CN203362086U - Coring barrel structure capable of being used for coring of inclined shaft - Google Patents
Coring barrel structure capable of being used for coring of inclined shaft Download PDFInfo
- Publication number
- CN203362086U CN203362086U CN2013203942547U CN201320394254U CN203362086U CN 203362086 U CN203362086 U CN 203362086U CN 2013203942547 U CN2013203942547 U CN 2013203942547U CN 201320394254 U CN201320394254 U CN 201320394254U CN 203362086 U CN203362086 U CN 203362086U
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- Prior art keywords
- stabilizer
- inclined shaft
- coring
- core barrel
- barrel structure
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Abstract
The utility model relates to a coring barrel structure capable of being used for coring of an inclined shaft. The coring barrel structure capable of being used for coring of the inclined shaft is characterized in that more than two annular stabilizers (1) adhere to the outer wall of an inner barrel (3) in the axial direction, the installing separation distance between every two adjacent stabilizers (1) is 2.5-4m, and the outer diameter of each stabilizer (1) is smaller than the inner diameter of an outer barrel and a coring barrel. The coring barrel structure capable of being used for coring of the inclined shaft is applicable to coring of an inclined shaft section on the situation that the inclination of the inclined shaft is 0-60 degrees, and has the advantages of being high in yield, simple in operation, low in cost and like.
Description
Technical field
The utility model relates to CORING TECHNOLOGY field, oil drilling rock stratum, particularly a kind ofly can be used for the core barrel structure that inclined shaft is cored.
Background technology
While drilling for oil Oil/gas Well, in some zones, the rock stratum of down-hole need to be taken out and carried out indoor assessment.To got rock core, there are length, diameter equidimension and yield rate that requirement is arranged.Now straight well section normal core-extracting tool can meet the requirement of coring, but at lower curved section because original inner core suspension can only guarantee the concentricity of core barrel inner core and urceolus under the straight well plumbness, guarantee the relatively independent motion of inner/outer tube.The core barrel inner core is different with the urceolus rigidity, and when lower curved section is cored, inner core leans against on outer tube inner wall, can not realize the relatively independent motion of inner core, thereby affect the inner core rock core, advances the heart, affects yield rate.
The utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to have proposed a kind of core barrel structure that inclined shaft is cored that can be used for, and in the 0-60 of being applicable to of the present utility model ° of hole deviation situation, lower curved section is cored, and has the characteristics such as yield rate is high, simple to operate, cost is low.
The utility model is achieved by the following technical solution: can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: inner tank theca is bonded with the stabilizer of annular more than at least 2 vertically; Installing space between each stabilizer is 2.5-4 rice; The stabilizer external diameter is less than core barrel urceolus internal diameter.
Described stabilizer is symmetrical structure, and the middle part of stabilizer is with a plurality of rib bands, and the two ends of stabilizer are conical.
The hardness of described stabilizer is lower than the core barrel urceolus.
The material of described stabilizer is nonmetallic wear-resistant material.
Described rib band is horizontally-arranged, vertical setting of types or helical arrangement.
Described nonmetallic wear-resistant material is abrasive rubber or wear-resistant plastic.
The beneficial effects of the utility model are:
1, because adopting inner tank theca, the utility model adds stabilizer, this scheme compared with prior art, have and do not purchase in addition core barrel, can realize that by inner tank theca being carried out to simple machine lower curved section cores, be applicable to various mud system wellbore constructions, can effectively improve the lower curved section core recovery.
2, described stabilizer can be fixed on inner core, and hardness is lower than the core barrel urceolus, and the stabilizer external diameter is less than core barrel urceolus internal diameter, thereby makes the core barrel outer tube inner wall not be prone to groove iso-stress fault zone, core barrel inner core and urceolus concentricity while having guaranteed work.
3, the rib band of described stabilizer is horizontally-arranged, vertical setting of types or helical arrangement; The rib band is a plurality of, forms mud between adjacent digonous band and crosses chute.
The accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is made to further supplementary notes:
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is Fig. 1 midship section structure schematic diagram.
In figure, 1, stabilizer; 2, rib band; 3, inner core.
The specific embodiment
Of the present utility modelly can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: inner core 3 outer walls are bonded with the stabilizer 1 of annular more than at least 2 vertically; Installing space between each stabilizer 1 is 2.5-4 rice; Stabilizer 1 external diameter is less than core barrel urceolus internal diameter.
With reference to Figure of description 1 and 2, of the present utility modelly can be used for the core barrel structure that inclined shaft is cored, inner core 3 outer walls of this structure are bonded with the stabilizer 1 of annular more than 2 vertically; Installing space between each stabilizer 1 is 4 meters; Stabilizer 1 external diameter is less than core barrel urceolus internal diameter.
On the basis of embodiment 1, as illustrated in fig. 1 and 2, described stabilizer 1 is symmetrical structure, and the middle part of stabilizer 1 is cylindrical with a plurality of rib bands 2, and the two ends of stabilizer 1 are conical.Described rib band 2 is helical arrangement, and rib band 2 is a plurality of, forms mud between adjacent digonous band and crosses chute.The hardness of described stabilizer 1 is lower than the core barrel urceolus, and stabilizer 1 material is abrasive rubber.The stabilizer material must be lower than urceolus, otherwise urceolus is ground to groove, scraps urceolus, and of the present utility model needs to change stabilizer and get final product.
General core barrel is when underground work, and inner core does not rotate, and urceolus rotates with drilling tool.When lower curved section is used core barrel, there will be inner core to lean against on urceolus and rotate together, thereby affect yield rate.The utility model is used stabilizer structure, has both guaranteed the relatively independent motion of inner/outer tube, must not change again original core barrel structure.
Embodiment 3
On the basis of embodiment 2, described rib band 2 can also be horizontally-arranged on stabilizer 1 mid-section body or vertical setting of types is arranged; Described stabilizer 1 material is wear-resistant plastic.
The material of the stabilizer 1 in above-described embodiment can also be other nonmetallic wear-resistant material.
Stabilizer in the utility model structure is applied to the appropriate position of core barrel inner tank theca, and the stabilizer external diameter is less than core barrel urceolus internal diameter.The utility model structure is applicable to lower curved section in 0-60 ° of hole deviation situation and cores, and has the characteristics such as yield rate is high, simple to operate, cost is low.
The utility model is not limited to above-described embodiment, and according to the description of above-described embodiment, those of ordinary skill in the art also can make some apparent changes, but within these changes all should fall into the protection domain of the utility model claim.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (6)
1. can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: inner core (3) outer wall is bonded with the stabilizer (1) of annular more than at least 2 vertically; Installing space between each stabilizer (1) is 2.5-4 rice; Stabilizer (1) external diameter is less than core barrel urceolus internal diameter.
2. according to claim 1ly can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: described stabilizer (1) is symmetrical structure, and the middle part of stabilizer (1) is with a plurality of rib bands (2), and the two ends of stabilizer (1) are conical.
3. according to claim 1 and 2ly can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: the hardness of described stabilizer (1) is lower than the core barrel urceolus.
4. according to claim 1ly can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: the material of described stabilizer (1) is nonmetallic wear-resistant material.
5. according to claim 2ly can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: described rib band (2) is horizontally-arranged, vertical setting of types or helical arrangement.
6. according to claim 4ly can be used for the core barrel structure that inclined shaft is cored, it is characterized in that: described nonmetallic wear-resistant material is abrasive rubber or wear-resistant plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203942547U CN203362086U (en) | 2013-07-04 | 2013-07-04 | Coring barrel structure capable of being used for coring of inclined shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203942547U CN203362086U (en) | 2013-07-04 | 2013-07-04 | Coring barrel structure capable of being used for coring of inclined shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362086U true CN203362086U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203942547U Expired - Fee Related CN203362086U (en) | 2013-07-04 | 2013-07-04 | Coring barrel structure capable of being used for coring of inclined shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916663A (en) * | 2019-04-18 | 2019-06-21 | 中煤科工集团重庆研究院有限公司 | Dislocation closed type sealed sampling device and using method thereof |
-
2013
- 2013-07-04 CN CN2013203942547U patent/CN203362086U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916663A (en) * | 2019-04-18 | 2019-06-21 | 中煤科工集团重庆研究院有限公司 | Dislocation closed type sealed sampling device and using method thereof |
| CN109916663B (en) * | 2019-04-18 | 2021-06-08 | 中煤科工集团重庆研究院有限公司 | Dislocation closed type sealed sampling device and using method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20200704 |