From Iwaki America and Walchem, IWAKI America Inc
Hydraulic fracturing, or fracing, is used to initiate production in lowpermeability
reservoirs and re-stimulate production in older producing wells. In
hydraulic fracing, a fluid is injected into a well at pressures so intense that
the structure 'cracks', or fractures. The fluid, mostly water with additives, is
injected at extreme pressures that cause a fracture in the formation that allows
gas to seep out hopefully into a well casing. Fracing is used both to open up
fractures already present in the formation and create new fractures
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Topics of Interest
Overview Hydraulic fracturing in rocks takes place when the fluid pressure within the rock exceeds the smallest principal stress plus the tensile strength of the rock. This results in tensile...
INTRODUCTION This chapter includes a comparison of fractured vertical wells and horizontal wells. This comparison provides the estimated productivity gains that can be obtained either by stimulating...
Drilling directional or horizontal wells perpendicular to the preferential orientation of natural fractures increases the probability of success in these types of reservoirs. The rationale behind this...
11.1 Introduction Agarwall etal.  and Cinco-Ley and Samaniego  presented a new set of type curves. These type curves were specifically needed for massive hydraulic-fractured (MHF) wells to...
7.1 Introduction Naturally fractured reservoirs are different from conventional (unfrac-tured) reservoirs. They are heterogeneous in type and consist of matrix blocks separated from one another by...