CN204663479U - A kind of nonmetal easy brill bridging plug - Google Patents
A kind of nonmetal easy brill bridging plug Download PDFInfo
- Publication number
- CN204663479U CN204663479U CN201520354781.4U CN201520354781U CN204663479U CN 204663479 U CN204663479 U CN 204663479U CN 201520354781 U CN201520354781 U CN 201520354781U CN 204663479 U CN204663479 U CN 204663479U
- Authority
- CN
- China
- Prior art keywords
- slips
- packing element
- central tube
- annular groove
- bridging plug
- 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
Abstract
The utility model is specifically related to a kind of nonmetallic drillable bridge plug realizing sealing and screens in oil, natural gas completion practice process.A kind of nonmetal easy brill bridging plug, comprise a central tube, central tube external diameter upper end is provided with annular boss, and lower end is provided with annular groove, is socketed with successively from top to bottom therebetween and sets pressure ring, the combination of upper slips italic, packing element combination, expanding ring, lower sphenoid and lower slips; Install slips support in described annular groove, the size of slips support is mated with annular groove size; Annular groove lower central pipe external diameter is also provided with slips bracket, and slips bracket connects slips support by stop pin.The utility model annular boss and annular groove, coordinate slips support and slips bracket that the axial force outside central tube is transferred to central tube, realizes setting strength without retaining mechanism and transfer on central tube; Connect slips support and slips bracket by stop pin, thus form relatively-stationary entirety with central tube, prevent the phenomenon that dallies.
Description
Technical field
The utility model relates to oil gas field oil-water well operation downhole tool field, is specifically related to a kind of nonmetallic drillable bridge plug realizing sealing and screens in oil, natural gas completion practice process.
Background technology
The bored bridging plug that current oilfield operation uses mainly is made up of ductile iron metal material, milling is more difficult, milling tubing string cannot be realized complete and multiplely bore bridging plug milling process, a bite well is required to realize very difficult with multiple bridging plug technological measure simultaneously, almost cannot realize for underground work such as multilayer multistage pressure break novel techniques, a lot of petroleum industry unit has carried out the research of the bored bridging plug of nonmetals at present.Application number is " 201320121938.X ", name is called the nonmetallic drillable bridge plug disclosed in Chinese utility model patent of " nonmetallic drillable bridge plug ", although material (slips still uses metal) is selected nonmetal, but structure and common to bore cast iron bridging plug similar, use ring locking mechanism equally, complete setting after, rely on lock rings, prevent packing element and slips reset deblocking.There is following defect in this nonmetallic drillable bridge plug: one is that non-Strength of Metallic Materials is relatively low, and when bridging plug bears higher upper pressure reduction, mandrel moves down under the effect of the pressure, and the stressed easy slide fastener of retaining mechanism special type screw thread unlocks and causes bridging plug inefficacy; Two is that this structure nonmetallic drillable bridge plug does not arrange rotation-preventing mechanism, easily forms idle running when boring mill, causes milling difficulty; Three are slips of this nonmetallic drillable bridge plug is all-in-one-piece, and in setting process, likely distinguish is uneven, impact sealing and pressure-bearing effect; Four is these nonmetallic drillable bridge plug non-stop layer passages, does not dispose and just cannot go into operation after completing construction, if the interval of shutoff during milling simultaneously forms trap high pressure, then milling has a big risk, and easily causes security incident.
Summary of the invention
The utility model is intended to propose a kind of rotation-preventing mechanism that is provided with and realizes the safe nonmetal easy brill bridging plug of one of locking.
Technical program of the present invention lies in:
A kind of nonmetal easy brill bridging plug, comprise a central tube, central tube external diameter upper end is provided with annular boss, lower end is provided with annular groove, is socketed with successively from top to bottom and sets pressure ring, the combination of upper slips italic, packing element combination, expanding ring, lower sphenoid and lower slips between annular boss and annular groove; Install slips support in described annular groove, the size of slips support is mated with annular groove size; Annular groove lower central pipe external diameter is also provided with slips bracket, and slips bracket connects slips support by stop pin.
Described upper slips italic combination comprises the upper slips and upper sphenoid that connect successively from top to bottom; Upper slips bottom is taper; Upper sphenoid top is taper, and upper sphenoid conical tapers is identical with the tapering of upper slips lower taper.
