The advanced Big Diameter Infinity Completion Technology was employed in the operation. By utilizing dissolvable bridge plug, perforation joint operation and casing fracturing, we achieved the big diameter of the casing and avoided the milling of bridge plug after the fracturing, bringing reduced operational risks and completion costs as well as improved operational efficiency. We combined a mix injection of slick water, base fluid and cross-linked gel with the multi-particle support technology in the operation. In this way, the injection could connect to the natural micro-cracks and form a complex crack network, while clearing the flow channels and increasing the productivity of a single well after the operation. In addition, we set advanced underground microseismic monitoring and interpretation tools in the adjacent wells of the target to ensure real-time monitoring. This helped adjust and optimize the operation design timely, facilitate a proper fracturing strike and shape trends, and maximize productivity after fracturing.