CN204646167U - A kind of well mouth oil pipe plugging device - Google Patents
A kind of well mouth oil pipe plugging device Download PDFInfo
- Publication number
- CN204646167U CN204646167U CN201520173679.4U CN201520173679U CN204646167U CN 204646167 U CN204646167 U CN 204646167U CN 201520173679 U CN201520173679 U CN 201520173679U CN 204646167 U CN204646167 U CN 204646167U
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- valve
- rod connector
- polished rod
- hole
- rod
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Abstract
The utility model discloses a kind of well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, arranges two tapping pin formula one way valves in described polished rod connector; The utility model, by arranging two tapping pin formula one way valves, can be guaranteed open for a pair when having at least in the first valve rod after polished rod is threaded into the polished rod connector of well mouth oil pipe plugging device and the first valve seat or the second valve rod and the second valve seat.
Description
Technical field
The utility model relates to a kind of well mouth oil pipe plugging device, is specially a kind of oilfield pump detection and workover well mouth oil pipe plugging device, belongs to oil exploration equipment technical field.
Background technology
The high oil well of oil-gas ratio, before pump detection and workover, owing to having solution gas in tubing string, causes after bleeding off pressure dismounting well head, and when not dynamic tubing string deblocking tubing anchor pressure release, well head constantly outside oil spilling gas, cannot carry out normal oil well pump detection and workover.Invention and created name is: well mouth oil pipe plugging device, and the patent No. is: the device that the patent of 2014200925879 proposes solves above problem, and prior art as shown in Figure 1.
When installing well head oil line stopper, owing to having solution gas in down-hole oil tube, well head is outside oil spilling gas constantly.Therefore, first change polished rod seal apparatus with pressure, current wellhead polish rod sealed packing box is replaced by major path polished rod sealer, so just can close oil gas with pressure in oil pipe, then with tool of unloading, rod weight is transferred on polished rod sealer, the connection of polished rod and sucker rod is dismantled, well mouth oil pipe plugging device can be mounted between sucker rod and polished rod, then sucker rod and well mouth oil pipe plugging device are lowered in pit shaft oil pipe.After polished rod is threaded into well mouth oil pipe plugging device polished rod connector, polished rod presses down the valve rod of tapping pin formula one way valve, the valve rod of tapping pin formula one way valve and valve seat are opened, the input of tapping pin formula one way valve is communicated with between output, make the well mouth oil pipe plugging device top and the bottom pressure balance in oil pipe, make polished rod, well mouth oil pipe plugging device and sucker rod descending smoothly.After the plunger be connected when sucker rod bottom contacts with deep well working barrel, rod weight and load are all transferred on oil pipe, just can unload polished rod.After polished rod unloads, under spring force, valve rod and valve seat close sealing to tapping pin formula one way valve, now seal between the input of tapping pin formula one way valve and output.Oil pipe passage all blocks by well mouth oil pipe plugging device; Propose the pressure release of downhole oil tubing string deblocking oil pipe anchoring apparatus on after dismantling wellhead assembly when constructor constructs, just can carry out the construction of inspection pump.
Well mouth oil pipe plugging device Long-Time Service can cause the coefficient of elasticity of the spring on valve rod to change, cause the position of possibility valve rod movement after polished rod is threaded into well mouth oil pipe plugging device polished rod connector limited, and the valve rod of tapping pin formula one way valve and valve seat are not effectively opened.
Summary of the invention
The purpose of this utility model is to provide a kind of well mouth oil pipe plugging device, mainly solve following technical problem: well mouth oil pipe plugging device Long-Time Service can cause the coefficient of elasticity of the spring on valve rod to change, cause the position of possibility valve rod movement after polished rod is threaded into well mouth oil pipe plugging device polished rod connector limited, and the valve rod of tapping pin formula one way valve and valve seat are not effectively opened.
In order to realize above object, the technical solution of the utility model is as follows: a kind of well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, and the periphery of described sucker rod connector is fixedly installed one or more cone seal rubber bowl successively, the first tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described first tapping pin formula one way valve comprises the first spring base, first spool, first valve rod and the first valve seat, first spring base is arranged in the axial central through hole of polished rod connector, first spring base is provided with axial center hole, described first spool is arranged on the first valve rod, one end of first valve rod is placed through in the axial center hole of the first spring base slidably, the first valve rod between first spring base and the first spool has placed spring, the first valve seat coordinated with the first spool is provided with in the axial central through hole of the polished rod connector outside described first spring base, first tapping pin formula one way valve is by connecting one end of polished rod and connect or the change in displacement unloading polished rod to drive the first valve rod controlling the switch of the first tapping pin formula one way valve at polished rod connector, sucker rod connector is provided with the first radial direction through hole be connected with the input of the first tapping pin formula one way valve, described polished rod connector is provided with the second radial direction through hole be connected with the output of the first tapping pin formula one way valve, it is characterized in that, arrange the second tapping pin formula one way valve in the axial central through hole of polished rod connector, the second tapping pin formula one way valve is positioned at the left side of the first tapping pin formula one way valve, described second tapping pin formula one way valve comprises the second spring base, second spool, second valve rod and the second valve seat, second spring base is arranged in the axial central through hole of polished rod connector, second spring base is provided with axial center hole, described second spool is arranged on the second valve rod, one end of second valve rod is placed through in the axial center hole of the second spring base slidably, the second valve rod between second spring base and the second spool has placed spring, the second valve seat coordinated with the second spool is provided with in the axial central through hole of polished rod connector, described polished rod connector is provided with the 3rd radial direction through hole be connected with the output of the second tapping pin formula one way valve.The right-hand member of the second valve rod contacts with the left end of the first valve rod.
Compared with prior art, the beneficial effects of the utility model: the utility model is by arranging two tapping pin formula one way valves, can guarantee open for a pair when having at least in the first valve rod after polished rod is threaded into the polished rod connector of well mouth oil pipe plugging device and the first valve seat, the second valve rod and the second valve seat, even if one of them tapping pin formula one way valve is because the elastic coefficient changes and causes working, another tapping pin formula one way valve can also normally work.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art.
Fig. 2 is the first tapping pin formula one way valve and the first tapping pin formula one way valve position view.
Wherein, 1 is polished rod connector; 2 is sucker rod connectors; 3 is axial central through hole; 4 is first tube connectors; 5 is second tube connectors; 6 is cone seal rubber bowls; 7 is first tapping pin formula one way valves; 8 is first spring bases; 9 is first spools; 10 is first valve rods; 11 is first valve seats; 12 is springs; 13 is first radial direction through hole; 14 is second radial direction through hole; 15 is second tapping pin formula one way valves; 16 is first tapping pin formula one way valves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment: well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, and the periphery of described sucker rod connector is fixedly installed one or more cone seal rubber bowl successively, the first tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described first tapping pin formula one way valve comprises the first spring base, first spool, first valve rod and the first valve seat, first spring base is arranged in the axial central through hole of polished rod connector, first spring base is provided with axial center hole, described first spool is arranged on the first valve rod, one end of first valve rod is placed through in the axial center hole of the first spring base slidably, the first valve rod between first spring base and the first spool has placed spring, the first valve seat coordinated with the first spool is provided with in the axial central through hole of the polished rod connector outside described first spring base, first tapping pin formula one way valve is by connecting one end of polished rod and connect or the change in displacement unloading polished rod to drive the first valve rod controlling the switch of the first tapping pin formula one way valve at polished rod connector, sucker rod connector is provided with the first radial direction through hole be connected with the input of the first tapping pin formula one way valve, described polished rod connector is provided with the second radial direction through hole be connected with the output of the first tapping pin formula one way valve, arrange the second tapping pin formula one way valve in the axial central through hole of polished rod connector, the second tapping pin formula one way valve is positioned at the left side of the first tapping pin formula one way valve, described second tapping pin formula one way valve comprises the second spring base, second spool, second valve rod and the second valve seat, second spring base is arranged in the axial central through hole of polished rod connector, second spring base is provided with axial center hole, described second spool is arranged on the second valve rod, one end of second valve rod is placed through in the axial center hole of the second spring base slidably, the second valve rod between second spring base and the second spool has placed spring, the second valve seat coordinated with the second spool is provided with in the axial central through hole of the polished rod connector outside described second spring base, described polished rod connector is provided with the 3rd radial direction through hole be connected with the output of the second tapping pin formula one way valve.The right-hand member of the second valve rod contacts with the left end of the first valve rod.
Operating principle describes: because the left end of the first valve rod contacts with the right-hand member of the second valve rod, first valve rod drives the second stem movement, the utility model is by arranging two tapping pin formula one way valves, can guarantee open for a pair when having at least in the first valve rod after polished rod is threaded into the polished rod connector of well mouth oil pipe plugging device and the first valve seat, the second valve rod and the second valve seat, even if one of them tapping pin formula one way valve is because the elastic coefficient changes and causes working, another tapping pin formula one way valve can also normally work.
Claims (1)
1. a well mouth oil pipe plugging device, comprise polished rod connector and sucker rod connector, polished rod connector and sucker rod connector are provided with axial central through hole, be threaded between polished rod connector and sucker rod connector, the outer end of polished rod connector is provided with the internal thread for connecting polished rod, the outer end of described sucker rod connector is provided with the internal thread for connecting with pumping rod, and the periphery of described sucker rod connector is fixedly installed one or more cone seal rubber bowl successively, the first tapping pin formula one way valve is provided with in the axial central through hole of described polished rod connector, described first tapping pin formula one way valve comprises the first spring base, first spool, first valve rod and the first valve seat, first spring base is arranged in the axial central through hole of polished rod connector, first spring base is provided with axial center hole, described first spool is arranged on the first valve rod, one end of first valve rod is placed through in the axial center hole of the first spring base slidably, the first valve rod between first spring base and the first spool has placed spring, the first valve seat coordinated with the first spool is provided with in the axial central through hole of the polished rod connector outside described first spring base, first tapping pin formula one way valve is by connecting one end of polished rod and connect or the change in displacement unloading polished rod to drive the first valve rod controlling the switch of the first tapping pin formula one way valve at polished rod connector, sucker rod connector is provided with the first radial direction through hole be connected with the input of the first tapping pin formula one way valve, described polished rod connector is provided with the second radial direction through hole be connected with the output of the first tapping pin formula one way valve, it is characterized in that, arrange the second tapping pin formula one way valve in the axial central through hole of polished rod connector, the second tapping pin formula one way valve is positioned at the left side of the first tapping pin formula one way valve, described second tapping pin formula one way valve comprises the second spring base, second spool, second valve rod and the second valve seat, second spring base is arranged in the axial central through hole of polished rod connector, second spring base is provided with axial center hole, described second spool is arranged on the second valve rod, one end of second valve rod is placed through in the axial center hole of the second spring base slidably, the second valve rod between second spring base and the second spool has placed spring, the second valve seat coordinated with the second spool is provided with in the axial central through hole of polished rod connector, described polished rod connector is provided with the 3rd radial direction through hole be connected with the output of the second tapping pin formula one way valve, the right-hand member of the second valve rod contacts with the left end of the first valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173679.4U CN204646167U (en) | 2015-03-25 | 2015-03-25 | A kind of well mouth oil pipe plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173679.4U CN204646167U (en) | 2015-03-25 | 2015-03-25 | A kind of well mouth oil pipe plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204646167U true CN204646167U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520173679.4U Expired - Fee Related CN204646167U (en) | 2015-03-25 | 2015-03-25 | A kind of well mouth oil pipe plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204646167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886588A (en) * | 2018-09-11 | 2020-03-17 | 中国石油天然气股份有限公司 | Simple well mouth plugging tool for coal bed gas well |
-
2015
- 2015-03-25 CN CN201520173679.4U patent/CN204646167U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886588A (en) * | 2018-09-11 | 2020-03-17 | 中国石油天然气股份有限公司 | Simple well mouth plugging tool for coal bed gas well |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160325 |