CN201934055U - Self-setting type tubing plug - Google Patents
Self-setting type tubing plug Download PDFInfo
- Publication number
- CN201934055U CN201934055U CN2011200558306U CN201120055830U CN201934055U CN 201934055 U CN201934055 U CN 201934055U CN 2011200558306 U CN2011200558306 U CN 2011200558306U CN 201120055830 U CN201120055830 U CN 201120055830U CN 201934055 U CN201934055 U CN 201934055U
- Authority
- CN
- China
- Prior art keywords
- central tube
- slips
- piston
- tubing plug
- lower piston
- 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
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
A self-setting type tubing plug comprises an upper slip support, an outer center tube, an inner center tube, slips, a slip support, a lock ball, a rubber barrel, a setting shear pin, a rubber barrel press cap, a cylinder sleeve, an opening clamp ring, an upper piston, a liquid inlet, a lower piston and a tail casing. The outer center tube is mounted outside the inner center tube, the upper slip support, the slips, the slip support, the rubber barrel, the rubber barrel press cap, the cylinder sleeve, the upper piston and the tail casing are successively mounted outside the outer center tube, the lower piston is mounted between the outer center tube and the tail casing, a pressure cavity is formed above the lower piston, and a constant-pressure air cavity is formed below the lower piston. The self-setting type tubing plug can realize long-term tubing sealing and secondary tubing sealing effects, has the advantages of capabilities of avoiding potential safety hazards, realizing gravity feeding and omitting conveying equipment, convenience in construction and low cost and the like, and is widely applied to well control equipment during operation of oilfield oil-water wells.
Description
Technical field
The present invention relates to the oil-water well well-control equipment of petroleum industry underground work, particularly a kind of from setting the formula tubing plug.
Background technology
At present, the oil pipe obstruction method and the equipment of the oil-water well well-control equipment of petroleum industry underground work, adopt more hollow section or continuously pipe blanking plug is delivered to the oil pipe desired depth, by hollow section or manage the ground well head continuously and suppress blanking plug is set, the sealing oil pipe.This tubing plug is that the oil-water well well control of petroleum industry underground work has been brought into play effect, but this oil-water well blanking plug exists following shortcoming or deficiency: after 1. setting, packing element sealing force, slips clamping force are fixed, and can't change; 2. if blanking plug sets the fouling position in oil pipe just, then slips can not tighten the oil pipe body, if in putting forward the oil pipe process, incrustation scale becomes flexible or comes off, slips and packing element also can become flexible thereupon, can cause oil pipe poorly sealed on the one hand, and slips fails to block the oil pipe body on the other hand, blanking plug flies out from oil pipe, leads to thing; 3. stop up the oil pipe complex procedures, cause operating cost to improve.
Summary of the invention
The purpose of this invention is to provide a kind of from setting the formula tubing plug, adopt the structure that forms pressure chamber and atmospheric air chamber on the lower piston down, utilize the pressure reduction in the interior head of liquid of well and wellhead back pressure and atmospheric air chamber to realize setting of blanking plug, because borehole pressure exists always, even the incrustation scale that the blanking plug slips is tightened comes off, the blanking plug slips still can continue to set, the shortcoming or the deficiency that overcome effectively or avoid existing in the above-mentioned prior art.
Of the present invention from setting the formula tubing plug, comprise upper slips holder, O RunddichtringO, exterior central tube, inner central tube, slips, slips holder, lock ball, packing element, set shear pin, rubber cylinder pressing cap, cylinder sleeve, slotted collar, upper piston, inlet, lower piston, tail sleeve pipe.Described inner central tube is equipped with exterior central tube outward, exterior central tube is equipped with upper slips holder, slips, slips holder, packing element, rubber cylinder pressing cap, cylinder sleeve, upper piston outward in turn, the tail sleeve pipe is connected on the upper piston, lower piston is installed between inner central tube and the tail sleeve pipe, form pressure chamber on the lower piston, form the atmospheric air chamber under the lower piston.
Wherein, described exterior central tube one end is provided with outer lug boss, and this outer lug boss is provided with external screw thread, is connected with the internal thread of upper slips holder.Described inner central tube one end is provided with outer lug boss.Described exterior central tube middle and lower part is provided with the lock ball hole, and lock ball is equipped with lock ball in the hole.The bottom of described slips holder is provided with screw, and this screw is corresponding with the lock ball hole of exterior central tube, and the lock ball hold-down screw is installed in this screw.The corresponding position of described rubber cylinder pressing cap, inner central tube and exterior central tube is provided with installs the hole that sets shear pin.Described upper piston top is connected with cylinder sleeve, and the bottom is connected with the tail sleeve pipe.Described upper piston bottom is provided with interior step, and this interior step contacts with inner central tube and sealed mutually by the O RunddichtringO.The soffit of described slotted collar contacts with the upper surface of upper piston, and the place, inclined-plane of slotted collar upper surface matches with the place, inclined-plane of cylinder sleeve, and the external surface of slotted collar is provided with unidirectional tooth, is meshed with unidirectional tooth on the exterior central tube.Described tail casing shoe is a blind hole structure.
The present invention has following advantage compared with prior art:
1, can seal oil pipe for a long time.When of the present invention from setting after the formula tubing plug drops in the well, the blanking plug pressure chamber is subjected to that lower piston moves down under the effect of head of liquid and wellhead back pressure in the well, lower piston drives inner central tube and moves down, setting shear pin between inner central tube and the exterior central tube fixes, when the suffered power of inner central tube when setting the shear stress of shear pin, produce relative motion between inner central tube and the exterior central tube, setting shear pin cuts off, lower piston continues to move down under the head of liquid effect, make the inner central tube upper end be close to the exterior central tube upper end, after inner central tube ran down to the position, lock ball was rolled into the groove position of inner central tube, lock ball lost efficacy, from
But and make slips holder freely-movable; Meanwhile, head of liquid and wellhead back pressure promote piston compression atmospheric air chamber, and the unidirectional tooth and hair looks on slotted collar and the exterior central tube is to motion.Head of liquid and wellhead back pressure continue to promote lower piston and move down, and lower piston drives inner central tube and the tail union body produces relative motion, and inner central tube promotes slips along slips holder orbiting motion, and slips is opened, and blanking plug is anchored on the tube inner wall.Behind the slips anchoring, head of liquid in the hydraulic cavities and wellhead back pressure promote the required power of lower piston motion and are far longer than the required power of upper piston compression packing element that promotes.Therefore, head of liquid and wellhead back pressure promote to move on the upper piston, the compression packing element, lower piston and tail sleeve pipe produce relative motion, continue compression atmospheric air chamber, slotted collar then continues to move on the unidirectional tooth of exterior central tube, put in place until the packing element compression, snap ring locking exterior central tube and tail sleeve pipe make it that relative motion can not take place, packing element is in compressive state always, thereby can seal oil pipe for a long time.
2, have sealing function once more, avoid potential safety hazard.If slips is stuck in oil pipe fouling position, and carry in the oil pipe process, incrustation scale comes off, then still have a little space between slips and the tube inner wall, at this moment, because head of liquid and wellhead back pressure are being deposited always, pressure continues to act on pressure chamber, by the pressure effect of pressure chamber, of the present invention setting certainly in the continuation of formula tubing plug upper piston moved, lower piston and tail sleeve pipe produce relative motion, continue compression atmospheric air chamber, make slips continue to open, until being clamped on the tube inner wall body, packing element continues compression simultaneously, seals oil pipe once more, avoids blanking plug to fly out from oil pipe.
3, gravity is delivered, and need not conveying equipment, easy construction, and expense is cheap.
Description of drawings
Fig. 1 is a kind of example structure schematic diagram of the present invention;
Fig. 2 is by the local structure for amplifying schematic diagram in A place shown in Figure 1.
