CN204175218U - A kind of two core grabber compound cuts concentric mechanism - Google Patents
A kind of two core grabber compound cuts concentric mechanism Download PDFInfo
- Publication number
- CN204175218U CN204175218U CN201420451814.2U CN201420451814U CN204175218U CN 204175218 U CN204175218 U CN 204175218U CN 201420451814 U CN201420451814 U CN 201420451814U CN 204175218 U CN204175218 U CN 204175218U
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- core
- grabber
- inner core
- utility
- footwear
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Abstract
The utility model relates to a kind of two core grabber compound and cuts concentric mechanism.The inner core of this device, adapter sleeve, inner core footwear, totally-enclosed core grabber are connected in turn, and inner core footwear are provided with core gripper with slip, and drill bit inner chamber bottom is provided with inclined-plane.The utility model achieves and successfully can carry out cutting heart operation on broken, the soft or hard stratum that interlocks, and ensure core recovery, structure is simple, easy to operate, safe and reliable.Overcome the deficiency that core grabber is not suitable for fragmentation, soft or hard interlocks stratum of existing hard formation coring tool and porous Stratigraphic coring tool.
Description
Technical field:
The utility model relates to a kind of oil drilling coring tool, and particularly a kind of two core grabber compound cuts concentric mechanism.
Background technology:
Core grabber is the critical component remained on by rock core when cutting the heart and trip-out at the end of drilling and coring delivery creeps in inner core, hard formation coring tool core grabber is only suitable for hard formation and cuts the heart both at home and abroad at present, porous Stratigraphic coring tool core grabber can only cut the heart at scall, broken, soft or hard are interlocked stratum, owing to cutting the uncertainty of heart position formation cementation, the core grabber of hard formation coring tool and porous Stratigraphic coring tool all has certain limitation.As hard formation core grabber does not cut the heart at comparatively hard formation, easily cause rock core to drop, affect core recovery; As cut the heart at comparatively hard formation, then there is rock core and cut continuous risk in porous Stratigraphic coring tool.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of two core grabber compound and cuts concentric mechanism, and the arrangement achieves and successfully can carry out cutting heart operation on broken, the soft or hard stratum that interlocks, ensure core recovery, structure is simple, easy to operate, safe and reliable.Overcome the deficiency that core grabber is not suitable for fragmentation, soft or hard interlocks stratum of existing hard formation coring tool and porous Stratigraphic coring tool.
Technical solution adopted in the utility model is: a kind of two core grabber compound cuts concentric mechanism, and comprise inner core, urceolus and drill bit, inner core is placed in urceolus, and urceolus lower end connects drill bit; Inner core, adapter sleeve, inner core footwear, totally-enclosed core grabber are connected in turn, and inner core footwear are provided with core gripper with slip, and drill bit inner chamber bottom is provided with inclined-plane.
The beneficial effects of the utility model are: the mode that the utility model is used in combination owing to have employed core gripper with slip and totally-enclosed core grabber, thus have and can successfully carry out cutting the function of heart operation on broken, the soft or hard stratum that interlocks, ensure core recovery, structure is simple, easy to operate, safe and reliable.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of two core grabber compound cuts concentric mechanism, and comprise inner core 1, urceolus 2 and drill bit 7, inner core 1 is placed in urceolus 2, and urceolus 2 lower end connects drill bit 7; Inner core 1, adapter sleeve 3, inner core footwear 4, totally-enclosed core grabber 6 are connected in turn, inner core footwear 4 are provided with core gripper with slip 5, and drill bit 7 inner chamber bottom is provided with inclined-plane.
At the end of core-drilling, the ball that has high input builds the pressure and position-limitting pin is cut off, and promote inner core 1 descending, totally-enclosed core grabber 6 contacts the inclined-plane of drill bit 7 inner chamber bottom, shrinks, encase rock core under the effect of inner core 1 thrust.On carry drilling tool, as rock core does not cut off, core gripper with slip 5 along the descending contraction of inner core footwear 4, draws tighter and tighter when above carrying drilling tool until pull off rock core under the effect of frictional force, thus realize the sealing of inner core 1 bottom rock core, effectively avoid the risk cannot cut off with rock core that drops of rock core.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a two core grabber compound cuts concentric mechanism, comprise inner core (1), urceolus (2) and drill bit (7), inner core (1) is placed in urceolus (2), and urceolus (2) lower end connects drill bit (7); It is characterized in that: inner core (1), adapter sleeve (3), inner core footwear (4), totally-enclosed core grabber (6) are connected in turn, inner core footwear (4) are provided with core gripper with slip (5), drill bit (7) inner chamber bottom is provided with inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451814.2U CN204175218U (en) | 2014-08-12 | 2014-08-12 | A kind of two core grabber compound cuts concentric mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451814.2U CN204175218U (en) | 2014-08-12 | 2014-08-12 | A kind of two core grabber compound cuts concentric mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175218U true CN204175218U (en) | 2015-02-25 |
Family
ID=52564035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420451814.2U Expired - Fee Related CN204175218U (en) | 2014-08-12 | 2014-08-12 | A kind of two core grabber compound cuts concentric mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016191792A1 (en) * | 2015-06-05 | 2016-12-08 | Benthic Geotech Pty Ltd | Rotary coring apparatus |
-
2014
- 2014-08-12 CN CN201420451814.2U patent/CN204175218U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016191792A1 (en) * | 2015-06-05 | 2016-12-08 | Benthic Geotech Pty Ltd | Rotary coring apparatus |
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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: 20150225 Termination date: 20150812 |
|
| EXPY | Termination of patent right or utility model |