关键词: 试井解释, 数学模型, 双重介质, 有界地层, 图版

Abstract: Well test analysis is one of the most important methods of recognizing and evaluating oil and gas reservoirs.One of the main tasks of well test analysis is to define the mathematical models which can describe the percolation flow rules of various complex reservoirs.The well test analysis model of infinite dual porosity reservoirs has been described in detail by the forerunners.But many reservoirs are finite.In order to reflect the situations of real reservoirs,based on the studies of the forerunners and the real boundary conditions of reservoirs,the dual porosity effective radius mathematical models of finite boundary reservoirs are first derived,including closed external boundary and constant pressure condition at external boundary,twelve mathematical models have been obtained.Because of realization of groupization of parameters in the effective radius models,it is very convenient to make type curves for modern well test analysis.Another advantage of these models is that the designing of computer softwares for modern well test analysis has been simplified considerably because of the uniformity of the main model.These mathematical models have supplemented and improved the well test analysis theories they have been used in the fields,and satisfied results were gotten.

Key words: well test tnterpretattan, mathematical madel, dual parasity media, finite reservotr, type curve chart