CN203808886U - Self-vibration unchoking tubing string with functions of sand prevention and oil increase - Google Patents
Self-vibration unchoking tubing string with functions of sand prevention and oil increase Download PDFInfo
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- CN203808886U CN203808886U CN201420232914.6U CN201420232914U CN203808886U CN 203808886 U CN203808886 U CN 203808886U CN 201420232914 U CN201420232914 U CN 201420232914U CN 203808886 U CN203808886 U CN 203808886U
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- tubing string
- plug
- vibration
- oil
- sand
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Abstract
The utility model discloses a self-vibration unchoking tubing string with functions of sand prevention and oil increase. The self-vibration unchoking tubing string with the functions of sand prevention and oil increase mainly comprises an upper joint, a core pipe, a rubber sealer lower joint and a screwed plug, wherein the rubber sealer lower joint is connected with the core pipe which is connected with the upper joint; one end of an excitation vibrating reed set is connected with the rubber sealer lower joint while the other end of the excitation vibrating reed set is connected with a vibration valve through a lower joint of the excitation vibrating reed set; one end of a two-way connector is connected with the vibration valve through a vibration valve bonnet while the other end of the two-way connector is connected with a sand setting pipe column through a lower joint, and the two-way connector is provided with an oil inlet hole, an exhaust hole and an oil inlet passage; a center pipe is fixedly connected onto the two-way connector and communicated with the oil inlet hole and the exhaust hole, a screw plate set is arranged outside the center pipe, and a gap is reserved between the center pipe and the screwed plug; a gap is reserved between the screw plate set and the sand setting pipe column; the oil inlet hole can be communicated with the upper joint. The self-vibration unchoking tubing string with the functions of sand prevention and oil increase has the advantages of simple structure, reliability in operation and functions of vibration unchoking and sand prevention.
Description
Technical field
The utility model relates to a kind of down-hole string, especially by top connection, the auto-oscillation plug-removing sand control that forms of the core pipe being connected with top connection, the colloid seal device lower contact being connected with core pipe and plug increases tubing string.
Background technology
Enter the exploitation later stage with oil field, how to remove oil well and stop up and reduce the sand content in fluid, thereby improve well yield and ultimate recovery, become the problem that each oil field must solve.In oil extraction process of oil well, usually occur at present that oil well stops up and fluid in contain a large amount of sand situation, the operating cost such as a large amount of sand that contain in fluid, easily cause the sand card of oil well pump, and sand buries, increase well-flushing, greatly reduces oil recovery efficiency.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, reliable operation and can vibration unplugging and the auto-oscillation plug-removing sand control with sand-proof function increase tubing string.
For achieving the above object, auto-oscillation plug-removing sand control of the present utility model increases that tubing string comprises top connection, the core pipe being connected with top connection, the lower contact of colloid seal device and the plug being connected with core pipe, excited vibration sheet group one end is connected with the lower contact of colloid seal device, and the other end is connected with vibrating valve by the lower contact of vibrating reed group; Duplex fitting one end is connected with vibrating valve by vibration valve bonnet, and the other end is connected with sand setting tubing string by lower contact, is provided with fuel feed hole, air vent and oil inlet passage in described duplex fitting; Central tube is fixedly connected in duplex fitting and is communicated with fuel feed hole and air vent, and the arranged outside of described central tube has flight group, between central tube and plug, leaves gap; Between described flight group and sand setting tubing string, leave gap; Described fuel feed hole can be communicated with top connection.
Plug is dismountable to be connected on sand setting tubing string.
Core pipe arranged outside has colloid seal device.
Colloid seal device is made up of fluorubber.
The utility model auto-oscillation plug-removing sand control increases tubing string and is connected to oil well pump lower end by top connection, in the pumping of oil pumper, fluid column load alternating action in oil pipe is in the bottom of oil pipe, make down-hole liquid repeatedly clash into excited vibration sheet group and vibrating valve, cause that excited vibration sheet group and vibrating valve produce vibration, the vibration that excited vibration sheet group and vibrating valve produce is imported oil reservoir into by sound wave, makes oil reservoir produce vibration, thereby improve the seepage flow situation of oil reservoir, remove oil layer blocking.The fluid that contains sand grains and gas enters after central tube by fuel feed hole, gas can be got rid of by air vent, reduce gas oil content, when the fluid that contains sand grains enters top connection by flight group and the oily passage of mistake, because the proportion of sand grains and fluid is different and the iris action of flight group, sand grains can not enter top connection by the oily passage of mistake and be deposited on the space between central tube and plug, disassembles the plug that is connected to sand setting tubing string, just the sand grains of deposition can be discharged.
Brief description of the drawings
Fig. 1 is the structural representation that auto-oscillation plug-removing sand control increases tubing string.