Described packing element combination comprises a middle packing element and is arranged in two end packing elements at the upper and lower two ends of packing element, end packing element contacts the two ends connected with middle packing element be taper, the end deviating from packing element is all provided with helmet in the outer helmet of packing element and packing element, middle packing element two ends are taper, identical with end packing element conical tapers.
In central tube, latus rectum top is arranged with ball.
Described upper end, central tube annular boss position is provided with pin of blocking.
Described setting pressure ring is fixed on central tube by shear pin.
Technique effect of the present invention is:
The utility model devises on the one hand annular boss on central tube external diameter and annular groove, coordinates slips support and slips bracket to transfer on central tube by the axial force outside central tube, realizes setting strength without retaining mechanism design simultaneously and transfer on central tube; On the other hand, connect slips support and slips bracket by stop pin, thus form relatively-stationary entirety with central tube, prevent from, during milling, idle running phenomenon occurs.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of nonmetal easy brill bridging plug of the utility model.
Wherein, 1-central tube; 2-blocks pin; 3-ball; 4-sets pressure ring; 5-shear pin; The 6-slips collar; 7-upper slips; 8-slips is surely sold; The upper sphenoid of 9-; The outer helmet of 10-packing element; Helmet in 11-packing element; 12-holds packing element; Packing element in 13-; The expanding ring of 14-; Sphenoid under 15-; 16-lower slips; 17-slips support; 18-stop pin; 19-slips bracket.
Detailed description of the invention
A kind of nonmetal easy brill bridging plug of the utility model, comprise a central tube 1, in central tube 1, latus rectum top is arranged with ball 3; Central tube 1 external diameter upper end is provided with a hole and pin of blocking is housed; Its position is higher than ball 3.Central tube 1 is blocked below pin and is provided with annular boss and annular groove, is socketed with successively and sets pressure ring 4, the combination of upper slips italic, packing element combination, expanding ring 14, lower sphenoid 15 and lower slips 16 between annular boss and annular groove;
Install slips support 17 in described annular groove, the size of slips support 17 is mated with annular groove size; Annular groove lower central pipe 1 external diameter is also provided with slips bracket 19, slips bracket 19 connects slips support 17 by stop pin 18-1, and be fixed on central tube 1 by stop pin 18-2, make slips support 17, slips bracket 19 and central tube 1 form relatively-stationary entirety.
Wherein, upper slips 7 is surely sold 8-1 by slips collar 6-1 and slips and is fixed on central tube outer wall.Lower slips 16 is surely sold 8-2 by slips collar 6-2 and slips and is fixed on central tube outer wall.
Set pressure ring 4 lower end and be provided with annular space, its upper end contacts with annular boss, and is connected with central tube 1 by shear pin 5-1; Upper slips italic comprises the upper slips 7 and upper sphenoid 9 that connect successively, and upper sphenoid 9 is fixed on central tube 1 by shear pin 5-2; Upper slips 7 is lobe shape structure, and upper end embedding sets annular space in pressure ring 4 lower end and positions; Upper slips 7 bottom is taper, and outer wall is inlaid with hard alloy blocks; Upper sphenoid 9 is taper, and upper sphenoid 9 conical tapers is identical with the tapering of upper slips 7 lower taper, its outside uniform slips skewed slot.Packing element combination comprises a middle packing element 13 and is arranged in the end packing element 12 at packing element about 13 two ends, it is taper that end packing element 12 contacts with middle packing element 13 two ends connected, the end deviating from packing element 13 is all provided with helmet 11 in the outer helmet 10 of packing element and packing element, middle packing element 13 two ends are taper, identical with end packing element 12 conical tapers.Expanding ring 14 is ring bodies, interior uniform oblique groove.Lower sphenoid 15 is fixed on central tube 1 by shear pin 5-3, and lower sphenoid about 15 two ends are pyramidal structure, and its surperficial uniform inclined platform, matches with the oblique groove in expanding ring 14; Lower slips 16 top is taper, identical with lower sphenoid 15 lower taper tapering, its outside uniform slips skewed slot.
