CN112051390A - Oil field demulsification dehydration performance evaluation system and evaluation method - Google Patents
Oil field demulsification dehydration performance evaluation system and evaluation method Download PDFInfo
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- 238000011156 evaluation Methods 0.000 title claims abstract description 101
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2847—Water in oil
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N15/04—Investigating sedimentation of particle suspensions
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/02—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using precipitation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1033—Oil well production fluids
Abstract
The invention discloses an oil field demulsification dehydration performance evaluation system and an evaluation method. The oil field demulsification dehydration performance evaluation system comprises: the device comprises a produced liquid preparation unit, a demulsifier injection unit, a demulsification and dehydration performance evaluation unit, an experiment medium recovery unit and an experiment control unit, wherein the produced liquid preparation unit and the demulsifier injection unit are communicated with the demulsification and dehydration performance evaluation unit through a liquid supply pipeline, the experiment medium recovery unit is communicated with the demulsification and dehydration performance evaluation unit through a medium recovery pipeline, the produced liquid preparation unit is used for preparing an emulsion of crude oil and water, the demulsifier injection unit is used for injecting a demulsifier into the emulsion, the experiment control unit is used for controlling the temperature and the pressure of the emulsion demulsification and dehydration process, the demulsification and dehydration performance evaluation unit is used for acquiring the crude oil and water quality information of different liquid level layers in the emulsion demulsification and dehydration process and generating dehydrated crude oil and dehydrated sewage, and the experiment medium recovery unit is used for respectively recovering the dehydrated.
Description
Technical Field
The disclosure relates to the technical field of oilfield ground gathering and transportation, in particular to an oilfield demulsification and dehydration performance evaluation system and an oilfield demulsification and dehydration performance evaluation method.
Background
In the production process of oil fields, the produced fluid of oil wells contains crude oil and water, and the crude oil and the water form relatively stable emulsion under the action of surface active substances such as colloid, asphaltene and the like in the crude oil. The emulsion mostly exists in a Water-in-Oil (expressed as W/O, W is Water, and represents Water, and O is Oil, and represents Oil) state, and according to the difference of Oil production process and the change of the property of produced liquid, it may simultaneously contain multiple emulsion forms of Oil-in-Water (expressed as O/W) and Oil-in-Water-in-Oil (expressed as O/W/O) or Water-in-Oil-in-Water (expressed as W/O/W), etc.
One of the important tasks of the oil field ground gathering and transportation treatment process is to realize the complete separation of oil and water and ensure that the water content of the dehydrated crude oil is reduced to below 0.5 percent or even lower so as to improve the operation efficiency of a long-distance pipeline and reduce the operation corrosion risk.
The demulsification and dehydration performances of the produced fluid of the oil well and the demulsifier are determined through indoor experiments, and the method is an important basis for oil field ground engineering design, oil field production process modification and production management. The indoor demulsification and dehydration performance evaluation needs to provide the dehydration speed of the produced fluid of the oil well after the demulsifier is added, the water content of the dehydrated crude oil, the water content gradient distribution in a dehydration facility, the oil-water interface condition, the quality of the dehydrated sewage and the like. However, the current indoor test device and method have low coincidence with the actual working conditions of industrial production, and actual demulsification and dehydration parameters in industrial production cannot be obtained exactly.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the application provides an oil field demulsification and dehydration performance evaluation system and an evaluation method, which can simulate the real working condition of industrial production, evaluate the demulsification and dehydration performance under the dynamic condition and improve the reproducibility of an experimental result in the industrial production.
The oil field demulsification dehydration performance evaluation system provided by the embodiment of the application comprises: the device comprises a produced liquid preparation unit, a demulsifier injection unit, a demulsification and dehydration performance evaluation unit, an experimental medium recovery unit and an experimental control unit, wherein the produced liquid preparation unit and the demulsifier injection unit are communicated with the demulsification and dehydration performance evaluation unit through a liquid supply pipeline, the experimental medium recovery unit is communicated with the demulsification and dehydration performance evaluation unit through a medium recovery pipeline, the produced liquid preparation unit is used for preparing emulsion of crude oil and water and supplying the emulsion to the demulsification and dehydration performance evaluation unit, the demulsifier injection unit is used for injecting demulsifier into a liquid supply pipeline, the experimental control unit is used for controlling the temperature and the pressure of the demulsification process of the emulsion, and the demulsification and dehydration performance evaluation unit is used for obtaining the crude oil and the water quality information of different liquid level layers in the demulsif, and the experimental medium recovery unit is used for respectively recovering the removed crude oil and the removed sewage.
The embodiment of the application also provides an oil field demulsification and dehydration performance evaluation method, and the oil field demulsification and dehydration performance evaluation system adopting the embodiment comprises the following steps: preparing an emulsion, and feeding the emulsion into a demulsification and dehydration performance evaluation unit through a liquid supply pipeline; injecting a demulsifier into the liquid supply pipeline; crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained through a breaking and dehydrating performance evaluation unit, and the crude oil after being removed and the sewage after being removed are generated; recovering crude oil and sewage.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
FIG. 1 is a structural diagram of an oil field demulsification dehydration performance evaluation device;
FIG. 2 is a structural diagram of an oil field demulsification and dehydration performance evaluation system in an embodiment of the present application;
fig. 3 is a structure diagram of a settling tank in an embodiment of the present application.
Description of the reference numerals
10-a colorimetric cylinder; 20-constant temperature water bath; 100-demulsification dehydration performance evaluation unit
101-a settling tank; 102-a liquid extraction pipeline; 103-liquid taking valve;
104-a liquid supply auxiliary pipeline; 105-a liquid supply valve; 106-liquid distributor;
107-crude oil recovery secondary pipeline 108-crude oil recovery valve; 109-a secondary sewage recovery pipeline;
110-a sewage recovery valve; 111-a first drain conduit; 112-a first vent conduit;
113-a first drain valve; 114-a first vent valve; 200-a crude oil supply unit;
210-crude oil supply unit; 211-crude oil storage tank; 212-crude oil pipeline;
213-a first metering pump; 214-crude oil valve; 220-produced water supply unit;
221-a produced water storage tank; 222-a produced water pipeline; 223-a second metering pump;
224-produced water valve; 230-crude oil and produced water mixing pipe; 240-a mixer;
300-a demulsifier injection unit; 310-a demulsifier preparation tank; 320-a demulsifier conduit;
330-third metering pump; 340-a demulsifier valve; 400-Experimental Medium recovery Unit
410-crude oil recovery tank; 411-a second drain line; 412-a second drain valve;
413-a second vent conduit; 414-a second vent valve; 420-a sewage recovery tank;
421-a third drainage conduit; 422-third drain valve; 423-third vent line;
424-third vent valve; 500-experiment control unit; 501-a first gas storage tank;
502-a second gas storage tank; 503-a third gas reservoir; 504-a first gas supply duct;
505-a second gas supply duct; 506-a third gas supply duct; 507-a first pressure control valve;
508-a second pressure control valve; 509-a third pressure control valve; 510-a first liquid level meter;
511-a second level gauge; 512-a third level gauge; 610-a liquid supply duct;
620-media recovery conduit; 621-crude oil recovery pipeline; 622-sewage recovery pipeline;
1-oil field demulsification dehydration performance evaluation system.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
FIG. 1 is a structural diagram of an oil field demulsification dehydration performance evaluation device. As shown in fig. 1, the emulsion for experiment is poured into a cuvette 10, the volume of which may be 100mL, and the cuvette 10 is placed in a thermostatic water bath 20 and kept at a predetermined demulsification and dehydration temperature for a predetermined time. Adding a specified demulsifier, mixing by hand shaking or mechanical means, and putting into a constant-temperature water bath 20. And recording the dewatering water yield, the oil-water interface condition and the dewatering water quality description at different times. The removed crude oil and water can be sampled according to the requirement for quality determination.
The above method has the following problems:
(1) the flow state is not consistent with the industrial demulsification dehydration process: the evaluation method is used for evaluating the demulsification and dehydration performances under the completely static condition. In the industrial demulsification and dehydration treatment process, the whole demulsification and dehydration process is a dynamic process. In a three-phase separator and a demulsification dehydration settling tank, the treated emulsion flows in and out simultaneously, and the disturbance effect generated by the flow can have great influence on the dehydration process.
(2) The influence of the feed position cannot be evaluated: due to the existence of water washing and disturbance, the difference of liquid inlet positions can obviously influence the dehydration effect. The method can not realize the evaluation of the influence of the operation conditions such as water washing, disturbance and the like on the demulsification and dehydration effects.
(3) The length-diameter ratio of the cuvette is not consistent with the industrial demulsification dehydration process: the length-diameter ratio of the demulsification dehydration facility directly influences the path length of crude oil floating and water drop descending in the oil-water separation process, and directly influences the oil-water separation effect and the water content gradient of a crude oil layer. In the above method, experimental results similar or comparable to those of industrial production cannot be obtained.
(4) The mixing method of the emulsion and the demulsifier is different from the mixing method in the industrial demulsification and dehydration process: in industrial production, the demulsifier is injected into a production system and then flows to mix with the emulsion. The uniformity of mixing directly affects the performance of the efficiency of the emulsion breaker. The method specifies a fixed mixing mode, and has great difference from the actual production.
(5) The operation pressure is not in accordance with the pressure environment of the industrial demulsification dehydration process: under the normal pressure state, along with the increase of the dehydration temperature, the low carbon number hydrocarbons in the crude oil volatilize; the state of dispersed water droplets also largely changes after exceeding 95 ℃. The above method cannot avoid the above problems.
That is to say, the method has low coincidence with the actual working conditions of industrial production, and only can compare the difference of demulsification and dehydration performances under different working conditions, wherein the different working conditions comprise temperature, the content of the demulsifier and the type of the demulsifier, but the actual demulsification and dehydration parameters in the industrial production cannot be obtained exactly.
The embodiment of the application provides an oil field demulsification dehydration performance evaluation system, including: the device comprises a produced liquid preparation unit, a demulsifier injection unit, a demulsification and dehydration performance evaluation unit, an experimental medium recovery unit and an experimental control unit, wherein the produced liquid preparation unit and the demulsifier injection unit are communicated with the demulsification and dehydration performance evaluation unit through a liquid supply pipeline, the experimental medium recovery unit is communicated with the demulsification and dehydration performance evaluation unit through a medium recovery pipeline, the produced liquid preparation unit is used for preparing an emulsion of crude oil and water and supplying the emulsion to the demulsification and dehydration performance evaluation unit, the demulsifier injection unit is used for injecting a demulsifier into the emulsion, the experimental control unit is used for controlling the temperature and the pressure in the demulsification and dehydration process of the emulsion, and the demulsification and dehydration performance evaluation unit is used for acquiring the crude oil and the water quality information of different, and the experimental medium recovery unit is used for respectively recovering the removed crude oil and the removed sewage.
The embodiment of the application provides an oil field breakdown of emulsion dehydration performance evaluation system, through preparing the unit with the produced fluid, demulsifier injection unit and experimental medium recovery unit through the pipeline with breakdown of emulsion dehydration performance evaluation unit intercommunication to through experiment control unit control experiment environment and temperature, can realize under the temperature and the pressure that are close industrial production, realize evaluating the breakdown of emulsion dehydration performance under the developments, the true operating mode of simulation industrial production improves the reproducibility of experimental result in industrial production.
The technical scheme of the oil field demulsification and dehydration performance evaluation system in the embodiment of the application is exemplarily described below with reference to the accompanying drawings.
FIG. 2 is a structural diagram of an oil field demulsification and dehydration performance evaluation system in an embodiment of the present application. As shown in fig. 2, the oil field demulsification and dehydration performance evaluation system 1 includes a produced fluid preparation unit 200, a demulsifier injection unit 300, a demulsification and dehydration performance evaluation unit 100, an experimental medium recovery unit 400 and an experimental control unit 500. The produced liquid preparation unit 200 and the demulsifier injection unit 300 are communicated with the demulsification and dehydration performance evaluation unit 100 through a liquid supply pipeline 610, and the experimental medium recovery unit 400 is communicated with the demulsification and dehydration performance evaluation unit 100 through a medium recovery pipeline 620. The produced fluid preparation unit 200 is used to prepare an emulsion of crude oil and water, and supplies the emulsion breaking and dehydration performance evaluation unit 100. The demulsifier injection unit 300 is used for injecting demulsifiers into the liquid supply pipeline, the experiment control unit 400 is used for controlling the temperature and the pressure of the demulsification and dehydration process of the emulsion, the temperature and the pressure are set according to the actual industrial working conditions which need to be simulated, the produced liquid of different oil fields and the ground gathering and transportation treatment process are different, and the temperature and the pressure are also different. The demulsification and dehydration performance evaluation unit 100 is used for acquiring information of crude oil and water quality of different liquid level layers in the demulsification and dehydration process of the emulsion and generating the dehydrated crude oil and the dehydrated sewage. The experimental medium recovery unit 400 is used to recover the crude oil after stripping and the sewage after stripping, respectively.
The oil field demulsification and dehydration performance evaluation system provided by the embodiment of the application controls the temperature and the pressure of the whole emulsion demulsification and dehydration process through the experiment control unit, and obtains the crude oil and water quality information of different liquid level layers in the emulsion demulsification and dehydration process through the demulsification and dehydration performance evaluation unit, so that the demulsification and dehydration condition of the emulsion can be evaluated dynamically, the real working condition of industrial production is simulated, and the reproducibility of the experiment result in the industrial production is improved.
Fig. 3 is a structure diagram of a settling tank in an embodiment of the present application. In an exemplary embodiment, as shown in fig. 2 and 3, the demulsification and dehydration performance evaluation unit 100 comprises an upright settling tank 101, a plurality of liquid taking pipelines 102 arranged on the settling tank 101 and distributed along the axial direction of the settling tank 101, and liquid taking valves 103 arranged on the liquid taking pipelines 102, wherein the settling tank 101 is communicated with the produced liquid preparation unit 200 and the demulsifier injection unit 300 through a liquid supply pipeline 610, and is communicated with the experimental medium recovery unit 400 through a medium recovery pipeline 620. The setting is followed a plurality of liquid pipelines 102 that get that its axial direction distributes on the settling cask 101, gets liquid valve 103 through the break-make and can take a sample to different liquid level layers in the settling cask 101, accurately confirms the demulsification dehydration in-process that subsides, and the quality of water information of crude oil water gradient distribution and different horizons after taking off, and the quality of water information includes but not limited to the change situation of aquatic oil content and suspended solid content. The number of the liquid taking pipes can be 6, 8, 10 or 12, and the liquid taking pipes 102 are uniformly distributed along the axial direction of the settling tank 101. The more the liquid taking pipelines 102 are, the more detailed the obtained gradient distribution information of the water content of the crude oil after the dehydration and the water quality change information of different positions are, and the more accurate the sedimentation, demulsification and dehydration process can be evaluated. In this example, the height of the settling tank is 500 mm to 1500 mm, the diameter of the settling tank is 300 mm to 500 mm, and the distance between adjacent liquid extraction pipes is 50 mm to 150 mm, for example, the height of the settling tank is 700mm, the diameter of the settling tank is 432mm, and the distance between adjacent liquid extraction pipes is 75 mm.
In an exemplary embodiment, the demulsification and dehydration performance evaluation unit 100 further comprises a plurality of auxiliary liquid supply pipelines 104 arranged on the settling tank 101 and communicated with the liquid supply pipeline 610, and liquid supply valves 105 arranged on the auxiliary liquid supply pipelines 104, wherein the positions where the settling tank 101 is communicated with the plurality of auxiliary liquid supply pipelines 104 are sequentially arranged along the axial direction of the settling tank 101. The number of the liquid supply auxiliary pipelines is set according to simulation requirements and can comprise 3, 4, 5 or 7. The influence of disturbance generated by different liquid inlet positions on the emulsion breaking and dehydrating effects of the emulsion can be evaluated by arranging a plurality of auxiliary liquid supply pipelines. The interval of the auxiliary liquid supply pipelines is set according to the height of the tank body of the settling tank and the actual liquid supply position under the industrial working condition. In an example, at least one of the communication positions of the settling tank 101 and the plurality of auxiliary liquid supply pipes 104 corresponds to the position of the sewage layer after dehydration, that is, at least one of the communication positions of the settling tank 101 and the plurality of auxiliary liquid supply pipes 104 is located at the lower part of the height of the settling tank 101, and the lower part of the height of the tank can be a position which is less than one half or less than one third of the height of the tank, so as to evaluate the influence of water washing on the emulsion breaking and dehydration effect of the emulsion. And the sewage layer after dewatering is arranged below the interface between the original oil layer and the sewage layer.
In an exemplary embodiment, as shown in fig. 2, the demulsification and dehydration performance evaluation unit 110 further includes a plurality of liquid distributors 106 disposed in the settling tank 101 and arranged along the axial direction of the settling tank 101, wherein the plurality of liquid distributors 106 are in one-to-one communication with the plurality of auxiliary liquid supply pipes 104. The liquid distributor 106 enables the emulsion to be uniformly distributed in the settling tank 101, the actual industrial working condition is met, and the reliability of the emulsion breaking and dewatering process evaluation of the emulsion is improved.
In an exemplary embodiment, as shown in fig. 2, the medium recovery pipeline 620 includes a crude oil recovery pipeline 621 and a sewage recovery pipeline 622, the demulsification-dehydration performance evaluation unit 100 further includes a plurality of crude oil recovery sub-pipelines 107 and crude oil recovery valves 108 disposed on the crude oil recovery sub-pipelines 107, a plurality of secondary sewage recovery pipelines 109 and a sewage recovery valve 110 arranged on the secondary sewage recovery pipelines, a plurality of secondary crude oil recovery pipelines 107 are communicated with the settling tank 101 and the crude oil recovery pipeline 621, a plurality of secondary sewage recovery pipelines 109 are communicated with the settling tank 101 and the sewage recovery pipeline 622, the communication positions of the settling tank 101, the plurality of secondary crude oil recovery pipelines 107 and the plurality of secondary sewage recovery pipelines 109 are distributed along the axial direction of the settling tank 101, and the communication position of the settling tank 101 and the plurality of crude oil recovery sub-pipelines 107 is located above the communication position of the settling tank 101 and the plurality of sewage recovery sub-pipelines 109. One or more of the plurality of after-removal crude oil auxiliary pipelines and one or more of the plurality of after-removal sewage auxiliary pipelines are opened or closed by controlling the on-off of the crude oil recovery valve 108 and the sewage recovery valve 110, and the positions of the outlets of the different after-removal crude oil and sewage can be determined by arranging the plurality of crude oil recovery auxiliary pipelines and the sewage recovery auxiliary pipelines, so that the influence on the emulsion breaking and dehydrating effects of the emulsion is realized. In one example, the communication position of the settling tank and the crude oil recovery secondary pipeline and the communication position of the settling tank and the liquid supply secondary pipeline are arranged along the radial direction of the settling tank.
In an exemplary embodiment, as shown in fig. 2, the demulsification and dehydration performance evaluation unit 100 further includes a first liquid discharge pipe 111 disposed at the bottom of the emulsion demulsification settling tank 101, a first gas discharge valve 113 disposed on the first liquid discharge pipe 111, a first gas vent pipe 112 disposed at the top of the emulsion demulsification settling tank 101, and a first gas vent valve 114 disposed on the first gas vent pipe 112, wherein the first liquid discharge pipe 111, the first liquid discharge valve 113, the first gas vent pipe 112, and the first gas vent valve 114 cooperate to discharge the liquid medium in the settling tank 101.
In an exemplary embodiment, as shown in fig. 2, the produced liquid preparation unit 200 includes a crude oil supply unit 210, a produced water supply unit 220, and a crude oil and produced water mixing conduit 230, the crude oil supply unit 210 and the produced water supply unit 220 communicating with a liquid supply conduit 610 through the crude oil and produced water mixing conduit 230.
In an exemplary embodiment, the production fluid preparation unit 200 further includes a mixer 240, the mixer 240 being disposed on the crude oil and produced water mixing conduit 240. The mixer 240 may employ a pipe mixer, and the mixer 240 may mix the crude oil and the produced water uniformly, and the crude oil and the produced water passing through the mixer 240 form an emulsion.
In an exemplary embodiment, as shown in fig. 2, the crude oil supply unit 210 includes a crude oil storage tank 211, a crude oil pipe 212 communicating the crude oil storage tank 211 and the crude oil and produced water mixing pipe 230, and a first metering pump 213 disposed on the crude oil pipe 212. The first metering pump 213 is used to pump a specified amount of crude oil into the crude oil and produced water mixing pipeline. In one example, the crude oil supply unit 210 further includes a crude oil valve 214, the crude oil valve 214 being disposed in the crude oil pipe 212 between the crude oil storage tank 211 and the first metering pump 213. The crude valve 214 controls the opening and closing of the crude pipe 212.
In an exemplary embodiment, as shown in fig. 2, the produced water supply unit 220 includes a produced water storage tank 221, a produced water pipe 222 communicating the produced water storage tank 221 and the crude oil and produced water mixing pipe, and a second metering pump 223 disposed on the produced water pipe 222. The second metering pump 223 is used to pump a specified amount of produced water into the crude oil and produced water mixing pipe. The produced water may be clear water. In one example, the produced water supply unit 220 also includes a produced water valve 224 disposed on the produced water conduit 222 and between the produced water storage tank 221 and the second metering pump 223. The produced water valve 224 controls the make and break of the produced water conduit 222.
In an exemplary embodiment, as shown in FIG. 2, the emulsion breaker injection unit 300 includes an emulsion breaker dispense tank 310, an emulsion breaker conduit 320 communicating the emulsion breaker dispense tank 310 and a liquid supply conduit 610, and a third metering pump 330 disposed on the emulsion breaker conduit. The third metering pump 330 is used to pump a specified amount of demulsifier into the liquid supply line 610. The produced water may be clear water. The demulsifier preparation tank can be internally provided with a stirring mechanism, and the stirring can comprise a stirring rod, a stirring blade arranged on the stirring rod and a driving motor for driving the stirring rod to rotate. In one example, the demulsifier injection unit 300 further includes a demulsifier valve 340 disposed on the demulsifier conduit 320 and between the demulsifier formulation tank 310 and the third metering pump 330 to control the opening and closing of the demulsifier conduit 320.
In an exemplary embodiment, as shown in FIG. 2, the test media recovery unit 400 includes a crude recovery tank 410 in communication with a crude recovery conduit 621 and a wastewater recovery tank 420 in communication with a wastewater recovery conduit 622.
In an exemplary embodiment, as shown in fig. 2, the experimental media recovery unit 400 further includes a second drain line 411 disposed at the bottom of the crude recovery tank 410, a second drain valve 412 disposed on the second drain line 411, a second vent line 413 disposed at the top of the stripped crude 410, and a second vent valve 414 disposed on the second vent line 413. The experimental medium recovery unit 400 further includes a third liquid drainage pipe 421 disposed at the bottom of the wastewater recovery tank 420, a third liquid drainage valve 422 disposed on the third liquid drainage pipe 421, a third gas drainage pipe 423 disposed at the top of the wastewater recovery tank 420, and a third gas ventilation valve 424 disposed on the third gas ventilation pipe 423. The second vent valve 414 and the third vent valve 424 can ensure that the crude oil recovery tank 410 and the wastewater recovery tank 420 are in communication with the atmosphere when receiving or discharging the post-dehydrated crude oil and the post-dehydrated wastewater.
In an exemplary embodiment, the experiment control unit comprises a pressure control unit and a temperature control unit, wherein the pressure control unit is used for controlling the demulsification and dehydration experiment process to be at pressure, and the temperature control unit is used for controlling the demulsification and dehydration experiment process to be at temperature. The pressure control unit comprises a gas storage tank, a gas supply pipeline and a pressure control valve, the gas storage tank is communicated with the settling tank, the crude oil recovery tank and the sewage recovery tank through the gas supply pipeline, and the pressure control valve is used for controlling the on-off of the gas supply pipeline so as to enable the settling tank, the crude oil recovery tank and the sewage recovery tank to be self-maintained at pressure. As shown in fig. 2, the gas storage tanks include a first gas storage tank 501 for supplying gas to the settling tank 101, a second gas storage tank 502 for supplying gas to the crude oil recovery tank 410, and a third gas storage tank 503 for supplying gas to the sewage recovery tank 420, and the gas supply lines include a first gas supply line 504 for communicating the first gas storage tank 501 with the settling tank 101, a second gas supply line 505 for communicating the second gas storage tank 502 with the crude oil recovery tank 410, and a third gas supply line 506 for communicating the third gas storage tank 503 with the sewage recovery tank 420. The control valves include a first pressure control valve 507 provided to the first gas supply duct 504, a second pressure control valve 508 provided to the second gas supply duct 505, and a third pressure control valve 509 provided to the third gas supply duct 506. In one example, the gas within the gas storage tank may be nitrogen or other inert gas.
In an exemplary embodiment, the temperature control unit comprises a first temperature control unit for controlling the temperature of the produced fluid preparation unit, a second temperature control unit for controlling the temperature of the demulsifier injection unit, a third temperature control unit for controlling the demulsification and dehydration performance evaluation unit, and a fourth temperature control unit for controlling the temperature of the experimental medium recovery unit. In one example, the first temperature control unit, the second temperature control unit, the third temperature control unit and the fourth temperature control unit each include a heating jacket disposed outside the tank body and a heat insulating jacket disposed at a periphery of the heating jacket.
In an exemplary embodiment, the experiment control unit further comprises a detection unit and a process control unit, the detection unit is connected with the process control unit, and the process control unit is connected with the produced fluid preparation unit, the demulsifier injection unit, the demulsification and dehydration performance evaluation unit and the experiment medium recovery unit. As shown in fig. 2, the detection unit includes a first liquid level meter 510 disposed in the settling tank 101, and the process control unit is configured to control the liquid level in the settling tank according to the liquid level information fed back by the first liquid level meter 510, and evaluate the influence of the ratio of the major axis of the tank on demulsification and dehydration. The first liquid discharge valve, the second liquid discharge valve and the third liquid discharge valve are collectively called as liquid discharge valves, the first vent valve, the second vent valve and the third vent valve can be collectively called as vent valves, the liquid supply valve, the crude oil recovery valve, the sewage recovery valve, the crude oil valve, the produced water valve, the demulsifier valve, the liquid discharge valves and the vent valves can be electromagnetic valves, the process control unit can be electrically connected with the first metering pump, the second metering pump, the third metering pump, the liquid supply valve, the crude oil recovery valve, the sewage recovery valve, the crude oil valve, the produced water valve, the demulsifier valve, the liquid discharge valves and the vent valves, and the process control unit controls the start and stop of the first metering pump, the second metering pump and the third metering pump to control the on-off of the valves. The process control unit feeds back liquid level information according to the first liquid level meter, controls the liquid level in the settling tank by controlling the first metering pump, the second metering pump, the third metering pump and the related valves, and evaluates the influence of demulsification and dehydration on the major axis of the tank body. In one example, as shown in FIG. 2, the detection unit further includes a second level gauge 511 disposed within the crude recovery tank 410 and a third level gauge 512 disposed within the post-dewatering sewage recovery storage tank 420. The process control unit can control the second liquid drainage pipeline or the third liquid drainage pipeline to drain liquid when the crude oil recovery tank and the sewage recovery tank reach the set liquid levels by controlling the second liquid drainage valve, the third liquid drainage valve, the second vent valve and the third vent valve according to the liquid level information fed back by the second liquid level meter 511 and the third liquid level meter 512.
The technical scheme of the application is exemplarily illustrated by the working principle of the oil field demulsification and dehydration performance evaluation system.
The temperature control unit respectively controls the settling tank 101, the crude oil storage tank 211, the produced water storage tank 221, the demulsifier storage tank 310, the crude oil recovery tank 410 and the sewage recovery tank 420 to be at experimental temperatures, and the pressure control unit controls the settling tank 101, the crude oil recovery tank 410 and the sewage recovery tank 420 to be at experimental pressures, so that the dispersed water droplet form and the low-carbon-number hydrocarbon volatilization condition are maintained under industrial working conditions. According to the condition of the produced fluid to be evaluated, a certain amount of crude oil and produced water are pumped in by controlling the first metering pump 213 and the second metering pump 223, the crude oil and the produced water are mixed in the mixer 240 to form an emulsion, and then the emulsion is pumped into the liquid supply pipeline 610, wherein the form of the emulsion comprises one or more of water-in-oil, oil-in-water-in-oil-in-water and water-in-oil-in-water. The demulsifier preparation tank 310 is used for preparing demulsifiers with designed concentration and types, the demulsifiers are pumped into the liquid supply pipeline 610 through the third metering pump 330, emulsions and the demulsifiers are mixed in the liquid supply pipeline 610 and the liquid supply auxiliary pipeline 104 and are uniformly distributed in the settling tank 101 through the liquid distributor 106, the emulsions are demulsified and dehydrated in the settling tank 101 to form dehydrated crude oil and dehydrated sewage, the dehydrated crude oil flows into the crude oil recovery tank 410 through the crude oil recovery auxiliary pipeline 107 and the crude oil recovery pipeline 621, and the dehydrated sewage flows into the sewage recovery tank 420 through the sewage recovery auxiliary pipeline 109 and the sewage recovery pipeline 622. In the emulsion breaking and dehydrating process, samples of different liquid level layers can be collected through a liquid taking pipeline 102 arranged on a settling tank 101, and the water content gradient distribution of the dehydrated crude oil and the water quality change conditions of different layers are obtained; the on-off of the liquid supply valve 105 can be selectively controlled through the fixedly communicated crude oil recovery auxiliary pipeline 107 and the sewage recovery auxiliary pipeline 109, the communicated liquid supply auxiliary pipeline 104 is selected, samples of different liquid level layers in the settling tank 101 are obtained, the influence of disturbance generated by different liquid inlet positions on the emulsion breaking and dehydrating effect of the emulsion is evaluated, in the process, the liquid supply auxiliary pipeline 104 of the sewage layer after the emulsion breaking and dehydrating effect is also selectively on-off, and the influence of water washing on the emulsion breaking and dehydrating effect of the emulsion is evaluated; the on-off of the crude oil recovery valve 108 and the sewage recovery valve 110 can be selectively controlled by fixing the position of the liquid supply auxiliary pipeline 104, the crude oil recovery auxiliary pipeline 107 and the sewage recovery auxiliary pipeline 109 are selectively communicated, samples of different liquid level layers of the settling tank 101 are obtained, and the influence of different crude oil after stripping and sewage outlet positions on the emulsion breaking and dehydrating effect of the emulsion is evaluated; detect the settling cask 101 liquid level through first level gauge 510, the process control unit is according to the liquid level information of first level gauge 510 feedback, through controlling first measuring pump 213, second measuring pump 223, third measuring pump 330, supply valve 105, crude oil recovery valve 108 and sewage recovery valve 110, makes settling cask 101 keep at the liquid level height of settlement, acquires the different liquid level layer samples of settling cask 101, and the influence of breakdown of emulsion dehydration is compared to the evaluation jar body length and diameter.
By illustrating the working principle of the oil field demulsification and dehydration performance evaluation system, it can be seen that:
1. the emulsion and the demulsifier are mixed in the liquid supply pipeline and the liquid supply auxiliary pipeline and are uniformly distributed in the settling tank through the liquid distributor, the mixing method of the emulsion and the demulsifier is consistent with the mixing method in the industrial demulsification and dehydration process, and the reproducibility of the experimental result is improved.
2. In the emulsion breaking and dehydrating process, samples of different liquid level layers under dynamic conditions can be collected through a liquid taking pipeline arranged on a settling tank, the water content gradient distribution of the dehydrated crude oil and the water quality change conditions of different layers are obtained, and the evaluation result is more accurate.
3. The influence of disturbance generated by different liquid inlet positions on the emulsion breaking and dehydrating effects of the emulsion can be obtained by fixedly communicating the crude oil recovery auxiliary pipeline and the sewage recovery auxiliary pipeline and selecting the communicated liquid supply auxiliary pipeline; the position of the liquid supply auxiliary pipeline is fixed, the crude oil recovery auxiliary pipeline and the sewage recovery auxiliary pipeline are selectively communicated, so that the influence of different positions of the crude oil after dehydration and the sewage after dehydration on the emulsion breaking and dehydrating effect can be obtained, and the production practice can be guided.
4. By controlling the liquid level height of the settling tank, the influence of the length-diameter ratio of the tank body on the emulsion breaking and dewatering effect of the emulsion is obtained
The oil field demulsification and dehydration performance evaluation system provided by the embodiment of the application truly simulates the working conditions of industrial production, overcomes the defect that a static demulsification and dehydration performance evaluation method cannot simulate the influence of factors such as the flow state and the pressure on the demulsification and dehydration effects in the industrial production, improves the reproducibility of experimental results in the industrial production, and provides more accurate and reliable data for design and production management decisions.
The embodiment of the application also provides an oil field demulsification and dehydration performance evaluation method, and the oil field demulsification and dehydration performance evaluation system adopting the embodiment comprises the following steps:
preparing an emulsion, and feeding the emulsion into a demulsification and dehydration performance evaluation unit through a liquid supply pipeline;
injecting a demulsifier into the liquid supply pipeline;
crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained through a breaking and dehydrating performance evaluation unit, and the crude oil after being removed and the sewage after being removed are generated;
recovering crude oil and sewage.
In an exemplary embodiment, the crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained by the breaking and dehydrating performance evaluation unit, which comprises the following steps:
the crude oil recovery auxiliary pipeline and the sewage recovery auxiliary pipeline are fixedly communicated, the liquid supply auxiliary pipeline is selectively communicated, and crude oil and water quality information of different liquid level layers at different liquid inlet positions is obtained.
In an exemplary embodiment, the crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained by the breaking and dehydrating performance evaluation unit, which comprises the following steps:
the position of the communicated liquid supply auxiliary pipeline is fixed, the crude oil recovery auxiliary pipeline and the sewage recovery auxiliary pipeline are selectively communicated, and crude oil and water quality information of different liquid level layers at different positions of the dehydrated crude oil and the dehydrated sewage outlet are obtained.
In the description of the present application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure ", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the structures referred to have a specific orientation, are configured and operated in a specific orientation, and thus, cannot be construed as limiting the present application.
In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and, for example, may be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
Claims (15)
1. An oil field demulsification dehydration performance evaluation system is characterized by comprising: the device comprises a produced liquid preparation unit, a demulsifier injection unit, a demulsification and dehydration performance evaluation unit, an experimental medium recovery unit and an experimental control unit, wherein the produced liquid preparation unit and the demulsifier injection unit are communicated with the demulsification and dehydration performance evaluation unit through a liquid supply pipeline, the experimental medium recovery unit is communicated with the demulsification and dehydration performance evaluation unit through a medium recovery pipeline, the produced liquid preparation unit is used for preparing crude oil and water emulsion and supplying the crude oil and water emulsion to the demulsification and dehydration performance evaluation unit, the demulsifier injection unit is used for injecting a demulsifier into the emulsion, the experimental control unit is used for controlling the temperature and the pressure in the demulsification and dehydration process of the emulsion, the demulsification and dehydration performance evaluation unit is used for obtaining the crude oil and water quality information of different liquid level layers in the demulsification and dehydration process of the emulsion and generating dehydrated crude oil and, the experimental medium recovery unit is used for respectively recovering the crude oil after the removal and the sewage after the removal.
2. The oil field demulsification dehydration performance evaluation system of claim 1, characterized in that: the demulsification dehydration performance evaluation unit comprises an upright settling tank, a plurality of liquid taking pipelines arranged on the settling tank and liquid taking valves arranged on the liquid taking pipelines, the settling tank is distributed along the axial direction of the settling tank with a plurality of communication positions of the liquid taking pipelines, the settling tank is communicated with the produced liquid preparation unit and the demulsifier injection unit through a liquid supply pipeline, and is communicated with the experiment medium recovery unit through the medium recovery pipeline.
3. The oil field demulsification dehydration performance evaluation system of claim 2, characterized in that: the demulsification and dehydration performance evaluation unit further comprises a plurality of auxiliary liquid supply pipelines which are arranged on the settling tank and communicated with the liquid supply pipeline, and liquid supply valves which are arranged on the auxiliary liquid supply pipelines, and the communication positions of the settling tank and the plurality of auxiliary liquid supply pipelines are sequentially arranged along the axial direction of the settling tank.
4. The oil field demulsification dehydration performance evaluation system of claim 3, characterized in that: at least one of the communication positions of the settling tank and the plurality of auxiliary liquid supply pipelines corresponds to the position of the sewage layer after dewatering.
5. The oil field demulsification dehydration performance evaluation system of claim 3, characterized in that: the demulsification and dehydration performance evaluation unit further comprises a plurality of liquid distributors arranged in the settling tank, and the liquid distributors and the liquid supply auxiliary pipelines are arranged in a one-to-one correspondence mode.
6. The oil field demulsification dehydration performance evaluation system of claim 2, characterized in that: the medium recovery pipeline comprises a crude oil recovery pipeline and a sewage recovery pipeline, the demulsification and dehydration performance evaluation unit further comprises a plurality of crude oil recovery auxiliary pipelines and crude oil recovery valves arranged on the crude oil recovery auxiliary pipelines, a plurality of auxiliary sewage recovery pipelines and a sewage recovery valve arranged on the auxiliary sewage recovery pipelines, the plurality of crude oil recovery secondary pipelines are communicated with the settling tank and the crude oil recovery pipeline, the plurality of sewage recovery secondary pipelines are communicated with the settling tank and the sewage recovery pipeline, the communication positions of the settling tank and the plurality of crude oil recovery secondary pipelines and the plurality of sewage recovery secondary pipelines are distributed along the axial direction of the settling tank, and the communication position of the settling tank and the plurality of crude oil recovery auxiliary pipelines is positioned above the communication position of the settling tank and the plurality of sewage recovery auxiliary pipelines.
7. The oil field demulsification and dehydration performance evaluation system of claim 2, wherein the experiment control unit comprises a temperature control unit for controlling the temperature of the produced fluid preparation unit, the demulsifier injection unit, the demulsification and dehydration performance evaluation unit and the experiment medium recovery unit, and a pressure control unit for controlling the pressure of the demulsification and dehydration performance evaluation unit and the experiment medium recovery unit.
8. The oil field demulsification and dehydration performance evaluation system according to claim 7, wherein the experiment control unit further comprises a process control unit and a detection unit, the detection unit comprises a first liquid level meter arranged in the settling tank, the process control unit is connected with the produced fluid preparation unit, the demulsifier injection unit, the demulsification and dehydration performance evaluation unit and the experiment medium recovery unit, and the process control unit is used for controlling the liquid level in the settling tank according to the feedback liquid level information of the first liquid level meter.
9. The oil field demulsification dehydration performance evaluation system as claimed in any one of claims 1-8, characterized in that: the produced liquid preparation unit comprises a crude oil supply unit, a produced water supply unit, a crude oil and produced water mixing pipeline and a mixer, wherein the crude oil supply unit and the produced water supply unit are communicated with the liquid supply pipeline through the crude oil and produced water mixing pipeline, and the mixer is arranged on the crude oil and produced water mixing pipeline.
10. The oil field demulsification dehydration performance evaluation system of claim 9, characterized in that: the crude oil supply unit comprises a crude oil storage tank, a crude oil pipeline for communicating the crude oil storage tank with the crude oil and produced water mixing pipeline, and a first metering pump arranged on the crude oil pipeline; the produced water supply unit comprises a produced water storage tank, a produced water pipeline communicated with the produced water storage tank and the crude oil and produced water mixing pipeline, and a second metering pump arranged on the produced water pipeline.
11. The oil field demulsification dehydration performance evaluation system as claimed in any one of claims 1-8, characterized in that: the demulsifier injection unit comprises a demulsifier preparation tank, a demulsifier pipeline communicated with the demulsifier preparation tank and the liquid supply pipeline, and a third metering pump arranged on the demulsifier pipeline.
12. The oil field demulsification dehydration performance evaluation system of claim 6, characterized in that: the experimental medium recovery unit comprises a crude oil recovery tank and a sewage recovery tank, the crude oil recovery tank is communicated with a crude oil recovery pipeline, and the sewage recovery tank is communicated with a sewage recovery pipeline.
13. An oil field demulsification and dehydration performance evaluation method adopting the oil field demulsification and dehydration performance evaluation system of any one of claims 1 to 12, comprising:
preparing an emulsion, and feeding the emulsion into a demulsification and dehydration performance evaluation unit through a liquid supply pipeline;
injecting a demulsifier into the liquid supply pipeline;
crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained through a breaking and dehydrating performance evaluation unit, and the crude oil after being removed and the sewage after being removed are generated;
recovering crude oil and sewage.
14. The method for evaluating the demulsification and dehydration performance of the oil field according to claim 13, wherein the method comprises the following steps: crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained through a breaking and dehydrating performance evaluation unit, and the method comprises the following steps:
the crude oil recovery auxiliary pipeline and the sewage recovery auxiliary pipeline are fixedly communicated, the liquid supply auxiliary pipeline is selectively communicated, and crude oil and water quality information of different liquid level layers at different liquid inlet positions is obtained.
15. The method for evaluating the demulsification and dehydration performance of the oil field according to claim 13, wherein the method comprises the following steps: crude oil and water quality information of different liquid level layers in the emulsion breaking and dehydrating process is obtained through a breaking and dehydrating performance evaluation unit, and the method comprises the following steps:
the position of the communicated liquid supply auxiliary pipeline is fixed, the crude oil recovery auxiliary pipeline and the sewage recovery auxiliary pipeline are selectively communicated, and crude oil and water quality information of different liquid level layers at different positions of the dehydrated crude oil and the dehydrated sewage outlet are obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115753282A (en) * | 2022-11-21 | 2023-03-07 | 中海石油(中国)有限公司 | Simulation method of oilfield produced fluid |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760232A (en) * | 2010-01-06 | 2010-06-30 | 中国石油化工股份有限公司 | Dynamic electric desalting and dewatering test device and electric desalting and dewatering system |
| CN102086405A (en) * | 2009-12-08 | 2011-06-08 | 江苏三星化工有限公司 | Crude oil electro-desalting dynamic test simulation system device |
| CN102159676A (en) * | 2008-07-15 | 2011-08-17 | 通用电气公司 | Dynamic desalter simulator |
| CN202358977U (en) * | 2011-09-06 | 2012-08-01 | 中国石油化工股份有限公司 | Device for demulsifying and un-oiling produced water by binary compound flooding |
| CN102732296A (en) * | 2012-07-26 | 2012-10-17 | 中国海洋石油总公司 | High water-content crude oil electrostatic dehydration device |
| CN204417423U (en) * | 2015-01-28 | 2015-06-24 | 北京迪威尔石油天然气技术开发有限公司 | A kind of crude oil electric desalting dewatering testing apparatus |
| CN104807981A (en) * | 2015-04-15 | 2015-07-29 | 北京石油化工学院 | Device and method for evaluating dynamic demulsification and dehydration characteristics of crude oil emulsion |
| CN108732333A (en) * | 2018-05-31 | 2018-11-02 | 西安长庆科技工程有限责任公司 | A kind of water-bearing survey device and process for oily water separating equipment |
| WO2019099400A1 (en) * | 2017-11-14 | 2019-05-23 | Dow Global Technologies Llc | Method of using high molecular weight aromatic polyol diesters as demulsifiers for crude oil treatment |
-
2020
- 2020-08-06 CN CN202010782359.4A patent/CN112051390B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159676A (en) * | 2008-07-15 | 2011-08-17 | 通用电气公司 | Dynamic desalter simulator |
| CN102086405A (en) * | 2009-12-08 | 2011-06-08 | 江苏三星化工有限公司 | Crude oil electro-desalting dynamic test simulation system device |
| CN101760232A (en) * | 2010-01-06 | 2010-06-30 | 中国石油化工股份有限公司 | Dynamic electric desalting and dewatering test device and electric desalting and dewatering system |
| CN202358977U (en) * | 2011-09-06 | 2012-08-01 | 中国石油化工股份有限公司 | Device for demulsifying and un-oiling produced water by binary compound flooding |
| CN102732296A (en) * | 2012-07-26 | 2012-10-17 | 中国海洋石油总公司 | High water-content crude oil electrostatic dehydration device |
| CN204417423U (en) * | 2015-01-28 | 2015-06-24 | 北京迪威尔石油天然气技术开发有限公司 | A kind of crude oil electric desalting dewatering testing apparatus |
| CN104807981A (en) * | 2015-04-15 | 2015-07-29 | 北京石油化工学院 | Device and method for evaluating dynamic demulsification and dehydration characteristics of crude oil emulsion |
| WO2019099400A1 (en) * | 2017-11-14 | 2019-05-23 | Dow Global Technologies Llc | Method of using high molecular weight aromatic polyol diesters as demulsifiers for crude oil treatment |
| CN108732333A (en) * | 2018-05-31 | 2018-11-02 | 西安长庆科技工程有限责任公司 | A kind of water-bearing survey device and process for oily water separating equipment |
Non-Patent Citations (5)
| Title |
|---|
| 吴世学 等: "《采油厂全面质量管理》", 30 September 1992, 石油工业出版社 * |
| 张淇铭: "喇嘛甸油田外挂水箱式污水沉降罐出水工艺探讨", 《化工管理》 * |
| 王涛华: ""立式沉降罐内构件结构仿真优化研究"", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技I辑》 * |
| 蔺权权等: "原油沉降罐在线改造中油水界位测量仪表的选型探讨", 《石油化工自动化》 * |
| 赵文兰: "电容液位计在原油脱水沉降罐油水界面上的应用", 《油气田地面工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115753282A (en) * | 2022-11-21 | 2023-03-07 | 中海石油(中国)有限公司 | Simulation method of oilfield produced fluid |
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