CN202266193U - Bidirectional reaming tool - Google Patents

Bidirectional reaming tool Download PDF

Info

Publication number
CN202266193U
CN202266193U CN 201120358479 CN201120358479U CN202266193U CN 202266193 U CN202266193 U CN 202266193U CN 201120358479 CN201120358479 CN 201120358479 CN 201120358479 U CN201120358479 U CN 201120358479U CN 202266193 U CN202266193 U CN 202266193U
Authority
CN
China
Prior art keywords
reaming
sleeve
tool
bidirectional
hard alloy
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
CN 201120358479
Other languages
Chinese (zh)
Inventor
刘青云
张微
张磊
沈晓阳
陆洋阳
谢东品
曾艳春
李应明
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.)
CNPC Great Wall Drilling Co
Original Assignee
CNPC Great Wall Drilling Co
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 CNPC Great Wall Drilling Co filed Critical CNPC Great Wall Drilling Co
Priority to CN 201120358479 priority Critical patent/CN202266193U/en
Application granted granted Critical
Publication of CN202266193U publication Critical patent/CN202266193U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a drifting tool for highly deviated wells, horizontal wells and extended reach wells in oilfields, and particularly relates to a bidirectional reaming tool. A female buckle is processed at the upper end of a mandrel of the reaming tool, a trapezoidal buckle is processed at the middle part, a hard alloy block is embedded on a guide shoe at the lower end, two sides of a packed hole reaming part of a sleeve adopt arc surface transition, hard alloy blocks are embedded on arc surfaces and the packed hole reaming part, the trapezoidal buckle is adopted between the sleeve and the mandrel for connection, a backup cap is arranged on the mandrel by threaded connection, and the sleeve is further fixed. The bidirectional reaming tool disclosed by the utility model can realize forward and reverse bidirectional reaming, trim a drilled borehole, eliminate sundries attached on well walls and enable the borehole to be unblocked. The bidirectional reaming tool can overcome the defects that the existing reaming tool can only realize forward reaming and can not repair the well walls, and the reaming effect is poor.

