CN202090882U - Multifunctional low-pressure oil-leaking and oil-losing layer protecting device - Google Patents
Multifunctional low-pressure oil-leaking and oil-losing layer protecting device Download PDFInfo
- Publication number
- CN202090882U CN202090882U CN2011200822421U CN201120082242U CN202090882U CN 202090882 U CN202090882 U CN 202090882U CN 2011200822421 U CN2011200822421 U CN 2011200822421U CN 201120082242 U CN201120082242 U CN 201120082242U CN 202090882 U CN202090882 U CN 202090882U
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- oil
- central tube
- threaded
- downside
- leaking
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Abstract
The utility model relates to an underground tool for oilfield industry, in particular to a multifunctional low-pressure oil-leaking and oil-losing layer protecting device, which comprises a center pipe. The multifunctional low-pressure oil-leaking and oil-losing layer protecting device is characterized in that a packer component and a backflow-preventive bottom component are arranged on the periphery of the center pipe from top to bottom, the packer component is connected with the backflow-preventive bottom component in a threaded manner, the packer component seals the center pipe and prevents flushing liquid from leaking into a stratum from an annular gap between the center pipe and a well hole, the pressure of liquid in the well hole on an oil layer is reduced advantageously, liquid supply capacity of the oil layer can be improved, and the backflow-preventive portion adopts a structure consisting of a one-way ball valve which is arranged at the peripheral edge of a valve body, prevents the flushing liquid from flowing back to the stratum and simultaneously prevents falling objects from blocking an oil production channel, and the service life of the multifunctional low-pressure oil-leaking and oil-losing layer protecting device can be prolonged advantageously.
Description
(1) technical field
The utility model relates to the downhole tool of a kind of oil field industry, and the oil reservoir multifunctional protection device is lost in particularly a kind of low pressure leakage of oil.
(2) background technology
At present, along with the exploitation day by day of oilbearing stratum, it is low that strata pressure appears in the oil well that has, and flushing fluid is easily missed and recharged the stratum during pump detection and workover, and the back pressure oil reservoir causes stratum feed flow deficiency.And but existing downhole tool junk when solving flushing fluid to recharge the stratum has been buried bottom valve, has stopped up the oil recovery passage, has shortened production cycle, has correspondingly increased the crude oil production cost, and economic benefit descends.The production scene can prevent when being badly in need of a kind of well-flushing that flushing fluid from recharging the stratum and can prevent that again junk from stopping up the downhole tool of oil recovery passage.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, provide a kind of can prevent flushing fluid pour in down a chimney, prevent junk stop up the oil recovery passage the low pressure leakage of oil lose the oil reservoir multifunctional protection device.
The utility model is achieved by the following technical solution:
The oil reservoir multifunctional protection device is lost in a kind of low pressure leakage of oil, comprises central tube, it is characterized in that: described central tube periphery is provided with packing parts and the anti-bottom parts that pours in down a chimney from top to bottom, the packing parts with prevent that pouring in down a chimney bottom parts is connected by screw thread.
More excellent scheme of the present utility model is:
Described packing parts comprise and are positioned at the top connection that the top is threaded with central tube, the top connection downside gland that has been threaded, the outer gland downside of central tube slides cartridge is arranged, the cartridge downside is provided with glue tube base and centrum, glue tube base is threaded with centrum, the centrum downside slips body that has been threaded successively, adapter sleeve, the upper limit cover, centralizer body, the lower limit cover, slide in the dovetail groove of slips body upper end slips is arranged, be equipped with in the groove of centralizer body upside and set upright the wiper block that spring contacts, centralizer body downside central tube is with sliding sleeve outward, the sliding sleeve downside is provided with the lower contact that is threaded with central tube, and the shank that contacts with little spring is installed in the pin-and-hole of sliding sleeve;
The described anti-end of pouring in down a chimney, formed by joint, valve body, baffle plate, ball-and-seat aggregate erection, and joint is threaded with valve body, and the baffle plate that acts on mutually with spring is housed between joint, the valve body, and the spring tail end is equipped with non-return valve; The tricks of described non-return valve is 8 covers;
Hold under anti-the pouring in down a chimney in the described central tube and be connected with sedimentation pipe and plug in turn.
The beneficial effects of the utility model: below flow string, formed the oil layer protection tubing string.A whole set of tubing string is an one-way sealing, can avoid the convection current of tubing string top and the bottom pit shaft liquid, reduce the back pressure of tubing string top pit shaft liquid, can improve the fluid supply capacity on stratum the stratum, and can prevent effectively that the pit shaft junk from stopping up the oil recovery passage, prevent that dirt from stopping up oil reservoir.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is that tubing string of the present utility model connects the use schematic diagram;
Among the figure, 1 top connection, 2 glands, 3 cartridge, 4 glue tube bases, 5 centrums, 6 slips, 7 slips bodies, 8 adapter sleeves, 9 wiper blocks, 10 centralizer bodies, 11 lower limit covers, 12 shanks, 13 sliding sleeves, 14 lower contacts, 15 central tubes, 16 set upright spring, 17 little springs, 18 upper limit covers, 19 joints, 20 valve bodies, 21 baffle plates, 22 non-return valves, 23 springs, 24 sedimentation pipes, 25 plugs.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises that a kind of low pressure leakage of oil loses the oil reservoir multifunctional protection device, comprises central tube 15, and it is characterized in that: described central tube 15 peripheries are provided with packing parts and the anti-bottom parts that pours in down a chimney from top to bottom, the packing parts with prevent that pouring in down a chimney bottom parts is connected by screw thread; Described packing parts comprise and are positioned at the top connection 1 that the top is threaded with central tube 15, the top connection 1 downside gland 2 that has been threaded, central tube 15 outer gland 2 downsides slide cartridge 3 are arranged, cartridge 3 downsides are provided with glue tube base 4 and centrum 5, glue tube base) is threaded with centrum 5, the centrum 5 downsides slips body 7 that has been threaded successively, adapter sleeve 8, upper limit cover 18, centralizer body 10, lower limit cover 11, slide in the dovetail groove of slips body 7 upper ends slips 6 is arranged, be equipped with in the groove of centralizer body 10 upsides and set upright the wiper block 9 that spring 16 contacts, the centralizer body 10 downside central tubes 15 outer sliding sleeves 13 that are with, sliding sleeve 13 downsides are provided with the lower contact 14 that is threaded with central tube 15, and the shank 12 that contacts with little spring 17 is installed in the pin-and-hole of sliding sleeve 13; The described anti-end of pouring in down a chimney, formed by joint 19, valve body 20, baffle plate 21, non-return valve 22 aggregate erections, and joint 19 is threaded with valve body 20, and the baffle plate 21 that acts on mutually with spring 23 is housed between joint 19, the valve body 20, and spring 23 tail ends are equipped with non-return valve 22; The tricks of described non-return valve 22 is 8 covers; Hold under anti-the pouring in down a chimney in the described central tube 15 and be connected with sedimentation pipe 24 and plug 25 in turn.
Adopt low pressure leakage of oil of the present utility model to lose the oil reservoir multifunctional protection device; with oil pipe low pressure is missed the down well placement that the oil reservoir multifunctional protection device is transported to design during operation; carry on adopting then, rotate, transfer, pitching, the method suppressed be anchored in the pit shaft low pressure leakage oil reservoir multifunctional protection device, cartridge 3 compression seal pit shafts simultaneously.Prevent that pit shaft liquid is from the stratum of bleeding of the annular clearance between central tube 15 and the pit shaft.When following pump is produced, anti-ly pour in down a chimney bottom valve under the swabbing action of base pressure and pump, non-return valve 22 is up, makes to prevent pouring in down a chimney bottom valve and open and produce.When clean-out service, non-return valve 22 falls back to bottom position under the effect of spring 23 and current, and non-return valve 22 and bottom sealing prevent that flushing fluid from recharging the stratum.When needs propose device, production center pipe 15 is at first proposed, connect special-purpose fishing tool with central tube 15 and dock with the fishing head of device, on carry deblocking, the proposition device.
Claims (5)
1. the oil reservoir multifunctional protection device is lost in a low pressure leakage of oil, comprises central tube (15), it is characterized in that: described central tube (15) periphery is provided with packing parts and the anti-bottom parts that pours in down a chimney from top to bottom, the packing parts with prevent that pouring in down a chimney bottom parts is connected by screw thread.
2. the oil reservoir multifunctional protection device is lost in low pressure leakage of oil according to claim 1; it is characterized in that: described packing parts comprise and are positioned at the top connection (1) that the top is threaded with central tube (15); top connection (1) the downside gland (2) that has been threaded; the outer gland of central tube (15) (2) downside slides cartridge (3); cartridge (3) downside is provided with glue tube base (4) and centrum (5); glue tube base (4) is threaded with centrum (5); centrum (5) the downside slips body (7) that has been threaded successively; adapter sleeve (8); upper limit cover (18); centralizer body (10); lower limit cover (11); slide in the dovetail groove of slips body (7) upper end slips (6) is arranged; be equipped with in the groove of centralizer body (10) upside and set upright the wiper block (9) that spring (16) contacts; the outer sliding sleeve (13) that is with of centralizer body (10) downside central tube (15); sliding sleeve (13) downside is provided with the lower contact (14) that is threaded with central tube (15), and the shank (12) that contacts with little spring (17) is installed in the pin-and-hole of sliding sleeve (13).
3. the oil reservoir multifunctional protection device is lost in low pressure leakage of oil according to claim 1; it is characterized in that: the described anti-end of pouring in down a chimney, formed by joint (19), valve body (20), baffle plate (21), non-return valve (22) aggregate erection; joint (19) is threaded with valve body (20); the baffle plate (21) that acts on mutually with spring (23) is housed between joint (19), the valve body (20), and spring (23) tail end is equipped with non-return valve (22).
4. the oil reservoir multifunctional protection device is lost in low pressure leakage of oil according to claim 3, it is characterized in that: the tricks of described non-return valve (22) is 8 covers.
5. lose the oil reservoir multifunctional protection device according to claim 1 or 2 or 3 described low pressure leakage of oils, it is characterized in that: hold under anti-the pouring in down a chimney in the described central tube (15) to be connected with sedimentation pipe (24) and plug (25) in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200822421U CN202090882U (en) | 2011-03-25 | 2011-03-25 | Multifunctional low-pressure oil-leaking and oil-losing layer protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200822421U CN202090882U (en) | 2011-03-25 | 2011-03-25 | Multifunctional low-pressure oil-leaking and oil-losing layer protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090882U true CN202090882U (en) | 2011-12-28 |
Family
ID=45365955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200822421U Expired - Fee Related CN202090882U (en) | 2011-03-25 | 2011-03-25 | Multifunctional low-pressure oil-leaking and oil-losing layer protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090882U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869114A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | A kind of packing formula stage cementing device and its operational method |
-
2011
- 2011-03-25 CN CN2011200822421U patent/CN202090882U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869114A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | A kind of packing formula stage cementing device and its operational method |
| CN109869114B (en) * | 2017-12-01 | 2021-09-17 | 中石化石油工程技术服务有限公司 | Packing type stage cementing device and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120325 |