CN104389544A - Reducing dual tubing oil recovery wellhead casing head - Google Patents

Reducing dual tubing oil recovery wellhead casing head Download PDF

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Publication number
CN104389544A
CN104389544A CN201410686370.5A CN201410686370A CN104389544A CN 104389544 A CN104389544 A CN 104389544A CN 201410686370 A CN201410686370 A CN 201410686370A CN 104389544 A CN104389544 A CN 104389544A
Authority
CN
China
Prior art keywords
casing head
dual tubing
oil recovery
flat gate
reducing
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.)
Pending
Application number
CN201410686370.5A
Other languages
Chinese (zh)
Inventor
于冬
李宏
朱国亚
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.)
JIANGSU SHUANGHUI MACHINERY MANUFACTURING Co Ltd
Original Assignee
JIANGSU SHUANGHUI MACHINERY MANUFACTURING Co Ltd
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 JIANGSU SHUANGHUI MACHINERY MANUFACTURING Co Ltd filed Critical JIANGSU SHUANGHUI MACHINERY MANUFACTURING Co Ltd
Priority to CN201410686370.5A priority Critical patent/CN104389544A/en
Publication of CN104389544A publication Critical patent/CN104389544A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/04Casing heads; Suspending casings or tubings in well heads
    • E21B33/047Casing heads; Suspending casings or tubings in well heads for plural tubing strings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/14Obtaining from a multiple-zone well

Abstract

The invention discloses a reducing dual tubing oil recovery wellhead casing head. The reducing dual tubing oil recovery wellhead casing head comprises two oil pipes, a casing head cross, a Christmas tree, flat gate valves, a screw thread flange, a pressure gauge stop valve assembly and a throttle valve, wherein the casing head cross is connected with the integral flange Christmas tree through bolts, the inside of the integral flange Christmas tree is provided with a reducing dual tubing hanger, the two oil pipes are fixed at the position of the hanger to achieve oil recovery operation of two different areas, the hanger is further provided with a stop unit, and the stop unit has the function of stopping release of a lower portion casing during dismantling well cementation top connecting collars to guarantee underground safe operation. Due to the improvement that the integral flange connected Christmas tree is used for replacing a traditional Christmas tree structure, the overall sealing performance of the oil recovery wellhead unit is improved, two flat gate valves are used in parallel, therefore, when one of the gate valves of the integral flange connected Christmas tree is invalid, the other two gate valves can still be closed, and operation safety is improved.

Description

A kind of reducing formula dual tubing oil recovery casing head of well head
Technical field
The present invention relates to oil exploration technology field, be specifically related to a kind of reducing formula dual tubing oil recovery casing head of well head.
Background technology
Existing producing well head casing head unit every platform production wellhead in oil extraction in oil field process can only carry out oil producing operation to underground with an oil reservoir region, and oil producing operation can not be carried out to the oil reservoir block of two zoness of different in down-hole simultaneously, which results in oil production technology complexity, production operation efficiency is low, make troubles to engineering production operation.All need in a lot of flow chart in petroleum production engineering to use large-scale mobile device and engineering truck, use traditional producing well head casing head unit operating efficiency low, waste a large amount of financial resources and material resources.
Summary of the invention
(1) technical scheme that will solve
For solving the problem, the present invention proposes a kind of reducing formula dual tubing oil recovery casing head of well head that simultaneously can carry out oil producing operation to underground different rock-layers crude oil block.
(2) technical scheme
Of the present inventionly to be achieved through the following technical solutions: the present invention proposes a kind of reducing formula dual tubing oil recovery casing head of well head, comprise two oil pipes, casing head spool, production tree, flat gate valve, thread flange, stop valve for pressure gauge assembly and choke valve, described casing head spool is mounted on production tree port by bolt, a reducing dual tubing hanger is fixed with by the jackscrew assembly arranged in its side in described casing head spool, described two oil pipe socket joints are fixed in reducing dual tubing hanger, two double male joints are had at described reducing dual tubing hanger other end socket joint, described double male joint is connected in production tree, described casing head spool side is respectively provided with two flat gate valves, described thread flange is mounted on the end of the flat gate valve of casing head spool both sides, described pressure meter cut-off assembly is installed on the end of the flat gate valve of casing head spool side, also be respectively provided with a flat gate valve in the side of described production tree simultaneously, the end of described flat gate valve is respectively provided with a choke valve, pressure meter cut-off assembly is also provided with at the end of described production tree.
Preferably, described flat gate valve adopts flange to be connected, and junction is provided with sealing mat.
Preferably, the end of described thread flange is provided with the plug that thread coordinates installation.
Preferably, the end of described choke valve is provided with the plug that thread coordinates installation.
(3) beneficial effect
The present invention, relative to prior art, has following beneficial effect:
A kind of reducing formula dual tubing oil recovery casing head of well head that the present invention proposes, adopt reducing dual tubing hanger, can hang two 4.5 " sleeve pipe; two sleeve pipes are non-interference; simultaneously can carry out oil producing operation to underground different rock-layers crude oil block, hanger relies on suspension sleeve own wt to settle down and hangs sealing in addition, has supporting capacity large; easy for installation, seals the advantages such as reliable simultaneously.Hanger is also designed with stop device, has and prevents from unloading the well cementation landing joint function that releases of parts casing pipe at present, to ensure downhole safety operation.Production tree part have employed the structure design that integral flange connects, and compared with traditional production tree, has structure simple, easy for installation, compressive strength high, this improvement is conducive to the production efficiency improving oil field operation, improves the security performance of operation.Using integral flange to connect production tree replaces traditional this improvement of production tree structure to improve the overall sealing performance of this well head device for well production, even if certain 1 gate valve that integral flange connects production tree fails, we still can close other two, improve the security performance of operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A place of the present invention partial enlarged drawing.
1-oil pipe; 2-casing head spool; 3-production tree; 4-flat gate valve; 5-thread flange; 6-stop valve for pressure gauge assembly; 7-choke valve; 8-reducing dual tubing hanger; 9-double male joint; 10-jackscrew assembly; 51-plug; 4-1---flat gate valve; 4-2---flat gate valve; 4-3---flat gate valve; 4-4---flat gate valve; 4-5---flat gate valve; 4-6---flat gate valve; 6-1---stop valve for pressure gauge assembly; 6-2---stop valve for pressure gauge assembly; 6-3---stop valve for pressure gauge assembly; 7-1---choke valve; 7-2---choke valve.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As Figure 1-Figure 2, embodiments provide a kind of reducing formula dual tubing oil recovery casing head of well head, comprise two oil pipes 1, casing head spool 2, production tree 3, flat gate valve 4, thread flange 5, stop valve for pressure gauge assembly 6 and choke valve 7, described casing head spool 2 is mounted on production tree 3 port by bolt, a reducing dual tubing hanger 8 is fixed with by the jackscrew assembly 10 arranged in its side in described casing head spool 2, the effect of jackscrew assembly 10 prevents reducing dual tubing hanger 8 from moving up, jackscrew assembly 10 carries caulking gum part, good sealing can be realized.Described two oil pipe 1 socket joints are fixed in reducing dual tubing hanger 8, two double male joints 9 are had at described reducing dual tubing hanger 8 other end socket joint, described double male joint 9 is connected in production tree 3, described casing head spool 2 side is respectively provided with two flat gate valve 4-1, 4-2, 4-3, 4-4, described thread flange 5 is mounted on the flat gate valve 4-1 of casing head spool 2 both sides, the end of 4-4, described pressure meter cut-off assembly 6-1 is installed on the end of the flat gate valve 4-4 of casing head spool 2 side, also be respectively provided with a flat gate valve 4-5 in the side of described production tree 3 simultaneously, 4-6, described flat gate valve 4-5, the end of 4-6 is respectively provided with a choke valve 7-1, 7-2, pressure meter cut-off assembly 6-2 is also provided with at the end of described production tree 3, 6-3.
Wherein, described flat gate valve 4 adopts flange to be connected, and junction is provided with sealing mat; The end of described thread flange 5 is provided with thread and coordinates the plug 51 installed; The end of described choke valve 7 is provided with thread and coordinates the plug 51 installed.
In the above-described embodiments, casing head spool 2 is connected to integral flange production tree 3 by 16 M36 connecting bolts, realizes sealing by R46 gasket ring.It is be equivalent to 6 flat gate valves 4 be combined in together that integral flange to connect the design feature of production tree 3,6 gate valves are divided into three, upper, middle and lower ingredient, flat gate valve 4 controls to open and close by handwheel, and each handwheel controls the flat gate valve 4 that a vertical latus rectum is 65mm respectively.Integral flange connects the major avenues of approach that production tree 3 is oil producing operations, and oil producing operation gathers crude oil from down-hole 3000-5000 rice bran oil layer block, and crude oil is by two 4.5, and " oil pipe 1 inside is mined on the ground.Open 6 flat gate valves 4 in upper, middle and lower portion when oil producing operation, open 2 JLK65-35 choke valves 7-1,7-2, unload the plug 51 be connected to below JLK65-35 choke valve 7-1,7-2 on thread flange, connect and adopt cover pipeline crude oil extraction.The right and left that integral flange connects production tree 3 connects 2 JLK65-35 choke valves 7 respectively by 8 M27 bolts.The effect of stop valve for pressure gauge assembly 6 is the pressure of observation oil producing operation, and field operation personnel control the speed of recovering the oil by the reading of observed pressure table.Under needs lower going-into-well when instrument, the plug 51 at stop valve for pressure gauge assembly 6 place can also be unloaded, use drilling rod connecting downhole instrument, stretch into downhole tool by the vertical latus rectum of this well head device for well production to down-hole thus complete relevant operation procedure.
Can be found out by foregoing description, reducing formula dual tubing oil recovery casing head of well head of the present invention can hang the operation simultaneously of two oil pipes 1 simultaneously, substantially increases the operating efficiency of oil extraction in oil field field worker.The production tree part of this reducing formula dual tubing oil recovery casing head of well head adopts integral flange to connect production tree, has installation, use, feature easy to maintenance.This producing well head casing head unit can realize single well head by horizontal well drilling technology and carry out oil producing operation to the oil reservoir block of two, down-hole different directions, zones of different simultaneously, improves operating efficiency, reduces oil producing operation cost.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.

Claims (4)

1. a reducing formula dual tubing oil recovery casing head of well head, comprise two oil pipes (1), casing head spool (2), production tree (3), flat gate valve (4), thread flange (5), stop valve for pressure gauge assembly (6) and choke valve (7), it is characterized in that: described casing head spool (2) is mounted on production tree (3) port by bolt, a reducing dual tubing hanger (8) is fixed with by the jackscrew assembly (10) arranged in its side in described casing head spool (2), described two oil pipe (1) socket joints are fixed in reducing dual tubing hanger (8), two double male joints (9) are had at described reducing dual tubing hanger (8) other end socket joint, described double male joint (9) is connected in production tree (3), described casing head spool (2) side is respectively provided with two flat gate valves (4-1) (4-2) (4-3) (4-4), described thread flange (5) is mounted on the end of flat gate valve (4-1) (4-4) of casing head spool (2) both sides, described pressure meter cut-off assembly (6-1) is installed on the end of the flat gate valve (4-4) of casing head spool (2) side, also be respectively provided with a flat gate valve (4-5) (4-6) in the side of described production tree (3) simultaneously, the end of described flat gate valve (4-5) (4-6) is respectively provided with a choke valve (7-1) (7-2), pressure meter cut-off assembly (6-2) (6-3) is also provided with at the end of described production tree (3).
2. a kind of reducing formula dual tubing oil recovery casing head of well head according to claim 1, is characterized in that: described flat gate valve (4) adopts flange to be connected, and junction is provided with sealing mat.
3. a kind of reducing formula dual tubing oil recovery casing head of well head according to claim 1, is characterized in that: the end of described thread flange (5) is provided with thread and coordinates the plug (51) installed.
4. a kind of reducing formula dual tubing oil recovery casing head of well head according to claim 1, is characterized in that: the end of described choke valve (7) is provided with thread and coordinates the plug (51) installed.
CN201410686370.5A 2014-11-18 2014-11-18 Reducing dual tubing oil recovery wellhead casing head Pending CN104389544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410686370.5A CN104389544A (en) 2014-11-18 2014-11-18 Reducing dual tubing oil recovery wellhead casing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410686370.5A CN104389544A (en) 2014-11-18 2014-11-18 Reducing dual tubing oil recovery wellhead casing head

Publications (1)

Publication Number Publication Date
CN104389544A true CN104389544A (en) 2015-03-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107476780A (en) * 2017-10-13 2017-12-15 苏州优力克流体控制科技有限公司 A kind of monoblock type double tube valve body
CN111946289A (en) * 2020-09-08 2020-11-17 中国石油天然气股份有限公司 Multi-channel flow divider for cluster pipe wellhead
CN111946291A (en) * 2020-09-08 2020-11-17 中国石油天然气股份有限公司 Connecting device for inner channel of cluster pipe wellhead pipe cutting butt joint
CN111963094A (en) * 2020-09-08 2020-11-20 中国石油天然气股份有限公司 Cluster pipe two-gas co-production tubular column
CN112112596A (en) * 2020-09-21 2020-12-22 中国石油天然气集团有限公司 Double-gasket metal sealing oil pipe head
CN112523722A (en) * 2020-11-27 2021-03-19 徐小林 Wedge-shaped throttle valve structure capable of being mechanically sealed for gas injection and oil extraction well head of oil field
CN112554833A (en) * 2020-12-22 2021-03-26 江苏雄越石油机械设备制造有限公司 Wellhead oil production device
CN112647885A (en) * 2020-12-31 2021-04-13 江苏信得石油机械股份有限公司 Casing head for preventing leakage of oil field well mouth
CN113464090A (en) * 2021-08-10 2021-10-01 江苏益马机械有限公司 Combined production tree for production well

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107476780A (en) * 2017-10-13 2017-12-15 苏州优力克流体控制科技有限公司 A kind of monoblock type double tube valve body
CN111946289A (en) * 2020-09-08 2020-11-17 中国石油天然气股份有限公司 Multi-channel flow divider for cluster pipe wellhead
CN111946291A (en) * 2020-09-08 2020-11-17 中国石油天然气股份有限公司 Connecting device for inner channel of cluster pipe wellhead pipe cutting butt joint
CN111963094A (en) * 2020-09-08 2020-11-20 中国石油天然气股份有限公司 Cluster pipe two-gas co-production tubular column
CN112112596A (en) * 2020-09-21 2020-12-22 中国石油天然气集团有限公司 Double-gasket metal sealing oil pipe head
CN112523722A (en) * 2020-11-27 2021-03-19 徐小林 Wedge-shaped throttle valve structure capable of being mechanically sealed for gas injection and oil extraction well head of oil field
CN112554833A (en) * 2020-12-22 2021-03-26 江苏雄越石油机械设备制造有限公司 Wellhead oil production device
CN112647885A (en) * 2020-12-31 2021-04-13 江苏信得石油机械股份有限公司 Casing head for preventing leakage of oil field well mouth
CN112647885B (en) * 2020-12-31 2022-07-15 江苏信得石油机械股份有限公司 Casing head for preventing leakage of oil field well head
CN113464090A (en) * 2021-08-10 2021-10-01 江苏益马机械有限公司 Combined production tree for production well

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Application publication date: 20150304

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