CN104632163A - Natural gas hydrate mining method capable of preventing accidents such as blowout, mine collapse and subsidence - Google Patents
Natural gas hydrate mining method capable of preventing accidents such as blowout, mine collapse and subsidence Download PDFInfo
- Publication number
- CN104632163A CN104632163A CN201510027791.1A CN201510027791A CN104632163A CN 104632163 A CN104632163 A CN 104632163A CN 201510027791 A CN201510027791 A CN 201510027791A CN 104632163 A CN104632163 A CN 104632163A
- Authority
- CN
- China
- Prior art keywords
- gas hydrate
- well
- natural gas
- spoiling
- sedimentation
- 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
- 238000000034 method Methods 0.000 title claims abstract description 41
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000005065 mining Methods 0.000 title claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003345 natural gas Substances 0.000 claims abstract description 11
- 230000006837 decompression Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 14
- 150000004677 hydrates Chemical class 0.000 claims description 14
- 230000005284 excitation Effects 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 3
- 238000010494 dissociation reaction Methods 0.000 claims description 3
- 230000005593 dissociations Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007725 thermal activation Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution 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
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention belongs to the technical field of natural gas mining, particularly relates to a natural gas hydrate mining method capable of preventing accidents such as blowout, mine collapse and subsidence. In order to fulfill the benefits of a mine and reduce accidents happened in the process of natural gas hydrate mining, stable yield, high yield and guarantee of the benefits of the mine can be achieved through combining thermal activation mining and decompression method mining, the safety production of the mine can be guaranteed through cover layers and water injection backfill, and the natural gas hydrate mining method capable of preventing the accidents such as blowout, mine collapse and subsidence is provided.
Description
Technical field
The invention belongs to exploitation of gas hydrates technical field, be specifically related to a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident.
Background technology
Along with petering out of conventional oil natural gas energy resource, the mankind just constantly make great efforts to tap a new source of energy, the advantages such as widely distributed, the stock number of gas hydrates is large, it is shallow to bury, energy density is high, clean obtain the attention of more and more national, and gas hydrates are acknowledged as the important alternative energy with good prospect.
Thermal excitation utilizes drilling technique pipe laying in gas hydrates stabilized zone, heats the stratum containing gas hydrates, improves hydrate zone layer temperature, destroy the hydrogen bond in hydrate, thus cause the decomposition of gas hydrates.Mainly steam, hot water, hot salt brine or other hot fluids are pumped into hydrate formation from ground, the fire flooding that uses or utilize brick post heater when also can adopt exploitation heavy oil, facts have proved, wherein most effective method is microwave heating method.
The step-down production technique of gas hydrates is the decomposition being impelled gas hydrates by the movement of the stable phase equilibrium line of reduction pressure strong-willed natural gas hydration.Consumption and the loss of pressure drop production of water compound empty calory is adopted compared with temperature activation method.
Summary of the invention
The present invention is a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident.Combined with the exploitation of decompression method by thermal excitation exploitation, reach stable and high yields and ensure the benefit of mine, be ensure that the safety in production of mine by the cap rock of structure and water filling backfill.
Technical solution of the present invention is as follows:
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, high-temperature high-pressure steam is injected to natural gas hydrate stability zone (HSZ), shut-in well, the pressure changing that causes of monitor well internal cause gas hydrate dissociation, drive a well to collect natural gas when reaching certain pressure (within the scope of the safe pressure-bearing of sleeve pipe).
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, certain space is formed at natural gas hydrate stability zone (HSZ), the exploitation of recycling decompression method after utilizing thermal excitation (steam injection) to exploit a period of time.
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, decompression method exploitation of gas hydrate along with the space be decomposed to form of gas hydrates increasing, steamed well is changed into water injection well with reach natural gas stable yields and backfill prevent blowout well from spoiling the generation of sedimentation accident.
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, in order to the stratigraphic structure cap rock occurred in above distance natural gas hydrate stability zone preventing blowout well in exploitation of gas hydrates process from spoiling sedimentation accident.
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, throttling arrangement under cap rock mounting shaft, realizes reducing pressure by regulating flow in down-hole, the heating of recycling Formation heat, prevents from being formed hydrate in pit shaft and to result in blockage problem.
The advantage of invention
The present invention can the collection natural gas of highly effective and safe, the method exploitation of gas hydrate combined with the exploitation of decompression method by thermal excitation exploitation not only reduce thermal excitation exploit in energy cost, and decrease blowout well in production process of natural gas spoil the generation of sedimentation accident by water filling backfill, to the exploitation of China's natural gas hydrate, there is great economy, environmental value.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is a kind of gas hydrate mining methods intention preventing blowout well from spoiling sedimentation accident;
Detailed description of the invention
Below in conjunction with drawings and the embodiments, patent of the present invention is described in further detail: patent of the present invention is specifically related to a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, it is characterized in that: inject high-temperature high-pressure steam to natural gas hydrate stability zone (HSZ), shut-in well, the pressure changing that causes of monitor well internal cause gas hydrate dissociation, drive a well to collect natural gas when reaching certain pressure (within the scope of the safe pressure-bearing of sleeve pipe).
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, it is characterized in that: after utilizing thermal excitation (steam injection) to exploit a period of time, form certain space at natural gas hydrate stability zone (HSZ), the exploitation of recycling decompression method.
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, it is characterized in that: decompression method exploitation of gas hydrate along with the space be decomposed to form of gas hydrates increasing, steamed well is changed into water injection well and prevents blowout well from spoiling the generation of sedimentation accident with the stable yields and backfill that reach natural gas.
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, is characterized in that: in order to the stratigraphic structure cap rock occurred in above distance natural gas hydrate stability zone preventing blowout well in exploitation of gas hydrates process from spoiling sedimentation accident.
Described a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, it is characterized in that: throttling arrangement under cap rock mounting shaft, realize reducing pressure by regulating flow in down-hole, the heating of recycling Formation heat, prevent from being formed hydrate in pit shaft and to result in blockage problem.
Claims (5)
1. the gas hydrate mining methods preventing blowout well from spoiling sedimentation accident, it is characterized in that: inject high-temperature high-pressure steam to natural gas hydrate stability zone (HSZ), shut-in well, the pressure changing that causes of monitor well internal cause gas hydrate dissociation, drive a well to collect natural gas when reaching certain pressure (within the scope of the safe pressure-bearing of sleeve pipe).
2. a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident as claimed in claim 1, it is characterized in that: after utilizing thermal excitation (steam injection) to exploit a period of time, form certain space at natural gas hydrate stability zone (HSZ), the exploitation of recycling decompression method.
3. a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident as claimed in claim 2, it is characterized in that: decompression method exploitation of gas hydrate along with the space be decomposed to form of gas hydrates increasing, steamed well is changed into water injection well and prevents blowout well from spoiling the generation of sedimentation accident with the stable yields and backfill that reach natural gas.
4. a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident as claimed in claim 3, is characterized in that: in order to the stratigraphic structure cap rock occurring in above distance natural gas hydrate stability zone preventing blowout well in exploitation of gas hydrates process from spoiling sedimentation accident.
5. a kind of gas hydrate mining methods preventing blowout well from spoiling sedimentation accident as claimed in claim 4, it is characterized in that: throttling arrangement under cap rock mounting shaft, realize reducing pressure by regulating flow in down-hole, the heating of recycling Formation heat, prevent from being formed hydrate in pit shaft and to result in blockage problem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510027791.1A CN104632163A (en) | 2015-01-20 | 2015-01-20 | Natural gas hydrate mining method capable of preventing accidents such as blowout, mine collapse and subsidence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510027791.1A CN104632163A (en) | 2015-01-20 | 2015-01-20 | Natural gas hydrate mining method capable of preventing accidents such as blowout, mine collapse and subsidence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104632163A true CN104632163A (en) | 2015-05-20 |
Family
ID=53211342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510027791.1A Pending CN104632163A (en) | 2015-01-20 | 2015-01-20 | Natural gas hydrate mining method capable of preventing accidents such as blowout, mine collapse and subsidence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104632163A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050214A (en) * | 2016-06-17 | 2016-10-26 | 伍丕济 | Exploitation method of combustible ice |
| CN107435531A (en) * | 2017-09-15 | 2017-12-05 | 中国地质大学（武汉） | A kind of method and apparatus that deep-sea gas hydrates reservoir is reinforced based on churning method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050092482A1 (en) * | 2003-11-04 | 2005-05-05 | Charles Wendland | System for extracting natural gas hydrate |
| CN101672177A (en) * | 2009-09-28 | 2010-03-17 | 中国海洋石油总公司 | Exploitation method for sea bed gas hydrate |
| CN103277072A (en) * | 2013-05-16 | 2013-09-04 | 李贤明 | Method and system for exploiting seabed natural gas hydrate |
| CN103603638A (en) * | 2013-11-13 | 2014-02-26 | 大连理工大学 | Natural gas hydrate CO2 substitution extraction method combined with depressurization |
-
2015
- 2015-01-20 CN CN201510027791.1A patent/CN104632163A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050092482A1 (en) * | 2003-11-04 | 2005-05-05 | Charles Wendland | System for extracting natural gas hydrate |
| CN101672177A (en) * | 2009-09-28 | 2010-03-17 | 中国海洋石油总公司 | Exploitation method for sea bed gas hydrate |
| CN103277072A (en) * | 2013-05-16 | 2013-09-04 | 李贤明 | Method and system for exploiting seabed natural gas hydrate |
| CN103603638A (en) * | 2013-11-13 | 2014-02-26 | 大连理工大学 | Natural gas hydrate CO2 substitution extraction method combined with depressurization |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050214A (en) * | 2016-06-17 | 2016-10-26 | 伍丕济 | Exploitation method of combustible ice |
| CN106050214B (en) * | 2016-06-17 | 2019-03-29 | 伍丕济 | The recovery method of combustible ice |
| CN107435531A (en) * | 2017-09-15 | 2017-12-05 | 中国地质大学（武汉） | A kind of method and apparatus that deep-sea gas hydrates reservoir is reinforced based on churning method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |