CN2457332Y - Improved drillable bridge plug - Google Patents
Improved drillable bridge plug Download PDFInfo
- Publication number
- CN2457332Y CN2457332Y CN 00251819 CN00251819U CN2457332Y CN 2457332 Y CN2457332 Y CN 2457332Y CN 00251819 CN00251819 CN 00251819 CN 00251819 U CN00251819 U CN 00251819U CN 2457332 Y CN2457332 Y CN 2457332Y
- Authority
- CN
- China
- Prior art keywords
- axle
- bar
- seat seal
- breaking
- breaking rod
- 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
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Abstract
The utility model discloses an improved drillable bridge plug which is composed of a stretch breaking rod, a mandril and a seat seal device, wherein, the upper and the lower ends of the stretch breaking rod are provided with external threads; the outside lower end of the hollow barrel-shaped mandrel is provided with a step on which the seat seal device is sheathed; the lower part of the mandrel is provided with internal threads and the bottom is connected with a sealing head. The lower part of the stretch breaking rod is connected with the lower part of the mandrel via threads. An uprighting block is arranged between the stretch breaking rod and the mandrel and is connected with the stretch breaking rod via the threads. The utility model has the advantages of safety descent, reliable seat seal, easy drilling and plugging operation, etc.
Description
The utility model relates to a kind of oil tool, particularly a kind of bored bridging plug that is used for packing oil well bottom.
The oil field uses Y453-108 can bore bridging plug in the measure technology of bottom water plugging at present, and this instrument exists following shortcoming: 1, in the process of going into the well, because factor affecting such as hole deviation, break ring and deflection easily takes place sprain disconnectedly, make and to bore bridging plug and fall into the shaft bottom, cause invalid construction; 2, axle insufficient strength, axle stress point place easy fracture makes bridging plug can't realize the seat envelope; 3, axle upper end be a solid construction, and does not have the characteristics of drilling speed according to the drilling tool center of present use, when brill falls bridging plug, spend a large amount of time.
The purpose of this utility model is exactly the shortcoming that overcomes prior art, provides a kind of modified can bore bridging plug.
The purpose of this utility model is achieved in that modified can bore bridging plug by breaking bar, axle, the seat seal apparatus is formed, the seat seal apparatus comprises seat envelope pressure ring, slips, cone, anti-protruding pad, the packing element pressure ring, packing element and hollow shear pin, break on the bar, there is external screw thread at following two ends, one place's undergauge is arranged on the top of lower thread, axle is hollow tubbiness, there is a step outside lower end, the seat seal apparatus is enclosed within on the outer steps of axle, the bottom of axle is provided with internal thread, its bottom is connected to seal head, the bottom of breaking bar is connected with the lower thread of axle, is provided with wiper block breaking between bar and the axle, wiper block with break bar and be threaded.
The utility model site of deployment shows, its safety of going into the well, and no break-off accident takes place, and seat envelope process does not occur breaking the axle accident, thereby guarantees that bridging plug effectively seals, and has eliminated invalid operation, has reduced workover cost, thereby has improved economic benefit.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1: can bore the bridging plug structural representation;
Fig. 2: running string structural representation;
Among the figure: 1-break bar, 2-centralizer body, 3-lock ring, 4-seat envelope pressure ring, 5-slips,
The anti-protruding pad of 6-cone, 7-shear pin, 8-packing element pressure ring, 9-, 10-packing element,
11-axle, 12-seal head, 13-sleeve pipe, 14-oil pipe, 15-dropping feeder,
16-can bore bridging plug, 17-artificial bottom of a well, 18-producing zone, 19-plugged zone;
As shown in Figure 1, can to bore bridging plug mainly be to breaking bar 1 and axle 11 has been done bigger variation, to adapt to the requirement of down-hole to modified.Modified can bore bridging plug mainly by break bar 1, axle 11, a seat seal apparatus is formed, the seat seal apparatus is the same with existing seat seal apparatus, comprises that mainly seat seals a pressure ring 4, slips 5, cone 6, prevents protruding pad 9, packing element pressure ring 8, packing element 10 and hollow shear pin 7.Break bar 1 upper/lower terminal external screw thread is arranged, one place's undergauge is arranged on the top of lower thread, axle 11 is hollow tubbiness, there is a step outside lower end, and the seat seal apparatus is enclosed within on the outer steps of axle 11, and the bottom of axle 11 is provided with internal thread, its bottom is connected to seal head 12, the upper end of axle 11 is hollow like this, and the lower end helps boring plug for what seal.The bottom of breaking bar 1 is connected with the lower thread of axle 11, is provided with wiper block 2 breaking between bar 1 and the axle 11, and wiper block 2 is threaded with breaking bar 1, avoids that the factor owing to hole deviation ruptures when going into the well.
Water is example at the bottom of the bridge plugging boring below, the course of work of the present utility model is done one to be described, tubular column structure figure as shown in Figure 2, main by boring bridging plug and supporting dropping feeder, oil pipe is formed, during construction by the order of connection among the figure connected tubing string go into the well put in place after, suppress from the oil pipe pitching, dropping feeder is descending, be pressed on the seat envelope pressure ring that can bore bridging plug, bridging plug is broken bar and seat envelope pressure ring generation relative motion, makes upper slips sit card earlier, cut off respectively again, following hollow shear pin, after the packing element sealing, lower slips is sat card, and the bridging plug lock ring is in breaking the up process of bar, dependence is threaded with axle, constantly descending along axle, thereby last, lower slips is locked, when the seat seal pressure is elevated to certain value continuously, breaking bar breaks from undergauge, bridging plug is released to the planned well deep-seated and puts, and trips out dropping feeder and finishes an envelope process, realizes the purpose of shutoff lower floor.
When need bore bridging plug, be lowered to flat junk mill and add the pressure of the drill, bore the envelope pressure ring of losing places, lock ring, axle, slips, cone, packing element pressure ring, anti-protruding pad, packing element, making its drilling cuttings fall into well falls, because its hollow mandrel design, the brill plug that makes is easy, whole brill plug deficiency of time 1 hour.
Claims (1)
1, a kind of modified can bore bridging plug by breaking bar (1), axle (11), the seat seal apparatus is formed, the seat seal apparatus comprises seat envelope pressure ring (4), slips (5), cone (6), anti-protruding pad (9), packing element pressure ring (8), packing element (10), hollow shear pin (7), it is characterized in that: break on the bar (1), there is external screw thread at following two ends, one place's undergauge is arranged on the top of lower thread, axle (11) is hollow tubbiness, there is a step outside lower end, the seat seal apparatus is enclosed within on the outer steps of axle (11), the bottom of axle (11) is provided with internal thread, its bottom is connected to seal head (12), the bottom of breaking bar (1) is connected with the lower thread of axle (11), be provided with wiper block (2) breaking between bar (1) and the axle (11), wiper block (2) with break bar (1) and be threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00251819 CN2457332Y (en) | 2000-09-13 | 2000-09-13 | Improved drillable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00251819 CN2457332Y (en) | 2000-09-13 | 2000-09-13 | Improved drillable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457332Y true CN2457332Y (en) | 2001-10-31 |
Family
ID=33609622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00251819 Expired - Fee Related CN2457332Y (en) | 2000-09-13 | 2000-09-13 | Improved drillable bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457332Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465683A (en) * | 2010-11-15 | 2012-05-23 | 德阳市亨东石油机械设备有限公司 | Multi-stage packing bridge plug |
| CN103046896A (en) * | 2013-01-17 | 2013-04-17 | 四机赛瓦石油钻采设备有限公司 | Fracturing bridge plug |
| CN103717828A (en) * | 2011-08-22 | 2014-04-09 | 国家博斯奥格能源服务有限责任公司 | Downhole tool and method of use |
| CN105201451A (en) * | 2014-06-25 | 2015-12-30 | 中国石油化工股份有限公司 | Ball-throwing type fast-drilling bridge plug |
| CN107304658A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of penetration type plugging device |
-
2000
- 2000-09-13 CN CN 00251819 patent/CN2457332Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465683A (en) * | 2010-11-15 | 2012-05-23 | 德阳市亨东石油机械设备有限公司 | Multi-stage packing bridge plug |
| CN103717828A (en) * | 2011-08-22 | 2014-04-09 | 国家博斯奥格能源服务有限责任公司 | Downhole tool and method of use |
| CN103717828B (en) * | 2011-08-22 | 2016-08-17 | 井下技术有限责任公司 | Downhole tool and using method |
| CN105927173A (en) * | 2011-08-22 | 2016-09-07 | 井下技术有限责任公司 | Method Of Using Downhole Tool |
| CN105927173B (en) * | 2011-08-22 | 2018-04-24 | 井下技术有限责任公司 | Use the method for downhole tool |
| CN103046896A (en) * | 2013-01-17 | 2013-04-17 | 四机赛瓦石油钻采设备有限公司 | Fracturing bridge plug |
| CN103046896B (en) * | 2013-01-17 | 2015-08-26 | 四机赛瓦石油钻采设备有限公司 | A kind of press-fracturing bridge plug |
| CN105201451A (en) * | 2014-06-25 | 2015-12-30 | 中国石油化工股份有限公司 | Ball-throwing type fast-drilling bridge plug |
| CN107304658A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of penetration type plugging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |