CN203559863U - Hydraulic oil pipe bridge plug - Google Patents
Hydraulic oil pipe bridge plug Download PDFInfo
- Publication number
- CN203559863U CN203559863U CN201320672597.5U CN201320672597U CN203559863U CN 203559863 U CN203559863 U CN 203559863U CN 201320672597 U CN201320672597 U CN 201320672597U CN 203559863 U CN203559863 U CN 203559863U
- Authority
- CN
- China
- Prior art keywords
- pole
- center
- oil pipe
- lock
- hydraulic oil
- 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 - Lifetime
Links
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 12
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 18
- 238000012856 packing Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a hydraulic oil pipe bridge plug. The hydraulic oil pipe bridge plug consists of a center rod, a hydrostatic device, a positioning locking device, a sealing rubber sleeve and a guide head, which are all mounted on the center rod, wherein the hydrostatic device is arranged on the center rod above the positioning locking device, and consists of an impact head, a locking block support, a locking block, a lock sleeve and a piston. Blowout control snubbing operation can be realized by connecting the hydraulic oil pipe bridge plug into an oilfield production pipe column and running the oilfield production pipe column in place; due to the design and selection of wear-resistant rubber and the addition of an elastic metal material at the end parts for protection, large radial extension of the rubber sleeve is ensured, and an oil pipe can be internally plugged under the conditions of small wellhead size and large oil pipe size; the hydrostatic device can be used for realizing low-pressure packing (5MPa) without external pressurization; by a self-locking device, the rubber sleeve cannot be axially rebounded, but can be axially compressed, and multiple protection shoulder parts are specially arranged to ensure the sealing reliability of the bridge plug; the bridge plug is convenient to construct and wide in application range.
Description
technical field:
The utility model discloses a kind of hydraulic oil pipe bridging plug, belong to oil extraction in oil field engineering workover tool technical field, particularly the instrument on sealing stratum for a kind of oil-water well.
background technology:
During oil well repairing operation, for balance down-hole pressure, prevent gas blowout accident, need to adopt well killing fluid kill-job, because well killing fluid is chemical agent, easily polluted reservoir, affects reservoir recovery.In order to reduce the pollution to oil reservoir, conventionally when maintenance high-pressure oil gas well, adopt Operating Pressure, not kill-job, not open flow, keep playing lower tubular column in former borehole pressure situation, before lower oil tube, must first use tubing plug to stop up oil pipe, prevent that the highly pressurised liquids such as crude oil, water from entering in oil pipe excessive from well head.Because down-hole is in high pressure conditions, instrument needs kill-job or against pressure before going into the well, easy like this causing formation contaminant and prolongation duration.Existing tubing plug, center-pole and the positioning and locking device, cartridge and the guide head that are arranged on center-pole, consist of, by the spring control lock pawl compression seal packing element of positioning and locking device, its bearing capacity is low, generally can only bear 24MPa, cause in work progress success rate not high; Meanwhile, before and after packing element compressive strain, diameter gap can not exceed 12mm, cannot seal the oil well of The Small Well mouth Big Inch.
" a kind of oil gas field tubing plug " that Chinese patent ZL201020565204.7 introduces is exactly a kind of tubing plug wherein using, by salvaging balancing pole, lock dog holder, blanking plug joint, lock dog, balance pipe, sealing cup, the holder of skin wrist, blanking plug sealed body, plug, formed, this blanking plug can meet the oil well operation that upper and lower pressure reduction is larger, because of the expansion of sealing cup limited, for the oil well of The Small Well mouth Big Inch size situation, this blanking plug does not reach requirement.
summary of the invention:
The purpose of this utility model is affected by hydraulics to stop up the defect of effect in order to overcome tubing plug, and a kind of wide, easy construction and good hydraulic oil pipe bridging plug of plugging performance of adapting to is provided.
The utility model is comprised of center-pole and the hydrostatic device, positioning and locking device, cartridge and the guide head that are arranged on center-pole, hydrostatic device is arranged on the center-pole on positioning and locking device, hydrostatic device is comprised of impact head, lock dog holder, lock dog, lock tube, piston, impact head is "T"-shaped structure, bottom is hollow tubular structures, hollow tubular body top is undergauge section, in its undergauge section, has radially fluid hole, and impact head is fixed on by shear pin in the cavity of lock dog holder; Lock dog holder is hollow section, on the tube wall corresponding with impact head of its top, has radially lockhole, and lock dog is installed in lockhole, and bottom is connected with center-pole by screw thread, and lock dog holder is set with lock tube outward, and lock tube bottom is connected with piston by screw thread; Piston is hollow tubular structures, its top has inlet opening, in its inlet opening bottom, be provided with interior shoulder, in it, between shoulder and center-pole, by sealing ring, seal, between the outer shoulder in piston bottom and center-pole middle part, by sealing ring, seal, can between piston and center-pole, form a hydrostatic chamber.
