CN101725336A - Method for oil extraction by means of air injection and low-temperature oxidation and experiment device - Google Patents
Method for oil extraction by means of air injection and low-temperature oxidation and experiment device Download PDFInfo
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Abstract
The invention relates to a method for oil extraction by means of air injection and low-temperature oxidation and an experiment device. The technical scheme comprises the steps of: firstly pressuring air to be more than 17MPa with a pressurizer, pushing thick oil into a core or a sand-packed model in a middle container, adjusting a valve, and taking air as injection liquid, to complete the simulation of oil displacement; adjusting the temperature of constant-temperature air bath to lead tap water in the middle container to reach more than 200 DEG C to be evaporated, generating water vapor, pushing the vapor into the core or the sand-packed model with the air pressure, and adjusting the valve to complete the simulation of oil displacement by means of steam drive or steam stimulation; and injecting the air into the core or the sand-packed model by the pressurizer, and keeping temperature at a certain time, so that the thick oil and the air low-temperature oxidized at low temperature, and a liquid sample adding device competes the simulation of the oil displacement by water in an offshore high oil reservoir. The invention has simple technology, low cost, enough gas source, simple structure, convenient and flexible use, and can simulate the operation of various oil displacements.
Description
Technical field
The present invention relates to method and experimental facilities that a kind of air-injected low-temperature oxidation that is used for land thickened oil steam-stimulated, steam flooding or marine viscous crude water flood recovery is recovered the oil.
Background technology
Since the sixties in 20th century heavy crude producing, the thickened oil recovery technology has had the development of advancing by leaps and bounds, up to the present, formed with steam soak, steam flooding etc. and be the heavy crude heat extraction technology of main mining type, and based on alkali drives, polymer flooding, mixed phase drive etc. heavy oil cold flow production technology.
The thermal recovery technology mainly is by different mode of heatings and heat medium viscous crude to be heated up, thereby improves its mobile performance, because mining conditions, the thermal recovery technology is mainly used in the exploitation of land viscous crude, seldom is used for marine viscous crude.Heavy oil cold flow production is relative thermal recovery, promptly in the heavy crude reservoir development process, not to reduce oil viscosity by heating mode, improve the flowability of oil product, but do not relate to the method for intensification by other, as add suitable chemical agent, and utilize the characteristic of oil reservoir, take suitable technology to reach viscosity reduction exploitation purpose.Above-mentioned two kinds of exploitation method recovery ratios are lower, and investment is high.
Gas injection improves recovery efficiency technique, because cost is low, the source of the gas wide material sources have become the emphasis and the focus of the research of the present raising rate of oil and gas recovery, and are used widely at oil gas field.Improve in numerous forms of recovery efficiency technique in gas injection, carbon dioxide air source relatively lacks, and nitrogen flooding is not easy to reach mixed phase very much, Gas Prices is more expensive, select hydro carbons gas drive economy also not high, and the air wide material sources, all tool has great advantage on source and cost.And air drives and is not simple gas drive, improves recovery ratio with other gas injection and compares, and has unique fuel factor, more helps the residual oil that displacement tradition injected media can't involve.Air injection improves the thick oil recovery ratio technology because of its unique technique economic advantages, and being proved to be is a feasible raising recovery efficiency technique, so its application potential is very huge.Desk research air injection technology is used for the lightweight oil reservoir more at present, and based on air oil drive, method and test apparatus thereof that research is used for the auxiliary land thickened oil steam-stimulated or marine viscous crude water flood recovery of air injection of heavy crude reservoir are necessary.
Summary of the invention
The objective of the invention is: to improve thick oil recovery ratio is target, at land thickened oil steam-stimulated, steam flooding or marine viscous crude water flood recovery, explore air injection low temperature (for combustion in situ, temperature＜300 ℃) feasibility of catalytic oxidation oil production technology specially proposes method and the experimental facilities that a kind of air-injected low-temperature oxidation is recovered the oil.
To achieve these goals, the present invention is by the following technical solutions: the method that a kind of air-injected low-temperature oxidation is recovered the oil, it is characterized in that: at land viscous crude, earlier air is boosted to 15MPa～17MPa with booster, utilize air pressure in intermediate receptacle, to promote viscous crude and enter rock core or sandpack column, by control valve, as injecting fluid, finish the imitation oil displacement experiment operation with air; Regulate the Tempeerature-constant air bath temperature again, making the interior tap water temperature of intermediate receptacle reach 250 ℃ of pressure is that the 17MPa vaporization produces water vapour, promote steam with air pressure and enter rock core or sandpack column, the control valve ON/OFF is finished the operation of steam soak or steam flooding imitation oil displacement experiment; At marine viscous crude, the pressure-air that booster is boosted is injected in rock core or the sandpack column, insulation rock core or sandpack column 120 hours, make viscous crude and air generation low temperature (＜300 ℃) oxidation, adopt water as injecting fluid then, promote with the liquid sample injector, can finish the water drive oil operation of the marine heavy crude reservoir of simulation.
The experimental facilities that the method that air-injected low-temperature oxidation is recovered the oil is used, mainly form by rock core or sandpack column, constant temperature air bath, intermediate receptacle, booster, liquid sample injector, gs-oil separator and tail gas receiver, its architectural feature is: rock core or sandpack column 1 usefulness pipeline connect valve 19,14 and are connected, connect valve 19,15 with booster 4 and be connected with intermediate receptacle 8, connect valve 19,16 and are connected with liquid sample injector 11; Another termination valve 13 of intermediate receptacle 8 links to each other with booster 4, source of the gas 5 connects valve 12 and is connected with booster 4, the left end of valve 19 and valve 14 are provided with inlet pressure table 9,12 with the connecting line of valve 12, promote viscous crude or water vapour injection process to realize gas; Rock core or sandpack column 1 usefulness connecting line one termination valve 19,18, another termination valve 17 links to each other with gs-oil separator 6 simultaneously, be provided with delivery gauge 10 at valve 17 left ends, the side of gs-oil separator 6 connects tail gas receiver 7 with pipeline, by regulating the switch of the valve that links to each other, can realize that steam or gas, liquid drive operation, can realize the steam soak oil displacement process again.
At the valve 19 of rock core or the connection of sandpack column 1 left end, valve 17, gs-oil separator 6 and tail gas receiver 7 that right-hand member connects constitute airtight constant temperature air bath 2; Intermediate receptacle 8 tops connect valve 13, connect valve 14, valve 15 again, be connected to intermediate receptacle 8 bottoms at last, constitute airtight constant temperature air bath 3.
Method and device that air-injected low-temperature oxidation of the present invention is recovered the oil, compared with prior art, have following beneficial effect: (1) apparatus structure is simple, convenient, flexible, can simulate and realize multiple displacement of reservoir oil operation, comprise that gas drive, steam injection handle up/steam flooding, water drive and auxiliary water drive of air injection oxidation or steam-assisted recovery; (2) can adopt from heating intermediate receptacle, online generation high temperature and high pressure steam is finished the steam soak or displacement of reservoir oil operation; (3) displacement of reservoir oil device has core holding unit and sandpack column two sockets, can dismantle flexibly, install.
Description of drawings
Fig. 1 is the structural representation of the experimental facilities of the air-injected low-temperature oxidation oil recovery of the present invention's proposition.
Among the figure: 1. rock core or sandpack column; 2,3. constant temperature air bath; 4. booster; 5. source of the gas; 6. gs-oil separator; 7. tail gas receiver; 8. intermediate receptacle; 9,20. inlet pressure tables; 10. delivery gauge; 11. liquid sample injector; 12,13,14,15,16,17,18,19. valves.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1.
The experimental facilities that the method that a kind of air-injected low-temperature oxidation is recovered the oil is used, mainly partly form by rock core or sandpack column 1, constant temperature air bath 2,3, intermediate receptacle 8, booster 4, liquid sample injector 11, gs-oil separator 6 and tail gas receiver 7 etc., it is characterized in that: rock core or sandpack column 1 link to each other with booster 4, intermediate receptacle 8 and liquid sample injector 11 by different valves, the other end of intermediate receptacle 8 links to each other with booster 4, and the two ends of rock core or sandpack column 1 link to each other with gs-oil separator 6 again simultaneously.
The present invention is provided with valve at described rock core or sandpack column 1, constant temperature air bath 2,3, intermediate receptacle 8, booster 4, liquid sample injector 11, gs-oil separator 6 and tail gas receiver 7 coupling parts.The left end of valve 19 and valve 14 are provided with inlet pressure table 9,20 with the connecting line of valve 12, are provided with delivery gauge 10 at valve 17 left ends.
The process that a kind of air-injected low-temperature oxidation is recovered the oil, before implementing all oil displacement experiments, the opening/close of control valve 12,13,14,15 is by vacuumizing or booster 4 promotes to finish the saturated oils operation, when carrying out the viscous crude operated in saturation, intermediate receptacle 8 can heat simultaneously.If implement injection gas displacement, valve-off 13,15,16,18 is opened valve 14, and by control valve 17,19, control back pressure and pressure reduction are finished the operation of gas drive oil.When implementing the steam soak experiment, valve-off 14,16,18, water are packed in the intermediate receptacle 8, be warming up to 250 ℃, promote through booster 4, vapours is injected the saturated oils device, valve-off 19 is boiled in a covered pot over a slow fire well, temperature is suitably adjusted in air bath during this time 2, simulated field reservoir temperature situation, valve-off 14,15,16 afterwards, open valve 18,19 and investigate displacement of reservoir oil situations, the steam flooding experiment, flow process such as gas drive.Investigate air injection catalytic oxidation auxiliary steam oil displacement test,, repeat after the above-mentioned steam flooding test if steam soak or steam flooding later stage carry out, catalyzer is soluble in water, the intermediate receptacle 8 of packing into by certain catalytic amount, is carried by water and to inject the saturated oils device, close all valves, regulate air bath 2 and reach uniform temperature, carry out catalytic oxidation, adopt afterwards and inject water as the displacement fluid, open valve 16,17,19, promote to finish displacement of reservoir oil operation by liquid sample injector 11.
Claims (3)
1. the air-injected low-temperature oxidation method of recovering the oil, it is characterized in that: at land viscous crude, earlier air is boosted to 15MPa～17MPa with booster (4), in intermediate receptacle (8), promote viscous crude with air pressure and enter rock core or sandpack column (1), control valve (13,14,19) then, do to inject fluid with air, finish the imitation oil displacement experiment operation; Regulate the temperature of constant temperature air bath (2,3) again, make the interior tap water temperature of intermediate receptacle (8) reach 250 ℃ of pressure 4.0MPa vaporizations and produce water vapour, promote steam with air pressure and enter rock core or sandpack column (1), control valve (13,15,17,18,19), finish the operation of steam soak or steam flooding imitation oil displacement experiment; At marine viscous crude, the pressure-air that booster (4) is boosted is injected in rock core or the sandpack column (1), insulation rock core or sandpack column (1) 120 hour make viscous crude and air generation low-temperature oxidation, use liquid sample injector (11) to finish the water drive oil operation of the marine heavy crude reservoir of simulation then.
2. experimental facilities that the method for recovering the oil as claim 1 air-injected low-temperature oxidation is used, form by rock core or sandpack column, constant temperature air bath, intermediate receptacle, booster, liquid sample injector, gs-oil separator and tail gas receiver, it is characterized in that: rock core or sandpack column (1) connect valve (19,14) with pipeline and are connected, connect valve (19,15) with booster (4) and be connected with intermediate receptacle (8), connect valve (19,16) and are connected with liquid sample injector (11); Another termination valve (13) of intermediate receptacle (8) links to each other with booster (4), source of the gas (5) connects valve (12) and is connected with booster (4), inlet porting pressure meter (20) on the left end inlet porting pressure meter (9) of valve (19), connecting line at valve (14) and valve (12); Rock core or sandpack column (1) connecting line one termination valve (19,18), another termination valve (17), be connected with gs-oil separator (6) simultaneously, at valve (17) left end delivery gauge (10) is set, the side of gs-oil separator (6) connects tail gas receiver (7) with pipeline.
3. air-injected low-temperature oxidation oil recovery experimental facilities according to claim 2, it is characterized in that: at the valve (19) of rock core or the connection of sandpack column (1) left end, valve (17), gs-oil separator (6) and tail gas receiver (7) that right-hand member connects constitute airtight constant temperature air bath (2); Intermediate receptacle (8) top connects valve (13), connects valve (14), valve (15) again, is connected to intermediate receptacle (8) bottom at last, constitutes airtight constant temperature air bath (3).
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Cited By (16)
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| CN102095833A (en) * | 2010-12-17 | 2011-06-15 | 中国石油天然气股份有限公司 | Test method for intrastratal nonhomogeneous model |
| CN102230940A (en) * | 2011-05-24 | 2011-11-02 | 中国石油天然气股份有限公司 | Low-temperature oxidation experimental method and device of crude oil extracted by injecting air into light oil reservoir |
| CN102237005A (en) * | 2011-05-10 | 2011-11-09 | 中国石油化工股份有限公司 | Automatic back pressure control device |
| CN102353750A (en) * | 2011-06-03 | 2012-02-15 | 中国石油天然气股份有限公司 | Crude oil low-temperature oxidation experimental device for light oil reservoir air-injection oil extraction |
| CN102384970A (en) * | 2011-08-19 | 2012-03-21 | 中国石油天然气股份有限公司 | Light crude-oil circular gas-injection low-temperature oxidization experimental method and device |
| CN102852498A (en) * | 2012-09-07 | 2013-01-02 | 中国石油大学(北京) | Device and method for simulating thickened oil viscosity reduction during wellbore lifting |
| CN102979492A (en) * | 2012-11-30 | 2013-03-20 | 东北石油大学 | Experimental device for producing thin and heavy oil by solvent extraction |
| CN103061729A (en) * | 2013-01-08 | 2013-04-24 | 北京科技大学 | Anaerobic simple core flooding simulation system simulating method |
| CN103528862A (en) * | 2013-09-27 | 2014-01-22 | 中国石油天然气股份有限公司 | Method for quickly evaluating oil washing effect of oil displacement agent indoors |
| CN103603658A (en) * | 2013-11-04 | 2014-02-26 | 中国石油大学(北京) | Oil production experimental device capable of simulating reservoir pressure supply |
| CN103821487A (en) * | 2014-03-20 | 2014-05-28 | 中国石油大学(华东) | Simulation experiment set for thickened oil thermal recovery storage layer fractures |
| CN105041280A (en) * | 2015-06-03 | 2015-11-11 | 东北石油大学 | Method and device for realizing carbon dioxide miscible-phase displacement laboratory experiment |
| CN105527408A (en) * | 2016-01-07 | 2016-04-27 | 西南石油大学 | High pressure injected air oxidation heat effect detecting and tracking experimental device and method |
| CN107100599A (en) * | 2017-03-17 | 2017-08-29 | 中国石油天然气股份有限公司 | Oil production method and its well pattern arrangement |
| CN107420078A (en) * | 2017-09-06 | 2017-12-01 | 阳晓燕 | Rock stress sensitivity drives oil displacement efficiency to steam influences physical simulating method and device |
| CN111827943A (en) * | 2020-07-18 | 2020-10-27 | 中国石油天然气股份有限公司 | Rock core saturated oil method and device |
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2009
- 2009-11-20 CN CN200910216293A patent/CN101725336A/en active Pending
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| CN102095833A (en) * | 2010-12-17 | 2011-06-15 | 中国石油天然气股份有限公司 | Test method for intrastratal nonhomogeneous model |
| CN102095833B (en) * | 2010-12-17 | 2014-11-19 | 中国石油天然气股份有限公司 | Test method for intrastratal nonhomogeneous model |
| CN102237005A (en) * | 2011-05-10 | 2011-11-09 | 中国石油化工股份有限公司 | Automatic back pressure control device |
| CN102230940A (en) * | 2011-05-24 | 2011-11-02 | 中国石油天然气股份有限公司 | Low-temperature oxidation experimental method and device of crude oil extracted by injecting air into light oil reservoir |
| CN102230940B (en) * | 2011-05-24 | 2013-03-20 | 中国石油天然气股份有限公司 | Low-temperature oxidation experimental method and device of crude oil extracted by injecting air into light oil reservoir |
| CN102353750B (en) * | 2011-06-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Crude oil low-temperature oxidation experimental device for light oil reservoir air-injection oil extraction |
| CN102353750A (en) * | 2011-06-03 | 2012-02-15 | 中国石油天然气股份有限公司 | Crude oil low-temperature oxidation experimental device for light oil reservoir air-injection oil extraction |
| CN102384970A (en) * | 2011-08-19 | 2012-03-21 | 中国石油天然气股份有限公司 | Light crude-oil circular gas-injection low-temperature oxidization experimental method and device |
| CN102384970B (en) * | 2011-08-19 | 2014-07-02 | 中国石油天然气股份有限公司 | Light crude-oil circular gas-injection low-temperature oxidization experimental method and device |
| CN102852498A (en) * | 2012-09-07 | 2013-01-02 | 中国石油大学(北京) | Device and method for simulating thickened oil viscosity reduction during wellbore lifting |
| CN102852498B (en) * | 2012-09-07 | 2015-08-05 | 中国石油大学(北京) | Thick oil well bore lifting viscosity reduction analogue means and method |
| CN102979492A (en) * | 2012-11-30 | 2013-03-20 | 东北石油大学 | Experimental device for producing thin and heavy oil by solvent extraction |
| CN102979492B (en) * | 2012-11-30 | 2015-01-07 | 东北石油大学 | Experimental device for producing thin and heavy oil by solvent extraction |
| CN103061729A (en) * | 2013-01-08 | 2013-04-24 | 北京科技大学 | Anaerobic simple core flooding simulation system simulating method |
| CN103061729B (en) * | 2013-01-08 | 2015-08-26 | 北京科技大学 | A kind of anaerobism simple and easy core flooding test simulation system analogy method |
| CN103528862B (en) * | 2013-09-27 | 2016-03-09 | 中国石油天然气股份有限公司 | A kind of indoor rapid method for assessment of oil displacement agent washing oil effect |
| CN103528862A (en) * | 2013-09-27 | 2014-01-22 | 中国石油天然气股份有限公司 | Method for quickly evaluating oil washing effect of oil displacement agent indoors |
| CN103603658A (en) * | 2013-11-04 | 2014-02-26 | 中国石油大学(北京) | Oil production experimental device capable of simulating reservoir pressure supply |
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| CN103821487B (en) * | 2014-03-20 | 2015-04-15 | 中国石油大学(华东) | Simulation experiment set for thickened oil thermal recovery storage layer fractures |
| CN103821487A (en) * | 2014-03-20 | 2014-05-28 | 中国石油大学(华东) | Simulation experiment set for thickened oil thermal recovery storage layer fractures |
| CN105041280A (en) * | 2015-06-03 | 2015-11-11 | 东北石油大学 | Method and device for realizing carbon dioxide miscible-phase displacement laboratory experiment |
| CN105527408A (en) * | 2016-01-07 | 2016-04-27 | 西南石油大学 | High pressure injected air oxidation heat effect detecting and tracking experimental device and method |
| CN105527408B (en) * | 2016-01-07 | 2017-10-03 | 西南石油大学 | A kind of high pressure air injection heat of oxidation effect detection tracking test device and method |
| CN107100599A (en) * | 2017-03-17 | 2017-08-29 | 中国石油天然气股份有限公司 | Oil production method and its well pattern arrangement |
| CN107100599B (en) * | 2017-03-17 | 2019-10-11 | 中国石油天然气股份有限公司 | Oil production method and its well pattern arragement construction |
| CN107420078A (en) * | 2017-09-06 | 2017-12-01 | 阳晓燕 | Rock stress sensitivity drives oil displacement efficiency to steam influences physical simulating method and device |
| CN107420078B (en) * | 2017-09-06 | 2023-09-19 | 阳晓燕 | Physical simulation method and device for influence of rock stress sensitivity on steam flooding oil displacement efficiency |
| CN111827943A (en) * | 2020-07-18 | 2020-10-27 | 中国石油天然气股份有限公司 | Rock core saturated oil method and device |
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Application publication date: 20100609 |