CN207332859U - Fine and close oil exploitation separation control system - Google Patents

Abstract

A kind of fine and close oil exploitation separation control system, it is related to oil equipment technical field, it includes mining tubular column, sand removing separator and oil water separator, mining tubular column one end passes through safety joint and centralizer, hydraulic anchor connects, packer and pressure-guiding sand blower are sequentially connected with, the mining tubular column other end is connected by inlet tube with wire mesh demister, sand removing separator gas outlet is connected by gas-guide tube with gas-liquid second-stage separator, sand removing separator is divided into two liquid outlets, two liquid outlets are connected with catheter, drain pipe end is connected with liquid converter, liquid converter is connected with gas-liquid second-stage separator, gas-liquid second-stage separator is connected with gas collector, liquid converter is connected by oil water separator with grease second-stage separator.This densification oil exploitation separation control system has achieveed the purpose that to improve fine and close oil exploitation separative efficiency, has been adapted to large-scale promotion and use while ensure that fine and close oil exploitation quality.

Description

Fine and close oil exploitation separation control system

Technical field：

It the utility model is related to oil equipment technical field, and in particular to fine and close oil exploitation separation control system.

Background technology：

Fine and close oil refers to be clipped in or close in the compact reservoir of high-quality oil-generative assemblage, without extensive long-distance migration And the oil accumulation formed, it is the petroleum resources continuously distributed with oil source rock symbiosis or adjacent large area, reservoir lithology Main to include tight sand, compact limestone and carbonate rock, covering matrix permeability is less than 0.1mD, and individual well is without industry production naturally Energy.

Existing exploitation, separation to fine and close oil is all carried out separately, and is increased workload, is added working strength, into And reduce the yield of fine and close oil.

Utility model content：

The purpose of this utility model is to overcome above-mentioned the shortcomings of the prior art part, and provide a kind of fine and close oil Separation control system is exploited, it is simple in structure, easy to use, while ensureing fine and close oil exploitation quality, improves fine and close oil and opens Adopt separative efficiency.

In order to solve the problems existing in background technology, the utility model is to adopt the following technical scheme that：Including exploitation pipe Column, sand removing separator and oil water separator, mining tubular column one end are connected by safety joint with centralizer, and centralizer passes through connection Pipe is connected with hydraulic anchor, and hydraulic anchor is connected by connecting tube with packer, and packer is sprayed by centralizer and connecting tube with pilot Sand device connects, and the mining tubular column other end is connected by inlet tube with wire mesh demister, and liquid feed valve, silk are installed on inlet tube Net demister is installed in sand removing separator, and sand removing separator side wall is equipped with liquid level gauge, and sand removing separator gas outlet is by leading Tracheae is connected with gas-liquid second-stage separator, and sand removing separator is divided into two liquid outlets, and two liquid outlets are respectively that big flow goes out liquid Mouth and small flow liquid outlet, big flow liquid outlet and small flow liquid outlet go out liquid by big flow outlet pipe and small flow respectively Pipeline is connected with catheter, and big flow outlet valve and flowmeter are installed in big flow outlet pipe, is set in small flow outlet pipe There is small flowexit valve, the drain pipe end is connected with liquid converter, and liquid converter is gone out by liquid converter Gas port and outlet pipe are connected with gas-liquid second-stage separator, and gas-liquid second-stage separator is connected by outlet pipe and gas collector Connect, liquid converter is connected by liquid outlet and outlet pipe with oil water separator, and oil water separator passes through flowline and oil Water second-stage separator connects；Liquid feed valve, big flow outlet valve, small flowexit valve and liquid level gauge by conducting wire respectively with switch board Connection.

The flowmeter is located at the outlet end of big flow outlet valve.

The oil water separator connection number is at least the liquid converter of one, and each liquid converter corresponds to one Gas-liquid second-stage separator, each gas-liquid second-stage separator are connected with gas collector respectively.

Each liquid converter is connected by catheter with a sand removing separator；Each gas-liquid the second-order separation Device is connected by gas-guide tube with a sand removing separator；Each sand removing separator is all connected with a mining tubular column.

The beneficial effects of the utility model are that design is reasonable, and securely and reliably, the exploitation to fine and close oil and mask work are closed Two be one, and by control of two outlet pipes to fine and close oil stream amount, while ensure that fine and close oil exploitation quality, is reached The purpose of fine and close oil exploitation separative efficiency is improved, is adapted to large-scale promotion and use.

Brief description of the drawings：

Fig. 1 is the utility model internal structure schematic diagram.

Embodiment：

With reference to Fig. 1, the utility model specifically uses and mode is implemented as follows：Including mining tubular column 1, sand removing separator 11 and oil Separator 25,1 one end of mining tubular column are connected by safety joint 2 with centralizer 3, and centralizer 3 passes through connecting tube and hydraulic anchor 4 Connection, hydraulic anchor 4 are connected by connecting tube with packer 5, and packer 5 is connected by centralizer 3 and connecting tube with pressure-guiding sand blower 6 Connect, 1 other end of mining tubular column is connected by inlet tube 7 with wire mesh demister 9, and liquid feed valve 8, silk are installed on inlet tube 7 Net demister 9 is installed in sand removing separator 11, and 11 side wall of sand removing separator is equipped with liquid level gauge 10,11 outlet of sand removing separator Mouth 12 is connected by gas-guide tube 16 with gas-liquid second-stage separator 23, and sand removing separator 11 is divided to for two liquid outlets, two liquid outlets Respectively big flow liquid outlet 13 and small flow liquid outlet 20, big flow liquid outlet 13 and small flow liquid outlet 20 are respectively by big Flow outlet pipe 17 and small flow outlet pipe 19 are connected with catheter 26, and big flow is installed in big flow outlet pipe 17 and is gone out Mouth valve 14 and flowmeter 15, small flow outlet pipe 19 are equipped with small flowexit valve 18,26 end of catheter and liquid Body converter 22 connects, and liquid converter 22 passes through the gas outlet of liquid converter 22 and outlet pipe and gas-liquid second-stage separator 23 connections, gas-liquid second-stage separator 23 are connected by outlet pipe with gas collector 24, and liquid converter 22 passes through liquid outlet It is connected with outlet pipe with oil water separator 25, oil water separator 25 is connected by flowline with grease second-stage separator 21； Liquid feed valve 8, big flow outlet valve 14, small flowexit valve 18 and liquid level gauge 10 are connected with switch board 27 respectively by conducting wire.Institute The flowmeter 15 stated is located at the outlet end of big flow outlet valve 14.The oil water separator 25 connects number and is at least one Liquid converter 22, each liquid converter 22 correspond to a gas-liquid second-stage separator 23, and each gas-liquid second-stage separator 23 divides It is not connected with gas collector 24.Each liquid converter 22 is connected by catheter 26 and a sand removing separator 11 Connect；Each gas-liquid second-stage separator 23 is connected by gas-guide tube 16 with a sand removing separator 11；Each sand removing separator 11 It is all connected with a mining tubular column 1.

During fine and close oil exploitation separation control system work, one end of mining tubular column 1 is stretched into compact reservoir, utilizes pilot The chock pressure difference set packer 5 of sanding machine 6, anti-flushing well replace lyolysis sealed packer 5, take the side of upper body mining tubular column 1 step by step Formula, realizes that primary recovery tubing string 1 completes multistage pressure break, according to actual conditions, using High Pressure Difference K344 packers 5 across every sealing, The stress of mining tubular column 1 is optimized, improves construction safety reliability, meanwhile, using safety joint 2, reduce generation Intractability during contingency.

After mining tubular column 1 will produce, liquid feed valve 8 is opened, and fine and close oil enters sand removing separator 11, control from inlet tube 7 It is first time point that cabinet 27, which records current time point,.Since fine and close oil includes liquid, solid and gas, entering desanding point After device 11, solid deposits swim in solids in the bottom of sand removing separator 11, liquid substance under the influence of gravity In matter, that is, desanding work is completed, and wire mesh demister 9 is equipped with sand removing separator, and be arranged on gas-guide tube 16 and desanding point From the lower section of 11 junction of device, the densification oil of foam state is subjected to gas, liquid separation will pass through the wire mesh demister 9, Complete gas and the liquid separation of the first step.

Through after a period of time, the fine and close oil in sand removing separator 11 increases, switch board 27 can be aobvious according to liquid level gauge 10 The reading shown determines the volume of fine and close oil in sand removing separator 11, when the reading that liquid level gauge 10 is shown reaches the first default liquid level When, it was the second time point that switch board 27, which records current time point, when the reading that liquid level gauge 10 is shown reaches the second default liquid level When, it was the 3rd time point that switch board 27, which records current time point, and switch board 27, can according to the 3rd time point and first time point To determine that fine and close oil reaches second default liquid level the time it takes, judge whether the time is more than preset duration, according to judgement As a result determine still to use small flowmeter amount flow using Large flow flow, opened if using Large flow flow Big flow outlet valve 14, opens small flowexit valve 18 if using small flowmeter amount flow.

If the time is not more than preset duration, illustrates that fine and close oily Liquid output is higher, big flow outlet valve can be opened 14, ensure that fine and close oil will not overflow after entering sand removing separator 11 from sand removing separator 11, fine and close oil is constantly from exploitation pipe Sand removing separator 11 is entered by inlet tube 7 in column 1, the liquid portion during densification is oily is constantly flowed from big flow outlet pipe 17 Go out and complete discharge opeing, and flowmeter 15 can be with the Liquid output of the current oil well of continuous metering, you can is true according to the reading of flowmeter 15 The Liquid output of settled preceding oil well；If the time be greater that preset duration, then the fine and close oily Liquid output of explanation is relatively low, without opening big stream Measure outlet valve 14, it is only necessary to which the metering of oilwell produced fluid amount can be completed by opening small flowexit valve 18, open small flowexit valve 18, and according to the 3rd time point and the second time point, determine that fine and close oil reaches the second default liquid level institute from the first default liquid level The time of cost, in conjunction with the difference of the in sand removing separator 11 second default liquid level and the volume of the first default liquid level, you can take Obtain the average Liquid output of oil well during this period of time.

Gas after the separation of sand removing separator 11 enters gas-liquid second-stage separator 23 by gas-guide tube 16, by gas-liquid The gas of second-stage separator 23 is by secondary filter, into gas collector 24；Gas after the separation of sand removing separator 11 Liquid mixture is entered in liquid converter 22 by catheter 26, and the gas isolated in liquid converter 22 is become by liquid 22 gas outlet of parallel operation enters in gas-liquid second-stage separator 23, further into gas collector 24；Liquid converter 22 collects All liq flow into oil water separator 25 in, flow into oil water separator 25 liquid be oil water mixture, by water-oil separating Device 25 thoroughly removes water after removing water into grease second-stage separator 21, isolates pure densification oil.

In conclusion this densification oil exploitation separation control system design is reasonable, securely and reliably, by the exploitation to fine and close oil and Mask work is combined into one, and by control of two outlet pipes to fine and close oil stream amount, ensure that fine and close oil exploitation quality While, achieve the purpose that to improve fine and close oil exploitation separative efficiency, be adapted to large-scale promotion and use.

Claims (4)

1. a kind of fine and close oil exploitation separation control system, including mining tubular column（1）, sand removing separator（11）, oil water separator （25）And switch board（27）, it is characterised in that：Mining tubular column（1）One end passes through safety joint（2）With centralizer（3）Connection, is helped Positive device（3）Pass through connecting tube and hydraulic anchor（4）Connection, hydraulic anchor（4）Pass through connecting tube and packer（5）Connection, packer（5） Pass through centralizer（3）With connecting tube and pressure-guiding sand blower（6）Connection, the mining tubular column（1）The other end passes through inlet tube（7） With wire mesh demister（9）Connection, inlet tube（7）Upper installation liquid feed valve（8）, wire mesh demister（9）It is installed on sand removing separator （11）It is interior, sand removing separator（11）Side wall is equipped with liquid level gauge（10）, sand removing separator（11）Gas outlet（12）Pass through gas-guide tube （16）With gas-liquid second-stage separator（23）Connection, sand removing separator（11）It is divided into two liquid outlets, two liquid outlets are respectively big Flow liquid outlet（13）With small flow liquid outlet（20）, big flow liquid outlet（13）With small flow liquid outlet（20）Respectively by big Flow outlet pipe（17）With small flow outlet pipe（19）With catheter（26）Connection, big flow outlet pipe（17）Upper installation Big flow outlet valve（14）And flowmeter（15）, small flow outlet pipe（19）It is equipped with small flowexit valve（18）, it is described Catheter（26）End and liquid converter（22）Connection, liquid converter（22）Pass through liquid converter（22）Gas outlet and Outlet pipe and gas-liquid second-stage separator（23）Connection, gas-liquid second-stage separator（23）Pass through outlet pipe and gas collector （24）Connection, liquid converter（22）Pass through liquid outlet and outlet pipe and oil water separator（25）Connection, oil water separator （25）Pass through flowline and grease second-stage separator（21）Connection；Liquid feed valve（8）, big flow outlet valve（14）, small flow goes out Mouth valve（18）And liquid level gauge（10）By conducting wire respectively with switch board（27）Connection.

2. fine and close oil exploitation separation control system according to claim 1, it is characterised in that：Flowmeter（15）Positioned at big stream Measure outlet valve（14）Outlet end.

3. fine and close oil exploitation separation control system according to claim 1, it is characterised in that：Oil water separator（25）Connection Number is at least the liquid converter of one（22）, each liquid converter（22）A corresponding gas-liquid second-stage separator（23）, Each gas-liquid second-stage separator（23）Respectively with gas collector（24）Connection.

4. fine and close oil exploitation separation control system according to claim 3, it is characterised in that：Each liquid converter（22） Pass through catheter（26）With a sand removing separator（11）Connection；Each gas-liquid second-stage separator（23）Pass through gas-guide tube （16）With a sand removing separator（11）Connection；Each sand removing separator（11）It is all connected with a mining tubular column（1）.