CN104712289A - Method and system for plugging water of oil well by thickening thin oil - Google Patents
Method and system for plugging water of oil well by thickening thin oil Download PDFInfo
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- CN104712289A CN104712289A CN201510111964.8A CN201510111964A CN104712289A CN 104712289 A CN104712289 A CN 104712289A CN 201510111964 A CN201510111964 A CN 201510111964A CN 104712289 A CN104712289 A CN 104712289A
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- water
- oil
- oil well
- multiviscosisty
- liquid
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention provides a method and system for plugging water of an oil well by thickening thin oil. The method includes the steps that first, the oil well is cleaned with clean water; second, liquid for plugging water is prepared; third, the water plugging liquid prepared in the second step is injected into the oil well; fourth, after injection of the water plugging liquid stops, the oil well is closed for 24 h, and then production of the oil well is restored. According to the technology, the water plugging method is easy and convenient to operate on the spot, can improve the liquid production profile of the oil well, and is used for solving the problem that the water plugging effect on a high water outlet layer segment is bad. Water plugging agents for thickening the thin oil are evenly mixed on the ground and injected into the oil well, the water plugging agents firstly enter large-hole channels and high-permeability layers nearby the oil well, the viscosity of the water plugging agents is fast improved after the water plugging agents make contact with stratum water, the large-hole channels and the high-permeability layers can be effectively plugged, the liquid production profile is obviously improved, and the exploitation effect is improved.
Description
Technical field
The present invention relates to geophysics field, improving oil recovery rate technology specifically by surveying, particularly one is used for oil well thin oil multiviscosisty shutoff method.
Background technology
The most of oil field of China adopts waterflooding extraction mode, and the underground supplemented owing to causing after crude oil extraction is in debt, keeps simultaneously or improves formation pressure, realizing the high and stable yields of crude oil.At present, most water flood fields have entered " two high phase " mining phase of High water cut and high recovery percent of reserves, to there is after premature water breakthrough, water logging the problems such as High water cut in major part oil well, fluid swivels discharge pressure is greater than oil-producing formation and goes out oil pressure, oil well production oil reservoir energy declines, oil pumper pump efficiency reduces, and increases ground dehydrating plant load, reduces oil reservoir ultimate recovery.Therefore, in order to suppress oil field to enter high water-cut stage too early, improving oil field whole development effect, taking oilwell water shutoff method to improve development effectiveness very necessary.
Shutoff method main shutoff oil well Thief zone goes out liquid layer, reduces injection liquid inefficient cycle, changes injection liquid liquid flow path direction, improves sweep efficiency, suggestions for improvement.The most effective method of oilwell water shutoff uses chemical agent to carry out shutoff to water-yielding stratum, the water shutoff agent kind of current application is a lot, comprise: swell soil compound water shutoff agent (CN1618923A), macromolecule water shutoff agent (CN101205284A), slag water shutoff agent (CN101353571A), pre-crosslinking polymer Gelling Water shutoff Agent etc., in above shutoff method application, there is following shortcoming or deficiency:
(1) polymer gel, high score subclass water shutoff agent are after formation core is sheared, and viscosity obviously reduces, not even plastic, causes intake profile to improve DeGrain.Swell soil, slag particle class water shutoff agent exist and stratum compatibility issues, and the material such as solid particle, slag of injection easily injures reservoir, easily form permanent pollution.
(2) water shutoff agent injected all can not realize selective shut-off to oil-water-layer, i.e. water blockoff and stifled oil, but general by oil-water-layer together shutoff, causes part potentiality oil reservoir to start production.
(3) inject behind stratum cannot recycling for water shutoff agent, if oil well produced, also needs to take particular form to process, result in water blockoff financial cost high with running cost.
Therefore, be badly in need of developing a kind ofly do not injure reservoir, there is selective shut-off, the low cost water blockage pattern of recyclable recycling, for improving oil well liquid-producing section, reducing moisture content, improve water flooding effect.
Summary of the invention
The object of the present invention is to provide a kind of for oil well thin oil multiviscosisty shutoff method and system, it is the shutoff method that a kind of execute-in-place is easy, improve oil well liquid-producing section, for solving the problem bad to high water exit interval water plugging effect.Mixed on ground by thin oil multiviscosisty water shutoff agent, inject oil well, water shutoff agent preferentially enters in macropore near oil well, high permeability formation, after contacting with formation water, viscosity increases sharply, effective macropore plugging, high permeability zone, obviously improve production profile, improves development effectiveness.