Description

A kind of two-way reaming instrument
Technical field:
The utility model relates to the drifting instrument that a kind of oil field high angle hole, horizontal well, extended reach well are used, particularly a kind of two-way reaming instrument.
Background technology:
At present, at high angle hole, horizontal well in the construction of exceptional well types such as extended reach well, is drilled into when being prone to the stratum of undergauge takes place, and like untimely reaming, will cause tight trip because of hole shrinkage.Existing reaming instrument can only be realized positive reaming, and can not place under repair to the borehole wall, the reaming weak effect.In order further to improve drilling efficiency, tackle existing reaming instrument and carry out technological improvement.
The utility model content:
The technical problem that the utility model will solve provides a kind of two-way reaming instrument, this reaming tool implementation positive and negative two-way reaming, drilling well eye is repaired, remove and be attached to the foreign material on the borehole wall, make well unblocked.Overcome existing reaming instrument, can only realize positive reaming, and can not place under repair to the borehole wall, the deficiency of reaming weak effect.
The technical scheme that the utility model is taked is: a kind of two-way reaming instrument, by axle, sleeve, be equipped with cap and hard alloy blocks is formed; The axle upper end is processed with box; Mid portion is processed with trapezoid buckle, studs with hard alloy blocks on the guide shoe of lower end, and sleeve is met the eye on every side both sides, reaming position and adopted the cambered surface transition; Cambered surface all studs with hard alloy blocks with meeting the eye on every side on the reaming position; Adopt trapezoid buckle to connect between sleeve and the axle, cap preparation thread is connected on the axle, and fixed muffle.
The beneficial effect of the utility model is: the utility model is owing to adopted and meet the eye on every side both sides, reaming position at sleeve and carry out the cambered surface transition; Cambered surface with meet the eye on every side the mode that all studs with hard alloy blocks on the reaming position; Thereby can satisfy the job requirements of the smooth borehole wall of drifting; Also can handle the unpredictable complex situations in down-hole, reduce the risk of drilling well, satisfy the function of two-way reaming drifting simultaneously; Owing to adopted on the guide shoe of axle lower end and stud with hard alloy blocks, thereby have slim-hole is carried out preliminary cutting function, played the effect of safe guiding; Because sleeve adopts trapezoid buckle to be connected with axle, has increased the bonding strength and the torsional strength of instrument, when the reaming tool failures, changing new sleeve can work on simultaneously.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Accompanying drawing is the structural representation of the utility model.
The specific embodiment:
Shown in accompanying drawing, a kind of two-way reaming instrument is by axle 1, sleeve 2, be equipped with cap 3 and hard alloy blocks 4 is formed; Axle 1 processes at one time, and the centre does not have screwed connection, has ensured the intensity of instrument; Axle 1 upper end is processed with box, and mid portion is processed with trapezoid buckle, studs with hard alloy blocks 4 on the guide shoe of lower end; Can realize slim-hole is carried out preliminary cutting, play the effect of safety guiding; Sleeve 2 is met the eye on every side both sides, reaming position and is adopted the cambered surface transition, and cambered surface all studs with hard alloy blocks 4 with meeting the eye on every side on the reaming position; Adopt trapezoid buckle to connect between sleeve 2 and the axle 1, increased the bonding strength and the torsional strength of instrument; After sleeve 2 is installed on the axle 1, install being equipped with cap 3 again, be equipped with cap 3 and be threaded on the axle 1, to 2 fixations of sleeve.
The utility model top is connected with drill string, and after connecting, the lower going-into-well intraocular carries out the drifting reaming.In the reaming process,, have bigger moment of torsion, thereby the pressure of the drill is unsuitable excessive, generally just can at 10-20KN because the borehole wall is cut at spiral centralizer position.Frequent movable drilling tool in the process of reaming is observed the down-hole situation and the situation of reaming well.When carrying out back reaming, also should not strengthen and carry the pressure of the drill, carrying the pressure of the drill on general is 10-20KN, frequent movable drilling tool is observed the situation of down-hole and the situation of back reaming well.After having carried out the drifting reaming, eliminated little shoulder, hole diameter is smooth.
Be with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.

Claims (1)

1. two-way reaming instrument is by axle (1), sleeve (2), be equipped with cap (3) and hard alloy blocks (4) is formed; It is characterized in that: axle (1) upper end is processed with box; Mid portion is processed with trapezoid buckle, studs with hard alloy blocks (4) on the guide shoe of lower end, and sleeve (2) is met the eye on every side both sides, reaming position and adopted the cambered surface transition; Cambered surface all studs with hard alloy blocks (4) with meeting the eye on every side on the reaming position; Adopt trapezoid buckle to connect between sleeve (2) and the axle (1), be equipped with cap (3) and be threaded on the axle (1), and fixed muffle (2).
CN 201120358479 2011-08-28 2011-08-28 Bidirectional reaming tool Expired - Fee Related CN202266193U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120358479 CN202266193U (en) 2011-08-28 2011-08-28 Bidirectional reaming tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120358479 CN202266193U (en) 2011-08-28 2011-08-28 Bidirectional reaming tool

Publications (1)

Publication Number Publication Date
CN202266193U true CN202266193U (en) 2012-06-06

Family

ID=46156991

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120358479 Expired - Fee Related CN202266193U (en) 2011-08-28 2011-08-28 Bidirectional reaming tool

Country Status (1)

Country Link
CN (1) CN202266193U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108533180A (en) * 2018-04-24 2018-09-14 中国海洋石油集团有限公司 A kind of drilling engineering is with boring hole-drawing device and reaming method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108533180A (en) * 2018-04-24 2018-09-14 中国海洋石油集团有限公司 A kind of drilling engineering is with boring hole-drawing device and reaming method

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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: 20120606

Termination date: 20140828

EXPY Termination of patent right or utility model