CN101864937A - Process for exploiting ocean gas hydrate by utilizing terrestrial heat - Google Patents
Process for exploiting ocean gas hydrate by utilizing terrestrial heat Download PDFInfo
- Publication number
- CN101864937A CN101864937A CN201010175633A CN201010175633A CN101864937A CN 101864937 A CN101864937 A CN 101864937A CN 201010175633 A CN201010175633 A CN 201010175633A CN 201010175633 A CN201010175633 A CN 201010175633A CN 101864937 A CN101864937 A CN 101864937A
- Authority
- CN
- China
- Prior art keywords
- gas
- seawater
- gas hydrate
- utilizing
- rock stratum
- 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
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to a process for exploiting ocean gas hydrate by utilizing terrestrial heat, comprising the following steps: 1) digging a branch well on a target hot rock stratum; 2) utilizing a casing to penetrate through gas hydrate treasure, digging a directional well on the target hot rock stratum, perforating the casing penetrating through the gas hydrate treasure, and sealing the mouth of the well; 3) pressing seawater into the target hot rock stratum by utilizing a pump, pressing the seawater into the directional well after heat exchange heating, leading the seawater into the area of the gas hydrate treasure from the perforation of the casing, and obtaining decomposed gas hydrate and cooled seawater; and 4) transporting the gas hydrate and the cooled seawater to a sea surface by utilizing a gas-liquid recycling tube, separating the gas hydrate from the cooled seawater at an outlet, and collecting natural gas. The invention has the beneficial effect that the invention greatly reduces the heat injection cost in the exploration process, causes the exploration process to continuously develop and has less pollution and damage on environment, and each technical index in the exploration process can refer to the existing petroleum exploration process so as to lower difficulty for realizing the exploration process.
Description
Technical field
The present invention relates to a kind of technology of utilizing the underground heat exploiting ocean gas hydrate.
Background technology
Since the nearly century, traditional energies such as oil and coal are with approach exhaustion, yet people but are growing on and on to the demand of the energy.Characteristics such as gas hydrates are huge because of its reserves, energy density is high, distribution is wide, scale is big are considered to optimal alternative energy source of 21 century.Solved its mining problem but have only, gas hydrates just can become a kind of real energy.Through long term studies, industry has proposed more typical traditional mining type in three: temperature activation method, decompression method and chemical inhibitor injection method, however these mining types all exist some can not satisfy the defective of commercial exploitation.Temperature activation method efficient is low, and heating region is little, and energy consumption is big; For the decompression method, have only to hide just to have economic feasibility when being positioned near the temperature and pressure equilibrium boundary when natural gas hydrate, because decomposing, the natural gas hydration has self-protective, the decompression method is decomposed after a period of time speed and is slowed down even stop to decompose; The chemical inhibitor injection method is slow to the effect of gas hydrates layer, and required chemical agent expense is very high, also can bring some poor environment problems, studies show that China's South Sea sea bed gas hydrate and geothermal energy resources are all very abundant, how rationally effectively to develop this type of resource, become the focus that the researcher pays close attention to.
Summary of the invention
Problem to be solved by this invention is to propose a kind of technology of utilizing the underground heat exploiting ocean gas hydrate at above-mentioned prior art, energy conservation, and little to environment damage, feasibility is strong.
The present invention for the solution that problem adopted of the above-mentioned proposition of solution is: utilize the technology of underground heat exploiting ocean gas hydrate, it is characterized in that including following steps:
1) digs a branch well toward the hot rock stratum of target earlier: use hydrofracturing method, make the hot formation area of target form the rock fracture that is interconnected;
2) utilize sleeve pipe to pass gas hydrates and hide, dig a directional well, the sleeve pipe of hiding through gas hydrates is carried out perforation, seal well head then toward the hot rock stratum of target;
3) with pump seawater is pressed into the hot rock stratum of target, seawater is pressed in the directional well after the interchange of heat heating, flow into the zone that gas hydrates are hidden at the perforation place of sleeve pipe, for the decomposition of gas hydrates provides hot sea water, the gas hydrates after obtaining decomposing and the seawater of cooling;
4) gas hydrates after the decomposition that step 3) is obtained and the seawater of cooling are transported to the sea through gas-liquid recovery pipe, in the exit gas-liquid separator separates, collect natural gas.
Press such scheme, described directional well is the 3-5 mouth.
Press such scheme, the bottom of described directional well interlocks with slotted casing, with the protection borehole wall.
Beneficial effect of the present invention is:
Compose in the seabed has abundant gas hydrates resource, and also there are a large amount of geothermal energy resources the depths, seabed simultaneously.Utilize the geothermal energy resources in seabed self to come exploitation of gas hydrate, can greatly reduce the heat injection cost in the recovery process, can make the recovery process sustainable development, little to environmental disruption and pollution, every technical requirements in the recovery process can reduce the difficulty that production practice is realized with reference at existing process for petroleum recovery.
Description of drawings
Fig. 1 is the underground heat process for exploiting ocean gas hydrate schematic diagram that utilizes of the present invention.
The specific embodiment
Be described in further detail the present invention below in conjunction with accompanying drawing by embodiment, but embodiment can not be construed as limiting the invention.
As shown in Figure 1; dig a branch well 8 toward the hot rock stratum 6 of target earlier; use hydrofracturing method commonly used in the oil exploitation; make the target formation area form the rock fracture that is interconnected in a large number; create the passage that fluid freely circulates; strengthen heat transfer area; obtain good heat exchange effect; for temperature activation method provides sufficient hot sea water; utilize sleeve pipe 4 to pass gas hydrates then and hide 3; make three mouthfuls of directional wells 5 (end available slotted casing in shaft bottom interlocks with the protection borehole wall) toward the hot rock stratum of target, again the sleeve pipe of hiding through gas hydrates is carried out perforation, seal well head 9 then.With pump 1 seawater is pressed into the hot rock stratum of target by seawater ascending pipe 7, seawater is pressed in the directional well 5 after the interchange of heat heating, flow into territory, gas hydrates Tibetan area at perforation 10 places, for the decomposition of gas hydrates provides hot sea water endlessly, the natural gas after the decomposition and the seawater of cooling are transported to the sea through gas-liquid recovery pipe, separate gas and liquid in the exit with gas-liquid separator 2, collect natural gas, Mare Frigoris water directly enters marine.
This technology equipment therefor mainly comprises compositions such as (1) water injecting pump, (2) seawater ascending pipe, (3) hot sea water input pipe, (4) gas-liquid recovery pipe, (5) gas-liquid separator.
(1) water injecting pump
Water injecting pump is directly taken out seawater and is pumped in the seawater ascending pipe, and provides certain pressure to satisfy the seawater needs that circulate in system.
(2) seawater ascending pipe
The main effect of seawater ascending pipe is to inject seawater in the hot rock stratum of target, makes the seawater heating that circulates in rock fracture.
(3) hot sea water input pipe
Flow into hot sea water input pipe (being directional well) in the hot formation rock of target crack under the effect of heated seawater at pressure, then at the perforation place of sleeve pipe, hot sea water flows into territory, gas hydrates Tibetan area;
(4) gas-liquid recovery pipe
Add the natural G﹠W that thermal decomposition generates and the seawater that is cooled is drawn into the sea working platform through gas-liquid recovery pipe through hot sea water;
(5) gas-liquid separator
The gas-liquid mixture that is drawn into the sea working platform becomes natural gas and seawater through gas-liquid separator separates.
Claims (3)
1. utilize the technology of underground heat exploiting ocean gas hydrate, it is characterized in that including following steps:
1) digs a branch well toward the hot rock stratum of target earlier: use hydrofracturing method, make the hot formation area of target form the rock fracture that is interconnected;
2) utilize sleeve pipe to pass gas hydrates and hide, dig a directional well, the sleeve pipe of hiding through gas hydrates is carried out perforation, seal well head then toward the hot rock stratum of target;
3) with pump seawater is pressed into the hot rock stratum of target, seawater is pressed in the directional well after the interchange of heat heating, flow into the zone that gas hydrates are hidden at the perforation place of sleeve pipe, for the decomposition of gas hydrates provides hot sea water, the gas hydrates after obtaining decomposing and the seawater of cooling;
4) gas hydrates after the decomposition that step 3) is obtained and the seawater of cooling are transported to the sea through gas-liquid recovery pipe, in the exit gas-liquid separator separates, collect natural gas.
2. by the described technology of utilizing the underground heat exploiting ocean gas hydrate of claim 1, it is characterized in that described directional well is the 3-5 mouth.
3. by claim 1 or the 2 described technologies of utilizing the underground heat exploiting ocean gas hydrate, it is characterized in that the bottom of described directional well interlocks with slotted casing, with the protection borehole wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175633A CN101864937A (en) | 2010-05-11 | 2010-05-11 | Process for exploiting ocean gas hydrate by utilizing terrestrial heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175633A CN101864937A (en) | 2010-05-11 | 2010-05-11 | Process for exploiting ocean gas hydrate by utilizing terrestrial heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101864937A true CN101864937A (en) | 2010-10-20 |
Family
ID=42956843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010175633A Pending CN101864937A (en) | 2010-05-11 | 2010-05-11 | Process for exploiting ocean gas hydrate by utilizing terrestrial heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101864937A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322250A (en) * | 2011-08-18 | 2012-01-18 | 中国石油天然气股份有限公司 | Gas injection auxiliary electric heating oil shale in-situ mining simulation device and system |
| CN102322245A (en) * | 2011-05-26 | 2012-01-18 | 上海交通大学 | Gas hydrate exploitation device |
| CN102704902A (en) * | 2012-05-30 | 2012-10-03 | 中国石油大学(华东) | Natural gas hydrate exploiting method |
| CN103046930A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103206199A (en) * | 2013-04-15 | 2013-07-17 | 中国石油大学(华东) | Device and method for exploiting natural gas hydrates by means of thermal fluid fracturing |
| WO2013120260A1 (en) * | 2012-02-15 | 2013-08-22 | 四川宏华石油设备有限公司 | Shale gas production method |
| CN104806205A (en) * | 2015-05-12 | 2015-07-29 | 吉林大学 | Method for exploiting terrestrial natural gas hydrate |
| CN105003237A (en) * | 2015-06-11 | 2015-10-28 | 中国石油大学(华东) | Apparatus and method for integrated processing of natural gas hydrate exploitation by geothermy and waste CO2 reinjection |
| CN105275436A (en) * | 2015-11-10 | 2016-01-27 | 青岛海洋地质研究所 | Natural gas acquiring device and method |
| CN106884628A (en) * | 2017-03-29 | 2017-06-23 | 中国石油大学(华东) | Joint underground heat and CO2Replacement exploitation Gas Hydrate In Sea Areas method and system |
| CN106948795A (en) * | 2017-03-30 | 2017-07-14 | 中国石油大学(北京) | A kind of method that multi-branched horizontal well closed cycle develops hot water type underground heat |
| CN107143313A (en) * | 2017-07-14 | 2017-09-08 | 中国石油大学(华东) | A kind of water filling exploitation of geothermal energy and hydrate are hidden simultaneously well construction design and method |
| CN107178344A (en) * | 2017-07-14 | 2017-09-19 | 中国石油大学(华东) | One kind injection CO2The method for employing geothermal energy development gas hydrates |
| CN107269254A (en) * | 2017-07-14 | 2017-10-20 | 中国石油大学(华东) | A kind of well group structures and methods using ground die mould geothermal energy extracting hydrate on bottom of sea |
| CN108005626A (en) * | 2017-11-27 | 2018-05-08 | 华南理工大学 | A kind of gas hydrate exploitation device and method based on hot pipe technique |
| CN108035699A (en) * | 2017-11-27 | 2018-05-15 | 华南理工大学 | A kind of system and method using seabed geothermal energy in-situ retorting gas hydrates |
| CN109184626A (en) * | 2018-11-05 | 2019-01-11 | 西南石油大学 | A kind of gas hydrates high efficiency recovery method |
| CN110344801A (en) * | 2018-04-03 | 2019-10-18 | 齐鲁工业大学 | Fracturing work method, recovery method and mining system for combustible ice exploitation |
| CN110805412A (en) * | 2019-10-15 | 2020-02-18 | 东北石油大学 | Dry-hot rock stratum and hydrate reservoir combined mining method |
| CN111271035A (en) * | 2020-02-13 | 2020-06-12 | 中国石油大学(华东) | Natural gas hydrate exploitation well structure |
| CN112160732A (en) * | 2020-10-24 | 2021-01-01 | 东北石油大学 | Method for mining diagenetic hydrate and gas-water separator |
| CN112392445A (en) * | 2020-11-09 | 2021-02-23 | 中国海洋石油集团有限公司 | Combined exploitation system and method for hydrate reservoir and conventional oil and gas reservoir |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262747A (en) * | 1979-02-26 | 1981-04-21 | Elliott Guy R B | In situ recovery of gaseous hydrocarbons and steam |
| CN1786416A (en) * | 2005-12-22 | 2006-06-14 | 中国石油大学(华东) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| WO2009016948A1 (en) * | 2007-07-27 | 2009-02-05 | Japan Drilling Co., Ltd. | Promotion of methane hydrate decomposition and methane gas collecting system |
-
2010
- 2010-05-11 CN CN201010175633A patent/CN101864937A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262747A (en) * | 1979-02-26 | 1981-04-21 | Elliott Guy R B | In situ recovery of gaseous hydrocarbons and steam |
| CN1786416A (en) * | 2005-12-22 | 2006-06-14 | 中国石油大学(华东) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation |
| WO2009016948A1 (en) * | 2007-07-27 | 2009-02-05 | Japan Drilling Co., Ltd. | Promotion of methane hydrate decomposition and methane gas collecting system |
Non-Patent Citations (1)
| Title |
|---|
| 宁伏龙等: "利用地热开采海底天然气水合物", 《天然气工业》, vol. 26, no. 12, 25 December 2006 (2006-12-25), pages 136 - 139 * |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322245A (en) * | 2011-05-26 | 2012-01-18 | 上海交通大学 | Gas hydrate exploitation device |
| CN102322245B (en) * | 2011-05-26 | 2013-11-06 | 上海交通大学 | Gas hydrate exploitation device |
| CN102322250A (en) * | 2011-08-18 | 2012-01-18 | 中国石油天然气股份有限公司 | Gas injection auxiliary electric heating oil shale in-situ mining simulation device and system |
| US9016378B2 (en) | 2012-02-15 | 2015-04-28 | Sichuan Honghua Petroleum Equipment Co. Ltd. | Shale gas operation method |
| WO2013120260A1 (en) * | 2012-02-15 | 2013-08-22 | 四川宏华石油设备有限公司 | Shale gas production method |
| CN102704902A (en) * | 2012-05-30 | 2012-10-03 | 中国石油大学(华东) | Natural gas hydrate exploiting method |
| CN102704902B (en) * | 2012-05-30 | 2013-04-10 | 中国石油大学(华东) | Natural gas hydrate exploiting method |
| CN103046930A (en) * | 2013-01-15 | 2013-04-17 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103046930B (en) * | 2013-01-15 | 2015-05-13 | 中国科学院力学研究所 | Suction type hydrate mining device and method |
| CN103206199B (en) * | 2013-04-15 | 2014-07-23 | 中国石油大学(华东) | Device and method for exploiting natural gas hydrates by means of thermal fluid fracturing |
| CN103206199A (en) * | 2013-04-15 | 2013-07-17 | 中国石油大学(华东) | Device and method for exploiting natural gas hydrates by means of thermal fluid fracturing |
| CN104806205A (en) * | 2015-05-12 | 2015-07-29 | 吉林大学 | Method for exploiting terrestrial natural gas hydrate |
| CN105003237A (en) * | 2015-06-11 | 2015-10-28 | 中国石油大学(华东) | Apparatus and method for integrated processing of natural gas hydrate exploitation by geothermy and waste CO2 reinjection |
| CN105275436A (en) * | 2015-11-10 | 2016-01-27 | 青岛海洋地质研究所 | Natural gas acquiring device and method |
| CN106884628A (en) * | 2017-03-29 | 2017-06-23 | 中国石油大学(华东) | Joint underground heat and CO2Replacement exploitation Gas Hydrate In Sea Areas method and system |
| US10401056B2 (en) | 2017-03-30 | 2019-09-03 | China University Of Petroleum-Beijing | Hydrothermal geothermal development method of multilateral well closed circulation |
| CN106948795A (en) * | 2017-03-30 | 2017-07-14 | 中国石油大学(北京) | A kind of method that multi-branched horizontal well closed cycle develops hot water type underground heat |
| CN107143313A (en) * | 2017-07-14 | 2017-09-08 | 中国石油大学(华东) | A kind of water filling exploitation of geothermal energy and hydrate are hidden simultaneously well construction design and method |
| CN107178344A (en) * | 2017-07-14 | 2017-09-19 | 中国石油大学(华东) | One kind injection CO2The method for employing geothermal energy development gas hydrates |
| CN107143313B (en) * | 2017-07-14 | 2018-11-16 | 中国石油大学(华东) | A kind of water filling exploitation of geothermal energy and hydrate are hidden simultaneously well construction design and method |
| CN107269254A (en) * | 2017-07-14 | 2017-10-20 | 中国石油大学(华东) | A kind of well group structures and methods using ground die mould geothermal energy extracting hydrate on bottom of sea |
| CN108005626A (en) * | 2017-11-27 | 2018-05-08 | 华南理工大学 | A kind of gas hydrate exploitation device and method based on hot pipe technique |
| CN108035699A (en) * | 2017-11-27 | 2018-05-15 | 华南理工大学 | A kind of system and method using seabed geothermal energy in-situ retorting gas hydrates |
| CN110344801A (en) * | 2018-04-03 | 2019-10-18 | 齐鲁工业大学 | Fracturing work method, recovery method and mining system for combustible ice exploitation |
| CN109184626A (en) * | 2018-11-05 | 2019-01-11 | 西南石油大学 | A kind of gas hydrates high efficiency recovery method |
| CN110805412A (en) * | 2019-10-15 | 2020-02-18 | 东北石油大学 | Dry-hot rock stratum and hydrate reservoir combined mining method |
| CN111271035A (en) * | 2020-02-13 | 2020-06-12 | 中国石油大学(华东) | Natural gas hydrate exploitation well structure |
| CN111271035B (en) * | 2020-02-13 | 2021-10-26 | 中国石油大学(华东) | Natural gas hydrate exploitation well structure |
| US11401785B2 (en) | 2020-02-13 | 2022-08-02 | China University Of Petroleum (East China) | Well structure for natural gas hydrate production |
| CN112160732A (en) * | 2020-10-24 | 2021-01-01 | 东北石油大学 | Method for mining diagenetic hydrate and gas-water separator |
| CN112392445A (en) * | 2020-11-09 | 2021-02-23 | 中国海洋石油集团有限公司 | Combined exploitation system and method for hydrate reservoir and conventional oil and gas reservoir |
| CN112392445B (en) * | 2020-11-09 | 2022-05-17 | 中国海洋石油集团有限公司 | Combined exploitation system and method for hydrate reservoir and conventional oil and gas reservoir |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101864937A (en) | Process for exploiting ocean gas hydrate by utilizing terrestrial heat | |
| CN109488259B (en) | It is handled up the method for replacement exploitation I class hydrate system based on warm seawater-gravel | |
| CN105003237B (en) | Geothermal exploitation of natural gas hydrates and CO2Integrated device and method for exhaust gas reinjection treatment | |
| CN103498648B (en) | The method and apparatus of a kind of associating step-down and hydraulic fracturing technology production of water compound | |
| CN107100605B (en) | Method for developing dry hot rock by using double horizontal wells and circulating supercritical carbon dioxide | |
| CN100455769C (en) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation | |
| CN106703780A (en) | Slant well marine gas hydrate extracting method | |
| CN103206199B (en) | Device and method for exploiting natural gas hydrates by means of thermal fluid fracturing | |
| US10267129B1 (en) | Homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and method thereof | |
| JP2019513211A (en) | Ground heat recovery from high temperature low permeability formations for power generation using a closed loop system | |
| CN1944949A (en) | Method for recovering sea bottom hydrate by single well heat injection circulation | |
| CN103216219A (en) | Method for extracting natural gas hydrate through CO2/N2 underground replacement | |
| CN105422055B (en) | A kind of system of co-development natural gas, Water Soluble Gas and gas hydrates | |
| CN106194122A (en) | The method that a kind of oil field abandoned well transform geothermal well or sub-salt well as | |
| CN102493795A (en) | Method for gasification fracturing of liquid nitrogen in hydrocarbon reservoirs | |
| CN103983035A (en) | Double-well re-injection geothermal exploitation system based on fracturing technology | |
| CN104806205A (en) | Method for exploiting terrestrial natural gas hydrate | |
| CN108930529B (en) | Oil-heat-electricity co-production method based on waste oil and gas wells | |
| Song et al. | Review of high-temperature geothermal drilling and exploitation technologies | |
| CN107269254A (en) | A kind of well group structures and methods using ground die mould geothermal energy extracting hydrate on bottom of sea | |
| CN103470223B (en) | The method and system that a kind of fossil energy low-carbon (LC) is adopted altogether | |
| CN1587641A (en) | Method and device for sea natural gas hydrate production | |
| Shen et al. | Numerical investigation of fracturing fluid invasion into hydrate reservoirs during hydraulic-fracturing stimulation | |
| CN112066445A (en) | Heating system for exploiting terrestrial heat by combining waste oil well with heat pump | |
| CN109458159B (en) | System and method for exploiting sea hydrate by thermoelectric power generation thermal shock method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101020 |