CN202578614U - Well head device special for oil gas well fracturing construction - Google Patents
Well head device special for oil gas well fracturing construction Download PDFInfo
- Publication number
- CN202578614U CN202578614U CN2012201454690U CN201220145469U CN202578614U CN 202578614 U CN202578614 U CN 202578614U CN 2012201454690 U CN2012201454690 U CN 2012201454690U CN 201220145469 U CN201220145469 U CN 201220145469U CN 202578614 U CN202578614 U CN 202578614U
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- well
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- oil
- well head
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- Expired - Fee Related
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Abstract
The utility model provides a well head device special for oil gas well fracturing construction, and belongs to a well head special for conventional oil, gas, water well sealing and fracturing construction in an oil field. The well head device comprises a fracturing liquid input portion, a head gate and a well washing portion. The fracturing liquid input portion, the head gate, a downhole string suspension portion and the well washing portion are sequentially connected from top to bottom. The downhole string suspension portion comprises an upper flange, an oil pipe connector and a lifting sub. The upper flange is respectively connected with the head gate and a casing spool through tube joints and well head bolts. The lifting sub is connected with the oil pipe connector, and is sleeved in the upper flange in a penetrating mode. The upper end of the lifting sub is connected with the head gate. The lower end of the oil pipe connector is connected with a downhole fracturing string. Gates installed in the well head device are all ball-type gates; and the well head device is simple in structure, light in weight, convenient to install, quick in operation, high-pressure resistant, and not prone to pierce and damage. The well head device can reduce working load of disassembly and replacement of a well head, and can reduce construction time.
Description
Technical field
The utility model relates to petroleum industry oil, gas, the working wellhead equipment of well fracturing, and the special-purpose wellhead assembly of particularly a kind of oil gas water well pressing crack construction is the special-purpose well head of the conventional oil in a kind of oil field, gas, well card envelope pressing crack construction.
Background technology
At present, the oilfield well is conventional to be blocked when sealing pressing crack construction, and at the general special-purpose wellhead assembly that withstand voltage 105Mpa is installed of well head, this wellhead assembly uses the flashboard gate, and its four-way junction of casing is connected with the boll-weevil hanger of well head, and realization is connected with the underground fracture tubing string.Be to guarantee construction safety, its all flashboard gate all adopts the gates of withstand voltage 105Mpa, causes the volume of fracture well head big, installs and waste time and energy, and influences construction period.It is high that the back well head is installed, and makes troubles for the job execution personnel, operates the careless slightly flashboard gate that just possibly cause and damage, and bring potential safety hazard to construction, and manufacturing cost is high.Therefore, in the pressing crack construction of oil gas water well, more need a kind of easy for installation, volume is little, in light weight, the special-purpose wellhead assembly of pressing crack construction that makes things convenient for well head construction and construction safety.
Summary of the invention
The purpose of the utility model provides the special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction, reduces the weight and volume of the special-purpose wellhead assembly of pressing crack construction, can guarantee the safety of pressing crack construction, convenient installation and operation.
The technical scheme of the utility model is: the special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction comprises fracturing fluid importation, master valve and well-flushing part, and fracturing fluid importation, master valve, down-hole string suspended portion and well-flushing part are connected from top to bottom successively.The down-hole string suspended portion comprises upper flange, oil connection and lifting sub, and upper flange is connected with four-way junction of casing with master valve respectively with the well head bolt through oil the ninth of the ten Heavenly Stems; Lifting sub is connected with oil connection, is set in the upper flange, and the upper end of lifting sub is connected with master valve, and the lower end of oil connection is connected with the underground fracture tubing string.
The utlity model has following useful effect: this special-purpose wellhead assembly does not design oil pipe and articulates part, and the pressing crack construction tubing string directly is connected with the well head upper flange in the well, makes the weight of underground fracture tubing string directly put on four-way junction of casing
On,Safety factor is higher.The gate that the utility model is installed all adopts the ball-type gate, and simple in structure, in light weight, easy for installation, swift to operate, high pressure resistant, difficult thorn leaks and damages.The high pressure well-flushing gate of the utility model adopts 70 Mpa four-way gates, has effectively reduced the weight and volume of wellhead assembly, has reduced the wellhead assembly height.Use this special-purpose wellhead assembly can reduce the workload that changes well head greatly, reduce the job execution time.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description: referring to accompanying drawing; The special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction comprises fracturing fluid importation, master valve 15 and well-flushing part, and fracturing fluid importation, master valve 15, down-hole string suspended portion and well-flushing part are connected from top to bottom successively.The fracturing fluid importation comprises little four-way 11, fracturing fluid input regulating gate 16, union, benefit core 12, pressure meter 13 and stop valve 14; The top of little four-way 11 is connected with stop valve 14 with fracturing fluid input regulating gate 16, benefit core 12, pressure meter 13 through union respectively with both sides, and its fracturing fluid input regulating gate 16 is 105MPa four-way gates.The below of little four-way 11 is connected with master valve 15 through union.Master valve 15 is through union connection well lower tubular column suspended portion.The down-hole string suspended portion comprises upper flange 8, oil connection 9 and lifting sub 10, and upper flange 8 is connected with four-way junction of casing 6 with master valve 15 respectively with well head bolt 7 through oil the ninth of the ten Heavenly Stems; Lifting sub 10 is connected with oil connection 9, is set in the upper flange 8, and the upper end of lifting sub 10 is connected with master valve 15, and the lower end of oil connection 9 is connected with the underground fracture tubing string.Between upper flange 8 and the four-way junction of casing 6 well head ring gasket 17 is housed.Well-flushing partly comprises high pressure well-flushing gate 4, and its high pressure well-flushing gate 4 is 70 MPa four-way gates.High pressure well-flushing gate 4, master valve 15 and fracturing fluid input regulating gate 16 are the ball-type gate.The well-flushing part also comprises end face flange 2 and well-flushing union 3; Four-way junction of casing 6 both sides are connected with end face flange 2 through flange bolt 5 respectively; And be connected mounting flange ring gasket 18 between four-way junction of casing 6 and end face flange 2 with high pressure well-flushing gate 4 through well-flushing union 3.Select corresponding sleeve pipe reducing 1 according to casing size, adopt screwed connection, be connected on the sleeve pipe; Adopt screwed connection then, mounting sleeve four-way 6, push-tight.In this special-purpose wellhead assembly, the below of four-way junction of casing 6 is connected with sleeve pipe reducing 1, and oil connection 9 is connected with the underground fracture tubing string, and this special-purpose wellhead assembly is fixedly mounted in by in the well head of fractured well.
Application notice:
1. after pressing crack construction is accomplished, close master valve 15 and fracturing fluid input regulating gate 16, remove the feed flow manifold, install oil nozzle cover and 25MPa gate that open flow is used.Master valve 15 can not be used as the open flow regulating gate during open flow, must guarantee master valve 15 standard-sized sheets during open flow after the pressure break, with the 25MPa gate control open flow that connects.
2. the gate in the wellhead assembly is a special-purpose member, and voltage withstand class is different, can not use with during use.
Claims (6)
1. the special-purpose wellhead assembly of oil gas water well pressing crack construction comprises fracturing fluid importation, master valve (15) and well-flushing part, it is characterized in that, fracturing fluid importation, master valve (15), down-hole string suspended portion and well-flushing part are connected from top to bottom successively.
2. the special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction according to claim 1; It is characterized in that; Said down-hole string suspended portion comprises upper flange (8), oil connection (9) and lifting sub (10), and upper flange (8) is connected with four-way junction of casing (6) with master valve (15) respectively with well head bolt (7) through oil the ninth of the ten Heavenly Stems; Lifting sub (10) is connected with oil connection (9), is set in the upper flange (8), and the upper end of lifting sub (10) is connected with master valve (15), and the lower end of oil connection (9) is connected with the underground fracture tubing string.
3. the special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction according to claim 1 is characterized in that, between said upper flange (8) and the four-way junction of casing (6) well head ring gasket (17) is housed.
4. the special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction according to claim 1 is characterized in that said well-flushing partly comprises high pressure well-flushing gate (4), and its high pressure well-flushing gate (4) is 70 MPa four-way gates.
5. the special-purpose wellhead assembly of a kind of oil gas water well pressing crack construction according to claim 1 is characterized in that, said fracturing fluid importation comprises fracturing fluid input regulating gate (16), and its fracturing fluid input regulating gate (16) is a 105MPa four-way gate.
6. according to claim 2 or the special-purpose wellhead assembly of 4 or 5 described a kind of oil gas water well pressing crack constructions, it is characterized in that said high pressure well-flushing gate (4), master valve (15) and fracturing fluid input regulating gate (16) are the ball-type gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201454690U CN202578614U (en) | 2012-04-09 | 2012-04-09 | Well head device special for oil gas well fracturing construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201454690U CN202578614U (en) | 2012-04-09 | 2012-04-09 | Well head device special for oil gas well fracturing construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578614U true CN202578614U (en) | 2012-12-05 |
Family
ID=47248035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201454690U Expired - Fee Related CN202578614U (en) | 2012-04-09 | 2012-04-09 | Well head device special for oil gas well fracturing construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202578614U (en) |
Cited By (2)
| 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 installation method |
| CN108252681A (en) * | 2017-12-27 | 2018-07-06 | 中国石油天然气股份有限公司 | Steam channeling prevention and control device and method for thermal production well operation |
-
2012
- 2012-04-09 CN CN2012201454690U patent/CN202578614U/en not_active Expired - Fee Related
Cited By (2)
| 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 installation method |
| CN108252681A (en) * | 2017-12-27 | 2018-07-06 | 中国石油天然气股份有限公司 | Steam channeling prevention and control device and method for thermal production well operation |
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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: 20121205 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |