CN201908587U - Falling-preventing sliding centralizer - Google Patents

Falling-preventing sliding centralizer Download PDF

Info

Publication number
CN201908587U
CN201908587U CN2010206911890U CN201020691189U CN201908587U CN 201908587 U CN201908587 U CN 201908587U CN 2010206911890 U CN2010206911890 U CN 2010206911890U CN 201020691189 U CN201020691189 U CN 201020691189U CN 201908587 U CN201908587 U CN 201908587U
Authority
CN
China
Prior art keywords
centralizer
main body
box cupling
cylinder body
falling
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 - Lifetime
Application number
CN2010206911890U
Other languages
Chinese (zh)
Inventor
黄晓东
张辉
陈瑞祥
姚满仓
高鹏
张丽萍
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.)
XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
China National Petroleum Corp
Original Assignee
XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
China National Petroleum Corp
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 XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST, China National Petroleum Corp filed Critical XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Priority to CN2010206911890U priority Critical patent/CN201908587U/en
Application granted granted Critical
Publication of CN201908587U publication Critical patent/CN201908587U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Abstract

The utility model relates to the technical field of centralizing devices for sucker rods of horizontal wells in oil fields, in particular to a falling-preventing sliding centralizer. The falling-preventing sliding centralizer comprises a sliding centralizer main body, a centralizer coupling, a left cylinder body, a right cylinder body and a back cap, wherein a concave hole is formed in the middle at the left end of the left cylinder body; the right cylinder body comprises a right main body and a lug boss; a lug boss with the same outside diameter as the right main body is fixed at the left end of the right main body and is positioned in the concave hole; the right part of the left main body and the left part of the right main body are respectively and fixedly arranged in the centralizer coupling through threads; the outer surface of the centralizer coupling is in a step shape with a wide left part and a narrow right part; the sliding centralizer main body is sleeved on the step at the right part of the centralizer coupling; and the back cap is positioned at the right part of the centralizer coupling. The falling-preventing sliding centralizer has a reasonable and compact structure and is convenient to use; by adopting an embedded falling-preventing technology on the basis of the sliding centralization, compared with the traditional roller type centralizer, ear resistance is improved and the torsion generated by a bolt support can be released, thereby the reliability of the whole bolt support is improved and the cost is reduced.

Description

Anticreep slidingtype centralizer
Technical field
The utility model relates to oilfield horizontal well sucker rod erection device technical field, is a kind of anticreep slidingtype centralizer.
Background technology
Horizontal well hole deviation section requires rod string is effectively set upright, thereby reduces the friction of roofbolt and oil pipe, and the exceptional well body structure of horizontal well makes roofbolt be subjected to the effect of bigger torsional moment at work simultaneously, and the phenomenon of threading off appears in roofbolt system easily.Present employed roller type centralizer anti-wear performance is poor, and the moment of torsion that produces in the motion process is difficult for discharging, and cost is higher.
Summary of the invention
The utility model provides a kind of anticreep slidingtype centralizer, has overcome the deficiency of above-mentioned prior art, and it is poor that it can effectively solve existing roller type centralizer anti-wear performance, and the moment of torsion that produces in the motion process is difficult for discharging, and the cost problem of higher.
The technical solution of the utility model realizes by following measure: a kind of anticreep slidingtype centralizer comprises slidingtype centralizer main body, centralizer box cupling, left-hand cylinder body, right cylindrical shell and back of the body cap; There is shrinkage pool at right-hand member middle part at the left-hand cylinder body, right cylindrical shell comprises right main body and boss, the left end of right main body is fixed with and the identical boss of right main body external diameter, boss is positioned at shrinkage pool, the right part of left-hand cylinder body and the left part of right main body are fixedly mounted in the centralizer box cupling by screw thread respectively, the external surface of centralizer box cupling is narrow step-like of the wide right part of left part, slidingtype centralizer main body is sleeved on the right part step of centralizer box cupling, back of the body cap is positioned at the right-hand of centralizer box cupling, the external diameter of back of the body cap is greater than the external diameter of centralizer box cupling right part step, and back of the body cap is fixedly mounted on the right main body by screw thread and holds out against the centralizer box cupling.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
Can be fluted on the above-mentioned centralizer box cupling right part step.
The left part of above-mentioned left-hand cylinder body can be fixed with the positive stop lug boss of external diameter greater than the left-hand cylinder body diameter, and the centralizer box cupling holds out against on positive stop lug boss.
The utility model reasonable and compact in structure, easy to use, it adopts embedded anticreep technology on the basis that slidingtype is set upright, compare with roller type centralizer in the past, improve abrasion resistance, can discharge the moment of torsion that roofbolt produces, thereby improved the reliability of whole roofbolt, and reduced cost.
Description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment.
Coding in the accompanying drawing is respectively: 1 is slidingtype centralizer main body, and 2 is the centralizer box cupling, and 3 is the left-hand cylinder body, and 4 are back of the body cap, and 5 is shrinkage pool, and 6 is right main body, and 7 is boss, and 8 is groove, and 9 is positive stop lug boss.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: the position relation of upper and lower, left and right etc. is what to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, this anticreep slidingtype centralizer comprises slidingtype centralizer main body 1, centralizer box cupling 2, left-hand cylinder body 3, right cylindrical shell and back of the body cap 4; There is shrinkage pool 5 at right-hand member middle part at left-hand cylinder body 3, right cylindrical shell comprises right main body 6 and boss 7, the left end of right main body 6 is fixed with and the identical boss 7 of right main body 6 external diameters, boss 7 is positioned at shrinkage pool 5, the left part of the right part of left-hand cylinder body 3 and right main body 6 is fixedly mounted in the centralizer box cupling 2 by screw thread respectively, the external surface of centralizer box cupling 2 is narrow step-like of the wide right part of left part, slidingtype centralizer main body 1 is sleeved on the right part step of centralizer box cupling 2, back of the body cap 4 is positioned at the right-hand of centralizer box cupling 2, the external diameter of back of the body cap 4 is greater than the external diameter of centralizer box cupling 2 right part steps, back of the body cap 4 is fixedly mounted on the right main body 6 by screw thread and holds out against centralizer box cupling 2, slidingtype centralizer main body 1 is existing known centralizer, like this, when the oil well pump operate as normal, the utility model is done with rod string and is pumped, when rod string produces reverse torque, because boss 7 is positioned at the damascene structures of shrinkage pool 5, can prevent the dropout of rod string screw thread; Slidingtype centralizer main body 1 is wear-resisting, can reduce moment of torsion.
Can according to actual needs above-mentioned anticreep slidingtype centralizer be made further optimization and/or improvements:
As shown in Figure 1, fluted 8 on the centralizer box cupling 2 right part steps, like this, can increase the radial contraction of slidingtype centralizer main body 1.
As shown in Figure 1, the left part of left-hand cylinder body 3 is fixed with the positive stop lug boss 9 of external diameter greater than left-hand cylinder body 3 external diameters, and centralizer box cupling 2 holds out against on positive stop lug boss 9, can increase the ability of the anti-axial force of centralizer box cupling 2 like this.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.

Claims (3)

1. an anticreep slidingtype centralizer is characterized in that comprising slidingtype centralizer main body, centralizer box cupling, left-hand cylinder body, right cylindrical shell and back of the body cap; There is shrinkage pool at right-hand member middle part at the left-hand cylinder body, right cylindrical shell comprises right main body and boss, the left end of right main body is fixed with and the identical boss of right main body external diameter, boss is positioned at shrinkage pool, the right part of left-hand cylinder body and the left part of right main body are fixedly mounted in the centralizer box cupling by screw thread respectively, the external surface of centralizer box cupling is narrow step-like of the wide right part of left part, slidingtype centralizer main body is sleeved on the right part step of centralizer box cupling, back of the body cap is positioned at the right-hand of centralizer box cupling, the external diameter of back of the body cap is greater than the external diameter of centralizer box cupling right part step, and back of the body cap is fixedly mounted on the right main body by screw thread and holds out against the centralizer box cupling.
2. anticreep slidingtype centralizer according to claim 1 is characterized in that on the centralizer box cupling right part step fluted.
3. anticreep slidingtype centralizer according to claim 1 and 2 is characterized in that the left part of left-hand cylinder body is fixed with the positive stop lug boss of external diameter greater than the left-hand cylinder body diameter, and the centralizer box cupling holds out against on positive stop lug boss.
CN2010206911890U 2010-12-31 2010-12-31 Falling-preventing sliding centralizer Expired - Lifetime CN201908587U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206911890U CN201908587U (en) 2010-12-31 2010-12-31 Falling-preventing sliding centralizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206911890U CN201908587U (en) 2010-12-31 2010-12-31 Falling-preventing sliding centralizer

Publications (1)

Publication Number Publication Date
CN201908587U true CN201908587U (en) 2011-07-27

Family

ID=44300790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206911890U Expired - Lifetime CN201908587U (en) 2010-12-31 2010-12-31 Falling-preventing sliding centralizer

Country Status (1)

Country Link
CN (1) CN201908587U (en)

Similar Documents

Publication Publication Date Title
CN201121492Y (en) Built-in anti-releasing device for sucker rod
CN201908587U (en) Falling-preventing sliding centralizer
CN202031494U (en) Novel high-wear-resistant centering device of sucker rod
CN202883626U (en) Double-threaded screw
CN209875076U (en) Anti-drop and anti-eccentric wear device for sucker rod
CN203978324U (en) A kind of drilling well roller centralizer
CN201254961Y (en) Anti-releasing rotating wax scraping centralizer for sucker rod roller
CN201367859Y (en) Anti-run device of thick oil horizontal well double-nut anti-run sucker rod
CN202925470U (en) Extrusion-type combined integral inhaul cable anchor device
CN205936435U (en) Self-lubricating spiral centralizer for sucker rod
CN204729022U (en) A kind of multi-point support type ocean drill rod threaded nipple
CN201236636Y (en) Anti-corrosion bias-wearing proof sucker-rod coupling
CN210371528U (en) Bolt type pin shaft pair
CN204299490U (en) A kind of universal Anti-drop centralizer
CN211144397U (en) Special anti-drop sucker rod of screw pump
CN201474626U (en) Reverse buckle double joint
CN203925960U (en) Improved eccentric feedback oil sucking pump
CN201121490Y (en) Anti-falling sucker-rod post of thick oil horizontal well
CN206655663U (en) A kind of isometrical hollow pipe roofbolt of eccentric abrasion prevention
CN201474624U (en) Drill rod joint with double steps
CN206418972U (en) A kind of coiled rod
CN201284626Y (en) Sliding block type anti-releasing device for sucker rod
CN201738833U (en) Sucker rod coupling
CN2786271Y (en) Centralizer arranged on hollow sucker rod joint stub
CN204729021U (en) A kind of gentle support type ocean drill rod threaded nipple

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20110727

CX01 Expiry of patent term