Application of 3D Geological Modeling Technology for Horizontal Well Based on Data Fusion of Multiple Sources

Abstract

AbstractThe southeast Sulige gas field is a typical tight sandstone gas reservoir, whose fluvial facies sand body changes rapidly and the spatial distribution is complex. The contact mode of single sand body is mainly formed by lateral aggradation. Practice shows that through the key problem of horizontal well, the output of single well can be increased. Less wells and more production can be realized. In recent years, geological, logging, 3D seismic and other multi-source data are combined to constrain 3D geological modeling in southeast Sulige gas field, so as to improve the prediction accuracy of sand bodies between wells. The establishment of high precision 3D geological model can dissect the spatial superposition relationship and distribution characteristics of sand bodies, and quantitatively characterize the sand bodies, which can further guide the deployment of horizontal wells, trajectory optimization and real-time guidance while drilling. In the southeast Sulige gas field, using high-precision three position geological modeling to deploy ultra long horizontal section wells in resource overlapping area can effectively improve single well production, reduce unit production investment and save land borrowing. Meanwhile, the trajectory smoothness of completed horizontal wells is greatly improved compared with that in the past, and the drilling encounter rate of reservoir is also increased by 5%–10%. Thus, the well location deployment with quality and quantity can be realized, and the drilling speed and quality can be improved and drilling speed is increased to improve quality and benefit. It provides a favorable guarantee for the development of horizontal wells in tight gas reservoirs.KeywordsSulige gas fieldTight sandstoneHorizontal wellLess well and more production3D geological modeling