CN212390640U - Directional branch well device of middle-deep geothermal recharge well - Google Patents
Directional branch well device of middle-deep geothermal recharge well Download PDFInfo
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- CN212390640U CN212390640U CN202021032110.3U CN202021032110U CN212390640U CN 212390640 U CN212390640 U CN 212390640U CN 202021032110 U CN202021032110 U CN 202021032110U CN 212390640 U CN212390640 U CN 212390640U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000004568 cement Substances 0.000 claims abstract description 5
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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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 utility model provides a directional branch well device of well is irritated back to middle and deep layer geothermal, including the recharging pipeline, the outside cover of recharging pipeline is equipped with the sleeve pipe, sheathed tube outside stratum temperature is less than 30 ℃ the position and is equipped with the heat preservation, the outside of heat preservation is located recharging water layer upper portion position and is equipped with cement well cementation layer, sheathed tube lower extreme water layer department is equipped with the bleeder, sheathed tube outer wall between the adjacent water layer is equipped with the waterstop, control non-recharging layer is to the influence of recharging factor, sleeve pipe and bleeder are located all to bore on the outer wall of water layer and are equipped with the hole pipe, perpendicular hole pipe outer wall and well bottommost water layer position are equipped with the gravel layer, transport passageway through the better formation underground tail water recharging of gravel packs, increase recharging well result of use. One geothermal well is adopted to meet the requirement of the whole recharge of the deep geothermal tail water. The problem of well site's restriction has been solved, the quantity problem of having reduced many ground heat recharge well has reduced the total cost of engineering.
Description
Technical Field
The utility model relates to a middle-deep geothermal heating system especially relates to a directional branch well device of middle-deep geothermal recharging well that is used for middle-deep geothermal well tail water recharging.
Background
The deep geothermal heating system is widely applied to a northern clean energy heating system at present, and the condition that the deep geothermal tail water is completely recharged is the premise of the application of the current deep geothermal heating system. The problem that the geothermal tail water recharging efficiency is reduced due to the fact that fine particles are transported and reside in the stratum along with water flow and a recharging tail water transport channel is blocked is the main reason that geothermal tail water cannot meet the requirements of all recharging. The most key factor for solving the problem is to increase the recharge area of the recharge tail water, the current solution in the prior art is mainly to increase the flow cross section area of the recharge water by increasing the number of recharge vertical wells, a 1-mining and multi-recharging pattern is formed, and the number of recharge wells is not only increased in total construction cost, but also is not suitable for well sites of drilling positions and is the most important restriction factor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme to realize: a directional branch well device of a medium-deep geothermal recharging well comprises a recharging pipeline, wherein a sleeve is sleeved on the outer side of the recharging pipeline, a heat-insulating layer is arranged at the position, where the temperature of the stratum outside the sleeve is lower than 30 ℃, of the sleeve, the heat-insulating layer is used for reducing the dissipation of the temperature of deep geothermal tail water, the sleeve with heat insulation is adopted at the position, where the temperature of the stratum is lower than 30 ℃, of the sleeve, a cement well fixing layer is arranged at the position, located at the upper part of a water layer, of the outer side of the heat-insulating layer, a branch pipe is arranged at the position of a water layer at the lower end of the sleeve, a water stop belt is arranged on the outer wall of the sleeve between adjacent water layers, the influence of a non-recharging layer on recharging factors is controlled, vertical hole pipes are drilled on the outer walls, located on the water layers, gravel filling layers are arranged on the outer walls of the vertical.
The utility model has the advantages that: one geothermal well can be adopted to satisfy the whole recharge of the tail water of the intermediate-deep geothermal energy. The problem of well site's restriction has been solved, the quantity problem of having reduced many ground heat recharge well has reduced the total cost of engineering.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following describes an embodiment of the present invention with reference to fig. 1.