The course of work of the present utility model is:
The utility model in use, destination is transferred to by delivering setting instrument, delivery instrument works under external force, formation is pulled out central tube 1, under push away a pair active force setting pressure ring 4, set that pressure ring 4 relative centre pipe 1 is descending cuts off shear pin 5-1, setting pressure ring 4 relative centre pipe 1, to continue descending downward slips support 17 close, cut off the shear pin 5-2 on the sphenoid 9 and shear pin 5-3 on lower sphenoid 15 successively, draw close in process to slips support 17 the slips collar 6-2 overlapped thereon at lower sphenoid 15 to rupture, lower slips 16 is made to be attached to internal surface of sleeve pipe along the inclined-plane radial dilatation of lower sphenoid 15, it is locking that slip insert embedding internal surface of sleeve pipe in its lower slips 16 external arc completes lower end, expanding ring 14 descending radial direction cracking is divided into 4 equal portions and along the radial expanding internal surface of sleeve pipe that is attached in inclined-plane of lower sphenoid 15 to outer helmet 10 rigid protective of packing element, upper slips 7 under the promotion setting pressure ring 4 along on the inclined-plane of sphenoid 9 move down radial dilatation and cover slips collar 6-1 thereon ruptured and continues to move down radial dilatation to be engaging in internal surface of sleeve pipe to complete bridging plug upper end locking, packing element 12 and middle packing element 13 axial compression radial dilatation center seal pipe 1 external diameter and casing inner diameter is held to form annular space in the process, the radial dilatation of end packing element 12 forces helmet 11 and outer helmet 10 radial direction of packing element in packing element strut and protect end packing element 12, the while of end packing element 12, centering packing element 13 has played a protective role and has set overall process.
Ball 3 center seal pipe 1 internal channel when this nonmetal easy brill bridging plug is pressed high; interval construction upper strata, protection bottom; after after completing construction, operation pressure disappears; lower floor's liquid backs down ball 3 and is communicated with up, can not form trapped pressure, can directly go into operation if down-hole pressure is high; if when needing the nonmetal easy brill bridging plug disposing pit shaft; owing to all adopting nonmetal easy brill material, complete fast bore mill process, can one-trip string complete a greater number bridging plug brill mill process.
In the utility model embodiment, the split-type slips structure that upper slips 7 and lower slips 16 are formed distinguish when setting is even, and make central tube 1 better placed in the middle, packing element is evenly combination stressed, improves sealing effectiveness and bearing capacity; Central tube 1 is with main channel and is realized forward sealing with ball 3 and holds high pressure, oppositely without throttling release trapped pressure, reduces the risk of milling, also can not milling directly produce.
Claims (6)
1. a nonmetal easy brill bridging plug, comprise a central tube (1), central tube (1) external diameter upper end is provided with annular boss, lower end is provided with annular groove, is socketed with successively from top to bottom and sets pressure ring (4), the combination of upper slips italic, packing element combination, expanding ring (14), lower sphenoid (15) and lower slips (16) between annular boss and annular groove; It is characterized in that: install slips support (17) in described annular groove, the size of slips support (17) is mated with annular groove size; Annular groove lower central pipe (1) external diameter is also provided with slips bracket (19), slips bracket (19) connects slips support (17) by stop pin (18-1).
2. a kind of nonmetal easy brill bridging plug as claimed in claim 1, is characterized in that: described upper slips italic combination comprises the upper slips (7) and upper sphenoid (9) that connect successively from top to bottom; Upper slips (7) bottom is taper; Upper sphenoid (9) top is taper, and upper sphenoid (9) conical tapers is identical with the tapering of upper slips (7) lower taper.
3. a kind of nonmetal easy brill bridging plug as claimed in claim 1, it is characterized in that: described packing element combination comprises a middle packing element (13) and is arranged in two ends packing element (12) at the upper and lower two ends of packing element (13), it is taper that end packing element (12) contacts with middle packing element (13) two ends connected, the end deviating from packing element (13) is all provided with helmet (11) in the outer helmet (10) of packing element and packing element, middle packing element (13) two ends are taper, identical with end packing element (12) conical tapers.
4. a kind of nonmetal easy brill bridging plug as claimed in claim 1, is characterized in that: the interior latus rectum top of central tube (1) is arranged with ball (3).
5. a kind of nonmetal easy brill bridging plug as claimed in claim 4, is characterized in that: described upper end, central tube (1) annular boss position is provided with pin of blocking (2).
6. a kind of nonmetal easy brill bridging plug as claimed in claim 5, is characterized in that: the described pressure ring (4) that sets is fixed on central tube (1) by shear pin (5-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354781.4U CN204663479U (en) | 2015-05-28 | 2015-05-28 | A kind of nonmetal easy brill bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354781.4U CN204663479U (en) | 2015-05-28 | 2015-05-28 | A kind of nonmetal easy brill bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663479U true CN204663479U (en) | 2015-09-23 |
Family
ID=54133871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520354781.4U Expired - Fee Related CN204663479U (en) | 2015-05-28 | 2015-05-28 | A kind of nonmetal easy brill bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663479U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952412A (en) * | 2016-06-23 | 2016-09-21 | 宝鸡市元亨石油设备有限责任公司 | Saw tooth slip |
| CN106801590A (en) * | 2017-01-20 | 2017-06-06 | 北京中科金腾科技有限公司 | A kind of dissolvable slips and bridging plug |
| CN108571299A (en) * | 2017-03-13 | 2018-09-25 | 中国石油化工股份有限公司 | Bridge plug |
| CN108678707A (en) * | 2018-07-10 | 2018-10-19 | 中国石油天然气股份有限公司 | The dissolvable bridge plug of pressure break |
-
2015
- 2015-05-28 CN CN201520354781.4U patent/CN204663479U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952412A (en) * | 2016-06-23 | 2016-09-21 | 宝鸡市元亨石油设备有限责任公司 | Saw tooth slip |
| CN106801590A (en) * | 2017-01-20 | 2017-06-06 | 北京中科金腾科技有限公司 | A kind of dissolvable slips and bridging plug |
| CN108571299A (en) * | 2017-03-13 | 2018-09-25 | 中国石油化工股份有限公司 | Bridge plug |
| CN108571299B (en) * | 2017-03-13 | 2020-07-31 | 中国石油化工股份有限公司 | Bridge plug |
| CN108678707A (en) * | 2018-07-10 | 2018-10-19 | 中国石油天然气股份有限公司 | The dissolvable bridge plug of pressure break |
| CN108678707B (en) * | 2018-07-10 | 2021-01-29 | 中国石油天然气股份有限公司 | Dissolvable bridge plug for fracturing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204663479U (en) | A kind of nonmetal easy brill bridging plug | |
| US10408011B2 (en) | Downhole tool with anti-extrusion device | |
| CN202181876U (en) | Drilling type composite bridge plug | |
| US10385651B2 (en) | Frac plug with retention mechanisim | |
| CN104196464A (en) | Tubular column string and bridge plug setting and sand blasting perforation combining method | |
| CN202560158U (en) | Drillable combined bridge plug | |
| CN104213864B (en) | Protective device for packer rubber tube | |
| CN104879090A (en) | Fast-drilling composite bridge plug adopting single-slip double-acting structure | |
| CN105507849A (en) | Self-removal bridge plug for fracturing | |
| CN103573211A (en) | Composite bridge plug and central tube thereof | |
| CN105484699A (en) | Drilling and milling-free bridge plug for fracturing | |
| CN202596658U (en) | Packer for plugging water for fishable insert pipe switch | |
| CN105971557A (en) | Completely-dissolvable bridge plug | |
| CN203961938U (en) | Packer staged fracturing technology tube pillar in a kind of horizontal well tube | |
| CN205382910U (en) | Fracturing is with removing bridging plug certainly | |
| CN109869113B (en) | Packing type stage cementing device | |
| CN103470197A (en) | Ceramic slip composite bridge plug | |
| CN201460800U (en) | Reclaimed oil pipe blocking valve | |
| US20130248196A1 (en) | High-capacity single-trip lockdown bushing and a method to operate the same | |
| CN111441741B (en) | Soluble pumpable open temporary plugging bridge plug tool and use method | |
| CN212428713U (en) | Soluble pumpable open type temporary bridge plug tool | |
| CN202266238U (en) | Retrievable bridge plug | |
| CN105672938A (en) | Two-way anchoring mechanical packer | |
| CN203022686U (en) | Removable bridge plug | |
| CN204371210U (en) | Can to disanchor packer |
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: 20150923 Termination date: 20180528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |