CN102251760A - Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well - Google Patents
Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well Download PDFInfo
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- CN102251760A CN102251760A CN2011100910094A CN201110091009A CN102251760A CN 102251760 A CN102251760 A CN 102251760A CN 2011100910094 A CN2011100910094 A CN 2011100910094A CN 201110091009 A CN201110091009 A CN 201110091009A CN 102251760 A CN102251760 A CN 102251760A
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Abstract
The invention discloses a loose bed and bedrock layer mixed water-intaking and well-forming process for a geothermal well, and the process provided by the invention comprises the following steps: 1) using a slurry positive circulation well drilling process to perform well drilling till the depth of 5-10m below a complete bedrock surface; 2) sinking pipes, namely sinking a well wall pipe at the section below the bedrock surface and the section of a non-loose porous water layer of a loose bed and sinking a water-permeable pipe below the section of a loose porous water layer of the loose bed; 3) filling annular holes, namely pouring cement slurry into the annular holes corresponding to the section below the bedrock surface, putting a filter material into the annular holes corresponding to the loose porous water layer and putting clay balls into the annular holes corresponding to the section of the non-loose porous water layer of the loose bed; and 4) further using a drill bit with the diameter being 5-10mm smaller than the inner diameter of the well wall pipe to continue drilling in the bedrock layer through a clear water drilling process or a negative circulation well drilling process till a bedrock fracture water layer after the cement slurry waits on cementing for 72 hours and completing the well when the water temperature achieves the design temperature. The well drilling process for the geothermal well is suitable for developing geothermal resources in regions with poor geothermal resources and non-developed bedrock structures.
Description
Technical field
The present invention relates to a kind of drilling technology, especially a kind of geothermal well unconsolidated formation mixes the water intaking well drilling technology with horizon d.
Background technology
At the geothermal energy resources enrichment region, often all be only to get the unconsolidated formation pore water or only get crevice water, formation and the cavern water of horizon d purpose producing zone when digging geothermal well for this well.Yet, basement rock barren structure agensis area for geothermal energy resources, if according to the well drilling technology of routine, tend to occur: the water yield can reach designing requirement when getting the unconsolidated formation pore water for the purpose producing zone of this well, and water temperature is lower; The crevice water of only getting horizon d during for the purpose producing zone of this well the water yield less, but water temperature rises to some extent.If the water of two different geological conditions producing zones can be mixed, water temperature necessarily can rise, and the water yield also is guaranteed.Therefore, designing a kind of geothermal well unconsolidated formation and mix the water intaking well drilling technology with horizon d, is the present technical issues that need to address.
Summary of the invention
Technical problem to be solved by this invention provides a kind of geothermal well unconsolidated formation and mixes the water intaking well drilling technology with horizon d.This drilling technology is suitable for the geothermal energy resources exploitation that geothermal energy resources are barren, basement rock is constructed the agensis area.
The technical scheme that the present invention solves its technical problem is:
The geothermal well unconsolidated formation mixes the water intaking well drilling technology with horizon d, its processing step is: 1. use the drilling well of mud direct circulation drilling technology dark to the following 5-10 rice of complete bedrock surface, 2. down pipe promptly bedrock surface with the non-loose pore water interval of hypomere and unconsolidated formation under wall casing, water-permeable pipe under the loose pore water interval of unconsolidated formation, 3. annular distance is filled and is promptly being injected cement paste with hypomere in the corresponding annular distance with bedrock surface, with the corresponding annular distance of loose hole water layer in cast media, with the corresponding annular distance of non-loose pore water interval of unconsolidated formation in drop into clay ball, 4. after cement paste Hou Ning is 72 hours, use diameter to continue to hole with clear water drilling process or counterflush drilling technology again at horizon d less than the drill bit of wall casing internal diameter 5-10mm, to the bedrock fracture water layer, treat that water temperature gets final product completion when reaching design.
Compared with prior art, have the following advantages:
1, can effectively solve the one-tenth well rate that geothermal energy resources are barren, basement rock is constructed agensis area geothermal well.
2, can effectively improve the individual well maximal efficiency, promptly guarantee water yield, improve water temperature again.
Description of drawings
Fig. 1 is an one-tenth well schematic diagram of the present invention.
Among the figure: 1 is the non-loose hole water layer of unconsolidated formation, and 2 is clay ball, and 3 is wall casing, and 4 is water-permeable pipe, and 5 is filtrate, and 6 is the loose hole water layer of unconsolidated formation, and 7 is cement paste, and 8 is basement rock, and 9 is the bedrock fracture water layer.
The specific embodiment
The geothermal well unconsolidated formation mixes the water intaking well drilling technology with horizon d, its processing step is: 1. use the drilling well of mud direct circulation drilling technology dark to the following 5-10 rice of complete bedrock surface, 2. down pipe promptly bedrock surface with the non-loose pore water interval of hypomere and unconsolidated formation under wall casing, water-permeable pipe under the loose pore water interval of unconsolidated formation, 3. annular distance is filled and is promptly being injected cement paste with hypomere in the corresponding annular distance with bedrock surface, with the corresponding annular distance of loose hole water layer in cast media, with the corresponding annular distance of non-loose pore water interval of unconsolidated formation in drop into clay ball, 4. after cement paste Hou Ning is 72 hours, use diameter to continue to hole with clear water drilling process or counterflush drilling technology again at horizon d less than the drill bit of wall casing internal diameter 5-10mm, to the bedrock fracture water layer, treat that water temperature gets final product completion when reaching design.
Claims (3)
1. the geothermal well unconsolidated formation mixes the water intaking well drilling technology with horizon d, it is characterized in that: its processing step is: 1. drilling well is to the following certain depth of complete bedrock surface, this is a perforate, 2. down pipe promptly bedrock surface with the non-loose pore water interval of hypomere and unconsolidated formation under wall casing, water-permeable pipe under the loose pore water interval of unconsolidated formation, 3. annular distance is filled and is promptly being injected cement paste with hypomere in the corresponding annular distance with bedrock surface, with the corresponding annular distance of loose hole water layer in cast media, with the corresponding annular distance of non-loose pore water interval of unconsolidated formation in drop into clay ball, 4. after cement paste Hou Ning is 72 hours, continue to hole with the drill bit of diameter again at horizon d less than wall casing internal diameter 5-10mm, this is two perforates, to the bedrock fracture water layer, treat that water temperature gets final product completion when reaching design.
2. geothermal well unconsolidated formation according to claim 1 mixes the water intaking well drilling technology with horizon d, it is characterized in that: mud direct circulation drilling technology is adopted in a perforate, and a perforate is got into to complete basement rock 5-10 rice dark.
3. geothermal well unconsolidated formation according to claim 1 mixes the water intaking well drilling technology with horizon d, it is characterized in that: two open boring clear water drilling process or counterflush drilling technology.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110091009 CN102251760B (en) | 2011-04-12 | 2011-04-12 | Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well |
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| CN 201110091009 CN102251760B (en) | 2011-04-12 | 2011-04-12 | Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well |
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| CN102251760A true CN102251760A (en) | 2011-11-23 |
| CN102251760B CN102251760B (en) | 2013-04-17 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089155A (en) * | 2016-06-08 | 2016-11-09 | 刘家容 | A kind of geothermal well mixing water intaking well drilling technology |
| CN106194148A (en) * | 2016-08-30 | 2016-12-07 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on wind and rain playground |
| CN106194124A (en) * | 2016-08-30 | 2016-12-07 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on bedrock geology |
| CN106225320A (en) * | 2016-08-30 | 2016-12-14 | 湖南中大经纬地热开发科技有限公司 | The terrestrial heat utilization system of flood bank adjacent domain |
| CN106246142A (en) * | 2016-08-30 | 2016-12-21 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on complicated ground stratum |
| CN106268014A (en) * | 2016-08-30 | 2017-01-04 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on loose rock soil layer geology |
| CN106321023A (en) * | 2016-08-30 | 2017-01-11 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on quaternary alluvium-diluvium layer |
| CN106382695A (en) * | 2016-08-30 | 2017-02-08 | 湖南中大经纬地热开发科技有限公司 | Air-conditioning system based on screw water source heat pump |
| CN106401523A (en) * | 2016-10-27 | 2017-02-15 | 北京泰利新能源科技发展有限公司 | Blowout prevention cement slurry well cementation method and device for high-temperature geothermal well |
| CN106403331A (en) * | 2016-08-30 | 2017-02-15 | 湖南中大经纬地热开发科技有限公司 | Heat pump hot water system based on geothermal well |
| CN106401567A (en) * | 2016-08-30 | 2017-02-15 | 湖南中大经纬地热开发科技有限公司 | Water level and water temperature automatic monitoring system based on superficial layer geothermal well |
| CN106403379A (en) * | 2016-08-30 | 2017-02-15 | 湖南中大经纬地热开发科技有限公司 | Geotherm utilizing method based on bed rock geology |
| CN106437628A (en) * | 2016-08-30 | 2017-02-22 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on multi-layer geologies of silty clay layer, pebble layer and muddy siltstone |
| CN106545317A (en) * | 2016-10-28 | 2017-03-29 | 北京泰利新能源科技发展有限公司 | A kind of target reservoir method for fetching water and device for geothermal well drilling engineering |
| CN112983428A (en) * | 2021-02-20 | 2021-06-18 | 上海市政工程设计研究总院（集团）有限公司 | Method for building underground water environment monitoring well |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089155A (en) * | 2016-06-08 | 2016-11-09 | 刘家容 | A kind of geothermal well mixing water intaking well drilling technology |
| CN106437628A (en) * | 2016-08-30 | 2017-02-22 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on multi-layer geologies of silty clay layer, pebble layer and muddy siltstone |
| CN106321023B (en) * | 2016-08-30 | 2018-12-07 | 湖南中大经纬地热开发科技有限公司 | The geothermal well of diluvial formation is rushed based on the 4th system |
| CN106268014B (en) * | 2016-08-30 | 2018-06-19 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on loose rock-soil layer geology |
| CN106194148B (en) * | 2016-08-30 | 2018-08-17 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on wind and rain playground |
| CN106268014A (en) * | 2016-08-30 | 2017-01-04 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on loose rock soil layer geology |
| CN106321023A (en) * | 2016-08-30 | 2017-01-11 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on quaternary alluvium-diluvium layer |
| CN106382695A (en) * | 2016-08-30 | 2017-02-08 | 湖南中大经纬地热开发科技有限公司 | Air-conditioning system based on screw water source heat pump |
| CN106225320B (en) * | 2016-08-30 | 2019-08-02 | 湖南中大经纬地热开发科技有限公司 | The terrestrial heat utilization system of flood bank adjacent domain |
| CN106403331A (en) * | 2016-08-30 | 2017-02-15 | 湖南中大经纬地热开发科技有限公司 | Heat pump hot water system based on geothermal well |
| CN106401567A (en) * | 2016-08-30 | 2017-02-15 | 湖南中大经纬地热开发科技有限公司 | Water level and water temperature automatic monitoring system based on superficial layer geothermal well |
| CN106403379A (en) * | 2016-08-30 | 2017-02-15 | 湖南中大经纬地热开发科技有限公司 | Geotherm utilizing method based on bed rock geology |
| CN106194148A (en) * | 2016-08-30 | 2016-12-07 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on wind and rain playground |
| CN106401567B (en) * | 2016-08-30 | 2019-08-02 | 湖南中大经纬地热开发科技有限公司 | A kind of water-level and water-temperature automatic monitoring system based on geothermal well |
| CN106225320A (en) * | 2016-08-30 | 2016-12-14 | 湖南中大经纬地热开发科技有限公司 | The terrestrial heat utilization system of flood bank adjacent domain |
| CN106246142A (en) * | 2016-08-30 | 2016-12-21 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on complicated ground stratum |
| CN106382695B (en) * | 2016-08-30 | 2019-03-19 | 湖南中大经纬地热开发科技有限公司 | A kind of air-conditioning system based on screw rod water resource heat pump |
| CN106246142B (en) * | 2016-08-30 | 2018-10-12 | 湖南中大经纬地热开发科技有限公司 | A kind of geothermal well based on complicated ground stratum |
| CN106194124B (en) * | 2016-08-30 | 2018-10-19 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on Bedrock Geology |
| CN106403331B (en) * | 2016-08-30 | 2018-10-19 | 湖南中大经纬地热开发科技有限公司 | Heat pump hot-water system based on geothermal well |
| CN106194124A (en) * | 2016-08-30 | 2016-12-07 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on bedrock geology |
| CN106437628B (en) * | 2016-08-30 | 2018-12-18 | 湖南中大经纬地热开发科技有限公司 | Based on farinose argillic horizon, boulder bed, argillaceous siltstoue multilayer geology geothermal well |
| CN106401523A (en) * | 2016-10-27 | 2017-02-15 | 北京泰利新能源科技发展有限公司 | Blowout prevention cement slurry well cementation method and device for high-temperature geothermal well |
| CN106545317B (en) * | 2016-10-28 | 2018-09-04 | 北京泰利新能源科技发展有限公司 | A kind of target reservoir method for fetching water and device for geothermal well drilling engineering |
| CN106545317A (en) * | 2016-10-28 | 2017-03-29 | 北京泰利新能源科技发展有限公司 | A kind of target reservoir method for fetching water and device for geothermal well drilling engineering |
| CN112983428B (en) * | 2021-02-20 | 2023-03-14 | 上海市政工程设计研究总院（集团）有限公司 | Method for building underground water environment monitoring well |
| CN112983428A (en) * | 2021-02-20 | 2021-06-18 | 上海市政工程设计研究总院（集团）有限公司 | Method for building underground water environment monitoring well |
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Denomination of invention: Mixed water intake technology of loose layer and bedrock layer of geothermal well Effective date of registration: 20220920 Granted publication date: 20130417 Pledgee: Guangping County Rural Credit Cooperative Pledgor: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. Registration number: Y2022130000073 |
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Address after: 057651 North side of the middle section of Jin Guangyuan Road, Guangping County, Handan City, Hebei Province Patentee after: Hebei Weiye Geothermal New Energy Technology Co.,Ltd. Address before: 057650 South of Renmin Road East Section, Guangping County, Handan City, Hebei Province Patentee before: HANDAN WEIYE GEOTHERMAL DEVELOPMENT CO.,LTD. |
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