银额盆地哈日凹陷异常高压储层测试压裂的探究与实践OACSTPCD

Multiple exploration wells in the Hari Sag of the Yingen-Ejinaqi Basin have obtained industrial oil and gas flow,but the oil and gas geological conditions in the Sag are extremely complex.The drilled reservoirs are deeply buried and have complex lithology,mainly manifested by high formation pressure,dense lithology,and high compressive strength.At the same time,the area is in the early stage of exploration,and there is no adjacent well fracturing data that can be used as a reference for reservoirs with the same burial depth,which seriously restricts the subsequent fracturing process and exploration work.To this end,the concept of test fracturing was proposed.By analyzing the pressure drop data of YH6 well during test fracturing,parameters such as reservoir closure pressure,closure time,geostress,and formation pore pressure were obtained to design and optimize the main fracturing scheme,providing technical sup-port and ensuring the successful implementation of the main fracturing.This study is of great significance for the fracturing and oil tes-ting operations of high-pressure and high stress reservoirs in the Yingen-Ejinaqi Basin,as well as the subsequent exploration and devel-opment of deep oil and gas.