CN104790907A - Tubing head blocking isolating valve for fracture wellhead device - Google Patents
Tubing head blocking isolating valve for fracture wellhead device Download PDFInfo
- Publication number
- CN104790907A CN104790907A CN201510114523.3A CN201510114523A CN104790907A CN 104790907 A CN104790907 A CN 104790907A CN 201510114523 A CN201510114523 A CN 201510114523A CN 104790907 A CN104790907 A CN 104790907A
- Authority
- CN
- China
- Prior art keywords
- tubing head
- valve
- way
- fracture
- isolating valve
- 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
Links
- 230000000903 blocking effect Effects 0.000 title abstract 4
- 241000254175 Anthonomus grandis Species 0.000 claims description 8
- 238000012360 testing method Methods 0.000 abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/05—Flapper valves
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a tubing head blocking isolating valve for a fracture wellhead device. The tubing head blocking isolating valve comprises a tubing head four-way piece. Two valve seats which are symmetrical left and right are assembled in a horizontal channel of an inner cavity of the tubing head four-way piece. A valve plate is arranged between the two valve seats in a sleeving mode, the lower end of the valve plate is connected with a tail rod, and the upper end of the valve plate is connected with a valve rod. The valve rod extends upwards to be exposed out of a shell of the tubing head four-way piece and connected with a valve rod nut in a threaded and sleeved mode, and a hand wheel is fixedly connected to the upper end face of the valve rod nut. One end of the tubing head four-way piece is connected with a fracture tree and provided with two side connectors, and the other end of the tubing head four-way piece is connected with a wellhole. According to the tubing head blocking isolating valve, lots of water resources are saved, the wellhole can be effectively protected, the safety coefficient of the wellhole is increased, and the safety of a wellhead is greatly guaranteed because rated working pressure testing can be performed on the fracture wellhead device.
Description
Technical field
The invention belongs to oil drilling and extracting equipment technical field, relate to a kind of device for fracturing wellhead tubing head and block isolating valve.
Background technology
The device for fracturing wellhead of complete set mainly comprises tubing head assembly and pressure break sets two parts, and in fracture acidizing process, pressure break is located in above tubing head by tree.The Main Function of tubing head hangs oil pipe, the annular space between sealing oil pipe and sleeve pipe; The Main Function of pressure break tree is switch, control and guidance gas stream and sealing oil pipe.Whole device need meet the formation testing completion jobs that requires special skills such as testing pressure down hole, well-flushing, fracture acidizing.
Existing device for fracturing wellhead after installation is complete, needs whole device pressure testing, guarantees the connection sealing of everywhere effectively.And the test technology at scene whole pit shaft is filled water, fracturing unit truck is set whole wellbore pressure test by pressure break, do like this and the security risk of pit shaft can be caused greatly to increase, and a large amount of wastes of water resource can be caused, simultaneously, pit shaft intensity determines maximumly can only bear 90MPa pressure, cannot carry out 105MPa and above pressure test to whole device for fracturing wellhead, and it is defective that its sealing reliability detects.For this reason, need a kind of device for fracturing wellhead tubing head to block isolating valve, this blocking-up isolating valve can carry out pressure testing to its above all sites, guarantee each position sealing reliability after cutting out.The waste of water resource can be avoided simultaneously, due to not to pit shaft pressurization, fine protective effect is played to pit shaft.
Summary of the invention
The object of this invention is to provide a kind of device for fracturing wellhead tubing head and block isolating valve, solve prior art and adopt water flooding regime to cause the security risk of pit shaft greatly to increase, cause water resource to waste in a large number; And the problem of 105MPa and above pressure test cannot be carried out to whole device for fracturing wellhead.
The technical solution used in the present invention is, a kind of device for fracturing wellhead tubing head blocks isolating valve, comprise tubing head four-way, symmetrical two pieces of valve seats are equipped with in tubing head four-way inner chamber horizontal channel, be set with valve plate between these two pieces of valve seats, valve plate lower end is connected with foot piece, and valve plate upper end is connected with valve rod, valve rod upwards exposes tubing head four-way housing and is socketed with valve stem nut screw thread, and valve stem nut upper surface is fixedly connected with handwheel; One end of tubing head four-way is set with pressure break and is connected, and this end is provided with two side interfaces, the other end of tubing head four-way is connected with pit shaft simultaneously.
A kind of device for fracturing wellhead tubing head of the present invention blocks isolating valve, is further characterized in that:
Tubing head four-way and pressure break are set in flange connections inner chamber and are provided with boll-weevil hanger, and two side interfaces of tubing head four-way are communicated with one group of gate valve respectively.
The invention has the beneficial effects as follows, mouth bottom, tubing head four-way side is provided with a blocking-up isolating valve, and blocking-up isolating valve is in complete opening for a long time.When pressure break tree is seated in after on tubing head, blocking-up isolating valve can be closed, to whole device for fracturing wellhead pressure testing, to detect the sealing reliability of each parts.After pressure testing is qualified, opens block isolating valve completely, then send into oil pipe and boll-weevil hanger, pull down pressure break tree, the oil recovery (gas) that finally changes the outfit is set, and can carry out oil (gas) well and normally produce.
This blocking-up isolating valve is in order to device for fracturing wellhead pressure testing, guarantees the connection sealing of everywhere effectively, and without the need to full wellbore pressure test, thus well protect pit shaft.Detailed process is: closed by tubing head isolating valve, all the other each valves are all in half-open position, then fill water by fracturing unit truck toward device for fracturing wellhead, then to whole device for fracturing wellhead pressure testing.After pressure testing completes; tubing head is blocked isolating valve and is in fully open position for a long time; overcome the shortcoming that conventional device for fracturing wellhead needs full wellbore pressure test; avoid traditional pressure test process and cause a large amount of water resource waste; effectively can also protect pit shaft simultaneously; save great lot of water resources, add the safety factor of pit shaft, and rated operating pressure pressure testing can be carried out to device for fracturing wellhead.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of apparatus of the present invention;
Fig. 2 is the using state structural representation of apparatus of the present invention.
In figure, 1. tubing head four-way, 2. valve seat, 3. valve plate, 4. valve stem nut, 5. handwheel, 6. valve rod, 7. foot piece, 8. side interface, 9. pressure break tree, 10. blocks isolating valve, 11. tubing head assembly, 8. boll-weevil hangers.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
With reference to Fig. 1, the structure of apparatus of the present invention is, comprise tubing head four-way 1, symmetrical two pieces of valve seats 2 are equipped with in tubing head four-way 1 inner chamber horizontal channel, be set with valve plate 3 between these two pieces of valve seats 2, valve plate 3 lower end is connected with foot piece 7, and valve plate 3 upper end is connected with valve rod 6, valve rod 6 upwards exposes tubing head four-way 1 housing and is socketed with valve stem nut 4 screw thread, and valve stem nut 4 upper surface is fixedly connected with handwheel 5; One end (in figure left end osculum) of tubing head four-way 1 is set 9 with pressure break and is connected, and this end is provided with two side interfaces 8, the other end (in figure the large mouth of right-hand member) of tubing head four-way 1 is connected with pit shaft simultaneously; In above-mentioned Fig. 1, all parts form blocking-up isolating valve 10 on the whole;
With reference to Fig. 2, tubing head four-way 1 and pressure break are set in 9 flange connections inner chambers and are provided with boll-weevil hanger 12, and two side interfaces 8 of tubing head four-way 1 are communicated with one group of gate valve respectively; Block isolating valve 10 and form tubing head assembly 11 together with boll-weevil hanger 12 and both sides gate valve, tubing head assembly 11 and pressure break are set 9 and are connected and composed device for fracturing wellhead.
The process of the test of apparatus of the present invention is:
With reference to Fig. 1, turn clockwise handwheel 5, valve stem nut 4 is driven to rotate, because valve plate 3 can only move up and down, thus make valve rod 6 drive valve plate 3 to move down, through hole between two valve seats 2 is closed by final valve plate 3 completely, and namely block isolating valve 10 and close completely, now foot piece 7 plays the effect guiding valve plate 3.Then, by pressure break tree 9 toward device for fracturing wellhead water filling, pressure testing is carried out to device for fracturing wellhead, to detect the sealing reliability of device for fracturing wellhead.
After pass the test, be rotated counterclockwise handwheel 5, drive valve stem nut 4 to rotate, thus make valve rod 6 drive valve plate 3 to move up, the through hole between final valve plate 3 through hole and two valve seats 2 is completely through, blocks isolating valve 10 and opens completely, be i.e. Fig. 1 state.
Finally, by pressure break tree 9, in device for fracturing wellhead, send into oil pipe and boll-weevil hanger 12, boll-weevil hanger 12 is seated in the inner chamber of tubing head four-way 1, and at this moment device for fracturing wellhead has assembled.
In fracturing work process, if leaking appears in the valve in pressure break tree 9, when no killing well, directly can close and block isolating valve 10, the valve in pressure break tree 9 is keeped in repair quickly and easily or changed, greatly ensure that well head safe.
Claims (2)
1. a device for fracturing wellhead tubing head blocks isolating valve, it is characterized in that: comprise tubing head four-way (1), symmetrical two pieces of valve seats (2) are equipped with in tubing head four-way (1) inner chamber horizontal channel, valve plate (3) is set with between these two pieces of valve seats (2), valve plate (3) lower end is connected with foot piece (7), valve plate (3) upper end is connected with valve rod (6), valve rod (6) upwards exposes tubing head four-way (1) housing and is socketed with valve stem nut (4) screw thread, valve stem nut (4) upper surface is fixedly connected with handwheel (5), one end of tubing head four-way (1) is set (9) and is connected with pressure break, this end is provided with two side interfaces (8), the other end of tubing head four-way (1) is connected with pit shaft simultaneously.
2. a kind of device for fracturing wellhead tubing head according to claim 1 blocks isolating valve, it is characterized in that: described tubing head four-way (1) and pressure break are set in (9) flange connections inner chamber and be provided with boll-weevil hanger (12), and two side interfaces (8) of tubing head four-way (1) are communicated with one group of gate valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114523.3A CN104790907A (en) | 2015-03-16 | 2015-03-16 | Tubing head blocking isolating valve for fracture wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114523.3A CN104790907A (en) | 2015-03-16 | 2015-03-16 | Tubing head blocking isolating valve for fracture wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790907A true CN104790907A (en) | 2015-07-22 |
Family
ID=53556043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510114523.3A Pending CN104790907A (en) | 2015-03-16 | 2015-03-16 | Tubing head blocking isolating valve for fracture wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790907A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109804133A (en) * | 2016-09-09 | 2019-05-24 | Fmc技术股份有限公司 | The fuel-displaced guard system of pressure break |
| CN109854206A (en) * | 2019-03-05 | 2019-06-07 | 丁贺东 | The antifreeze combined valve device of well |
| CN111022017A (en) * | 2019-11-22 | 2020-04-17 | 中国石油天然气集团有限公司 | Manual fracturing and production wellhead device and using method thereof |
| CN111022016A (en) * | 2019-11-22 | 2020-04-17 | 中国石油天然气集团有限公司 | Hydraulic fracturing and production wellhead device and using method thereof |
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| CN101413385A (en) * | 2008-12-01 | 2009-04-22 | 什邡慧丰采油机械有限责任公司 | Well head safe hydraulic pressure cut-off apparatus |
| CN101832119A (en) * | 2010-03-18 | 2010-09-15 | 江苏咸中石油机械有限公司 | Low-consumption flat valve |
| CN202788720U (en) * | 2012-06-01 | 2013-03-13 | 中国石油天然气集团公司 | Pipe-in-pipe steam injection wellhead device |
| CN203670846U (en) * | 2014-01-16 | 2014-06-25 | 西安东新石油设备厂有限公司 | Flat gate valve with under-pressure replace valve rod and balance rod |
| CN203742547U (en) * | 2014-04-02 | 2014-07-30 | 江苏双辉机械制造有限公司 | Novel energy-saving environment-friendly gas-injection well head device |
| CN203891837U (en) * | 2014-05-20 | 2014-10-22 | 宝鸡石油机械有限责任公司 | Large-diameter high-pressure oil and gas recovery wellhead device |
| CN204175245U (en) * | 2014-10-20 | 2015-02-25 | 中国石油天然气股份有限公司 | Three-pipe wellhead device |
-
2015
- 2015-03-16 CN CN201510114523.3A patent/CN104790907A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2213846C1 (en) * | 2002-03-13 | 2003-10-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method of freezing prevention of water-injection well mouth |
| RU2250985C2 (en) * | 2003-04-29 | 2005-04-27 | Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ" | Method for extracting oil from a well and device for realization of said method |
| CN2929159Y (en) * | 2006-06-30 | 2007-08-01 | 新疆石油管理局采油工艺研究院 | Hot production wellhead device |
| CN201110154Y (en) * | 2007-11-19 | 2008-09-03 | 南京伟业机械有限公司 | Oil production, gas well mouth apparatus |
| CN101413385A (en) * | 2008-12-01 | 2009-04-22 | 什邡慧丰采油机械有限责任公司 | Well head safe hydraulic pressure cut-off apparatus |
| CN101832119A (en) * | 2010-03-18 | 2010-09-15 | 江苏咸中石油机械有限公司 | Low-consumption flat valve |
| CN202788720U (en) * | 2012-06-01 | 2013-03-13 | 中国石油天然气集团公司 | Pipe-in-pipe steam injection wellhead device |
| CN203670846U (en) * | 2014-01-16 | 2014-06-25 | 西安东新石油设备厂有限公司 | Flat gate valve with under-pressure replace valve rod and balance rod |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109804133A (en) * | 2016-09-09 | 2019-05-24 | Fmc技术股份有限公司 | The fuel-displaced guard system of pressure break |
| CN109854206A (en) * | 2019-03-05 | 2019-06-07 | 丁贺东 | The antifreeze combined valve device of well |
| CN111022017A (en) * | 2019-11-22 | 2020-04-17 | 中国石油天然气集团有限公司 | Manual fracturing and production wellhead device and using method thereof |
| CN111022016A (en) * | 2019-11-22 | 2020-04-17 | 中国石油天然气集团有限公司 | Hydraulic fracturing and production wellhead device and using method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |
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| RJ01 | Rejection of invention patent application after publication |