CN103590795A - Method for integrating natural gas recovery efficiency increasing through CO2 waste gas reinjection with CO2 geological storage - Google Patents
Method for integrating natural gas recovery efficiency increasing through CO2 waste gas reinjection with CO2 geological storage Download PDFInfo
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- CN103590795A CN103590795A CN201310489040.2A CN201310489040A CN103590795A CN 103590795 A CN103590795 A CN 103590795A CN 201310489040 A CN201310489040 A CN 201310489040A CN 103590795 A CN103590795 A CN 103590795A
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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
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Abstract
The invention relates to a method for integrating natural gas recovery efficiency increasing through CO2 waste gas reinjection with CO2 geological storage and belongs to the technical field of natural gas resource exploitation and CO2 emission reduction. The method is characterized by including: subjecting primary natural gas recovered by a gas recovery well to purification treatments such as dewatering, desulfurization and decarbonization to produce pure natural gas and the CO2 waste gas; conveying part of the pure natural gas to a gas-steam combined generator set of a natural gas power plate near a gas field for combustion power generation whose heat efficiency can reach 57%; performing CO2 capture on the flue gas after combustion to obtain the CO2 waste gas; conveying the CO2 waste gas captured from the flue gas and the CO2 waste gas separated by purification treatment to a pressurization and thermoregulation system for pressurization and thermoregulation to reach a supercritical state; injecting the supercritical CO2 to the bottom of a natural gas reservoir through a reinjection well to displace natural gas to move towards the gas recovery well and output. The method has the advantages that natural gas output is increased, overall recovery efficiency and energy utilization rate are increased, and the CO2 is stored in the geological structure of the gas reservoir to achieve energy conservation and emission reduction.
Description
Technical field
The invention belongs to natural gas resource exploitation and CO
2emission-reduction technology field, is specifically related to a kind of re-injection CO
2waste gas improves gas recovery factor and CO
2geological storage is in the method for one.
Background technology
Natural gas resource has many merits for coal and oil, its combustion heat value is high, does not produce solid waste and waste water, and especially its burning produces less carbon dioxide, a kind of clean, eco-friendly fossil fuel, so countries in the world extensive concern construction of natural gas fields technology.Meanwhile, global warming, reduction of greenhouse gas discharge also becomes the problem that people are concerned about.
At present, natural gas extraction mode is mainly take natural exhaustion exploitation early stage as main, and rear employing drainage gas recovery or other oil/gas well stimulation measures, as pressure break, acidifying, blast etc.These technology have increased gas production, but in world wide, the recovery ratio of natural gas is in 75% left and right, still have 25% natural gas to fail exploitation out, and these technology exist polluted underground water, cause the danger of geological disasters such as subsiding.
Under formation condition, CO
2generally, in supercriticality, physical property is similar to liquid, and viscosity and density are much larger than CH
4, can avoid CO
2mix with natural gas large area.Note CO
2improving gas recovery factor technology, is exactly supercritical CO
2be injected into gas reservoir bottom renwing stratum pressure, due to gravitational differentiation CO
2migration downwards, impel natural gas to top migration output stably, thereby the natural gas drive that conventional mining type cannot be exploited is for out improving the recovery ratio of natural gas, the phenomenon generations such as precipitation and water enchroachment (invasion) of also can avoiding caving in.And the integrality of the gas storage of natural gas pool and trap capping, reduced CO
2the danger of revealing, can realize CO
2geological storage, reduce greenhouse gas emission, alleviate the severe trend of climate change.
At present, existing research is to noting CO
2improve gas recovery factor and carried out preliminary theory Discussion on Feasibility, and independent system process, facilities and equipment and the technical method comparative maturities such as the natural gas purification processing relating to, the trapping of flue carbon, Pressurized temperature regulating, horizontal branch well, but also there is no concrete re-injection CO
2waste gas improves gas recovery factor and CO
2the integrated technical method of geological storage, for actual production provides technical know-how and method support.
Summary of the invention
The object of the present invention is to provide a kind of re-injection CO
2waste gas improves gas recovery factor and CO
2geological storage, in the method for one, improves gas recovery factor and efficiency of energy utilization, reduces greenhouse gas emission, realizes energy-saving and emission-reduction.
Technical scheme of the present invention is: utilize near Natural Gas Power Plant gas field, the pure natural gas resource of directly gas field being produced is converted into power delivery and goes out, and energy utilization rate is high, and the CO that the trapping of burning rear pass gas is obtained
2waste gas, the CO obtaining with natural gas purification processing
2waste gas together re-injection, to gas reservoir bottom, improves gas recovery factor, increases output, obtains the most of CO of more natural gas resources geological storage
2waste gas, realizes energy-saving and emission-reduction.
First near gas field, build Natural Gas Power Plant, power plant adopts Mitsubishi heavy industry M701F novel gas-Steam Combined generating set, and the thermal efficiency reaches 57%, natural gas resource is converted into power delivery and goes out for productive life.In gas field, the native gas obtaining from gas reservoir exploitation by gas recovery well, is transported to cleaning treatment system through pipeline, dewaters, the processing such as desulfurization and decarburization, produces pure natural gas, and in decontamination process, by the waste gas simmer down to CO obtaining
2content reaches 99% CO
2waste gas.Then, by pipeline by the pure natural gas transport of part near Natural Gas Power Plant combustion power generation gas field, the pure natural gas transport of another part is to city gas pipeline net; Being transported to the pure natural gas of Natural Gas power plant, by gas-steam combined generating set, in gas-turbine combustion chamber internal combustion, and is that power delivery is gone out through gas turbine and Waste-heat boiler by Conversion of Energy successively.Flue gas after burning is carried out collecting carbonic anhydride, obtains CO
2content reaches 99% CO
2waste gas.Then, the CO separating with purified treatment flue trapping being obtained
2waste gas is delivered to Pressurized temperature regulating system, in this system, and CO
2the pressurized temperature adjustment of waste gas reaches supercriticality, now supercritical CO
2waste gas physical property is similar to liquid.Finally by pipeline by supercritical CO
2waste gas is transported to CO
2reinjection well, is recycled into natural gas pool bottom, and displacement natural gas is to gas recovery well migration output.Wherein, reinjection well is in gas reservoir bottom with horizontal branch well structure distribution, and this structure well casing net has improved re-injection efficiency, accelerates displacement natural gas and migrates to gas recovery well.
Described method, CO in the natural gas of single gas recovery well output
2content raises suddenly, and during without economic benefit, closes this gas recovery well, stops aerogenesis, and is transformed, as next re-injection CO
2waste gas improves the CO of gas recovery factor and CO2 geological storage integrated unit
2reinjection well.
Effect of the present invention and benefit be, builds power plant near gas field, shortened air delivering pipeline, and the gas-steam combined generating set heat efficiency of Natural Gas Power Plant is up to 57%, and resource utilization is high, saves the energy; The CO producing
2waste gas is recycled into natural gas pool bottom, has not only realized raising gas recovery factor but also has reached and sealed part CO up for safekeeping
2object, be a kind of good energy-saving and emission-reduction measure.And re-injection natural gas purification processing obtain containing CO
2the CO that near Natural Gas Power Plant flue carbon trapping waste gas or gas field obtains
2waste gas, the CO obtaining compared to other capture methods
2cost is low, and pipeline facilities is complete, is convenient to engineering construction.
Accompanying drawing explanation
Accompanying drawing is re-injection CO
2waste gas improves gas recovery factor and CO
2geological storage integral method schematic flow sheet.
In figure: 1 Gas Exploitation gas well; 2 cleaning treatment systems; 3 power plant's gas-steam combined generating sets; 4CO
2trapping system; 5 Pressurized temperature regulating systems; 6CO
2reinjection well; 7 Gas Exploitation gas well cylinders; 8CO
2re-injection pit shaft; 9 pipeline network of fuel gas in city; 10 air delivering pipelines.
the specific embodiment
Below in conjunction with technical scheme and accompanying drawing, describe the specific embodiment of the present invention in detail.
As shown in Figure of description, the trapezoidal derrick in left side is Gas Exploitation gas well 1, and the trapezoidal derrick in right side is CO
2reinjection well 6.Gas Exploitation gas well 1 gas production from natural gas pool reservoir, by the native gas of output, be transported to natural gas purification processing system 2 through air delivering pipeline, in cleaning treatment system 2, dewater, the purified treatment such as desulfurization and decarburization, produce pure natural gas, and by waste gas simmer down to CO
2content reaches 99% CO
2waste gas, is directly delivered to Pressurized temperature regulating system 5 through air delivering pipeline.The pure natural gas via air delivering pipeline of part is delivered to pipeline network of fuel gas in city 9, most of pure natural gas is delivered near the Natural Gas Power Plant gas-steam combined generating set 3 gas field by gas pipeline, combustion power generation, the flue gas after burning is sent to CO through air delivering pipeline
2trapping system 4, trapping obtains CO
2content reaches 99% CO
2waste gas.The CO that trapping obtains
2waste gas is delivered to Pressurized temperature regulating system 5 through air delivering pipeline, under Pressurized temperature regulating systemic effect, and the CO obtaining with purified treatment that trapping obtains
2the pressurized temperature adjustment of waste gas reaches supercriticality.By air delivering pipeline by supercritical CO
2waste gas is transported to CO from Pressurized temperature regulating system 5
2reinjection well 6, through CO
2re-injection pit shaft 8 is injected into the bottom of natural gas pool, renwing stratum pressure, and displacement natural gas is to gas production pit shaft 7 migration stable outputs.
Claims (3)
1. re-injection CO
2waste gas improves gas recovery factor and CO
2the integrated method of geological storage, is characterized in that: native gas, through purified treatment such as dehydration, desulfurization and decarburizations, is produced pure natural gas, and obtained CO
2waste gas; Near gas field, build Natural Gas Power Plant, adopt gas-steam combined generating set, the pure natural gas transport of part is to Natural Gas Power Plant combustion power generation, and the flue gas after burning is carried out collecting carbonic anhydride, obtains CO
2waste gas, the pure natural gas transport of another part is to city gas pipeline net; The CO separating with purified treatment that flue trapping is obtained
2waste gas is delivered to Pressurized temperature regulating system, in this system, and CO
2the pressurized temperature adjustment of waste gas reaches supercriticality; Supercritical CO
2waste gas is transported to CO
2reinjection well, is injected into natural gas pool bottom, and displacement natural gas is to gas recovery well migration output.
2. re-injection CO according to claim 1
2waste gas improves gas recovery factor and CO
2the integrated method of geological storage, is characterized in that: CO in the natural gas of single gas recovery well output
2content raises suddenly, and during without economic benefit, closes this gas recovery well, stops aerogenesis, and is transform as next re-injection CO
2waste gas improves gas recovery factor and CO
2the CO of geological storage integrated unit
2reinjection well.
3. re-injection CO according to claim 1
2waste gas improves gas recovery factor and CO
2the integrated method of geological storage, is characterized in that: reinjection well in gas reservoir bottom with horizontal branch well structure distribution.
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Cited By (16)
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|---|---|---|---|---|
| CN104481472A (en) * | 2014-10-31 | 2015-04-01 | 中国石油化工股份有限公司 | CO2 flooding output gas separation and reinjection integrated method |
| CN104533368A (en) * | 2014-12-22 | 2015-04-22 | 中国石油天然气股份有限公司 | Application of in-situ combustion flue gas to oil deposit exploitation and system |
| CN105114045A (en) * | 2015-08-05 | 2015-12-02 | 中国石油大学(华东) | CCUS system for extracting oil based on gas lifting method and application thereof |
| WO2017088346A1 (en) * | 2015-11-26 | 2017-06-01 | 彭斯干 | Production method and equipment for marine oil gas energy sources without carbon emission |
| CN106803597A (en) * | 2015-11-26 | 2017-06-06 | 彭斯干 | Zero carbon emission fossil fuel power method and device system |
| CN106823674A (en) * | 2017-01-09 | 2017-06-13 | 神华集团有限责任公司 | Gas processing method and device |
| WO2017107240A1 (en) * | 2015-12-22 | 2017-06-29 | 彭斯干 | Carbon-emission-free consolidated oil and gas power generating method and equipment |
| WO2017143652A1 (en) * | 2016-02-23 | 2017-08-31 | 彭斯干 | Electricity generation method and device using combustion of fossil fuels and having zero-carbon emission |
| CN107355680A (en) * | 2017-07-19 | 2017-11-17 | 陕西延长石油(集团)有限责任公司研究院 | A kind of CO2Trapping, conveying, using with sealing full-flow process up for safekeeping |
| WO2019071526A1 (en) * | 2017-10-12 | 2019-04-18 | 彭斯干 | Zero-carbon emission fossil fuel power generation method and apparatus system |
| CN110043235A (en) * | 2019-05-23 | 2019-07-23 | 西南石油大学 | A kind of thick oil filling vaporization method burnt using underground supercritical water |
| CN110541690A (en) * | 2019-09-04 | 2019-12-06 | 中海石油气电集团有限责任公司 | method for improving recovery ratio by decarbonization of natural gas at gas field wellhead and CO2 reinjection |
| CN111268679A (en) * | 2020-02-25 | 2020-06-12 | 河南理工大学 | Unconventional natural gas extraction and CO2Sealing and storing integrated device and application method |
| CN112499586A (en) * | 2020-12-02 | 2021-03-16 | 西南石油大学 | Method for realizing steam reforming hydrogen production by heating water-invaded gas reservoir stratum |
| CN115898345A (en) * | 2021-08-06 | 2023-04-04 | 中国石油天然气股份有限公司 | Carbon dioxide-containing gas reservoir development system |
| CN116122782A (en) * | 2022-12-22 | 2023-05-16 | 新疆敦华绿碳技术股份有限公司 | CO (carbon monoxide) 2 Cold collection and auxiliary steam huff and puff equipment |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481472A (en) * | 2014-10-31 | 2015-04-01 | 中国石油化工股份有限公司 | CO2 flooding output gas separation and reinjection integrated method |
| CN104533368A (en) * | 2014-12-22 | 2015-04-22 | 中国石油天然气股份有限公司 | Application of in-situ combustion flue gas to oil deposit exploitation and system |
| CN104533368B (en) * | 2014-12-22 | 2017-09-01 | 中国石油天然气股份有限公司 | Application and system of a kind of combustion in situ flue gas in oil reservoir exploitation |
| CN105114045A (en) * | 2015-08-05 | 2015-12-02 | 中国石油大学(华东) | CCUS system for extracting oil based on gas lifting method and application thereof |
| CN105114045B (en) * | 2015-08-05 | 2018-04-27 | 中国石油大学(华东) | A kind of CCUS systems recovered the oil based on gas lift method and application |
| WO2017088346A1 (en) * | 2015-11-26 | 2017-06-01 | 彭斯干 | Production method and equipment for marine oil gas energy sources without carbon emission |
| CN106803597A (en) * | 2015-11-26 | 2017-06-06 | 彭斯干 | Zero carbon emission fossil fuel power method and device system |
| WO2017107240A1 (en) * | 2015-12-22 | 2017-06-29 | 彭斯干 | Carbon-emission-free consolidated oil and gas power generating method and equipment |
| GB2563765A (en) * | 2016-02-23 | 2018-12-26 | Peng Sigan | Electricity generation method and device using combustion of fossil fuels and having zero-carbon emission |
| WO2017143652A1 (en) * | 2016-02-23 | 2017-08-31 | 彭斯干 | Electricity generation method and device using combustion of fossil fuels and having zero-carbon emission |
| GB2563765B (en) * | 2016-02-23 | 2021-05-26 | Peng Sigan | Process and equipment of fossil fuel power generation with zero carbon emission |
| CN106823674A (en) * | 2017-01-09 | 2017-06-13 | 神华集团有限责任公司 | Gas processing method and device |
| CN107355680B (en) * | 2017-07-19 | 2019-06-04 | 陕西延长石油(集团)有限责任公司研究院 | A kind of CO2Trapping, conveying, using with seal full-flow process up for safekeeping |
| CN107355680A (en) * | 2017-07-19 | 2017-11-17 | 陕西延长石油(集团)有限责任公司研究院 | A kind of CO2Trapping, conveying, using with sealing full-flow process up for safekeeping |
| WO2019071526A1 (en) * | 2017-10-12 | 2019-04-18 | 彭斯干 | Zero-carbon emission fossil fuel power generation method and apparatus system |
| CN110043235A (en) * | 2019-05-23 | 2019-07-23 | 西南石油大学 | A kind of thick oil filling vaporization method burnt using underground supercritical water |
| CN110541690A (en) * | 2019-09-04 | 2019-12-06 | 中海石油气电集团有限责任公司 | method for improving recovery ratio by decarbonization of natural gas at gas field wellhead and CO2 reinjection |
| CN111268679A (en) * | 2020-02-25 | 2020-06-12 | 河南理工大学 | Unconventional natural gas extraction and CO2Sealing and storing integrated device and application method |
| CN111268679B (en) * | 2020-02-25 | 2024-05-03 | 河南理工大学 | Unconventional natural gas production and CO2Integrated sealing and storing device and application method |
| CN112499586A (en) * | 2020-12-02 | 2021-03-16 | 西南石油大学 | Method for realizing steam reforming hydrogen production by heating water-invaded gas reservoir stratum |
| CN112499586B (en) * | 2020-12-02 | 2021-11-23 | 西南石油大学 | Method for realizing steam reforming hydrogen production by heating water-invaded gas reservoir stratum |
| CN115898345A (en) * | 2021-08-06 | 2023-04-04 | 中国石油天然气股份有限公司 | Carbon dioxide-containing gas reservoir development system |
| CN116122782A (en) * | 2022-12-22 | 2023-05-16 | 新疆敦华绿碳技术股份有限公司 | CO (carbon monoxide) 2 Cold collection and auxiliary steam huff and puff equipment |
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Application publication date: 20140219 |