海上钻屑远距离输送技术及数值模拟研究

Research on Long-distance Drilling Cuttings Transportation Technology and Numerical Simulation

为解决“零排放”背景下渤海油田钻屑回收总量大、转移收集困难、高频次吊装等多项难题,满足整井段钻屑随钻实时输送的要求,开发了一种安全高效、适用于渤海油田水基钻屑处置的远距离输送技术。依托曹妃甸A钻井平台“零排放”项目,对拟定管线敷设方案开展了数值模拟研究,分析了钻屑在泵管中的流变性能与压力损失规律,并与现场实测结果作对比,验证了数值模拟方法的可靠性,更好地指导了装置选型和管线敷设方案设计;钻屑远距离输送技术在该平台成功实现了首次应用,高效稳定传输钻屑14 000 m^(3),平均每天减少吊装作业80次,释放钻井平台甲板面积约150 m^(2),保障了钻井作业的高效顺利实施,对“零排放”背景下钻屑的收集与输送具有一定的推广价值和借鉴意义。

This study investigated the development of a long-distance transportation technology for water-based drilling cuttings disposal in the context of“zero emissions”in the Bohai Oilfield.This technology aimed to address the difficulties in collecting and transferring large amounts of drilling cuttings,as well as the frequent lifting operations.This study conducted numerical simulations of the pipeline laying scheme to analyze the rheological properties and pressure loss of drilling cuttings in the pump pipe.The reliability of the numerical simulation method was verified by comparing the results with on-site measurements,which helped guiding the selection of equipment and pipeline layout design.The long-distance transportation technology was successfully applied for the first time on the Caofeidian A drilling platform,enabling the efficient and stable transportation of 14000 m^(3) of drilling cuttings and reducing lifting operations by an average of 80 times per day.This technology also freed up about 150 m^(2)of deck space and ensured the smooth implementation of drilling operations.The results of the study shown promotion value and reference significance for the collection and transportation of drilling cuttings under the background of“zero emissions”.