Based on the low permeability features of volcanic trachyte, the phenomena of intermittent flow and water breakthrough are showed in the process of production from the aspects of the lithologic character, oil layer distribution, pores and fractures, pore radius and relative permeability curve.

In this paper, a numerical well test method is presented to study the influnce of different relative permeability curves on the well test curve, PEBI grid is used to discretize control equations of oil-water-phase flow in FEBI grid, which couples the wellbore storage and skin effect into account.

The relative permeability curve has been measured with simulation oil (refined oil) and gas (nitrogen or air) at room temperature and a lowpressure, both of which are very important parameters for depicting the flow of fluid through porous media in a hydrocarbon reservoir.

The conventional relative permeability curves at the ordinary temperature and low-pressure,and the equilibrium oil-gas relative permeability curve at high pressure and high temperature were determined.

Research on influence factors of relative permeability curve in polymer flooding;

Combination application of waterflooding curve and relative permeability curve to calculate the geologic reserves of different typed wells;

Calculation method of relative permeability curve in low permeability reservoir;

Wettability affects relative permeability curves because it is a major factor controlling the location, flow, and spatial distribution of fluids in the reservoirs.

Based on the analysis of the relative permeability curves in Sa-zhong area,the characteristics of these curves have been given in this paper,it includes the conformation of curves,the interval of water saturation between which oil and water can both flow,water saturation at isopotal point.