CN2512905Y - Leak-proof well flushing device for oil pumping well - Google Patents
Leak-proof well flushing device for oil pumping well Download PDFInfo
- Publication number
- CN2512905Y CN2512905Y CN 01271925 CN01271925U CN2512905Y CN 2512905 Y CN2512905 Y CN 2512905Y CN 01271925 CN01271925 CN 01271925 CN 01271925 U CN01271925 U CN 01271925U CN 2512905 Y CN2512905 Y CN 2512905Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- well
- central tube
- valve body
- leak
- 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
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Abstract
The utility model relates to a leak-proof well flushing device for oil pumping well, consisting of a single restrictor valve body 1, a bumper pin 2, a steel ball 3, a central pipe 4, an oil drain sliding sleeve 5, a bolt 6, a cushion 7, an O-shaped ring 8, a lock spring 9, a sealing sleeve 11, a fastening sleeve 12, a leather bowl 13, an isolation sleeve 14, a sleeve 15, an isolation ring 16, an end sleeve(17), a lower pushing sleeve 18 and a wall sticking device. As the utility model adopts a combined structure of the oil drain sliding sleeve, the leather bowl, the isolation sleeve and the end sleeve, when the well is flushed, the well flushing liquid enters into a circular space of the oil sleeve from a ground pipe; the leather bowl of the leakage-proof well flushing device is opened at the same time; and the steel ball of the single restrictor valve positioned on the central pipe is closed at the same time, thereby preventing the well flushing liquid from leaking into the stratum and achieving the proposal of the leak-proof well flushing. The utility model has the advantages of rational structure, advanced technique, reliable performance, and being suitable to be generalized and used in filed.
Description
The utility model relates to the downhole tool that uses on a kind of oilfield, particularly a kind of pumpingh well leak-proof well-washing device.
In the oil pumping manufacturing process, the paraffin in the well liquid, colloidal bitumen or other solidfied material can slowly be separated out, and on the flow passage components and oil pipe and sucker rod attached to oil well pump, and then cause that the work of oil well pump valve is not normal, and pumpage descends and suspending point loading increases.People take the method for well-flushing to remove paraffin usually, and pitch and other solidfied material be at oil pipe, the deposition on sucker rod and the deep well pump.But the strata pressure of present most pumpingh wells is significantly less than pressure and hydrostatic pressure, and particularly the strata pressure of heavy oil wells is lower, and these low pressure pumpingh wells flushing fluid when well-flushing is inevitable to formation leakage.The flushing fluid flushing fluid that bleeds behind the stratum bleeds and can bring harm to oil well production behind the stratum.
The purpose of this utility model is to provide a kind of pumpingh well leak-proof well-washing device, the leakage of flushing fluid when this kind pumpingh well leak-proof well-washing device and the supporting use of common pumping pipe string can be eliminated well-flushing, the harm of avoiding lost circulation that oil well is brought.
The utility model is to realize like this, it is by single overcurrent valve body (1), backing pin (2), steel ball (3), central tube (4), draining sliding sleeve (5), screw (6), pad (7), round section joint ring (8), snap (9), pressure cap (10), sealing shroud (11), lock sleeve (12), leather cup (13), spacer (14), sleeve (15), spacer ring (16), end cover (17), following pushing sleeve (18), adherent device (19) is formed, single overcurrent valve body (1) is connected with central tube (4), be evenly distributed with slotted eye on it, steel ball (3) is placed in single overcurrent valve body (1), in the pin-and-hole of backing pin (2) the single overcurrent valve body of insertion (1) and the jail of expanding, snap (9) is fixed on the draining sliding sleeve (5) with pad (7) and screw (6) and overlaps the upper end that installs to central tube (4), and the prominent head of snap (9) snaps onto in the trapezoidal annular groove of central tube (4); Round section joint ring (8) is arranged in the groove groove of central tube 4, successively with pressure cap (10), sealing shroud (11), be sleeved on the central tube (4) with lock sleeve (12), sleeve (15) cover installs on the central tube (4), there are leather cup (13), spacer (1 4) spacer ring (16) to be sleeved on the sleeve (15) successively with end cover (17), end cover (17) is threaded with sleeve (15), more than be combined as well-washing device, following pushing sleeve (18) is threaded with adherent device (19), is combined as releasing device.
The utility model is owing to adopted the combining structure of draining sliding sleeve, leather cup, spacer, end cover (17), flushing fluid enters oil casing annular space by surface line during well-flushing, this moment, the sealing cup of leak-proof well-washing device opened, single excess flow valve steel ball on the central tube cuts out simultaneously, has stoped flushing fluid to the stratum seepage, realizes the purpose of leak-proof well-washing, the utility model reasonable in design, technical performance advanced person, reliable operation is well suited for field popularization application.
Fig. 1 the utility model general structure schematic diagram.
Fig. 2 is the utility model releasing device structural representation.
Below in conjunction with accompanying drawing the utility model is further specified.
The utility model is made up of single overcurrent valve body 1, backing pin 2, steel ball 3, central tube 4, draining sliding sleeve 5, screw 6, pad 7, round section joint ring 8, snap 9, pressure cap 10, sealing shroud 11, lock sleeve 12, leather cup 13, spacer 14, sleeve 15, spacer ring 16, end cover 17, following pushing sleeve 18, adherent device 19, the draining sliding sleeve 5 that is assembled with snap 9 pads 7 screws 6 is overlapped the upper end that installs to central tube 4, and the prominent head of snap 9 snaps onto in the trapezoidal annular groove of central tube 4; Successively with pressure cap 10, sealing shroud 11, install on the central tube 4, and pressure cap 10 is threaded with lock sleeve 11 usefulness with lock sleeve 12 covers; Sleeve 15 cover is installed on the central tube 4, and be threaded with lock sleeve 12 usefulness, successively leather cup 13 spacers 14 spacer rings 16 are installed on the sleeve 15 with end cover 17 covers, and will hold and overlap 17 and be threaded with sleeve 15 usefulness, following pushing sleeve (18) is threaded with adherent device (19).Adherent device 19 can lean on flexible member tightly to support in sleeve pipe, but can move in sleeve pipe under external force.
The order of connection of the utility model in oil well is such (from top to bottom) production wellhead-oil pipe-deep well pump-oil pipe (being set with releasing device)--well-washing device-tail pipe-sand anchor-sand sediment pipe-plug.
During normal the oil pumping, oil well liquid-producing enters deep well pump and the oil casing annular space more than the well-washing device through sand anchor, tail pipe, well-washing device central tube 4, single excess flow valve 1, goes out ground through the deep well pump suction.Flushing fluid enters oil casing annular space by surface line during well-flushing, and this moment, the sealing cup 13 of leak-proof well-washing device opened, and the single excess flow valve steel ball 3 on the central tube 4 cuts out simultaneously, has stoped flushing fluid to the stratum seepage, realizes the purpose of leak-proof well-washing.When carrying oil pipe on the oil well pump detection and workover, be connected leak-proof well-washing device under the pump together with carrying on the oil pipe, and the releasing device that is enclosed within on the oil pipe is supported in the sleeve pipe because of spring plank, temporary transient maintenance is motionless relatively, draining sliding sleeve 5 on the well-washing device is opened to be let out promotion and moves down along central tube 4, make the draining hole open wide draining, the well liquid more than the well-washing device is leaked in the pit shaft below the well-washing device, well liquid does not pollute the well site when guaranteeing pump detection and workover.
Claims (2)
1, a kind of pumpingh well leak-proof well-washing device, by single overcurrent valve body (1), backing pin (2), steel ball (3), central tube (4), draining sliding sleeve (5), screw (6), pad (7), round section joint ring (8), snap (9), pressure cap (10), sealing shroud (11), lock sleeve (12), leather cup (13), spacer (14), sleeve (15), spacer ring (16), end cover (17), following pushing sleeve (18), adherent device (19) is formed, it is characterized in that: steel ball (3) places in single overcurrent valve body (1), in the pin-and-hole of the single overcurrent valve body 1 of backing pin 2 insertions and the jail of expanding, the lower end of single overcurrent valve body (1) is connected with tubing round thread with the upper end of central tube (4); Snap (9) is fixed on the draining sliding sleeve (5) with pad (7) and screw (6), be with round section joint ring (8) in the groove of central tube (4), draining sliding sleeve (5) cover installs to the upper end of central tube (4), and the prominent head of snap (9) snaps in the trapezoidal annular groove of central tube (4); Pressure cap (10), sealing shroud (11) install on the central tube (4) with lock sleeve (12) cover, and pressure cap (10) and lock sleeve (12) are with being threaded; Sleeve (15) cover installs on the central tube (4), and with lock sleeve (12) with being threaded; Leather cup (13) spacer (14) spacer ring (16) installs on the sleeve (15) with end cover (17) cover, and end cover (17) and sleeve (15) be with being threaded, and following pushing sleeve (18) and adherent device (19) are with being threaded.
2,, it is characterized in that single overcurrent valve body (1) axially is evenly distributed with the water conservancy diversion cylindrical void according to the described pumpingh well leak-proof well-washing of claim 1 device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271925 CN2512905Y (en) | 2001-11-29 | 2001-11-29 | Leak-proof well flushing device for oil pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271925 CN2512905Y (en) | 2001-11-29 | 2001-11-29 | Leak-proof well flushing device for oil pumping well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512905Y true CN2512905Y (en) | 2002-09-25 |
Family
ID=33677214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01271925 Expired - Fee Related CN2512905Y (en) | 2001-11-29 | 2001-11-29 | Leak-proof well flushing device for oil pumping well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512905Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464616A (en) * | 2016-01-06 | 2016-04-06 | 冯俊杰 | Well-washing environment-friendly double-cup packer |
| CN106223900A (en) * | 2016-10-08 | 2016-12-14 | 任鹏 | A kind of electric pump well blocks up earial drainage one temporarily from lifting casting and dragging free device |
| CN115653543A (en) * | 2022-10-27 | 2023-01-31 | 中国石油天然气集团有限公司 | Oil well sand washing and well washing conversion device, oil well sand washing and well washing system and method |
-
2001
- 2001-11-29 CN CN 01271925 patent/CN2512905Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464616A (en) * | 2016-01-06 | 2016-04-06 | 冯俊杰 | Well-washing environment-friendly double-cup packer |
| CN106223900A (en) * | 2016-10-08 | 2016-12-14 | 任鹏 | A kind of electric pump well blocks up earial drainage one temporarily from lifting casting and dragging free device |
| CN106223900B (en) * | 2016-10-08 | 2018-10-02 | 任鹏 | A kind of electric pump well temporarily blocks up aerial drainage one from lifting casting and dragging free device |
| CN115653543A (en) * | 2022-10-27 | 2023-01-31 | 中国石油天然气集团有限公司 | Oil well sand washing and well washing conversion device, oil well sand washing and well washing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |