CN205477469U - Easy boring prevents changeing anchoring structure - Google Patents
Easy boring prevents changeing anchoring structure Download PDFInfo
- Publication number
- CN205477469U CN205477469U CN201620112556.4U CN201620112556U CN205477469U CN 205477469 U CN205477469 U CN 205477469U CN 201620112556 U CN201620112556 U CN 201620112556U CN 205477469 U CN205477469 U CN 205477469U
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- cone
- back band
- slips
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Abstract
The utility model relates to an oil industry oil recovery gas production equipment field specifically is an easy boring prevents changeing anchoring structure who is used for the pressure bridging plug, including slips, snap ring, cone back band, the slips has 8, and follows the intraductal circumference evenly distributed of cover, the cone back band upwards evenly be equipped with 8 dovetails that suit with aforementioned 8 slipss week, the assembly is tightened by 2 snap rings along the intraductal circumference parallel arrangement of cover to 8 slice aforementioned slipss. The utility model has the advantages of slips structure and cone back band among the pair recombination bridging plug anchoring structure are optimized, improve and sit easy the milling nature of brill of sealing after the perforation fracturing is accomplished to the bridging plug, bore and prevent the rotatory when milling to and the anchoring bearing capacity of slips.
Description
Technical field
This utility model relates to petroleum industry oil recovery gas recovery facility field, is particularly used for a kind of of pressure bridging plug and easily bores anti-rotation anchoring structure.
Background technology
Currently, along with exploitation and the continuous exhaustion of non-renewable energy resources of oil gas field, unconventionaloil pool will become the important reliever relay of the following petroleum gas energy.China's shale gas resource reserve enriches, but owing to shale gas reservoir has the feature of low porosity, extra-low permeability, needs to carry out reservoir reconstruction by multistage multilayer section fracturing technique, just can be effectively improved well yield.The most conventional multistage fracturing technology mainly has open hole packer staged fracturing technology, fixed tubular column water-jet staged fracturing technology, continuous pipe abrasive perforating annular space Sand Fracturing Technology and drilling type composite bridge plug staged fracturing technology etc..
During shale gas well surveying tries, needing to carry out multi-layer testing, layering carries out well stimulation, and producing well carries out multiple zone completion and temporary transient sealing etc. and is required for using bridging plug hierarchical instrument.Generally there is easy bit freezing, bore the shortcomings such as milling difficulty in the bored metal bridging plug used at present.And the bridging plug that composite is made is not on the basis of reducing the tensile strength and comprcssive strength that can bore parts, improve drillability and rotproofness, and composite bridge plug is easier to bore milling, bore the chip lightweight ground, it is easier to go out pit shaft, bit freezing can be prevented, be particularly well-suited to inclined shaft, the separate stratum fracfturing of horizontal well, be acidified and block the operations such as water.In recent years, the technology utilizing nonmetallic composite manufacture easily to bore bridging plug quickly grows abroad, easily bores milling material substitution metal material mainly around prioritizing selection, makes bridging plug be easier to bore milling.
Therefore while using composite bridge plug casing tube well-completion horizontal well staged fracturing technological development, and along with the degree of depth of unconventionaloil pool exploitation increases, the structural requirement of composite bridge plug is improved relatively, particularly in the case of its slip element the most cylinder iron material, require to also improve to easily bore milling, grappling performance and the practical application effect of card tile structure.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, it is provided that a kind of anti-rotation anchoring structure that easily bores, and the easy of raising bridging plug bores milling, anti-rotational property when boring milling, and the grappling performance of slips.
For realizing above-mentioned technical purpose, the scheme that this utility model provides is: a kind of easily brill anti-rotation anchoring structure, including slips, snap ring, cone back band, described slips has 8, and be uniformly distributed along sleeve pipe inner circumferential, being uniformly provided with 8 dovetail grooves adapted with aforementioned 8 slips in the circumference of described cone back band, aforementioned 8 slips are tightened assembling by 2 snap rings be arrangeding in parallel along sleeve pipe inner circumferential.
And, before described slips includes, after, left, right, on, these six end faces lower, upper surface is the serrated face being provided with 5 sawtooth, the crown direction of 5 sawtooth is all towards front end face, first tooth, 3rd tooth, 5th tooth is end tooth, second tooth, 4th tooth is high tooth, stage teeth phase spacing is 0.25mm, crown the right and left curved surface is respectively horizontal by 70 ° and 20 °, face width of tooth is gradually increased from front end face direction to back end, deviation angle is between 8 ° ~ 10 °, annular groove at two is had on serrated face, lay respectively between the first tooth and the second tooth and between the 3rd tooth and the 4th tooth；Lower surface and upper surface are 15 ° ~ 25 ° angles, and lower surface is provided with, with the junction of front end face, the arc surface that radius is 30 ~ 35mm；Left side is symmetrical with right side, all includes the first inclined-plane being connected with upper surface and the second inclined-plane being connected with lower surface, and the first inclined-plane and vertical direction are 5 ° of angles, and the second inclined-plane and lower surface are 60 ° ~ 70 ° angles；Second inclined-plane is provided with the clear opening near front end face, and this clear opening distance with front end face and arc surface respectively is 6 ~ 6.5mm and 7.5 ~ 8mm；Front end face and rear end face are 5 ° of angles；Article two, the mutual saw kerf in 6 ° ~ 10 ° of angles is extended to front end face by lower surface through arc surface, and the width of saw kerf is 0.6 ~ 1.2mm, and the degree of depth is 10 ~ 11mm.
And, described slips uses casting pig manufacture.
And, described cone back band is the cylindrical shape of hollow；It is the chamfering of 60 ° that the cone cylindrical of the conical section of described cone back band and cone inner circle are equipped with open end, the dovetail groove adapted with slips it is evenly arranged on cone cylindrical, the bottom surface of each dovetail groove is 15 ° ~ 25 ° angles with the central axis of cone back band, cone cylindrical is also uniformly arranged at 4 and extends radially through the pin thread hole to inner circle, and this pin thread hole is 25 ~ 26mm with the location dimension of open end；The inner chamber of the back band part of described cone back band is a cone structure, it it is the step surface of a width of 3 ~ 3.5mm between this conical surface and cone inner circle, the open end of step surface and conical section is at a distance of 36 ~ 36.5mm, the conical surface is 120 ° with the angle of step surface, back band part is evenly equipped with 8 ~ 12 joint-cuttings being extended to cone inner circle by back band cylindrical through the conical surface, step surface, joint-cutting is perpendicular to the open end of cone, and the joint-cutting degree of depth is 19.5 ~ 20mm, and width is 0.5 ~ 0.8mm；Be provided with between conical section and the back band part of described cone back band bottom width be 2 ~ 2.5mm, the degree of depth be the endless groove of 8 ~ 10mm, the cone segments side of endless groove is 33 ~ 34mm with the central axis upright of cone back band and the open end away from conical section, and the back band end side surface of endless groove and cone segments side are 10 ° of angles.
And, described cone back band uses glass fiber compound material or carbon fibre composite manufacture.
And, described snap ring is circulus.
And, described snap ring uses carbon fiber combined fiberglass to manufacture.
The beneficial effects of the utility model are: be optimized the card tile structure in composite bridge plug anchoring structure and cone back band, improve the easily brill milling set bridging plug after perforating and fracturing completes, anti-rotational property when boring milling, and the grappling bearing capacity of slips.
Accompanying drawing explanation
Fig. 1 is this utility model the first view.
Fig. 2 is this utility model the second view.
Fig. 3 is the structural representation for slips.
Fig. 4 is the upward view of Fig. 3.
Fig. 5 is the structural representation of cone back band.
Fig. 6 is the left perspective view of Fig. 5.
Fig. 7 is the right perspective view of Fig. 5.
Fig. 8 is the bridging plug citing using this utility model anchoring structure.
Wherein, 1, pressure break resin balls, 2, central canal, 3, shear pin, 4, slips stop ring, 5, copper shear pin, 6, snap ring, 7, slips, 8, cone back band, 9, end gum cover, 10, hold and stay ring, 11, O RunddichtringO, 12, middle gum cover, 13, guide shoe, 14, guide shoe inserted link.15, upper surface, 15.1, first tooth, 15.2, second tooth, 15.3, 3rd tooth, 15.4, 4th tooth, 15.5, 5th tooth, 15.6, annular groove, 16, front end face, 17, left side, 17.1, first inclined-plane, 17.2, second inclined-plane, 17.3, clear opening, 18, lower surface, 18.1, arc surface, 18.2, saw kerf, 19, rear end face, 20, conical section, 20.1, open end, 20.2, chamfering, 20.3, dovetail groove, 20.4, pin thread hole, 21, back band part, 21.1, the conical surface, 21.2, step surface, 21.3, joint-cutting, 22, endless groove, 30, sleeve pipe.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
The present embodiment provides a kind of and easily bores anti-rotation anchoring structure, as depicted in figs. 1 and 2, including slips 7, snap ring 6, cone back band 8, described slips has 8, and be uniformly distributed along sleeve pipe 30 inner circumferential, being uniformly provided with 8 dovetail grooves 20.3 adapted with aforementioned 8 slips 7 in the circumference of described cone back band 8, aforementioned 8 slips 7 are tightened assembling by 2 snap rings 6 be arrangeding in parallel along sleeve pipe 30 inner circumferential.
Further, as shown in Figure 3 and Figure 4, before described slips 7 includes, after, left, right, on, these six end faces lower, upper surface 15 is the serrated face being provided with 5 sawtooth, the crown direction of 5 sawtooth is all towards front end face 16, first tooth 15.1, 3rd tooth 15.3, 5th tooth 15.5 is end tooth, second tooth 15.2, 4th tooth 15.4 is high tooth, stage teeth phase spacing is 0.25mm, crown the right and left curved surface is respectively horizontal by 70 ° and 20 °, face width of tooth from front end face 16 to back end 19 direction be gradually increased, deviation angle is between 8 ° ~ 10 °, annular groove 15.6 at two are had on serrated face, lay respectively between the first tooth 15.1 and the second tooth 15.2 and between the 3rd tooth 15.3 and the 4th tooth 15.4；Lower surface 18 and upper surface 15 are in 15 ° ~ 25 ° angles, and lower surface 18 is provided with, with the junction of front end face 16, the arc surface 18.1 that radius is 30 ~ 35mm；Left side 17 is symmetrical with right side, all includes that the first inclined-plane 17.1 being connected with upper surface 15 and the second inclined-plane 17.2 being connected with lower surface, the first inclined-plane 17.1 are 5 ° of angles with vertical direction, and the second inclined-plane 17.2 and lower surface 18 are in 60 ° ~ 70 ° angles；Second inclined-plane 17.2 is provided with the clear opening 17.3 near front end face 16, and this clear opening 17.3 distance with front end face 16 and arc surface 18.1 respectively is 6 ~ 6.5mm and 7.5 ~ 8mm；Front end face 16 and rear end face 19 are in 5 ° of angles；Article two, the mutual saw kerf 18.2 in 6 ° ~ 10 ° of angles is extended to front end face 16 by lower surface 18 through arc surface 18.1, and the width of saw kerf 18.2 is 0.6 ~ 1.2mm, and the degree of depth is 10 ~ 11mm.
Further, described slips 7 uses casting pig manufacture.
Further, as shown in Fig. 5 ~ Fig. 7, described cone back band 8 is the cylindrical shape of hollow；The cone cylindrical of the conical section 20 of described cone back band 8 and cone inner circle are equipped with open end 20.1 in the chamfering 20.2 of 60 °, the dovetail groove 20.3 adapted with slips 7 it is evenly arranged on cone cylindrical, the bottom surface of each dovetail groove is 15 ° ~ 25 ° angles with the central axis of cone back band 8, in dovetail groove, two sides and ground are all in 60 ° ~ 70 ° angles, and during this structure can make it inlay the slips anti-rotation of cooperation therewith and set, slips effectively slides.Cone cylindrical is also uniformly arranged at 4 and extends radially through the pin thread hole 20.4 to inner circle, and this pin thread hole 20.4 is 25 ~ 26mm with the location dimension of open end 20.1, and pin thread structure can effectively prevent bridging plug premature setting.The inner chamber of the back band part 21 of described cone back band 8 is a cone structure, it it is the step surface 21.2 of a width of 3 ~ 3.5mm between this conical surface 21.1 and cone inner circle, the open end 20.1 of step surface 21.2 and conical section 20 is at a distance of 36 ~ 36.5mm, the conical surface 21.1 is 120 ° with the angle of step surface 21.2, and this structure can be easy to back band and strut when bridging plug sets.Back band part 21 is evenly equipped with 8 ~ 12 joint-cuttings 21.3 being extended to cone inner circle by back band cylindrical through the conical surface 21.1, step surface 21.2, joint-cutting 21.3 is perpendicular to the open end 20.1 of cone, joint-cutting 21.3 degree of depth is 19.5 ~ 20mm, and width is 0.5 ~ 0.8mm, and this structure can conveniently bore milling and auxiliary seal.Be provided with between conical section 20 and the back band part 21 of described cone back band 8 bottom width be 2 ~ 2.5mm, the degree of depth be the endless groove 22 of 8 ~ 10mm, the cone segments side of endless groove 22 is 33 ~ 34mm with the central axis upright of cone back band 8 and the open end 20.1 away from conical section, and the back band end side surface of endless groove 22 and cone segments side are 10 ° of angles.
Further, described cone back band 8 uses glass fiber compound material or carbon fibre composite manufacture.
Further, described snap ring 6 is circulus, can use carbon fiber combined fiberglass manufacture.
As shown in Fig. 8, easily bore anti-rotation press-fracturing bridge plug and include pressure break resin balls 1, central canal 2, shear pin 3, slips stop ring 4, copper shear pin 5, snap ring 6, slips 7, cone back band 8, end gum cover 9, hold and stay ring 10, O RunddichtringO 11, middle gum cover 12, guide shoe 13, guide shoe inserted link 14.Removing glue set uses elastomeric material, and slips uses outside cast iron materials, and remaining part material all uses strong resin composite materials.
It is taper seat end that pressure break resin balls 1 is placed in central canal 2 inner hole section, in sealing state, and inserts with guide shoe inserted link 14 and uses viscose glue to prevent from coming off in the hole on central canal 2 simultaneously, makes pressure break resin balls 1 be placed in one its abjection central bore of an anti-rotation.Slips 7 is often organized 8 and corresponding with the dovetail groove 20.3 in cone back band 8 is inlayed, and often group uses two snap rings 6 to inlay as in the annular groove 15.6 of slips 7 outer surface so that slips 7, snap ring 6, cone back band 8 three fix.It is installed under gum cover on central canal 2, and is provided with to hold in middle gum cover 12 and stays ring 10, hold to stay in ring 10 ring recess is equipped with O RunddichtringO 11.Guide shoe 13 employing is threadedly connected on central canal 2 and installs fixing guide shoe inserted link 14 and use viscose glue to prevent from coming off in guide shoe 13.
Easily boring anti-rotation press-fracturing bridge plug can use hydraulic setting tool or cable setting tool to realize setting and giving up, setting tool and bridging plug use pin to connect, gunpowder (cable setting tool) or hydraulic pressure (hydraulic setting tool) power are converted into axial thrust by the piston of setting tool, the thrust that setting tool produces sits the setting sleeve for matching and back-off sub, the slips stop ring on bridging plug is promoted to move downward, the upper slips of extruding bridging plug.Meanwhile, owing to counteracting force makes to occur relative motion, central canal to drive guide shoe upwards to do relative motion between setting sleeve and central canal, thus bridging plug central canal upwardly lower slips is driven.Under up Yu descending bidirectional force effect, upper and lower cone compresses gum cover expands, and reaches to insulate the purpose of pit shaft.When upper lower slips slides in cone, arriving certain distance, upper lower slips tightly engages sleeve pipe, it is tightened to the coordinating of gum cover, slips and sleeve pipe incompressible and time pressure reaches certain value, cut off release pin so that setting tool disengages with bridging plug, completes action of giving up.
Owing to easy brill anti-rotation anchoring system of the present utility model is in addition to slips uses cast iron, remaining is all to use the composite easily bored as bridging plug main body, can conveniently bore milling after construction.Described upper lower slips teeth directional is relative, is engaged on internal surface of sleeve pipe after grappling, prevents from collecting together up and down, and described slips and cone back band are inlayed and can be prevented slips during boring milling from rotating.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvement or deformation, these improve or deformation also should be regarded as protection domain of the present utility model.
Claims (7)
1. an easy brill anti-rotation anchoring structure, including slips, snap ring, cone back band, it is characterized in that: described slips has 8, and be uniformly distributed along sleeve pipe inner circumferential, being uniformly provided with 8 dovetail grooves adapted with aforementioned 8 slips in the circumference of described cone back band, aforementioned 8 slips are tightened assembling by 2 snap rings be arrangeding in parallel along sleeve pipe inner circumferential.
One the most according to claim 1 easily bores anti-rotation anchoring structure, it is characterized in that: before described slips includes, after, left, right, on, these six end faces lower, upper surface is the serrated face being provided with 5 sawtooth, the crown direction of 5 sawtooth is all towards front end face, first tooth, 3rd tooth, 5th tooth is end tooth, second tooth, 4th tooth is high tooth, stage teeth phase spacing is 0.25mm, crown the right and left curved surface is respectively horizontal by 70 ° and 20 °, face width of tooth is gradually increased from front end face direction to back end, deviation angle is between 8 ° ~ 10 °, annular groove at two is had on serrated face, lay respectively between the first tooth and the second tooth and between the 3rd tooth and the 4th tooth；Lower surface and upper surface are 15 ° ~ 25 ° angles, and lower surface is provided with, with the junction of front end face, the arc surface that radius is 30 ~ 35mm；Left side is symmetrical with right side, all includes the first inclined-plane being connected with upper surface and the second inclined-plane being connected with lower surface, and the first inclined-plane and vertical direction are 5 ° of angles, and the second inclined-plane and lower surface are 60 ° ~ 70 ° angles；Second inclined-plane is provided with the clear opening near front end face, and this clear opening distance with front end face and arc surface respectively is 6 ~ 6.5mm and 7.5 ~ 8mm；Front end face and rear end face are 5 ° of angles；Article two, the mutual saw kerf in 6 ° ~ 10 ° of angles is extended to front end face by lower surface through arc surface, and the width of saw kerf is 0.6 ~ 1.2mm, and the degree of depth is 10 ~ 11mm.
One the most according to claim 1 and 2 easily bores anti-rotation anchoring structure, it is characterised in that: described slips uses casting pig manufacture.
One the most according to claim 1 easily bores anti-rotation anchoring structure, it is characterised in that: described cone back band is the cylindrical shape of hollow；It is the chamfering of 60 ° that the cone cylindrical of the conical section of described cone back band and cone inner circle are equipped with open end, the dovetail groove adapted with slips it is evenly arranged on cone cylindrical, the bottom surface of each dovetail groove is 15 ° ~ 25 ° angles with the central axis of cone back band, cone cylindrical is also uniformly arranged at 4 and extends radially through the pin thread hole to inner circle, and this pin thread hole is 25 ~ 26mm with the location dimension of open end；The inner chamber of the back band part of described cone back band is a cone structure, it it is the step surface of a width of 3 ~ 3.5mm between this conical surface and cone inner circle, the open end of step surface and conical section is at a distance of 36 ~ 36.5mm, the conical surface is 120 ° with the angle of step surface, back band part is evenly equipped with 8 ~ 12 joint-cuttings being extended to cone inner circle by back band cylindrical through the conical surface, step surface, joint-cutting is perpendicular to the open end of cone, and the joint-cutting degree of depth is 19.5 ~ 20mm, and width is 0.5 ~ 0.8mm；Be provided with between conical section and the back band part of described cone back band bottom width be 2 ~ 2.5mm, the degree of depth be the endless groove of 8 ~ 10mm, the cone segments side of endless groove is 33 ~ 34mm with the central axis upright of cone back band and the open end away from conical section, and the back band end side surface of endless groove and cone segments side are 10 ° of angles.
5. according to a kind of easily brill anti-rotation anchoring structure described in claim 1 or 4, it is characterised in that: described cone back band uses glass fiber compound material or carbon fibre composite manufacture.
One the most according to claim 1 easily bores anti-rotation anchoring structure, it is characterised in that: described snap ring is circulus.
7. according to a kind of easily brill anti-rotation anchoring structure described in claim 1 or 6, it is characterised in that: described snap ring uses carbon fiber combined fiberglass to manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620112556.4U CN205477469U (en) | 2016-02-02 | 2016-02-02 | Easy boring prevents changeing anchoring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620112556.4U CN205477469U (en) | 2016-02-02 | 2016-02-02 | Easy boring prevents changeing anchoring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477469U true CN205477469U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620112556.4U Withdrawn - After Issue CN205477469U (en) | 2016-02-02 | 2016-02-02 | Easy boring prevents changeing anchoring structure |
Country Status (1)
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| CN (1) | CN205477469U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545237A (en) * | 2016-02-02 | 2016-05-04 | 四机赛瓦石油钻采设备有限公司 | Anti-rotation anchoring structure beneficial to drilling |
| CN110017403A (en) * | 2019-03-26 | 2019-07-16 | 中国石油集团川庆钻探工程有限公司 | Method for fixing oil testing pipeline |
| CN111779465A (en) * | 2020-04-22 | 2020-10-16 | 中国石油天然气股份有限公司 | Soluble fracturing ball seat |
| CN112031698A (en) * | 2020-09-01 | 2020-12-04 | 四机赛瓦石油钻采设备有限公司 | Combined type anchoring slip |
-
2016
- 2016-02-02 CN CN201620112556.4U patent/CN205477469U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545237A (en) * | 2016-02-02 | 2016-05-04 | 四机赛瓦石油钻采设备有限公司 | Anti-rotation anchoring structure beneficial to drilling |
| CN110017403A (en) * | 2019-03-26 | 2019-07-16 | 中国石油集团川庆钻探工程有限公司 | Method for fixing oil testing pipeline |
| CN111779465A (en) * | 2020-04-22 | 2020-10-16 | 中国石油天然气股份有限公司 | Soluble fracturing ball seat |
| CN112031698A (en) * | 2020-09-01 | 2020-12-04 | 四机赛瓦石油钻采设备有限公司 | Combined type anchoring slip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20180824 |
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| AV01 | Patent right actively abandoned |