal well |
| CN105863569A (en) * | 2016-04-14 | 2016-08-17 | 中国石油大学(华东) | Single-well fracture gravity self-circulation dry-hot-rock geotherm mining method |
| CN105909214A (en) * | 2016-04-14 | 2016-08-31 | 中国石油大学(华东) | Method for exploiting compact dry heat rock geothermal energy by utilizing long horizontal well self-circulation structure |
| CN106894804A (en) * | 2017-03-06 | 2017-06-27 | 中国石油集团钻井工程技术研究院 | A kind of enhanced geothermal system completion method of standing column well |
| CN109403916A (en) * | 2018-12-05 | 2019-03-01 | 田振林 | A kind of thermally conductive well shaft fixing technology of geothermal well |
| CN208594924U (en) * | 2018-07-09 | 2019-03-12 | 中国石油天然气股份有限公司 | Develop the well pattern structure of enhanced underground heat |
| CN210396713U (en) * | 2019-05-09 | 2020-04-24 | 中石化绿源地热能(陕西)开发有限公司 | Sandstone geothermal well body structure |
-
2019
- 2019-05-09 CN CN201910386632.9A patent/CN110185429A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2196880C1 (en) * | 2001-04-23 | 2003-01-20 | Открытое акционерное общество "Татнефть" | Method of well two-stage cementing |
| CN105804654A (en) * | 2016-03-16 | 2016-07-27 | 中石化绿源地热能开发有限公司 | Novel well bore structure and well completion method for geothermal well |
| CN105863569A (en) * | 2016-04-14 | 2016-08-17 | 中国石油大学(华东) | Single-well fracture gravity self-circulation dry-hot-rock geotherm mining method |
| CN105909214A (en) * | 2016-04-14 | 2016-08-31 | 中国石油大学(华东) | Method for exploiting compact dry heat rock geothermal energy by utilizing long horizontal well self-circulation structure |
| CN106894804A (en) * | 2017-03-06 | 2017-06-27 | 中国石油集团钻井工程技术研究院 | A kind of enhanced geothermal system completion method of standing column well |
| CN208594924U (en) * | 2018-07-09 | 2019-03-12 | 中国石油天然气股份有限公司 | Develop the well pattern structure of enhanced underground heat |
| CN109403916A (en) * | 2018-12-05 | 2019-03-01 | 田振林 | A kind of thermally conductive well shaft fixing technology of geothermal well |
| CN210396713U (en) * | 2019-05-09 | 2020-04-24 | 中石化绿源地热能(陕西)开发有限公司 | Sandstone geothermal well body structure |
Non-Patent Citations (2)
| Title |
|---|
| 余树良: "《采气地质基础》", 30 November 1984, 石油工业出版社, pages: 52 - 55 * |
| 王金磊;段云星;戴成林;: "干热岩地热井井身结构调研", 新疆石油科技, no. 03, 15 September 2015 (2015-09-15) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088387A1 (en) * | 2020-10-29 | 2022-05-05 | 陕西西咸新区沣西新城能源发展有限公司 | Medium-deep layer interference-free geothermal heating system and method based on loose mud sandstone geology |
| US11624530B2 (en) | 2020-10-29 | 2023-04-11 | Shaanxi Xixian New Area Fengxi New City Energy Development Co., Ltd | Medium-deep non-interference geothermal heating system and method based on loose siltstone geology |
| CN113266297A (en) * | 2021-05-26 | 2021-08-17 | 中石化绿源地热能(陕西)开发有限公司 | Special sealing suspension system for same-well mining and irrigation and well body structure |
| CN113899092A (en) * | 2021-11-01 | 2022-01-07 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
| CN113899092B (en) * | 2021-11-01 | 2024-02-23 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110185429A (en) | A kind of sandstone geothermal well casing programme | |
| CN105804654B (en) | A kind of novel casing programme of geothermal well and completion method | |
| CN104265242B (en) | The ground thermal extraction method of geothermal well | |
| NO300988B1 (en) | Method of lining a production formation in a well | |
| CN101532600B (en) | Method for leak stoppage of solid expansion pipe | |
| CN104633996B (en) | Water source heat pump recharging technical method | |
| CN108915635A (en) | The method for preventing has channeling after high-pressure gas well drilling liner cementing | |
| CN105221129B (en) | A kind of hydraulic pressure demolition, which is opened, splits CO2Take the reservoir anti-reflection method of proppant pressure break | |
| CN109236186A (en) | New well drilling casing and big wellbore multilateral well quick drill completion method | |
| CN103711457A (en) | Design method of six-spud-in wellbore structure | |
| CN108361001A (en) | A kind of deep trona drilling well exploitation cementing stage technique | |
| CN103900428B (en) | A kind of borehole charge method for underwater sludge layer disturbance explosion | |
| CN110630211B (en) | Method for blocking overburden mining-induced fracture by ultrasonic in-situ slurry making | |
| Miao et al. | Development status and prospect of staged fracturing technology in horizontal wells | |
| CN108222821B (en) | A kind of well drilling technology suitable for middle low temperature geothermal well | |
| US9482082B2 (en) | Method and apparatus for stimulating a geothermal well | |
| US20170247990A1 (en) | Method for drilling and fracture treating multiple wellbores | |
| CN210396713U (en) | Sandstone geothermal well body structure | |
| RU2427703C1 (en) | Procedure for construction of wells of multi-pay oil field | |
| CN105178286B (en) | The vacuum grouting technique of fragmentation batholith | |
| RU2379492C2 (en) | Development method at wells re-entry and oil field in general | |
| CN108343419B (en) | Underground coal gasification drilling bottom protection structure and construction method | |
| CN106996282B (en) | The compound completion method of pneumatic jack trap | |
| CN213898935U (en) | Sandstone geothermal well structure | |
| RU2235858C2 (en) | Method for preventing gas migration along behind-column space of oil and gas wells, as well as following intercolumn gas manifestations and gas springs on their mouths |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 710510 floor 14, Jianshe building, No.4, Zhonghua West Road, Qindu District, Xianyang City, Shaanxi Province Applicant after: Sinopec green source geothermal (Shaanxi) Development Co., Ltd Address before: 710510 14th Floor, Building 4, West China Road, Qindu District, Xianyang City, Shaanxi Province Applicant before: SHAANXI LVYUAN GEOTHERMAL ENERGY DEVELOPMENT Co.,Ltd. |