地质导向技术在HY1HF井随钻中的应用

Application of geo-steering technology in HY1HF horizontal well while drilling

地质导向是提高水平井靶窗钻遇率和单井产量的基础。针对花庄地区阜二段页岩层产状变化大、水平段发育断层、井震误差大等难点问题,通过建立地层标志点,开展地层视倾角和靶点垂深预测,以及随钻地层可能出现的4种情况进行分析,指导完成了江苏油田首口页岩油水平井HY1HF井的地质导向工作。HY1HF井水平段靶窗钻遇率达95%,为该井的成功压裂试获工业油流奠定了良好的基础。

Geosteering is the basis for improving target window drilling rate and single well production in horizontal wells.By establishing stratigraphic marker points,the stratum apparent dip angle and the vertical depth of the target point were predicted,along with four possible situations of the formation while drilling were analyzed,to address difficult problems such as the large variety of shale layer occurrence in the second member of the Funing Formation in the Huazhuang area,the development of faults in the horizontal section,and the large well-seismic error.And then the geo-steering work of the first shale oil horizontal well HY1HF was completed in Jiangsu Oilfield.In the horizontal section of well HY1HF,the target window drilling rate reached 95%,providing a solid base for a successful fracturing test to produce industrial oil flow in the well.