Beneficial functional of the present utility model is: in oil well production string, connect the utility model and go into the well to put in place and can realize not kill-job preventing spraying operation; design and select abrasive rubber to add the protection of end elastic metallic material and make packing element amount of radial expansion large, can realize for well head size little and under connect in the oil pipe in the situation that tubing size is large and stop up.Hydrostatic device is realized and is not needed external pressurized can realize low pressure (5MPa) to set, and self-locking device axially can only compress packing element can not to rebound and have special shoulder multiple protective to make blanking plug sealing more reliable, easy construction, adapt to wide.
accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is packing element structural representation of the present utility model.
the specific embodiment:
Below in conjunction with accompanying drawing, the present invention is done to concrete description:
From accompanying drawing 1, the utility model is comprised of center-pole 8 and the hydrostatic device, positioning and locking device, cartridge 16 and the guide head 17 that are arranged on center-pole 8, hydrostatic device is arranged on the center-pole 8 on positioning and locking device, hydrostatic device is comprised of impact head 1, lock dog holder 2, lock dog 3, lock tube 5, piston 7, impact head 1 is "T"-shaped structure, bottom is hollow tubular structures, hollow tubular body top is undergauge section, in its undergauge section, have radially fluid hole, impact head 1 is fixed on by shear pin 4a in the cavity of lock dog holder 2; Lock dog holder 2 is hollow sections, on the tube wall corresponding with impact head 1 of its top, has radially lockhole, and lock dog 3 is installed in lockhole, and bottom is connected with center-pole 8 by screw thread, and lock dog holder 2 is outer is set with lock tube 5, and lock tube 5 bottoms are connected with piston 7 by screw thread; Piston 7 is hollow tubular structures, its top has inlet opening 7a, in its inlet opening 7a bottom, be provided with interior shoulder, in it, between shoulder and center-pole 8, by sealing ring 6a, seal, outside piston 7 bottoms and center-pole 8 middle parts, between shoulder, by sealing ring 6b, seal, can between piston 7 and center-pole 8, form a hydrostatic chamber.
Described positioning and locking device is arranged on shoulder bottom outside center-pole 8 middle parts, being fixed on center-pole 8 by shear pin 4b of positioning and locking device, in lock ring cover 9, lock ring 11 is housed, and fixing by steady nail 10, lock ring cover 9 upper cone 12 that is threaded, on center-pole 8 under upper cone 12, be set with successively upper slips 13a, slips support 14, lower slips 13b, lower cone 15, the tooth opposite direction of upper slips 13a, lower slips 13b, can bear upper and lower pressure in tubing string, guarantee the location of hydraulic oil pipe bridging plug, make blanking plug sealing more reliable, pressure-bearing is high.
In described cartridge 17, lower two ends are provided with on packing element helmet 16b under helmet 16a and packing element, on packing element, the shape of helmet 16a and helmet 16b under packing element is identical with cartridge 17 two ends shapes, copper plate by 3-4 thickness 1-1.5mm is formed by stacking mutually, when this structure can guarantee packing element radial dilatation, packing element helmet opens one by one with compressive force, the end at protection cartridge 17 two ends, avoid cartridge 17 because breaking the large end of pressure-bearing, thereby guarantee that packing element amount of radial expansion is large, realize small diameter tools with regard to salable major diameter oil pipe (or distortion oil pipe), reach the reliable object of plug for seal.
Instrument use principle: during use, the utility model is dropped into and treated position to be sealed in oil pipe, from well head, throw a heavyweight trip rod and clash into impact head 1, shear pin 4a is cut off, impact head 1 is descending, lock dog 3 just falls into the undergauge section on impact head 1 top, lock tube 5 loses the restriction of lock dog 3, hydrostatic device is unlocked, piston 7 in hydrostatic device is started working under the head of liquid of this degree of depth, oil liquid in pipe enters piston 7 by inlet opening 7a, head of liquid acts on the interior shoulder of piston 7 inlet opening 7a bottoms, lock tube 5 and piston 7 move downward, first promote lock ring cover 9 and lock ring 11 descending along the snap close on center-pole 8, promote upper cone 12 close to lower cone 15, cut off shear pin 4c, upper slips 13a, lower slips 13b is respectively along upper cone 12, lower cone 15 expands outwardly engaging on tube inner wall, hydrostatic device, positioning and locking device continue to move downward, cartridge 17 axial compression radial dilatation sealing oil pipes, the distortion of upper lower rubber cylinder helmet is attached to and on tube inner wall, protects cartridge 17, and positioning and locking device axially can only compress cartridge 17 can not to rebound to reach the object of permanent seal simultaneously.
Claims (4)
1. a hydraulic oil pipe bridging plug, by center-pole (8) and be arranged on the hydrostatic device on center-pole (8), positioning and locking device, cartridge (16) and guide head (17) composition, it is characterized in that: hydrostatic device is arranged on the center-pole (8) on positioning and locking device, hydrostatic device is by impact head (1), lock dog holder (2), lock dog (3), lock tube (5), piston (7) composition, impact head (1) is "T"-shaped structure, bottom is hollow tubular structures, hollow tubular body top is undergauge section, in its undergauge section, have radially fluid hole, impact head (1) is fixed in the cavity of lock dog holder (2) by shear pin (4a), lock dog holder (2) is hollow section, on the tube wall corresponding with impact head (1) of its top, have radially lockhole, lock dog (3) is installed in lockhole, bottom is connected with center-pole (8) by screw thread, lock dog holder (2) is outer is set with lock tube (5), and lock tube (5) bottom is connected with piston (7) by screw thread, piston (7) is hollow tubular structures, and its top has inlet opening (7a), in its inlet opening (7a) bottom, is provided with interior shoulder.
2. hydraulic oil pipe bridging plug according to claim 1, is characterized in that: between the interior shoulder of piston (7) and center-pole (8), by sealing ring (6a) sealing, between the outer shoulder in piston (7) bottom and center-pole (8) middle part, by sealing ring (6b), seal.
3. hydraulic oil pipe bridging plug according to claim 1 and 2, it is characterized in that: positioning and locking device is arranged on outer shoulder bottom, center-pole (8) middle part, being fixed on center-pole (8) by shear pin (4b) of positioning and locking device, lock ring (11) is housed in lock ring cover (9), and fixing by steady nail (10), lock ring cover (9) upper cone (12) that is threaded, on center-pole (8) under upper cone (12), be set with successively upper slips (13a), slips support (14), lower slips (13b), lower cone (15), upper slips (13a), the tooth opposite direction of lower slips (13b).
4. hydraulic oil pipe bridging plug according to claim 1 and 2, it is characterized in that: described cartridge (17) upper/lower terminal is provided with helmet (16b) under helmet on packing element (16a) and packing element, the shape of helmet on packing element (16a) and helmet under packing element (16b) is identical with cartridge (17) two ends shape, by the copper plate of 3-4 thickness 1-1.5mm, is mutually formed by stacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320672597.5U CN203559863U (en) | 2013-10-29 | 2013-10-29 | Hydraulic oil pipe bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320672597.5U CN203559863U (en) | 2013-10-29 | 2013-10-29 | Hydraulic oil pipe bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559863U true CN203559863U (en) | 2014-04-23 |
Family
ID=50509591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320672597.5U Expired - Lifetime CN203559863U (en) | 2013-10-29 | 2013-10-29 | Hydraulic oil pipe bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559863U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074491A (en) * | 2014-07-09 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
| CN111764865A (en) * | 2020-08-07 | 2020-10-13 | 深圳百途石油技术服务有限公司 | Soluble end cap of pump sending |
-
2013
- 2013-10-29 CN CN201320672597.5U patent/CN203559863U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074491A (en) * | 2014-07-09 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
| CN111720086A (en) * | 2020-07-08 | 2020-09-29 | 中国石油天然气集团有限公司 | Impact type pipe end plugging device and using method |
| CN111720086B (en) * | 2020-07-08 | 2024-01-19 | 中国石油天然气集团有限公司 | Impact type pipe end blanking plug and use method thereof |
| CN111764865A (en) * | 2020-08-07 | 2020-10-13 | 深圳百途石油技术服务有限公司 | Soluble end cap of pump sending |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
|
| CX01 | Expiry of patent term |