Application of Infinite Stage Sliding Sleeve Segmented Fracturing Technology in Shale Oil Reservoirs

In order to explore the precise segmented fracturing technology for shale oil reservoirs, the infinite stage sliding sleeve segmented fracturing technology was introduced. This technology involves cementing the well with an infinite stage sliding sleeve and casing, and then opening the infinite stage sliding sleeve one by one during the fracturing process by inputting the sliding sleeve key. This technology conducted sand fracturing on 26 layers of shale oil reservoirs in Shulu Depression, with smooth opening of the sliding sleeve and no complex accidents such as sand blockage throughout the entire process. The average construction time for each section was 2 h, and a maximum of 4 fracturing sections were completed in a single day. This improved the construction efficiency while achieving precise fracturing stimulation of shale oil reservoirs. The successful implementation of this well provides a new technical approach for the fracturing stimulation of unconventional oil and gas reservoirs in China.