CN203229404U - Efficient oil removing setting tank for processing oilfield produced water - Google Patents

Efficient oil removing setting tank for processing oilfield produced water Download PDF

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Publication number
CN203229404U
CN203229404U CN 201320274043 CN201320274043U CN203229404U CN 203229404 U CN203229404 U CN 203229404U CN 201320274043 CN201320274043 CN 201320274043 CN 201320274043 U CN201320274043 U CN 201320274043U CN 203229404 U CN203229404 U CN 203229404U
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China
Prior art keywords
oil
pipe
tank
air
type
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CN 201320274043
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Chinese (zh)
Inventor
冯英明
夏福军
王庆吉
房永�
国胜娟
韩丽华
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Petrochina Co Ltd
Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
Daqing Oilfield Engineering Co Ltd
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Daqing Oilfield Co Ltd
China Petroleum and Natural Gas Co Ltd
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Priority to CN 201320274043 priority Critical patent/CN203229404U/en
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Abstract

The utility model relates to an efficient oil removing setting tank for processing oilfield produced water, and mainly solves the problem that in the prior art, the natural setting tank is large in size and low in processing efficiency. The setting tank is characterized in that an O-shaped oil collecting pipe (5) of a floating oil recovery system is sleeved on the upper part of a central column (2), wherein the O-shaped oil collecting pipe is respectively connected with an oil recovery disc (3) and a buoy (4) through a radial connecting pipe, and is downwardly connected with an upper section rigid oil transmission pipe (6) which is connected with a lower section rigid oil transmission pipe (8) through a rotary joint (7). The lower section rigid oil transmission pipe is connected with an oil discharge pipe (12). An O-shaped air floating main pipe (11) of an air floating system is sleeved on the upper part of the central column. The O-shaped air floating main pipe is connected with air floating branch pipes (10) which are provided with a plurality of gas-dissolving releasing heads. The efficient oil removing setting tank for processing oilfield produced water can quickly separate oil and water, and the separation efficiency of the setting tank is improved.

Description

Oil field extracted water highly-efficient treatment oil removing slurry tank
Technical field
The utility model relates to a kind of slurry tank in the technical field of petroleum extraction, particularly a kind of oil field extracted water highly-efficient treatment oil removing slurry tank.
Background technology
Present oil field produced water treatment natural subsidence jar commonly used carries out oily water separation, and the natural subsidence jar comprises tank body, collection tank, water distribution system and water gathering system etc.Oily(waste)water carries out the sedimentation of for some time in slurry tank, utilize the profit density difference, realizes the purpose of oily water separation.There is following problem in this class slurry tank: it is discontinuous one, to receive oil.It is fixed that the oil trap of natural subsidence jar upper design mostly is the circle ring, requires tank level to be higher than collection tank and just can receive oil, and often adopting the people is the oily mode of regular receipts of heightening tank level.Increased labour intensity like this, made that the oily water treatment process is complicated; And because the top oil reservoir can not in time be put away, and overstand in jar easily forms the hardcoat that ageing oil even one deck can not flow, be difficult to realize the oily effect of the receipts of envisioning, and cause difficulty to subsequent disposal.Two, oil removal efficiency is low.The natural subsidence jar just relies on the profit density difference to reach the purpose of oily water separation, can at the water drive produced water disposal.But along with the popularization of tertiary oil recovery technology, the especially popularization of technology of reservoir sweep such as polymkeric substance, the agent of poly-table and ternary composite driving, recovered water water quality becomes increasingly complex, and oily water separation is more and more difficult.If still adopt the natural subsidence jar certainly will cause equipment volume huge, problem such as floor space is big, and processing efficiency is low.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the problem that natural subsidence jar equipment volume is huge and processing efficiency is low that exists in the background technology, and provide a kind of oil field extracted water highly-efficient treatment oil removing slurry tank, this oil field extracted water highly-efficient treatment oil removing slurry tank, can accelerate oily water separation, improve the separation efficiency of slurry tank.
The invention for solving the technical problem can reach by following technical solution: this oil field extracted water highly-efficient treatment oil removing slurry tank comprises tank body, newel, oil exit pipe, air dissolved pump rising pipe, air dissolved pump water inlet pipe; Air dissolved pump rising pipe, air dissolved pump water inlet pipe, oil exit pipe are fixed on tank base; Center fixation newel in the described tank body; Also be provided with mechanical support in the described tank body and be fixed on tank body interior unsteady oil recovery system and air-flotation system, the O type oil header of described unsteady oil recovery system is nested with on newel top, described O type oil header connects splash pan and cursory respectively by pipe connecting radially, O type oil header connects epimere rigidity transition pipeline downwards, and epimere rigidity transition pipeline connects hypomere rigidity transition pipeline by rotary joint; Hypomere rigidity transition pipeline connects oil exit pipe; The O type air supporting main of described air-flotation system is nested with on newel top, and described O type air supporting main connects the air supporting arm, evenly is furnished with some molten gas on the air supporting arm and discharges head; Described O type air supporting main is in O type oil header bottom.
The utility model is compared with the above-mentioned background technology can have following beneficial effect: this oil field extracted water highly-efficient treatment oil removing slurry tank is owing to adopt said structure, by setting gradually unsteady oil-collecting device, water inlet system, air-flotation system, water gathering system and sludge drainage system from top to bottom in slurry tank inside, oil field extracted water is carried out the sedimentation oil removal treatment.The oil-collecting device that wherein floats can fluctuate along with the variation of innage, crude oil to the certain limit different heights reclaims timely, promoted the level of automation of oily(waste)water sedimentation treating processes, avoided owing to can not receive the problem that oil brings continuously; Wherein air-flotation system carries oil droplet and floats rapidly by discharge micro-bubble in jar, has accelerated oily water separation speed.Can improve the slurry tank processing efficiency, save investment and running cost, improve the slurry tank level of automation, improve the slurry tank treatment effect, alleviate the processing burden of subsequent disposal unit.Particularly the processing at tertiary oil recovery produced water is significant.
Description of drawings:
Accompanying drawing 1 is structural representation of the present utility model.
Among the figure: the 1-tank body, the 2-newel, the 3-splash pan, 4-is cursory, 5-O type oil header, 6-epimere rigidity transition pipeline, the 7-rotary joint, 8-hypomere rigidity transition pipeline, the molten gas of 9-discharges head, 10-air supporting arm, 11-O type air supporting main; The 12-oil exit pipe, 13-air dissolved pump rising pipe, 14-air dissolved pump water inlet pipe.
Embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
As shown in Figure 1, this oil field extracted water highly-efficient treatment oil removing slurry tank comprises tank body 1, newel 2, oil exit pipe 12, air dissolved pump rising pipe 13, air dissolved pump water inlet pipe 14; Air dissolved pump rising pipe 13, air dissolved pump water inlet pipe 14, oil exit pipe 12 are fixed on tank body 1 bottom; Center fixation newel 2 in the described tank body 1; Also be provided with mechanical support in the tank body 1 and be fixed on unsteady oil recovery system and air-flotation system in the tank body 1, the O type oil header 5 of described unsteady oil recovery system is nested with on newel 2 tops, described O type oil header 5 connects splash pan 3 and cursory 4 respectively by pipe connecting radially, O type oil header 5 connects epimere rigidity transition pipeline 6 downwards, and epimere rigidity transition pipeline 6 connects hypomere rigidity transition pipeline 8 by rotary joint 7; Hypomere rigidity transition pipeline 8 connects oil exit pipe 12; The O type air supporting main 11 of described air-flotation system is nested with on newel 2 tops, and described O type air supporting main 11 connects air supporting arms 10, evenly is furnished with some molten gas on the air supporting arm 10 and discharges 9; Described O type air supporting main 11 is in O type oil header 5 bottoms; Fixedly connected with air dissolved pump rising pipe 13 by pipe connecting in described O type air supporting main 11 bottoms.
The utility model oil field extracted water highly-efficient treatment oil removing slurry tank is provided with newel 2, unsteady oil recovery system, water inlet system, air-flotation system, water gathering system and mud exhauster in the tank body 1.Oil recovery system, water inlet system, air-flotation system and the water gathering system of wherein floating all is on the horizontal plane that is evenly distributed in tank body 1 radially centered by newel separately.
The oil recovery system that floats is fixed in the tank body 1 by the mechanical support that welds together with oil exit pipe.The oil recovery system that floats floats on the tank interior liquid level by cursory, fluctuates by the height change of rotary joint 7 along with tank level.Float oil recovery system by the oil reservoir on the splash pan collection liquid level, be focused in the O type oil header, transport to outside the jar through rigidity transition pipeline, oil exit pipe.
Air supporting arm one end discharges head with the efficient molten gas of even layout and links to each other, and an end links to each other with O type air supporting main; Mechanical support and air supporting arm weld together in jar, efficient molten gas is discharged head, air supporting arm and O type air supporting main be fixed on jar interior certain altitude.Air dissolved pump outside the tank body forms the microbubble dissolved air water and discharges head by air dissolved pump rising pipe, O type air supporting main, air supporting arm, efficient molten gas successively after the suction of air dissolved pump water inlet pipe, discharges in tank body.D/d microbubble and oil droplet collision combination, carrying oil droplet floats rapidly, thereby improve oily water separation speed, realize the efficient processing of slurry tank, the oil reservoir that separates back formation is external by the timely drain tank of oil-collecting device that floats, avoid receiving the untimely problem of bringing of oil, improved the slurry tank processing efficiency.
Described water inlet system and water gathering system adopt conventional slurry tank collection, water distribution design, all are made up of main, Zhi Ganguan, arm and diffusion divider.Diffusion divider in water inlet system and the water gathering system all is on the horizontal plane that is evenly distributed on radially centered by the newel in tank body separately, has guaranteed the homogeneity of water-in and water-out.Water inlet system links to each other respectively at newel with water gathering system, and newel is divided into water distributing area and catchment area by dividing plate.Water inlet pipe links to each other with water distributing area, and rising pipe links to each other with the catchment area.Bottom in the tank body also is provided with many group mud exhausters, links to each other with shore pipe.The solid matter that is used for the described tank base deposition of cleaning.
Oil field extracted water is evenly distributed in the tank body through newel, water inlet system successively by water inlet pipe, evenly flow downward along whole tank body, rely on the profit density difference to add that air-flotation system produces the rolling action of microbubble, oil droplet floats rapidly to tank body internal upper part liquid level and assembles, water then moves downward, enter the tank body bottom, thereby realize the profit sharp separation.The oil droplet that accumulates on the interior liquid level of tank body is external by the timely drain tank of oil recovery system that floats, and the water that moves downward is delivered to next processing unit through water gathering system by rising pipe.Deposit the foreign material such as mud that get off through for some time in the tank body, outside mud exhauster, shore pipe drain tank.
The recovered water that this oil field extracted water highly-efficient treatment oil removing slurry tank handling oil real estate is given birth to makes wherein oil, water, mud reach effective separation; Unsteady oil recovery system has solved owing to slurry tank can not be received the variety of issue that oil brings continuously, has reduced labour intensity; By the air-flotation system that arranges in the tank body, accelerated oily water separation speed, improved the slurry tank separation efficiency, saved investment and running cost.

Claims (2)

1. an oil field extracted water highly-efficient treatment oil removing slurry tank comprises tank body (1), newel (2), oil exit pipe (12), air dissolved pump rising pipe (13), air dissolved pump water inlet pipe (14); Air dissolved pump rising pipe (13), air dissolved pump water inlet pipe (14), oil exit pipe (12) are fixed on tank body (1) bottom; The interior center fixation newel of described tank body (1) (2); Also be provided with mechanical support in the described tank body (1) and be fixed on tank body (1) interior unsteady oil recovery system and air-flotation system, it is characterized in that: the O type oil header (5) of described unsteady oil recovery system is nested with on newel (2) top, described O type oil header (5) connects splash pan (3) and cursory (4) respectively by pipe connecting radially, O type oil header (5) connects epimere rigidity transition pipeline (6) downwards, and epimere rigidity transition pipeline (6) connects hypomere rigidity transition pipeline (8) by rotary joint (7); Hypomere rigidity transition pipeline (8) connects oil exit pipe (12); The O type air supporting main (11) of described air-flotation system is nested with on newel (2) top, and described O type air supporting main (11) connects air supporting arm (10), evenly is furnished with some molten gas on the air supporting arm (10) and discharges head (9); Described O type air supporting main (11) is in O type oil header (5) bottom.
2. oil field extracted water highly-efficient treatment oil removing slurry tank according to claim 1, it is characterized in that: fixedly connected with air dissolved pump rising pipe (13) by pipe connecting in described O type air supporting main (11) bottom.
CN 201320274043 2013-05-20 2013-05-20 Efficient oil removing setting tank for processing oilfield produced water Active CN203229404U (en)

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Application Number Priority Date Filing Date Title
CN 201320274043 CN203229404U (en) 2013-05-20 2013-05-20 Efficient oil removing setting tank for processing oilfield produced water

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Application Number Priority Date Filing Date Title
CN 201320274043 CN203229404U (en) 2013-05-20 2013-05-20 Efficient oil removing setting tank for processing oilfield produced water

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CN203229404U true CN203229404U (en) 2013-10-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105838414A (en) * 2016-05-17 2016-08-10 中国石油天然气股份有限公司 Crude-oil-precipitation-tank aging-oil collecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105838414A (en) * 2016-05-17 2016-08-10 中国石油天然气股份有限公司 Crude-oil-precipitation-tank aging-oil collecting device

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