CN200961458Y - Middle cylinder core-picking tool capable of adjusting core-length - Google Patents
Middle cylinder core-picking tool capable of adjusting core-length Download PDFInfo
- Publication number
- CN200961458Y CN200961458Y CN 200620093555 CN200620093555U CN200961458Y CN 200961458 Y CN200961458 Y CN 200961458Y CN 200620093555 CN200620093555 CN 200620093555 CN 200620093555 U CN200620093555 U CN 200620093555U CN 200961458 Y CN200961458 Y CN 200961458Y
- Authority
- CN
- China
- Prior art keywords
- coring
- core
- barrel
- core tube
- length
- 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 - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model relates to a drill-coring tool, in particular to a middle cylinder coring tool with adjustable coring length, which comprises internal barrels connected with an upper connector, wherein a bearing case and an external barrel are connected between the upper connector and the internal barrel through a ring-shaped locking nut with female fasteners on the two ends. The axial distance of the internal barrels can be adjusted depending on a screw mandrel regulating mechanism of a hanger assembly system on the upper end of the barrel. The utility model solves the problem of single barrel coring tools of the prior art caused by the gap between the internal barrel core assembly lower end surface and the coring drill bit stabilizing lower end surface being incapable of controlled within 8-10 millimeters, thereby affecting the coring. The tool has accurate adjustment, and the parameter is not changed in the operation of the coring, which greatly improves the drilling coring yielding rate.
Description
Technical field:
The utility model relates to the drilling extracting core instrument, especially a kind of middle tube coring tool of getting core length of regulating.
Background technology:
Drilling extracting core has very significance in oil field prospecting and development process, get core and can be correct understanding stratigraphic structure, seek and find that the oil field lays the foundation, and generally speaking, the length of getting core is determining to get the quality of core, tin get in the river 8-3 monotubular coring tool of core being used at present, because core tube core pawl assembly lower surface and coring bit are set upright between the lower surface and are difficult to levelling for value between the crack of 8-10 millimeter is subjected to its structural limitations in the coring tool, and precision is hanged down the wayward core length of getting when getting core when adjusting, and core is got in influence.
The utility model content:
The utility model purpose is in order to overcome above-mentioned shortcoming, and a kind of middle tube coring tool of getting core length of regulating that provides, can be implemented under the situation that maintenance core tube suspension assembly is constant on the monotubular coring tool basis and pass through to increase axial distance and retaining mechanism, overcome interior core tube and relied on adapter sleeve length to regulate the drawback of getting core length.
Technical scheme:
For reaching above-mentioned purpose, the utility model comprises by the interior core tube of top connection connection and forming that between described top connection and the interior core tube, the circular locking nut that has box by two ends is connecting bearing box and outer rock core tube.The screw mandrel governor motion that the axial distance of core tube relies in this core tube upper end hanger assembly system in described is regulated.
The utility model working method is:
During use, bearing box and top connection are by screwed connection, the locking nut upper end is screwed in the bearing box lower end with screw thread, the locking nut lower end is screwed in the upper end of outer rock core tube, the outer rock core tube lower end links together with screw thread and interior core tube, core tube assembly is housed in the upper end of core tube and is connected to the screw mandrel governor motion, on the adjustment screw mandrel, following distance, the length that replaces former river 8-3 cylinder coring tool adapter sleeve, can go into the well when getting core at coring tool like this, can the adapter sleeve way be needn't change and core pawl assembly lower surface and gap, coring bit centralizer lower surface adjusted, very convenient during operation, and can guarantee that the gap has guaranteed that coring tool numerical value is constant between the 8-10 millimeter each other, the core timeliness is got in favourable raising drilling extracting core yield rate and increase.
Description of drawings:
Accompanying drawing is the utility model component structural schematic diagram.
Among the figure by 1, bearing box, 2, locking nut, 3, outer rock core tube, 4, interior core tube, 5, top connection forms.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
Among the figure, top connection 5 has the duct in the pin thread, following bearing box 1 with screwed connection, in the suspension assembly system of top connection upper end, there is a screw mandrel governor motion (figure draws) to be used for adjusting the axial distance of interior core tube 4, core tube core pawl assembly lower surface and coring bit are set upright gap width between the lower surface between the 8-10 millimeter in guaranteeing, thereby core tube length degree is increased, bearing box 1 be different-diameter arranged inside and outside one and the internal channel pipe, the inner tip of bearing box 1 is funnel-form, in, hypomere is the straight channel of different-diameter, greatly, there is bell mouth shape the minor diameter position, link to each other with the locking nut 2 that has box during use, on the screw thread of locking nut lower end, connecting outer rock core tube 3, outer rock core tube 3 has pin thread and is connected with interior core tube 4, and is fastening by locking nut 2 between described outer rock core tube 3 and the bearing box.
The axial distance of core tube 4 relies on the screw mandrel governor motion in the hanger assembly system that is located at this core tube upper end to regulate in described, thereby reaches the gap width requirement, guarantees that the length of core tube is taken out core smoothly.
Claims (2)
1, a kind of middle tube coring tool of getting core length of regulating, form by the interior core tube (4) that top connection (5) connects, it is characterized in that: between described top connection and the interior core tube, the circular locking nut (2) that has box by two ends is connecting bearing box (1) and outer rock core tube (3).
2, a kind of middle tube coring tool of getting core length of regulating according to claim 1, it is characterized in that: the screw mandrel governor motion that the axial distance of core tube (4) relies in this core tube upper end hanger assembly system in described is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093555 CN200961458Y (en) | 2006-10-01 | 2006-10-01 | Middle cylinder core-picking tool capable of adjusting core-length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093555 CN200961458Y (en) | 2006-10-01 | 2006-10-01 | Middle cylinder core-picking tool capable of adjusting core-length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200961458Y true CN200961458Y (en) | 2007-10-17 |
Family
ID=38797968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620093555 Expired - Fee Related CN200961458Y (en) | 2006-10-01 | 2006-10-01 | Middle cylinder core-picking tool capable of adjusting core-length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200961458Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060961A (en) * | 2014-06-20 | 2014-09-24 | 中国地质大学（武汉） | Wire line coring full-pack deviation control combined drilling tool |
-
2006
- 2006-10-01 CN CN 200620093555 patent/CN200961458Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060961A (en) * | 2014-06-20 | 2014-09-24 | 中国地质大学（武汉） | Wire line coring full-pack deviation control combined drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071017 Termination date: 20091102 |