The specific embodiment
Consult Fig. 1-Fig. 2, a kind of from setting the formula tubing plug, comprise upper slips holder 1, O RunddichtringO 2, exterior central tube 3, inner central tube 4, slips 5, slips holder 6, lock ball 7, lock ball hold-down screw 8, packing element 9,
Set shear pin 10, rubber cylinder pressing cap 11, cylinder sleeve 12, slotted collar 13, upper piston 14, pressure chamber 15, inlet 16, lower piston 17, atmospheric air chamber 18, tail sleeve pipe 19, it is characterized in that the described inner central tube 4 outer exterior central tubes 3 that are equipped with, upper slips holder 1 is installed outside the exterior central tube 3 in turn, slips 5, slips holder 6, packing element 9, rubber cylinder pressing cap 11, cylinder sleeve 12, upper piston 14, tail sleeve pipe 19 is connected on the upper piston 14, lower piston 17 is installed between inner central tube 4 and the tail sleeve pipe 19, form pressure chamber 15 on the lower piston 17, form atmospheric air chamber 18 under the lower piston 17.
Exterior central tube 3 upper ends are provided with outer lug boss, and this outer lug boss is provided with external screw thread, are connected with the internal thread of upper slips holder 1.Inner central tube 4 one ends are provided with outer lug boss.Exterior central tube 3 middle and lower parts are provided with the lock ball hole, and lock ball 7 is installed in the lock ball hole.The bottom of slips holder 6 is provided with screw, and this screw is corresponding with the lock ball hole of exterior central tube 3, and lock ball hold-down screw 8 is installed in this screw.Rubber cylinder pressing cap 11, inner central tube 4 and exterior central tube 3 corresponding positions are provided with installs the hole that sets shear pin 10.Upper piston 14 tops are connected with cylinder sleeve 12, and the bottom is connected with tail sleeve pipe 19.Described upper piston 14 bottoms are provided with interior step, and this interior step contacts with inner central tube 4 and sealed mutually by O RunddichtringO 2.The soffit of slotted collar 13 contacts with the upper surface of upper piston 14, and the place, inclined-plane of slotted collar 13 upper surfaces matches with the place, inclined-plane of cylinder sleeve 12, and the external surface of slotted collar 13 is provided with unidirectional tooth 20, is meshed with unidirectional tooth 20 on the exterior central tube 3.Tail sleeve pipe 19 bottoms are blind hole structure.
During operation, according to the well head pressure and the pre-degree of depth of throwing stifled oil pipe, regulate the quantity and the diameter that set shear pin 10, thereby realize throwing the oil pipe of stifled different depth.At first, connect lubricator in well head test strobe upper end, the suction type blanking plug is put in the lubricator, open test strobe and produce gate, blanking plug falls by deadweight, waits for reasonable time.When blanking plug during down to certain depth, blanking plug pressure chamber 16 is subjected to the effect of interior head of liquid of well and wellhead back pressure, lower piston 17 moves down under pressure, lower piston 17 drives inner central tube 4 and moves down, it is fixing to set shear pin 10 between inner central tube 4 and the exterior central tube 3, when the suffered power of inner central tube 4 when setting the shear stress of shear pin 10, produce relative motion between inner central tube 4 and the exterior central tube 3, set shear pin 10 and cut off.Lower piston 17 continues to move down under the head of liquid effect, make inner central tube 4 upper ends be close to exterior central tube 3 upper ends, and after inner central tube 4 runs down to the position, lock ball 7 is rolled into the groove position of inner central tube 3, lock ball 7 lost efficacy, thereby but make slips holder 6 freely-movables, meanwhile, head of liquid promotes lower piston 17 compression atmospheric air chambeies 18, and relative motions take place the unidirectional tooth 20 on slotted collar 13 and the exterior central tube 3.Head of liquid continues to promote lower piston 17 and moves down, and lower piston 17 drives inner central tube 4 and produces relative motion with tail sleeve pipe 19, and inner central tube 4 promotes the orbiting motion of slips 5 along lower slips holder 6, and slips 5 is opened, and blanking plug is anchored on the tube inner wall.After slips 5 grapplings, head of liquid in the pressure chamber 16 promotes the required power of lower piston 17 motions and is far longer than the required power of upper piston 14 compression packing elements 9 that promotes.Therefore, head of liquid promotes to move on the upper piston 14, compression packing element 9, lower piston 17 produces relative motion with tail sleeve pipe 19, continues compression atmospheric air chamber 18, slotted collar 13 then continuation is moved on the unidirectional tooth of exterior central tube 3, put in place until packing element 9 compressions, slotted collar 13 locking exterior central tubes 3 and tail sleeve pipe 19 make it that relative motion can not take place, packing element 9 is in compressive state always, thereby can seal oil pipe for a long time.
If slips 5 is stuck in oil pipe fouling position, and carry in the oil pipe process, incrustation scale comes off, then still have a little space between slips 5 and the tube inner wall, at this moment, because bottom pressure and wellhead back pressure exist always, pressure continues to act on pressure chamber 15, and by the pressure effect of pressure chamber 15, upper piston 14 drives in 19 continuation of tail sleeve pipe and moves, continue compression atmospheric air chamber 18, make slips 5 continue to uphold, until being clamped on the tube inner wall body, packing element 9 continues compression simultaneously, seal oil pipe once more, the phenomenon of avoiding blanking plug to fly out from oil pipe.
Claims (10)
1. one kind sets the formula tubing plug certainly, comprise upper slips holder (1), exterior central tube (3), inner central tube (4), slips (5), slips holder (6), lock ball (7), packing element (9), set shear pin (10), rubber cylinder pressing cap (11), cylinder sleeve (12), slotted collar (13), upper piston (14), inlet (16), lower piston (17), tail sleeve pipe (19), it is characterized in that the outer exterior central tube (3) that is equipped with of described inner central tube (4), upper slips holder (1) is installed outside the exterior central tube (3) in turn, slips (5), slips holder (6), packing element (9), rubber cylinder pressing cap (11), cylinder sleeve (12), upper piston (14), tail sleeve pipe (19) is connected on the upper piston (14), lower piston (17) is installed between inner central tube (4) and the tail sleeve pipe (19), form pressure chamber (15) on the lower piston (17), form atmospheric air chamber (18) under the lower piston (17).
2. according to claim 1 oneself sets the formula tubing plug, it is characterized in that the upper end of described exterior central tube (3) is provided with outer lug boss, and this outer lug boss is provided with external screw thread, is connected with the internal thread of upper slips holder (1).
3. according to claim 1 from setting the formula tubing plug, it is characterized in that described inner central tube (4) one ends are provided with outer lug boss.
4. according to claim 1 and 2 from setting the formula tubing plug, it is characterized in that described exterior central tube (3) middle and lower part is provided with the lock ball hole, is equipped with lock ball (7) in the lock ball hole.
5. according to claim 1 oneself sets the formula tubing plug, it is characterized in that the bottom of described slips holder (6) is provided with screw, and this screw is corresponding with the lock ball hole of exterior central tube (3), and lock ball hold-down screw (8) is installed in this screw.
6. according to claim 1 or 2 or 3 described from setting the formula tubing plug, it is characterized in that described rubber cylinder pressing cap (11), inner central tube (4) and the corresponding position of exterior central tube (3) are provided with the hole that installation sets shear pin (10).
7. according to claim 1 oneself sets the formula tubing plug, it is characterized in that described upper piston (14) top is connected with cylinder sleeve (12), and the bottom is connected with tail sleeve pipe (19).
8. according to claim 7 oneself sets the formula tubing plug, it is characterized in that described upper piston (14) bottom is provided with interior step, and this interior step contacts with inner central tube (4) and sealed mutually by O RunddichtringO (2).
9. according to claim 1 from setting the formula tubing plug, the soffit that it is characterized in that described slotted collar (13) contacts with the upper surface of upper piston (14), the place, inclined-plane of slotted collar (13) upper surface matches with the place, inclined-plane of cylinder sleeve (12), the external surface of slotted collar (13) is provided with unidirectional tooth (20), is meshed with unidirectional tooth (20) on the exterior central tube (3).
