CN102654045A - Top air injection gravity-assisted flooding oil-extraction one-dimensional physical simulation experimental system - Google Patents
Top air injection gravity-assisted flooding oil-extraction one-dimensional physical simulation experimental system Download PDFInfo
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Abstract
The invention discloses a top air injection gravity-assisted flooding oil-extraction one-dimensional physical simulation experimental system. The system comprises a sample injection system, a simulation system, an output system, a PC (personal computer) monitoring system and a gas chromatography analyzer, wherein the sample injection system comprises an ISO (international organization for standardization) high-precision metering pump, a dead oil piston container, a natural gas piston container and a sample preparation device; the simulation system comprises an ISO high-precision metering pump, a formation water piston container, an air piston container, a six-way valve, a baking oven, an inclination angle marking instrument and a sand filling pipe; the output system comprises a separator, a helium cylinder and a gas metering instrument; and the PC monitoring system comprises a PC monitoring computer and a gas flow rate and quality controller. By adopting the experimental system disclosed by the invention, the consistency between a sample and formation crude oil can be ensured, an experimental result is more realistic and reliable, the characteristics of the structure of the formation can be realistically simulated, the output system has a sample online monitoring function, and the real-time property and the degree of automation are further improved.
Description
Technical field
The present invention is the auxiliary oil recovery one dimension physical simulation experiment system of driving of a kind of top air injection gravity about the oil development field concretely
Background technology
Auxiliary stable the driving of crestal gas injection gravity is considered to one of very potential method that effectively improves this type oil recovery, and its recovery ratio is the highest in all non-phase-mixing drivings, or even the twice of water drive.Owing to inject between gas and the crude oil and have density contrast; Can be through the reasonable rate of oil production of control; Utilize gravity stable to keep the less gas of density to separate with the bigger crude oil of density; Suppress the gas fingering when forming, avoid horizontal gas injection to drive the shortcomings such as the low and easy has channeling of expulsion efficiency that gas viscosity fingering and gravity segregation effect produced in the process with convenient fingering desire.In addition, since the sixties in 20th century, many in the world countries comprise that countries such as the U.S., Russia all carried out the technical research of lightweight oil reservoir injection air, and many deep layer lightweight oil reservoirs have been carried out the air injection field test, have all obtained success technical and economically; Though the exploitation of lightweight oil reservoir low-temperature oxidation is started late in China, because the air source is wide, with low cost, received extensive concern in recent years, crestal gas injection and air drive to combine more can bring into play efficient, economic characteristics.
The shortcoming of lightweight oil reservoir air injection exploitation is to have unsafe factor, and when promptly injecting air and crude oil and low-temperature oxidation not taking place fully react, hydrocarbon gas and oxygen mix are blasted easily in the output gas; Notes are adopted the unreasonable has channeling that causes more easily of parameter, and this just is strict with and carries out relevant in-house laboratory investigation early stage, and reasonably optimizing is annotated and adopted parameter on this basis.This drives experimental technique and device has proposed new challenge window to top air injection gravity is auxiliary.
Prior art is being carried out a large amount of work aspect lightweight oil reservoir air injection exploitation low-temperature oxidation dynamic evaluation experimental analogy method and the device, but still there is shortcoming in prior art:
1) can not the simulated formation inclination angle, can not represent true formation condition.
What 2) use in the experimentation is dead oil, can not represent the actual oxidation characteristics of formation crude oil.
3) model pipe horizontal positioned, adjustment becomes the stratigraphic dip difficulty, can not represent true formation condition, is easy to generate has channeling, has reduced time result's reliability.
4) therefore this device does not consider output gaseous mixture safety problem not to the air injection design.
Summary of the invention
The embodiment of the invention provides a kind of top air injection gravity to assist and has driven oil recovery one dimension physical simulation experiment system, and described experimental system comprises: join a kind injected system, simulation system, output system, PC monitoring system and gas chromatographicanalyzer; Wherein,
The described kind injected system of joining comprises: ISO high-precision measuring pump, dead oil piston container, natural gas piston container and join a kind device; Described ISO high-precision measuring pump is connected with natural gas piston container with said dead oil piston container respectively through valve; Described dead oil piston container and natural gas piston container all through valve with join a kind device and be connected; Said ISO high-precision measuring pump changes the dead oil in the dead oil piston container over to joins a kind device; Said ISO high-precision measuring pump changes the natural gas in the said natural gas piston container over to according to PVT test steam oil ratio (SOR) joins a kind device, sets reservoir temperature and pressure through the said kind device of joining, and forms the oil of living in kind device in said joining;
Said simulation system comprises: ISO high-precision measuring pump, formation water piston container, air slide container, six-way valve, baking oven, inclination angle marking appliance and fill out sand tube; Described ISO high-precision measuring pump is connected with the air slide container with said formation water piston container respectively through valve; Said formation water piston container, air slide container and fill out sand tube all are connected with said six-way valve; Described fill out sand tube is arranged in the baking oven; The pointer of said inclination angle marking appliance is fixed in said fill out sand tube, and described simulation system is connected with the said kind device of joining of joining kind injected system through said six-way valve;
Said output system comprises: eliminator, helium tank and gas dosing meter, and described eliminator is connected with the gas quantifier with said helium tank respectively through pipeline, and said eliminator is connected with the fill out sand tube of said simulation system through valve and pipeline;
Said PC monitoring system comprises: PC monitoring computer and gas flow quality controller; Said PC monitoring computer is connected with the gas flow quality controller through data wire; Said gas flow controller is connected through the helium tank of pipeline with said output system, and said PC monitoring computer is connected through the gas dosing meter of data wire with said output system;
Said gas chromatographicanalyzer is connected through the gas dosing meter of pipeline with said output system.
Adopt pilot system of the present invention, can simulate maximum oil and hide pressure 40MPa, 200 ℃ of simulating oil deposit maximum temperatures; Guarantee sample and in-place oil uniformity, make experimental result more true and reliable, real simulation stratigraphic structure characteristic; Use band form fill out sand tube; Can intuitively observe the gas displacing front, possess the automatic dilution of output gas, prevent that the indoor oil experiment output gas of living from reaching the danger that explosion limit causes blast; Possess output system sample on-line monitoring function, improved real time implementation, automaticity.
For let above-mentioned and other purposes of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended graphicly, elaborates as follows.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 drives the structured flowchart of oil recovery one dimension physical simulation experiment system for top of the present invention air injection gravity is auxiliary;
Fig. 2 drives the system construction drawing of oil recovery one dimension physical simulation experiment system for top of the present invention air injection gravity is auxiliary.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention provides a kind of top air injection gravity to assist and has driven oil recovery one dimension physical simulation experiment system, and this system comprises: join a kind injected system, model system, output system, PC monitoring system and gas chromatographicanalyzer;
Joining a kind injected system comprises: ISO high-precision measuring pump, dead oil piston container, natural gas piston container and join a kind device; ISO high-precision measuring pump is connected with natural gas piston container with dead oil piston container respectively through valve; Dead oil piston container and natural gas piston container all through valve with join a kind device and be connected; ISO high-precision measuring pump changes the dead oil in the dead oil piston container over to joins a kind device; ISO high-precision measuring pump changes the natural gas in the natural gas piston container over to according to PVT test steam oil ratio (SOR) joins a kind device, sets reservoir temperature and pressure through the said kind device of joining, and forms the oil of living in kind device in said joining;
Model system comprises: ISO high-precision measuring pump, formation water piston container, air slide container, six-way valve, baking oven, inclination angle marking appliance and fill out sand tube; ISO high-precision measuring pump is connected with the air slide container with formation water piston container respectively through valve; Formation water piston container, air slide container and fill out sand tube all are connected with six-way valve; Fill out sand tube is arranged on the bearing in the baking oven; The pointer of inclination angle marking appliance is fixed on the said fill out sand tube, and the indicating dial of inclination angle marking appliance is fixed on the bearing, and the six-way valve of model system is connected with the said kind device of joining of joining kind injected system through pipeline;
The output system comprises: eliminator, helium tank and gas dosing meter, and eliminator is connected with the gas quantifier with helium tank respectively through pipeline, and eliminator is connected with the fill out sand tube of said simulation system through valve and pipeline;
The PC monitoring system comprises: PC monitoring computer and gas flow quality controller; The PC monitoring computer is connected with the gas flow quality controller through data wire; Gas flow controller is connected through the helium tank of pipeline with the output system, and the PC monitoring computer is connected with the gas dosing meter of output system through data wire;
Gas chromatographicanalyzer is connected with the gas dosing meter of output system through pipeline.
As shown in Figure 1; Be the structured flowchart of experimental facilities disclosed by the invention, top of the present invention air injection gravity is auxiliary to be driven oil recovery one dimension physical simulation experiment device and comprises: join kind injected system 101, model system 102, PC monitoring system 103, output system 104 and analytical system 105.
In the present embodiment join kind injected system 101 by ISCO high-precision measuring pump, dead oil piston container, natural gas piston container, mass-flow gas meter, join a kind device, pressure meter and manual pump and form.Wherein, Dead oil piston container through valve respectively with ISCO high-precision measuring pump, join the upper end import of kind device and be connected; Natural gas piston container is connected with ISCO high-precision measuring pump, and connects with mass-flow gas meter, mass-flow gas meter series connection again through valve with join kind device on an import be connected; Manual pump with join a kind device lower end import and be connected, join a kind device outlet and be connected with six-way valve through a pipeline.Pressure meter is arranged at manual pump and joins on the connecting line between kind device.
Model system is made up of ISCO high-precision measuring pump, valve, formation water piston container, air slide container, mass-flow gas meter, six-way valve, baking oven, fill out sand tube, inclination angle marking appliance and counterbalance valve.Formation water piston container is connected with six-way valve with ISCO high-precision measuring pump respectively through valve; The air slide container is connected with ISCO high-precision measuring pump; And be connected with six-way valve through mass-flow gas meter series connection; Six-way valve is connected through fill out sand tube is suitable for reading in pipeline and the baking oven, and the fill out sand tube end opening disposes valve and counterbalance valve, is connected with the output system through pipeline.Wherein, the inclination angle marking appliance in the baking oven is made up of blister formula level gauge, pointer, dial, and pointer and fill out sand tube are fixed together.
The PC monitoring system is made up of PC monitoring computer, gas mass flow amount controller.The gas mass flow amount controller is connected with the PC monitoring computer through data wire.
The output system takes into account pipeline by eliminator, gas dosing and forms.
The gas dosing meter is connected through the PC monitoring computer of data wire and PC monitoring system; Eliminator, gas dosing meter connect through pipeline.
Analytical system is made up of gas chromatographicanalyzer.
The gas dosing meter of gas chromatographicanalyzer and output system is connected through pipeline, and the gaseous sample that the output system generates is analyzed.
As shown in Figure 2, be the auxiliary sketch map that drives oil recovery one dimension physical simulation experiment device of the disclosed top of one embodiment of the invention air injection gravity.
Join kind injected system by ISCO high-precision measuring pump 1, valve 2, valve 3, dead oil piston container 4, natural gas piston container 5, mass-flow gas meter 7, valve 8, valve 9, join kind device 10, pressure meter 11, manual pump 12, valve 13 and form.
Dead oil piston container 4 through valve 2, valve 6 respectively with ISCO high-precision measuring pump 1 with join the 10 upper end imports of kind device and be connected; 7 series connection of natural gas piston container 5 and mass-flow gas meter respectively at ISCO high-precision measuring pump 1 with join the 10 upper end imports of kind device and be connected; Manual pump 12 with join the 10 lower end imports of kind device and be connected, join 10 outlets of kind device and be connected with six-way valve 18 through pipelines.According to according to oil field PVT test gas-oil ratio, control ISCO high-precision measuring pump 1, change a certain amount of natural gas over to by natural gas piston container 5 and join in kind device 10; And change a certain amount of dead oil over to by dead oil piston container 4 and to join in kind device 10, setting the temperature of joining kind device 10 is reservoir temperature, pressure is reservoir pressure; Make that joining kind device 10 fully stirs, make natural gas in dead oil, fully dissolve and form the oil sample of living that it is composite to accomplish in-place oil; Thereby realize that experimental system adopts the oil sample of living; Guarantee the uniformity of oil sample sample and bottom crude oil, and through above-mentioned to joining kind setting of device pressure and temperature, make native system; Maximum oil be can simulate and pressure 40MPa, 200 ℃ of simulating oil deposit maximum temperatures hidden.
In practical application, joining kind system and model system can public ISCO high-precision measuring pump, shown in the embodiment of Fig. 2.
Model system is made up of ISCO high-precision measuring pump 1, valve 14, formation water piston container 16, valve 15, air slide container 17, mass-flow gas meter 18, six-way valve 19, baking oven 24, fill out sand tube 21, valve 25, differential pressure indicator 22, inclination angle marking appliance 23 and counterbalance valve 26 in the present embodiment.
Formation water piston container 16 is connected with six-way valve 19 with ISCO high-precision measuring pump 1 respectively through valve 14; 18 series connection are connected with six-way valve 19 respectively at ISCO high-precision measuring pump 1 air slide container 17 with mass-flow gas meter; Six-way valve 19 is connected with baking oven 24 interior fill out sand tube 21 inlets through pipeline; Fill out sand tube 21 outlet configuration valves 25 and counterbalance valve 26 are connected with the output system through pipeline.Change the formation water in the formation water piston container 16 over to fill out sand tube 21 saturated formation waters through ISCO high-precision measuring pump 1; Counterbalance valve 25 is adjusted into reservoir pressure, makes irreducible water saturation through manual pump 12 joining in kind device 10 composite stratum oily displacement fill out sand tube 21 formation waters of living; Utilize air slide container 17 mesohigh air to carry out fill out sand tube 21 mother oil displacements through ISCO high-precision measuring pump 1.
Wherein inclination angle marking appliance 23 is made up of blister formula level gauge 231, pointer 232, dial 233, and pointer 232 is fixed together with fill out sand tube 21
The output system is made up of eliminator 27, gas dosing meter 28 and the pipeline of carrying liqs function of measuring.
The PC monitoring system is made up of PC 32, gas mass flow amount controller 31.
Gas dosing meter 28 is connected with PC monitoring system 32 through data wire; Gas mass flow amount controller 31 is connected with PC monitoring system 32 through data wire.
The eliminator of carrying liqs function of measuring, gas dosing meter 28 connect through pipeline.
Gas chromatographicanalyzer 29 and extraction system gas quantifier 28 are connected through pipeline.
The crude oil that produces from model system gets into the eliminator 27 of being with function of measuring; Carrying out gas and oil by eliminator 27 separates; Eliminator output gas is analyzed throughput by 28 meterings of gas dosing meter through PC monitoring computer 32, control gas mass flow amount controller 31 control dilution helium gas flows; Get into gas chromatograph 29 by helium 1:1 dilution back and carry out component analysis, obtain oxidation rate and gas component result; The eliminator 27 metering oil of band function of measuring, the water yield are carried out output gas through helium tank 30 and are diluted automatically, prevent that the indoor oil experiment output gas of living from reaching explosion limit.
Experimental system disclosed by the invention, when specifically using, operate as follows:
Valve-off 6, valve 8, valve 24 are opened valve 9, utilize 20 pairs in vacuum pump to join kind injected system and model system vacuumizes 0.1MPa.
Open valve 2, valve 6 and valve 9, change a certain amount of dead oil in the dead oil piston container 4 over to through ISCO high-precision measuring pump 1 and join in kind device 10 valve-off 6; Open valve 3, valve 8; Join in kind device 10 according to changing a certain amount of natural gas over to by natural gas piston container 5 according to oil field PVT test gas-oil ratio, valve-off 8 and valve 9, configuring the temperature of joining kind device 10 is reservoir temperature; Pressure is reservoir pressure; Make that joining kind device 10 fully stirs, make natural gas in dead oil, fully dissolve and form the oil sample of living that it is composite to accomplish in-place oil.
Carrying out back-up sand dish 21 to formation water in the formation water piston container 16 through ISCO high-precision measuring pump 1 guarantees adequate food and formation water; Counterbalance valve 25 is adjusted into reservoir pressure, makes irreducible water saturation through manual pump 12 joining in kind device 10 composite stratum oily displacement fill out sand tube 21 formation waters of living; Utilize air slide container 17 mesohigh air to carry out fill out sand tube 21 mother oil displacements through ISCO high-precision measuring pump 1.Output crude oil gets into the eliminator 27 of band function of measuring; Output gas is by 28 meterings of gas dosing meter; Through 32 fens gassing rates of PC monitoring system; Control gas mass flow amount controller 31 control dilution helium gas flows get into gas chromatograph 29 by helium 1:1 dilution back and carry out component analysis, obtain oxidation rate and gas component result; The eliminator 27 metering oil of band function of measuring, the water yield; Regularly get gas appearance and crude oil sample analysis, finish up to experiment.
Compared with prior art there is advantage in technical scheme of the present invention:
1) technical scheme of the present invention can be simulated maximum oil and hide pressure 40MPa, 200 ℃ of simulating oil deposit maximum temperatures; 2) adopt the oil of living, guarantee sample and in-place oil uniformity, experimental result is more true and reliable; 3) fill out sand tube of employing adjustable inclination, real simulation stratigraphic structure characteristic; 4) use band form fill out sand tube, can intuitively observe the gas displacing front; 5) possess the automatic dilution of output gas, prevent that the indoor oil experiment output gas of living from reaching the danger that explosion limit causes blast; 6) possess output system sample on-line monitoring function, improved real time implementation, automaticity.
Used specific embodiment among the present invention principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. a top air injection gravity is assisted and is driven oil recovery one dimension physical simulation experiment system, it is characterized in that described experimental system comprises: join a kind injected system, model system, output system, PC monitoring system and gas chromatographicanalyzer; Wherein,
The described kind injected system of joining comprises: ISO high-precision measuring pump, dead oil piston container, natural gas piston container and join a kind device; Described ISO high-precision measuring pump is connected with natural gas piston container with said dead oil piston container respectively through valve; Described dead oil piston container and natural gas piston container all through valve with join a kind device and be connected; Said ISO high-precision measuring pump changes the dead oil in the dead oil piston container over to joins a kind device; Said ISO high-precision measuring pump changes the natural gas in the said natural gas piston container over to according to PVT test steam oil ratio (SOR) joins a kind device, sets reservoir temperature and pressure through the said kind device of joining, and forms the oil of living in kind device in said joining;
Said model system comprises: ISO high-precision measuring pump, formation water piston container, air slide container, six-way valve, baking oven, inclination angle marking appliance and fill out sand tube; Described ISO high-precision measuring pump is connected with the air slide container with said formation water piston container respectively through valve; Said formation water piston container, air slide container and fill out sand tube all are connected with said six-way valve; Described fill out sand tube is arranged in the baking oven; The pointer of said inclination angle marking appliance is fixed in said fill out sand tube, and the six-way valve of described simulation system is connected with the said kind device of joining of joining kind injected system through pipeline;
Said output system comprises: eliminator, helium tank and gas dosing meter, and described eliminator is connected with the gas quantifier with said helium tank respectively through pipeline, and said eliminator is connected with the fill out sand tube of said simulation system through valve and pipeline;
Said PC monitoring system comprises: PC monitoring computer and gas flow quality controller; Said PC monitoring computer is connected with the gas flow quality controller through data wire; Said gas flow controller is connected through the helium tank of pipeline with said output system, and said PC monitoring computer is connected through the gas dosing meter of data wire with said output system;
Said gas chromatographicanalyzer is connected through the gas dosing meter of pipeline with said output system.
2. the auxiliary oil recovery one dimension physical simulation experiment system of driving of top as claimed in claim 1 air injection gravity; It is characterized in that; The described kind injected system of joining also comprises: manual pump and pressure meter; Described manual pump is connected with the said kind device of joining through a valve, and said pressure meter is arranged at described manual pump and described joining between kind device.
3. the auxiliary oil recovery one dimension physical simulation experiment system of driving of top as claimed in claim 1 air injection gravity; It is characterized in that; The described kind injected system of joining also comprises: mass-flow gas meter; Said mass-flow gas meter is connected with natural gas piston container, and is connected with the said kind device of joining through valve.
4. top as claimed in claim 1 air injection gravity is auxiliary to drive oil recovery one dimension physical simulation experiment system, it is characterized in that described model system also comprises: counterbalance valve, said fill out sand tube is connected through the eliminator of counterbalance valve with said output system.
5. top as claimed in claim 1 air injection gravity is auxiliary to drive oil recovery one dimension physical simulation experiment system, it is characterized in that described fill out sand tube is provided with form.
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| CN113884620B (en) * | 2020-07-01 | 2024-03-01 | 中国石油天然气股份有限公司 | Back pressure control device, system and application for oil reservoir physical model experiment |
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