关键词:  出砂油藏, 先期防砂, 射孔参数, 套损机理, 预防对策

Abstract:  Since 2010, many casing program optimization measures are implemented to prevent casing damage at Gangxi oilfield and effectively reduce the casing damage caused by hydration of mudstone. Through data research, sand production is found to be the major cause of casing damage in Gangxi oilfield wells after 2010. By well production data and mechanics mechanics investigation, many prevention measures are proposed. Firstly, pre-completion sand control should be conducted. For some oil wells difficult to conduct sand control measures, optimizing perforation parameters and adding casing wall thickness along with reasonably controlling the producing pressure drop should be conducted. With all above mentioned measures, the well life and oilfield development results will be improved.

Key words:  , sand reservoir, pre-completion sand control, perforation parameter, casing damage mechanism, prevention measures