10. described from setting the formula tubing plug according to claim 1, it is characterized in that described tail sleeve pipe (19) bottom is a blind hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200558306U CN201934055U (en) | 2011-03-07 | 2011-03-07 | Self-setting type tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200558306U CN201934055U (en) | 2011-03-07 | 2011-03-07 | Self-setting type tubing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934055U true CN201934055U (en) | 2011-08-17 |
Family
ID=44445577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200558306U Expired - Fee Related CN201934055U (en) | 2011-03-07 | 2011-03-07 | Self-setting type tubing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934055U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493777A (en) * | 2011-12-14 | 2012-06-13 | 中国石油天然气股份有限公司 | Hydraulic release blanking plug |
| CN102561991A (en) * | 2012-01-18 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter hydrostatic setting plug |
| CN102654043A (en) * | 2011-03-04 | 2012-09-05 | 中国石油化工股份有限公司 | Automatic set-down type tubing plug |
| CN104499985A (en) * | 2014-10-19 | 2015-04-08 | 盐城市金巨石油机械制造有限公司 | Multifunctional high-pressure oil pipe plug and use method thereof |
| CN113027377A (en) * | 2021-05-27 | 2021-06-25 | 东营市正能石油科技有限公司 | Packer for oil production |
-
2011
- 2011-03-07 CN CN2011200558306U patent/CN201934055U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654043A (en) * | 2011-03-04 | 2012-09-05 | 中国石油化工股份有限公司 | Automatic set-down type tubing plug |
| CN102654043B (en) * | 2011-03-04 | 2014-05-28 | 中国石油化工股份有限公司 | Automatic set-down type tubing plug |
| CN102493777A (en) * | 2011-12-14 | 2012-06-13 | 中国石油天然气股份有限公司 | Hydraulic release blanking plug |
| CN102493777B (en) * | 2011-12-14 | 2014-01-01 | 中国石油天然气股份有限公司 | Hydraulic release blanking plug |
| CN102561991A (en) * | 2012-01-18 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter hydrostatic setting plug |
| CN102561991B (en) * | 2012-01-18 | 2014-08-06 | 中国石油天然气股份有限公司 | Small-diameter hydrostatic setting plug |
| CN104499985A (en) * | 2014-10-19 | 2015-04-08 | 盐城市金巨石油机械制造有限公司 | Multifunctional high-pressure oil pipe plug and use method thereof |
| CN113027377A (en) * | 2021-05-27 | 2021-06-25 | 东营市正能石油科技有限公司 | Packer for oil production |
| CN113027377B (en) * | 2021-05-27 | 2022-03-11 | 东营市正能石油科技有限公司 | Packer for oil production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201934055U (en) | Self-setting type tubing plug | |
| AU2019203013A1 (en) | Devices and related methods for actuating wellbore tools with a pressurized gas | |
| CN110836104B (en) | Bidirectional slip hydraulic permanent packer | |
| CN102747982B (en) | Hydraulic mechanical integrated bridge plug | |
| CA2803714C (en) | Fracturing system | |
| CN107605428B (en) | Pressure-relief well sealing bridge plug | |
| CN108386157A (en) | Piston pressure opening type sliding sleeve switch and hydraulic fracturing construction method | |
| CN109339757B (en) | Time-delay sliding sleeve | |
| CN204436320U (en) | A kind of hydraulic releasing big orifice packer | |
| CN203905883U (en) | Metal sealing device used for underwater well head | |
| CN101787865A (en) | Midway setting-proof permanent packer | |
| CN206299366U (en) | A kind of anti-premature setting open hole packer | |
| CN210087290U (en) | Packer for closed pipe column | |
| CN110541687A (en) | Toe end sliding sleeve capable of controlled delay opening | |
| CN102493777B (en) | Hydraulic release blanking plug | |
| CN102654043B (en) | Automatic set-down type tubing plug | |
| RU123064U1 (en) | Borehole device for the implementation of rock fracturing | |
| RU198232U1 (en) | Packer suspension for attaching a shank with a drill pipe disconnect device | |
| CN106703740B (en) | Bi-directional compression packer inside and outside hydraulically-controlled type | |
| CN111520101B (en) | Oil pipe plugging device | |
| CN202706985U (en) | Hydraulic machinery integrated bridge plug | |
| CN107035336B (en) | Self-control blanking plug | |
| CN205477528U (en) | Novel well head coupling blocks up valve | |
| CN105464617B (en) | Expanding open hole packer | |
| CN109209311A (en) | Constant-pressure water distribution device |
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: 20110817 Termination date: 20150307 |
|
| EXPY | Termination of patent right or utility model |