Application of Hydraulic Sand Fracturing to Sulige Gasfield

In Sulige gasfield, there are many technical problems existing in hydraulic sand fracturing, such as fracturing-fluid optimization, proppant selection, program-parameter determination and liquid flowback. In this paper, one problem which emphasizes the poor effect of sand fracturing on the gasfield is fully studied; the fracturing-fluid formula, proppant, and optimized fluid configuration program, which are suitable to the block, have been optimized; and the thoughts on hydraulic fracturing, including moderate scale, small flow rate, long-fracture building, reasonable sand concentration, and finite conductivity, are put forward by FroPt2007 software. Through a field test, the production in both Tao 7-8-5 and Tao 7-9-14 wells has greatly increased and an obvious effect is achieved.