Well pattern and space deployment of horizontal well to prevent fracturing channeling in fractured reservoir

摘要

The oil development of the Triassic Yanchang Formation Chang8 section of the fractured reservoir in the south of Ordos Basin Tianhuan Syncline has used horizontal determinant deployment well pattern. It is common for fracturing wells communicate with neighbouring wells, and leads to substantial decline in production capacity in the area. In this paper, apply related theory and statistical methods, qualitatively and quantitatively determine and describe the geological characteristics between wells. Then analyze the relationship between well pattern and well space and fracturing channeling, simulating the relationship between well space and capacity, determine the optimal well space. Finally, a scheme of well pattern and well space deployment for prevention fracturing channeling in fractured reservoir is proposed.