CN102071933B - Method and device for sampling produced fluid of oil reservoir for microbial flooding - Google Patents
Method and device for sampling produced fluid of oil reservoir for microbial flooding Download PDFInfo
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- CN102071933B CN102071933B CN 201010552732 CN201010552732A CN102071933B CN 102071933 B CN102071933 B CN 102071933B CN 201010552732 CN201010552732 CN 201010552732 CN 201010552732 A CN201010552732 A CN 201010552732A CN 102071933 B CN102071933 B CN 102071933B
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Abstract
The invention relates to a method and a device for sampling a produced fluid of an oil reservoir for microbial flooding. The technical scheme comprises the following steps of: (1) test and control of the temperature and pressure of the oil reservoir; (2) anaerobic treatment for the sampling device; (3) high-temperature and high-pressure separation of oil, gas and water; (4) anaerobic and high-pressure sampling of the oil, the gas and the water; (5) on-line test of oil, gas and water samples; and (6) processing and remote transmission of oil, gas and water test results. The invention has the advantages of solving the problem of the sampling of oil, gas and water mixtures under high-temperature, high-voltage and anaerobic conditions, ensuring that materials cannot diffuse on the spot during the sampling so as to protect on-site environment, ensuring that recovered crude oil and gas can be effectively utilized, ensuring the accuracy and reliability of parameter testing of the produced fluid of the oil reservoir of the microbial flooding, improving the accuracy of microbial community structures by over 30 percent and the accuracy of oxidation-reduction potential by over 40 percent, and providing a reliable theoretical basis for the ecological regulation and control of the oil reservoir of the microbial blooding.
Description
Technical field
The present invention relates to a kind of Microbial Enhanced Oil Recovery field, particularly a kind of oil reservoir production fluid sampling method and device of driving for microorganism keeping under high temperature, high pressure and anaerobic condition.
Background technology
Microorganism is improved recovery efficiency technique (Microbial Enhanced Oil Recovery) and refers to the technology of utilizing microorganism (being mainly bacterium, ancient bacterium) and metabolite thereof to improve crude output and recovery ratio, with other tertiary oil recovery technologies, compare, that microbial technique has is applied widely, technique is simple, the characteristics such as good in economic efficiency, pollution-free, have a good application prospect, thereby receive increasing concern.Microbial single well wax control, microorganism huff and puff and microbial oil displacement three major types technology have been formed at present.
The test event that at present microorganism drives production fluid in process mainly comprises biological community structure, oxidation-reduction potential, salinity and the pH value etc. of viscosity of crude and family's component, gas composition and component, formation water.Crude oil, formation water and gaseous sample are to get produced liquid in oil well process indoor oil, gas, moisture from obtaining by scene.In at present traditional sampling process, the pressure of sample can be down to atmospheric pressure by sudden outburst, also without Insulation, and be exposed to the original anaerobic environment of destruction in air, so the method Shortcomings is:
(1) temperature, pressure and oxygen content are the key factors that affects the growth of microorganism metabolism, their fluctuation can cause structure of community in formation water to change, and makes its biological community structure test result reflect the situation in high-temperature and high-pressure conditions sub-surface water by objective;
(2) mensuration of oxidation-reduction potential is mainly first the crude oil in water and suspension to be filtered out, and then utilizes platinum electrode for measurement electrode, and the silver-silver chloride electrode of usining is directly measured as auxiliary electrode.The method will cause airborne oxygen to dissolve in recovered water, improves dissolved oxygen, makes the higher of institute's oxygen determination reduction potential value;
(3) just can carry out parameter testing after pretreatment the oil mixing with water of getting from scene need to carry out water-oil separating and test to laboratory, therefore not only length consuming time causes test result inaccurate, and how intermediate link easily causes the pollution of sample;
(4), in the field sampling process, gas and part production fluid directly efflux, and cause environment pollution.
Through patent and document Investigation retrieval, oilfield produced fluid high temperature, high-pressure sampling method also do not occur and install relevant patent and document, patent ZL91109848(" suspension sampling method and device ") introduce a kind of method of extracting sample in solid particle suspension that has, partial suspended liquid is extracted and deliver to its composition of analysis an analyzer from the bypass of suspension pond.The problem of its existence is: this device carries out the sampling of suspension, the requirement that does not reach high temperature, high pressure, enclosed sampling under normal temperature, normal pressure, open condition.Patent 200910142194.8(" oil phase sampling method and special equipment thereof in oil-water two-phase ") introduced a kind of polypropylene fibre of using as eliminator, method with peristaltic pump continuous drawing oil phase, the problem of its existence is that this device can only carry out profit two under normal temperature, condition of normal pressure and is separated, do not reach the requirement of high pressure and enclosed sampling, discarded object effluxes contaminated environment simultaneously.
Summary of the invention
Purpose of the present invention is exactly in view of the foregoing defects the prior art has; a kind of oil reservoir production fluid sampling method and device driven for microorganism is provided; solved the difficult problem of oil gas aqueous mixtures sampling under the HTHP anaerobic condition; in sampling process, material can not spread at the scene; thereby protected site environment, crude oil and gas reclaim and can be utilized effectively.
A kind of oil reservoir production fluid sampling method driven for microorganism, its technical scheme is to comprise the following steps:
(1) reservoir temperature pressure test and control
At first detect by pressure-detecting device the reservoir pressure that microorganism drives, temperature-detecting device detects the reservoir temperature that microorganism drives, then feed back to respectively the temperature and pressure control device, pressure control device is controlled the pressure of production fluid sampler, and temperature control equipment is controlled the temperature of production fluid sampler.
(2) sampler Anaerobic Treatment
Utilize vacuum pump that air residual in well head linkage unit, oil gas water collector unit, profit one-level separative element, profit the second-order separation unit, recovered water collector unit is extracted out, guarantee that whole device is in oxygen-free environment.
(3) oil gas water high pressure-temperature separates
Open the cross valve of well head linkage unit, produced liquid in oil well passes through profit one-level separative element successively, and profit the second-order separation unit is got and obtained crude oil, waste liquid and high temperature and high pressure gas and recovered water.
(4) oil gas water anaerobism and high-pressure sampling
Utilize high-pressure sampling device and anaerobism sampler to sample from the recovered water collector unit and carry out HTHP sampling and anaerobism sampling, utilize crude oil sampling apparatus to draw oil sample from the crude oil gathering-device, utilize gas sampling device to get the gas sample from gas collector.
(5) oil gas water sample on-line testing
After the oil gas water sample takes into, carry out online oxidation-reduction potential, biological community structure, salinity, the pH value of recovered water, viscosity of crude, family's component, gas composition and component test.
(6) oil gas water test result is processed and teletransmission
After on-line testing completes, carry out test result and compile, then carry out teletransmission, laboratory obtains the result of on-line testing.
(7) sampler cleans
After above-mentioned steps has sampled, utilize the elevated pressure nitrogen in sampler to be cleaned residual fraction crude oil or recovered water in sampler, the standby HTHP that carries out the end opening well samples, and prevents from polluting the sample of end opening well.
(8) waste liquid is recycled
Sampled rear remaining recovered water, crude oil and gas and sent laboratory back to and recycled, the waste liquid after cleaning effluxes after harmless treatment.
In addition, a kind of oil reservoir production fluid sampler driven for microorganism of the present invention, comprise well head linkage unit, oil gas water collector unit, profit one-level separative element, profit the second-order separation unit, recovered water collector unit, high-pressure sampling device, reservoir temperature and pressure-detecting device, temperature and pressure control device, multi-parameters test unit, anaerobic processing device, data processing and remote transmission device, waste-liquid cleaning device, gas collector, crude oil gathering-device, anaerobism sampler and waste collecting device; Described well head linkage unit connects respectively waste-liquid cleaning device, reservoir temperature and pressure-detecting device, well mouth of oil well and oil gas water collector unit, described oil gas water collector unit connects profit one-level separative element, profit the second-order separation unit, recovered water collector unit high-pressure sampling device successively, and described oil gas water collector unit connects gas collector by high-pressure stop valve; Described profit one-level separative element and profit the second-order separation unit are communicated with the crude oil gathering-device by high-pressure stop valve respectively; Described recovered water collector unit is communicated with anaerobism sampler and waste collecting device by high-pressure stop valve, and the bottom of recovered water collector unit is communicated with anaerobic processing device.Described crude oil sampling apparatus connects the crude oil gathering-device by high-pressure stop valve, and gas sampling device connects gas collector by high-pressure stop valve.
The output connection data of above-mentioned multi-parameters test unit is processed and remote transmission device, and input connects gas collector, high-pressure sampling device and anaerobic processing device.
The present invention compared with prior art, has following advantage:
(1) this sampler has the function of high temperature, high pressure and anaerobism, and the temperature and pressure control accuracy is high, and the temperature departure is ± 0.1 ℃, and the pressure departure is ± 0.1MPa.Guaranteed microbial oil displacement Tibetan production fluid parameter testing accuracy and reliability, the biological community structure accuracy improves more than 30%, and the oxidation-reduction potential accuracy improves more than 40%, hides ecological regulation and control for microbial oil displacement reliable theoretical foundation is provided;
(2) this device has the function of on-line testing and data remote, with conventional method, compares, and obtains required time and shortened 3～5 days from the field sampling to the test result, has improved operating efficiency on the one hand, improves on the other hand the accuracy of test result;
(3) this apparatus function is many, and the function of existing high temperature, high pressure, anaerobism and enclosed sampling also has the function of parameter on-line testing and test result teletransmission, and this equipment safety performance is high simultaneously, and automaticity is high, and pressure and temperature is realized automatically controlling;
(4) this device have reasonable in design, workable, simple in structure, flexible, mobility is strong;
(5) this device oil gas water in sampling process can not spread at the scene; crude oil after having sampled, gas and waste liquid are sorted out respectively recovery, and the crude oil reclaimed on the one hand can be utilized effectively, and has realized on the other hand zero-emission; protect site environment, alleviated the injury to operation.
The accompanying drawing explanation
Accompanying drawing 1 is structured flowchart of the present invention;
Accompanying drawing 2 is structural representation block diagrams of oil gas water collector unit of the present invention;
Accompanying drawing 3 is structured flowcharts of profit one-level separative element of the present invention;
Accompanying drawing 4 is structured flowcharts of profit the second-order separation of the present invention unit;
Accompanying drawing 5 is structured flowcharts of recovered water collector unit of the present invention;
Accompanying drawing 6 is structured flowcharts of multi-parameters test of the present invention unit;
In upper figure: well head linkage unit 1, oil gas water collector unit 2, profit one-level separative element 3, profit the second-order separation unit 4, recovered water collector unit 5, high-pressure sampling device 6, reservoir temperature and pressure-detecting device 7, temperature and pressure control device 8, multi-parameters test unit 9, anaerobic processing device 10, data are processed and remote transmission device 11, waste-liquid cleaning device 12, gas collector 13, crude oil gathering-device 14, anaerobism sampler 15, waste collecting device 16, crude oil sampling apparatus 17 and gas sampling device 18,
Oil gas water collecting device 21, high-pressure stop valve 22, high-pressure stop valve 23, high-pressure stop valve 24, safety valve 25 and pressure sensor 26; Profit one-level separator 31, high-pressure stop valve 32, high-pressure stop valve 33, high-pressure stop valve 34, safety valve 35 and pressure sensor 36; Profit secondary separation device 41, high-pressure stop valve 42, high-pressure stop valve 43, high-pressure stop valve 44, safety valve 45 and pressure sensor 46; Gather water collecting device 51, high-pressure stop valve 52, high-pressure stop valve 53, high-pressure stop valve 54, high-pressure stop valve 55, safety valve 56 and pressure sensor 57; Oxidation-reduction potential testing arrangement 91, biological community structure testing arrangement 92, pH value testing arrangement 93, salinity testing arrangement 94, BOD testing arrangement 95, gas component testing arrangement 96, viscosity of crude testing arrangement 97, By Various Groups In Crude Oil testing arrangement 98.
