CN2758445Y

CN2758445Y - infiltration plated alloy corrosion proof oil pumping rod

Info

Publication number: CN2758445Y
Application number: CN 200420096668
Authority: CN
Inventors: 辛民昌; 王春和; 张居国
Original assignee: Shandong Nine Ring Petroleum Machinery Co Ltd
Current assignee: Shandong Nine Ring Petroleum Machinery Co Ltd
Priority date: 2004-10-10
Filing date: 2004-10-10
Publication date: 2006-02-15
Anticipated expiration: 2014-10-10

Abstract

The utility model provides an infiltration plated alloy corrosion proof pumping rod which belongs to the field of artificial lift devices. The utility model is composed of a rod head and a rod body, wherein the surfaces of the rod head and the rod body are plated with quenching and nickel plating phosphorus alloy corrosion proof anti-wear layers, and the thickness of the quenching and nickel plating phosphorus alloy corrosion proof anti-wear layer is 0.5 mm to 4.5 mm. Owing to the quenching and nickel plating phosphorus alloy corrosion proof anti-wear layers, the utility model not only can be prevented from being corroded by various media, but also can increase tensile strength by more than 10%, and a fatigue circulation cycle is increased to three times on the basis of current national trade standards. The utility model variety of the utility model comprises a pumping rod and the pumping rod pup joint and the polished rod thereof; a special torsion resistant pumping rod for a screw pump and the torsion resistant pumping rod pup joint and the torsion resistant polished rod thereof; a rod and hoop integrated pumping rod and the pup joint and the polished rod thereof.

Description

Plating alloy anti-corrosion pumping bar

Technical field

Plating alloy anti-corrosion pumping bar belongs to mechanical oil recovery equip ment device field.

Background technology

Existing sucker rod bears the synergy of multiple load and different corrosive mediums at work, well liquid contains salt solution or carbon dioxide or hydrogen sulfide or corrosion-causing bacteria in some oil well, the existence of these corrosive mediums or corrosion-causing bacteria greatly reduces application life of sucker rod.Generally corrosion is divided into chemical attack and electrochemical corrosion.

Especially be connected the polished rod at rod string top, the load maximum of bearing.In running, because slide relative of outer round surface of polished rod with the polished rod seal box, the polished rod surface successively contacts with atmosphere, well liquid simultaneously, suffered corrosion is even more serious than contact the corrosion that causes separately with atmosphere or well liquid, therefore require the polished rod outer round surface not only to have certain antiseptic property and anti-wear performance, but also require the tensile strength height.

Summary of the invention

The technical problems to be solved in the utility model is, a kind of anticorrosive abrasion-proof sucker rod is provided, and it is anticorrosion to improve, anti-wear performance and raising tensile strength.

The utility model is to realize like this, plating alloy anti-corrosion pumping bar, form by the bar head and the body of rod, whole at the described bar head and the body of rod by after quenching, heat once more from the surface and implement plating nickel-phosphorus alloy anticorrosion antiwear layer, its quenching and plating nickel-phosphorus alloy anticorrosion antiwear layer thickness thereof are 0.5mm～4.5mm.

The plating alloy anti-corrosion pumping bar that adopts foregoing invention to make, owing to quench and the existence of plating nickel-phosphorus alloy anticorrosion antiwear layer, can make this bar not only prevent the corrosion of various media in the down-hole, and can reduce the friction factor with oil pipe, reduce oil pumper load, reach the purpose of anticorrosion antiwear.Because the existence of quenching and plating nickel-phosphorus alloy anticorrosion antiwear layer thereof can improve more than 10% tensile strength, its fatigue strength is at σ _0.1During=540MPa, cycle capable of circulation＞3 * 10 ⁶, improve 2 times than the fatigue and cyclic cycle of existing national sector standard.

Invention of the present utility model is used kind and is comprised: sucker rod and sucker rod substitute thereof, polished rod; Special-purpose antitorque sucker rod of screw pump and antitorque sucker rod substitute thereof, antitorque polished rod; Pole band integral type sucker rod and pipe nipple thereof, polished rod.

Description of drawings

Fig. 1 is the structure diagram of first embodiment of the utility model;

Fig. 2 is the sectional drawing of Fig. 1;

Fig. 3 is the structure diagram of second embodiment of the utility model;

Fig. 4 is the sectional drawing of Fig. 3.

Accompanying drawing number: 1, bar head; 2, the body of rod; 3, quenching and plating nickel-phosphorus alloy anticorrosion antiwear layer thereof.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing illustrates structure of the present utility model.

As shown in drawings, the utility model plating alloy anti-corrosion pumping bar is made up of the bar head (1) and the body of rod (2), implements to quench and plating nickel-phosphorus alloy anticorrosion antiwear layer (3) on the surface of the described bar head (1) and the body of rod (2).

Claims

1, a kind of plating alloy anti-corrosion pumping bar is made up of the bar head (1) and the body of rod (2), it is characterized in that: implement to quench and plating nickel-phosphorus alloy anticorrosion antiwear layer (3) on the surface of the described bar head (1) and the body of rod (2).

2, plating alloy anti-corrosion pumping bar according to claim 1, its feature also is: the thickness of described quenching and plating nickel-phosphorus alloy anticorrosion antiwear layer (3) thereof is 0.5mm～4.5mm.

3, plating alloy anti-corrosion pumping bar according to claim 1, its feature also is: the kind of implementing quenching and plating nickel-phosphorus alloy anticorrosion antiwear layer (3) application thereof on the described surface comprises: sucker rod and sucker rod substitute thereof, polished rod; Special-purpose antitorque sucker rod of screw pump and antitorque sucker rod substitute thereof, antitorque polished rod; Pole band integral type sucker rod and pipe nipple thereof, polished rod.