Classification and Analysis of Fracturing Interference in Yiongxiong Ling Shale Oil Stacked Completions

The breakthrough in well CP1, which located in Yingxiong Ling area, Q-aidam basin, gained high production, however 1H platform, the same geological tank as CP1 did not meet the expectation, and the interference between platform wells influenced the production. In order to figure out the reason of interference and its influence, this article divided the platform wells into infill well and once well, and did the research by the difference of oil pressure to analyze the influence between platform and CP1 and influence between platform wells, giving the classification of interference. According to the platform well location and tracer data, identifying the scope of the interference and dividing the types, which mainly consist of fluid-connection and stress-response. The results showed that appropriate interference have little effect on platform well production; the once wells volume fracturing are the key of transformation; the fluid connectivity of infill wells caused the limited transformation in new wells, the water saturation of fractured well is ascend and is no easy to decline.