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全世界的油层估计有40 %需要防砂 ,如果不采取防砂措施 ,出砂将磨损生产管柱的部件 ,并且要经常进行昂贵的修井作业。在有些情况下 ,严重的出砂甚至会导致油井停产。此外 ,井下防砂方法选择不恰当也会使油井产量和效益急剧下降。为了更有效地控制井下出砂 ,国际WeatherfordPetrolineAberdeenbased公司 ,研制出扩张式筛管 (ESS)脱砂技术 ,它是在壳牌石油公司扩张式钻杆专利技术的基础上研制成功的。截止目前 ,该技术在各种现场的应用中成功率为 10 0 % ,其中包括尼日利亚油田首次在水平段推广应用ESS脱砂技术
It is estimated that 40% of the world’s oil reservoirs require sand control. If sand control measures are not taken, the sand will wear away parts of the production string and expensive workover work is required. In some cases, serious sand production can even lead to the shutdown of wells. In addition, the inappropriate choice of sand control methods in the well will result in a sharp drop in well production and benefits. In order to more effectively control the sand production in the well, International Weatherford Petroline Aberdeenbased Company developed the expanded screen (ESS) sand removal technology which was successfully developed based on the proprietary technology of Shell Oil Drill Pipe. To date, the technology has achieved a success rate of 10% in various field applications, including the first time that the Nigerian oilfield has promoted the use of ESS sand removal technology at the horizontal level