CN105019864A - Shock resistant pressure bearing device - Google Patents
Shock resistant pressure bearing device Download PDFInfo
- Publication number
- CN105019864A CN105019864A CN201410249623.2A CN201410249623A CN105019864A CN 105019864 A CN105019864 A CN 105019864A CN 201410249623 A CN201410249623 A CN 201410249623A CN 105019864 A CN105019864 A CN 105019864A
- Authority
- CN
- China
- Prior art keywords
- bearing device
- pressure bearing
- device body
- piston ring
- annular space
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a shock resistant pressure bearing device, comprising a pressure bearing device body, a piston ring and a lower joint, wherein the pressure bearing device body is of a hollow tubular structure; the inner diameter at the bottom end of the pressure bearing device body is reduced to bear a seated packer; the upper end and the waist of the pressure bearing device body are respectively provided with threads for connecting an upper string structure with the lower joint; the lower end of the lower joint is provided with threads for connecting a lower string; an annular space is formed between the outer side of the lower part of the pressure bearing device body and the inner side of the lower string structure in the lower joint connected with the pressure bearing device body; a piston ring fixed at the periphery of the lower part of the pressure bearing device body through a shear pin is positioned in the annular space, and a pressure seal is formed between the piston ring and the annular space; the pressure bearing body positioned above the piston ring is provided with a plurality of circulating holes which are communicated with the annular space above the piston ring. The shock resistant pressure bearing device can be recycled in strings, is shock resistant, is not limited to circulating displacement and can avoid the problem that the shear pin shears in advance or cannot shear.
Description
Technical field
The present invention relates to a kind of downhole tool of petroleum industry, be specifically related to a kind of shock resistance pressure bearing device.
Background technology
In Oil production sites construction, often need to carry out liquid-circulating operation.In the pilot process of circulation, sometimes need to drop into ball or plug class blanking plug, be located in the pressure bearing device of certain position, down-hole, temporary plugging central tube endoporus, thus reach the object utilizing hydraulic operation downhole tool.After operation terminates, in order to reach the requirement continuing circulation, require that pressure bearing device must be designed with movable pedestal, under certain hydraulic action, pressure bearing device can discharge, and realizes recycling.At the scene in construction, for horizontal well or other special wells, after dropping into blanking plug, blanking plug can not lean on free gravity to fall or need to assist, and the on-the-spot general way by turn on pump circulating fluid, i.e. pumping, sends to pressure bearing device by blanking plug.When blanking plug arrives the pedestal of pressure bearing device, interior pipe circulation is closed instantaneously, and the fluid column of whole interior tubing string can form a huge forward impact power (inertia force) to pressure bearing device.
Pressure bearing device conventional at present, mainly contains fixing pressure bearing device and activity pressure bearing device two kinds of forms.Fixing pressure bearing device is fixedly connected on structure between upper lower tubular column by screw thread, namely directly connect, after blanking plug is taken a seat, can the impact force suffered by upper surface analysis be transferred on tubing string, tubing string can sustain this strength, meets the requirement of anti-liquid-column impingement, but blanking plug is once be seated in pressure bearing device, can not recycling be realized, can not meet the construction requirement of recycling.
Existing activity pressure bearing device body is connected with upper lower tubular column by screw thread, then within the body construction by some shear pins pedestal being fixed on pressure bearing device, the blanking plug by gravity or pumping is seated in after within pedestal, the endoporus of temporary transient shutoff central tube; Operation terminates, and applies downward hydraulic coupling shear pin is cut off release pressure bearing device pedestal from ground.But such activity pressure bearing device exists following defect: the 1. quantity of pressure bearing device design and installation shear pin, be that the piston force produced according to the upper and lower differential static pressure of pressure bearing device calculates, do not consider the dynamic impact forces that fluid column moves; 2. the enormous impact power that above-mentioned pressure bearing device occurs after taking a seat, may cause the shear pin of pedestal and body may because bearing incessantly this impact force and being cut off in advance, pressure bearing device pedestal is discharged in advance, does not reach required force value, namely do not have the object that shutoff central tube carries out underground work; 3. ground judges to ground pressure table the situation that blanking plug is taken a seat by pressure-wave emission, because compression wave has the certain spread speed compressibility of the liquid (cause), if well is deep, when the pressure rising that fluid column ends generation instantaneously is not also delivered to ground pressure table, if shear pin moment is cut off, due to the pressure differential collapses that cut-off produces, ground pressure table will not have stress reaction, will show in construction that blanking plug does not arrive the analysis conclusion of pressure bearing device, to the erroneous judgement bringing blanking plug not take a seat of constructing.For the above-mentioned defect of current activity pressure bearing device, if in order to improve activity pressure bearing device impact resistance, the quantity in design by increasing shear pin sustains above-mentioned impact force.But because this impact force is instant impact, when in tubing string, namely liquid motion causes this impact force to disappear once stopping, ground pump truck just needs to improve liquid column hydrostatic pressure and shear pin could be cut off, if at this moment liquid column hydrostatic pressure is excessive will bring risk to safe construction, so work as liquid column hydrostatic pressure once reach safety margins, if shear pin can't be cut off, namely there will be the problem that pedestal cannot discharge, can not meet the construction requirement of recycling equally.
In sum, the deficiency of existing pressure bearing device existence self, can not meet on-the-spot recycling and shock proof dual needs, is therefore necessary to improve prior art.
Summary of the invention
In order to overcome the deficiency that prior art exists, the object of the present invention is to provide a kind of shock resistance pressure bearing device, not only can meet temporary plugging central tube in operation process and carry out managing the needs of interior pressurization, and can shock resistance and recycling, accurately can also judge the situation that blanking plug is taken a seat.
In order to realize foregoing invention object, the technical solution used in the present invention is as follows:
A kind of shock resistance pressure bearing device, is characterized in that, comprise pressure bearing device body, piston ring and lower contact; Pressure bearing device body is hollow tubular structure, and its bottom internal diameter shrinks to accept the blanking plug of taking a seat, and its upper end and waist arrange screw thread respectively, is used for connecting upper tube rod structure and lower contact; An annular space is formed between the inner side of the lower contact middle and lower part tubular column structure be connected outside pressure bearing device body lower part and with pressure bearing device body; The piston ring being fixed on pressure bearing device body lower part periphery by shear pin is positioned within described annular space, and piston ring and described annular space mineralization pressure seal; The pressure bearing device body position be positioned on piston ring arranges multiple circulation port, to be communicated with the annular space on the intrinsic hollow tube of pressure bearing device and piston ring.
Further, described pressure bearing device body threaded upper ends is positioned at the inwall of described hollow tubular structure, is connected with upper tube male screw; Pressure bearing device body waist screw thread is positioned at the periphery of described hollow tubular structure, and be connected with lower contact threaded upper ends, lower contact lower end is connected with bottom tubing string by screw thread.
Beneficial effect of the present invention comprise following some:
1) recycling problem in tubing string can not only be realized, and shock resistance, not by circulation row quantitative limitation.
2) the impact forces major part caused instantaneously when being located in the undergauge of hollow tube lower end by blanking plug acts on tubing string, pressure control valve and piston ring be not by the impact of instant impact, Stress control is accurate, and shear pin can be avoided to shear the problem maybe can not sheared in advance.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1: the activity pressure bearing device structural representation of prior art
Fig. 2: shock resistance pressure bearing device structural representation of the present invention.
In figure: 1-pressure bearing device body; 2-piston ring; 3-annular space; 4-shear pin; 5-circulation port; 6-pressure bearing device body threaded upper ends; 7-top tubing string; 8-pressure bearing device body waist screw thread; 9-lower contact; 10-bottom tubing string.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 2, shock resistance pressure bearing device provided by the present invention, comprises pressure bearing device body 1, piston ring 2 and lower contact 9; Pressure bearing device body 1 is hollow tubular structure, and its bottom internal diameter shrinks to accept the blanking plug of taking a seat, and its upper end and waist arrange screw thread 6 and screw thread 8 respectively, is used for connecting upper tube rod structure 7 and lower contact; An annular space 3 is formed between pressure bearing device body 1 lower outside and the inner side of lower contact 9 middle and lower part tubular column structure be connected with pressure bearing device body 1; The piston ring 2 being fixed on pressure bearing device body 1 lower, outer perimeter by shear pin 4 is positioned within described annular space 3, and piston ring and described annular space 3 mineralization pressure seal; Pressure bearing device body 1 pipe wall position be positioned on piston ring 2 arranges multiple circulation port 5, to be communicated with the hollow tube in pressure bearing device body 1 and the annular space 3 on piston ring 2.
Described pressure bearing device body 1 threaded upper ends 6 is positioned at the inner side of described hollow tubular structure, is threaded with top tubing string 7; Pressure bearing device body 1 waist screw thread 8 is positioned at the periphery of described hollow tubular structure, is connected with lower contact 9 threaded upper ends, and lower contact 9 lower end is connected with bottom tubing string 10 by screw thread.
During construction, shock resistance pressure bearing device provided by the invention is connected to the appropriate location on tubing string, and is lowered into downhole designs installation site with tubing string, surface pump applies hydraulic coupling, can circulate.
Need turn on pump circulation time, the liquid in top tubing string 7 is entered in bottom tubing string 10 by the hollow tube in pressure bearing device body 1 and lower contact 9, realizes pipeline circulation unimpeded.
When in needs rising tubing string, pressure carries out temporary plugging, drop into blanking plug, can pumping blanking plug when needing, when blanking plug arrives the pressure bearing device of tubing string, blanking plug is by the hollow tube in pressure bearing device body 1, enter centre bore, be located in the pedestal undergauge place of hollow tube bottom, hollow tube bottom center hole is blocked, form sealing, form enclosure space in whole sleeve pipe, reach the object of pressurization in tubing string, in managing, provide pressure support ventilation.When taking a seat in blanking plug arrival undergauge place, hollow tube bottom, fluid column ends instantaneously, fluid column forward impact power is converted into mechanical force by pressure bearing device body 1, be directly delivered on top tubing string 7, now in tubing string, hydraulic pressure is liquid column hydrostatic pressure, and shear pin can sustain this liquid column hydrostatic pressure, because piston 2 and shear pin 4 are not subject to the impact of forward impact power, avoid the problem that shear pin 4 is cut off in advance, avoid construction erroneous judgement.
When needs recycling, apply hydraulic coupling by surface pump, raise liquid column hydrostatic pressure in tubing string, hydraulic pressure is delivered on piston 2 by the circulation port 5 that pressure bearing device body 1 is arranged, and is delivered on shear pin 4 and pressure bearing device body 1 to the pressure of piston 2; When slow raised pressure is to design load, shear pin 4 is cut off, it is descending that pressure promotes piston 2, until the annular space 3 between inside pressure bearing device body 1 lower outside and lower contact is unimpeded, liquid in top tubing string 7, by circulation port 5, annular space 3 and lower contact 9, enter in bottom tubing string 10, realize the recycling of pipeline.
The present embodiment object is to make professional and technical personnel in the field understand technical scheme of the present invention according to it and to be implemented; the protection domain of this patent can not be limited with it; the present invention of all foundations discloses the distortion that technology is done, and all falls within protection scope of the present invention.
Claims (2)
1. a shock resistance pressure bearing device, is characterized in that, comprises pressure bearing device body, piston ring and lower contact; Pressure bearing device body is hollow tubular structure, and its bottom internal diameter shrinks to accept the blanking plug of taking a seat, and its upper end and waist arrange screw thread respectively, is used for connecting upper tube rod structure and lower contact; An annular space is formed between the inner side of the lower contact middle and lower part tubular column structure be connected outside pressure bearing device body lower part and with pressure bearing device body; The piston ring being fixed on pressure bearing device body lower part periphery by shear pin is positioned within described annular space, and piston ring and described annular space mineralization pressure seal; The pressure bearing device body position be positioned on piston ring arranges multiple circulation port, to be communicated with the annular space on the intrinsic hollow tube of pressure bearing device and piston ring.
2. a shock resistance pressure bearing device, is characterized in that, described pressure bearing device body threaded upper ends is positioned at the inwall of described hollow tubular structure, is connected with upper tube male screw; Pressure bearing device body waist screw thread is positioned at the periphery of described hollow tubular structure, and be connected with lower contact threaded upper ends, lower contact lower end is connected with bottom tubing string by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249623.2A CN105019864A (en) | 2014-06-06 | 2014-06-06 | Shock resistant pressure bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249623.2A CN105019864A (en) | 2014-06-06 | 2014-06-06 | Shock resistant pressure bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105019864A true CN105019864A (en) | 2015-11-04 |
Family
ID=54410107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410249623.2A Pending CN105019864A (en) | 2014-06-06 | 2014-06-06 | Shock resistant pressure bearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105019864A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535788A (en) * | 2020-06-23 | 2020-08-14 | 胜利油田新大管业科技发展有限责任公司 | Safety joint for separate layer water injection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625571Y (en) * | 2003-05-30 | 2004-07-14 | 中国石化胜利油田有限公司采油工艺研究院 | Impacting seat for well cementing |
| CN201723196U (en) * | 2010-07-02 | 2011-01-26 | 中国石油集团川庆钻探工程有限公司 | Self-sealing setting ball seat |
| CN202946100U (en) * | 2012-12-07 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Halfway well cementation self-grouting float collar |
| CN203175459U (en) * | 2013-03-26 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Setting ball seat |
| CN204002708U (en) * | 2014-06-06 | 2014-12-10 | 中国海洋石油总公司 | A kind of shock resistance pressure bearing device |
-
2014
- 2014-06-06 CN CN201410249623.2A patent/CN105019864A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625571Y (en) * | 2003-05-30 | 2004-07-14 | 中国石化胜利油田有限公司采油工艺研究院 | Impacting seat for well cementing |
| CN201723196U (en) * | 2010-07-02 | 2011-01-26 | 中国石油集团川庆钻探工程有限公司 | Self-sealing setting ball seat |
| CN202946100U (en) * | 2012-12-07 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Halfway well cementation self-grouting float collar |
| CN203175459U (en) * | 2013-03-26 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Setting ball seat |
| CN204002708U (en) * | 2014-06-06 | 2014-12-10 | 中国海洋石油总公司 | A kind of shock resistance pressure bearing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535788A (en) * | 2020-06-23 | 2020-08-14 | 胜利油田新大管业科技发展有限责任公司 | Safety joint for separate layer water injection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207080207U (en) | Oil field separates adopts technology tubular column | |
| RU2444607C1 (en) | Bore-hole disconnector | |
| CN109763784B (en) | Split bridge plug hydraulic setting tool and setting method thereof | |
| CN204002708U (en) | A kind of shock resistance pressure bearing device | |
| CN101871332A (en) | Multi-way releasing device | |
| CN105019864A (en) | Shock resistant pressure bearing device | |
| CN204984339U (en) | Sit and seal special use of oil removal layer from pressurization control ware | |
| CN204457616U (en) | Combined oil drainage device for horizontal well and pipe column | |
| CN208669264U (en) | A kind of recyclable packer of big orifice | |
| RU2533514C1 (en) | Slot perforator | |
| CN106285559A (en) | Pressure-controlled normally open valve and pressure-controlled normally close valve combination unit and operational approach thereof | |
| CN103573213A (en) | Underground instantaneous boosting tool and method | |
| CN201723196U (en) | Self-sealing setting ball seat | |
| CN104100206A (en) | Drill bit with stabilizer | |
| CN204283312U (en) | A kind of downhole blow-out preventer | |
| CN203685288U (en) | Underground coal mine water exploration drilling water control device | |
| CN204140014U (en) | A kind of K344 type packer with twin-stage packing units | |
| CN108060910A (en) | Circulating valve | |
| CN203321475U (en) | Oil field horizontal well clustering sliding sleeve fracturing string | |
| RU2493353C1 (en) | Packer assembly | |
| CN202249867U (en) | Oil draining anchoring device of oil pipe | |
| CN101881142B (en) | Self-sealing setting ball seat | |
| CN202645951U (en) | Energy-saving rod-type deep well oil pump | |
| CN204920867U (en) | Circulated hanger of horizontal well screen pipe | |
| RU146622U1 (en) | IMPLOSIVE PRESSURE HYDROGENERATOR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |