CN204152489U - CO2 drives casting and dragging free stratification injection allocator - Google Patents

CO2 drives casting and dragging free stratification injection allocator Download PDF

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Publication number
CN204152489U
CN204152489U CN201420539758.8U CN201420539758U CN204152489U CN 204152489 U CN204152489 U CN 204152489U CN 201420539758 U CN201420539758 U CN 201420539758U CN 204152489 U CN204152489 U CN 204152489U
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CN
China
Prior art keywords
working chamber
central tube
urceolus
top connection
mobile piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420539758.8U
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Chinese (zh)
Inventor
张宏录
张龙胜
张庆华
熊炜
张建
俞亮亮
徐宁蔚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Original Assignee
China Petroleum and Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp filed Critical China Petroleum and Chemical Corp
Priority to CN201420539758.8U priority Critical patent/CN204152489U/en
Application granted granted Critical
Publication of CN204152489U publication Critical patent/CN204152489U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of CO 2drive casting and dragging free stratification injection allocator.It comprises top connection, central tube and lower contact, and top connection and lower contact are tightly connected with the two ends up and down of central tube respectively; On central tube, cover has urceolus, and the two ends up and down of urceolus are tightly connected with top connection and lower contact respectively, forms a working chamber between urceolus and central tube, top connection, lower contact; The bottom of working chamber is provided with mobile piston, and seal respectively between the contact surface of mobile piston and urceolus and central tube and contact, working chamber is divided into upper working chamber and lower working chamber by mobile piston; Spring is provided with in upper working chamber.Being provided with nozzle carrier in inner chamber bottom central tube, the tube wall of central tube being provided with the opening for being communicated with lower working chamber by nozzle; The barrel of urceolus is provided with gas outlet, the outer wall of central tube is provided with a groove.The utility model is provided with a throttle mechanism and secondary pressure governor motion, and automatic pressure regulation, realizes casting and dragging free.

Description

CO2 drives casting and dragging free stratification injection allocator
Technical field
The utility model belongs to oil exploitation underground equipment, relates to a kind of CO 2drive casting and dragging free stratification injection allocator.
Background technology
Artificial recharge or gas injection is generally needed to supplement stratum energy in the development process in oil field.But for water sensitivity oil field, waterflooding development effect is bad, select to adopt CO 2drive gas injecting mining, to keep stratum energy.
For non-homogeneity oil field, at CO 2during injection, because stratum exists permeability contrast, according to general injection mode, cause some layer of note not entered, interlayer contradiction is given prominence to, and injection efficiency is not high.Therefore, need to adopt CO 2layering injection technique, improves the development effectiveness in oil field.
CO conventional at present 2layering injection string is primarily of packer and distributor composition, and the corresponding implanted layer of distributor, valve realizes layering and injects.When needing adjustment injection rate, adopt wire Launching and Bailing injection allocation blanking plug, at replaced on ground valve.This CO 2layering injection string Problems existing is complicated construction technique, because need dropping-fishing test repeatedly during the allotment of multilayer zonal flow rate, adds time and the difficulty of job execution.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of CO 2drive casting and dragging free stratification injection allocator, it and packer form CO 2layering injection string, had both met the requirement of multi-zone flow regulating amount, can realize again casting and dragging free test, needs repeatedly a difficult problem for dropping-fishing test, finally realize the Efficient Development in oil field when solving the allotment of multilayer zonal flow rate.
CO of the present utility model 2drive casting and dragging free stratification injection allocator, comprise top connection, central tube and lower contact, it is characterized in that: described top connection and lower contact are tightly connected with the two ends of central tube respectively;
On described central tube, cover has a urceolus, and the two ends of described urceolus are tightly connected with top connection and lower contact respectively, forms a working chamber between described urceolus and central tube, top connection, lower contact;
The bottom of described working chamber is provided with a mobile piston, and described mobile piston contacts with sealing respectively between urceolus and central tube, and working chamber is divided into upper working chamber and lower working chamber by described mobile piston; Be provided with spring in described upper working chamber, the two ends of described spring are against between mobile piston and top connection; Described mobile piston vertically can move up and down along working chamber under the effect of thrust gas and spring thrust;
Being provided with nozzle carrier in inner chamber bottom described central tube, described nozzle carrier is provided with nozzle, the tube wall of described central tube being provided with the opening for being communicated with lower working chamber by nozzle;
The barrel of described urceolus is provided with gas outlet, the outer wall of described central tube is provided with one and can arrives groove for being communicated with the groove of upper working chamber and lower working chamber when described mobile piston moves up, and reduce the opening of gas outlet gradually;
When described mobile piston arrives groove, described gas can arrive gas outlet through the inner chamber of the inner chamber of central tube, nozzle carrier, nozzle, opening, lower working chamber, groove, upper working chamber in order.
Described top connection and be respectively arranged with sealing ring between lower contact and central tube contact surface.
Sealing ring is respectively arranged with between described mobile piston and urceolus and central tube.
Described urceolus and be respectively arranged with sealing ring between top connection and the contact surface of lower contact.
The utility model has the advantage of: traditional stratification injection allocator is throttle mechanism (nozzle) for once, the utility model is provided with a throttle mechanism and secondary pressure governor motion, and automatic pressure regulation, operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
With detailed description of the invention, the utility model is described further with reference to the accompanying drawings below.
A kind of CO 2drive casting and dragging free stratification injection allocator, comprise top connection 1, central tube 2 and lower contact 3, described top connection 1 and lower contact 3 are tightly connected with the two ends up and down of central tube 2 respectively; Described top connection 1 and be respectively arranged with sealing ring between lower contact 3 and central tube 2 contact surface.
On described central tube 2, cover has a urceolus 04, and the two ends up and down of described urceolus 04 are tightly connected respectively and between top connection 1 and lower contact 3, are respectively arranged with sealing ring between described urceolus 04 and the contact surface of top connection 1 and lower contact 3.
A working chamber is formed between described urceolus 04 and central tube 2, top connection 1, lower contact 3;
The bottom of described working chamber is provided with a mobile piston 06, seals respectively and contacts, be provided with sealing ring between described mobile piston 06 and the contact surface of urceolus 04 and central tube 2 between the contact surface of described mobile piston 06 and urceolus 04 and central tube 2.
Working chamber is divided into upper working chamber 09 and lower working chamber 08 by described mobile piston 06; Be provided with spring 05 in described upper working chamber 09, one end of described spring 05 is against the end face of mobile piston 06, and one end is against the bottom surface of top connection 1; Described mobile piston 06 vertically can move up and down along working chamber under the effect of thrust gas and spring 05 thrust;
Being provided with nozzle carrier 07 in inner chamber bottom described central tube 2, described nozzle carrier 07 is provided with nozzle 071, the tube wall of described central tube 02 being provided with the opening 021 for being communicated with lower working chamber 08 by nozzle 071;
The barrel of described urceolus 04 is provided with gas outlet 041, the outer wall of described central tube 2 is provided with a groove 022, described mobile piston 06 can arrive groove 022 when moving up, and allows gas from working chamber 09 groove 022 arrival, and reduces the opening of gas outlet 041 gradually;
When described mobile piston 06 arrives groove 022, described gas can arrive gas outlet 041 through the inner chamber of the inner chamber of central tube 2, nozzle carrier 07, nozzle 071, opening 021, lower working chamber 08, groove 022, upper working chamber 09 in order.
When gas inject pressure raises, mobile piston 06 moves upward, and upper working chamber volume 08 reduces, and gas outlet 041 opening reduces, and the gas flow entering stratum remains unchanged;
When gas inject pressure reduces, mobile piston 06 moves downward under the active force of spring 05, and upper working chamber volume 08 increases, and gas outlet 041 opening increases, and the gas flow entering stratum remains unchanged.

Claims (4)

1. a CO 2drive casting and dragging free stratification injection allocator, comprise top connection (1), central tube (2) and lower contact (3), it is characterized in that: described top connection (1) and lower contact (3) are tightly connected with the two ends of central tube (2) respectively;
The upper cover of described central tube (2) has a urceolus (04), and the two ends of described urceolus (04) are tightly connected with top connection (1) and lower contact (3) respectively, between described urceolus (04) and central tube (2), top connection (1), lower contact (3), form a working chamber;
The bottom of described working chamber is provided with a mobile piston (06), described mobile piston (06) contacts with sealing respectively between urceolus (04) and central tube (2), and working chamber is divided into upper working chamber (09) and lower working chamber (08) by described mobile piston (06); Be provided with spring (05) in described upper working chamber (09), the two ends of described spring (05) are against between mobile piston (06) and top connection (1); Described mobile piston (06) vertically can move up and down along working chamber under the effect of thrust gas and spring (05) thrust;
Nozzle carrier (07) is provided with in the inner chamber of described central tube (2) bottom, described nozzle carrier (07) being provided with nozzle (071), the tube wall of described central tube (02) being provided with the opening (021) for being communicated with lower working chamber (08) by nozzle (071);
The barrel of described urceolus (04) is provided with gas outlet (041), the outer wall of described central tube (2) is provided with one for being communicated with the groove (022) of upper working chamber (09) and lower working chamber (08), described mobile piston (06) can arrive groove (022) when moving up, and reduces the opening of gas outlet (041) gradually;
When described mobile piston (06) arrives groove (022), described gas can arrive gas outlet (041) through the inner chamber of the inner chamber of central tube (2), nozzle carrier (07), nozzle (071), opening (021), lower working chamber (08), groove (022), upper working chamber (09) in order.
2. CO according to claim 1 2drive casting and dragging free stratification injection allocator, it is characterized in that: described top connection (1) and be respectively arranged with sealing ring between lower contact (3) and central tube (2) contact surface.
3. CO according to claim 1 2drive casting and dragging free stratification injection allocator, it is characterized in that: between described mobile piston (06) and urceolus (04) and central tube (2), be respectively arranged with sealing ring.
4. CO according to claim 1 2drive casting and dragging free stratification injection allocator, it is characterized in that: between the contact surface of described urceolus (04) and top connection (1) and lower contact (3), be respectively arranged with sealing ring.
CN201420539758.8U 2014-09-19 2014-09-19 CO2 drives casting and dragging free stratification injection allocator Expired - Fee Related CN204152489U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420539758.8U CN204152489U (en) 2014-09-19 2014-09-19 CO2 drives casting and dragging free stratification injection allocator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420539758.8U CN204152489U (en) 2014-09-19 2014-09-19 CO2 drives casting and dragging free stratification injection allocator

Publications (1)

Publication Number Publication Date
CN204152489U true CN204152489U (en) 2015-02-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420539758.8U Expired - Fee Related CN204152489U (en) 2014-09-19 2014-09-19 CO2 drives casting and dragging free stratification injection allocator

Country Status (1)

Country Link
CN (1) CN204152489U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113216914A (en) * 2021-06-09 2021-08-06 门万龙 Layered injection allocation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113216914A (en) * 2021-06-09 2021-08-06 门万龙 Layered injection allocation device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150211

Termination date: 20170919

CF01 Termination of patent right due to non-payment of annual fee