CN2485408Y - Rigid anti-twist and anti-drop sucker rods - Google Patents
Rigid anti-twist and anti-drop sucker rods Download PDFInfo
- Publication number
- CN2485408Y CN2485408Y CN 01223639 CN01223639U CN2485408Y CN 2485408 Y CN2485408 Y CN 2485408Y CN 01223639 CN01223639 CN 01223639 CN 01223639 U CN01223639 U CN 01223639U CN 2485408 Y CN2485408 Y CN 2485408Y
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- well
- rod
- rigid
- utility
- 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
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Abstract
The utility model provides a rigid anti-torsion and anti-dropping sucker rod post used for underground dropping protection in the directional well or small displacement horizontal well of the oil field, comprising a sucker rod 1 and a coupling 2; wherein, one end of the sucker rod 1 is a convex end, while the other is a concave end; the sucker rod 1 with the convex end is abutted with one end of the sucker rod 1 with a convex end and the coupling 2; the whole rod post forms a rigid integrity under the well, promising no disengaging phenomenon. The utility model solves the problem that the anti-dropping machine of the previous directional well or small displacement horizontal well increases the connection points of the sucker rod, causing the increasing of disengaging rate of the sucker rod, prolonging the maintenance-free period of the oil well and reducing the operation cost for repairing the well.
Description
The utility model is applicable to oil field directional well or little level of displacement well down-hole anticreep technical field, specifically, is the anti-anti-off sucker rod string of turning round of a kind of rigidity.
Spatially three-dimensional bending, down-hole complicated applied force reach the torque wrench moment that last button does not reach standard to the rod tube post of directional well or little level of displacement well owing to well, cause rod tube post dropout accident to take place often, 30% all was because pumping rod disengaging causes during whole nation inspection pump sump was inferior, mainly adopting high strength righting anti-abrasion sucker rod aspect directional well or the little level of displacement well centering dropout prevention at present, rotation nylon rotation centralizer and anticreep box cupling prevent righting anti-abrasion and the anticreep problem in directional well or the little level of displacement well.High strength righting anti-abrasion sucker rod be on common sucker rod respectively three high-strength nylon pieces of even injection moulding (the relative sucker rod of nylon block can not move axially, can not be around the sucker rod rotational) prevent the eccentric wear of sucker rod, though solved the eccentric wear of sucker rod, but do not solve the release problem of rod string because of down-hole moment of torsion that complicated applied force produces, rotation nylon centralizer be on sucker rod substitute injection moulding a high-strength nylon wiper block (the relative sucker rod of nylon block can move axially, and can be) around the sucker rod rotational, well solved sucker rod righting anti-abrasion problem, but it is big because of consumption in a bite well, increased the tie point of sucker rod relatively, make the pumping rod disengaging probability increase, polished rod load increases, and effectively not solving the rod string moment of torsion discharges, an anticreep box cupling part is to have utilized the head still of living, a part utilizes the principle of leading screw+nut+locking nut to prevent the rod string dropout, but these several foulings do not solve the crude oil medium sand, wax, factors such as dirt cause the anticreep parts stuck and cause anticreep to lose efficacy.
The purpose of this utility model is to provide a kind of utilization tongue and groove engagement mechanically that every sucker rod is connected, thereby realize preventing turning round anticreep, and box cupling will be with the anti-anti-off sucker rod string of turning round of rigidity that bearing surface compress formation rigidity rod string that pushes away of recessed end rigidity sucker rod.
The utility model is achieved in that and comprises sucker rod 1, box cupling 2 that box cupling 2 is socketed in outside the sucker rod 1, connects with concavo-convex match groove between the every sucker rod 1.
The utility model also adopts following technical scheme:
One end of sucker rod 1 is a nose, and the other end is recessed end.
Band nose sucker rod 1 with recessed end and be with an end of box cupling 2 sucker rods 1 to dock.
Advantage of the present utility model is: whole roofbolt forms a rigid unitary in the down-hole, the phenomenon of threading off can not appear, solved in the past that the anti-dropping device that descends has increased the problem that the sucker rod tie point causes beam hanger dropout probability to increase in directional well or the little level of displacement well, prolong oil well repair free period, reduced the workover treatment expense.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further described:
Principle of the present utility model is: the connection utilization of every sucker rod 1 concavo-convex end engagement mechanically realizes the anti-anticreep of turning round with its butt joint, and box cupling 2 will compress and form a rigidity rod string with the bearing surface that pushes away of the sucker rod 1 of recessed end.
When ordinary production, because bending and the complicated applied force of rod string 1 on three dimensions, make sucker rod 1 produce additional torque, cause sucker rod 1 self axis to produce rotation, but box cupling 2 does not rotate with rigidity sucker rod 1 because of having to produce the moment of torsion opposite with additional torque, therefore, the rigidity anti-roofbolt of turning round the anticreep sucker rod in full down-hole forms an integral body to be prevented turning round the anticreep roofbolt, thereby has avoided the generation of rod string dropout accident.
The sucker rod 1 of every band nose dock with a end of sucker rod 1 with recessed end and band box cupling 2, and rotation box cupling 2 pushes away the sucker rod torque wrench moment that reaches the API requirement on the bearing surface and gets final product to prevent turning round the anticreep sucker rod with the rigidity of recessed end.
Claims (3)
1. rigidity is anti-turns round the anticreep sucker rod, comprises sucker rod (1), box cupling (2), and it is characterized in that: box cupling (2) is socketed in outside the sucker rod (1), connects with concavo-convex match groove between the every sucker rod (1).
2. rigidity according to claim 1 is anti-turns round anti-off sucker rod string, and it is characterized in that: an end of sucker rod (1) is a nose, and the other end is recessed end.
3. rigidity according to claim 1 is anti-turns round anti-off sucker rod string, it is characterized in that: band nose sucker rod (1) with recessed end and be with an end of the sucker rod (1) of box cupling (2) to dock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01223639 CN2485408Y (en) | 2001-05-14 | 2001-05-14 | Rigid anti-twist and anti-drop sucker rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01223639 CN2485408Y (en) | 2001-05-14 | 2001-05-14 | Rigid anti-twist and anti-drop sucker rods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2485408Y true CN2485408Y (en) | 2002-04-10 |
Family
ID=33640175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01223639 Expired - Lifetime CN2485408Y (en) | 2001-05-14 | 2001-05-14 | Rigid anti-twist and anti-drop sucker rods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2485408Y (en) |
-
2001
- 2001-05-14 CN CN 01223639 patent/CN2485408Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110514 Granted publication date: 20020410 |