EXPERIMENTAL STUDY OF FORMATION WATER PROPERTIES AT HIGHT PRESSURE FOR ABNORMALLY-HIGH-TEMPERATURE CONDENSATE GAS RESERVOIR

Formation water properties are fundamental parameters needed in developing such reservoirs. In the present work, an experimental method is proposed for determination of these properties. Using this method, tests were carried out on the formation water from wells of Banshen?7 and Banshen?8 under high pressures. The results indicate that both the dissolved gas content in the formation water and the saturation water content in the condensate gas are high for these two wells, which must be taken into consideration in reserve evaluation and development planning. In addition, the water content in the condensate gas in Well Banshen?7 has reached saturation level and thus free water may exist in the formation; on the other hand, water content in that in Well Banshen?8 is not in saturation and thus there is no free water exsisting in the formation. These results provide valuable reference data for development planning and have been proved valid in development production.