Sham Tseng Low Damage Water-based Fracturing Fluid Technology Research And Application

The item investigates the fracturing fluid system using in deep well fracturing in Xinjiang oil field, and optimizes suitable aqueous fracturing fluid system and fracturing fluid additive. By lucubrating the different kinds of injury mechanism of fracturing fluid, determine low injury, low friction and low polymer concentration (three low) as the optimization objective to improve single well productive capacity, carry out intellectualization subsection for fracturing fluid by applying fracturing temperature field, flow field model and calculation software, optimize "changing component" fracturing fluid dispensation system for crack segment of different temperature; decrease the fracturing fluid injury and increase the crack conductivity ability by using crack forcing close and quickly flow back technologies; cross-linking time can adjust to different well depth and reduce the construction friction by using advanced cross-linking technique; clear away filter cake injury and remain glue impact to reach at thorough gel-out by using capsule gel-out technique, sub-junction gel-out technique and automatism gel-out technique; investigate the actual injury degree of fracturing fluid to reservoir by using dynamic analog device which can simulate fracturing fluid flowing and injury. It makes fissure occupation in reason and at the same time guarantee the construction success by using multistage ladder sand-franc technique. The optimal fracturing fluid system applies in 14 wells such as MoBei, BaQu and ShiNan21, and procures favorable production response.