CN203905849U - Self-disassembling floating seal type double-wall drill pipe - Google Patents

Self-disassembling floating seal type double-wall drill pipe Download PDF

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Publication number
CN203905849U
CN203905849U CN201420344687.6U CN201420344687U CN203905849U CN 203905849 U CN203905849 U CN 203905849U CN 201420344687 U CN201420344687 U CN 201420344687U CN 203905849 U CN203905849 U CN 203905849U
Authority
CN
China
Prior art keywords
pipe assembly
self
drill pipe
assembly
wall
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
CN201420344687.6U
Other languages
Chinese (zh)
Inventor
朱玉雷
文科
于强
李璐
张亮
孙政
吕继东
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.)
Victory Point Co Of Petroleum Works Geophysics Co Ltd Of China Petrochemical Industry
Original Assignee
Victory Point Co Of Petroleum Works Geophysics Co Ltd Of China Petrochemical Industry
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 Victory Point Co Of Petroleum Works Geophysics Co Ltd Of China Petrochemical Industry filed Critical Victory Point Co Of Petroleum Works Geophysics Co Ltd Of China Petrochemical Industry
Priority to CN201420344687.6U priority Critical patent/CN203905849U/en
Application granted granted Critical
Publication of CN203905849U publication Critical patent/CN203905849U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a self-disassembling floating seal type double-wall drill pipe. The drill pipe comprises an inner pipe assembly and an outer pipe assembly, wherein the inner pipe assembly is sleeved with the outer pipe assembly, and an annular space gap is formed between the inner pipe assembly and the outer pipe assembly; the upper end of the outer wall of the inner pipe assembly and the upper end of the inner wall of the outer pipe assembly are connected integrally through an inner and outer pipe connecting block; the lower end of the outer wall of the inner pipe assembly and the lower end of the inner wall of the outer pipe assembly are connected in a floating manner through a centralizing block; the outer pipe assembly comprises an outer pipe body as well as an outer upper joint and an inner upper joint which are connected with two ends of the outer pipe body respectively; the inner pipe assembly comprises an inner pipe body as well as an outer lower joint and an inner lower joint which are connected with two ends of the inner pipe body respectively; the inner and outer pipe connecting block is welded between the outer upper joint and the inner upper joint; the centralizing block is arranged between the outer lower joint and the inner lower joint. According to the drill pipe, automatic and rapid disassembly and flexible and effective sealing of the drill pipe are realized.

Description

A kind of self-unloading floating sealed double-wall drill pipe
Technical field
The utility model relates to drilling rod, specifically a kind of self-unloading floating sealed double-wall drill pipe.
Background technology
At present in counterflush drilling process, the handling difficulty of double-wall drill pipe compared with high, labour intensity is large, careless manipulation very easily causes the damage of drilling rod, and has a strong impact on efficiency of construction.
Summary of the invention
The purpose of this utility model is to provide a kind of self-unloading floating sealed double-wall drill pipe, has realized the automatic quick dismounting of drilling rod and drilling rod sealing flexibly and effectively, has solved preferably ubiquitous drilling tool problem in counterflush drilling.
In order to reach above-mentioned purpose, the utility model has adopted following technical scheme, a kind of self-unloading floating sealed double-wall drill pipe, comprise inner tube assembly and outer pipe assembly, described inner tube assembly is enclosed in outer pipe assembly inside, and there is annular clearance between inner tube assembly and outer pipe assembly, between described inner tube assembly outer wall upper-end part of driving and outer pipe assembly inwall upper-end part of driving, link into an integrated entity by inner and outer pipes contiguous block, between described inner tube assembly outer wall lower end part and outer pipe assembly inwall lower end part, be connected by wiper block is floating type.
Described outer pipe assembly comprises outer tube body and is connected to the outer top connection at outer tube body two ends, interior top connection; Described inner tube assembly comprises interior tube body and is connected to the outer lower contact at interior tube body two ends, interior lower contact.
Described inner and outer pipes contiguous block is welded between outer top connection, interior top connection.
Described wiper block is arranged between outer lower contact, interior lower contact.
Described outside upper upper end of joint outside is also connected with shackle card key.
Seal groove is offered in outside, described interior lower contact lower end, and sealing ring is set in seal groove.
Compared to prior art, the utlity model has following beneficial effect:
The utility model has been realized the automatic quick dismounting of drilling rod and drilling rod sealing flexibly and effectively; both protected drilling rod; reduce operation easier and labour intensity, ensured the sealing problem of drilling rod again flexible and efficiently, solved preferably ubiquitous drilling rod deficiency in counterflush drilling.Be applicable to the shallow bore hole operation taking air and liquid as the clean-out machine of circulatory mediator.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of self-unloading floating sealed double-wall drill pipe of the present utility model.
In figure: 1, shackle card key; 2, outer top connection; 3, interior top connection; 4, inner and outer pipes contiguous block; 5, interior tube body; 6, outer tube body; 7, outer lower contact; 8, wiper block; 9, interior lower contact; 10, sealing ring.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the utility model to be limited.
As shown in Figure 1, a kind of self-unloading floating sealed double-wall drill pipe, two symmetrical shackle card keys 1 are embedded in outer top connection 2, and outer top connection 2 and the interior top connection 3 of drilling rod are welded and fixed by inner and outer pipes contiguous block 4, and inner and outer pipes strong bonded is got up.Interior tube body 5 and outer tube body 6 are connected in interior top connection 3 and outer top connection 2 by screw thread.Outer lower contact 7 and interior lower contact 9 are also threaded connection respectively on outer tube body 6 and interior tube body 5.In interior lower contact 9, be inlaid with wiper block 8, it and outer lower contact 7 maintain certain gap.Sealing ring 10 is arranged on interior lower contact bottom.
When fixing drilling rod lower end, shackle cutting ferrule slides to shackle card key 1, and drill power head reverses, and can realize the fast shackle of drilling rod.And between interior lower contact 9 and outer lower contact 7, maintain certain gap, and so both played centralizing function, can allow again interior lower contact 9 have certain floating space.In the time being connected with another root drilling rod, can guarantee that interior lower contact 9 is plugged in the interior top connection 3 of another root drilling rod smoothly, like this, on the one hand, drilling rod can be not damaged because of assembling eccentricity issues, not only protected drilling rod but also reduced operation easier; On the other hand, in drilling process, sealing ring 10 can float with interior lower contact 9, can not make because inner and outer pipes is eccentric seal failure.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.

Claims (6)

1. a self-unloading floating sealed double-wall drill pipe, it is characterized in that, comprise inner tube assembly and outer pipe assembly, described inner tube assembly is enclosed in outer pipe assembly inside, and there is annular clearance between inner tube assembly and outer pipe assembly, between described inner tube assembly outer wall upper-end part of driving and outer pipe assembly inwall upper-end part of driving, link into an integrated entity by inner and outer pipes contiguous block, between described inner tube assembly outer wall lower end part and outer pipe assembly inwall lower end part, be connected by wiper block is floating type.
2. a kind of self-unloading floating sealed double-wall drill pipe according to claim 1, is characterized in that, described outer pipe assembly comprises outer tube body and is connected to the outer top connection at outer tube body two ends, interior top connection; Described inner tube assembly comprises interior tube body and is connected to the outer lower contact at interior tube body two ends, interior lower contact.
3. a kind of self-unloading floating sealed double-wall drill pipe according to claim 2, is characterized in that, described inner and outer pipes contiguous block is welded between outer top connection, interior top connection.
4. a kind of self-unloading floating sealed double-wall drill pipe according to claim 2, is characterized in that, described wiper block is arranged between outer lower contact, interior lower contact.
5. a kind of self-unloading floating sealed double-wall drill pipe according to claim 2, is characterized in that, described outside upper upper end of joint outside is also connected with shackle card key.
6. a kind of self-unloading floating sealed double-wall drill pipe according to claim 2, is characterized in that, seal groove is offered in outside, described interior lower contact lower end, and sealing ring is set in seal groove.
CN201420344687.6U 2014-06-26 2014-06-26 Self-disassembling floating seal type double-wall drill pipe Expired - Fee Related CN203905849U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420344687.6U CN203905849U (en) 2014-06-26 2014-06-26 Self-disassembling floating seal type double-wall drill pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420344687.6U CN203905849U (en) 2014-06-26 2014-06-26 Self-disassembling floating seal type double-wall drill pipe

Publications (1)

Publication Number Publication Date
CN203905849U true CN203905849U (en) 2014-10-29

Family

ID=51780138

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420344687.6U Expired - Fee Related CN203905849U (en) 2014-06-26 2014-06-26 Self-disassembling floating seal type double-wall drill pipe

Country Status (1)

Country Link
CN (1) CN203905849U (en)

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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

Granted publication date: 20141029

Termination date: 20170626

CF01 Termination of patent right due to non-payment of annual fee