岩屑处理装置在DSJ300-1海洋钻井平台上的应用

Application of the Cuttings Treatment Device in the DSJ300-1 Offshore Drilling Platform

采用油基钻井液钻井产生的岩屑不但会造成钻井液的损失,而且随着井深的加大,大量岩屑若不加处理而直接排放,会破坏海洋生态环境,若直接收集又会给平台的岩屑清理造成很大的工作量。针对该问题,DSJ300-1海洋钻井平台采用了一套岩屑处理装置来处理钻井岩屑。该装置主要由岩屑甩干机、螺旋输送机、钻井液驳运泵、液体收集罐和液位自控控制装置等组成,它与振动筛、一体机、离心机等其他钻井液净化设备相比较,能减小岩屑的含油质量分数约10%,使其不大于5%。该装置具有液位自控控制功能,能有效减少现场操作人员的工作量,延长钻井液驳运泵的使用寿命。

The cuttings produced in the process of drilling which adopts oil-based drilling fluid will cause loss of drilling fluid. Moreover, with the increase in well depth large amounts of cuttings produced in drilling will do harm to the marine ecological environment if they are not treated but discharged directly. The workload of cuttings removal from the platform will increase remarkably if they are gathered directly. In light of the problem the DSJ300 - 1 off-shore drilling platform adopted a set of cuttings treatment device to handle drilling cuttings. The device mainly consists of cuttings drying machine, spiral conveyor, drilling fluid transfer pump, liquid gathering tank and liquid level self-control device. Compared with other drilling fluid purification equipments such as shale shaker, all-in-one machine and centrifuge, it can reduce oil content in cuttings by about 10% and make it no more than 5%. It can effectively reduce the workload of field operators and lengthen the service life of drilling fluid transfer pump.