CN104110245B - Hydrocyclone utilized underground oil-water separation device with power driven rotating blades - Google Patents

Hydrocyclone utilized underground oil-water separation device with power driven rotating blades Download PDF

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Publication number
CN104110245B
CN104110245B CN201410337885.4A CN201410337885A CN104110245B CN 104110245 B CN104110245 B CN 104110245B CN 201410337885 A CN201410337885 A CN 201410337885A CN 104110245 B CN104110245 B CN 104110245B
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oil
water
hydrocyclone
packer
central shaft
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CN201410337885.4A
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CN104110245A (en
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张苓
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Sino-Gas & Oil Technology Co Ltd
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Sino-Gas & Oil Technology Co Ltd
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Abstract

Disclosed is a hydrocyclone utilized underground oil-water separation device with power driven rotating blades. A tangent fluid inlet runs through the wall of an oil-string casing to be communicated with a pay zone. The top end of a centre output oil pipe extends out of a hydrocyclone, and an oil outlet is arranged above an oil reservoir packer and communicated with a sucking chamber of an oil extraction pump. The hydrocyclone, the rotating blades and the centre output oil pipe are arranged coaxially. A water injection hole communicated with a water injection target stratum is formed in the wall of the oil-string casing between an oil-water layer packer and a water layer packer. A lower cone of the hydrocyclone is communicated with a cyclone water outlet pipe, and outflow water of the cyclone water outlet pipe is pressured by an underground water-injection sand breaking pump assembly and then is injected into the water injection target stratum through the water injection hole via a water distributor. Before being extracted out of an oil well, oil of the oil reservoir is subjected to oil-water separation underground in advance; separated water is injected to the water injection target stratum directly, and residual oil with low water content is extracted out of the oil well; thus oil production cost is reduced greatly.

Description

The hydrocyclone downhole oil-water separation device of drive revolving vane
Technical field
The present invention relates to technical field of oil extraction equipment, especially relate to a kind of oil well profit with rotation oar cyclone pipe Separate water filling device.
Background technology
In oil exploitation industry, oil and water are in underground always association.Meanwhile, in existing oil exploitation technology, The water filling realizing oil reservoir to underground high-voltage reinjected water is usually needed to drive exploitation.In existing oil recovery technique, profit is produced together Outside well, then carry out the process of water-oil separating again;Still further inject water under high pressure to underground simultaneously, so cause the exploitation of oil to become This significantly rises.
Content of the invention
It is an object of the invention to designing a kind of hydrocyclone downhole oil-water separation of new drive revolving vane Device, solves the above problems.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of hydrocyclone downhole oil-water separation device of drive revolving vane, including production string, hydraulic cyclone Device, revolving vane, central shaft flowline, power set, cyclone outlet pipe, underground water-injection broken sand pump assembly, injection well downhole flow regulator, oil reservoir Packer, oil-water-layer packer and water layer packer;
Described hydrocyclone, described cyclone outlet pipe, described underground water-injection broken sand pump assembly and described injection well downhole flow regulator set Put within described production string, described hydrocyclone between described oil reservoir packer and described oil-water-layer packer, institute State injection well downhole flow regulator between described oil-water-layer packer and described water layer packer;
Described hydrocyclone includes top cylinder and bottom cone composition, and the wall of described top cylinder is provided with tangentially to enter Liquid mouth, described tangential direction mouth is communicated with oil-producing formation after the tube wall of described production string, and the centre of described top cylinder sets Put described revolving vane, the central shaft of described revolving vane is that hollow circular tube constitutes central shaft flowline, the top of described central shaft End is stretched out described hydrocyclone and is connected with power set;The bottom end opening of described central shaft flowline is under described revolving vane The shaft core position of side, described hydrocyclone is stretched out and above described oil reservoir packer in the top of described central shaft flowline The suction chamber being provided with oil-out with described oil extraction pump connects;Described hydrocyclone, described revolving vane, described central shaft are fuel-displaced Pipe is coaxially disposed;Described revolving vane and described central shaft flowline rotate under the drive of power set;
Have on the tube wall of the described production string between described oil-water-layer packer and described water layer packer and connect note The water filling port of water target zone, the bottom cone of described hydrocyclone is connected with described cyclone outlet pipe, and described cyclone goes out After the water outlet of water pipe is down through the broken sand pump assembly pressurization of described underground water-injection, again through described water filling port after described injection well downhole flow regulator Inject described water filling target zone.
The cone angle of the bottom cone of described hydrocyclone is 5 ° -25 °.
The principle of the present invention is as follows:
Oil reservoir mixed liquor tangentially enters the top cylinder of hydrocyclone, accelerates rotation, gently under the drive of revolving vane The crude oil of phase is gathered near axis of rotation, enters and adopt under the differential pressure action in oil extraction pump suction chamber with described hydrocyclone Oil pump suction chamber;Mixed liquor accelerates rotation in the Taper Pipe section (i.e. in the cone of bottom) of described hydrocyclone, close due to profit Degree is poor, and profit separates further, and oil is inhaled into central shaft flowline, and water and silt are larger due to density, are downwardly into water filling broken Husky pump general name, injects water filling target zone through injection well downhole flow regulator after pressurization.
Beneficial effects of the present invention can be summarized as follows:
1st, before oil is produced oil well, oil reservoir goes out liquid and carries out water-oil separating in down-hole first the present invention, with isolate Water is directly recycled into water filling target zone, and remaining low wet oil extraction is gone out outside well;Greatly reduce cost of winning.
2nd, the enforcement of the present invention makes separation water avoid sudden and violent oxygen, miscellaneous bacteria infection risk, alleviates separation water to floor treatment The corrosion failure of facility, decreases the outer discharge capacity of recovered water, alleviates environmental pollution.
Brief description
Fig. 1 is the structural representation of the present invention.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only in order to Explain the present invention, be not intended to limit the present invention.
A kind of hydrocyclone downhole oil-water separation device of drive revolving vane 3 as shown in Figure 1, including oil reservoir set Pipe 1, hydrocyclone 2, revolving vane 3, central shaft flowline 4, power set 5, cyclone outlet pipe 6, the broken sand of underground water-injection Pump assembly 7, injection well downhole flow regulator 8, oil reservoir packer 9, oil-water-layer packer 10 and water layer packer 11;Described hydrocyclone 2, described Cyclone outlet pipe 6, described underground water-injection broken sand pump assembly 7 and described injection well downhole flow regulator 8 are arranged within described production string 1, institute State hydrocyclone 2 between described oil reservoir packer 9 and described oil-water-layer packer 10, described injection well downhole flow regulator 8 is in described profit Between layer packer 10 and described water layer packer 11;Described hydrocyclone 2 includes top cylinder 12 and 13 groups of bottom cone Become, the wall of described top cylinder 12 is provided with tangential direction mouth 14, described tangential direction mouth 14 passes through the pipe of described production string 1 Communicate with oil-producing formation 15 after wall, the revolving vane 3 described in middle setting of described top cylinder 12, the center of described revolving vane 3 Axle is that hollow circular tube constitutes central shaft flowline 4, and described hydrocyclone 2 and power set 5 are stretched out in the top of described central shaft Connect;Shaft core position below described revolving vane 3 for the bottom end opening of described central shaft flowline 4, described central shaft is fuel-displaced The top of pipe 4 is stretched out described hydrocyclone 2 and is provided with oil-out 16 and described oil extraction pump above described oil reservoir packer 9 Suction chamber 17 connect;Described hydrocyclone 2, described revolving vane 3, described central shaft flowline 4 are coaxially disposed;Described rotation Turn blade 3 and described central shaft flowline 4 rotates under the drive of power set 5;Described oil-water-layer packer 10 and described water The water filling port 19 of connection water filling target zone 18, described waterpower are had on the tube wall of described production string 1 between layer packer 11 The bottom cone 13 of cyclone 2 is connected with described cyclone outlet pipe 6, and the water outlet of described cyclone outlet pipe 6 is down through described After underground water-injection broken sand pump assembly 7 pressurization, inject described water filling purpose through described water filling port 19 again by after described injection well downhole flow regulator 8 Layer 18.
In more preferred embodiment, the cone angle of the bottom cone 13 of described hydrocyclone 2 is 5 ° -25 °.
Before use, the oil reservoir perforating site of oil well bottom will be entered under described hydraulic cyclone pipe, insulated by described oil reservoir Fix with the segmentation of described water layer packer 11 between device 9, described oil-water-layer packer 10, form oil extraction pump spaced apart from each other simultaneously Suction chamber 17, cyclone pipe oil suction chamber 20 and injection chamber 21, the described tangential oil-in of hydrocyclone 2 and cyclone pipe oil suction chamber 20 Communicate with the oil-out of oil reservoir;The oil-out of described hydraulic cyclone pipe is communicated with oil extraction pump suction chamber 17;Described injection chamber and well The delivery port of lower water injecting pump broken sand assembly and water filling target zone 18 communicate;Start described oil extraction pump, aqueous former in described oil reservoir Oil enters described cyclone pipe oil suction chamber through the oil-out of oil reservoir, enters back into described tangential oil-in and enters described hydrocyclone Carry out water-oil separating in 2.Enter the wet crude of described hydraulic cyclone pipe, form whirlpool under the drive of described revolving vane 3 Whirlpool, under gravitational and centrifugal forces, profit is initially separated;Low-density oil upwards, to center assemble, finally from positioned at institute The described central shaft flowline 4 stating the top center of hydraulic cyclone pipe enters oil extraction pump suction chamber 17 by the oil-out on pipe top; Highdensity water to surrounding, assemble downwards, finally from the described rotation positioned at described eddy flow Taper Pipe (i.e. bottom cone 13) bottom Stream device outlet pipe 6 enters injection chamber 21 after broken sand pump assembly 7 boosting of described underground water-injection, then injects institute through injection well downhole flow regulator 8 The water filling target zone 18 stated.
Above procedure achieves the water-oil separating in down-hole for the wet crude of oil reservoir outflow, and the water that will obtain, and directly adds Pressure injection enters water filling layer, significantly improves oil recovery business efficiency.
Describe in detail the present invention above by specific and preferred embodiment, but those skilled in the art should be bright In vain, the invention is not limited in embodiment described above, all any modifications within the spirit and principles in the present invention, made, Equivalent etc., should be included within the scope of the present invention.

Claims (1)

1. a kind of drive revolving vane hydrocyclone downhole oil-water separation device it is characterised in that:Including production string, Hydrocyclone, revolving vane, central shaft flowline, power set, cyclone outlet pipe, underground water-injection broken sand pump assembly, join Hydrophone, oil reservoir packer, oil-water-layer packer and water layer packer;
Described hydrocyclone, described cyclone outlet pipe, described underground water-injection broken sand pump assembly and described injection well downhole flow regulator are arranged on Within described production string, described hydrocyclone, between described oil reservoir packer and described oil-water-layer packer, described is joined Hydrophone is between described oil-water-layer packer and described water layer packer;
Described hydrocyclone includes top cylinder and bottom cone composition, and the wall of described top cylinder is provided with tangential direction Mouthful, described tangential direction mouth is communicated with oil-producing formation after the tube wall of described production string, the middle setting of described top cylinder Described revolving vane, the central shaft of described revolving vane is that hollow circular tube constitutes central shaft flowline, the top of described central shaft Stretch out described hydrocyclone to be connected with power set;The bottom end opening of described central shaft flowline is below described revolving vane Shaft core position, the top of described central shaft flowline is stretched out described hydrocyclone and is set above described oil reservoir packer Oil-out is had to connect with the suction chamber of oil extraction pump;Described hydrocyclone, described revolving vane, described central shaft flowline are coaxial Setting;Described revolving vane and described central shaft flowline rotate under the drive of power set;
Have on the tube wall of the described production string between described oil-water-layer packer and described water layer packer and connect water filling mesh Layer water filling port, the bottom cone of described hydrocyclone connected with described cyclone outlet pipe, described cyclone outlet pipe Water outlet down through described underground water-injection broken sand pump assembly pressurization after, after described injection well downhole flow regulator again through described water filling port inject Described water filling target zone;The cone angle of the bottom cone of described hydrocyclone is 5 ° -25 °.
CN201410337885.4A 2014-07-16 2014-07-16 Hydrocyclone utilized underground oil-water separation device with power driven rotating blades Active CN104110245B (en)

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CN107208475B (en) * 2015-03-31 2019-06-28 韩国地质资源研究院 Manage one-piece type oil well fluid or oilfield fluid separator and its method
CN111206913A (en) * 2020-03-13 2020-05-29 中国科学院力学研究所 Underground double-vortex type rotational flow oil-water separator

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CN204041049U (en) * 2014-07-16 2014-12-24 北京中天油石油天然气科技有限公司 The hydrocyclone downhole oil-water separation device of drive revolving vane

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US6923275B2 (en) * 2001-01-29 2005-08-02 Robert Gardes Multi seam coal bed/methane dewatering and depressurizing production system
RU2284410C2 (en) * 2004-05-31 2006-09-27 Роберт Харрасович Фассахов Downhole pumping plant for oil production and water injection in formation
CN101745253B (en) * 2008-11-28 2011-08-31 北京中天油石油天然气科技有限公司 Oil-water cyclone separator
CA2665035C (en) * 2009-04-30 2017-02-28 Norman J. Mcallister A method and apparatus for separating downhole oil and water and reinjecting separated water
CN101793138B (en) * 2010-03-10 2013-06-26 大庆油田有限责任公司 Hydrocyclone and screw pump combined downhole oil-water separation method
CN103835693A (en) * 2014-03-27 2014-06-04 中国石油大学(华东) Instability prevention fine separation series type hydraulic cyclone oil-water separator

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CN204041049U (en) * 2014-07-16 2014-12-24 北京中天油石油天然气科技有限公司 The hydrocyclone downhole oil-water separation device of drive revolving vane

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Denomination of invention: Hydrocyclone utilized underground oil-water separation device with power driven rotating blades

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