CN200943464Y - Combined type suspended internal receptacle for bushing - Google Patents
Combined type suspended internal receptacle for bushing Download PDFInfo
- Publication number
- CN200943464Y CN200943464Y CN 200620137005 CN200620137005U CN200943464Y CN 200943464 Y CN200943464 Y CN 200943464Y CN 200620137005 CN200620137005 CN 200620137005 CN 200620137005 U CN200620137005 U CN 200620137005U CN 200943464 Y CN200943464 Y CN 200943464Y
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- socket
- utility
- casing
- internal
- model
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- Expired - Fee Related
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Abstract
The utility model pertains to an underground cementing tool, particularly a combination-type telescopic hanging internal socket, which supports the grouting with the underground hanging interpolating method. The technical scheme is as follows: the utility model includes a connector plug and a socket, the upper and lower ends of the socket body is arranged with internal and external threads to connect with the oil well casing, the thread of the upper half of the socket body is connected with a fixed internal pipe, the internal pipe has on the lower end part a bench edge, the bench edge has on the lower part a fixed hollow rubber plug through shear pins, the hollow rubber plug has on the periphery a sealing element; the connector plug body has on the upper end threads to connect with the drill rod and on the lower end a necking head, the necking head has on the periphery a sealing ring, and the necking head and the internal pipe in the socket form a splicing match. Considering the need of the new technology of Total Process Unbalanced Drilling, the utility model provides a special design to realize the cementing operation through drill rods, which solves the problem that the cementing operation through the casing affects the casing valve and ensures the normal Pressure Bumping. The utility model ensures the safety and improves the quality in cementing operation.
Description
Technical field:
The utility model relate to the unsettled interpolation method in a kind of down-hole annotate mud supporting down-hole cementing tool, specifically be the unsettled interpolation block of a kind of combined casing.
Background technology:
" overall process under-balance drilling " is a kind of new drilling technology of more effective protection oil-gas Layer, and this drilling technology need a kind of special tool casing valve on the bunch tube of upper strata realizes by being connected.Because casing valve is the middle and upper part that is connected sleeve pipe, the well cementing operation of conventional waterflooding mud, cement paste will pass through this valve, and Can Yu cement paste can influence its operate as normal and lose efficacy like this.
Summary of the invention:
The purpose of this utility model is exactly the needs at " overall process under-balance drilling " this new drilling technology, provide a kind of combined casing unsettled interpolation block, change the influence of sleeve pipe cementing to next casing valve by this device, realization is connected with drilling rod carries out cementing job.
Its technical scheme is: comprise plug and socket two parts, the jack body upper and lower end is provided with the internal and external screw thread that is connected with oil well casing, first half internal thread at jack body is fixedly connected with inner core, the bottom of inner core is provided with the platform edge, platform is fixed with hollow plug along the bottom by shear pin, and the periphery of hollow plug is provided with seal; The header body upper end is provided with and the drilling rod connecting thread, and the bottom is the undergauge head, and the undergauge head is provided with sealing ring outward, and the undergauge head is pegged graft with the inner core formation in the socket and cooperated.On the header body of the top of undergauge head, radially be provided with wiper block, and the undergauge head with above the joint portion be set with sealing mat, wiper block and sleeve pipe and jack body upper end form grafting and cooperate.
The utility model is in conjunction with the needs of current " overall process under-balance drilling " new technology, specialized designs is a kind of to realize well cementing operation by drilling rod, both solved by the influence of casing cementing job casing valve, can realize normal " bruising " again, guarantee cementing operation safety, improved cementing quality.
Description of drawings:
Accompanying drawing 1 is a socket part structure chart of the present utility model; Accompanying drawing 2 is plug portion structure charts of the present utility model.
Specific embodiment:
This embodiment comprises plug and socket two parts.With reference to accompanying drawing 1, jack body 1 upper and lower end is provided with the internal and external screw thread that is connected with oil well casing, is connected between the sleeve pipe.First half internal thread at jack body 1 is fixedly connected with inner core 2.The bottom of inner core 2 is provided with the platform edge, and platform is fixed with hollow plug 4 along the bottom by shear pin 3.The periphery of hollow plug 4 is provided with sealing ring and realizes and bobbin seal.
With reference to accompanying drawing 2, header body 5 upper ends are provided with and the drilling rod connecting thread, and the bottom is the undergauge head, and the undergauge head is provided with sealing ring 8 outward.Undergauge head 8 is pegged graft with the inner core formation in the socket and is cooperated.On the header body of the top of undergauge head, radially be provided with wiper block 6, and the undergauge head with above the joint portion be set with sealing mat 7.Wiper block 6 forms to peg graft with sleeve pipe and jack body upper end and cooperates, and guarantees that plug cooperates with the socket grafting smoothly.
During use, socket is connected between the sleeve pipe of casing valve bottom, descended before the sleeve pipe cementing, with the drilling rod connection plug is inserted in the socket, and by exerting pressure in the drilling rod, examination seals successfully laggard capable cementing, and cement paste enters the bottom sleeve pipe after by drilling rod, plug, spring back at last around the borehole wall, realize well cementation.After cementing finishes, discharge the drilling rod plug in plug, after pressurization back drilling rod plug and hollow plug are compound, cut off shear pin, two plugs are integrated descending, produce bruising behind the arrival retainer ring, and cementing job is finished.Pull out of hole, treat that cement paste condenses after, the following socket inner core that drills through has promptly been realized overall process under-balance drilling.
Claims (2)
1, the unsettled interpolation block of a kind of combined casing, it is characterized in that: comprise plug and socket two parts, the jack body upper and lower end is provided with the internal and external screw thread that is connected with oil well casing, first half internal thread at jack body is fixedly connected with inner core, the bottom of inner core is provided with the platform edge, platform is fixed with hollow plug along the bottom by shear pin, and the periphery of hollow plug is provided with seal; The header body upper end is provided with and the drilling rod connecting thread, and the bottom is the undergauge head, and the undergauge head is provided with sealing ring outward, and the undergauge head is pegged graft with the inner core formation in the socket and cooperated.
2, the unsettled interpolation block of combined casing according to claim 1, it is characterized in that: on the header body of the top of undergauge head, radially be provided with wiper block, and the undergauge head with above the joint portion be set with sealing mat, wiper block and sleeve pipe and jack body upper end become the grafting cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620137005 CN200943464Y (en) | 2006-05-23 | 2006-09-05 | Combined type suspended internal receptacle for bushing |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620084825.7 | 2006-05-23 | ||
| CN200620084825 | 2006-05-23 | ||
| CN 200620137005 CN200943464Y (en) | 2006-05-23 | 2006-09-05 | Combined type suspended internal receptacle for bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200943464Y true CN200943464Y (en) | 2007-09-05 |
Family
ID=38718097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620137005 Expired - Fee Related CN200943464Y (en) | 2006-05-23 | 2006-09-05 | Combined type suspended internal receptacle for bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200943464Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425640A (en) * | 2018-02-02 | 2018-08-21 | 中国石油天然气集团有限公司 | Floating coupling for casing |
-
2006
- 2006-09-05 CN CN 200620137005 patent/CN200943464Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425640A (en) * | 2018-02-02 | 2018-08-21 | 中国石油天然气集团有限公司 | Floating coupling for casing |
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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 |