The recoverability analysis and development strategies research in deep tight condensate gas reservoir

There are a series of low-permeability deep condensate gas-reservoirs in Dongpu depression.Although this category of gas-reservoirs are hard to be developed because of their low productivity and economic benefit,there are still some relative high-quality gas reserves in somewhere of the reservoirs which can be produced efficiently.In view of this characteristic,this paper puts forward that the effective way to exploit this kind of reservoirs is to determine the quantity and distribution of the relative high-quality reserves in these gas-reservoirs and to develop these reserves first.Based on B55 Block as a typical example,the standard on how to classify the available reserve of this category of gas reservoirs is established with the parameter of energy storage coefficient and the method of correlation analysis on the basis of economic boundaries study.According to this standard,this paper assesses the available reserves in B55 block and put forward the corresponding development technology strategies which make the economic development route for such gas reservoir.