钻井固控环保一体化装备的研制与应用

摘要

In view of the large total amount of water-based drilling waste and the low recycling rate,considering the actual situation in the Bohai Bay oil field,the integrated design of drilling waste "zero discharge" disposal while drilling and solid control system forms a equipment featuring modularization,standardization and skid mounted solid control-environmental protection integration.The overall layout,processing flow and main equipment configuration of the integrated equipment are briefly described.The four field applications in Jizhong Oilfield are introduced in detail.The application results show that the two-stage purifying process of "shale shaking + centrifuge"can effectively reduce the drilling cost.The cutting drier and the drying screen can desiccate the debris and realize "zero discharge" of drilling fluid.The "flocculation dewatering + centrifuge" couldprovide effective solid-liquid separation of waste drilling fluid.Finally,according to the problems existing in the field application,solutions and suggestions are put forward.%针对水基钻井废弃物总量大及回收利用率低等问题,结合渤海湾油田现场实际情况,将钻井废弃物不落地随钻处理与固控系统进行一体化设计,形成模块化、橇装固控环保一体化装备.简述了该一体化装备的总体布局、处理流程以及主要设备配置情况,详细介绍了其在冀中油田的4次现场试验情况.试验结果证明:“振动筛+离心机”两级净化流程有效降低了钻井成本,岩屑甩干机和干燥筛可对岩屑脱干并实现钻井液不落地,“絮凝脱水+离心机”能对废弃钻井液进行有效固液分离.最后针对现场应用中存在的问题,提出了解决方法和建议.