A NEWMETHOD FOR FORECASTING DEVELOPMENT INDEX OF GAS RESERVOIR

Abstract

Abstract: Systematic well test data of gas well showed that indicative curve is a straight line when bottomhole pressure exceeds a certain value, but a quadratic curve when bottomhole pressure is less than this value.Based on above-mentioned and performance data of gas reservoir, the method for forecasting development indexes of gas reservoir was derived.It can be applied in sandstone and conglomerate gas reservoir with midium-low permeability and recovery factor of more than 5%, which performed successfully in Upper Wuerhe gas-cap gas reservoir in area Well Ke 75, south District No.5 in Karamay oilfield.Compared with numerical simulation, it is simpler and has more reliable result.

Key words: Gas Reservoir, Development Index, Forecast, Production, Formation Pressure

Wang Bin, Tang Chengfeng. A NEWMETHOD FOR FORECASTING DEVELOPMENT INDEX OF GAS RESERVOIR[J]. Xinjiang Petroleum Geology, 1998, 19(6): 515-517.

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A NEWMETHOD FOR FORECASTING DEVELOPMENT INDEX OF GAS RESERVOIR

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