CN206668159U - The geological prospecting single rotary double core barrel cored for negative pressure - Google Patents

The geological prospecting single rotary double core barrel cored for negative pressure Download PDF

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Publication number
CN206668159U
CN206668159U CN201720383274.2U CN201720383274U CN206668159U CN 206668159 U CN206668159 U CN 206668159U CN 201720383274 U CN201720383274 U CN 201720383274U CN 206668159 U CN206668159 U CN 206668159U
Authority
CN
China
Prior art keywords
assembly
drilling tool
tube
core barrel
cored
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
Application number
CN201720383274.2U
Other languages
Chinese (zh)
Inventor
王荣耀
臧龙
张伟
高宇清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changsha Institute of Mining Research Co Ltd
Original Assignee
Changsha Institute of Mining Research Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changsha Institute of Mining Research Co Ltd filed Critical Changsha Institute of Mining Research Co Ltd
Priority to CN201720383274.2U priority Critical patent/CN206668159U/en
Application granted granted Critical
Publication of CN206668159U publication Critical patent/CN206668159U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of geological prospecting single rotary double core barrel cored for negative pressure, and it includes the outer assembly of assembly, drilling tool in drilling tool and is arranged at the bearing in drilling tool between assembly and the outer assembly of drilling tool;Assembly includes basket and core barrel head in drilling tool, and the upper end of assembly is connected with the sealing shroud for jointed rod in drilling tool, and assembly is connected by the sealing shroud with the inner tube assembly of supporting drilling rod in drilling tool;The outer assembly of drilling tool includes outer tube and outer tube joint, and the upper end of outer tube is connected with the outer pipe assembly of supporting drilling rod, lower end is connected with drill bit.Connected in use by outer tube joint, sealing shroud with supporting drilling rod, realize the connection and conducting of drilling rod and drilling tool, due to gap between bearing ball be present, realize drilling rod and drilling tool passage is top-down unobstructed, the outer assembly of drilling tool drives bit under the driving of unit head, and assembly keeps substantially static because rock core frictional force acts in drilling tool.

Description

The geological prospecting single rotary double core barrel cored for negative pressure
Technical field
A kind of drilling tool is the utility model is related to, more particularly to a kind of geological prospecting single-action twin-pipes cored for negative pressure bore Tool.
Background technology
The behaviour that cores is carried out to bottom sediment and loose, broken formation using core drilling rod and the drilling tool of existing seabed rig When making, because the seawater of core drill inner sealing cavity can not be discharged in time, and bottom sediment and loose, broken formation are in rock The support force for promoting rock core into basket that heart bottom of the tube provides is very weak so that rock core, which enters in core drill, to be become to be stranded very much Difficulty, cause the rate of coring very low.Increase bottom sediment sampling below atmospheric pressure drilling rod and drilling tool, the heavy of seabed rig can be increased substantially Product thing is cored rate.
Utility model content
The purpose of this utility model is to provide a kind of geological prospecting single rotary double core barrel cored for negative pressure, and supporting Negative pressure core drilling rod use, solves the problems, such as seabed rig to deposit with loosely, broken formation rate of coring it is low.
This geological prospecting single rotary double core barrel cored for negative pressure provided by the utility model, it includes total in drilling tool Assembly and the bearing in drilling tool outside assembly and drilling tool between assembly is arranged at outside into, drilling tool;In drilling tool assembly include basket and Core barrel head, the upper end of assembly is connected with the sealing shroud for jointed rod in drilling tool, and assembly passes through the sealing shroud in drilling tool It is connected with the inner tube assembly of supporting drilling rod;The outer assembly of drilling tool includes outer tube and outer tube joint, the upper end of outer tube and supporting drilling rod Outer pipe assembly is connected, lower end is connected with drill bit.
The inwall of basket upper end end is provided with internal thread.
The core barrel head is T connector, and the outer wall on its head is provided with the screw thread for being used for being connected with basket, its bar portion Outer end be provided with and be used to the annular groove of the sealing shroud be installed, the middle part of its bar portion is provided with the step for being used for limiting the bearing.
The inwall of the sealing shroud is provided with the projection for being matched with annular groove.
The inwall of the outer tube upper end is provided with internal thread.
The outer tube joint is cylindrical type, and its outer wall is provided with the screw thread for being used for being connected with outer tube, its inwall be provided with for The connected internal thread of drilling rod.
As the alternative solution of threaded connection, the basket and the core barrel head can be welded as a whole.
As the alternative solution of threaded connection, the outer tube can be welded as a whole with outer tube joint.
The utility model is connected by outer tube joint, sealing shroud with supporting drilling rod in use, realize drilling rod and The connection and conducting of drilling tool, due to gap between bearing ball be present, realize drilling rod and drilling tool passage be top-down unobstructed, The outer assembly of drilling tool drives bit under the driving of unit head, and assembly keeps basic because rock core frictional force acts in drilling tool It is static.During coring, flushing water is by the annular space of drilling rod, the annular space row between drill bit and basket Go out, realize cooling drill bit and flushing detritus.Water in basket then discharges rock by negative pressure mode via the inner passage of drilling rod Heart pipe, the resistance that rock core enters basket is effectively reduced, so as to improve the rate of coring.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of one preferred embodiment of this utility model.
Fig. 2 is the connection diagram of drilling tool and supporting drilling rod.
Illustrate sequence number:
It is 1-drilling tool, 2-sealing shroud, 3-radial thrust bearing, 4-drilling rod, assembly in 11-drilling tool, total outside 12-drilling tool Into, 111-basket, 112-core barrel head, 121-outer tube, 122-outer tube joint, A-inner passage, B-outside it is logical Road.
Embodiment
As shown in figure 1, this geological prospecting single rotary double core barrel cored for negative pressure that the present embodiment provides, it includes Assembly 11 and the outer assembly 12 of drilling tool in drilling tool;Assembly 11 includes basket 111 and core barrel head 112 in drilling tool, basket Upper end is threadedly coupled with core barrel head, and the other end of core barrel head is connected by the inner tube pin end of sealing shroud 2 and drilling rod 4 Connect;The outer assembly 12 of drilling tool includes outer tube 121 and outer tube joint 122, and the lower end of outer tube is connected with drill bit, upper end and outer tube joint spiral shell Line connects, and the other end of outer tube joint is connected with the outer tube pin end of drilling rod.
Core barrel head 112 is T connector, and the outer wall on its head is provided with the screw thread for being used for being connected with basket, its bar portion Outer end be provided with and be used to the annular groove of sealing shroud be installed, the middle part of its bar portion is provided with the step for being used for limiting radial thrust bearing; Outer tube joint is cylindrical type, and its outer wall is provided with the screw thread for being used for being connected with outer tube, and its inwall, which is provided with, to be used for and the outer tube of drilling rod public affairs The connected screw thread of joint.
As shown in Fig. 2 drilling tool is connected with its core barrel head fitted seal set with the inner tube pin end of inner tube assembly, with it Outer tube joint is connected with the outer tube pin end of outer pipe assembly.After drilling rod is connected with supporting drilling tool, sealing shroud and inner tube pin end Connection, realizes the connection and conducting of drilling rod inner tube assembly inner passage and basket upper space.By outer tube pin end and outside The connection of pipe joint, the connection of sealing shroud and inner tube pin end, realize drilling rod inner passage and drilling tool inner passage connection and Conducting, also due to gap between bearing ball be present, realizes drilling rod external channel and drilling tool external channel is top-down It is unobstructed.The outer assembly of drilling tool drives bit under the driving of unit head, and assembly is protected because rock core frictional force acts in drilling tool Hold substantially static.
The present embodiment is connected by outer tube joint, sealing shroud with supporting drilling rod in use, realizes drilling rod and brill The connection and conducting of tool, due to gap between bearing ball be present, realize drilling rod and drilling tool passage is top-down unobstructed, bore The outer assembly of tool drives bit by drilling rod under the driving of unit head, and assembly is protected because rock core frictional force acts in drilling tool Hold substantially static.During coring, flushing water is outer between drill bit and basket by the external channel B of drilling rod Portion's passage discharge, realizes cooling drill bit and flushing detritus.Water in basket is then discharged by negative pressure mode via inner passage A Basket, the resistance that rock core enters basket is effectively reduced, so as to improve the rate of coring.
As an alternative, basket in the present embodiment can also be welded as a whole with core barrel head, can also incited somebody to action Outer tube is welded as a whole with outer tube joint.

Claims (8)

  1. A kind of 1. geological prospecting single rotary double core barrel cored for negative pressure, it is characterised in that:It includes assembly, drilling tool in drilling tool Outer assembly and the bearing being arranged between the outer assembly of assembly and drilling tool in drilling tool;Assembly includes basket in drilling tool and basket connects Head, the upper end of assembly is connected with the sealing shroud for jointed rod in drilling tool, and assembly passes through the sealing shroud and supporting brill in drilling tool The inner tube assembly of bar is connected;The outer assembly of drilling tool includes outer tube and outer tube joint, the upper end of outer tube and the outer pipe assembly of supporting drilling rod It is connected, lower end is connected with drill bit.
  2. 2. the geological prospecting single rotary double core barrel according to claim 1 cored for negative pressure, it is characterised in that:The rock The inwall of heart pipe upper end end is provided with internal thread.
  3. 3. the geological prospecting single rotary double core barrel according to claim 2 cored for negative pressure, it is characterised in that:The rock Heart pipe joint is T connector, and the outer wall on its head is provided with the screw thread for being used for being connected with basket, and the outer end of its bar portion, which is provided with, to be used for The annular groove of the sealing shroud is installed, the middle part of its bar portion is provided with the step for being used for limiting the bearing.
  4. 4. the geological prospecting single rotary double core barrel according to claim 3 cored for negative pressure, it is characterised in that:It is described close The inwall of big envelope is provided with the projection for being matched with annular groove.
  5. 5. the geological prospecting single rotary double core barrel according to claim 1 cored for negative pressure, it is characterised in that:It is described outer The inwall of pipe upper end is provided with internal thread.
  6. 6. the geological prospecting single rotary double core barrel according to claim 5 cored for negative pressure, it is characterised in that:It is described outer Pipe joint is cylindrical type, and its outer wall is provided with the screw thread for being used for being connected with outer tube, and its inwall is provided with the interior spiral shell for being used for being connected with drilling rod Line.
  7. 7. the geological prospecting single rotary double core barrel according to claim 1 cored for negative pressure, it is characterised in that:The rock Heart pipe is welded as a whole with the core barrel head.
  8. 8. the geological prospecting single rotary double core barrel according to claim 1 cored for negative pressure, it is characterised in that:It is described outer Pipe is welded as a whole with outer tube joint.
CN201720383274.2U 2017-04-13 2017-04-13 The geological prospecting single rotary double core barrel cored for negative pressure Expired - Fee Related CN206668159U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720383274.2U CN206668159U (en) 2017-04-13 2017-04-13 The geological prospecting single rotary double core barrel cored for negative pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720383274.2U CN206668159U (en) 2017-04-13 2017-04-13 The geological prospecting single rotary double core barrel cored for negative pressure

Publications (1)

Publication Number Publication Date
CN206668159U true CN206668159U (en) 2017-11-24

Family

ID=60381484

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720383274.2U Expired - Fee Related CN206668159U (en) 2017-04-13 2017-04-13 The geological prospecting single rotary double core barrel cored for negative pressure

Country Status (1)

Country Link
CN (1) CN206668159U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112324334A (en) * 2020-10-30 2021-02-05 中国地质大学(武汉) Sealed pressure-feed type horizontal directional drilling engineering geological exploration continuous coring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112324334A (en) * 2020-10-30 2021-02-05 中国地质大学(武汉) Sealed pressure-feed type horizontal directional drilling engineering geological exploration continuous coring device

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GR01 Patent grant
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: 20171124

Termination date: 20200413