Oil Well Testing Handbook
Providing real-life examples and cases, this resource contains the basics of well testing methods as well as all of the latest developments in the field, including testing for horizontal wells.
TABLE OF CONTENTS Oil Well Testing Handbook
Chapter 11: Massive Hydraulic-Fractured Oil Well Behavior Analysis
11.1 Introduction
Agarwall etal. [1] and Cinco-Ley and Samaniego [2] presented a new set of type curves. These type curves were specifically needed for massive hydraulic-fractured (MHF) wells to handle production under constant pressure and constant rate. A fracture is said to have an infinite flow capacity when there is little or no pressure drop along the axis of the fracture. The fracture is said to have a finite flow capacity when there is a significant pressure drop along its axis. Since the distinction between the definitions of fracture flow capacity and formation flow capacity is often confusing, it may be worthwhile to restate the definition of the formation flow capacity.
[1]Agarwall, R. G., Carter, R. D., and Pollock, C. B., "Evaluation and Prediction of Performance of Low-Permeability Gas Wells Stimulated by Massive Hydraulic Fracturing," J. Pet. Tech. (March 1979), 362-372; Trans. AIME, 267.
[2]Cinco-Ley, H., and Samaniego, F., "Transient Pressure Analysis for Finite Conductivity Fracture Case versus Damage Fracture Case," SPE Paper 10179, 1981b.
11.2 Methods of Evaluating MHF Oil Wells
Figure 11-1 illustrates the methods of analyzing MHF wells.
Figure 11-1: Methods of evaluating MHF oil wells
11.3 Analyzing Infinite Flow Capacity Fractures
In a fractured well, where fracture flow capacity is high and wellbore storage and damage effects are minimum, early-time flow should be linear, and early-time pressure data plotted as a function of 
time should fall on a straight line. The slope of this straight line can be used to determine the...
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