CN108104748A - Backwash cycles valve - Google Patents
Backwash cycles valve Download PDFInfo
- Publication number
- CN108104748A CN108104748A CN201611069311.9A CN201611069311A CN108104748A CN 108104748 A CN108104748 A CN 108104748A CN 201611069311 A CN201611069311 A CN 201611069311A CN 108104748 A CN108104748 A CN 108104748A
- Authority
- CN
- China
- Prior art keywords
- backwash
- spring
- piston
- cylinder barrel
- top connection
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000005086 pumping Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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
A kind of backwash cycles valve, including cylinder barrel, cylinder barrel one end is connected with top connection, top connection endoporus is connected with internal lining pipe, and the cylinder barrel other end is connected with lower contact, there is spring, piston, pressure cap and sealing element in cylinder barrel, sealing element is locked at by pressure cap on piston, piston side is withstood on spring, and spring pocket is on internal lining pipe, and the spring other end is withstood on top connection end face.In actual use, with tubing string connection backwash cycles valve pressure break is carried out when under products to precalculated position in well, often there is backwash cycles valve and its lower product is buried by sand, termination of pumping at this time simultaneously fills highly pressurised liquid from oil jacket annular space, and highly pressurised liquid passes through backwash cycles valve lateral aperture, promote piston stroking upward, spring is compressed, backwash passage is opened, and highly pressurised liquid is brought into inside oil pipe together ceramsite sand outside product etc. is buried by sand, it is returned out from well head, realizes backwash；The termination of pumping when well head returns liquid without ceramsite sand, piston closes backwash passage under spring force, and can continue pressure break, ensures the continuous of operation.
Description
Technical field
The present invention relates to a kind of backwash cycles valves, belong to well-flushing tool technique in petroleum exploration and development well fracturing operation
Field.
Technical background
At present in petroleum exploration and development well fracturing operation, often meet and fracturing packer is in fracturing process or pressure break
After sand occur bury phenomenon, and sand once occurs and buries, it is difficult to be cleared in time by fracturing packer and by pipe laying column, and manage
The extremely difficult releasing of pressure in column, often results in big well workover, it is impossible to ensure the continuity of pressure break process, so as to ensure that construction is smoothly complete
Into.
The content of the invention
In order to solve the problems, such as in background technology, the present invention provides a kind of backwash cycles valve, and the backwash cycles valve is in oil gas
In well fracturing process or after sand occurs when burying, fracturing packer and top tubing string can be washed out within a short period of time
Come, reduce big well workover, it is ensured that construction smoothly completes.
The technical scheme is that：This kind of backwash cycles valve, including cylinder barrel, one end of cylinder barrel is connected with top connection, on
Coupler bore screw thread is connected with internal lining pipe, and the other end of cylinder barrel is connected with lower contact, there is spring, piston, pressure inside cylinder barrel
Cap and sealing element, by pressure cap screw-threaded coupling on piston, the side of piston is withstood on spring sealing element, and including spring pocket
On bushing pipe, and the other end of spring is withstood on the end face of top connection.
The present invention has the advantages that：1. pressurize out of oil pipe, up to 70Mpa, backwash passage will not be opened at this time,
But it is suppressed out of casing, only needs 2.7Mpa, backwash passage is opened, if stopping suppressing in casing at this time, piston is in spring force
Effect is lower to close backwash passage, ensures the continuous of operation, backwash function and construction success rate are high；2. backwash passage aperture is 4-
φ 32mm, area of passage is big, is applicable to the bad dirty well of hole condition；3. backwash cycles valve seal presss from both sides cloth group using more V-types
Oil sealing is closed, had both ensured that seal pressure reached 70Mpa, and had ensured that piston under the reciprocating of spring force, sealing element is not easy to wear,
Ensure service life, improve production efficiency and reliability.
Description of the drawings
Attached drawing is the half sectional view of the present invention：
In figure：1st, top connection 2, cylinder barrel 3, internal lining pipe 4, spring 5, piston 6, sealing element 7, pressure cap 8, lower contact
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：As it is shown in the figures, the backwash cycles valve includes cylinder barrel 2,
One end of cylinder barrel 2 is threadedly coupled with top connection 1, and the endoporus screw thread of top connection 1 is connected with internal lining pipe 3, the other end of cylinder barrel 2
It is connected with lower contact 8, there is spring 4, piston 5, pressure cap 7 and sealing element 6 inside cylinder barrel 2, sealing element 6 uses screw fastening by pressure cap 7
Tightly on piston 5, the side of piston 5 is withstood on spring 4, and spring 4 is sleeved on internal lining pipe 3, and the other end of spring 4 is pushed up
On the end face of top connection 1.In actual use, backwash cycles valve is connected with fracturing string, pressure break packing is connect under backwash cycles valve
The products such as device, tail pipe, under to pressure break is carried out in well during precalculated position, need to add in ceramsite sand and proportioning from well head in fracturing process
When abnormal conditions occurs in shaft bottom, often there is the tubing string of connection backwash cycles valve and backwash cycles valve and its lower product in glue
It is buried by sand, stops adding sand and proportioning glue at this time, fill highly pressurised liquid from oil jacket annular space, highly pressurised liquid passes through backwash cycles valve
The hole of 4 φ 32mm on 2 side of cylinder barrel promotes piston 5 to move upwards, and compresses spring 4, and sealing element 6 and pressure cap 7 be together at this time
With 5 uplink of piston, backwash passage is opened, and highly pressurised liquid enters from backwash passage inside oil pipe, and outside the product buried by sand
Ceramsite sand and proportioning glue be brought into together inside oil pipe, returned out from well head, realize backwash；When well head returns liquid without ceramsite sand
When, stop oil jacket annular space and suppress, piston 5 closes the backwash passage of 2 side of cylinder barrel under spring force, can continue again at this time
Pressure break ensures the continuous of operation, it is ensured that construction smoothly completes.
Claims (3)
1. a kind of backwash cycles valve, including cylinder barrel, it is characterised in that：One end of cylinder barrel is connected with top connection, and top connection endoporus is used
Screw thread is connected with internal lining pipe, and the other end of cylinder barrel is connected with lower contact, there is spring, piston, pressure cap and sealing element inside cylinder barrel,
By pressure cap screw-threaded coupling on piston, the side of piston is withstood on spring sealing element, and spring pocket is on internal lining pipe, and bullet
The other end of spring is withstood on the end face of top connection.
2. according to claim 1, the backwash passage of 4 32mm is uniformly distributed on the somewhere circumference of backwash cycles valve barrel cylinder side.
3. according to claim 1, backwash cycles valve seal presss from both sides cloth combination oil seal composition using more V-types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069311.9A CN108104748A (en) | 2016-11-24 | 2016-11-24 | Backwash cycles valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069311.9A CN108104748A (en) | 2016-11-24 | 2016-11-24 | Backwash cycles valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108104748A true CN108104748A (en) | 2018-06-01 |
Family
ID=62206068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611069311.9A Pending CN108104748A (en) | 2016-11-24 | 2016-11-24 | Backwash cycles valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108104748A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107256A (en) * | 2019-06-12 | 2019-08-09 | 天津凯雷油田技术有限公司 | Hydraulic control level pressure backwash valve |
| CN113464076A (en) * | 2021-07-21 | 2021-10-01 | 深圳景嘉机电科技有限公司 | Oil-submersible pump well flushing valve and well flushing method |
-
2016
- 2016-11-24 CN CN201611069311.9A patent/CN108104748A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107256A (en) * | 2019-06-12 | 2019-08-09 | 天津凯雷油田技术有限公司 | Hydraulic control level pressure backwash valve |
| CN113464076A (en) * | 2021-07-21 | 2021-10-01 | 深圳景嘉机电科技有限公司 | Oil-submersible pump well flushing valve and well flushing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10240594B2 (en) | Dynamic seal cartridge in a fluid end of a reciprocating pump | |
| US20160160848A1 (en) | Pumps and methods of pumping fluids into a well bore | |
| CN103397863B (en) | Double acting compression packer and using method thereof | |
| CN206397454U (en) | Backwash cycles valve | |
| CN108104748A (en) | Backwash cycles valve | |
| CN105089538A (en) | Sealing structure of rod oil producing wellhead polish rod | |
| US11421508B2 (en) | Fracturing valve systems and methods | |
| CN209067148U (en) | Well mouth sealing device | |
| CN209195663U (en) | A kind of oil well pump | |
| US2760749A (en) | Composite block for shut-off mechanism | |
| CN207315302U (en) | Gas injection protective device | |
| CN204082061U (en) | Fracture used high-pressure sand-proof hydraulic anchor | |
| CN203098261U (en) | Sand-bury-preventing oil well pump oil inlet valve | |
| CN201277164Y (en) | Oil-draining lubricator type oil pump | |
| CN108060905B (en) | High-temperature high-pressure packer | |
| CN205025438U (en) | Oil pipe drags for barrel oil pump | |
| CN107780875A (en) | A kind of blanking plug | |
| CN201184171Y (en) | Bias-wearing-proof pumping unit | |
| CN101162016B (en) | Yield highly effective oil-well pump for mechanical oil production | |
| CN211666680U (en) | Blowout preventer for rod-drive screw pump oil production system | |
| CN204754851U (en) | Wear -resisting packing box of tuningout | |
| US11143324B2 (en) | Valve assembly for use in a flow management system | |
| WO2019169364A1 (en) | Novel valve configuration for long wearability | |
| US11525520B2 (en) | Highly reliable service port | |
| CN2784580Y (en) | Hydraulic locking packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |