中江高庙区块水平井钻井复杂情况预防与处理

Prevention and Treatment of Horizontal Well Drilling Complex in Zhongjiang Gaomiao Block

目前中江高庙区块沙溪庙组水平井施工,已经基本解决区域性井壁垮塌,但是随着二开制井身结构的全面推广,出现了起下钻遇阻、钻头泥包、斜井段摩阻异常高等问题。针对中江高庙区块沙溪庙组二开制水平井施工难点,从地层特征入手,以实钻参数和钻井液性能为依据,分析了引起复杂情况的原因,发现钻井液性能维护不能满足钻井需要,且斜井段键槽是引发水平井复杂情况的主要原因,提出了针对性的预防与处理措施,为今后在该地区的钻井施工提供技术保障。

At present, the horizontal well construction of Shaximiao Formation in Zhonggao Gaomiao block has basically solved the collapse of regional borehole wall, but with the comprehensive promotion of the two open well structure, Paragraph friction abnormal high problem has become a speed blocker.Based on the characteristics of drilling and the performance of drilling fluid, this paper analyzes the causes of the complicated situation and finds out the performance of the drilling fluid.In this paper, Which can not meet the needs of drilling and the keyway in the inclined section is the main reason for the complicated situation of the horizontal well, and puts forward the targeted prevention and treatment measures to provide technical support for drilling construction in the area.