CN1944950A - Method for recovering sea bottom hydrate by underwell gas and water separation and back injection - Google Patents
Method for recovering sea bottom hydrate by underwell gas and water separation and back injection Download PDFInfo
- Publication number
- CN1944950A CN1944950A CNA200610069870XA CN200610069870A CN1944950A CN 1944950 A CN1944950 A CN 1944950A CN A200610069870X A CNA200610069870X A CN A200610069870XA CN 200610069870 A CN200610069870 A CN 200610069870A CN 1944950 A CN1944950 A CN 1944950A
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- China
- Prior art keywords
- hydrate
- gas
- water
- sea bed
- exploitation
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002347 injection Methods 0.000 title claims description 7
- 239000007924 injection Substances 0.000 title claims description 7
- 238000000926 separation method Methods 0.000 title claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 31
- 239000003345 natural gas Substances 0.000 claims abstract description 13
- 239000008239 natural water Substances 0.000 claims abstract description 3
- 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 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract 1
- 150000004677 hydrates Chemical class 0.000 description 15
- 239000003921 oil Substances 0.000 description 9
- 238000005065 mining Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GMACPFCYCYJHOC-UHFFFAOYSA-N [C].C Chemical compound [C].C GMACPFCYCYJHOC-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000012266 salt solution 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
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
- E21B43/385—Arrangements for separating materials produced by the well in the well by reinjecting the separated materials into an earth formation in the same well
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)
- Earth Drilling (AREA)
Abstract
The process for exploiting hydrate from sea bottom includes the following steps: making the natural gas and water mixed liquid output from single well into the spiral flow channel to turbulize and merge large bubble; exhausting water collected to the outside of the spiral flow channel to oil jacket annular space for downwards back flowing and pumping into stratum with the high pressure pump; and exhausting the natural gas collected to the inside of the spiral flow channel through the oil jacket annular space and the casing exhaust valve to the platform for further treatment. The present invention separates gas from water, reinjects the output liquid to the stratum, and is scientific, environment friendly and suitable for use in large scale exploitation of hydrate from sea bottom.
Description
Technical field
The present invention relates to a kind of gas hydrate mining methods.
Background technology
Along with the huge consumption of petroleum resources, the human great crises that will face petroleum resources in later stage 21 century.Particularly China is as energy consumption big country, and year crude oil import is above 100,000,000 tons.It is stable that the output of domestic onshore oil gas field keeps reluctantly, and the expert estimates to be difficult to have in a short time important breakthrough again.And gas hydrates are favored by the scientist of countries in the world as a kind of alternative energy source.
Gas hydrates are that natural gas mainly is made up of methane, so be also referred to as methane hydrate by the solid state crystallization body of natural gas and the molecular class ice of moisture shape.Have extremely strong combustion force because of containing a large amount of methane gass, can directly burn, be " combustible ice " so be commonly called as again.The energy density of gas hydrates is very high, calculates 1m according to theory
3The saturated natural gas hydrate under standard conditions, can discharge 164m
3Methane gas, be 10 times of other non-conventional gas source rock (such as coal bed gas, black shale) energy density, be 2～5 times of the conventional gas energy density, be equivalent to the energy of 0.164 ton of oil.In addition, the gas hydrates burning only produces carbon dioxide and water, do not pollute the environment, and be a kind of rare clean energy.
The most important thing is that the reserves of gas hydrates are very abundant.According to the stable condition analysis that gas hydrates exist, the area of land 20.7% and big ocean floor 90% has the advantage that forms gas hydrates, estimates that in view of the above the methane carbon content in the global gas hydrates reaches 10
16Kg or contain 20 * 10
15m
3Methane gas, be equivalent to the twice of conventional fossil fuel total carbon reserves such as the known coal in the whole world, oil and natural gas.
The method of the exploitation of gas hydrates that comprehensive various countries scientist proposes, mainly comprise: (1) heating is that steam, hot water, hot salt brine or other hot fluid are pumped into the gas hydrates reservoir, raises by heat transmission, temperature and impels decomposition of hydrate; (2) voltage drop method is by reducing moving of phase equilibrium line that pressure causes that gas hydrates are stable, thereby reaches the purpose of impelling gas hydrates to decompose; (3) chemical agent method, chemical agents such as salt solution, methyl alcohol, ethanol are pumped into the stratum from wellhole after, can change the phase balance condition that hydrate forms, reduce the hydrate equilibrium temperature, cause the decomposition of gas hydrates.More than various production techniques itself limitation is all arranged, big as the heating heat waste, efficient is low, the voltage drop method exploitation rate is slow, chemical agent method expense costliness etc.Be used for from making of above each method, it is uneconomic only adopting a certain method to come exploitation of gas hydrate, has only advantage in conjunction with distinct methods just can reach cost-effective exploitation to gas hydrates.
At present, various countries are just under test about the research of gas hydrates, also do not reach the stage of commercial exploitation.Up to the present, also there be not a kind of the concrete of exploitation of gas hydrate and effective method of can being used for.The actual still controversial Russian Siberian Mai Suoya field of breathing out of having only of putting into production utilizes the method for step-down and injecting inhibitor to produce 20 years.
In addition, in the hydrate manufacturing process, certainly lead to a large amount of water (1 cubic metre of decomposition of hydrate produces 0.8 cubic metre water).Aqueous water will inevitably be a large amount of with natural gas output in pit shaft, water how to handle these outputs economically is still also in the middle of exploring.
In view of above reason, the present invention is on the basis of advantage that takes into full account various gas hydrate mining methods and deficiency, a kind of economy, environmental protection, the process of large scale mining sea bed gas hydrate have efficiently been proposed, for the exploitation of hydrate opens up a new way.
Summary of the invention
The objective of the invention is to provide a kind of economy, environmental protection, can be used for the process of large scale mining sea bed gas hydrate efficiently.
The objective of the invention is to be achieved through the following technical solutions:
Main points of the present invention are to utilize the centrifugation principle, in hydrate withdrawal well down-hole special centrifugal gas anchor are installed, make natural gas and output moisture from, utilize high-pressure pump that water is pumped into the suitable high permeability formation in hydrate layer bottom again.Natural gas under centrifugal action with moisture from after, output is to platform in the oil jacket annular space.
The present invention has utilized the centrifugation principle.Because the difference of density, the suffered centrifugal force of natural gas and water is different in helical field, the centripetal acceleration difference.We make a helical field in the shaft bottom, make output liquid carry out spiral rotation in urceolus and central tube annular space, then natural gas rises along the borehole wall in annular space owing to be subjected to centrifugal force less, and output water descends in the oil jacket annular space, pumps into the stratum after the bottom is inhaled into oil pipe.
The present invention makes full use of the space, down-hole, saves platform space.Gas-water separation is placed on the down-hole carries out, help the platform processes of output liquid, improved the utilization ratio of gas production platform.
The present invention directly pumps into isolated water underground, has saved the process of handling again to platform of returning, and has effectively saved platform space, has simplified gas recovery facility.
The present invention adopts down-hole gas-water separation, output water re-injection technology, has made full use of the space, shaft bottom, and equipment is simple, easy to operate, the science environmental protection, can be applied to extracting hydrate on bottom of sea on a large scale.
Description of drawings
Fig. 1 is the fundamental diagram of the embodiment of the invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Device of the present invention comprises with the lower part:
1, high pressure water-injection pump 2, packer 3, central tube 4, sleeve pipe 5, urceolus (oil pipe)
6, helical flow path 7, steam vent 8, outage 9, inlet opening
As shown in Figure 1, at first utilize the deepwater drilling technology that water injection well is bored the perhydrate layer after, continue to extend to the higher stratum of a certain permeability.Hydrate well section adopts the mode completion of sand control.
The air water mixed liquor enters helical flow path 6 from the central tube of packer 2, quicken turbulent flowization, make minute bubbles pool air pocket, because the difference of air water density, under action of centrifugal force, water collects in the outside of helical flow path 6 gradually, outage 8 through the middle and upper part is discharged in the oil jacket annular space, reflux downwards, advance pump along central tube 3, output water is pumped into the stratum through high pressure water-injection pump 1 through inlet opening 9.Natural gas collects in the helical flow path inboard gradually, after gas cap is formed on the top, handles by oil jacket annular space and sleeve pipe venting valve arrival platform smoothly from the steam vent 7 at top with continuous air-flow.
Claims (5)
1, a kind of method of exploiting sea bed gas hydrate is characterized in that comprising following processing step:
(1) individual well is formed, gas anchor under the down-hole, and carry out the down-hole that is separated in of natural gas and water;
(2) individual well continues to be drilled into height downwards and oozes the stratum, so that the re-injection of output water after drilling hydrate layer;
(3) for improving near the permeability of the hydrate layer of pit shaft, gas recovery well was answered the open flow gas production before notes were adopted, and accelerated decomposition of hydrate, increased near the connectedness of the sand body of pit shaft;
(4) hydrate well section is carried out sand control completion (as gravel pack);
(5) with pump with the direct reinjection into reservoir of isolated output water, conserve space and equipment are avoided environment pollution.
2, the method for exploitation sea bed gas hydrate as claimed in claim 1 is characterized in that: gas anchor under the hydrate recovery well, utilize centrifugal principle to carry out gas-water separation in the down-hole.
3, the method for exploitation sea bed gas hydrate as claimed in claim 1 is characterized in that: in the gas-water separation process, utilize the density variation of air water, centrifugal force different principle during rotation.
4, the method for exploitation sea bed gas hydrate as claimed in claim 1 is characterized in that: hydrate layer sand control installation completion, and to keep off at reservoir producing sand effectively.
5, the method for exploitation sea bed gas hydrate as claimed in claim 1 is characterized in that: output water is with after natural gas separates, and directly reinjection into reservoir has been avoided blowdown in the ocean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610069870XA CN1944950A (en) | 2006-08-09 | 2006-08-09 | Method for recovering sea bottom hydrate by underwell gas and water separation and back injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610069870XA CN1944950A (en) | 2006-08-09 | 2006-08-09 | Method for recovering sea bottom hydrate by underwell gas and water separation and back injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1944950A true CN1944950A (en) | 2007-04-11 |
Family
ID=38044525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200610069870XA Pending CN1944950A (en) | 2006-08-09 | 2006-08-09 | Method for recovering sea bottom hydrate by underwell gas and water separation and back injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1944950A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818635A (en) * | 2010-04-02 | 2010-09-01 | 吉林大学 | Method for exploiting natural gas hydrates by using high-pressure thermal jetting |
| CN103015958A (en) * | 2012-07-23 | 2013-04-03 | 常州大学 | Underground spiral gas-liquid separation and reinjection device as well as reinjection method |
| CN103790566A (en) * | 2013-03-06 | 2014-05-14 | 中国石油天然气股份有限公司 | Three-phase isolation spiral gas and sand anchor |
| CN103857922A (en) * | 2011-08-09 | 2014-06-11 | 三井海洋开发株式会社 | Gas lift system and gas lift method |
| CN103867165A (en) * | 2014-03-14 | 2014-06-18 | 大连理工大学 | Device and method for safely and efficiently exploiting ocean natural gas hydrate through depressurizing decomposition |
| CN103883305A (en) * | 2014-01-20 | 2014-06-25 | 中国石油大学(华东) | Deepwater seabed oil and water separation and reinjection device |
| CN103967473A (en) * | 2014-05-06 | 2014-08-06 | 大连理工大学 | Device and method for desanding of submarine natural gas hydrate exploitation well |
| WO2016133470A1 (en) * | 2015-02-16 | 2016-08-25 | Göksel Osman Zühtü | A system and a method for exploitation of gas from gas-hydrate formations |
| CN106704209A (en) * | 2016-12-22 | 2017-05-24 | 李峰 | Sinking pump for exploiting combustible ice with decompression method |
| CN106761587A (en) * | 2016-11-18 | 2017-05-31 | 青岛海洋地质研究所 | Ocean aleuritic texture reservoir gas hydrates multiple-limb hole finite sand control recovery method |
| CN106762701A (en) * | 2016-12-22 | 2017-05-31 | 李峰 | The immersible pump of combustible ice is exploited for the method that depressurizes |
| CN107461175A (en) * | 2017-09-15 | 2017-12-12 | 中国地质大学（武汉） | A kind of method and apparatus of advance reinforcement deep-sea gas hydrates reservoir |
| CN107620582A (en) * | 2017-08-08 | 2018-01-23 | 广州海洋地质调查局 | Bilayer sleeve sand control completion technique and double-layer anti-sand completion tubular column |
| CN107676057A (en) * | 2016-08-01 | 2018-02-09 | 中国石油化工股份有限公司 | Chemical industry medicament apparatus and method are noted in the water mixing of self-circulation type oil jacket annular space |
| CN107676058A (en) * | 2017-10-11 | 2018-02-09 | 青岛海洋地质研究所 | A kind of ocean gas hydrate mortar replacement exploitation method and quarrying apparatus |
| CN108071367A (en) * | 2018-01-15 | 2018-05-25 | 刘风岐 | Individual well exploits closed recharge construction technology |
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | A kind of injection-production column jacket in coal bed gas well |
| CN108590623A (en) * | 2018-03-19 | 2018-09-28 | 中国石油天然气股份有限公司 | With well re-injection process pipe string and method |
| WO2019010908A1 (en) * | 2017-07-14 | 2019-01-17 | 中国矿业大学 | Fluidized mining method of combustible ice through rotary spraying and pressure relief |
| CN110029982A (en) * | 2019-05-08 | 2019-07-19 | 华东理工大学 | Cementing cyclone separator is broken in rotation |
| CN110284869A (en) * | 2019-06-06 | 2019-09-27 | 泉州市燃气有限公司 | A kind of natural gas extraction impurity separation system |
| CN113027390A (en) * | 2021-04-06 | 2021-06-25 | 中国石油大学(北京) | Hydrate mining method and device |
-
2006
- 2006-08-09 CN CNA200610069870XA patent/CN1944950A/en active Pending
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818635A (en) * | 2010-04-02 | 2010-09-01 | 吉林大学 | Method for exploiting natural gas hydrates by using high-pressure thermal jetting |
| CN101818635B (en) * | 2010-04-02 | 2012-09-12 | 吉林大学 | Method for exploiting natural gas hydrates by using high-pressure thermal jet |
| CN103857922B (en) * | 2011-08-09 | 2016-11-23 | 三井海洋开发株式会社 | Bubble hoisting system and bubble lifting method |
| US9719528B2 (en) | 2011-08-09 | 2017-08-01 | Modec, Inc. | Bubble lift system and bubble lift method |
| CN103857922A (en) * | 2011-08-09 | 2014-06-11 | 三井海洋开发株式会社 | Gas lift system and gas lift method |
| CN103015958A (en) * | 2012-07-23 | 2013-04-03 | 常州大学 | Underground spiral gas-liquid separation and reinjection device as well as reinjection method |
| CN103015958B (en) * | 2012-07-23 | 2015-08-05 | 常州大学 | Underground Spiral gas-liquid separation re-injection device and re-injection method |
| CN103790566A (en) * | 2013-03-06 | 2014-05-14 | 中国石油天然气股份有限公司 | Three-phase isolation spiral gas and sand anchor |
| CN103790566B (en) * | 2013-03-06 | 2016-08-10 | 中国石油天然气股份有限公司 | Three are isolated spiral gas and sand anchor |
| CN103883305A (en) * | 2014-01-20 | 2014-06-25 | 中国石油大学(华东) | Deepwater seabed oil and water separation and reinjection device |
| CN103867165A (en) * | 2014-03-14 | 2014-06-18 | 大连理工大学 | Device and method for safely and efficiently exploiting ocean natural gas hydrate through depressurizing decomposition |
| CN103967473B (en) * | 2014-05-06 | 2017-01-04 | 大连理工大学 | A kind of apparatus and method of exploiting ocean natural gas hydrates well desanding |
| CN103967473A (en) * | 2014-05-06 | 2014-08-06 | 大连理工大学 | Device and method for desanding of submarine natural gas hydrate exploitation well |
| US10927656B2 (en) | 2015-02-16 | 2021-02-23 | Osman Zuhtu Goksel | System and a method for exploitation of gas from gas hydrate formations |
| WO2016133480A1 (en) * | 2015-02-16 | 2016-08-25 | Göksel Osman Zühtü | A system and a method for exploitation of gas from gas hydrate formations |
| WO2016133470A1 (en) * | 2015-02-16 | 2016-08-25 | Göksel Osman Zühtü | A system and a method for exploitation of gas from gas-hydrate formations |
| CN107676057A (en) * | 2016-08-01 | 2018-02-09 | 中国石油化工股份有限公司 | Chemical industry medicament apparatus and method are noted in the water mixing of self-circulation type oil jacket annular space |
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | A kind of injection-production column jacket in coal bed gas well |
| CN106761587A (en) * | 2016-11-18 | 2017-05-31 | 青岛海洋地质研究所 | Ocean aleuritic texture reservoir gas hydrates multiple-limb hole finite sand control recovery method |
| CN106761587B (en) * | 2016-11-18 | 2018-04-20 | 青岛海洋地质研究所 | Ocean aleuritic texture reservoir gas hydrates multiple-limb hole finite sand control recovery method |
| CN106762701A (en) * | 2016-12-22 | 2017-05-31 | 李峰 | The immersible pump of combustible ice is exploited for the method that depressurizes |
| CN106704209A (en) * | 2016-12-22 | 2017-05-24 | 李峰 | Sinking pump for exploiting combustible ice with decompression method |
| CN106762701B (en) * | 2016-12-22 | 2019-01-08 | 嵊州市森创科技有限公司 | For depressurizing the immersible pump of method exploitation combustible ice |
| CN106704209B (en) * | 2016-12-22 | 2018-09-04 | 李峰 | A kind of immersible pump for depressurizing method exploitation combustible ice |
| WO2019010908A1 (en) * | 2017-07-14 | 2019-01-17 | 中国矿业大学 | Fluidized mining method of combustible ice through rotary spraying and pressure relief |
| CN107620582A (en) * | 2017-08-08 | 2018-01-23 | 广州海洋地质调查局 | Bilayer sleeve sand control completion technique and double-layer anti-sand completion tubular column |
| CN107620582B (en) * | 2017-08-08 | 2018-08-03 | 广州海洋地质调查局 | Bilayer sleeve sand control completion technique and double-layer anti-sand completion tubular column |
| CN107461175A (en) * | 2017-09-15 | 2017-12-12 | 中国地质大学（武汉） | A kind of method and apparatus of advance reinforcement deep-sea gas hydrates reservoir |
| CN107461175B (en) * | 2017-09-15 | 2023-06-30 | 中国地质大学（武汉） | Method and device for reinforcing deep sea natural gas hydrate reservoir in advance |
| CN107676058B (en) * | 2017-10-11 | 2019-04-16 | 青岛海洋地质研究所 | A kind of ocean gas hydrate mortar replacement exploitation method and quarrying apparatus |
| CN107676058A (en) * | 2017-10-11 | 2018-02-09 | 青岛海洋地质研究所 | A kind of ocean gas hydrate mortar replacement exploitation method and quarrying apparatus |
| CN108071367A (en) * | 2018-01-15 | 2018-05-25 | 刘风岐 | Individual well exploits closed recharge construction technology |
| CN108590623A (en) * | 2018-03-19 | 2018-09-28 | 中国石油天然气股份有限公司 | With well re-injection process pipe string and method |
| CN110029982A (en) * | 2019-05-08 | 2019-07-19 | 华东理工大学 | Cementing cyclone separator is broken in rotation |
| CN110284869A (en) * | 2019-06-06 | 2019-09-27 | 泉州市燃气有限公司 | A kind of natural gas extraction impurity separation system |
| CN113027390A (en) * | 2021-04-06 | 2021-06-25 | 中国石油大学(北京) | Hydrate mining method and device |
| CN113027390B (en) * | 2021-04-06 | 2022-06-07 | 中国石油大学(北京) | Hydrate mining method and device |
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