CN205314929U

CN205314929U - Anticorrosive sucker rod of calorization

Info

Publication number: CN205314929U
Application number: CN201521122828.0U
Authority: CN
Inventors: 辛民昌; 张智峰; 彭建平; 张居国; 杨新房; 孟子塬; 王立永
Original assignee: JIUHUAN PETROLEUM MACHINERY CO Ltd SHANDONG
Current assignee: JIUHUAN PETROLEUM MACHINERY CO Ltd SHANDONG; Shandong Nine Ring Petroleum Machinery Co Ltd
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2016-06-15
Anticipated expiration: 2025-12-31

Abstract

The utility model provides an anticorrosive sucker rod of calorization, comprises a pole body, the body of rod is equipped with the calorization anticorrosive coating outward, and the calorization anticorrosive coating includes the outer and ferro -aluminium alloy inlayer of pure aluminium. The quick hot dipped aluminum technique of sucker rod utilization can effectually prevent various corruption liquid, gaseous corruption to the sucker rod in the well liquid on sucker rod surface formation metallurgical bonding's surface aluminizing layer to reduce corrosion failure, reduce the cost for oil production, improve the production efficiency of oil well.

Description

A kind of aluminising anti-corrosion pumping bar

Technical field

The utility model relates to technical field of oil extraction equipment, is specifically related to a kind of aluminising anti-corrosion pumping bar.

Background technology

At present, in oil exploration equipment, the corrosion of sucker rod is that one of root of repeated stress failure occurs for it, and in the Working environment of sucker rod, the existence of various chemical corrosion material can aggravate its corrosion, for a long time through tension-La repeated stress and corrosive nature, make it that corrosion fatigue very easily occur, reduce work-ing life. Corrosion and abrasion will shorten the replacement cycle of equipment, cost for oil production increases relatively, eliminate and slow down the corrosion of sucker rod and abrasion becomes the major subjects of sucker rod research and development, manufacture there is better antiseptic property, urgent needs that wear resisting property, sucker rod that tensile strength is high also become oil recovery industry.

Summary of the invention

For above-mentioned technical problem, the utility model provides a kind of aluminising anti-corrosion pumping bar, quick hot dipping aluminum technology is utilized to form the alitizing layer of metallurgical binding on sucker rod surface, can effectively prevent the various corrosive liquids in well liquid, gas to the corrosion of sucker rod, thus reduce corrosion failure, reduce cost for oil production, it is to increase the production efficiency of oil well.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of aluminising anti-corrosion pumping bar, comprises the body of rod, is provided with aluminising preservative coat outside the described body of rod, and aluminising preservative coat comprises pure aluminium skin and ferro-aluminium internal layer.

As the further restriction of technique scheme, the described outer field thickness of pure aluminium is 0.01mm～1mm, and ferro-aluminium internal layer thickness is 0.01mm～1mm.

The beneficial effects of the utility model are according to known to describing of such scheme:

Above-mentioned aluminising anti-corrosion pumping bar utilizes quick hot dipping aluminum technology to form the alitizing layer of metallurgical binding on sucker rod surface, can effectively prevent the corrosive deposit in well liquid to the corrosion of sucker rod, thus reduce corrosion failure; Meanwhile, this aluminising preservative coat not only has excellent anti-corrosion, resistance toheat, also has higher wear resistance, and the production efficiency of reduction cost for oil production, raising oil well is had economic benefit and social benefit widely.

It thus is seen that the utility model compared with prior art, has substantive distinguishing features and progress.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

In figure: 1, the body of rod, 2, pure aluminium outer, 3, ferro-aluminium internal layer.

Embodiment

For clearly demonstrating technology feature of the present utility model, below by specific embodiment and by reference to the accompanying drawings the utility model scheme is described in detail.

The aluminising anti-corrosion pumping bar that the utility model provides, comprises the body of rod, it is characterised in that, it is provided with aluminising preservative coat outside the described body of rod, aluminising preservative coat comprises pure aluminium skin and ferro-aluminium internal layer; Wherein, the described outer field thickness of pure aluminium is 0.01mm～1mm, and ferro-aluminium internal layer thickness is 0.01mm～1mm.

Sucker rod of the present utility model is covered with pure aluminium skin and ferro-aluminium internal layer double layer anticorrosive layer, pure aluminium skin can form compact aluminum oxide film under corrosive medium, can corrosive medium be completely cut off outside steel matrix, reach the effect of protection against corrosion, and pure aluminium skin has autoxidation repair ability, it is ensured that the integrity of pellumina; When pure aluminium skin has consumed, ferro-aluminium internal layer also can generate the compound of spinel structure in the process of oxidation, this kind of compound stacking density is big, without room, zero defect, not only can stop oxidation, and the atom stoping corrosive medium contacts with iron atom, corrosion product can not be formed, thus prevent sucker rod from corroding.

In above-described embodiment, better embodiment of the present utility model is described, however, be evident that under invention of the present utility model is conceived, still can make a lot of change. At this, it should illustrate, any change made under invention of the present utility model is conceived all will fall in protection domain of the present utility model.

Claims

1. an aluminising anti-corrosion pumping bar, comprises the body of rod, it is characterised in that, it is provided with aluminising preservative coat outside the described body of rod, aluminising preservative coat comprises pure aluminium skin and ferro-aluminium internal layer.

2. aluminising anti-corrosion pumping bar according to claim 1, it is characterised in that, the described outer field thickness of pure aluminium is 0.01mm～1mm, and ferro-aluminium internal layer thickness is 0.01mm～1mm.