CN106761458B - Diameter-telescopic screw head for pipe following - Google Patents
Diameter-telescopic screw head for pipe following Download PDFInfo
- Publication number
- CN106761458B CN106761458B CN201710086456.8A CN201710086456A CN106761458B CN 106761458 B CN106761458 B CN 106761458B CN 201710086456 A CN201710086456 A CN 201710086456A CN 106761458 B CN106761458 B CN 106761458B
- Authority
- CN
- China
- Prior art keywords
- curved
- screw terminal
- external thread
- thread structure
- screw head
- 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.)
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Links
- 230000008602 contraction Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 21
- 239000000498 cooling water Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000008828 contractile function Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a screw head with a telescopic diameter for pipe following, which is characterized in that: the screw comprises a curved screw head, wherein the curved screw head is divided into a plurality of unit blocks through a plurality of wedge-shaped grooves, the outer side of the curved screw head of each unit block is provided with 1 external thread structure, and a ball is arranged between each external thread structure and the curved screw head; the outer side face of each curved screw head and the inner surface of the external thread structure are the same contraction-shaped curved faces, the outer surface of the external thread structure is a circular curved face and is provided with threads, grooves are formed in the outer side face of each curved screw head and the inner surface of the external thread structure, and balls are arranged in the grooves. The transmission of torque and pressure and the delivery of cooling water can be realized when the pipe is followed. But after the sleeve pipe is followed to predetermined position, need not lift the sleeve pipe, can directly dismantle the screw head in the downthehole, then directly add new sleeve pipe, improve and follow the pipe efficiency, the wearing and tearing of greatly reduced drill bit and sleeve pipe moreover make the drilling tubular product can use for a longer time.
Description
Technical field
The present invention relates to one kind using screw terminal with pipe, and especially a kind of diameter is telescopic to use screw terminal with pipe.
Background technology
Drilling operation is currently that a kind of most direct method of geological conditions and hydrologic condition is understood in engineering investigation, is being drilled
In work progress due to geological conditions, across hole phenomenon often occurs for drilling.The domestic place collapsed for drilling at present
Reason can use drilling fluid retaining wall or pipe-following drilling.But it constructed for for some shallow hole drillings of 100m to 300m
Construction cost will be greatly increased using the drilling fluid of special configuration in journey, influences project benefit.Therefore in shallow bore hole work progress
The measure of middle retaining wall leak stopping is fallen the hole section to collapse using casing off mainly or using the method with pipe.When with pipe construction
The tool that the screw terminal used is connecting sleeve and drilling rod is waited, the torque of transmission drilling machine and longitudinal lifting or pushing power are responsible for, and
And there is channel transfer cooling circulating water.
The step of pipe-following drilling is：
, bring sleeve opening into screw terminal, mobile drilling makes machine bar be connect with screw terminal；
, start drilling machine by casing with entering predetermined depth；
, above carry casing, screw terminal is loosened, with drilling machine casing be pressed into pipe position；
, unloading screw terminal, propose aperture then new casing is added.
In pipe-following drilling because torque is excessive, screw terminal is dismantled after being completed with pipe will cover conventional screw head
Pipe is fixed, and reversely being twisted using pipe wrench or other tools can just disassemble.But when with pipe, screw terminal is located at upper level casing
Within, gap is minimum between two-stage casing, cannot use conventional tool fixed sleeving.If directly invert, can because casing it
Between thread gluing and with the excessive reason of torque when pipe, often the casing in other holes is inverted together.Really reversion comes out
Part is not necessarily screw terminal, thus must carry to aperture fixing casing and can be only achieved desired effect.
Third step in the above process since screw terminal with casing is to be threadedly coupled, during with pipe between screw thread by
The torque being subject to when prodigious pressure and revolution, therefore thread gluing phenomenon can occur.Screw terminal must thus be carried to hole
Mouthful, screw terminal could be disassembled after fixed sleeving.But often hole wall collapses the cased drilling hole section of needs, above carries set
Probe stone is had during pipe and the face of collapsing caves in the case where closing up, thus casing can be caused to push less than predetermined depth.It needs
Again it to be influenced with tube efficiency, to being also to have considerable wear with pipe bit and casing with pipe.
Invention content
The object of the present invention is to provide a kind of diameter it is telescopic with pipe use screw terminal.It can be made with pipe
When realize torque and the transmission of pressure and the conveying of cooling water.But in casing with to after predetermined position, not needing
Casing is carried, screw terminal can be directly dismantled in hole, then directly adds new casing, is improved with tube efficiency, and greatly reduce brill
The abrasion of head and casing allows probing tubing to use more long.
Technical scheme of the present invention：A kind of diameter is telescopic to use screw terminal with pipe, it is characterised in that：Include curved
Screw terminal, curved screw terminal are divided into several cell blocks by several wedge grooves, are set on the outside of the curved screw terminal of each cell block
It is equipped with 1 external thread structure, ball is provided between external thread structure and curved screw terminal；The lateral surface of each curved screw terminal
It is identical contraction shape curved surface with external thread structure inner surface, the outer surface of external thread structure is circular curved surface and is provided with spiral shell
It is arranged fluted on line, the lateral surface of every piece of curved screw terminal and the inner surface of external thread structure, ball is provided in groove.
Diameter above-mentioned is telescopic to use screw terminal with pipe, and it is bent that the curved screw terminal is vertically provided with perforation
The limbers of shape screw terminal.
Diameter above-mentioned is telescopic to use screw terminal, the upper and lower surface of every piece of external thread structure to be arranged with pipe
There are 1 piece of fixture block, curved screw terminal to be stuck between 2 pieces of fixture blocks.
Beneficial effects of the present invention：Compared with prior art, which is applied to pipe-following drilling operation, due to song
The curved surface of shape screw terminal outer surface and external thread structure inner surface is simultaneously non-circular, but shrinkage type curved surface, when clockwise shearing,
The two curved surface, which is staggered, can cause screw terminal diameter to increase, and reach working condition, can be returned to again both when rotating counterclockwise normal
State, screw head have contractile function by drilling machine positive and negative rotation.Using similar between curved screw terminal and external thread structure
In the connection type of bearing, the effect of cylindrical roller makes to become rolling friction by sliding friction between the two, and frictional force reduces
Be conducive to the mutual movement between curved screw terminal and external thread structure.In casing with to after predetermined position, need not above carry set
Pipe, can directly dismantle screw terminal in hole, then directly add new casing, carry in omission the step for.So every time with pipe
Drill bit is with lower how many distance, so that it may to add long casing, not only improve with tube efficiency, but also greatly reduce drill bit and casing
Abrasion allows probing tubing to use more long.Except playing the role of reaching conventional screw head：It transmits torque, flushing can be conveyed
Liquid or cooling water can transmit the strength that drilling machine above puies forward and pushes.In addition most important effect be can be in hole by screw
Head directly takes apart, it is not necessary to above carry to aperture.
Description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Attached drawing 2 is the schematic cross-sectional view of attached drawing 1；
Attached drawing 3 is the structural schematic diagram of external thread structure；
Attached drawing 4 is the structural schematic diagram of external thread structure；
Reference numeral：The curved screw terminals of 1-, 2- wedge grooves, 3- external thread structures, 4- balls, 5- grooves, the limbers 6-, 7-
Fixture block.
Specific implementation mode
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
The embodiment of the present invention：A kind of telescopic diameter with pipe includes song as shown in attached drawing 1-4 using screw terminal
Shape screw terminal 1, curved screw terminal 1 are divided into several cell blocks, the curved screw terminal 1 of each cell block by several wedge grooves 2
Outside is provided with 1 external thread structure 3, and ball 4 is provided between external thread structure 3 and curved screw terminal 1；Each curved screw
First 1 lateral surface and 3 inner surface of external thread structure is identical contraction shape curved surface, and the outer surface of external thread structure 3 is circle
Curved surface and it is provided with screw thread, is arranged fluted 5 on the lateral surface of every piece of curved screw terminal 1 and the inner surface of external thread structure 3,
Cylindrical type ball 4 is provided in groove 5.Ball 4, which fills quantity, to be advisable with reaching 4 gaps of ball less than 4 diameter of ball.
For this structure in use, when the screw terminal normal condition, than this grade casing inner diameter of diameter is small, screw terminal screw thread with
Casing screw thread does not connect closely.When rotating clockwise curved screw terminal 1, due to external thread structure 3 and curved screw terminal 1 it
Between connected using ball 4, stressing conditions are similar to bearing, so external thread structure 3 will not follow curved screw terminal 1 rotate.
1 outer surface of curved screw terminal and 3 inner surface of external thread structure are identical shrinkage type curved surfaces, when the two is staggered, curved screw
First 1 be relatively large in diameter be partially moved to 3 thick wall part of external thread structure, lead to the enlarged diameter of entire screw terminal, be referred to as at this time
Screw terminal working condition.Screw terminal screw thread and casing screwed connection originally be not close, at this time because screw terminal diameter is increased
Reason, it will closely coupled.And when with pipe, drilling rod casing all rotates clockwise, due to the effect of clockwise torque, screw
The connection of head and casing can be more and more closer, and the risk of slide fastener is not present.When casing is with causing precalculated position, screw terminal is inverted.
The presence of ball makes the force of sliding friction between curved screw terminal 1 and external thread structure 3 become force of rolling friction, and frictional force is significantly
Reduce.Curved screw terminal is easy to return to normal condition with external thread structure, and screw terminal diameter becomes smaller at this time, between elimination screw thread
Thread gluing phenomenon, screw terminal and casing can be separated at this time by reversion, to realize the purpose for dismantling screw terminal in hole.
The curved screw terminal 1 is vertically provided with the limbers 6 for penetrating through curved screw terminal 1, is rinsed for conveying
Liquid and cooling water.
The upper and lower surface of every piece of external thread structure 3 is each provided with 1 piece of fixture block 7, and curved screw terminal 1 is stuck in 2 pieces of cards
Between block 7, drilling machine can be transmitted by the two fixture blocks 7 and be applied to the upper body of casing or lower amount of pressure, and by curved screw
First 1 links together with external thread structure 3.
Claims (3)
1. a kind of diameter is telescopic to use screw terminal with pipe, it is characterised in that：It include curved screw terminal（1）, curved screw
Head（1）Pass through several wedge grooves（2）It is divided into several cell blocks, the curved screw terminal of each cell block（1）Outside is provided with 1
External thread structure（3）, external thread structure（3）With curved screw terminal（1）Between be provided with ball（4）；Each curved screw terminal（1）
Lateral surface and external thread structure（3）Inner surface is identical contraction shape curved surface, external thread structure（3）Outer surface be circle
Curved surface and it is provided with screw thread, every piece of curved screw terminal（1）Lateral surface and external thread structure（3）Inner surface on be provided with it is recessed
Slot（5）, groove（5）In be provided with the ball（4）.
2. diameter according to claim 1 is telescopic to use screw terminal with pipe, it is characterised in that：The curved screw terminal
（1）Vertically it is provided with the curved screw terminal of perforation（1）Limbers（6）.
3. diameter according to claim 1 is telescopic to use screw terminal with pipe, it is characterised in that：Every piece of external thread structure
（3）Upper and lower surface be each provided with 1 piece of fixture block（7）, curved screw terminal（1）It is stuck in 2 pieces of fixture blocks（7）Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710086456.8A CN106761458B (en) | 2017-02-17 | 2017-02-17 | Diameter-telescopic screw head for pipe following |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710086456.8A CN106761458B (en) | 2017-02-17 | 2017-02-17 | Diameter-telescopic screw head for pipe following |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761458A CN106761458A (en) | 2017-05-31 |
| CN106761458B true CN106761458B (en) | 2018-10-23 |
Family
ID=58957325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710086456.8A Active CN106761458B (en) | 2017-02-17 | 2017-02-17 | Diameter-telescopic screw head for pipe following |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761458B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828050A (en) * | 1986-05-08 | 1989-05-09 | Branham Industries, Inc. | Single pass drilling apparatus and method for forming underground arcuate boreholes |
| JPH0759873B2 (en) * | 1989-04-18 | 1995-06-28 | 株式会社佐藤企業 | Pile hole excavation method and device |
| CN103775003B (en) * | 2014-01-27 | 2015-12-09 | 中国石油大学(华东) | A kind ofly reduce the device that gas drilling creeps into frictional resistance |
| CN205823162U (en) * | 2016-07-13 | 2016-12-21 | 西安科技大学 | A kind of pipe-following drilling eccentric drilling device |
| CN206513313U (en) * | 2017-02-17 | 2017-09-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Diameter-telescopic screw head for pipe following |
-
2017
- 2017-02-17 CN CN201710086456.8A patent/CN106761458B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106761458A (en) | 2017-05-31 |
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