CN202970594U - Wellhead device special for oil field fracturing - Google Patents

Wellhead device special for oil field fracturing Download PDF

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Publication number
CN202970594U
CN202970594U CN 201220714579 CN201220714579U CN202970594U CN 202970594 U CN202970594 U CN 202970594U CN 201220714579 CN201220714579 CN 201220714579 CN 201220714579 U CN201220714579 U CN 201220714579U CN 202970594 U CN202970594 U CN 202970594U
Authority
CN
China
Prior art keywords
casing
wellhead
way
oil
flange
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
CN 201220714579
Other languages
Chinese (zh)
Inventor
綦耀升
徐庆东
徐密
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.)
Shandong Linqu Qiancheng Petroleum Machinery Co Ltd
Original Assignee
Shandong Linqu Qiancheng Petroleum Machinery 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 Shandong Linqu Qiancheng Petroleum Machinery Co Ltd filed Critical Shandong Linqu Qiancheng Petroleum Machinery Co Ltd
Priority to CN 201220714579 priority Critical patent/CN202970594U/en
Application granted granted Critical
Publication of CN202970594U publication Critical patent/CN202970594U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a fracturing wellhead specially used in conventional oil and gas well sealing fracturing construction in oil fields, particularly to a wellhead device special for oil field fracturing. The wellhead device comprises a head gate and a casing cross joint and a small cross joint which are connected at two ends of the head gate, wherein a wellhead flange of the casing cross joint is connected with the head gate through a short lifting connecting pipe, an end face flange of the casing cross joint is connected with a casing cross joint valve, an upper flange is arranged at the butt joint end of the short lifting connecting pipe and the casing cross joint, and an oil tube threaded buckle is arranged on the inner cavity wall of the upper flange of the short lifting connecting pipe. By means of the wellhead device special for fracturing, operation and construction time can be reduced, and the workload for dismounting and replacing the wellhead can be greatly reduced.

Description

A kind of oil field compression fracture Special wellhead device
Technical field
The utility model relates to special-purpose fracture well head in the conventional oil in a kind of oil field, gas well card envelope pressing crack construction, is a kind of oil field compression fracture Special wellhead device specifically.
Technical background
At present, oil and gas wells in oil fields is conventional to be blocked when sealing pressing crack construction, needs to install high pressure resistant wellhead assembly, and this wellhead assembly is still the conventional structure design, and volume is large, quality is heavy, installation is wasted time and energy, and affects construction period; After installing, well head is high, makes troubles for the job execution personnel; Careless manipulation easily damages well head, brings potential safety hazard to construction; And manufacturing cost is high.Therefore, more need in pressing crack construction a kind of not only easy for installation, volume is little, quality is light, facilitate well head construction but also high voltage bearing device for fracturing wellhead.
Summary of the invention
The purpose of this utility model be to provide a kind of easy for installation, volume is little, quality is light, facilitate well head construction high voltage bearing oil field compression fracture Special wellhead device again, is mainly used in conventional gas and oil well card envelope pressing crack construction.
For achieving the above object, the utility model adopts following technical scheme:
A kind of oil field compression fracture Special wellhead device described in the utility model comprises master valve, is connected to four-way junction of casing and the little four-way at master valve two ends, it is characterized in that: the wellhead flange of described four-way junction of casing connects master valve by promoting nipple, the end face flange of four-way junction of casing is connected with the four-way junction of casing gate, the butt end of described lifting nipple and four-way junction of casing is provided with upper flange plate, is provided with the tubing round thread button on the upper flange plate internal chamber wall of lifting nipple.
The two ends of master valve connect little four-way and promote nipple by union; The four-way junction of casing gate is connected on the end face flange of four-way junction of casing by union.
Be connected with pressure meter by little four-way gate on described little four-way.
After adopting technique scheme, do not establish the tubing hanger structure in four-way junction of casing inside, lower end, in well, the pressing crack construction tubing string directly is connected through tubing round thread with well up flange, and safety factor is higher; Simple in structure, lightweight, quick and easy for installation, high pressure resistant, practical.Use this Special wellhead device can reduce the job execution time, and greatly reduce the workload that changes well head.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
The specific embodiment
As shown in Figure 1, a kind of oil field compression fracture Special wellhead device described in the utility model comprises master valve 15, is connected to four-way junction of casing 6 and the little four-way 11 at master valve 15 two ends, the wellhead flange of described four-way junction of casing 6 connects master valve 15 by promoting nipple 10, the end face flange of four-way junction of casing 6 is connected with four-way junction of casing gate 4, described lifting nipple 10 is provided with upper flange plate with the butt end of four-way junction of casing 6, is provided with tubing round thread button 19 on upper flange plate 8 internal chamber walls of lifting nipple 10.
The two ends of described master valve 15 connect little four-way 11 and promote nipple 10 by union 3; Four-way junction of casing gate 4 is connected on the end face flange of four-way junction of casing 6 by union.
Be connected with pressure meter 13 by little four-way gate 16 on described little four-way 11.
This wellhead assembly general arrangement comprises three parts from top to bottom:
First is the super-pressure section, namely little four-way 11 and little four way valve 16 ingredients.Main Function shows oil pressure for construction during blowout prevention after completing.
Second portion is the super-pressure section, i.e. master valve 15 and upper flange plate 8 and lifting short circuit 10 ingredients.Main Function is that the well head in pressing crack construction process is controlled.
Third part is bushing four-way section, i.e. four-way junction of casing 6 and four-way junction of casing gate 4 ingredients.Its Main Function is the coordinative construction well-flushing, and the balance pump truck is tied weighing apparatus use.Four-way junction of casing gate 4 adopts plug valve, and switch is convenient and swift.
Four-way junction of casing 6 all adopts high-pressure pipe connector 3 to be connected with top and the bottom, little four-way 11 with little four-way gate 16 with four-way junction of casing gate 4, master valve 15.
The using method of this pressure break Special wellhead device is achieved in that
1. the mounting sleeve four-way 6: select corresponding casing diameter variable pipe nipple 1 according to casing size, be connected with four-way junction of casing 6 lower end casing threads mouths, tighten.
2. fracturing tubing string in the well: be lowered to fracturing string precalculated position to the well, then the tubing round thread button 19 of fracturing string uphole end screw thread with upper flange plate 8 internal chamber walls directly be connected, upper flange plate 8 is connected by 12 Special wellhead screws with four-way junction of casing 6.
3. use union 3, four way valve 4, total valve 15, little four-way 11, four way valve 16 are connected.
4. the use union, connect pressure meter total 13 and stop valve 14.
All connect as shown in Figure 1, change follow-up fracturing work after completing over to.
Must guarantee master valve 15 standard-sized sheets during open flow after pressure break, control open flows with little four way valve 16 or stop valve 14.

Claims (3)

1. oil field compression fracture Special wellhead device, comprise master valve (15), be connected to four-way junction of casing (6) and the little four-way (11) at master valve (15) two ends, it is characterized in that: the wellhead flange of described four-way junction of casing (6) connects master valve (15) by promoting nipple (10), the end face flange of four-way junction of casing (6) is connected with four-way junction of casing gate (4), described lifting nipple (10) is provided with upper flange plate (8) with the butt end of four-way junction of casing (6), be provided with tubing round thread button (19) on upper flange plate (8) internal chamber wall of lifting nipple (10).
2. a kind of oil field compression fracture Special wellhead device according to claim 1 is characterized in that: the two ends of master valve (15) connect little four-way (11) and promote nipple (10) by union (3); Four-way junction of casing gate (4) is connected on the end face flange of four-way junction of casing (6) by union.
3. a kind of oil field compression fracture Special wellhead device according to claim 1 and 2, is characterized in that: is connected with pressure meter (13) by little four-way gate (16) on described little four-way (11).
CN 201220714579 2012-12-22 2012-12-22 Wellhead device special for oil field fracturing Expired - Fee Related CN202970594U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220714579 CN202970594U (en) 2012-12-22 2012-12-22 Wellhead device special for oil field fracturing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220714579 CN202970594U (en) 2012-12-22 2012-12-22 Wellhead device special for oil field fracturing

Publications (1)

Publication Number Publication Date
CN202970594U true CN202970594U (en) 2013-06-05

Family

ID=48511681

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220714579 Expired - Fee Related CN202970594U (en) 2012-12-22 2012-12-22 Wellhead device special for oil field fracturing

Country Status (1)

Country Link
CN (1) CN202970594U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632118A (en) * 2013-11-08 2015-05-20 中国石油天然气股份有限公司 Erosion-prevention drilling and completion integrated wellhead device and mounting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632118A (en) * 2013-11-08 2015-05-20 中国石油天然气股份有限公司 Erosion-prevention drilling and completion integrated wellhead device and mounting method

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Legal Events

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

Granted publication date: 20130605

Termination date: 20151222