According to technical scheme of the present invention, provide a kind of for oil well thin oil multiviscosisty shutoff method, it comprises the following steps: the first step: use clean water oil well; Second step: preparation water blockoff liquid; 3rd step: the water plugging liquid of above-mentioned preparation is injected oil well; 4th step: after water plugging liquid stops note, closes oil well 24h, then recovers oil well production.
Wherein, in a first step, the injection rate of clear water is at former producing well daily oil production (30-50m
3/ d) increase by 20% on basis, injection rate is no more than 50m
3.In second step, be less than 1%, viscosity is less than in the dewatered oil of 50mPa.s and adds 4.0% thickening agent, 1.0% auxiliary agent successively according to weight ratio to moisture content, other 95% are crude oil, stir 1 hour, make it mix, be mixed with thin oil multiviscosisty water shutoff agent.In the third step, the water plugging liquid of above-mentioned preparation is injected oil well, and injection mode is, the injection rate of water plugging liquid is at crude oil well note production fluid speed (30-50m
3/ d) reduction by 10% on basis, injection rate be centered by oil well, the reservoir pore space volume for the treatment of radius 10-15 rice, when injection liquid pressure exceedes stratum reset pressure, stop injecting water plugging liquid.
Preferably, mainly comprise for realizing this operating system for the thin oil multiviscosisty water blockoff of oil well thin oil multiviscosisty shutoff method: cementing truck (volume 50m
3, belt stirrer), tri-plunger high pressure pump (discharge capacity 3-5m
3/ h, operating pressure 8-16MPa), frequency-variable controller (out-put supply frequency 25-400Hz, adjustable), electromagnetic flowmeter (measurement category 30:1), high pressure line (withstand voltage 20MPa).
Further, water shutoff agent is made up of the thin oil that dewaters, thickening agent and auxiliary agent.
The present invention compared with prior art, has following advantage:
(1) crude oil is applied as primary raw material, wide in oil field Raw source, and good with oil reservoir compatibility, can dissolve each other with underground crude oil, not injure, do not pollute reservoir.
(2) thin oil multiviscosisty water blockage pattern has chance water thickening, meets oil not thickening feature, and alternative shutoff oil-water-layer, can flow after pressurization, by a relatively large margin suggestions for improvement.
(3) water shutoff agent main component is crude oil, injects behind stratum, along with oil field is continually developed, also can back production out, recycle, Produced Liquid does not need specially treated simultaneously, significantly reduces financial cost.
(4) field conduct process is simple, without the need to building preparation, injection station and relevant apparatus equipment, only injects with oil truck.
Accompanying drawing explanation
Fig. 1 is thin oil multiviscosisty water shutoff agent implant operation system flow;
Fig. 2 is on-the-spot water shutoff agent injection rate and pressure history;
Fig. 3 is on-the-spot water shutoff agent control system schematic diagram;
Fig. 4 is the structured flowchart of the programmable control system in on-the-spot water shutoff agent control system;
Fig. 5 is the electrical block diagram of the programmable control system in on-the-spot water shutoff agent control system;
Fig. 6 is the storage chip circuit theory diagrams of the programmable control system in on-the-spot water shutoff agent control system;
Fig. 7 is the magnetic coupling buffer circuit schematic diagram of the programmable control system in on-the-spot water shutoff agent control system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Additionally, protection scope of the present invention only should be limited to following concrete structure or parts or design parameter.
The shutoff method that a kind of execute-in-place is easy, improve oil well liquid-producing section for oil well thin oil multiviscosisty shutoff method and system, for solving the problem bad to high water exit interval water plugging effect.Mixed on ground by thin oil multiviscosisty water shutoff agent, inject oil well, water shutoff agent preferentially enters in macropore near oil well, high permeability formation, after contacting with formation water, viscosity increases sharply, effective macropore plugging, high permeability zone, obviously improve production profile, improves development effectiveness.
Water shutoff agent in the present invention is made up of the thin oil that dewaters, thickening agent and auxiliary agent, has the advantages that to meet water thickening, meet oily not thickening.It is above-mentioned that to be applicable to waterflooding oil field thin oil multiviscosisty shutoff method as follows:
The first step: use clean water oil well, the injection rate of clear water is at former producing well daily oil production (30-50m
3/ d) increase by 20% on basis, injection rate is no more than 50m
3.
Second step: preparation water blockoff liquid, be less than 1% to moisture content, viscosity is less than in the dewatered oil of 50mPa.s and adds 4.0% thickening agent, 1.0% auxiliary agent successively according to weight ratio, other 95% are crude oil, stir 1 hour, make it mix, be mixed with thin oil multiviscosisty water shutoff agent.
3rd step: the water plugging liquid of above-mentioned preparation is injected oil well, and injection mode is, the injection rate of water plugging liquid is at crude oil well note production fluid speed (30-50m
3/ d) reduction by 10% on basis, injection rate be centered by oil well, the reservoir pore space volume for the treatment of radius 10-15 rice, when injection liquid pressure exceedes stratum reset pressure, stop injecting water plugging liquid.
4th step: after water plugging liquid stops note, closes oil well 24h, then recovers oil well production.
The present invention also aims to provide a kind of operating system for thin oil multiviscosisty water blockoff, realize this and be used for oil well thin oil multiviscosisty shutoff method.This system mainly comprises: cementing truck (volume 50m
3, belt stirrer), tri-plunger high pressure pump (discharge capacity 3-5m
3/ h, operating pressure 8-16MPa), frequency-variable controller (out-put supply frequency 25-400Hz, adjustable), electromagnetic flowmeter (measurement category 30:1), high pressure line (withstand voltage 20MPa).
The invention provides a kind of alternative effect thin oil multiviscosisty deep profile correction system (as shown in Figure 3), realize alternative effect thin oil multiviscosisty transfer drive method.This system comprises reciprocating pump, intelligence control system, automatic charging device, agitator tank and blind controller system;
Wherein, reciprocating pump is Double-cylinder single-acting reciprocating pump, plunger motion speed is slow, the shearing caused in-depth profile control is very little, and variable-frequency electric acc power is 75Kw, and discharge capacity can be controlled in 6-15m3/h, maximum working pressure can reach 30MPa, overall mass 10t, mounting means is skid-mounted type, is convenient to resettlement.In addition, because plunger motion speed is slow, wear and tear little, so the time between overhauls(TBO) is very long, the cycle of operation on average can reach more than 60d;
(2) intelligence control system.Intelligence control system is made up of auto-control software, Industrial Personal Computer (IPC), AD/DA analog-digital converter, address card, flow meter, pressure gauge, liquid level feedback system, wireless transport module etc., whole system " heart ", all other parts switches and regulating command, sent after all also being analyzed by image data by it.The pressure and other parameters of the instantaneous delivery in work progress reaches system interface by wireless transmitting system, and operating personnel directly read by intelligence control system and adjust, and constructability personnel grasp well head at any time and inject situation;
(3) automatic charging device.In-depth profile control powder is fallen people and promotes in hopper by automatic charging device, material powder is delivered to tapered hopper by screw elevator, material in tapered hopper, through screw feeder, venturi-type eductors, electrical ball valve, pigment mixing head, is handled by powertrain system and is delivered to solution agitator tank;
(4) agitator tank.Water from water pot injects agitator tank, tentatively mixes at pigment mixing head with the supplied materials of automatical feeding system, enters in tank and fully stirs.Agitator tank is furnished with ultrasonic level gage, and can carry out Real-Time Monitoring to liquid level, signal reaches intelligence control system, has warning and automatic stopping function;
(5) blind controller system.Be made up of elements such as electromagnetic valve, frequency converter, multiple contactor, air switch, relays, complete equipment can realize chain automatic control and Non-follow control, can carry out in intelligence control system when controlling liquid level, flow and pressure, also manually can carry out between instrument controls.
Be made up of high-pressure water inlet piping, polymer feed device, crosslinking agent feed arrangement and a few major part of automatic control system with the above-mentioned dispensing control system (control system part wherein as shown in Figure 3) used for the system support of oil well thin oil multiviscosisty water blockoff, control system part as shown in Figure 3 comprises programmable control system, electromagnetic flowmeter, feeding screw, frequency converter, measuring pump and electric control valve.High-pressure water inlet pipeline has installed hand stop valve, electric control valve, electromagnetic flowmeter and ejector successively, High-Pressure Water through ejector time, crosslinking agent liquid or polymer dry powder can suck in water lines by the negative pressure of generation, add in profile control agent tank.In profile control agent tank, agitator is installed, can makes fully to mix into water and medicament.When in tank, liquid level reaches preset value, automatic program is out of service, and motor operated valve cuts out automatically, and profile control agent automatic preparation completes.Stuff level switch installed by the polymer storage tank of polymer feed device, and discharge outlet installs blanking switch and feeding screw, and during feed, polymer falls into hopper, and it is equipped with stuff level switch, and is connected with the ejector on inlet pipeline by flexible pipe.The drive motors of feeding screw, frequency converter and stuff level switch place are wired to control cabinet.Crosslinking agent feed arrangement has installed liquid-level switch on crosslinking agent storage tank, in exit, hand-operated valve is housed, and is connected to measuring pump subsequently.During charging, crosslinking agent falls into hopper, and hopper is connected with the ejector on inlet pipeline by flexible pipe.Measuring pump and liquid-level switch place are wired to control cabinet.Automatic control system is by human and machine interface unit, central control unit and detecting unit composition, by detecting flow of inlet water, implement PID to water inlet electric control valve to regulate, carry out hand control box and automatically control two kinds of modes, according to technological requirement, define chain control with crosslinking agent and polymer controls, complete the automatic control of whole system.Wherein, electric control valve can control piper keying and regulate the size of flow of inlet water; The instantaneous delivery of water inlet and accumulative liquid inlet volume can be obtained by electromagnetic flowmeter; High-Pressure Water, when ejector, can produce negative pressure and be sucked in profile control agent tank by medicament.Polymer feed device forms primarily of polymer storage tank, feeding screw and dry powder hopper.The stuff level switch that storage tank is installed can realize material low alarm function.The keying of feeding screw is controlled according to inflow and feed time automatically by control program, changes feeding quantity by frequency converter adjustable screw axle rotating speed.During feed, polymer falls into dry powder hopper, and polymer is sucked under suction function by the ejector on flexible pipe and inlet pipeline by hopper.Crosslinking agent feed arrangement is made up of crosslinking agent storage tank, measuring pump and crosslinking agent hopper.Liquid-level switch realizes liquid level low alarm function.The keying of measuring pump is controlled according to inflow and feed time automatically by control program, and its feed liquor speed is adjustable.During charging, crosslinking agent falls into hopper, and crosslinking agent is sucked under suction function by the ejector on flexible pipe and inlet pipeline by hopper.
As shown in figs. 4-7, further the programmable control system in water shutoff agent control system on-the-spot in the present invention is described in detail; Fig. 4 is the structured flowchart of the programmable control system in on-the-spot water shutoff agent control system; Fig. 5 is the electrical block diagram of the programmable control system in on-the-spot water shutoff agent control system; Fig. 6 is the storage chip circuit theory diagrams of the programmable control system in on-the-spot water shutoff agent control system; Fig. 7 is the magnetic coupling buffer circuit schematic diagram of the programmable control system in on-the-spot water shutoff agent control system.
With reference to accompanying drawing 4, show in particular the structured flowchart of the programmable control system in on-the-spot water shutoff agent control system, the programmable control system in on-the-spot water shutoff agent control system comprises: power circuit, voltage sampling circuit, current sampling circuit, computation chip circuit, memory circuit, control circuit, liquid crystal display, infrared communication module, 485 communication modules, carrier communication module, ESAM security module and microprocessor.Power circuit is that modules circuit is powered; Voltage sampling circuit and current sampling circuit are input to the collection port of computation chip circuit; Computation chip circuit be used for control signal metering and by spi bus and microprocessor communication; Memory circuit passes through I2C bus and microprocessor communication, for storage control signal; Microprocessor is according to control signal output safety index signal; Liquid crystal display shows safe index signal, power, voltage, current information; Infrared communication module, 485 communication modules, carrier communication module are all by UART mouth and microprocessor communication; ESAM module adds the safety of control signal, only has the data could being rewritten control circuit by authentication.
With reference to accompanying drawing 5, provide the electrical block diagram of the programmable control system in on-the-spot water shutoff agent control system further, storage chip is by microprocessor I/O pin powered, under default conditions, I/O pin output low level, storage chip does not work, not power consumption, only have when needing access data, microprocessor just control I/O pin exports high level, and for storage chip is powered, storage chip exchanges data by I2C bus and microprocessor; The communication module such as RS485, carrier wave all connects the UART mouth of microprocessor through the isolation of magnetic coupling; Light resistor R1 mono-termination power end, the other end contact resistance R2 of light resistor R1 and the AD interface of microprocessor; The AD interface of resistance R2 mono-termination light resistor and microprocessor, the other end earth terminal of resistance R2.
With reference to accompanying drawing 6, provide the storage chip circuit theory diagrams of the programmable control system in on-the-spot water shutoff agent control system further, the I2C interface CPU_SDA that the I2C interface CPU_SCL end that the equal earth terminal of A0, A1, A2 and VSS of storage chip U1, the VCC port of storage chip U1 connect the general purpose I of microprocessor/O interface CPU_I/O end, the WP port earth terminal of storage chip U1, the SCL port of storage chip U1 connect microprocessor, the SDA port of storage chip U1 connect microprocessor holds; Electric capacity C1 is connected in parallel between the VCC port of storage chip U1 and WP port; Resistance R2 is connected in parallel between the VCC port of storage chip U1 and SCL port; Resistance R2 is connected in parallel between the VCC port of storage chip U1 and SDA port.
With reference to accompanying drawing 7, provide the magnetic coupling buffer circuit schematic diagram of the programmable control system in on-the-spot water shutoff agent control system further, the data that data receiver RX, V1B port is held with connecing data sending terminal TX, GND1 terminated communications modular power source of communication module, VOA/VIA port connects microprocessor that the VIA/VOA port of magnetic lotus root isolating chip U2 connects communication module are sent to data receiver CPU_RX, GND2 port that CPU_TX, VOB port connects microprocessor and hold with connecing power supply of microprocessor; Electric capacity C2 and resistance R4 is all connected on the VDD1 port of communication module power end VCCM and magnetic lotus root isolating chip U2; Electric capacity C3 and resistance R5 is all connected on the VDD2 port of power supply of microprocessor end VCC and magnetic lotus root isolating chip U2.
Below by embodiment, the present invention is further described.
Embodiment 1: thin oil multiviscosisty water plugging liquid process for preparation
Water plugging liquid, by dehydration thin oil 95%, thickening agent 4%, the auxiliary agent 1% according to weight ratio, stirs 1h with the speed of 200r/min, obtains uniform thin oil multiviscosisty water plugging liquid in normal temperature Agitation Tank.
Embodiment 2: the operating system flow chart of thin oil multiviscosisty water blockoff
In thin oil multiviscosisty water shutoff agent injection process, prepare water plugging liquid by cementing truck tank according to embodiment 1, after having prepared, by three plunger high head injection pumps, water plugging liquid is clamp-oned stratum through sleeve valve from oil jacket annular space.
1-cementing truck in Fig. 1; 2-frequency-variable controller; 3-tri-plunger high pressure pump; 4-electromagnetic flowmeter; 5-tubing valve; 6-sleeve valve; 7-tubing gauge.
Embodiment 3: carried out on-the-spot confidentiality in joyous western oil field and tested and achieve satisfied effect
Huan Xi oil field, the Liaohe River was through nearly 40 years waterflooding extractions, and enter development late stage at present, well water is all more than 90%, day produce oil is less than 1.5 tons, all do not dealt with problems by gel deep profile correction several times, within 2013, we have carried out thin oil multiviscosisty water blockoff, Be very effective to certain well of joyous west.
Joyous west well basic data:
Reservoir interpretation table
Joyous western oil field well, day production fluid 85.8 side, day produce oil 1.2 tons, moisture 98.6%.Oil well High water cut, determines to carry out thin oil multiviscosisty water blockoff.Design injection 100 side, actual injection 100 sides, injection process pressure history is shown in Fig. 2.After profile control agent terminates injection, with return water 50 side, profile control agent is replaced to oil reservoir deep, closing well 1 day.
After driving a well, day production fluid 64.5 side, day produce oil 9.9 tons, moisture 84.7%, tiredly increase oil 828 tons, precipitation 1050 side, successful.Accumulative enforcement 13 well at present, accumulative increasing oil 8857 tons.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.This area those skilled in the art are appreciated that when not deviating from the spirit and scope of the present invention of claims definition, can make various amendment in form and details.
Claims (6)
1., for an oil well thin oil multiviscosisty shutoff method, it comprises the following steps:
The first step: use clean water oil well;
Second step: preparation water blockoff liquid;
3rd step: the water plugging liquid of above-mentioned preparation is injected oil well;
4th step: after water plugging liquid stops note, closes oil well 24h, then recovers oil well production.
2. according to claim 1 for oil well thin oil multiviscosisty shutoff method, it is characterized in that, in a first step, the injection rate of clear water is at former producing well daily oil production (30-50m
3/ d) increase by 20% on basis, injection rate is no more than 50m
3.
3. according to claim 1 for oil well thin oil multiviscosisty shutoff method, it is characterized in that, in second step, be less than 1% to moisture content, viscosity is less than in the dewatered oil of 50mPa.s and adds 4.0% thickening agent, 1.0% auxiliary agent successively according to weight ratio, other 95% are crude oil, stir 1 hour, make it mix, be mixed with thin oil multiviscosisty water shutoff agent.
4. according to claim 1 for oil well thin oil multiviscosisty shutoff method, it is characterized in that, in the third step, the water plugging liquid of above-mentioned preparation is injected oil well, and injection mode is, the injection rate of water plugging liquid is at crude oil well note production fluid speed (30-50m
3/ d) reduction by 10% on basis, injection rate be centered by oil well, the reservoir pore space volume for the treatment of radius 10-15 rice, when injection liquid pressure exceedes stratum reset pressure, stop injecting water plugging liquid.
5. according to claim 1 for oil well thin oil multiviscosisty shutoff method, it is characterized in that, mainly comprising for realizing this operating system for the thin oil multiviscosisty water blockoff of oil well thin oil multiviscosisty shutoff method: cementing truck (volume 50m
3, belt stirrer), tri-plunger high pressure pump (discharge capacity 3-5m
3/ h, operating pressure 8-16MPa), frequency-variable controller (out-put supply frequency 25-400Hz, adjustable), electromagnetic flowmeter (measurement category 30:1), high pressure line (withstand voltage 20MPa).
6. arbitrary for oil well thin oil multiviscosisty shutoff method according to claim 1-5, it is characterized in that, water shutoff agent is made up of the thin oil that dewaters, thickening agent and auxiliary agent.
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| CN201510111964.8A CN104712289B (en) | 2015-03-14 | 2015-03-14 | One kind is used for oil well thin oil and is thickened shutoff method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837639A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Water plugging and yield increasing method for oil well |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618228A (en) * | 2012-02-23 | 2012-08-01 | 中国石油化工股份有限公司 | Plugging agent for clastic rock oil reservoir horizontal well, preparation method and water plugging method |
| CN102876305A (en) * | 2011-07-14 | 2013-01-16 | 中国石油化工股份有限公司 | Oil well water shutoff agent and oil well water shutoff method |
| CN103275682A (en) * | 2013-05-09 | 2013-09-04 | 中国石油天然气股份有限公司 | Emulsified acid for water plugging of oil well, preparation method of emulsified acid and oil well water-plugging method using emulsified acid |
-
2015
- 2015-03-14 CN CN201510111964.8A patent/CN104712289B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876305A (en) * | 2011-07-14 | 2013-01-16 | 中国石油化工股份有限公司 | Oil well water shutoff agent and oil well water shutoff method |
| CN102618228A (en) * | 2012-02-23 | 2012-08-01 | 中国石油化工股份有限公司 | Plugging agent for clastic rock oil reservoir horizontal well, preparation method and water plugging method |
| CN103275682A (en) * | 2013-05-09 | 2013-09-04 | 中国石油天然气股份有限公司 | Emulsified acid for water plugging of oil well, preparation method of emulsified acid and oil well water-plugging method using emulsified acid |
Non-Patent Citations (2)
| Title |
|---|
| 王桂勋等: "乳化原油选择性堵水室内研究", 《钻采工艺》 * |
| 肖传敏: "提高注水开发效果的稠化原油技术研究", 《精细石油化工进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837639A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Water plugging and yield increasing method for oil well |
| CN114837639B (en) * | 2021-02-01 | 2024-03-26 | 中国石油天然气股份有限公司 | Water plugging and yield increasing method for oil well |
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Effective date of registration: 20201117 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: PetroChina Co.,Ltd. Address before: 124010 Experimental Technology Research Institute of Liaohe oilfield exploration and development, Xinglongtai District, Panjin, Liaoning Patentee before: Xiao Chuanmin |