CN113513299A - Hot dry rock vertical well co-well injection and production method - Google Patents
Hot dry rock vertical well co-well injection and production method Download PDFInfo
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- CN113513299A CN113513299A CN202110888913.1A CN202110888913A CN113513299A CN 113513299 A CN113513299 A CN 113513299A CN 202110888913 A CN202110888913 A CN 202110888913A CN 113513299 A CN113513299 A CN 113513299A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 115
- 239000011435 rock Substances 0.000 title claims abstract description 73
- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 230000035515 penetration Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000011161 development Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 5
- 239000012466 permeate Substances 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 208000013201 Stress fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000003245 coal Substances 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- 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
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- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention discloses a hot dry rock vertical well same-well injection and production method, which comprises the following steps: a first well building step: building a production vertical well, wherein the production vertical well extends into the hot dry rock reservoir from the overburden; a second well building step: drilling a plurality of branch wells at the upper well section of the production vertical well, wherein the plurality of branch wells comprise directional well sections and hanging vertical well sections, and the hanging vertical well sections extend into the hot dry rock reservoir; and (3) injection and production steps: and injecting low-temperature water into the branch well, and pumping out the high-temperature mixture entering the production vertical well through a lifting pump. When the method for injection and production of the dry hot rock vertical well in the same well is implemented, low-temperature water can be injected into the plurality of branch wells, and simultaneously, high-temperature mixture in the production vertical well is pumped out through the lifting pump, so that synchronous circulating injection and production are realized, the injection and production efficiency is greatly improved, and the development cost is reduced.
Description
Technical Field
The invention relates to the field of dry hot rock exploitation, in particular to a dry hot rock vertical well co-well injection and exploitation method.
Background
The Hot Dry Rock (Hot Dry Rock, HDR) is a storage medium for heat energy in the earth, and since the us Los Alamos national laboratory proposed the concept of Hot Dry Rock heat energy in the 70 th 20 th century, the definition of Hot Dry Rock is continuously developing, and the latest definition of Hot Dry Rock in geothermal energy terminology is that an abnormally high temperature Rock mass with no or only a small amount of fluid in the interior and a temperature higher than 180 ℃. According to conservative estimation, the energy contained in the dry heat rock (usually 3-10 km deep) in the crust is 30 times of the energy contained in all petroleum, natural gas and coal in the world. Evaluation data of the Chinese geological survey bureau show that the total amount of hot and dry rock resources at a depth of 3-10 km in the Chinese continent is 2.5 multiplied by 1025J (856 trillion standard coals), and if 2% of the hot and dry rock resources can be mined, the total amount of the hot and dry rock resources is 4400 times of the total amount of disposable energy consumption in 2015 years in China.
The development of conventional hot dry rock resources mainly utilizes an Enhanced Geotherm System (EGS) to extract heat inside the System. The enhanced geothermal system forms artificial cracks in underground deep low-permeability high-temperature rock bodies through engineering means such as hydraulic fracturing, water is injected through the recharge well, the injected water moves along reservoir cracks and joints or artificial seam networks and exchanges heat with surrounding rocks, and high-temperature high-pressure water or a water-vapor mixture is generated. After high-temperature steam is extracted from the production well to the ground, the high-temperature steam is used for power generation and comprehensive utilization through heat exchange and a ground circulating device. The utilized warm water is injected into the underground dry and hot rock mass through the recharging well, so that the aim of recycling is fulfilled.
In recent years, whether fracturing induces earthquake is the most controversial topic in the field of hot dry rock, and the former has been to analyze whether the two have causal relationship according to statistics, constructology, seismology and the like, so that the view is different. However, it is certain that the dry heat rock fracturing process necessarily causes certain disturbance to the surrounding environment, in 2017, a 5.5-class Lee earthquake occurs in Korea Punji city, the depth of the earthquake source is 9km, the related research considers that the earthquake is caused by artificial fracturing of the Punji geothermal well which is several kilometers away, and then the Korea government stops the Punji geothermal power generation project. In addition, the lithology of the hot dry rock reservoir is mainly various metamorphic rocks or crystalline rocks, the hydraulic fracturing construction cracks are difficult to initiate and extend, the ground construction pressure is high, and the requirements on the performance of construction equipment and the like are extremely high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a hot dry rock vertical well co-well injection and production method.
The technical scheme adopted by the invention for solving the technical problems is as follows: discloses a hot dry rock vertical well co-well injection and production method, which comprises the following steps:
a first well building step: building a production vertical well, wherein the production vertical well extends into the hot dry rock reservoir from the overburden;
a second well building step: drilling a plurality of branch wells at the upper well section of the production vertical well, wherein the plurality of branch wells comprise directional well sections and hanging vertical well sections, and the hanging vertical well sections extend into the hot dry rock reservoir;
and (3) injection and production steps: and injecting low-temperature water into the branch well, and pumping out the high-temperature mixture entering the production vertical well through a lifting pump.
In the hot dry rock vertical well co-well injection and production method, the first well building step specifically comprises the following steps:
vertically drilling a production vertical well to a dry hot rock reservoir;
fixing a production casing in the production vertical well for cementing;
and carrying out negative pressure deep penetration perforation completion on the dry hot rock well section of the production vertical well.
In the method for injecting and extracting the dry-hot-rock vertical well in the same well, the production vertical well comprises a first vertical well section and a second vertical well section, the well depth of the first vertical well section is 400-.
In the hot dry rock vertical well co-well injection and production method, the second well building step specifically comprises the following steps:
drilling a plurality of directional well sections at different positions and heights of the well section on the upper part of the production vertical well;
and drilling a suspended straight well section downwards at the tail end of the directional well section.
In the method for injecting and extracting the dry hot rock vertical well in the same well, the projections of two adjacent directional well sections in the plurality of directional well sections on the vertical cross section of the production vertical well form an included angle of 120 degrees, the connecting well mouths of the plurality of directional well sections and the production vertical well are positioned at different height positions, and the depth of the vertical well section is smaller than that of the production vertical well.
In the hot dry rock vertical well same-well injection and production method, the injection and production steps comprise:
a production pipe column and a lifting pump are put into the production vertical well;
and setting a packer for blocking an annular region at the joint of the dry hot rock reservoir and the overlying stratum in the production vertical well, wherein the packer is fixedly sleeved outside the production pipe column and is positioned at the lower position of a wellhead connected with the directional well section and the production vertical well.
In the hot dry rock vertical well co-injection and production method, the production string comprises a heat insulation oil pipe arranged above the packer and a common oil pipe arranged below the packer, and the heat insulation oil pipe and the common oil pipe are fixedly connected and communicated.
The method for injecting and extracting the hot dry rock in the same well in the vertical well has the following beneficial effects: when the method for injecting and extracting the dry hot rock vertical well in the same well is implemented, the production vertical well and the branch wells are built, the branch wells are made to surround the periphery of the production vertical well, when low-temperature water is injected into the branch wells, the low-temperature water can permeate into the dry hot rock reservoir along the branch wells, the branch wells can greatly increase the contact area and the contact volume of the low-temperature water and the dry hot rock reservoir, and a better extraction effect is achieved. In the injection and production process, low-temperature water can be injected into the plurality of branch wells respectively and simultaneously, the low-temperature water flows along the plurality of branch wells and permeates into cracks of the hot dry rock reservoir to exchange heat with the hot dry rock, the water absorbing heat of the hot dry rock and the mixture thereof gradually flow into the production vertical well, and finally the water and the mixture thereof are lifted out of the production vertical well by the lifting pump to be developed and utilized. In this application, can pour into the low-temperature water into in a plurality of branches, take out the high temperature mixture in will producing the straight well through the lift pump, realize synchronous cycle injection and adopt, improved injection and adopt efficiency greatly, reduced development cost simultaneously.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic flow chart of a dry hot rock vertical well co-well injection and production method of the invention;
FIG. 2 is a schematic diagram of a first configuration of a hot dry rock vertical well co-well injection-production configuration of the present invention;
FIG. 3 is a schematic diagram of a second structure of the hot dry rock vertical well co-injection and production structure of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, in a first embodiment of the hot dry rock vertical well co-well injection and production method of the invention, the hot dry rock vertical well co-well injection and production method comprises the following steps:
s101, a first well building step: a production vertical well 11 is built, and the production vertical well 11 extends into the hot dry rock reservoir 200 from the overburden 100;
s102, a second well building step: drilling a plurality of branch wells 12 on the upper well section of the production vertical well 11, wherein each branch well 12 comprises a directional well section 13 and a hanging vertical well section 14, and the hanging vertical well section 14 extends into the dry hot rock reservoir 200;
s103, injection-production step: low temperature water is injected into the lateral 12 and the high temperature mixture entering the production vertical 11 is pumped out by the lift pump 15.
When the dry hot rock vertical well co-well injection and production method is implemented, the production vertical well 11 and the branch wells 12 are built, the branch wells 12 are made to surround the periphery of the production vertical well 11, when low-temperature water is injected into the branch wells 12, the low-temperature water can permeate into the dry hot rock reservoir layer 200 along the branch wells 12, the branch wells 12 can greatly increase the contact area and the contact volume of the low-temperature water and the dry hot rock reservoir layer 200, and a better exploitation effect is achieved. In the injection and production process, low-temperature water can be injected into the branch wells 12 respectively and simultaneously, the low-temperature water flows along the branch wells 12 and permeates into cracks of the hot dry rock reservoir 200 to exchange heat with the hot dry rock, the water absorbing heat of the hot dry rock and the mixture thereof gradually flow into the production vertical well 11, and finally the water and the mixture thereof are lifted out of the production vertical well 11 by the lifting pump 15 to be developed and utilized. In this application, can be when injecting low temperature water into a plurality of branch wells 12, take out the high temperature mixture in producing the vertical well 11 through lifting pump 15, realize synchronous circulation and annotate and adopt, improved notes greatly and adopted efficiency, reduced development cost simultaneously.
In this embodiment, the first well construction step specifically includes:
vertically drilling a production vertical well 11 to a dry hot rock reservoir 200;
fixing a production casing in the production vertical well 11 for well cementation;
and carrying out negative pressure deep penetration perforation completion on the dry hot rock well section of the production vertical well 11.
Specifically, the production vertical well 11 comprises a first vertical well section and a second vertical well section, wherein the well depth of the first vertical well section is 400-.
Preferably, the production vertical well 11 adopts a double-opening well, the first opening section 17 is drilled to a depth of 500m, the second opening section 18 is vertically drilled to penetrate through a dry hot rock reservoir layer 200F natural fracture development area, the drilling depth is 2500m, the production casing is cemented and then is completed by adopting a deep penetration negative pressure perforation, the perforation well section 2200 is 2500m, and a perforation 16 is utilized to communicate with a dry hot rock reservoir layer 200F natural micro-fracture NF.
In this embodiment, the second well construction step specifically includes:
drilling a plurality of directional well sections 13 at different positions and heights of the well section at the upper part of the production vertical well 11;
a straight wellbore section 14 is suspended downhole at the end of directional wellbore section 13.
Specifically, two adjacent directional well sections 13 in the plurality of directional well sections 13 form an included angle of 120 degrees in projection on the vertical cross section of the production vertical well 11, the connecting well mouths of the plurality of directional well sections 13 and the production vertical well 11 are located at different height positions, and the depth of the hanging vertical well section 14 is smaller than the depth of the production vertical well 11.
Preferably, the branch wells 12 respectively comprise a directional well section 13 and a hanging straight well section 14, the hanging straight well section 14 drills through a 200F natural fracture NF development area of the dry hot rock reservoir, and the drilling depth is 2400 m; the depths of the windowing sidetracking windows of the branch well 12 section are 2150m, 2100m and 2050m respectively, the windows are spirally arranged from bottom to top in the production vertical well 11, and the projections of the windowing and sidetracking directions on the cross section of the shaft of the production vertical well 11 are distributed in 120-degree phase angles.
Further, the injection-production step comprises:
lowering a production string 19 and a lifting pump 15 into the production vertical well 11;
and arranging a packer 20 for blocking an annular area at the joint of the dry hot rock reservoir layer 200 and the overlying strata 100 in the vertical production well 11, wherein the packer 20 is fixedly sleeved outside the production pipe column 19, and the packer 20 is positioned at a position below a wellhead of the directional well section 13 connected with the vertical production well 11.
By providing the production string 19 and the lift pump 15, the high temperature mixture flowing into the production shaft 11 can be pumped out and utilized as heat. By arranging the packer 20, the mixed liquid in the production vertical well 11 can be set, and overflow is avoided. In the injection and production process, low-temperature water can be directly injected into the annular region of the production vertical well 11, and due to the existence of the packer 20, the low-temperature water overflows into the branch well 12 upwards after being blocked by the packer 20, so that the low-temperature water can be extracted and injected through a set of production string 19.
Further, in order to reduce the heat exchange between the high-temperature mixture and the outside during the lifting process, the production string 19 includes an insulated oil pipe 21 disposed above the packer 20, and a plain oil pipe 22 disposed below the packer 20, and the insulated oil pipe 21 and the plain oil pipe 22 are fixedly connected and communicated.
Preferably, to prevent the lift pump 15 and the packer 20 from being damaged in a high temperature environment, the lift pump 15 is a high temperature resistant lift pump 15, and the packer 20 is a high pressure and high temperature resistant retrievable packer 20.
In addition, in the present invention, unless otherwise expressly specified or limited, the terms "connected," "stacked," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The hot dry rock vertical well co-well injection and production method is characterized by comprising the following steps:
a first well building step: building a production vertical well, wherein the production vertical well extends into the hot dry rock reservoir from the overburden;
a second well building step: drilling a plurality of branch wells at the upper well section of the production vertical well, wherein the plurality of branch wells comprise directional well sections and hanging vertical well sections, and the hanging vertical well sections extend into the hot dry rock reservoir;
and (3) injection and production steps: and injecting low-temperature water into the branch well, and pumping out the high-temperature mixture entering the production vertical well through a lifting pump.
2. The hot dry rock vertical well co-injection and production method according to claim 1, wherein the first well building step is specifically as follows:
vertically drilling a production vertical well to a dry hot rock reservoir;
fixing a production casing in the production vertical well for cementing;
and carrying out negative pressure deep penetration perforation completion on the dry hot rock well section of the production vertical well.
3. The dry-hot-rock vertical well injection-production method as claimed in claim 2, wherein the production vertical well comprises a first vertical well section and a second vertical well section, the well depth of the first vertical well section is 400-.
4. The hot dry rock vertical well co-injection and production method according to claim 1, wherein the second well building step specifically comprises the following steps:
drilling a plurality of directional well sections at different positions and heights of the well section on the upper part of the production vertical well;
and drilling a suspended straight well section downwards at the tail end of the directional well section.
5. The hot dry rock vertical well co-injection and production method according to claim 4, wherein adjacent two directional well sections in the plurality of directional well sections are projected to form an included angle of 120 degrees on a vertical cross section of the production vertical well, connecting well mouths of the plurality of directional well sections and the production vertical well are located at different height positions, and the depth of the vertical well section is smaller than that of the production vertical well.
6. The hot dry rock vertical well co-injection production method according to claim 1, wherein the injection production step comprises:
a production pipe column and a lifting pump are put into the production vertical well;
and setting a packer for blocking an annular area at the joint of the dry hot rock reservoir and the overlying strata in the production vertical well, wherein the packer is fixedly sleeved outside the production pipe column and is positioned at the lower position of a wellhead connected with the directional well section and the production vertical well.
7. The hot dry rock vertical well co-injection production method according to claim 6, wherein the production string comprises an insulated tubing disposed above the packer and a plain tubing disposed below the packer, the insulated tubing and the plain tubing being fixedly connected and in communication.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150300327A1 (en) * | 2012-05-09 | 2015-10-22 | Halliburton Energy Services, Inc. | Enhanced Geothermal Systems and Methods |
| CN105840146A (en) * | 2016-04-14 | 2016-08-10 | 中国石油大学(华东) | Method for self-circulation exploitation of geothermal energy of hot dry rock with multilateral well and volume fracturing technologies |
| 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 |
| CN110424928A (en) * | 2019-08-20 | 2019-11-08 | 山东中基圆方能源有限公司 | A kind of efficiently enhanced underground heat note of alternating expression adopts individual well structure and its completion method |
| US20200011151A1 (en) * | 2018-07-04 | 2020-01-09 | Eavor Technologies Inc. | Method for forming high efficiency geothermal wellbores |
| CN111043780A (en) * | 2018-10-11 | 2020-04-21 | 中国石油化工集团公司 | Hydrothermal multi-branch directional mining and grouting geothermal well and construction method |
-
2021
- 2021-08-04 CN CN202110888913.1A patent/CN113513299A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150300327A1 (en) * | 2012-05-09 | 2015-10-22 | Halliburton Energy Services, Inc. | Enhanced Geothermal Systems and Methods |
| CN105840146A (en) * | 2016-04-14 | 2016-08-10 | 中国石油大学(华东) | Method for self-circulation exploitation of geothermal energy of hot dry rock with multilateral well and volume fracturing technologies |
| 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 |
| US20200011151A1 (en) * | 2018-07-04 | 2020-01-09 | Eavor Technologies Inc. | Method for forming high efficiency geothermal wellbores |
| CN111043780A (en) * | 2018-10-11 | 2020-04-21 | 中国石油化工集团公司 | Hydrothermal multi-branch directional mining and grouting geothermal well and construction method |
| CN110424928A (en) * | 2019-08-20 | 2019-11-08 | 山东中基圆方能源有限公司 | A kind of efficiently enhanced underground heat note of alternating expression adopts individual well structure and its completion method |
Non-Patent Citations (1)
| Title |
|---|
| 段云星: "干热岩地热资源开采井网优化数值模拟研究", 《中国优秀硕士学位论文全文数据库 (基础科学)》 * |
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Application publication date: 20211019 |