CN103277081A - Treatment process and device for oil-water well fractured and acidified flowback liquid - Google Patents
Treatment process and device for oil-water well fractured and acidified flowback liquid Download PDFInfo
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- CN103277081A CN103277081A CN2013102066704A CN201310206670A CN103277081A CN 103277081 A CN103277081 A CN 103277081A CN 2013102066704 A CN2013102066704 A CN 2013102066704A CN 201310206670 A CN201310206670 A CN 201310206670A CN 103277081 A CN103277081 A CN 103277081A
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Abstract
The invention provides a treatment process for oil-water well fractured and acidified flowback liquid. The operation steps of degritting, filtration, pH regulation, gas-liquid separation, centrifugation and the liker are carried out on the flowback liquid, the initial flowback liquid can be treated to be in the degree of entering an oilfield sewage system, impacts cannot be caused to an existing sewage system, deacidification, degritting and dewatering can also be carried out on subsequent flowback liquid, and the needs of entering a crude oil output system are met. Meanwhile, the invention further provides a treatment device for the oil-water well fractured and acidified flowback liquid. The process procedures are achieved, the structure of the device is compact, the treatment device is vehicle-mounted movable equipment, and transportation and mounting in different places are convenient.
Description
Technical field
The present invention relates to chemical process and apparatus field, refer to that especially a kind of fracture in oil and water wells, acidifying return the discharge opeing treatment process, the invention still further relates to a kind of fracture in oil and water wells, the discharge opeing treatment facility is returned in acidifying.
Background technology
In oilfield exploitation procedure, pressure break, acidifying are the oil recovery factor volume increase means of using always.But behind pressure break, acidizing treatment, the pressure break of injection, acidifying solution need return and flow back to ground, and this class I liquid I is referred to as and returns discharge opeing.The row's of returning process is divided into two stages, the phase I, and contain acid, contain solid oily waste water based on height, every mouthful of pressure break/acidifying well waste discharge every day hundreds of is to thousands of sides.These sewage generally leave the well site periphery nearby in, disperse and discontinuous characteristics because waste water has, and are difficult to unified focusing on.The liquid that second stage returned row is mainly the crude oil extraction liquid that contains sand and contain acid, this quasi-oil is unsuitable for directly entering the crude oil exporting system, all be that this part crude oil is directly burned at the scene in the past, after the crude oil that exploitation is come out satisfies into system requirements, just stop burning and send into the multi-purpose station pipeline system, the processing method of burning, not only waste valuable crude resources, and environment is brought very big harm.
In order to adapt to the new situations of the organic wastes improvement that produces in the current oilfield exploitation procedure, composition and the feature of discharge opeing returned in acidifying at oil-gas field fracturing, must research and develop can integrated treatment two stage heterogeneitys return discharge opeing with regard to ground contamination control treatment process and equipment.At present, be to disperse to collect, centrally dispose about the disposal options of these distributing well site waste water mode comparatively commonly used both at home and abroad, and just at the simple process of phase I waste water, be reported in media without any treatment technology for second stage is domestic.For these reasons, at the pollution feature of oil-gas field development, be that unit carries out pollutant and handles on the spot with the pollutant emission point, setting up distributed processing system is the important channel that control is polluted in current oil field with polluting control model.
Summary of the invention
The objective of the invention is to propose a kind of fracture in oil and water wells, the discharge opeing treatment process is returned in acidifying, be intended to solve or slow down handle in the prior art return the discharge opeing very complicated, pollute easily, the problem of waste etc.;
Another object of the present invention be a kind of fracture in oil and water wells is proposed, the discharge opeing treatment facility is returned in acidifying, is intended to realize above-mentioned process means, solve or slow down the above-mentioned problem of mentioning
Technical scheme of the present invention is achieved in that a kind of fracture in oil and water wells, acidifying return the discharge opeing treatment process, may further comprise the steps:
(1) discharge opeing be will return and desanding, filtration carried out;
(2) discharge opeing of returning after will filtering is carried out PH and is regulated, to neutral;
(3) will return discharge opeing and carry out gas-liquid separation;
(4) discharge opeing of returning after will outgasing is carried out centrifugally, collects the oil water mixture that obtains after centrifugal.
(5): oil water mixture is separated.
Further, between step (3) and step (4), also have following steps:
A, the discharge opeing of returning after the gas-liquid separation is heated up, to 60 ℃;
B, intensification outgas after finishing.
C, after the degassing, carry out ultrasonic emulsion breaking;
The discharge opeing of returning behind d, the ultrasonic emulsion breaking adds flocculant and coagulant.
A kind of fracture in oil and water wells, the discharge opeing treatment facility is returned in acidifying, comprise by pipeline connect successively with lower device: hydrocyclone, strainer, pipe-line mixer, gas-liquid separator, the profit lift pump, horizontal screw centrifuge, surge tank and profit output pump, also comprise the alkali chemicals dosing plant, described alkali chemicals dosing plant is connected on the pipeline between described pipe-line mixer and the described gas-liquid separator by pipeline, and described gas-liquid separator all is connected the gas liquid knockout by extract duct with the upper end of described degassing surge tank, described gas liquid knockout is connected with torch again, and described horizontal screw centrifuge also connects promising its provides the water pot of flushing water.
Further, also be provided with the PH automatic detector on the described gas-liquid separator, described PH automatic detector is connected with described alkali chemicals dosing plant.
Further, also be connected with electric heater and degassing surge tank by pipeline between described gas-liquid separator and described profit lift pump, the upper end of described degassing surge tank connects described gas liquid knockout by extract duct.
Further, between described profit lift pump and described horizontal screw centrifuge, also be provided with the ultrasonic dehydration machine.
Further, described fracture in oil and water wells, acidifying are returned the discharge opeing treatment facility and are also comprised by pipeline and be connected flocculant chemicals dosing plant, coagulant chemicals dosing plant on the pipeline between described ultrasonic dehydration machine and the described horizontal screw centrifuge.
Further, behind described profit output pump, go back pipeline and be connected with three-phase centrifuge.
Further, described fracture in oil and water wells, acidifying are returned the discharge opeing treatment facility and are also comprised the diesel generating set that is electrically connected with the need electric installation.
Further, described fracture in oil and water wells, acidifying are returned the discharge opeing treatment facility and also are included as instrument compressed-air actuated air compressor sled is provided.
Further, described fracture in oil and water wells, acidifying is returned the discharge opeing treatment facility and is also comprised first trailer and second trailer, described first trailer is provided with described hydrocyclone, described strainer, described pipe-line mixer, described gas-liquid separator, described electric heater, described degassing surge tank, described profit lift pump, described ultrasonic dehydration machine, described horizontal screw centrifuge, described surge tank, described profit output pump, described water pot, described gas liquid knockout, described torch, described alkali chemicals dosing plant, described polyacrylamide chemicals dosing plant, described polymeric aluminum chemicals dosing plant and described three-phase centrifuge, described second trailer are provided with described diesel generating set and described air compressor sled.
Further, described first trailer is provided with upper and lower layer platform, wherein said horizontal screw centrifuge is located at upper platform, and the dosing pump of described gas-liquid separator, described degassing surge tank, described gas liquid knockout and described alkali chemicals dosing plant, described polyacrylamide chemicals dosing plant and described polymeric aluminum chemicals dosing plant all penetrates upper platform and arranges; Described hydrocyclone, described strainer, described pipe-line mixer, described electric heater, described profit lift pump, described ultrasonic dehydration machine, described surge tank, described profit output pump, described water pot, described torch and described three-phase centrifuge apparatus arrangement are at lower floor's platform.
Further, also be provided with Central Control Room and rest room on described second trailer.
Beneficial effect of the present invention is: the present invention proposes a kind of fracture in oil and water wells, the discharge opeing treatment process is returned in acidifying, carry out desanding by returning discharge opeing, filter, transfer PH, gas-liquid separation, operating procedure such as centrifugal, can be returned the degree that oil-feed field foul sewer system is handled in discharge opeing the initial stage, impact can for existing foul sewer system, also can be returned the discharge opeing depickling later stage, desanding, dehydration, satisfy and enter the crude oil exporting system requirements, therefore, not only can solve and return the mishandling problem of environmental pollution that brings of discharge opeing but also can reclaim crude oil, economic benefit and social benefit have both, simultaneously, the invention allows for a kind of fracture in oil and water wells, the discharge opeing treatment facility is returned in acidifying, realizes above activities.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that the first trailer plane structure schematic diagram among the embodiment of discharge opeing treatment process and equipment is returned in a kind of fracture in oil and water wells of the present invention, acidifying;
Fig. 2 returns the second trailer plane structure schematic diagram among the embodiment of discharge opeing treatment process and equipment for invention a kind of fracture in oil and water wells, acidifying;
Fig. 3 returns main technique flow process trend and main device annexation schematic diagram in discharge opeing treatment process and the equipment for a kind of fracture in oil and water wells of invention, acidifying.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As Fig. 1, Fig. 2 and shown in Figure 3, the discharge opeing treatment process is returned in a kind of fracture in oil and water wells, acidifying, may further comprise the steps:
(1) discharge opeing be will return and desanding, filtration carried out;
(2) discharge opeing of returning after will filtering is carried out PH and is regulated, to neutral;
(3) will return discharge opeing and carry out gas-liquid separation;
(4) discharge opeing of returning after will outgasing is carried out centrifugally, collects the oil water mixture that obtains after centrifugal.
(5): oil water mixture is carried out three phase separation
Further, between step (3) and step (4), also have following steps:
A, the discharge opeing of returning after the gas-liquid separation is heated up, to 60 ℃;
B, intensification outgas after finishing.
C, after the degassing, carry out ultrasonic emulsion breaking;
The discharge opeing of returning behind d, the ultrasonic emulsion breaking adds flocculant and coagulant.
A kind of fracture in oil and water wells, the discharge opeing treatment facility is returned in acidifying, comprise by pipeline connect successively with lower device: hydrocyclone 1, strainer 2, pipe-line mixer 3, gas-liquid separator 4, profit lift pump 7, horizontal screw centrifuge 9, surge tank 10 and profit output pump 11, also comprise alkali chemicals dosing plant 15, alkali chemicals dosing plant 15 is connected on the pipeline between pipe-line mixer 3 and the gas-liquid separator 4 by pipeline, and the upper end of gas-liquid separator 4 connects gas liquid knockout 13 by extract duct, gas liquid knockout 13 is connected with torch 14 again, and horizontal screw centrifuge 9 also connects promising its provides the water pot 12 of flushing water.
Further, also be provided with the PH automatic detector on the gas-liquid separator 4, the PH automatic detector is electrically connected with alkali chemicals dosing plant 15.
Further, also be connected with electric heater 5 and degassing surge tank 6 by pipeline between gas-liquid separator 4 and profit lift pump 7, the upper end of degassing surge tank 6 connects gas liquid knockout 13 by extract duct.
Further, between profit lift pump 7 and horizontal screw centrifuge 9, also be provided with ultrasonic dehydration machine 8.
Further, this fracture in oil and water wells, acidifying are returned the discharge opeing treatment facility and are also comprised by pipeline and be connected flocculant chemicals dosing plant 16, coagulant chemicals dosing plant 17 on the pipeline between ultrasonic dehydration machine 8 and the horizontal screw centrifuge 9.
Further, behind profit output pump 11, go back pipeline and be connected with three-phase centrifuge 20.
Further, this fracture in oil and water wells, acidifying are returned the discharge opeing treatment facility and are also comprised the diesel generating set 19 that is electrically connected with the need electric installation.
Further, this fracture in oil and water wells, acidifying are returned the discharge opeing treatment facility and also are included as instrument compressed-air actuated air compressor sled 18 is provided.
Further, this fracture in oil and water wells, acidifying is returned the discharge opeing treatment facility and is also comprised first trailer and second trailer, first trailer is provided with hydrocyclone 1, strainer 2, pipe-line mixer 3, gas-liquid separator 4, electric heater 5, degassing surge tank 6, profit lift pump 7, ultrasonic dehydration machine 8, horizontal screw centrifuge 9, surge tank 10, profit output pump 11, water pot 12, gas liquid knockout 13, torch 14, alkali chemicals dosing plant 15, flocculant chemicals dosing plant 16, coagulant chemicals dosing plant 17 and three-phase centrifuge 20, the second trailers are provided with diesel generating set 19 and air compressor sled 18.
Further, first trailer is provided with upper and lower layer platform, wherein horizontal screw centrifuge 9 is located at upper platform, and the dosing pump of gas-liquid separator 4, the degassing surge tank 6, gas liquid knockout 13 and alkali chemicals dosing plant 15, flocculant chemicals dosing plant 16 and coagulant chemicals dosing plant 17 all penetrates upper platform and arranges; Hydrocyclone 1, strainer 2, pipe-line mixer 3, electric heater 5, profit lift pump 7, ultrasonic dehydration machine 8, surge tank 10, profit output pump 11, water pot 12, torch 14 and three-phase centrifuge 20 are arranged in lower floor's platform.
Further, also be provided with Central Control Room 22 and rest room 21 on second trailer.
Now, the inventor is according to a concrete case study on implementation, with regard to this fracture in oil and water wells, acidifying is returned concrete operations and the cooperation between each device of discharge opeing treatment process and is used as a detailed description: present case is handled for the fracturing outlet liquid to one oil field, the external Middle East, return discharge opeing and enter hydrocyclone 1, effect is that the sand that returns in the discharge opeing is removed, the sand that returns in the discharge opeing is handled the back by the discharge of desander bottom through hydrocyclone 1, after filtering by strainer 2 then, liquid in pipe-line mixer 3 and alkali lye and after enter gas-liquid separator 4, the effect of gas-liquid separator 4 is associated gases of sloughing in the oil well produced liquid, possesses the automatic measuring ability of pH value simultaneously, detection signal can be fed back to alkali medicine system 15, regulate the switch of dosing pump and realize Automatic Dosing, under the effect of gas-liquid separator 4, return discharge opeing and slough wherein associated gas, oil water mixture heats up through electric heater 5, effect is that the wet crude temperature is risen to 60 ℃, satisfy the operation requirement of horizontal screw centrifuge 9, oil water mixture is through electric heater, temperature rises to 60 ℃ by 40 ℃, outgas again through degassing surge tank 6 again, extraction liquid after the degassing is sent into ultrasonic dehydration machine 8 and coagulant through profit lift pump 7, flocculant mixes, in the present embodiment, coagulant is polymeric aluminum, flocculant is polyacrylamide, through ultrasonic dehydration machine 8 higher-orders of oscillation, mainly be to utilize hyperacoustic mechanical shock effect and heat effect, reduce the mechanical strength of oil-water interface film and reduce viscosity of crude, realize the effect of breakdown of emulsion, accelerate oil, water, Gu three phase separation, enter horizontal screw centrifuge 9 again and remove the granule solid, mud effluxes, the oil water mixture that removes behind the solid enters surge tank 10, after boosting, profit output pump 11 is delivered to main technological process, water pot 12 is responsible for centrifuge flushing water is provided, after the gas that gas-liquid separator 4 and degassing surge tank 6 are deviate from removes lime set through gas liquid knockout 13, deliver to torch 14 burnings; Also can enter surge tank 10 after profit output pump 11 boosts at oil water mixture as required, send into three-phase centrifuge 20, carry out the meticulous separation of profit, isolated crude oil can reach outer defeated requirement, and isolated water can efflux, regularly deslagging.
Adopt waste water, crude oil after the said equipment is handled all to satisfy outer defeated requirement, reduce environment pollution, economic benefit and social benefit have both.
The chemical agent sled that the outfit of discharge opeing treatment facility is returned in this fracture in oil and water wells, acidifying comprises alkali chemicals dosing plant 15, flocculant chemicals dosing plant 16 and coagulant chemicals dosing plant 17, alkali be in and extraction liquid in acid, prevent that acid is to the corrosion of equipment and system pipeline, flocculant and coagulant then are conducive to the processing of horizontal screw centrifuge 9, this equipment is also supporting simultaneously has air compressor sled 18 to be used for providing system's instrument compressed air, and diesel generating set 19, comprise diesel fuel tank and diesel-driven generator in the present embodiment, for this equipment provides supply of electric power.
Said apparatus is arranged on two locomotives, and namely first trailer and second trailer are vehicle-mounted packaged type, is convenient to strange land resettlement, is installed on operation on the spot.
Wherein, first trailer is of a size of: 15m*3m*5.2m, the second car trailer is of a size of: 15m*3m*5.4m.First trailer and second trailer also assemble other attaching materials such as essential connecting line, valve, instrument.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the discharge opeing treatment process is returned in a fracture in oil and water wells, acidifying, it is characterized in that: may further comprise the steps:
(1) discharge opeing be will return and desanding, filtration carried out;
(2) discharge opeing of returning after will filtering is carried out PH and is regulated, to neutral;
(3) will return discharge opeing and carry out gas-liquid separation;
(4) discharge opeing of returning after will outgasing is carried out centrifugally, collects the oil water mixture that obtains after centrifugal;
(5) oil water mixture is separated.
2. the discharge opeing treatment process is returned in fracture in oil and water wells, acidifying described in claim 1, it is characterized in that: between step (3) and step (4), also have following steps:
A, the discharge opeing of returning after the gas-liquid separation is heated up, to 60 ℃;
B, intensification outgas after finishing;
C, after the degassing, carry out ultrasonic emulsion breaking;
The discharge opeing of returning behind d, the ultrasonic emulsion breaking adds flocculant and coagulant.
3. fracture in oil and water wells, the discharge opeing treatment facility is returned in acidifying, it is characterized in that, comprise by pipeline connect successively with lower device: hydrocyclone, strainer, pipe-line mixer, gas-liquid separator, the profit lift pump, horizontal screw centrifuge, surge tank and profit output pump, also comprise the alkali chemicals dosing plant, described alkali chemicals dosing plant is connected on the pipeline between described pipe-line mixer and the described gas-liquid separator by pipeline, and described gas-liquid separator all is connected the gas liquid knockout by extract duct with the upper end of described degassing surge tank, described gas liquid knockout is connected with torch again, and described horizontal screw centrifuge also connects promising its provides the water pot of flushing water.
4. the discharge opeing treatment facility is returned in fracture in oil and water wells, acidifying described in claim 3, it is characterized in that: also be provided with the PH automatic detector on the described gas-liquid separator, described PH automatic detector is connected with described alkali chemicals dosing plant; Also be connected with electric heater and degassing surge tank by pipeline between described gas-liquid separator and the described profit lift pump, the upper end of described degassing surge tank connects described gas liquid knockout by extract duct; Also be provided with the ultrasonic dehydration machine between described profit lift pump and the described horizontal screw centrifuge.
5. the discharge opeing treatment facility is returned in fracture in oil and water wells, acidifying described in claim 4, it is characterized in that: also comprise by pipeline being connected flocculant chemicals dosing plant, coagulant chemicals dosing plant on the pipeline between described ultrasonic dehydration machine and the described horizontal screw centrifuge; Behind described profit output pump, go back pipeline and be connected with three-phase centrifuge.
6. the discharge opeing treatment facility is returned in fracture in oil and water wells, acidifying described in claim 5, it is characterized in that: also comprise the diesel generating set that is electrically connected with the need electric installation and provide compressed-air actuated air compressor sled for instrument.
7. fracture in oil and water wells described in claim 6, the discharge opeing treatment facility is returned in acidifying, it is characterized in that: also comprise first trailer and second trailer, described first trailer is provided with described hydrocyclone, described strainer, described pipe-line mixer, described gas-liquid separator, described electric heater, described degassing surge tank, described profit lift pump, described ultrasonic dehydration machine, described horizontal screw centrifuge, described surge tank, described profit output pump, described water pot, described gas liquid knockout, described torch, described alkali chemicals dosing plant, described polyacrylamide chemicals dosing plant, described polymeric aluminum chemicals dosing plant and described three-phase centrifuge, described second trailer are provided with described diesel generating set and described air compressor sled.
8. the discharge opeing treatment facility is returned in fracture in oil and water wells, acidifying described in claim 7, it is characterized in that: described first trailer is provided with upper and lower layer platform, wherein said horizontal screw centrifuge is located at upper platform, and the dosing pump of described gas-liquid separator, described degassing surge tank, described gas liquid knockout and described alkali chemicals dosing plant, described polyacrylamide chemicals dosing plant and described polymeric aluminum chemicals dosing plant all penetrates upper platform and arranges; Described hydrocyclone, described strainer, described pipe-line mixer, described electric heater, described profit lift pump, described ultrasonic dehydration machine, described surge tank, described profit output pump, described water pot, described torch and described three-phase centrifuge apparatus arrangement are at lower floor's platform.
9. the discharge opeing treatment facility is returned in fracture in oil and water wells, acidifying described in claim 7, it is characterized in that: also be provided with Central Control Room and rest room on described second trailer.
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Address after: 100088, 16 floor, golden Australia International Building, No. 17 Madian East Road, Beijing, Haidian District Patentee after: Beijing Huibopu Energy Technology Co., Ltd. Patentee after: Daqing Huibopu Petroleum Machinery Equipment Manufacturing Co., Ltd. Address before: 100120 Beijing city Xicheng District Street No. 26 Hospital No. 1 Building 6 layer 709 Patentee before: Beijing Huibopu Energy Technology Co., Ltd. Patentee before: Daqing Huibopu Petroleum Machinery Equipment Manufacturing Co., Ltd. |