As shown in figure 1, the directional branch well device of the medium-deep geothermal recharging well comprises a recharging pipeline 1, wherein a sleeve 2 is sleeved outside the recharging pipeline 1, a heat-insulating layer 3 is arranged at the position, with the temperature of the stratum at the outer side lower than 30 ℃, of the sleeve 2, a cement well-fixing layer 4 is arranged at the position, with the outer side located at the upper part of a water layer, of the heat-insulating layer 3, a branch pipe 5 is arranged at the lower end of the sleeve 2, a water stop belt 6 is arranged on the outer wall of the sleeve 2 between adjacent water layers, vertical hole pipes 7 are drilled on the well walls, with the sleeve 2 and the branch pipes 5 located,
The working principle is as follows: the deep geothermal recharging well device adopts a branch well to drill, adopts a ground well mouth, adopts a directional branch method to drill in different directions at the bottom of the well, adopts geological data of a water-taking well to horizontally drill in a water-taking layer of the water-taking well, adopts a hole pipe 7 with a rotary cutting direction for the horizontal drilling part, adopts the hole pipe 7 with the rotary cutting direction for the casing pipe 2 which vertically passes through the water layer part and fills gravel at the water layer part of the outer wall, forms a transportation channel for recharging underground tail water better by filling gravel, increases the using effect of the recharging well, and utilizes a water stop 6 to block the recharging factor when the horizontal drilling part is separated from the water layer and enters a second water layer at the mud layer passing part, thereby controlling the influence of the non-recharging layer on the recharging factor.
Because the temperature of the deep geothermal tail water is 30 ℃, in order to reduce the loss of the temperature of the intermediate geothermal tail water, the heat preservation layer 3 is adopted to preserve the heat of the sleeve 2 at the position where the formation temperature is lower than 30 ℃.
In order to prolong the service life of the recharge well and eliminate the influence of a non-recharge layer, the upper part of the whole recharge water layer is completely cemented by a cement cementing layer 4.
The working process is as follows: the recharge water is conveyed into the recharge well through the pipeline 1 and is recharged to the water layer through the branch pipes 5, so that the discharge efficiency of the recharge water is improved.
Claims (1)
1. A directional branch well device of a middle-deep geothermal recharging well is characterized in that: including recharging pipeline (1), the outside cover of recharging pipeline (1) is equipped with sleeve pipe (2), the outside stratum temperature of sleeve pipe (2) is less than 30 ℃ the position and is equipped with heat preservation (3), the outside of heat preservation (3) is located water layer upper portion position and is equipped with cement well cementation layer (4), the lower extreme of sleeve pipe (2) is selected better water layer department and is equipped with bleeder (5), the outer wall of sleeve pipe (2) between the adjacent water layer is equipped with waterstop (6), sleeve pipe (2) and bleeder (5) all bore on being located the outer wall of water layer and are equipped with perpendicular pore pipe (7), perpendicular pore pipe (7) outer wall and well bottommost outer wall water layer position are equipped with gravel pack layer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021032110.3U CN212390640U (en) | 2020-06-08 | 2020-06-08 | Directional branch well device of middle-deep geothermal recharge well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021032110.3U CN212390640U (en) | 2020-06-08 | 2020-06-08 | Directional branch well device of middle-deep geothermal recharge well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212390640U true CN212390640U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021032110.3U Active CN212390640U (en) | 2020-06-08 | 2020-06-08 | Directional branch well device of middle-deep geothermal recharge well |
Country Status (1)
| Country | Link |
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| CN (1) | CN212390640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151054A (en) * | 2021-12-20 | 2022-03-08 | 邯郸市伟业地热开发有限公司 | Well drilling construction method for increasing yield and recharge quantity of geothermal well |
-
2020
- 2020-06-08 CN CN202021032110.3U patent/CN212390640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151054A (en) * | 2021-12-20 | 2022-03-08 | 邯郸市伟业地热开发有限公司 | Well drilling construction method for increasing yield and recharge quantity of geothermal well |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231108 Address after: 257000 Dongying Technology Enterprise Accelerator E2-4-076, north of Huanghe Road and west of Guihua Fifth Road, Dongying District, Dongying City, Shandong Province Patentee after: Shandong Mingbang Power Technology Co.,Ltd. Address before: 257100 north of Huanghe Road and west of Guihua fifth road, Dongying District, Dongying City, Shandong Province Patentee before: DONGYING MINGHUI NEW ENERGY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |