CN104453760A - Pressure-maintaining coring tool - Google Patents
Pressure-maintaining coring tool Download PDFInfo
- Publication number
- CN104453760A CN104453760A CN201410798532.4A CN201410798532A CN104453760A CN 104453760 A CN104453760 A CN 104453760A CN 201410798532 A CN201410798532 A CN 201410798532A CN 104453760 A CN104453760 A CN 104453760A
- Authority
- CN
- China
- Prior art keywords
- assembly
- connecting rod
- sealing plate
- core
- core grabber
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
Abstract
The invention discloses a pressure-maintaining coring tool. The pressure-maintaining coring tool comprises an upper connector, a connecting rod, an outer barrel assembly, a rotary assembly, an inner barrel assembly, a core catcher assembly and a drill bit, wherein one end of the connecting rod is connected with the upper connector, the other end of the connecting rod is connected with the rotary assembly, a protrusion I is arranged on the outer wall of the connecting rod, one end of the outer barrel assembly is connected between the upper connector of the connecting rod and the protrusion I in a sleeved mode, and the drill bit is arranged at the other end of the outer barrel assembly. For conveniently describing the arrangement, it is assumed that the upper connector is at the upper portion, and the drill bit is at the lower portion, the inner barrel assembly is arranged under the rotary assembly, the core catcher assembly is arranged under the inner barrel assembly, the outer side of the lateral wall of the core catcher assembly is connected with a sealing assembly in a sleeved mode, and the sealing assembly seals the inner barrel space when a drilling tool is lifted upwards. The pressure-maintaining coring tool is simple in structure and convenient to use. Only a sealing plate is repaired independently in the repairing process, and the repairing cost is largely saved.
Description
Technical field
The invention belongs to drilling and coring delivery apparatus field, be specifically related to a kind of coring drilling with keep up pressure instrument.
Background technology
In prior art, be used for the analysis of oily in geology and research to obtain core from down-hole, all can in certain layer position coring tool core drilling.Rock core is in trip-out process, and due to the reduction of pressure, the easily volatilization or out excessive such as the oil gas water in stratum, simultaneously due to the release of pressure, the certain physical characteristics of rock core also can change thereupon.Normal core-extracting tool can not collect the gas-bearing formation data in rock core effectively, and therefore its rock core taken out is comparatively large with stratum difference in oil gas physical property, produces have a strong impact on the decision-making of exploration and development.In prior art, as the patent No. is: one section of patent of CN201120358385, by arranging ball valve at drill bit 7 place to keep pressure when pulling out of hole, although the object of pressurize can be reached, but ball valve overall structure is comparatively complicated, when keeping in repair, comparatively inconvenience even cannot be keeped in repair.
Summary of the invention
It is simple, easy to use that the object of the invention is to provide a kind of structure, can effectively realize keep pull out of hole time pressure and be convenient to keep in repair coring drilling with keep up pressure instrument.
For realizing above-mentioned technical purpose, use following technical scheme:
A kind of coring drilling with keep up pressure instrument, comprise top connection, connecting rod, outer barrel component, rotation assembly, interior cartridge module, core grabber assembly and drill bit, wherein connecting rod one end is connected with top connection, the other end is connected with rotation assembly, connecting rod outer wall is provided with protruding one, outer barrel component one end is socketed between the top connection of connecting rod and protruding one, and drill bit is arranged at the outer barrel component other end; For aspect describes, suppose that top connection one side is top, drill bit one side is below; Interior cartridge module is arranged at and rotates below assembly, and core grabber assembly is arranged at below interior cartridge module, and core grabber assembly side-wall outer side is socketed with black box, black box sealing inner core space when drilling tool is carried.
For making the present invention more be suitable for practicality, make further improvements below:
Described black box comprises annular seal space, chamber wall, sealing plate and seal receptacle, wall upper end, chamber is socketed on core grabber assembly side-wall outer side, lower end is provided with perforate, seal receptacle is arranged on bottom annular seal space, sealing plate is at least two pieces and respectively by hinge on seal receptacle, the spacing of sealing plate when opening between each plate is greater than core grabber assembly sidewall outside diameter, sealing plate when closed each other and and seal receptacle between be in sealing state.
Be provided with pressure ring above described sealing plate, in pressure ring, circular diameter is greater than core grabber assembly sidewall outside diameter and the diameter be less than when sealing plate closes.
Described core grabber assembly sidewall arranged outside has protruding two, and protruding two are stuck in annular seal space.Core grabber assembly cannot be separated with black box.
Described chamber wall 8 and core grabber assembly side-wall outer side socket place are provided with rubber seal.
Described connecting rod is six square bars.
Beneficial effect of the present invention is: structure of the present invention is simple, easy to use, after core-drilling, on carry drilling tool, connecting rod is up, drive core grabber composite member up, now sealing plate is not owing to having core grabber composite member to its supporting role, under the weight effect of pressure ring and sealing plate itself, make sealing plate closed, sealing plate separately assembly and and seal receptacle between seal, thus realize the sealing of inner core inner space.Only sealing plate need be keeped in repair separately during maintenance, substantial saving in maintenance cost.
Accompanying drawing explanation
Fig. 1 is the present invention's structural representation when creeping into.
Fig. 2 is the present invention's structural representation when pulling out of hole.
Fig. 3 is the part A enlarged diagram of Fig. 1.
Fig. 4 is the part B enlarged diagram of Fig. 2.
Reference numeral: 1-top connection, 2-connecting rod, 3-rotates assembly, 4-black box, 5-outer barrel component, 6-core grabber assembly, 7-drill bit, 8-chamber wall, 9-seal receptacle, 10-sealing plate, 11-pressure ring, cartridge module in 12-projection two, 13-projection one, 14-, 15-bearing pin, 16-annular seal space.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of coring drilling with keep up pressure instrument, comprise top connection 1, connecting rod 22, outer barrel component 5, rotate assembly 3, interior cartridge module 14, core grabber assembly 6 and drill bit 7, wherein connecting rod 2 one end is connected with top connection 1, the other end is connected with rotation assembly 3, connecting rod 2 outer wall is provided with protruding 1, outer barrel component 5 one end is socketed between the top connection 1 of connecting rod 2 and protruding 1, and drill bit 7 is arranged at outer barrel component 5 other end; For aspect describes, suppose that top connection 1 one side is top, drill bit 7 one side is below; Interior cartridge module 14 is arranged at and rotates below assembly 3, and core grabber assembly 6 is arranged at below interior cartridge module 14, and core grabber assembly 6 side-wall outer side is socketed with black box 4, and when drilling tool is carried, black box 4 seals inner core space.Described black box 4 comprises annular seal space 16, chamber wall 8, sealing plate 10 and seal receptacle 9, chamber wall 8 upper end is socketed on core grabber assembly 6 side-wall outer side, lower end is provided with perforate, seal receptacle 9 is arranged on bottom annular seal space 16, sealing plate 10 is at least two pieces and is hinged on seal receptacle 9 respectively by bearing pin 15, the spacing of sealing plate 10 when opening between each plate is greater than core grabber assembly 6 side-wall outer side diameter, sealing plate 10 when closed each other and and seal receptacle 9 between be in sealing state.Be provided with pressure ring 11 above described sealing plate 10, in pressure ring 11, circular diameter is greater than core grabber assembly 6 side-wall outer side diameter and is less than diameter when sealing plate 10 closes.Described core grabber assembly 6 side-wall outer side is provided with protruding 2 12, and protruding 2 12 are stuck in annular seal space 16.Core grabber assembly 6 cannot be separated with black box 4.Described chamber wall 8 and core grabber assembly 6 side-wall outer side socket place are provided with rubber seal.Described connecting rod 2 is six square bars.
In core-drilling process, sealing plate 10 is in open mode, and the opening contacts of core grabber assembly 6 and chamber wall 8 lower end also gives sealing plate 10 support force, makes core grabber assembly 6 normally can carry out work.After core-drilling, on carry drilling tool, connecting rod 2 is up, drive core grabber composite member up, now sealing plate 10 is not owing to having core grabber composite member to its supporting role, under the weight effect of pressure ring 11 and sealing plate 10 itself, sealing plate 10 is closed, sealing plate 10 separately assembly and and seal receptacle 9 between seal, thus realize the sealing of inner core inner space.
Claims (6)
1. a coring drilling with keep up pressure instrument, comprise top connection (1), connecting rod (22), outer barrel component (5), rotate assembly (3), interior cartridge module (14), core grabber assembly (6) and drill bit (7), wherein connecting rod (2) one end is connected with top connection (1), the other end is connected with rotation assembly (3), connecting rod (2) outer wall is provided with protruding one (13), outer barrel component (5) one end is socketed between the top connection (1) of connecting rod (2) and protruding one (13), drill bit (7) is arranged at outer barrel component (5) other end, interior cartridge module (14) is arranged at and rotates assembly (3) below, core grabber assembly (6) is arranged at interior cartridge module (14) below, core grabber assembly (6) side-wall outer side is socketed with black box (4), black box (4) sealing inner core space when drilling tool is carried.
2. coring drilling with keep up pressure instrument as claimed in claim 1, it is characterized in that: described black box (4) comprises annular seal space (16), chamber wall (8), sealing plate (10) and seal receptacle (9), chamber wall (8) upper end is socketed on core grabber assembly (6) side-wall outer side, lower end is provided with perforate, seal receptacle (9) is arranged on annular seal space (16) bottom, sealing plate (10) is at least two pieces and is hinged on seal receptacle (9) respectively by bearing pin (15), sealing plate (10) spacing when opening between each plate is greater than core grabber assembly (6) side-wall outer side diameter, sealing plate (10) when closed each other and and seal receptacle (9) between be in sealing state.
3. coring drilling with keep up pressure instrument as claimed in claim 2, it is characterized in that: described sealing plate (10) top is provided with pressure ring (11), pressure ring (11) interior circular diameter is greater than core grabber assembly (6) side-wall outer side diameter and is less than diameter when sealing plate (10) closes.
4. coring drilling with keep up pressure instrument as described in Claims 2 or 3, is characterized in that: described core grabber assembly (6) side-wall outer side is provided with protruding two (12), and protruding two (12) are stuck in annular seal space (16).
5. coring drilling with keep up pressure instrument as described in Claims 2 or 3, is characterized in that: described chamber wall (8) and core grabber assembly (6) side-wall outer side socket place are provided with rubber seal.
6. coring drilling with keep up pressure instrument as claimed in claim 1, is characterized in that: described connecting rod (2) is six square bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798532.4A CN104453760A (en) | 2014-12-18 | 2014-12-18 | Pressure-maintaining coring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798532.4A CN104453760A (en) | 2014-12-18 | 2014-12-18 | Pressure-maintaining coring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104453760A true CN104453760A (en) | 2015-03-25 |
Family
ID=52900436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410798532.4A Pending CN104453760A (en) | 2014-12-18 | 2014-12-18 | Pressure-maintaining coring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104453760A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761513A (en) * | 2016-12-15 | 2017-05-31 | 中国地质科学院勘探技术研究所 | A kind of rope salvaging type coring drilling with keep up pressure drilling tool |
| CN109505993A (en) * | 2018-11-08 | 2019-03-22 | 深圳大学 | The core barrel sealing structure of seal pressure can be increased |
-
2014
- 2014-12-18 CN CN201410798532.4A patent/CN104453760A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761513A (en) * | 2016-12-15 | 2017-05-31 | 中国地质科学院勘探技术研究所 | A kind of rope salvaging type coring drilling with keep up pressure drilling tool |
| CN106761513B (en) * | 2016-12-15 | 2019-04-12 | 中国地质科学院勘探技术研究所 | A kind of rope salvaging type coring drilling with keep up pressure drilling tool |
| CN109505993A (en) * | 2018-11-08 | 2019-03-22 | 深圳大学 | The core barrel sealing structure of seal pressure can be increased |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |