Pressure transient response in deep-seated geothermal stress-sensitive fissured composite gas reservoir;

By investigating and summarizing the classical Nolte G function method and studying the special features of the fractures in the fractured formation, the pressure-decline curve analysis models for the fractured reservoirs were established.

The fractured reservoirs are the reservoirs whose major reservoir space and influent tunnel is composed of the fractures and dissolved caves, dissolved pores connected by fractures.

Because of the complexity and specificity of the reservoir space physical nature of fracture reservoir,the effect of imbibition controls the water flooding the dynamic of exploitation and the effect of exploitation.

The fluid flow among the fluids was not considered in fracture reservoir in the past, and only the source and sink was considered in the fluid exchange between the fracture and matrix.

Experimental study on the hydroscopicity of fracture reservoir;

In order to meet the demand of the fracturing fluid used in Anpeng Oilfield which is low porosity, poor permeability, high temperature and plentiful fracture reservoir, experiment temperature for assessing fracturing fluid has been determined.

Based on the characteristics of fracture reservoir in Zhongyuan Oilfield, this paper analysis the mechanism of fracturing fluid loss additive, studies the composition, preparation method and property of HL - 05 fluid loss additive of oil - soluble.