CN204754865U - Ball seat bumps and presses seat combination tool for well cementation - Google Patents
Ball seat bumps and presses seat combination tool for well cementation Download PDFInfo
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- CN204754865U CN204754865U CN201520380323.8U CN201520380323U CN204754865U CN 204754865 U CN204754865 U CN 204754865U CN 201520380323 U CN201520380323 U CN 201520380323U CN 204754865 U CN204754865 U CN 204754865U
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Abstract
The utility model relates to a ball seat bumps and presses seat combination tool for well cementation in the drilling tool field, including connecting the body, the seat is pressed in bumping of leading to during joint body internal fixation is equipped with, there is well logical ball seat through cuting pin joint in bumping the pressure seat, the internal orifice of ball seat upper end is equipped with the interior conical surface of ball face seal complex that seals usefulness with the seat, the ball seat bumps from bumping that to press a seat internal channel to pass through the plug subassembly sealed after pressing the seat to hit down, the plug subassembly includes the plug of dabber and the sealed usefulness of dabber upper segment periphery, the dabber hypomere with bump press the seat in a zhou peihe be connected to be equipped with the sealing washer on the dabber hypomere outer wall and be used for the lock solid dabber and bump the jump ring of pressing the seat, a plug and a joint body crush seal that bumps pressure seat upper end, the dabber of plug downside is equipped with and bumps the seat complex starting taper portion that presses outward, bump the pressure seat and go up the corresponding interior pyramis that is equipped with. The utility model discloses a ball seat bumps a pressure seat combination tool can of the subtracting well cementation string structure to can prevent well cementation back cement against the current.
Description
Technical field
The utility model relates to the drilling tool field in oil field or natural gas extraction use, the well cementation ball seat impacting seat combination tool particularly in a kind of underground work.
Background technology
Along with the development of petroleum gas drilling and production technology, the complex structural well of oil field development gets more and more, and in order to ensure cementing quality, reduce well cementation cost, generally uses the instruments such as sizing collar, extension hanger, external packer of pipe and hydraulic centralizing device in well cementing operation.At present, it is setting that these instruments are generally hydraulic control, and therefore need increases ball seat on well cementation tubing string.In well cementing process, first pitching, shutoff pressure channel, makes hydraulic tool sit and hangs, then hit ball seat down and set up circulation canal, throw plug, carry out normal cementing operation.In prior art, the pitching of this employing plays pressure, then the cover that skids exposes the form that instrument sidewall outage sets up circulation, and after causing well cementation, cement paste is from outage adverse current, therefore needs well head to build the pressure to wait solidifying.In addition, plug, impacting seat and ball seat, add the connector of well cementation tubing string, aggravation well cementation risk.
Utility model content
The utility model is for well cementation ball socket structure Problems existing of the prior art, there is provided a kind of by ball seat and impacting seat integrated and be convenient to down-hole float collar, float shoe with the use of well cementation ball seat impacting seat combination tool, to simplify cementing tool structure, and cement adverse current after can preventing from cementing the well.
The purpose of this utility model realizes like this, a kind of well cementation ball seat impacting seat combination tool, comprise joint body, the top and bottom of described joint body are respectively equipped with the joint screw thread be connected with well casing post, impacting seat logical during described joint body internal fixtion is provided with, the perimembranous that described impacting seat and joint body are connected is provided with sealing ring, ball seat logical in being connected with by shear pin in described impacting seat, the internal orifice of described ball seat upper end is provided with the inner conical surface coordinated with setting ball face seal, the perimembranous that described ball seat and impacting seat are connected is provided with sealing ring, described ball seat hits rear impacting seat internal channel down by plug component sealing from impacting seat, described plug assembly comprises the plug of mandrel and the sealing of mandrel epimere periphery, described mandrel hypomere and impacting seat inner circumferential are connected, and mandrel hypomere outer wall is provided with sealing ring and for preventing mandrel and plug to drive in the wrong direction jump ring, the joint body crush seal of described plug and impacting seat upper end, the starting taper portion coordinated with impacting seat is provided with outside mandrel on the downside of described plug, on described impacting seat, correspondence is provided with interior tapering.
The well cementation ball seat impacting seat combination tool of this structure, is arranged in joint body by ball seat and impacting seat, is directly connected with casing string, has simplified the structure of well cementation tubing string, reduces well cementation risk.In work, the top and bottom of joint body are connected with casing string by pipe thread, and the tubing string of downside is connected with float collar float shoe device.During well cementation uses, first suppress from well head to pitching in well, ball, under deadweight and fluid forces, sets on ball seat, continue pressurization in tubing string, reach hydraulic pressure cementing tool and preset operating pressure, complete fixing action, and then continue pressurization, cut off shear pin, ball and ball seat fall into float collar; Plug assembly is dropped into again from well head, and suppress plug assembly is advanced into impacting seat, the cone on mandrel is made to lead portion downwards against on the inner conical surface of impacting seat, restriction plug assembly continues descending, and fills in glue and joint body and the crush seal of casing string inwall and sealed by siphunculus in impacting seat and tubing string.Meanwhile, jump ring is installed between mandrel and impacting seat, prevents the inefficacy of float collar ball-and-seat, cement paste drives in the wrong direction the plug regression caused.
For preventing the effect retrograde of mandrel and plug reflux hydraulic coupling in column jecket further, described mandrel hypomere is provided with the seal groove for installing sealing ring and the draw-in groove for installing jump ring, described jump ring under external force can in draw-in groove radial expansion, described impacting seat is provided with stopper slot corresponding to jump ring, and the periphery of described jump ring is lower little large taper.The jump ring mounting structure of this structure, when mandrel is advanced into impacting seat and is resisted against inner conical surface, jump ring is just in time installed between draw-in groove and stopper slot, when mandrel lower end has reverse hydraulic coupling to promote mandrel, the jump ring of unidirectional pyramidal structure just in time fixes in stopper slot, can prevent mandrel and whole plug assembly from driving in the wrong direction, thus ensure the sealing performance that plug is reliable and stable.
For ensureing the sealing performance of plug further, described plug integrated vulcanizing is in the periphery of axle core epimere and afterbody, and plug periphery is provided with some leather cup type pawls being convenient to make plug advance from well head to down-hole, and the outside dimension of described pawl increases from bottom to top one by one.
For improving the fastness that plug is connected with mandrel further, the outer wall that described mandrel coordinates with plug is provided with the rectangular teeth cooperatively interacted.
After falling into float collar float plug for preventing ball seat, the passage in ball seat is blocked, the downside sidewall that described ball seat and impacting seat are connected be circumferentially with some radial grooves, described radial groove is vertically in long waist shaped.
Therefore, well cementation ball seat impacting seat combination tool of the present utility model has following beneficial effect: 1. ball seat and impacting seat unitary design, direct splicing sleeve, decreases well cementation tubing string number of parts, reduces well cementation risk; 2. simplified string, connects basket without the need to ball seat, avoids the risk that ball seat affects overcurrent in float collar, float shoe; 3. with float collar, float shoe with the use of, prevent cement paste to drive in the wrong direction phenomenon; 4. when avoiding float collar, float shoe blow-by, because of the plug phenomena of regression that stratum countercurrent liquid pressure causes; 5. ball seat can directly be connected with casing string, and length is short, and all component structurals are compact, do not affect cementing operation; 6. the well cementation ball seat impacting seat combination tool of this structure is also applicable to common plug bruising, and because ball seat bottom is connected with float collar, float shoe, so common plug also can not regression under normal circumstances, plug end face and impacting seat inner conical surface fitted seal realize bruising.
Accompanying drawing explanation
Fig. 1 is the structural representation of well cementation ball seat impacting seat combination tool of the present utility model pitching when suppressing well cementation.
Fig. 2 is the structural representation dropping into plug component sealing in well cementation ball seat impacting seat combination tool of the present utility model.
Wherein, 1 joint body; 2 impacting seats; Tapering in 2A; 2B stopper slot; 3 balls; 4 shear pins; 5 ball seats; The radial groove of 5A; 6 plug assemblies; 6A plug; 6B mandrel; 7 jump rings.
Detailed description of the invention
Be well cementation ball seat impacting seat combination tool of the present utility model as depicted in figs. 1 and 2, comprise joint body 1, the top and bottom of joint body 1 are respectively equipped with the joint screw thread be connected with well casing post, impacting seat 2 logical in being fixedly connected with by screw thread in joint body 1, the perimembranous that impacting seat 2 and joint body 1 are connected is provided with sealing ring, ball seat 5 logical in being connected with by shear pin 4 in impacting seat 2, the internal orifice of ball seat 5 upper end is provided with the inner conical surface coordinated with setting ball 3 face seal, the perimembranous that ball seat 5 and impacting seat 2 are connected is provided with sealing ring, ball seat 5 is hit down rear impacting seat internal channel from impacting seat 2 and is sealed by plug assembly 6, plug assembly 6 comprises the plug 6A of mandrel 6B and the sealing of mandrel 6B epimere periphery, mandrel 6B hypomere and impacting seat 2 inner circumferential are connected, and mandrel hypomere outer wall is provided with sealing ring and for preventing mandrel 6B and plug 6A to drive in the wrong direction jump ring 7, joint body 1 crush seal of plug 6A and impacting seat 2 upper end, the starting taper portion coordinated with impacting seat 2 is provided with outside mandrel 6B on the downside of plug 6A, on impacting seat, correspondence is provided with interior tapering 2A.
In the present embodiment, the effect retrograde of mandrel 6B and plug 6A reflux hydraulic coupling in column jecket, mandrel 6B hypomere is provided with the seal groove for installing sealing ring and the draw-in groove for installing jump ring 7, jump ring 7 under external force can in draw-in groove radial expansion, impacting seat 2 is provided with stopper slot 2B corresponding to jump ring 7, and the periphery of jump ring 7 is lower little large taper.The jump ring mounting structure of this structure, when mandrel 6B is advanced into impacting seat 2 and starting taper portion is resisted against interior tapering 2A, jump ring 7 is just in time installed between draw-in groove and stopper slot 2B, when mandrel 6B lower end has reverse hydraulic coupling to promote mandrel, the jump ring 7 of unidirectional pyramidal structure just in time fixes in stopper slot 2B, can prevent mandrel 6B and whole plug assembly from driving in the wrong direction, thus ensure the sealing performance that plug is reliable and stable.
For ensureing the sealing performance of plug further, plug 6B integrated vulcanizing is in the periphery of axle core 6B epimere and afterbody, and plug 6A periphery is provided with some leather cup type pawls being convenient to that plug 6B is advanced from well head to down-hole, and described pawl is taper, up big and down small, often enclose pawl measure-alike.
For improving the fastness that plug 6A is connected with mandrel 6B further, the outer wall that described mandrel 6B coordinates with plug 6A is provided with the rectangular teeth cooperatively interacted.
After falling into float collar float plug for preventing ball seat 5, the passage in ball seat 5 is blocked, the downside sidewall that described ball seat 5 and impacting seat 2 are connected be circumferentially with some radial groove 5A, radial groove 5A is vertically in long waist shaped.
The well cementation ball seat impacting seat combination tool of this structure, is arranged in joint body 1 by ball seat 5 and impacting seat 2, is directly connected with casing string, has simplified the structure of well cementation tubing string, has improved fixed efficiency.In work, the top and bottom of joint body 1 are connected with casing string by pipe thread, and the tubing string of downside is connected with float collar float shoe device.As shown in Figure 1, during well cementation uses, first suppress from well head to pitching in well, ball 3, under deadweight and fluid forces, sets on ball seat 5, pressurization is continued in tubing string, reach hydraulic pressure cementing tool and preset operating pressure, complete fixing action, and then continue pressurization, cut off shear pin 4, ball 3 and ball seat 5 fall into float collar; Plug assembly 6 is dropped into again from well head, and suppress plug assembly 6 is advanced into impacting seat 2, the cone on mandrel 6B is made to lead portion downwards against on tapering 2B in impacting seat 2, restriction plug assembly 6 continues descending, and fill in glue 6B and joint body 1 and the crush seal of casing string inwall siphunculus in impacting seat and tubing string is sealed, as shown in Figure 2.Meanwhile, jump ring 7 is installed between mandrel 6B and impacting seat 2, prevents the inefficacy of float collar ball-and-seat, cement paste drives in the wrong direction the plug regression caused.
Claims (5)
1. a well cementation ball seat impacting seat combination tool, comprise joint body, the top and bottom of described joint body are respectively equipped with the joint screw thread be connected with well casing post, impacting seat logical during described joint body internal fixtion is provided with, the perimembranous that described impacting seat and joint body are connected is provided with sealing ring, ball seat logical in being connected with by shear pin in described impacting seat, the internal orifice of described ball seat upper end is provided with the inner conical surface coordinated with setting ball face seal, the perimembranous that described ball seat and impacting seat are connected is provided with sealing ring, it is characterized in that, described ball seat hits rear impacting seat internal channel down by plug component sealing from impacting seat, described plug assembly comprises the plug of mandrel and the sealing of mandrel epimere periphery, described mandrel hypomere and impacting seat inner circumferential are connected, and mandrel hypomere outer wall is provided with sealing ring and the jump ring for lock mandrel and impacting seat, the joint body crush seal of described plug and impacting seat upper end, the starting taper portion coordinated with impacting seat is provided with outside mandrel on the downside of described plug, on described impacting seat, correspondence is provided with interior tapering.
2. well cementation ball seat impacting seat combination tool according to claim 1, it is characterized in that, described mandrel hypomere is provided with the seal groove for installing sealing ring and the draw-in groove for installing jump ring, described jump ring under external force can in draw-in groove radial hypertonic, described impacting seat is provided with stopper slot corresponding to jump ring, and the periphery of described jump ring is lower little large taper.
3. well cementation ball seat impacting seat combination tool according to claim 2, it is characterized in that, described plug integrated vulcanizing is in the periphery of axle core epimere and afterbody, and plug periphery is provided with some leather cup type pawls being convenient to make plug advance from well head to down-hole, and described pawl is taper, up big and down small, often enclose pawl measure-alike.
4. well cementation ball seat impacting seat combination tool according to claim 3, it is characterized in that, the outer wall that described mandrel coordinates with plug is provided with the rectangular teeth cooperatively interacted.
5. well cementation ball seat impacting seat combination tool according to claim 1, is characterized in that, the downside sidewall that described ball seat and impacting seat are connected be circumferentially with some radial grooves, described radial groove is vertically in long waist shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380323.8U CN204754865U (en) | 2015-06-05 | 2015-06-05 | Ball seat bumps and presses seat combination tool for well cementation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380323.8U CN204754865U (en) | 2015-06-05 | 2015-06-05 | Ball seat bumps and presses seat combination tool for well cementation |
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| CN204754865U true CN204754865U (en) | 2015-11-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120088A (en) * | 2016-02-25 | 2017-09-01 | 中国石油化工股份有限公司 | Seal receptacle and ball sealer |
| CN107842339A (en) * | 2016-09-18 | 2018-03-27 | 中国石油天然气股份有限公司 | Oil-water well cement injecting method |
| CN108894747A (en) * | 2018-06-19 | 2018-11-27 | 中国石油天然气股份有限公司 | Completion tubular column bore seal of cementing the well and fluid power control device for opening |
| CN110735610A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | soluble pressing plug |
| CN113090224A (en) * | 2019-12-23 | 2021-07-09 | 中国石油天然气股份有限公司 | Guide shoe for well cementation and expansion suspension well cementation tubular column |
-
2015
- 2015-06-05 CN CN201520380323.8U patent/CN204754865U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120088A (en) * | 2016-02-25 | 2017-09-01 | 中国石油化工股份有限公司 | Seal receptacle and ball sealer |
| CN107842339A (en) * | 2016-09-18 | 2018-03-27 | 中国石油天然气股份有限公司 | Oil-water well cement injecting method |
| CN108894747A (en) * | 2018-06-19 | 2018-11-27 | 中国石油天然气股份有限公司 | Completion tubular column bore seal of cementing the well and fluid power control device for opening |
| CN110735610A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | soluble pressing plug |
| CN113090224A (en) * | 2019-12-23 | 2021-07-09 | 中国石油天然气股份有限公司 | Guide shoe for well cementation and expansion suspension well cementation tubular column |
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