目前稠油井的数量在不断增加,预计至1990年产量将达到1000万吨,占全国石油总产量的十分之一左右。稠油含量有大量胶质、沥清,属于非牛顿液体,粘度高,流动性差。当前我国大多是用高压向井下注入高温干燥的过热蒸气来开采稠油。高温高压的过热蒸气将使井下管柱产生蠕动,且腐蚀性较大,管柱落井时有发生。如何打捞稠油井中的落鱼,这是一个 At present, the number of heavy oil wells is continuously increasing. It is estimated that by 1990, the output will reach 10 million tons, accounting for about one tenth of the total output of the country. Heavy oil content of a large number of gum, bitumen, belonging to non-Newtonian liquid, high viscosity, poor liquidity. At present, most of our country use high pressure to inject downhole high temperature and dry superheated steam to produce heavy oil. High temperature and pressure of superheated steam will cause the underground pipe string to produce peristalsis, and the corrosiveness is big, the pipe string goes down from time to time have occurred. How to salvage the heavy oil wells in the fish, this is one