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Corrosion of hydrogen sulfide, carbon dioxide and oxygen ions governance of global oil production is common problem, due to the lack of effective way, oil field downhole corrosion become the important reason for the high production cost. Recently, reporters learned from hunan university by the school and hunan, phil new material technology co., LTD. Jointly developed by tungsten alloy sulfur corrosion proof sucker rod coupling and its product cracked this difficult problem effectively, can reduce the cost of production, a large amount of saving steel.
According to introducing, the eastern part of our country oil field of composite water cut is high, the western oil field H2S, CO2 and CL ˉ content high, on the sulfur corrosion of oil production equipment demand is higher and higher, for a long time, the lack of effective way for oilfield downhole corrosion in the world. Foreign commonly used method is to use expensive nickel-based ?
Appraisal committee thought: the use of tungsten alloy plating developed anti-corrosion sucker rod coupling and can get a very good effect in oilfield extreme corrosion environment, shows the tungsten alloy plating technology can effectively solve the downhole high hydrogen sulfide, carbon dioxide, and the corrosion problem of saturated brine. "And sulfur corrosion resistance of tungsten alloy sucker rod coupling can effectively prolong sucker rod coupling and life in severe corrosive environment, greatly reduce the production cost, technology in the international leading level, the project in oil field application, can save a lot of manpower and material resources, financial resources for our country, especially to a large number of saving steel, make contributions to resource saving and environment protection." In April 2010 in northern uzbekistan mar reach booker oilfield, Kruger oilfield has three ?
(In the 701 tungsten alloy rod underground Wells ) In August 2010 in tarim oilfield hala ha pond HA12-1, HA702, HA701, HA13 well 15500 meters of sucker rod coupling and the well, the well's oil and gas Wells, extremely serious corrosion, the corrosive medium is: the total salinity of 165000 mg/L, 99900 mg/L chloride ions, 4.1% of CO2 and h2s content reached 89903 parts per million, this batch of products still use good 。 |
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