Research On Multiple Hydraulic Fracturing Of Horizontal Well In Shun9 Area

Low permeability reservoir is the main source of oil and gas resources in China at present, and also widely Distribution in the world. How efficient development of low permeability oil and gas reservoirs is an important topic in the development of oil and gas fields at present. Low permeability reservoir with low permeability, high flow resistance, Connectivity between the pore is poor, The natural productivity is low in production wells. The domestic and foreign development practice shows that horizontal well has large contact area between wellbore and reservoir, high single well Productivity, is the efficient development of developing low permeability, thin reservoir of oil and gas reservoirs. Fractured horizontal well combines the advantages of horizontal well’s large contact area between wellbore and reservoir and fractured well’s low flow resistance, has become an important technology for low permeability reservoir development. Horizontal well fracturing techniques was able to exploit low permeability, low permeability reservoir efficiently. A lot of oil field used the technology to explored heterogeneity of oil reservoir and low capacity reservoir, have achieved good results.Shun 9 wells block is low porosity and low permeability reservoir, has long horizontal barefoot interval. Through analysis of the reservoir and crustal stress we believed that horizontal well fracturing techniques can improve the oil production in the region. This paper mainly studies the process of this area’s fractured horizontal well from the following three aspects.1) Analysis of the Percolation Mechanism of fractured horizontal well, and study the effect factors of fractured horizontal well’s production capacity. Revise and improve the former fractured horizontal well production formula. Prediction of fracturing horizontal well productivity and optimize the fracture parameters of Shun9CH.2) According to the reservoir characteristics, choose the appropriate way of Multiple Hydraulic Fracturing and design the fracturing scheme of Shun9CH3) Through the stress analysis showed that reservoir has high fracture pressure, small difference stress, need to control the fracture height. Analysis of the effect factors of fracture height based on fracproPT, showed that the difference stress, construction displacement, and fracturing fluid viscosity are the main factors. Combine the construction parameters and artificial barrier technology can control the fracture height.This study provides technical support for exploration and development wells in the area, at the same time,it also has positive significance for horizontal well fracturing of the domestic and foreign similar reservoir.