Research About Productivity Evaluation Method In The Glutenite Reservoir

The productivity evaluation plays a very important role in the process of oilfield exploration and development.On the one hand,it provides some basic data which is an indispensable part of the oil field development.On the other hand,the productivity evaluation can provide technical guidance for the development plan adjustment and optimization.The reservoir characteristics of the Yong1 glutenite reservoir are analyzed in both microscopic and macroscopic aspects respectively.In terms of microcosm,the study mainly uses the materials of micro-pore structure,throat structure,capillary force,and etc to understand the reservoir's seepage ability.In terms of macrocosm,we figure out the permeability and thickness distribution and use it as the foundation to create the mathematical productivity model by analyzing the counter map and the stratigraphic profiling map.The mathematical model is established to obtain the productivity of strong heterogeneous reservoir.We get the productivity expression by taking both the threshold pressure gradient and heterogeneous distribution into consideration.Many factors are studied and a lot of concrete influence laws are given in the article.The steady state of successive substitution method is used here to figure out the solution of the disconnected elastic reservoir productivity.Three typical connecting models are set up and productivity change characteristics are given in this study.The solution of productivity for the vertical fracturing wells is studied by physical partitioning method which gives the productivity along with the change of water cut.