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熱熔浸稀土鋁合金油套管(注水井管)及抽油桿
Hot-Dipped Rare Earth Aluminum Oil Pipe (Water Tubing) and Oil Pipe Rod


石油開采所用的油套管,注水井管,抽油桿,集輸管的腐蝕破壞問題是世界性難題,長期以來,國內外都致力于開發防腐性能好,使用壽命長的安全可靠產品,其研發路線分為兩條:一是采用高品質合金鋼;二是對其表面進行防腐處理,;前者成本太高,后者存在很多缺陷,鑒于此,我公司利用《大型鋼件熱熔浸鋁方法》的專利技術,研發出熱熔浸稀土鋁合金油套管,注水井管,集輸管,抽油桿等系列產品。其技術和性能有如下特點:

一、技術上采用二浴法工藝:通過鹽浴對鋼基體表面進行充分凈化和浸潤,使鋼件達到和鋁液相近的溫度,提出后迅速置入稀土鋁液中,使其鋁鐵合金層更致密,鋁層更均勻,徹底避免了針孔漏鍍。另外,根據犧牲陽極保護陰極的原理,我們將鋼管浸鋁后再進行絲扣加工,以保證絲扣質量要求標準。對抽油桿,我采取先浸鋁,后調質的工藝方法,即將抽油桿的半成品進行熱熔浸鋁,然后進行絲扣加工和調質處理,這樣即保證了產品的力學性能,又保證了產品的耐腐蝕性能。

二、防腐性能:本產品在油氣井腐蝕環境中具有極強的耐蝕性能,致密、完整、穩定的AI2O3氧化膜對電化學腐蝕具有很強的陰、陽極阻滯作用,在高溫高壓,特別是CO2、H2S、CI–共存環境中有著很高的耐蝕性能,可避免硫化物應力開裂和氫致開裂。另外,對細菌微生物的腐蝕也有著很好的防垢作用。

正因為以上原因,本產品與高品質合金管及其它防腐方法的鋼管有著極好的性能價格比,目前在大港油田采油三廠,遼河油田已經開始使用,效果很好。


Oil Pipe, Water Tubing, Oil Pumping Rod and Piping Line corrosion damages are the global problem in the oil industry. For a long time, at home and abroad , industry experts are committed to the development of good corrosion resistance, long life-span, safe and reliable product. The R & D is divided into two directions: one is made of high-quality alloy steel; the second is its surface Anti-corrosion treatment. The former is too costly. In the later, there are many defects. In view of this, Anshan Yin Ma uses the "Large-scale steel Hot-Dipped Aluminum" patented technology, developed the Rare-Earth Hot-Dipped Aluminum Oil casing pipe, Water Tube, Oil Flow pipe, Oil Pumping Rod and series of products. Its technical and performance characteristics are as follows:

I. The process is “Dual-Bath Technology”: The steel substrate is cleaned and soften by the hot Salt-Bath; to raise the substrate temperature close to the Aluminum molten temperature. After the Salt-Bath, the steel substrate is removed quickly into the molten Aluminum. This process ensure the Aluminum-Ferrous Alloy more densely combined, more evenly coated and completely avoid the pin-hole formation.

In addition, according to the anode cathodic protection principles, the pipe will be threaded to ensure the quality requirements of the threading standard. On the Oil Pumping Rod, it is first dipped in Aluminum, then special process for quality. This is to hot-dip the semi-finished rod in Aluminum, then thread processing and conditioning treatment. This guarantees the product mechanical properties and guarantees product corrosion resistance factor.

II. Anti-corrosion property: This product operates in oil and gas wells of highly corrosive environments.It  exhibits great corrosion resistance, compact, complete and stable oxide AI2O3 film has resistance to the electro-chemical corrosion. It has a strong cathode and anode blockade at high temperature and pressure. It is especially evidence in CO2, H2S, CI- coexistence environment with a high corrosion resistance. It can avoid sulfide stress cracking and hydrogen induced cracking. In addition, under the bacterial microbial corrosion and scale it also has a very good effect.

Because of the above reasons, the product compared with high quality alloy steel pipe and other anti-corrosion method has an excellent price-performance ratio. Currently, Dagang Oilfield #3 Plant and Liao He Oil field, had begun to use with excellent results.

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