CN206801487U - A kind of telescopic two-tube lifting sub - Google Patents
A kind of telescopic two-tube lifting sub Download PDFInfo
- Publication number
- CN206801487U CN206801487U CN201720634382.2U CN201720634382U CN206801487U CN 206801487 U CN206801487 U CN 206801487U CN 201720634382 U CN201720634382 U CN 201720634382U CN 206801487 U CN206801487 U CN 206801487U
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- China
- Prior art keywords
- tube
- outer tube
- pipe nipple
- inner tube
- drilling tool
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Abstract
The utility model discloses a kind of telescopic two-tube lifting sub, including lifting ring, bearing cap, outer tube joint, telescoping inner pipe nipple, thrust bearing, bearing holder (housing, cover) and inner tube Support tray, described outer tube joint is coaxially arranged with the telescoping inner pipe nipple outside described telescoping inner pipe nipple.The utility model can make outer tube, inner tube by the connection between telescoping inner pipe nipple and outer tube joint while put, and save non-cutting time, reduce construction risk, improve efficiency；Inner tube Support tray center is provided with telescoping inner pipe nipple, when putting drilling tool, existing length difference is adjusted by the scalability between telescoping inner pipe nipple and outer tube joint between inner tube and outer tube, while the scalability of lifting sub ensure that inner tube is connected with outer tube and is smoothed out with unloading process；On outer tube joint top along thrust bearing is provided between inner side and bearing holder (housing, cover), ensure that inner tube and outer tube connection and unloading process in rotated between inner tube and outer tube it is relatively independent.
Description
Technical field
A kind of construction aid in drilling technology field is the utility model is related to, more particularly to a kind of telescopic two-tube
Lifting sub.
Background technology
Lifting sub is the very important aid in petroleum drilling technology field, and it is a short drill pipe, is connected during use
It is connected on drill collar to carry out putting drill collar operation.Having special specification in oil and gas industry, (SY/T 5699-2010 are carried
Rise pipe nipple) define specification, technical requirements and the test method of lifting sub and toe the line.
In rotating suspension formula independence inner tube counterflush drilling technique, part drilling tool structure is by relatively independent central tube
The binary channels drilling tool structure of (inner tube) and drilling rod (outer tube) composition, is carried in going down process, central tube (inner tube) and drilling rod (outer tube)
Individually put, so when central tube (inner tube) of drilling tool is put, whole drilling rod (outer tube) remains static in well,
Construction risk during drillng operation is added, meanwhile, the non-cutting time of drilling well is also increased, reduces operating efficiency.
The content of the invention
In order to solve above-mentioned the deficiencies in the prior art, it is short that the utility model provides a kind of telescopic two-tube lifting
Section, inner tube coupling part can both slide axially relative to outer tube joint, can also rotate, and can make outer tube, inner tube
Put simultaneously, form column, greatly save non-cutting time, reduce construction risk, improve efficiency.
The purpose of this utility model is achieved through the following technical solutions：
A kind of telescopic two-tube lifting sub, including lifting ring, bearing cap, outer tube joint, telescoping inner pipe nipple, thrust axis
Hold, bearing holder (housing, cover) and inner tube Support tray, described lifting ring are fixedly connected with described inner tube Support tray, described inner tube Support tray
Center offers through hole, and the through hole internal thread connects the telescoping inner pipe nipple；
The bearing holder (housing, cover) is installed outside telescoping inner pipe nipple below said inner tube Support tray, stretching below bearing holder (housing, cover)
Outside contracting inner tube pipe nipple, described outer tube joint, outer tube joint upper end inner side and axle are coaxially arranged with the telescoping inner pipe nipple
Described thrust bearing is installed, described bearing cap and inner tube Support tray cover the bearing holder (housing, cover) and outer tube joint between bearing sleeve
Upper end.
The top center of described bearing cap is formed with the through hole for accommodating inner tube Support tray lower end.
Described bearing cap is fixedly mounted on outer tube joint by jackscrew.
External screw thread is provided with the outer wall of described outer tube joint, for being connected with the outer tube of unit drilling tool.
External screw thread is provided with the outer wall of described telescoping inner pipe nipple, for being connected with the inner tube of unit drilling tool.
Relative to prior art, the beneficial effects of the utility model are：
(1) telescopic two-tube lifting sub of the present utility model passes through the connection between telescoping inner pipe nipple and outer tube joint
Outer tube, inner tube can be made while put, column is formed, greatly save non-cutting time, reduce construction risk, improve effect
Rate；
(2) the utility model is provided with telescoping inner pipe nipple in inner tube Support tray center, realizes between inner tube and outer tube
Relative telescopic, when putting drilling tool, existing length difference passes through telescoping inner pipe nipple and outer tube joint between inner tube and outer tube
Between scalability adjust, while to ensure that inner tube is connected with outer tube suitable with unloading process for the scalability of lifting sub
Profit is carried out；
(3) the utility model on outer tube joint top along being provided with thrust bearing between inner side and bearing holder (housing, cover), the thrust bearing
So that telescoping inner pipe nipple realizes the relative rotary motion between outer tube joint, the connection and dismounting of inner tube and outer tube ensure that
During rotated between inner tube and outer tube it is relatively independent.
Brief description of the drawings
Fig. 1 is the structural representation of telescopic two-tube lifting sub of the present utility model；
Fig. 2 is the structural representation of inner tube coupling part of the present utility model；
Fig. 3 is the connection status schematic diagram of unit drilling tool；
Fig. 4 is the disengaged position schematic diagram of unit drilling tool；
Fig. 5 is that unit drilling tool stands view.
Wherein：
1st, lifting ring；2nd, bearing cap；3rd, outer tube joint；4th, telescoping inner pipe nipple；5th, thrust bearing；6th, bearing holder (housing, cover)；
7th, inner tube Support tray；8th, unit drilling tool inner tube；9th, unit drilling tool outer tube；10th, drilling tool in well.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
, can referring to a kind of specific embodiment of telescopic two-tube lifting sub of the utility model shown in Fig. 1 and Fig. 2
To find out, it is short that telescopic two-tube lifting sub of the present utility model includes lifting ring 1, bearing cap 2, outer tube joint 3, telescoping inner
Section 4, thrust bearing 5, bearing holder (housing, cover) 6 and inner tube Support tray 7.
As shown in Fig. 2 described lifting ring 1, inner tube Support tray 7 and telescoping inner pipe nipple 4 constitute inner tube coupling part,
Described lifting ring 1 is welded on inner tube Support tray 7, and the described center of inner tube Support tray 7 offers through hole, passes through in the through hole
Telescoping inner pipe nipple 4 is threaded with, realizes the relative telescopic between inner tube and outer tube.
As shown in figure 1, the bearing holder (housing, cover) 6 is installed outside telescoping inner pipe nipple 4 below said inner tube Support tray 7,
Outside telescoping inner pipe nipple 4 below bearing holder (housing, cover) 6, described outer tube joint 3 is coaxially arranged with the telescoping inner pipe nipple 4, it is described
Described thrust bearing 5 is installed between bearing holder (housing, cover) 6, the thrust bearing 5 make it that telescoping inner is short on the inside of the upper end of outer tube joint 3
Section 4 realizes the relative rotary motion between outer tube joint 3.
The described upper end of outer tube joint 3 is provided with described bearing cap 2, the top outer of the bearing cap 2 it is inwardly projecting and
Middle hollow out, described inwardly projecting outer is arranged between described lifting ring 1 and bearing holder (housing, cover) 6, under described bearing cap 2
The barrel at end is connected with described outer tube joint 3 by jackscrew.
In wellbore construction, drilling tool is typically connected through a screw thread by the single drilling tool of more certain lengths and formed in well, well
Have it is more deep, drilling tool just have how long.This just has the very important process in operation --- the process for putting drilling tool, and drilling well
Essential back work in construction, the efficiency of this work directly affect the efficiency of whole wellbore construction, and relation drilling well
The construction safety of operation.
When putting drilling tool, connection unit drilling tool outer tube 9, telescoping inner pipe nipple 4 and unit drilling tool are responsible for by outer tube joint 3
Inner tube 8 is threadedly coupled, and length difference be present between unit drilling tool inner tube 8 and unit drilling tool outer tube 9, by telescoping inner pipe nipple 4 with
Scalability between outer tube joint 3 is adjusted.In unloading screw thread, unit drilling tool inner tube 8 is with unit drilling tool outer tube 9 by short
The thrust bearing 5 of section is realized and rotated against.
In the connection and unloading process of inner tube and outer tube, the scalability of lifting sub ensure that it is smoothed out, phase
Rotating part ensure that rotated between inner tube and outer tube it is relatively independent.
It is that drilling tool in well is dismantled into connection screw thread successively for a unit by strut length to put on and bore operation, often dismantles a list
It is proposed sequentially to stand on rig floor after member, until the process that drilling tool all proposes in well.
During whole wellbore construction, put brill and put on bore operation need and meanwhile alternately.Made below with putting on to bore
Exemplified by industry, several states that each unit drilling tool occurs in drilling process are described in detail referring to Fig. 3 to Fig. 5：
Fig. 3 show connection status：Inner tube is constituted by lifting ring 1, inner tube Support tray 7 and telescoping inner pipe nipple 4 to connect
Unit drilling tool is proposed drilling floor surface by socket part point, but is connected with drilling tool in well 10, the connection unit drilling tool inner tube of telescoping inner pipe nipple 3
8, and be sitting in by inner tube Support tray 7, outer tube joint 3 in well on drilling tool 10.
Fig. 4 show disengaged position：Drilling tool 10 is fixed on rig floor in the presence of fixture in well, unties unit drilling tool
With the threaded connection of drilling tool in well 10, departed from by lifting means unit drilling tool and drilling tool in well 10, unit drilling tool top
Unit drilling tool inner tube 8 is alignd with unit drilling tool outer tube 9, and the length of unit drilling tool base unit drilling tool inner tube 8 is outside unit drilling tool
Pipe 9.
Fig. 5 show the state of standing：Unit drilling tool lift-off well head is made the bottom of unit drilling tool stand in rig floor by lifting means
On, unit drilling tool base unit drilling tool inner tube 8 is alignd with unit drilling tool outer tube 9, passes through telescoping inner pipe nipple 4 at the top of unit drilling tool
Effect, unit drilling tool inner tube 8 exceeds unit drilling tool outer tube 9, entirely helps and lean against on derrick special purpose device, at this moment, lifting means
Separated with unit drilling tool, complete a sub-cell drilling tool and carry driller's work.
Telescopic two-tube lifting sub of the present utility model is simple in construction, workable, is used when putting drilling tool, with
It is deep under inner tube exemplified by 400 meters, reduces quiescent time of the drilling tool in well about 3 hours, when substantially reducing wellbore construction
Risk, on the other hand so that put the non-cutting time of drilling tool reduces 20% relative to when individually putting drilling tool, improves drilling well
Operating efficiency.
Exemplary description is done to the utility model above, it should explanation, do not departing from core of the present utility model
In the case of the heart, any simple deformation, modification or other skilled in the art can not spend creative work etc.
The scope of protection of the utility model is each fallen within replacing.
Claims (5)
1. a kind of telescopic two-tube lifting sub, including lifting ring (1), bearing cap (2), outer tube joint (3), telescoping inner pipe nipple
(4), thrust bearing (5), bearing holder (housing, cover) (6) and inner tube Support tray (7), it is characterised in that：Described lifting ring (1) with it is described interior
Pipe Support tray (7) is fixedly connected, and described inner tube Support tray (7) center offers through hole, is stretched described in through hole internal thread connection
Contracting inner tube pipe nipple (4)；
The bearing holder (housing, cover) (6) is installed outside the telescoping inner pipe nipple (4) of said inner tube Support tray (7) below；
In the telescoping inner pipe nipple (4) of bearing holder (housing, cover) (6) below outside, it is outer described in being coaxially arranged with the telescoping inner pipe nipple (4)
Pipe joint (3)；
Described thrust bearing (5) is installed on the inside of outer tube joint (3) upper end between bearing holder (housing, cover) (6)；
Described bearing cap (2) and inner tube Support tray (7) covers the upper end of the bearing holder (housing, cover) (6) and outer tube joint (3).
2. telescopic two-tube lifting sub according to claim 1, it is characterised in that：The top of described bearing cap (2)
It is centrally formed with accommodating the through hole of inner tube Support tray (7).
3. telescopic two-tube lifting sub according to claim 2, it is characterised in that：Described bearing cap (2) passes through top
Silk is fixedly mounted on outer tube joint (3).
4. the telescopic two-tube lifting sub according to any one of claim 1-3, it is characterised in that：Described external pipe connection
External screw thread is provided with the outer wall of head (3), for being connected with the outer tube of unit drilling tool.
5. telescopic two-tube lifting sub according to claim 4, it is characterised in that：Described telescoping inner pipe nipple (4)
Outer wall on be provided with external screw thread, for being connected with the inner tube of unit drilling tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720634382.2U CN206801487U (en) | 2017-06-02 | 2017-06-02 | A kind of telescopic two-tube lifting sub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720634382.2U CN206801487U (en) | 2017-06-02 | 2017-06-02 | A kind of telescopic two-tube lifting sub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801487U true CN206801487U (en) | 2017-12-26 |
Family
ID=60744024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720634382.2U Active CN206801487U (en) | 2017-06-02 | 2017-06-02 | A kind of telescopic two-tube lifting sub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206886A (en) * | 2020-01-17 | 2020-05-29 | 广州海洋地质调查局 | Drill string suspension method for ocean deep drilling operation |
-
2017
- 2017-06-02 CN CN201720634382.2U patent/CN206801487U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111206886A (en) * | 2020-01-17 | 2020-05-29 | 广州海洋地质调查局 | Drill string suspension method for ocean deep drilling operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230721 Address after: 300000 No. 189, Weiguo Road, Hedong District, Tianjin Patentee after: Tianjin Geothermal Exploration and Development Designing Institute Patentee after: Tianjin Geothermal Exploration and Development Design Institute Co.,Ltd. Address before: 300000 No. 189, Weiguo Road, Hedong District, Tianjin Patentee before: Tianjin Geothermal Exploration and Development Designing Institute |