CN203201536U - Device for automatically recovering oil gas in oil-producing wellhead casing - Google Patents
Device for automatically recovering oil gas in oil-producing wellhead casing Download PDFInfo
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- CN203201536U CN203201536U CN 201320179615 CN201320179615U CN203201536U CN 203201536 U CN203201536 U CN 203201536U CN 201320179615 CN201320179615 CN 201320179615 CN 201320179615 U CN201320179615 U CN 201320179615U CN 203201536 U CN203201536 U CN 203201536U
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- oil gas
- pump barrel
- oil
- pump
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Abstract
The utility model relates to a device for automatically recovering oil gas in an oil-producing wellhead casing. The device is provided with a piston pump which consists of a pump cylinder, a piston rod, a piston, a piston seal and a spring, wherein the piston rod, the piston, the piston seal and the spring are arranged in the pump cylinder; the bottom part of the pump cylinder is connected onto a large four-way blind flange of a wellhead Christmas tree by a threaded rod and a clamp nut; the top part of the pump cylinder is provided with an end cover and a pressing cap; a seal packing is arranged between the end cover and the pressing cap; the outer side of the pump cylinder is provided with an upper check valve and a lower check valve connected with an inner cavity of the pump cylinder; and the extension end of the piston rod in the pump cylinder is in contact connection with an external piston power rack. The device is capable of delivering the oil gas in the casing into a flow line by utilizing the power of a pumping unit, can runs all year round, automatically controls and recovers the oil gas and does not need to be managed, and therefore, the working condition of the pumping unit is improved. The device is capable of recovering the oil gas in the casing instead of a raw tank truck or a power-driven oil recovery vehicle, and the oil gas in the annular space of an oil jacket is conveyed in the flow line of the upper check valve in the piston pump, and therefore, the goals that the oil gas is automatically recovered and the production cost is saved are achieved.
Description
Technical field
The utility model belongs to well mouth of oil well valve member technical field, specifically a kind of producing well head casing oil gas automatic recycling device that is applicable to oilfield.
Background technology
Producing well is adjusted the production oil reservoir according to the variation of oil well production in process of production, the oil reservoir that usually adopts mechanical method to come shutoff to stop adopting.After uppermost oil reservoir stops adopting shutoff in the pit shaft, because the energy on stratum is restored, the liquid level of the oil sets annular space in the part well shaft rises to well head, have certain pressure, when the pressure in the pit shaft was lower than saturation pressure, the natural gas in the crude oil was separated from crude oil, because oil gas proportion is different, the natural gas that is not plucked out of rises to oil sets annular space top, forms certain pressure at well head, and this pressure is called casing pressure.When casing pressure was higher than well mouth oil pipe pressure, mounting sleeve vent valve between sleeve valve and flow line made in the sleeve pipe oil gas enter flow line by self pressure, reaches the purpose of volume increase and control oil sets annular space liquid level.When casing pressure was lower than well mouth oil pipe pressure, sleeve pipe oil gas can not enter oil pipe, needed regularly to use tank car or motor-driven receipts oil car recovery of casing oil, and cost of production is high.
Summary of the invention
The purpose of this utility model provides and a kind ofly can substitute former tank car or motor-driven receipts oil car recovery of casing oil gas, the producing well head casing oil gas automatic recycling device that reduces production costs.
Realize that the technical scheme that the purpose of this utility model is taked is: this device has a piston pump, formed by the piston rod in pump barrel and the pump barrel, piston, piston packing and spring, wherein, the pump barrel bottom is connected on the big four blind flange of well head production tree by screw rod and clamp nut, the pump barrel top is provided with end cap and pressure cap, between end cap and the pressure cap sealed packing is housed, the pump barrel outside is provided with the upper and lower ball-and-seat that links to each other by with the pump barrel inner chamber, and the external part of pump barrel inner piston rod is connected with outside piston power bridge joint is tactile.
Described piston power frame is comprised of pressing plate and support, and wherein, the pressing plate correspondence is positioned at the top of piston rod, and is connected with piston rod contact, and pressing plate is connected also interlock by support with optical-rod clamp on the pumping well polish rod.
Described upper ball-and-seat is comprised of outlet connection, upper valve ball, upper ball base and the upper sealing mat of successively assembling, and wherein, outlet connection links to each other with wellhead flowline by high-pressure hose, and upper ball base is provided with the opening that is communicated with the pump barrel inner chamber.
Described lower ball-and-seat forms by assembling successively inlet union, lower compression back-up ring, lower seal pad, lower ball base and lower valve ball, and wherein, inlet union links to each other with the wellhead casing pipe valve by high-pressure hose, and lower ball base is provided with the opening that is communicated with the pump barrel inner chamber.
The producing well head casing oil gas automatic recycling device of making according to such scheme, can utilize the oil pumper self power that the oil gas in the sleeve pipe is sent into flow line, can turn round throughout the year, automatically oil gas is reclaimed in control, need not management, improved thus working conditions of oil extractor, alternative former tank car or motor-driven receipts oil car recovery of casing oil gas, allow the upper and lower ball-and-seat of oil gas from piston pump of oil jacket annular space carry the purpose that reach the automatic recovery, saves production cost into and out of pipeline.The advantages such as compared with prior art, this device has simple in structure, and is easy to use, safe and reliable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Producing well head casing oil gas automatic recycling device of the present utility model, this device has a piston pump, formed by the piston rod 14 in pump barrel 10 and the pump barrel, piston 15, piston packing 16 and spring 17, wherein, the bottom of pump barrel 10 is connected on the big four blind flange 23 of well head production tree by screw rod 25 and clamp nut 24, can weld between screw rod 25 and the pump barrel 10 and be connected as a single entity, screw rod 25 is installed in the connecting screw hole on the big four blind flange 23, tighten with clamp nut 24 and get final product.The top of pump barrel 10 is provided with end cap 11 and pressure cap 12, between end cap 11 and the pressure cap 12 sealed packing 13 is housed, the outside of pump barrel 10 is provided with the upper and lower ball-and-seat that links to each other by with pump barrel 10 inner chambers, the external part of pump barrel 10 inner piston rods 14 is connected with outside piston power bridge joint is tactile, this piston power frame is comprised of pressing plate 18 and support 19, wherein, pressing plate 18 correspondences are positioned at the top of piston rod 14, and is connected with piston rod 14 contact, pressing plate 18 is connected also interlock by support 19 with optical-rod clamp 20 on the pumping well polish rod 21.Described upper ball-and-seat is comprised of outlet connection 9, upper valve ball 8, upper ball base 7 and the upper sealing mat 6 of successively assembling, wherein, outlet connection 9 is by the high-pressure hose (not shown) that links to each other with wellhead flowline, and upper ball base 7 is provided with the opening that is communicated with pump barrel 10 inner chambers.Described lower ball-and-seat is comprised of inlet union 1, lower compression back-up ring 2, lower seal pad 3, lower ball base 4 and the lower valve ball 5 of successively assembling, wherein, inlet union 1 is by the high-pressure hose (not shown) that links to each other with the wellhead casing pipe valve, and lower ball base 4 is provided with the opening that is communicated with pump barrel 10 inner chambers.
Operating principle: the piston power frame is fixed on the pumping well polish rod 21 by optical-rod clamp 20, be synchronized with the movement with the polished rod reciprocating motion, when pumping well polish rod 21 moves to the bottom, band dynamic pressure plate 18 descending compression piston bars 14, make piston 15 descending, spring 17 in the pump barrel 10 is compressed, and the pump barrel inner volume reduces, pressure rise.Because the well head oil pressure is higher than casing pressure, goes up ball-and-seat when piston 15 is not compressed and in the piston 15 compressed whole descending processes and be in all the time closed condition.Piston 15 continues descending, and pressure continues to rise, and when pump barrel 10 internal pressures during greater than the well head oil pressure, the upper valve ball 8 of upper ball-and-seat is backed down, and pump barrel 10 interior oil gas enter flow line.When pumping well polish rod 21 is up, pressing plate 18 leaves piston rod 14, piston 15 moves up under 17 effects of bottom spring, pump barrel 10 inner volumes increase, pressure drop, when being lower than oil pressure, the upper valve ball 8 of upper ball-and-seat is closed, piston 15 continues to move up, and when the pressure of wellhead casing pipe was higher than pump barrel 10 internal pressure, the lower valve ball 5 of lower ball-and-seat was backed down, oil gas enters pump barrel 10, pumping well polish rod 21 pumps once, and the piston rod 14 of this device also moves back and forth once, finishes once pump gas and oil extraction gas process.When making the sleeve pipe oil gas of low-pressure enter in the high flow line of pressure, can take full advantage of the power of oil pumper self, reach the purpose of the automatic recovery sleeve pipe oil gas.
Claims (4)
1. producing well head casing oil gas automatic recycling device, it is characterized in that: this device has a piston pump, formed by the piston rod in pump barrel and the pump barrel, piston, piston packing and spring, wherein, the pump barrel bottom is connected on the big four blind flange of well head production tree by screw rod and clamp nut, the pump barrel top is provided with end cap and pressure cap, between end cap and the pressure cap sealed packing is housed, the pump barrel outside is provided with the upper and lower ball-and-seat that links to each other by with the pump barrel inner chamber, and the external part of pump barrel inner piston rod is connected with outside piston power bridge joint is tactile.
2. producing well head casing oil gas automatic recycling device according to claim 1, it is characterized in that: described piston power frame is comprised of pressing plate and support, wherein, the pressing plate correspondence is positioned at the top of piston rod, and is connected with piston rod contact, pressing plate is connected also interlock by support with optical-rod clamp on the pumping well polish rod.
3. producing well head casing oil gas automatic recycling device according to claim 1, it is characterized in that: described upper ball-and-seat is comprised of outlet connection, upper valve ball, upper ball base and the upper sealing mat of successively assembling, wherein, outlet connection links to each other with wellhead flowline by high-pressure hose, and upper ball base is provided with the opening that is communicated with the pump barrel inner chamber.
4. producing well head casing oil gas automatic recycling device according to claim 1, it is characterized in that: described lower ball-and-seat forms by assembling successively inlet union, lower compression back-up ring, lower seal pad, lower ball base and lower valve ball, wherein, inlet union links to each other with the wellhead casing pipe valve by high-pressure hose, and lower ball base is provided with the opening that is communicated with the pump barrel inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320179615 CN203201536U (en) | 2013-04-11 | 2013-04-11 | Device for automatically recovering oil gas in oil-producing wellhead casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320179615 CN203201536U (en) | 2013-04-11 | 2013-04-11 | Device for automatically recovering oil gas in oil-producing wellhead casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201536U true CN203201536U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320179615 Expired - Fee Related CN203201536U (en) | 2013-04-11 | 2013-04-11 | Device for automatically recovering oil gas in oil-producing wellhead casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573216A (en) * | 2013-10-29 | 2014-02-12 | 陕西延长石油(集团)有限责任公司研究院 | Automatic dosing device of mechanical wellhead of sucker rod pump pumping well |
-
2013
- 2013-04-11 CN CN 201320179615 patent/CN203201536U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573216A (en) * | 2013-10-29 | 2014-02-12 | 陕西延长石油(集团)有限责任公司研究院 | Automatic dosing device of mechanical wellhead of sucker rod pump pumping 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 |
Granted publication date: 20130918 Termination date: 20150411 |
|
| EXPY | Termination of patent right or utility model |