The specific embodiment
By reference to the accompanying drawings 1, take certain microbial oil displacement to hide---in a district Ng3 closed test be example, the present invention is further set forth:
A kind of microbial oil displacement is hidden the method for oily production fluid high temperature, high pressure and anaerobism sampling, comprises the following steps:
(1) reservoir temperature pressure test and control
At first in detecting by pressure-detecting device, a district Ng3 reservoir pressure is 10.0MPa, during temperature-detecting device detects, the reservoir temperature of a district Ng3 is 69 ℃, then feed back to respectively the temperature and pressure control device, the constant pressure that pressure control device is controlled sampler is 10MPa, and the temperature constant that temperature control equipment is controlled sampler is 69 ℃.
(2) sampler Anaerobic Treatment
Utilize vacuum pump that air residual in wellhead connection device, production fluid treating apparatus, oil gas water-sampling device is extracted out, the pumpdown time is 30 minutes.
(3) oil gas water high pressure-temperature separates
Open the cross valve of wellhead connection device, the 7N11 produced liquid in oil well passes through profit one-level separator successively, and the profit secondary separation device is got and obtained 69 ℃, 10MPa recovered water 45L, normal temperature and pressure gas 98L, crude oil 23L and waste liquid 29L.
(4) oil gas water anaerobism and high-pressure sampling
Utilize high pressure-temperature sampler and anaerobism sampler from the recovered water gathering-device, carry out under a district Ng3 reservoir temperature and pressure sampling and anaerobism sample, sampling amount is respectively 1.0L and 2.0L.Utilize the crude oil sampling apparatus 1.5L that draws oil sample from the crude oil gathering-device.Utilize gas sampling device to get gas sample 0.5L from gas collector.
(5) oil gas water sample on-line testing
After the oil gas water sample takes into, carry out online oxidation-reduction potential, biological community structure, salinity, the pH value of recovered water, viscosity of crude, gas composition and component test.Test result is as follows:
Oxidation-reduction potential :-251mV
Biological community structure test result: microbiologic population's sum 2.5 * 10
8individual/ml, sulfate reducing bacteria 1.5 * 10
7individual/ml, methanogen 0.5 * 10
7individual/ml, saprophytic bacteria 3.5 * 10
6individual/ml, hydrocarbon oxidation bacteria 2.5 * 10
7individual/ml.
Salinity: 3652mg/L
PH value: 7.6
Viscosity of crude: 2563mpa.s
Gas composition machine component: methane 71.5%, H
2s 25.6%, CO
22.2%, H
20.7%.
(6) oil gas water test result is processed and teletransmission
After on-line testing completes, carry out test result and compile, then carry out teletransmission, laboratory obtains the result of on-line testing.
(7) sampler cleans
After having sampled, utilize the elevated pressure nitrogen in sampler to be cleaned residual fraction crude oil or recovered water in sampler.Clean 20 minutes consuming time.
(8) waste liquid is recycled
Having sampled rear remaining recovered water, crude oil and gas sends laboratory back to and is recycled.Waste liquid after cleaning effluxes after harmless treatment.
A kind of oil reservoir production fluid sampler driven for microorganism of the present invention, comprise well head linkage unit 1, oil gas water collector unit 2, profit one-level separative element 3, profit the second-order separation unit 4, recovered water collector unit 5, high-pressure sampling device 6, reservoir temperature and pressure-detecting device 7, temperature and pressure control device 8, multi-parameters test unit 9, anaerobic processing device 10, data are processed and remote transmission device 11, waste-liquid cleaning device 12, gas collector 13, crude oil gathering-device 14, anaerobism sampler 15, waste collecting device 16, crude oil sampling apparatus 17 and gas sampling device 18, described well head linkage unit 1 connects respectively waste-liquid cleaning device 12, reservoir temperature and pressure-detecting device 7, well mouth of oil well and oil gas water collector unit 2, described oil gas water collector unit 2 connects profit one-level separative element 3, profit the second-order separation unit 4, recovered water collector unit 5 and high-pressure sampling device 6 successively, and described oil gas water collector unit 2 connects gas collector 13 by high-pressure stop valve, described profit one-level separative element 3 and profit the second-order separation unit 4 are communicated with crude oil gathering-device 14 by high-pressure stop valve respectively, described recovered water collector unit 5 is communicated with anaerobism sampler 15 and waste collecting device 16 by high-pressure stop valve, and the bottom of recovered water collector unit 5 is communicated with anaerobic processing device 10, the output connection data of multi-parameters test unit 9 is processed and remote transmission device 11, and input connects gas collector 13, high-pressure sampling device 6 and anaerobic processing device 10, described crude oil sampling apparatus 17 connects crude oil gathering-device 14 by high-pressure stop valve, and gas sampling device 18 connects gas collector 13 by high-pressure stop valve.
With reference to accompanying drawing 2-6, the oil gas water collector unit 2 in the present invention is comprised of oil gas water collecting device 21, high-pressure stop valve 22, high-pressure stop valve 23, high-pressure stop valve 24, safety valve 25 and pressure sensor 26.
Profit one-level separative element 3 is by profit one-level separator 31, high-pressure stop valve 32, high-pressure stop valve 33, high-pressure stop valve 34, safety valve 35 and pressure sensor 36 form, profit one-level separative element is a column shape container, bear pressure and be not less than 20MPa, safety valve is equipped with at top, the temperature and pressure checkout gear, the profit entrance is arranged on top position, profit one-level separative element side, with distance from top be 5cm ~ 10cm, type petroleum crude recovery device pipeline entrance is arranged on profit one-level separative element lateral location, with distance from top be 10cm ~ 15cm, bottom is equipped with one and connects secondary oily-water seperating equipment pipeline outlet.
Profit the second-order separation unit 4 is comprised of profit secondary separation device 41, high-pressure stop valve 42, high-pressure stop valve 43, high-pressure stop valve 44, safety valve 45 and pressure sensor 46.Profit the second-order separation unit 4 is cylinder containers, bear pressure and be not less than 20MPa, safety valve, temperature and pressure checkout gear are equipped with in top, profit one-level parting liquid entrance is arranged on top position, profit secondary separation device side, with distance from top be 5cm ~ 10cm, type petroleum crude recovery device pipeline entrance is arranged on profit one-level separator lateral location, with distance from top be 10cm ~ 15cm; Bottom is equipped with two outlets, and one connects recovered water gathering-device pipeline, and one connects the waste liquid recovery apparatus pipeline.
Wherein, one-level is separated acquisition production fluid Crude Oil content and is no more than 1.0%, and formation water content is higher than 99.0%, and suspension content is lower than 0.5%, and in the second-order separation acquisition production fluid, oil content is lower than 0.1%, and formation water content is higher than 99.9%, and suspension content is lower than 0.1%.
Recovered water collector unit 5 is comprised of the water collecting device 51 of gathering, high-pressure stop valve 52, high-pressure stop valve 53, high-pressure stop valve 54, high-pressure stop valve 55, safety valve 56 and pressure sensor 57.
Device of the present invention has high pressure resistant and function high temperature, and maximum pressure is 32MPa, and maximum temperature is 150 ℃; There is vacuum extractor, make whole device under anaerobic carry out work; Have automatic temperature-adjusting function, temperature regulating range is 0 ℃ ~ 120 ℃, and the temperature departure is ± 0.1 ℃.Have the automatic Regulation function, the pressure adjustable range is 0.1MPa-35MPa, and the pressure departure is ± 0.1MPa.
Claims (4)
1. the oil reservoir production fluid sampling method driven for microorganism is characterized in that comprising the following steps:
(1) reservoir temperature pressure test and control:
At first detect by pressure-detecting device the reservoir pressure that microorganism drives, temperature-detecting device detects the reservoir temperature that microorganism drives, then feed back to respectively the temperature and pressure control device, pressure control device is controlled the pressure of production fluid sampler, and temperature control equipment is controlled the temperature of production fluid sampler;
(2) sampler Anaerobic Treatment:
Utilize vacuum pump that air residual in the well head linkage unit in the production fluid sampler, oil gas water collector unit, profit one-level separative element, profit the second-order separation unit, recovered water collector unit is extracted out, guarantee that whole device is in oxygen-free environment;
(3) oil gas water high pressure-temperature separates:
Open the cross valve of well head linkage unit, produced liquid in oil well passes through profit one-level separative element successively, and profit the second-order separation unit is got and obtained crude oil, waste liquid and high temperature and high pressure gas and recovered water;
(4) oil gas water anaerobism and high-pressure sampling:
Utilize high-pressure sampling device in the production fluid sampler and anaerobism sampler to sample from the recovered water collector unit to carry out the HTHP sampling and anaerobism samples, utilize crude oil sampling apparatus to draw oil sample from the crude oil gathering-device, utilize gas sampling device to get the gas sample from gas collector;
(5) oil gas water sample on-line testing:
After the oil gas water sample takes into, carry out online oxidation-reduction potential, biological community structure, salinity, the pH value of recovered water, viscosity of crude, family's component, gas composition and component test;
(6) oil gas water test result is processed and teletransmission:
After on-line testing completes, carry out test result and compile, then carry out teletransmission, laboratory obtains the result of on-line testing.
2. the oil reservoir production fluid sampling method driven for microorganism according to claim 1 is characterized in that: further comprising the steps of:
(7) sampler cleans
After above-mentioned steps has sampled, utilize the elevated pressure nitrogen in sampler to be cleaned residual fraction crude oil or recovered water in sampler, the standby HTHP that carries out the end opening well samples, and prevents from polluting the sample of end opening well;
(8) waste liquid is recycled
Sampled rear remaining recovered water, crude oil and gas and sent laboratory back to and recycled, the waste liquid after cleaning effluxes after harmless treatment.
3. the oil reservoir production fluid sampler driven for microorganism, it is characterized in that: comprise well head linkage unit (1), oil gas water collector unit (2), profit one-level separative element (3), profit the second-order separation unit (4), recovered water collector unit (5), high-pressure sampling device (6), reservoir temperature and pressure-detecting device (7), temperature and pressure control device (8), multi-parameters test unit (9), anaerobic processing device (10), data are processed and remote transmission device (11), waste-liquid cleaning device (12), gas collector (13), crude oil gathering-device (14), anaerobism sampler (15), waste collecting device (16), crude oil sampling apparatus (17) and gas sampling device (18), described well head linkage unit (1) connects respectively waste-liquid cleaning device (12), reservoir temperature and pressure-detecting device (7), well mouth of oil well and oil gas water collector unit (2), described oil gas water collector unit (2) connects profit one-level separative element (3), profit the second-order separation unit (4), recovered water collector unit (5) and high-pressure sampling device (6) successively, and described oil gas water collector unit (2) connects gas collector (13) by high-pressure stop valve, described profit one-level separative element (3) and profit the second-order separation unit (4) are communicated with crude oil gathering-device (14) by high-pressure stop valve respectively, described recovered water collector unit (5) is communicated with anaerobism sampler (15) and waste collecting device (16) by high-pressure stop valve, and the bottom of recovered water collector unit (5) is communicated with anaerobic processing device (10), described crude oil sampling apparatus (17) connects crude oil gathering-device (14) by high-pressure stop valve, and gas sampling device (18) connects gas collector (13) by high-pressure stop valve.
4. the oil reservoir production fluid sampler driven for microorganism according to claim 3, it is characterized in that: the output connection data of described multi-parameters test unit (9) is processed and remote transmission device (11), and input connects gas collector (13), high-pressure sampling device (6) and anaerobic processing device (10).
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| CN102425398A (en) * | 2011-11-17 | 2012-04-25 | 中国石油化工股份有限公司 | Produced fluid circulating treatment method for microbial flooding |
| CN105201472B (en) * | 2015-09-28 | 2017-09-22 | 中国石油化工股份有限公司 | A kind of method of reservoir endogenous micro-organisms group regulation and control |
| CN107356498A (en) * | 2017-05-18 | 2017-11-17 | 江苏中能科研仪器发展有限公司 | A kind of heavy oil wells viscosity reducing test device |
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| CN1424484A (en) * | 2003-01-08 | 2003-06-18 | 中国石化胜利油田有限公司采油工艺研究院 | Method for driving crude oil out by microorgans in crude oil |
| CN201043460Y (en) * | 2007-05-18 | 2008-04-02 | 中国石化股份胜利油田分公司采油工艺研究院 | Air-assistant microorganism-driving ground automatic filling device |
| CN101818634A (en) * | 2010-04-23 | 2010-09-01 | 中国石油化工股份有限公司 | Method for regulating and controlling microbial community for oil extraction |
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| AU2005331308B2 (en) * | 2005-05-03 | 2011-04-14 | Transworld Technologies Limited | Biogenic fuel gas generation in geologic hydrocarbon deposits |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1424484A (en) * | 2003-01-08 | 2003-06-18 | 中国石化胜利油田有限公司采油工艺研究院 | Method for driving crude oil out by microorgans in crude oil |
| CN201043460Y (en) * | 2007-05-18 | 2008-04-02 | 中国石化股份胜利油田分公司采油工艺研究院 | Air-assistant microorganism-driving ground automatic filling device |
| CN101818634A (en) * | 2010-04-23 | 2010-09-01 | 中国石油化工股份有限公司 | Method for regulating and controlling microbial community for oil extraction |
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Inventor after: Guo Liaoyuan Inventor after: Song Yongting Inventor after: Guo Shengxue Inventor after: Cao Yanbin Inventor after: Yuan Changzhong Inventor after: Gao Guangjun Inventor after: Hao Bin Inventor after: Pan Yongqiang Inventor after: Li Caifeng Inventor after: Cao Gongze Inventor after: Liu Tao Inventor after: Wang Jing Inventor before: Guo Liaoyuan Inventor before: Liu Tao Inventor before: Guo Shengxue Inventor before: Song Zhiyong Inventor before: Gao Guangjun Inventor before: Duan Chuanhui Inventor before: Hao Bin Inventor before: Li Caifeng Inventor before: Wu Xiaoling Inventor before: Du Chunan |
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Free format text: CORRECT: INVENTOR; FROM: GUO LIAOYUAN GUO SHENGXUE SONG ZHIYONG GAO GUANGJUN DUAN CHUANHUI HAO BIN LI CAIFENG WU XIAOLING DU CHUNAN LIU TAO TO: GUO LIAOYUAN YUAN CHANGZHONG GAO GUANGJUN HAO BIN PAN YONGQIANG LI CAIFENG CAO GONGZE LIU TAO WANG JING SONG YONGTING GUO SHENGXUE CAO YANBIN |
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Granted publication date: 20131218 Termination date: 20191113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |