Development Technology Research About Gas Reservoir Of The Structural Belt Of Area Liang

Aim at the problems about Complex geological conditions of the gas reservoir,quick decline of gas well production and water production of gas reservoir in the structural belt of area Liang,based on Fluid percolation mechanics,Gas Reservoir Engineering and gas well production system analysis,comprehensively applies the materials of geology,test,production system and site construction,uses Gas Reservoir Engineering and the development technology of complex gas reservoir as theoretical guidance,traces the latest research results in discharge water and producing gas about the gas reservoir with water at present,widely uses computer technology and engineering analysis method,deepens the recognition in the study area,comes up with the corresponding measures in exploiting.According to the Chinese continental shale kind of hydrocarbon source rocks organic matter abundance and geochemistry evaluation standard,distinguishes mudstone layers by organic matter abundance,organic type and Organic matter maturity.Through analysing the chromatographic characteristic parameters of hydrocarbon source rocks in the structural belt of area Liang,confirms the oil included in this section core comes from double anode shale hydrocarbon source rocks;Using the characteristics of Carbon isotope to compare oil source,founds the gas in shallow strata is the mix gas source consisted by coal-derived gas and the gas of oil type;Surveying the change of the pore fluid pressure and pressure coefficient,discovers the oil and gas of hydrocarbon source rocks are mainly rowed out through tiny cracks by abnormal pressure,After entering into the reservoir stratum or transport layer,the oil and gas will be transported secondly to the high quality reservoirs by the buoyancy drive under the control of structure and sand body.Through anatomizing the thirty sixth well,founds The beneficial structural position,the faults of the hydrocarbon source rock and reasonable proportion between sand and soil are key factors in hydrocarbon accumulation.the relationship between water and gas,comply with the conventional gravity differentiation principle,Using fluid percolation mechanics and gas reservoir engineering method to analysis production system of gas well,comes up with two main features of producing water in the area,the one is the producing water after production;the other is producing slightly water but will be water extraction after a certain period of time and Water volume is big.Based on the above theory,establishes three different diagram of gas reservoir:Anticline type gas reservoir,Multilayer type gas reservoir and Single inclined gas reservoir,and puts forward the corresponding measures to control water production.Through thesis Research,deepens the recognition of this kind of Oil reservoir geology characteristics,not only provides the scientific basis for improving the development effect of gas reservoir with water,but also come up with a suit of Research ideas and matching technology for the different characteristics of gas reservoir models,provides experience and methods for researching and development of the same kind of gas reservoir.