压裂双线性流文献.docVIP

Texas AM University Department of Petroleum Engineering Reservoir Modeling Group Selected Papers On Occurrence of Bilinear Flow Regime REFERENCE SUMMARY OF SELECTED PAPERS ON OCCURRENCE OF BILINEAR FLOW REGIME Prepared by Mohamed H. El-Ahmady Date : 3/25/01 (CS 78) Cinco-Ley, H., and Samaniego, F.,: Transient Pressure Analysis for Fractured Wells” SPE 7490, Presented at the SPE 53rd Annual Fall Meeting, Houston, October 1-3, 1978 This paper presents the first paper that ever introduced the idea of bilinear flow. It was shown for first time that a plot of Pwf vs. yields a straight line whose slope depends upon the group where and are the height, width and permeability of the fracture respectively. This was introduced as part of a graphical method provided to analyze pressure data, for cases of wells intersecting a vertical fracture of low and intermediate conductivities at small values of time. The limitations of this method is provided and a new analytical solution is presented. The authors conclude that the bilinear flow model is appropriate for analyzing pressure data whenever the formation permeability is low and the fracture length is large, because under these conditions, the dimensionless fracture conductivity and the dimensionless time, corresponding to practical values of real time are within the range of application of this technique. Moreover, the authors present the limitations and advantages for the methods provided at that time in the literature to analyze transient pressure data of fractured wells. (CS 81) Cinco-Ley, H., and Samaniego, F.,: Transient Pressure Analysis: Finite Conductivity Fracture Case Versus Damaged Fracture Case” SPE 10179, Presented at the SPE 58th Annual Fall Meeting, Dallas, Texas, October 5-7, 1981 This paper presents the basic pressure behavior differences between a finite conductivity fracture and different types of damaged fractures. The authors show that there are significant differences in transient pressure be