CN107476794B - 一种液氮气化循环后注高温氮气增加煤体透气性的方法 - Google Patents
一种液氮气化循环后注高温氮气增加煤体透气性的方法 Download PDFInfo
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- CN107476794B CN107476794B CN201710896755.8A CN201710896755A CN107476794B CN 107476794 B CN107476794 B CN 107476794B CN 201710896755 A CN201710896755 A CN 201710896755A CN 107476794 B CN107476794 B CN 107476794B
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- nitrogen
- liquid nitrogen
- pipe
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- coal body
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 511
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 255
- 239000007788 liquid Substances 0.000 title claims abstract description 126
- 239000007789 gas Substances 0.000 title claims abstract description 82
- 239000003245 coal Substances 0.000 title claims abstract description 76
- 230000035699 permeability Effects 0.000 title claims abstract description 26
- 238000002309 gasification Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000005553 drilling Methods 0.000 claims abstract description 45
- 238000005086 pumping Methods 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 39
- 239000007924 injection Substances 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 230000003313 weakening effect Effects 0.000 claims abstract description 11
- 230000008014 freezing Effects 0.000 claims abstract description 8
- 238000007710 freezing Methods 0.000 claims abstract description 8
- 238000010992 reflux Methods 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 36
- 238000010276 construction Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 238000010257 thawing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 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
- 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
-
- 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
- E21B43/006—Production of coal-bed methane
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical & Material Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
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CN201710896755.8A CN107476794B (zh) | 2017-09-28 | 2017-09-28 | 一种液氮气化循环后注高温氮气增加煤体透气性的方法 |
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CN201710896755.8A CN107476794B (zh) | 2017-09-28 | 2017-09-28 | 一种液氮气化循环后注高温氮气增加煤体透气性的方法 |
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CN107476794A CN107476794A (zh) | 2017-12-15 |
CN107476794B true CN107476794B (zh) | 2019-05-07 |
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CN201710896755.8A Active CN107476794B (zh) | 2017-09-28 | 2017-09-28 | 一种液氮气化循环后注高温氮气增加煤体透气性的方法 |
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Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108590740A (zh) * | 2018-04-25 | 2018-09-28 | 中国矿业大学(北京) | 一种磁化水改变瓦斯吸附结构的瓦斯抽放方法 |
CN108756836B (zh) * | 2018-05-29 | 2024-01-26 | 西安科技大学 | 一种煤矿井下注液氮增透瓦斯抽采*** |
CN109854210A (zh) * | 2019-03-05 | 2019-06-07 | 重庆大学 | 采用液氮和蒸汽致裂煤层的瓦斯抽采方法及抽采*** |
CN109779597B (zh) * | 2019-03-06 | 2022-09-13 | 绍兴文理学院 | 利用液氮弱化煤体实现冲击地压灾害防控的方法和*** |
CN110984941B (zh) * | 2019-11-08 | 2022-05-27 | 中国石油大学(华东) | 用于天然气水合物储层的液态二氧化碳压裂改造的方法 |
CN111119829B (zh) * | 2019-12-20 | 2021-07-23 | 中国矿业大学 | 一种利用液氮冷冲击及相变气体循环损伤的煤层增透方法 |
CN112031858B (zh) * | 2020-10-12 | 2022-05-13 | 黑龙江科技大学 | 一种用于在煤层中形成瓦斯水合物的合成装置 |
CN112412418A (zh) * | 2020-11-05 | 2021-02-26 | 河南理工大学 | 用于低渗透性煤层的冷冻致裂协同水力冲孔增透促抽方法 |
CN112412415B (zh) * | 2020-11-05 | 2022-11-04 | 河南理工大学 | 水力冲孔、冷冻致裂和注热激励协同增透促抽方法 |
CN112412421B (zh) * | 2020-11-05 | 2022-12-02 | 河南理工大学 | 穿层钻孔注热协同水力冲孔强化促抽方法 |
CN114607337B (zh) * | 2022-03-09 | 2023-08-25 | 中国石油大学(北京) | 一种煤层气井液氮-氮气-水复合压裂方法 |
Citations (6)
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CN102352768A (zh) * | 2011-10-19 | 2012-02-15 | 中国矿业大学 | 一种抽压交替的瓦斯抽采方法及设备 |
CN102562023A (zh) * | 2012-03-06 | 2012-07-11 | 中国矿业大学 | 一种温压惰性气体增加煤体透气性的*** |
CN105136837A (zh) * | 2015-07-24 | 2015-12-09 | 中国矿业大学 | 一种煤岩样品液氮循环冻融增透模拟试验***及方法 |
CN106337672A (zh) * | 2016-10-25 | 2017-01-18 | 中国矿业大学 | 一种循环脉冲式低温冻融增透煤体抽采煤层气的方法 |
CN106968705A (zh) * | 2017-05-10 | 2017-07-21 | 河南理工大学 | 一种煤层抽采钻孔热冷冲击破煤增透装置及增透方法 |
CN107100664A (zh) * | 2017-05-10 | 2017-08-29 | 河南理工大学 | 一种热冷交替破煤增透瓦斯强化抽采***与方法 |
Family Cites Families (1)
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CA2538936A1 (en) * | 2006-03-03 | 2007-09-03 | Dwight N. Loree | Lpg mix frac |
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- 2017-09-28 CN CN201710896755.8A patent/CN107476794B/zh active Active
Patent Citations (6)
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CN102352768A (zh) * | 2011-10-19 | 2012-02-15 | 中国矿业大学 | 一种抽压交替的瓦斯抽采方法及设备 |
CN102562023A (zh) * | 2012-03-06 | 2012-07-11 | 中国矿业大学 | 一种温压惰性气体增加煤体透气性的*** |
CN105136837A (zh) * | 2015-07-24 | 2015-12-09 | 中国矿业大学 | 一种煤岩样品液氮循环冻融增透模拟试验***及方法 |
CN106337672A (zh) * | 2016-10-25 | 2017-01-18 | 中国矿业大学 | 一种循环脉冲式低温冻融增透煤体抽采煤层气的方法 |
CN106968705A (zh) * | 2017-05-10 | 2017-07-21 | 河南理工大学 | 一种煤层抽采钻孔热冷冲击破煤增透装置及增透方法 |
CN107100664A (zh) * | 2017-05-10 | 2017-08-29 | 河南理工大学 | 一种热冷交替破煤增透瓦斯强化抽采***与方法 |
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Title |
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Address after: 221018 Jiangsu Province, Xuzhou City Yunlong District No. 2 Lishui Road Patentee after: Xuzhou University of Technology Address before: 221000 Jiangsu province Xuzhou Quanshan District South 3rd Ring Rd No. 18 Xuzhou Institute of Technology University of science and Technology Park (Xuzhou City, 2.5 Industrial Park) Patentee before: Xuzhou University of Technology |
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Application publication date: 20171215 Assignee: Xuzhou Runyue Network Technology Co.,Ltd. Assignor: XUZHOU University OF TECHNOLOGY Contract record no.: X2023320000181 Denomination of invention: A method for increasing coal permeability by injecting high-temperature nitrogen gas after liquid nitrogen gasification cycle Granted publication date: 20190507 License type: Common License Record date: 20230731 |