Top connection 1, colloid seal device 2, core pipe 3, colloid seal device lower contact 4, excited vibration sheet group 5, vibrating reed group lower contact 6, vibrating valve 7, vibration valve bonnet 8, air vent 9, duplex fitting 10, fuel feed hole 11, lower contact 12, sand setting tubing string 13, central tube 14, flight group 15, plug 16, oil inlet passage 17.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The sand control of auto-oscillation plug-removing shown in Fig. 1 increases tubing string, the core pipe 3 that comprises top connection 1, be connected with top connection 1, the lower contact 4 of colloid seal device and the plug 16 being connected with core pipe 3, excited vibration sheet group 5 one end are connected with colloid seal device lower contact 4, and the other end is connected with vibrating valve 7 by the lower contact 6 of vibrating reed group; Duplex fitting 10 one end are connected with vibrating valve 7 by vibration valve bonnet 8, and the other end is connected with sand setting tubing string 13 by lower contact 12, is provided with fuel feed hole 11, air vent 9 and oil inlet passage 17 in described duplex fitting 10; Central tube 14 is fixedly connected in duplex fitting 10 and is communicated with fuel feed hole 11 and air vent 9, and the arranged outside of described central tube 14 has flight group 15, between central tube 14 and plug 16, leaves gap; Between described flight group 15 and sand setting tubing string 13, leave gap, can make crude oil pass through to intercept sand grains; Described fuel feed hole 11 can be communicated with top connection 1 by central tube 14, sand setting tubing string 13, oil inlet passage 17, vibrating valve 7, excited vibration sheet group 5 and colloid seal device 2; Plug 16 is dismountable to be connected on sand setting tubing string 13; Core pipe 3 arranged outside have colloid seal device 2; Colloid seal device 2 is made up of the fluorubber of high temperature resistant, wear-resisting and resisting sulfide.
When use, by top connection 1, auto-oscillation plug-removing sand control is increased to tubing string and be connected to oil well pump lower end, and G.I.H, downhole crude enters central tube 14 from the fuel feed hole 11 of duplex fitting 10, crude oil and sand are along central tube 14 to plug 16 direction operations, due to the iris action of proportion difference and flight group 15 each other, crude oil is along central tube 14 external spiral sheet groups 15 to duplex fitting 10 direction operations, enter the oily passage 17 of mistake of duplex fitting 10, vibrating valve 7 and core pipe 3 etc. enter oil well pump, make it complete normal oil pumping work, sand grains deposits in the gap between central tube 14 and plug 16, and gas is discharged by the air vent 9 in duplex fitting 10 in central tube 14, thereby play gas-tight, sand controlling result.
In the manufacturing process of recovering the oil, fluid column load in down-hole oil tube with up-down stroke alternating action on oil pipe, make oil pipe bear fluctuating load frequently, generation recurrent pulses formula is extended and is shunk, and the auto-oscillation plug-removing sand control increasing tubing string that band is automatically connected in oil well pump lower end does the reciprocating motion of recurrent pulses formula.Increase in the longitudinal reciprocating process of tubing string at auto-oscillation plug-removing sand control, the highly pressurised liquid of annulus clashes into vibrating reed group 5 and vibrating valve 7 in the other direction, excited vibration sheet group 5 and vibrating valve 7 produce vibration, excited vibration sheet group 5 and vibrating valve 7 produce vibration the Impact energy of highly pressurised liquid are converted into Wave energy, are conducted into oil reservoir by the mode of sound wave, and excitation oil reservoir shakes, thereby improve the seepage flow situation of oil reservoir, remove oil layer blocking, increase well yield, improve tar productivity.
Claims (4)
1. an auto-oscillation plug-removing sand control increases tubing string, the core pipe that comprises top connection, be connected with top connection, the lower contact of colloid seal device and the plug being connected with core pipe, it is characterized in that: excited vibration sheet group one end is connected with the lower contact of colloid seal device, and the other end is connected with vibrating valve by the lower contact of vibrating reed group; Duplex fitting one end is connected with vibrating valve by vibration valve bonnet, and the other end is connected with sand setting tubing string by lower contact, is provided with fuel feed hole, air vent and oil inlet passage in described duplex fitting; Central tube is fixedly connected in duplex fitting and is communicated with fuel feed hole and air vent, and the arranged outside of described central tube has flight group, between central tube and plug, leaves gap; Between described flight group and sand setting tubing string, leave gap; Described fuel feed hole can be communicated with top connection.
2. auto-oscillation plug-removing sand control according to claim 1 increases tubing string, it is characterized in that: plug is dismountable to be connected on sand setting tubing string.
3. auto-oscillation plug-removing sand control according to claim 1 increases tubing string, it is characterized in that: core pipe arranged outside has colloid seal device.
4. auto-oscillation plug-removing sand control according to claim 3 increases tubing string, it is characterized in that: colloid seal device is made up of fluorubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232914.6U CN203808886U (en) | 2014-05-02 | 2014-05-02 | Self-vibration unchoking tubing string with functions of sand prevention and oil increase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420232914.6U CN203808886U (en) | 2014-05-02 | 2014-05-02 | Self-vibration unchoking tubing string with functions of sand prevention and oil increase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808886U true CN203808886U (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420232914.6U Expired - Fee Related CN203808886U (en) | 2014-05-02 | 2014-05-02 | Self-vibration unchoking tubing string with functions of sand prevention and oil increase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203808886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10641049B2 (en) | 2018-09-10 | 2020-05-05 | China University Of Petroleum-Beijing | Riser stub for acoustic resonance decomposition of hydrate in deepwater drilling |
-
2014
- 2014-05-02 CN CN201420232914.6U patent/CN203808886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10641049B2 (en) | 2018-09-10 | 2020-05-05 | China University Of Petroleum-Beijing | Riser stub for acoustic resonance decomposition of hydrate in deepwater drilling |
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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: 20140903 Termination date: 20150502 |
|
| EXPY | Termination of patent right or utility model |