CN205743870U - Submersible electric pump injection pipe post with oil water separator - Google Patents

Submersible electric pump injection pipe post with oil water separator Download PDF

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Publication number
CN205743870U
CN205743870U CN201620721860.9U CN201620721860U CN205743870U CN 205743870 U CN205743870 U CN 205743870U CN 201620721860 U CN201620721860 U CN 201620721860U CN 205743870 U CN205743870 U CN 205743870U
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China
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oil
water
electric pump
injection pipe
submersible electric
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CN201620721860.9U
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Chinese (zh)
Inventor
刘榧
蒋利平
成一
黄凯
周长江
臧克
臧克一
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Chengdu North Petroleum Exploration & Development Technology Ltd
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Chengdu North Petroleum Exploration & Development Technology Ltd
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Abstract

The utility model discloses the submersible electric pump injection pipe post with oil water separator, including a stay tube, prop up stay tube and be provided with the first packer, prop up stay tube lower end and be connected to submersible electric machine with oil and suction inlet successively, the lower end of suction inlet is connected with the input of electric pump, and electricity delivery side of pump is connected with cyclone separator, and in cyclone separator, upper side is provided with bypass pipe, bypass pipe is upward through the first packer, and arranges water injection pipe in the lower end of cyclone separator.Two kinds of techniques of re-injection after oil recovery separates can be realized with recovered water in same well simultaneously, decrease the lifting of output water, process and inject flow process, decrease the ground installations such as three phase separator, water injecting pump, pipeline, significantly reduce producing cost, improve oil production and oil production rate.

Description

Submersible electric pump injection pipe post with oil water separator
Technical field
This utility model relates to a kind of submersible electric pump tubing string, is specifically related to a kind of submersible electric pump with oil water separator and adopts Note tubing string.
Background technology
Along with continually developing of oil field, the energy of oil reservoir constantly declines, and oil well produces water will be more and more, need to enter profit The water separated is injected in stratum in order to supplementary stratum energy after separating by row again.The way of typical oilfield oil-extracting and water-injecting is: First utilize blowing energy or artificial lift mode to adopt on ground by production fluid in producing well, utilize ground oil gas Oil and gas and water in production fluid is left by water three-phase separator, and the oil separated is delivered to measuring station, multi-purpose station is carried out further Process and outer defeated, and the water separated is injected in water injection well by the pressurization of ground injection pump after treatment.Along with producing water Being continuously increased of amount, surface water processing equipment is increasing, and the expense that water processes is more and more higher, seriously constrains sending out of oil field Exhibition.
Utility model content
The technical problem to be solved is as being continuously increased of oil field aquifer yield, and surface water processing cost increases Add, seriously constrain the development in oil field, it is therefore intended that a kind of submersible electric pump injection pipe post with oil water separator is provided, can be same Shi Shixian same well oil extraction and downhole oil-water separation and water injection technology, significantly reduce producing cost, and can be effectively improved and adopt Oil output capacity.
This utility model is achieved through the following technical solutions:
With the submersible electric pump injection pipe post of oil water separator, including a stay tube, described stay tube is provided with the first packing Device, a stay tube lower end is connected to submersible electric machine with oil and suction inlet successively, and the lower end of described suction inlet is connected with the input of electric pump, electric pump Outfan be connected with cyclone separator, cyclone separator is provided with bypass pipe, and bypass pipe is upward through the first packer.
In actual mechanical process, pit shaft is made up of sleeve pipe and shaft bottom, is arranged in sleeve pipe by submersible electric pump injection pipe post, latent Oil electric pump injection pipe post includes extracting device of oil, submersible pump apparatus, oily-water seperating equipment.Extracting device of oil include stay tube, first Packer, bypass pipe, a stay tube acts primarily as fixing suspension effect, can be consequently used for fixing, hanging injection pipe post, and can arrange The parts of packer belong to the scope of this utility model protection;First packer is arranged on a stay tube, will stay tube and set The annular space of pipe is divided into upper and lower two parts, and is provided with cable and crossed the passage of bypass pipe, and a stay tube upper end is connected to the ground Face, lower end is connected with submersible electric machine with oil;The lower end of bypass pipe may connect to upper side in cyclone separator, through the first packing Device, bypass pipe upper port is connected with the annular space of a stay tube more than first packer and sleeve pipe.Submersible pump apparatus bag Including cable, submersible electric machine with oil, suction inlet and electric pump, cable is drawn from submersible electric machine with oil, draws through the first packer and along a stay tube To ground, for providing power to submersible electric machine with oil;Submersible electric machine with oil upper end is connected with a stay tube, and submersible electric machine with oil lower end is sequentially connected with suction Entrance and the input of electric pump, also can arrange protector between submersible electric machine with oil and suction inlet.Oily-water seperating equipment includes eddy flow Separator, the upper end of cyclone separator is connected with electricity delivery side of pump.
Under the drive of submersible electric machine with oil, electric pump runs up the production fluid in sleeve pipe and support pipe annular space through suction inlet In suction electric pump, gradually entering cyclone separator after supercharging, cyclone separator is by two kinds of non soluble liquids of profit in production fluid Density contrast, utilizes liquid high speed rotating in cyclone pipe to produce different centrifugal force and is separated from oil by water droplet, and oily is close Spending the less cyclone separator internal upper part that is positioned to be derived by bypass pipe, the density of water is relatively big, by cyclone separator under high pressure effect Lower port extrudes, thus realizes downhole oil-water separation.
Described cyclone separator is that one or more levels is in series.
According to actually used situation, by cyclone separator being set to one or more levels cascaded structure, can be effectively improved Oil-water separation treating capacity, is conducive to increasing pressure for water filling and oil recovery simultaneously, improves water filling and oil recovery efficiency.
The lower end of described cyclone separator is provided with ball-and-seat.
By arranging ball-and-seat as cyclone separator and with the safety-valve of upper-part in cyclone separator lower port, anti- Only bottom pressure is excessive causes moisture to flow backwards, and impact is adopted note efficiency, pollution injection pipe post internal unit and separated oil and divided, very To damaging injection pipe post equipment.
Described ball-and-seat lower end is provided with water injection pipe, and described water injection pipe is provided with the second packer and production layer and water filling layer is divided Separate.
Second packer acts primarily as the effect by producing layer and the packing of water filling layer, and convenient oil recovery and water filling work.By eddy flow The moisture that separator separates is pressed into shaft bottom water filling layer through water injection pipe, thus realizes same well oil extraction, oil-water separation and water filling work, Both decrease the lifting of output water, processed and injected flow process and equipment, significantly reduce producing cost;And by production fluid point From moisture inject stratum and supplement energy, keep producing stressor layer, recovery ratio and rate of oil production can be effectively improved.
The lower end of described water injection pipe is sequentially connected with screen casing, sand sediment pipe and plug.
Water owing to this utility model carries out same well oil extraction and oil-water separation and water injection technology, after cyclone separator separates Matter is close with the water quality of downhole formation, it is not necessary to carries out process through complicated water treatment technology and can be directly injected into water filling layer, pole The earth reduces cost, improves oil recovery efficiency.By being sequentially connected with screen casing, sand sediment pipe and plug in water injection pipe lower port, screen casing is used In intercepting the solid particle injected in water, sand sediment pipe and plug are used for precipitating solid particle, can be effectively prevented in injection water Solid particle is deposited in pit shaft.
This utility model compared with prior art, has such advantages as and beneficial effect:
1, this utility model is with the submersible electric pump injection pipe post of oil water separator, can realize adopting in same well simultaneously Oil and downhole oil-water separation and water injection technology, decrease the lifting of output water, process and inject flow process, decrease three phase separation The ground installations such as device, water injecting pump, pipeline, significantly reduce producing cost;
2, this utility model is with the submersible electric pump injection pipe post of oil water separator, injects ground by the moisture separated in production fluid The supplementary energy of layer, keeps producing stressor layer, can be effectively improved recovery ratio and rate of oil production;
3, this utility model is with the submersible electric pump injection pipe post of oil water separator, and simple in construction is easy to operate, safeguards into This is low.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by this utility model embodiment, constitutes the one of the application Part, is not intended that the restriction to this utility model embodiment.In the accompanying drawings:
Fig. 1 is this utility model structural representation.
The parts title of labelling and correspondence in accompanying drawing:
1-sleeve pipe, 2-props up stay tube, 3-cable, 4-the first packer, 5-submersible electric machine with oil, 6-protector, 7-suction inlet, 8-electricity Pump, 9-cyclone separator, 10-ball-and-seat, 11-the second packer, 12-water injection pipe, 13-screen casing, 14-sand sediment pipe, 15-bypasses Pipe, 16-plug, 17-water filling layer, 18-produces layer.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and explanation thereof are only used for explaining this Utility model, is not intended as restriction of the present utility model.
Embodiment
As it is shown in figure 1, pit shaft is made up of sleeve pipe 1 and shaft bottom, the submersible electric pump injection pipe post with oil water separator is pacified Being contained in sleeve pipe 1, the submersible electric pump injection pipe post with oil water separator includes a stay tube 2, and the middle part of stay tube 2 outer wall sets There is the first packer 4, for mechanical packer, the annular space of a stay tube 2 and sleeve pipe 1 is divided into upper and lower two parts.Prop up stay tube The upper end of 2 is connected to ground, and the lower end of a stay tube 2 is sequentially connected with submersible electric machine with oil 5, protector 6, suction inlet 7, is inverted electric pump 8 and Primary cyclone 9, electric pump 8 has oil pumping, supercharging oil transportation and pressurized water injection effect, especially when earth's surface production layer is shallower, increases Pressure injection water is less to the requirement of electric pump supercharging.Cyclone separator 9 internal upper part side is provided with bypass pipe 15, the port of export of bypass pipe 15 Through the first packer 4, and it is connected with a stay tube 2 of the first packer more than 4 and the annular space of sleeve pipe 1.Cable 3 is from latent Oil motor 5 is drawn, and causes ground through the first packer 4 and along a stay tube 2, for providing power to submersible electric machine with oil 5.One-level Cyclone separator 9 lower end is sequentially connected with ball-and-seat 10 and water injection pipe 12, and in the middle part of water injection pipe 12, exterior wall is provided with the second packer 11, for water-swelling packer, packing element independently expands at chance water and insulates stratum, and the second packer 11 will produce layer 18 and water filling Layer 17 separates.The lower end of water injection pipe 12 connects screen casing 13, and for punching screen casing, the lower port of screen casing 13 is sequentially provided with sand sediment pipe 14 With plug 16.In figure, arrow represents that liquid flows to.
Above-described detailed description of the invention, is entered the purpose of this utility model, technical scheme and beneficial effect One step describes in detail, be it should be understood that and the foregoing is only detailed description of the invention of the present utility model, is not used to limit Fixed protection domain of the present utility model, all within spirit of the present utility model and principle, any amendment, the equivalent made are replaced Change, improvement etc., within should be included in protection domain of the present utility model.

Claims (5)

1., with the submersible electric pump injection pipe post of oil water separator, including a stay tube (2), described stay tube (2) is provided with first Packer (4), stay tube (2) lower end sets submersible electric machine with oil (5) and suction inlet (7) successively, it is characterised in that described suction inlet (7) Lower end be connected with the input of electric pump (8), the outfan of electric pump (8) is connected with cyclone separator (9), cyclone separator (9) Being provided with bypass pipe (15), bypass pipe (15) is upward through the first packer (4).
Submersible electric pump injection pipe post with oil water separator the most according to claim 1, it is characterised in that described eddy flow Separator (9) is that one or more levels is in series.
Submersible electric pump injection pipe post with oil water separator the most according to claim 1, it is characterised in that described eddy flow The lower end of separator (9) is provided with ball-and-seat (10).
Submersible electric pump injection pipe post with oil water separator the most according to claim 3, it is characterised in that described single current Valve (10) lower end is provided with water injection pipe (12), and water injection pipe (12) is provided with the second packer (11) will produce layer (18) and water filling layer (17) separate.
Submersible electric pump injection pipe post with oil water separator the most according to claim 4, it is characterised in that described water filling The lower end of pipe (12) is sequentially connected with screen casing (13), sand sediment pipe (14) and plug (16).
CN201620721860.9U 2016-07-11 2016-07-11 Submersible electric pump injection pipe post with oil water separator Active CN205743870U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108756847A (en) * 2018-05-27 2018-11-06 中国海洋石油集团有限公司 Water-oil separating single fighter double pump injection and extraction system before a kind of pump
CN109209249A (en) * 2018-10-16 2019-01-15 中国海洋石油集团有限公司 A kind of flow string, drilling tool and producing well
CN109252853A (en) * 2017-07-12 2019-01-22 中国石油天然气股份有限公司 A kind of downhole oil-water separation single-well injection-production system and method
CN110295056A (en) * 2019-07-26 2019-10-01 中国海洋石油集团有限公司 A kind of water-oil separating tubular type electric field demulsification cyclone separator
CN110513082A (en) * 2018-05-21 2019-11-29 中国石油化工股份有限公司 A kind of motor protecter and the tubing string comprising it
CN110617050A (en) * 2019-10-15 2019-12-27 闫波 Gas well underground gas-liquid separate production device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109252853A (en) * 2017-07-12 2019-01-22 中国石油天然气股份有限公司 A kind of downhole oil-water separation single-well injection-production system and method
CN110513082A (en) * 2018-05-21 2019-11-29 中国石油化工股份有限公司 A kind of motor protecter and the tubing string comprising it
CN108756847A (en) * 2018-05-27 2018-11-06 中国海洋石油集团有限公司 Water-oil separating single fighter double pump injection and extraction system before a kind of pump
CN108756847B (en) * 2018-05-27 2020-09-01 中国海洋石油集团有限公司 Oil-water separation unit double-pump injection-production system before pump
CN109209249A (en) * 2018-10-16 2019-01-15 中国海洋石油集团有限公司 A kind of flow string, drilling tool and producing well
CN110295056A (en) * 2019-07-26 2019-10-01 中国海洋石油集团有限公司 A kind of water-oil separating tubular type electric field demulsification cyclone separator
CN110617050A (en) * 2019-10-15 2019-12-27 闫波 Gas well underground gas-liquid separate production device

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