CN201386513Y - Core barrel joint - Google Patents
Core barrel joint Download PDFInfo
- Publication number
- CN201386513Y CN201386513Y CN200920096269U CN200920096269U CN201386513Y CN 201386513 Y CN201386513 Y CN 201386513Y CN 200920096269 U CN200920096269 U CN 200920096269U CN 200920096269 U CN200920096269 U CN 200920096269U CN 201386513 Y CN201386513 Y CN 201386513Y
- Authority
- CN
- China
- Prior art keywords
- water channel
- core
- core barrel
- central water
- upper port
- 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.)
- Expired - Lifetime
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- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a core barrel joint which comprises a joint body, a central water channel and a connecting part for connecting the core barrel, wherein the central water channel is connected with a water control pipe; the water control pipe is provided with transverse washing fluid outlets which are communicated with the joint body and the central water channel and are uniformly distributed; the central water channel is provided with an upper port which takes the shape of an inverted cone; and the upper port is provided with a cylindrical plug rod which can drop and close the central water channel. The transverse outlets of the joint lead the washing fluid to be sprayed to the inner wall of the core barrel, thus avoiding direct scouring of the core. After drilling and round trip, clamping and recovery of core are conducted; the cylindrical plug rod is put in the inverted-conical upper port of the core barrel to close the central water channel by a drill pipe before the drill is hoisted, thus causing the washing fluid in the drill pipe to be separated from the core barrel, further avoiding pressure-disengaging of the core by the washing fluid in the drill pipe and preventing the core from falling off, therefore, the core recovery rate and success rate are improved. The core barrel joint has the prominent advantages of simple structure and convenient operation.
Description
Technical field
The utility model belongs to drilling equipment, particularly relates to a kind of core barrel head.
Background technology
The rock core of flushing liquor outlet in basket of its bottom of existing core barrel head, rock core directly washes away the lower part with loose distortion flushing liquor, not only causes core recovery percentage low, can not truly reflect the structure on stratum.
For overcoming the defective of above-mentioned core barrel head, a kind of loop type core barrel head arises at the historic moment, this joint is made up of the joint center-pole of jointed rod and sliding sleeve two parts of socket and center-pole, interior six side's slip joint of outer six sides of center-pole and sliding sleeve, center-pole is provided with boss and the sealing ring that is engaged in the sliding sleeve upper port, the sliding sleeve bottom connects basket, and center-pole is provided with horizontal weep hole, and the center-pole bottom is provided with rubber gasket.Described sliding sleeve moves on relatively and makes weep hole jet douche liquid in basket under the state of creeping into, promoting under the basket state described sliding sleeve moves down relatively and seals weep hole, the rubber gasket and the sliding sleeve engaged closed water channel of while center-pole bottom, the flushing liquor in the drilling rod is discharged from spilled water hole.
Above-mentioned loop type core barrel head be easy to take place seal damages and drilling process in the jammed phenomenon of sliding sleeve, all cause the poorly sealed and spillage of sliding sleeve, thereby cause drilled dry bottom the basket, cause and creep into difficulty.Or when carrying brill, cause the interior rock core of basket to come off owing to sliding sleeve is poorly sealed, thereby reduced core recovery percentage.
Summary of the invention
The utility model is to be easy to take place the jammed technical problem of sliding sleeve in sealing mat damage and the drilling process and to propose a kind of core barrel head in order to solve the loop type basket.
The utility model is taked following technical scheme for achieving the above object: this core barrel head is by joint body, the center water channel, flushing liquor laterally outlet is formed with the connecting portion that is connected basket, wherein the lower port in edema with the heart involved road is connected with water control pipe, described water control pipe is provided with connection joint body center water channel and equally distributed flushing liquor laterally exports, described center water channel is provided with the upper port of back taper, this upper port is provided with the cylindricality stopper rod that can crash into and the center water channel is sealed, described cylindricality stopper rod is provided with fairshaped termination and middle part shoulder, and the diameter of described middle part shoulder is greater than center water channel diameter, less than the drilling rod internal diameter.
The beneficial effects of the utility model and advantage are: this core barrel head is provided with the water control pipe of horizontal outlet, make flushing liquor transversely export directive basket inwall, avoided direct souring to rock core, flushing liquor flow at the bottom of the hole along inwall, hell is returned in gap by basket and hole wall, finishes circulation and realizes wash boring, cooling drill bit.Creep into the round trip end of a period and block coring, before carrying brill, throw in the cylindricality stopper rod and the blocked center water channel to the upper port of core barrel head back taper by drilling rod, flushing liquor and basket in the drilling rod are isolated, avoid flushing liquor in the drilling rod to the pressure-off effect of rock core, avoid rock core to come off, thereby improved core recovery percentage and success rate.The utlity model has simple in structure, easy to operate outstanding advantage.
Description of drawings
Accompanying drawing 1 is the example structure generalized section.
Number in the figure: 1 basket, 2 connecting portions, 3 joint bodies, the 3-1 upper port, 3-2 center water channel, the 3-3 water control pipe, the 3-4 flushing liquor laterally exports, 3-5 plug, 4 cylindricality stopper rods, 4-1 middle part shoulder.
The specific embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing thereof.
Embodiment as shown in Figure 1, this core barrel head comprises joint body 3 and the connecting portion 2 that is connected basket 1.The lower port of center water channel 3-2 is connected with water control pipe 3-3, and water control pipe is provided with connection joint body center water channel and equally distributed flushing liquor laterally exports 3-4 and plug 3-5 forms.The center water channel 3-2 of joint body is provided with the upper port 3-1 of back taper, this upper port is provided with and can crashes into and make the cylindricality stopper rod 4 of center water channel sealing from drilling rod, the cylindricality stopper rod is provided with fairshaped termination and middle part shoulder 4-1, and the diameter of middle part shoulder is greater than center water channel diameter, less than the drilling rod internal diameter.
Claims (1)
1, a kind of core barrel head, formed by joint body, center water channel and the connecting portion that is connected basket, it is characterized in that: the lower port of center water channel is connected with water control pipe, described water control pipe is provided with connection joint body center water channel and equally distributed flushing liquor laterally exports, described center water channel is provided with the upper port of back taper, this upper port is provided with the cylindricality stopper rod that can crash into and the center water channel is sealed, described cylindricality stopper rod is provided with fairshaped termination and middle part shoulder, and the diameter of described middle part shoulder is greater than center water channel diameter, less than the drilling rod internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920096269U CN201386513Y (en) | 2009-04-13 | 2009-04-13 | Core barrel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920096269U CN201386513Y (en) | 2009-04-13 | 2009-04-13 | Core barrel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386513Y true CN201386513Y (en) | 2010-01-20 |
Family
ID=41579046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920096269U Expired - Lifetime CN201386513Y (en) | 2009-04-13 | 2009-04-13 | Core barrel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386513Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806177A (en) * | 2015-03-03 | 2015-07-29 | 铁道第三勘察设计院集团有限公司 | Core tube assembly |
| CN109372456A (en) * | 2018-12-03 | 2019-02-22 | 邹城兖矿泰德工贸有限公司 | Core barrel |
| CN117927749A (en) * | 2024-03-22 | 2024-04-26 | 胜利油田胜机石油装备有限公司 | Novel heat insulation coupling for heat insulation pipe |
-
2009
- 2009-04-13 CN CN200920096269U patent/CN201386513Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806177A (en) * | 2015-03-03 | 2015-07-29 | 铁道第三勘察设计院集团有限公司 | Core tube assembly |
| CN104806177B (en) * | 2015-03-03 | 2017-08-25 | 铁道第三勘察设计院集团有限公司 | A kind of rock core pipe assembly |
| CN109372456A (en) * | 2018-12-03 | 2019-02-22 | 邹城兖矿泰德工贸有限公司 | Core barrel |
| CN117927749A (en) * | 2024-03-22 | 2024-04-26 | 胜利油田胜机石油装备有限公司 | Novel heat insulation coupling for heat insulation pipe |
| CN117927749B (en) * | 2024-03-22 | 2024-05-17 | 胜利油田胜机石油装备有限公司 | Novel heat insulation coupling for heat insulation pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee after: China Railway Design Group Limited Address before: 300251 No. 10 Minjiang Road, Minquan gate, Tianjin, Hebei District Patentee before: China Railway Third Survey and Design Institute Group Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |