Improving inflow profile of horizontal production wells by optimization liner

Key words:  horizontal well  liner  pressure drawdown profile  flow rate profile  bottom water reservoir

Abstract:

Aimed to the different flow rate contribution problem caused by pressure drawdown at the hell segment in horizontal well, a calculation model of pressure drawdown profile was proposed based on the Z. E. Su model considering the effect of liner on the flow of horizontal production section. The inflow performance relationship and the flow rate distribution in horizontal section were studied. The results indicate that the profiles of pressure drawdown and flow rate are improved remarkably by using liner. For horizontal section, there exists a reasonable liner length and liner diameter. For the given example, the optimum liner length is about 3/10 of the length of the horizontal section and the optimum liner diameter is about 0. 0889 m.