CN202954003U - Treatment equipment for compound flooding oil extraction liquid of offshore oilfield - Google Patents

Treatment equipment for compound flooding oil extraction liquid of offshore oilfield Download PDF

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Publication number
CN202954003U
CN202954003U CN 201220665161 CN201220665161U CN202954003U CN 202954003 U CN202954003 U CN 202954003U CN 201220665161 CN201220665161 CN 201220665161 CN 201220665161 U CN201220665161 U CN 201220665161U CN 202954003 U CN202954003 U CN 202954003U
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crude oil
produced liquid
combination flooding
oil produced
extraction liquid
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王增林
徐心茹
李振泉
杨敬一
宋新旺
曹绪龙
祝仰文
张继超
马宝东
元福卿
李彬
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East China University of Science and Technology
Sinopec Shengli Geological Scientific Reserch Institute
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East China University of Science and Technology
Sinopec Shengli Geological Scientific Reserch Institute
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Abstract

The utility model discloses treatment equipment for compound flooding oil extraction liquid of an offshore oilfield. The equipment comprises a heater, an ultrasonic treatment device, a sedimentation device, and an electric dehydration device, wherein the heater is connected to a production well; the ultrasonic treatment device contains the heated compound flooding oil extraction liquid, and carries out ultrasonic treatment on the compound flooding oil extraction liquid; the sedimentation device is connected to the ultrasonic treatment device, contains the compound flooding oil extraction liquid after ultrasonic treatment, carries out heat sedimentation on the compound flooding oil extraction liquid to dewater, and separates out the oil; and the electric dehydration device is connected to the sedimentation device, contains the compound flooding oil extraction liquid after sedimentation treatment, and carries out electric field treatment on the compound flooding oil extraction liquid to further dewater. The treatment equipment disclosed by the utility model can be achieved by a compact design scheme, is suitable for application of an offshore platform with a narrow space, and can carry out efficient and reliable treatment on binary compound flooding oil extraction liquid within a short period of time.

Description

The treatment facility that is used for the combination flooding crude oil Produced Liquid of offshore oilfield
Technical field
The utility model relates to Oil extraction, particularly, relates to a kind for the treatment of facility of the crude oil of the combination flooding for offshore oilfield Produced Liquid, more specifically, relates to a kind for the treatment of unit that utilizes ultrasonic wave and electric field-enhanced heavy crude Produced Liquid.
Background technology
Along with scientific and technological development, the seabed crude oil production becomes the important means that meets crude oil demand and guarantee national economy sustainable development.Due to condition restriction, offshore platform to the processing requirements of crude oil Produced Liquid, be quick, efficient, energy-conservation and equipment volume unsuitable excessive etc.Therefore, significant to the research and development of the treatment facility of offshore oilfield crude oil Produced Liquid and method.
In addition, along with Gong the utilization of conventional oil reduces day by day, heavy crude is just becoming the mankind's important petroleum resources.Along with Oil extraction develops to heaviness or in poor quality gradually, the variation of oil property makes the exploitation difficulty increase, thereby has developed various strengthening displacement of reservoir oil measures in recent years.Recently a kind of technology of reservoir sweep of exploitation is " binary combination flooding " at present, in injected water, adds polymkeric substance and tensio-active agent, utilizes the synergy of polymkeric substance and tensio-active agent to increase substantially oil recovery factor.Yet, along with the Application and Development of polymkeric substance and tensio-active agent binary combination flooding new technology, the character of oil field mining liquid is more complicated, oil-water emulsion is more serious.Therefore, further difficult to the processing of crude oil combination flooding produced liquid.
When the technology by binary combination flooding is applied to offshore oilfield, due to the various condition restriction of offshore platform, the processing of combination flooding crude oil Produced Liquid is just become to more thorny.Also do not develop up to now the demand that satisfactory equipment and method meet the processing aspect of offshore oilfield combination flooding produced liquid, more can not be advantageously applied to treatment facility and the method for " binary combination flooding " crude oil Produced Liquid of offshore oilfield.
In a word, in the Oil extraction field, particularly at sea the oilfield exploitation aspect is needed a kind of equipment and the method that can process rapidly the crude oil Produced Liquid badly.
Summary of the invention
Main purpose of the present utility model is, a kind for the treatment of facility of the crude oil of the combination flooding for offshore oilfield Produced Liquid is provided, and it can carry out efficiently, process reliably binary combination flooding crude oil Produced Liquid at short notice with compact design.
For achieving the above object, the utility model provides a kind for the treatment of facility of the crude oil of the combination flooding for offshore oilfield Produced Liquid, described combination flooding crude oil Produced Liquid refers to the crude oil Produced Liquid of gathering by injecting the binary composite oil displacement agent be comprised of polymkeric substance and tensio-active agent, and described equipment comprises: the well heater that is connected to recovery well; Ultrasonic treatment unit, described ultrasonic treatment unit is received the combination flooding crude oil Produced Liquid heated, and it is carried out to ultrasonication; Be connected to the sedimentation device of ultrasonic treatment unit, it receives the combination flooding crude oil Produced Liquid after ultrasonication, and makes combination flooding crude oil Produced Liquid heat sink falling and dewatering therein, and separates fuel-displaced; And the apparatus for electrodewatering that is connected to described sedimentation device, it receives the combination flooding crude oil Produced Liquid after sedimentation is processed, and combination flooding crude oil Produced Liquid is carried out to electric field treatment and dehydration further.
Preferably, also comprise: the emulsion splitter feedway, described emulsion splitter feedway is supplied with emulsion splitter to the combination flooding crude oil Produced Liquid of being crossed by described heater heats.
Preferably, described ultrasonic treatment unit comprises: ultrasonic generator; Be connected to the ultrasonic transducer of described ultrasonic generator; Be connected to the vibration-sensing rod of described ultrasonic transducer by joint flange; And dewatering container.
The utility model also relates to a kind for the treatment of process of the crude oil of the combination flooding for offshore oilfield Produced Liquid, described combination flooding crude oil Produced Liquid refers to the crude oil Produced Liquid of gathering by injecting the binary composite oil displacement agent be comprised of polymkeric substance and tensio-active agent, and described method comprises the steps:
A) make to arrive certain temperature from the combination flooding crude oil Produced Liquid of recovery well through heater heats;
B) add emulsion splitter by the emulsion splitter feedway to the combination flooding crude oil Produced Liquid heated;
C) combination flooding raw material Produced Liquid is entered in ultrasonic treatment unit;
D) regulate ultrasonic power, make combination flooding crude oil Produced Liquid stand ultrasonication in ultrasonic treatment unit;
E) make the combination flooding crude oil Produced Liquid after ultrasonication enter sedimentation device, carry out therein heat sinkly falling to remove water, and then isolate the oil on upper strata; And
F) make to enter apparatus for electrodewatering from the combination flooding crude oil Produced Liquid of sedimentation device, stand therein to obtain the crude oil that water content is qualified after electric field treatment and sedimentation, and qualified crude oil is discharged from the top of apparatus for electrodewatering.
Preferably, from the bottom of described sedimentation device and apparatus for electrodewatering, discharge oily(waste)water, these oily(waste)waters are sent to waste disposal plant after merging to be processed.
Preferably, described emulsion splitter is by by four component copolymerizations, the first component is acrylate, second component is selected from acrylamide, methyl acrylamide, N-sec.-propyl acrylamide, N-hydroxyethyl acrylamide, N, N-DMAA, N, a kind of in N-diethyl acrylamide, the 3rd component is selected from a kind of in dimethyl diallyl ammonium chloride, diethyl diallyl ammonium chloride, and the 4th component is the 2-acrylamide-2-methyl propane sulfonic.
Preferably, described emulsion splitter is by acrylate, acrylamide, the tetrapolymer that 2-acrylamide-2-methyl propane sulfonic and dimethyl diallyl ammonium chloride form.
Preferably, described acrylate is to pass through acrylic acid modified formation on the basis of polyoxyethylene oxypropylene single-butyl ether, and the general formula of described acrylate is:
Figure BDA00002530766400031
Wherein, R 1: the alkyl of 1~18 carbon
R 2: O or N atom
-C 2H 4O-is the ethoxy unit after the oxyethane open loop
-C 3H 6O-is the methyl ethoxy unit after the propylene oxide open loop
m=20~80
n=10~40
Preferably, described acrylate, acrylamide, 2-acrylamide-2-methyl propane sulfonic, dimethyl diallyl ammonium chloride are 1:3~10:1~7:0.5~7 by mole proportioning.
Preferably, described acrylate, acrylamide, 2-acrylamide-2-methyl propane sulfonic, dimethyl diallyl ammonium chloride are 1:7:3:1 by mole proportioning.
Adopt treatment facility and the method for the Produced Liquid of the crude oil for offshore oilfield of the present utility model, hyperacoustic effect makes the profit particle vibration aggravation in combination flooding crude oil Produced Liquid, produces bubble and hole, and elevates the temperature.Hyperacoustic these strengthening effects have significantly reduced treatment time and the emulsion splitter consumption of crude oil combination flooding produced liquid.
More advantageously, the utility model has also added " electricity (field) dehydration " on the basis of above-mentioned ul-trasonic irradiation.The treatment facility that this ultrasonic wave combines with electric field can shorten the treatment time greatly, and significantly promotes the dehydration rate of combination flooding crude oil Produced Liquid.
Moreover, the utility model also for this special application and development of offshore oilfield combination flooding crude oil Produced Liquid brand-new emulsion splitter.With traditional emulsion splitter, compare, this novel emulsion splitter is in the situation that using ultrasound ripple and electric field treatment can obtain ideal dehydration rate when significantly shortening the treatment time.
In a word, treatment facility and the method for the crude oil of the combination flooding for offshore oilfield Produced Liquid of the present utility model can realize with the design of relative compact, be applicable to very much the application of the offshore platform of narrow space, and can carry out efficiently, process reliably binary combination flooding crude oil Produced Liquid at short notice.
The accompanying drawing explanation
Fig. 1 is the schematic flow sheet according to the combination flooding crude oil Produced Liquid treatment facility of the utility model preferred embodiment; And
Fig. 2 shows the ultrasonic treatment unit adopted in the crude oil Produced Liquid treatment facility according to the utility model preferred embodiment.
Embodiment
As shown in Figure 1, total being indicated by label 10 according to the crude oil of the combination flooding for the offshore oilfield Produced Liquid treatment facility of the utility model preferred embodiment, it mainly comprises well heater 2, ultrasonic treatment unit 5, sedimentation device 6 and apparatus for electrodewatering 7.In addition, also comprise the emulsion splitter feedway formed by emulsion splitter tank 3 and emulsion splitter injection pump 4.
Well heater 2 is received and is come from the combination flooding crude oil Produced Liquid of recovery well 1, and is heated to suitable temperature.Here so-called " combination flooding crude oil Produced Liquid " refers to the crude oil Produced Liquid of gathering by injecting the binary composite oil displacement agent be comprised of polymkeric substance and tensio-active agent.The emulsion splitter feedway be comprised of emulsion splitter tank 3 and emulsion splitter injection pump 4 is by the combination flooding crude oil Produced Liquid after the emulsion splitter injection heating.Ultrasonic treatment unit 5 is connected to well heater 2 and emulsion splitter feedway, and this ultrasonic treatment unit 5 is received the combination flooding crude oil Produced Liquid after the heating of having added emulsion splitter, and combination flooding crude oil Produced Liquid is carried out to ultrasonication.Sedimentation device 6 is connected to ultrasonic treatment unit 5, and it receives the combination flooding crude oil Produced Liquid after ultrasonication, and makes combination flooding crude oil Produced Liquid heat sink falling and dewatering therein.Apparatus for electrodewatering 7 is connected to sedimentation device 6, and it receives the combination flooding crude oil Produced Liquid after sedimentation is processed, and combination flooding crude oil Produced Liquid is carried out to electric field treatment and dehydration further.
Fig. 2 shows the custom-designed ultrasonic treatment unit 5 adopted in the treatment facility of combination flooding crude oil Produced Liquid of the present utility model, and it mainly comprises: ultrasonic generator 51, ultrasonic transducer 52, vibration-sensing rod 53 and dewatering container 54.Ultrasonic transducer 52 is connected to ultrasonic generator 51, for converting ultrasonic energy to mechanical vibration.Vibration-sensing rod 53 is connected to ultrasonic transducer 52 by joint flange 56 and is arranged in supersonic dewatering container 54, for mechanical vibration being passed to the combination flooding crude oil Produced Liquid in the supersonic dewatering container.In addition, as shown in Figure 2, be provided with cooling water circulating device 55 on ultrasonic transducer 52.
In addition, for controlling the temperature of ultrasonic response, can the water circulation system (not shown) be set for the supersonic dewatering container.Have again, can be in outlet set temperature and the pressure monitoring device (not shown) of ultrasonic treatment unit, so that the temperature and pressure of the crude oil Produced Liquid that monitoring is flowed out.
In general ultrasonic wave and electric field have been applied to adopt the treatment process of the offshore oilfield combination flooding crude oil Produced Liquid of polymkeric substance and tensio-active agent binary composite oil displacement agent according to the processing to the crude oil Produced Liquid of the utility model preferred embodiment, this is a kind ofly can realize efficiently with compact device the brand-new technique of dehydrating of crude oil.
The application's applicant is studied equipment and the method for intensified by ultrasonic wave crude oil combination flooding, the basic experiment condition adopted is for example: water oil ratio 1:1, polymer concentration is 800mg/L, surfactant concentration is 400mg/L, cosurfactant concentration 400mg/L, emulsion splitter consumption 80mg/L, 60 ℃ of settling temperature.The working parameter of ultrasonication is for example selected scope as described below, that is, and and frequency 28 or 40KHz; Power 180W; Heating power 600W; Temperature range 0-99 ℃; The interval 1-99 minute of ultrasonic time.
Generally speaking, as shown in Figure 1, the mode that the utility model adopts ultrasonication, chemical agent (emulsion splitter) and this three of electric field treatment to combine is processed the crude oil Produced Liquid of offshore oilfield.One or both modes that also can choose are as required wherein processed.
The principle of work of ultrasonication is roughly as follows.Ultrasonic wave can produce mechanical vibration effect, cavatition and heat effect to medium.The mechanical vibration interaction energy vibrates the profit particle together with ultrasonic wave, for the different particle of size, its Relative Vibration speed is not identical yet, thereby has promoted little oil droplet to be agglomerated into larger oil droplet, at the effect float downward of profit density difference to the water upper strata, thereby realize oily water separation.Simultaneously, the mechanical vibration effect can make the naturally occurring emulsifying agents such as colloid, bituminous matter in the crude oil Produced Liquid be uniformly dispersed, increase its solubleness in emulsion, the particle at water-oil interface place is under the effect of mechanical vibration, the particle of subparticipation film forming leaves water-oil interface, the strength decreased of interfacial film, the breakdown of emulsion process is accelerated.In the process of ultrasonic propagation, some zone in liquid can produce local interim negative pressure, produces bubble or hole.When hyperacoustic intensity when enough large, pressure is in negative half-cycle, liquid will under tension, the nuclei of bubbles rapid expansion, can increase to the original size several times, then at pressure during in positive half period, the compressed and broken collapse of bubble, be cracked into many small bubbles, form new cavitation nucleus.In addition, ultrasonic wave is when Propagation, and the energy of its vibration is constantly changed into heat energy by Absorption of Medium raises its temperature, can the raise temperature of medium of the energy of absorption.When ultrasonic wave is transmitted in the crude oil Produced Liquid, its energy constantly is absorbed and is converted into heat energy, makes the emulsion temperature of crude oil Produced Liquid raise, the reduced viscosity of system, and the pedesis of oil droplet is accelerated, and has strengthened the probability of oil droplet coalescence.Therefore, these effects of ultrasonic wave can be shortened the breakdown of emulsion time greatly, improve demulsification.
The kind of emulsion splitter is very many, and for being applied to offshore oilfield combination flooding crude oil Produced Liquid, applicant of the present utility model selects commercially available industrial emulsion splitter to carry out many experiments, though certain effect is arranged, but still feel not ideal enough.Therefore, for this special application of offshore oilfield combination flooding crude oil Produced Liquid, the applicant has developed a kind of novel emulsion splitter, is referred to as the emulsion splitter of BT series.
The emulsion splitter of BT series can be by four component copolymerizations.The first component is acrylate.Second component is selected from acrylamide, methyl acrylamide, N-sec.-propyl acrylamide, N-hydroxyethyl acrylamide, N,N-DMAA, N, a kind of in N-diethyl acrylamide.The 3rd component is selected from a kind of in dimethyl diallyl ammonium chloride, diethyl diallyl ammonium chloride.The 4th component is the 2-acrylamide-2-methyl propane sulfonic.
In a preferred embodiment of the present utility model, BT series emulsion splitter is that 2-acrylamide-2-methyl propane sulfonic (AMPS) and dimethyl diallyl ammonium chloride (DMDAAC) quarternary copolymerized reaction occur and form with acrylate (being referred to as BT-51) and acrylamide (AM).
Wherein acrylate BT51 be on the basis of polyoxyethylene oxypropylene single-butyl ether (being referred to as BH-51) by acrylic acid modified, the synthetic ester with double bond structure forms.BH-51 reacts with vinylformic acid in the acrylate generated and contains the two keys of C=C, and the two keys of C=C can further react under certain condition, introduce on the one hand the group with specific function, increase on the other hand molecular weight.
The general formula of acrylate BT-51 is:
Figure BDA00002530766400061
Wherein, R 1: the alkyl of 1~18 carbon (being preferably 1~10 carbon, more preferably 1~6 carbon)
R 2: O or N atom
-C 2H 4O-is the ethoxy unit after the oxyethane open loop
-C 3H 6O-is the methyl ethoxy unit after the propylene oxide open loop
m=20~80
n=10~40
In a preferred embodiment, R 1For CH 3(CH 2) 3-, R 2For O, BH-51 and acroleic acid esterification reaction equation are as follows:
Acrylate BT-51 is under peroxidation, can contain the two key material generation addition reactions of C=C with other, utilize this characteristics, can be by acrylate BT-51 and acrylamide (AM), 2-acrylamide-2-methyl propane sulfonic (AMPS) and dimethyl diallyl ammonium chloride (DMDAAC) reaction.
Theoretically, in this process, the effect that increases molecular weight of product is mainly played in the introducing of acrylamide, and the 2-acrylamide-2-methyl propane sulfonic plays and introduce anionic group (SO in molecule 3) effect, dimethyl diallyl ammonium chloride plays and introduce cation group (quaternary ammonium salt) effect in molecule.Like this, anionic group, cation group had both been contained in synthetic emulsion splitter molecule, contain again non-ionic epoxy ethane-epoxy propane chain, there is higher molecular weight simultaneously, therefore this tensio-active agent is diffused into water-oil interface, can significantly change the water-oil interface characteristic, thereby may there is good breaking emulsion and dewatering performance.The while acrylamide, the amount of 2-acrylamide-2-methyl propane sulfonic and dimethyl diallyl ammonium chloride is flexible as required, thereby introduce different groups in the synthesis of product molecules structure, be expected to obtain thering is different positively charged ions, negatively charged ion and oxyethane, propylene oxide is chain length distribution and the emulsion splitter molecule of molecular weight.
Acrylate BT-51, acrylamide, 2-acrylamide-2-methyl propane sulfonic, the quarternary copolymerized reaction equation of dimethyl diallyl ammonium chloride are as follows:
Quarternary copolymerized reaction is free radical reaction, by K 2S 2O 4Produce free radical under acidic conditions, free radical reacts with two keys, makes the molecule that contains double bond structure become the molecule that contains free radical, runs into other organism that contain double bond structure and carries out Radical Addition, reaches the polymerization purpose.Because acrylate BT-51, under alkaline condition, hydrolysis reaction can occur, so polyreaction should be avoided carrying out under alkaline condition; Also not all right when acidity is too high, when the pH value is less than 3, the H in solution +Excessive concentration, K 2S 2O 4With this understanding with H +Touch opportunity increases, and the reaction that produces free radical of reacting is too fast, and unfavorable to the chainpropagation of Radical Addition, molecular weight is difficult to increase, so reacting solution pH value is advisable between should being controlled at 5 ~ 6.
For the impact of each component of systematic study on synthesized BT series emulsion splitter breaking emulsion and dewatering performance, adopt and fix three reactant ratios, change the method for a reactant ratio, synthetic a series of emulsion splitters, under identical condition, estimate its breaking emulsion and dewatering performance.
Experiment shows, if the mol ratio of acrylate BT-51,2-acrylamide-2-methyl propane sulfonic, dimethyl diallyl ammonium chloride is 1:1:1, it is better that the ratio of acrylamide in emulsion splitter reaches 3~10 o'clock demulsifications, and ratio is 7 o'clock demulsification the bests.Table 1 shows relevant experimental data.
The impact of table 1 acrylamide proportioning on dehydrating effect of emulsion breaker
Figure BDA00002530766400091
On the basis of above-mentioned experiment, if the mol ratio of acrylate BT-51, acrylamide, 2-acrylamide-2-methyl propane sulfonic is that 1:7:1 is constant, the ratio of dimethyl diallyl ammonium chloride in multipolymer is that 0.5~7 o'clock demulsification is better, and ratio is 1 o'clock demulsification the best.Table 2 shows relevant experimental data.
The different dimethyl diallyl ammonium chloride proportioning of table 2 dehydration results
On the basis of above-mentioned experiment, if acrylate BT-51, acrylamide, the dimethyl diallyl ammonium chloride mol ratio in multipolymer is that 1:7:1 is constant, the ratio of 2-acrylamide-2-methyl propane sulfonic in multipolymer is that 1~7 o'clock demulsification is better, and ratio is 3 o'clock demulsification the bests.Table 3 shows relevant experimental data.
The different 2-acrylamide-2-methyl propane sulfonic of table 3 proportioning dehydration results
To sum up, the emulsion splitter that acrylate BT-51, acrylamide, 2-acrylamide-2-methyl propane sulfonic, dimethyl diallyl ammonium chloride are 1:3~10:1~7:0.5~7 synthesizeds by mole proportioning has preferably breaking emulsion and dewatering effect, especially proportioning is that the synthetic emulsion splitter (BT-73 be referred to as) of 1:7:3:1 has best breaking emulsion and dewatering effect, dehydration rate can reach 83.7%, oil content of wastewater is low, reach 183.2mg/L, after the milk sap dehydration, the upper strata crude oil water content of sample is reduced to 7.5%.
Repeatedly, a large amount of experimental results shows that the BT-73 emulsion splitter is when being applied to the combination flooding crude oil Produced Liquid of offshore oilfield, all very stable on the indexs such as oil content of wastewater after dehydration rate, dehydration after crude oil water content and dehydration, average dehydration 83.7%, water content in crude oil after average dehydration is 7.7%, significantly is better than known various industrial emulsion splitter at present.In addition, some special index that is applied to offshore oilfield of this emulsion splitter of the present utility model, for example after the dehydration, oil content of wastewater (meeting environmental requirement) and " dewatering speed " (being the water separation capability in the short period of time) aspect has excellent performance especially, as oil content of wastewater after average dehydration can be low to moderate 185.5mg/L, the dehydration rate in two hours can reach 83.7%.
Electric field (electro-dewatering) is processed the combination flooding crude oil Produced Liquid be specially adapted to after ultrasonication and is processed, to remove further contained water in combination flooding crude oil Produced Liquid.The combination flooding crude oil Produced Liquid that ultrasonic wave and electric field is combined to process to offshore oilfield can be realized processing fast and efficiently, can reach again desirable dehydrating of crude oil rate.
Below return Fig. 1 and describe employing aforesaid device to combination flooding crude oil Produced Liquid, the method for particularly offshore oilfield combination flooding crude oil Produced Liquid being processed.
The method roughly comprises the steps:
A) make combination flooding crude oil Produced Liquid from recovery well 1 (for example, moisture approximately 60~70%, approximately 30~40 ℃ of temperature) be heated to certain temperature (for example 60~70 ℃) through well heater 2;
B) add emulsion splitter by the emulsion splitter feedway to the combination flooding crude oil Produced Liquid heated;
C) combination flooding raw material Produced Liquid is entered in ultrasonic treatment unit 5;
D) regulate ultrasonic power, make combination flooding crude oil Produced Liquid in ultrasonic treatment unit 5, stay for some time (for example 5-10 minute) carry out ultrasonication;
E) make the combination flooding crude oil Produced Liquid after ultrasonication enter sedimentation device 6, stay for some time therein and carry out heat sink most of water that falls to remove, water ratio is reduced to below 25%, and then isolates the oil on upper strata; And
F) make to enter apparatus for electrodewatering 7 from the combination flooding crude oil Produced Liquid of sedimentation device 6, stand therein to obtain the moisture qualified crude oil that water content is less than 1% after electric field treatment and sedimentation, discharge from the top of apparatus for electrodewatering 7.
Being sent to waste disposal plant the oily(waste)water of wherein, discharging from the bottom of sedimentation device 6 and apparatus for electrodewatering 7 merges is processed.
Some results of study that the applicant carries out the processing of crude oil Produced Liquid by above-mentioned equipment and method are as follows.
In the situation that certain ultrasonic frequency (for example 28KHz), increase along with ultrasonic power, dewatering speed and the dehydration rate of combination flooding crude oil Produced Liquid obviously raise, but power increases not significantly variation again, and the better balance point of energy consumption and dehydration is about 126W.
Importantly, intensified by ultrasonic wave can significantly shorten the settling time of combination flooding crude oil Produced Liquid.Combination flooding crude oil Produced Liquid just can reach and not add heat sink effect of falling 90 minutes in the ultrasonic wave situation in ul-trasonic irradiation after heat sedimentation in 5 minutes in 10 minutes, has therefore significantly improved dewatering efficiency.
After adopting ultrasonic wave and electric field-enhanced processing, can significantly reduce the breakdown of emulsion dosage added.
Although above, in conjunction with preferred embodiment, treatment facility and the method to crude oil Produced Liquid of the present utility model describes in detail, and those of ordinary skill in the art makes the various changes that are equal to and modification on the basis of described content in the text.For example, the formation of emulsion splitter feedway can change, and is not limited to the form of container and transfer pump, etc.Therefore, protection domain of the present utility model should be limited by described claims.

Claims (3)

1. the treatment facility of the crude oil of the combination flooding for an offshore oilfield Produced Liquid, described combination flooding crude oil Produced Liquid refers to the crude oil Produced Liquid of gathering by injecting the binary composite oil displacement agent be comprised of polymkeric substance and tensio-active agent, it is characterized in that, described equipment comprises: the well heater (2) that is connected to recovery well (1); Ultrasonic treatment unit (5), described ultrasonic treatment unit is received the combination flooding crude oil Produced Liquid heated, and it is carried out to ultrasonication; Be connected to the sedimentation device (6) of ultrasonic treatment unit, it receives the combination flooding crude oil Produced Liquid after ultrasonication, and makes combination flooding crude oil Produced Liquid heat sink falling and dewatering therein, and separates fuel-displaced; And the apparatus for electrodewatering (7) that is connected to described sedimentation device, it receives the combination flooding crude oil Produced Liquid after sedimentation is processed, and combination flooding crude oil Produced Liquid is carried out to electric field treatment and dehydration further.
2. the treatment facility of combination flooding crude oil Produced Liquid as claimed in claim 1, it is characterized in that, also comprise: emulsion splitter feedway (3,4), described emulsion splitter feedway is supplied with emulsion splitter to the combination flooding crude oil Produced Liquid heated by described well heater (2).
3. the treatment facility of combination flooding crude oil Produced Liquid as claimed in claim 1, is characterized in that, described ultrasonic treatment unit (5) comprising: ultrasonic generator (51); Be connected to the ultrasonic transducer (52) of described ultrasonic generator; Be connected to the vibration-sensing rod (53) of described ultrasonic transducer by joint flange (56); And dewatering container (54).
CN 201220665161 2012-12-05 2012-12-05 Treatment equipment for compound flooding oil extraction liquid of offshore oilfield Expired - Lifetime CN202954003U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102942959A (en) * 2012-12-05 2013-02-27 中国石油化工股份有限公司胜利油田分公司地质科学研究院 Treating equipment and method used for combination flooding crude oil produced liquid in offshore oilfield
WO2015116727A1 (en) * 2014-01-31 2015-08-06 Triton Emission Solutions Inc. Removal of contaminants from bunker oil fuel
CN105776704A (en) * 2016-04-08 2016-07-20 江苏大轩石化设备有限公司 Super-high power ultrasonic sump oil emulsion breaking dehydration method
US9771523B2 (en) 2014-07-11 2017-09-26 Triton Emission Solutions Inc. Fuel cleaning system and method for a ship

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102942959A (en) * 2012-12-05 2013-02-27 中国石油化工股份有限公司胜利油田分公司地质科学研究院 Treating equipment and method used for combination flooding crude oil produced liquid in offshore oilfield
CN102942959B (en) * 2012-12-05 2015-06-03 中国石油化工股份有限公司胜利油田分公司地质科学研究院 Method used for combination flooding crude oil produced liquid in offshore oilfield
WO2015116727A1 (en) * 2014-01-31 2015-08-06 Triton Emission Solutions Inc. Removal of contaminants from bunker oil fuel
US9878300B2 (en) 2014-01-31 2018-01-30 Triton Emission Solutions Inc. Removal of contaminants from bunker oil fuel
US9771523B2 (en) 2014-07-11 2017-09-26 Triton Emission Solutions Inc. Fuel cleaning system and method for a ship
CN105776704A (en) * 2016-04-08 2016-07-20 江苏大轩石化设备有限公司 Super-high power ultrasonic sump oil emulsion breaking dehydration method

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