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The book presents an integrated approach to studying the
geomechanical processes occurring in oil and gas-bearing formations
during their development. It discusses the choice of a model that
takes into account the basic properties of rocks; experiments to
find model parameters; numerical modeling; and direct physical
modeling of deformation and filtration processes in reservoir and
host rocks. Taking into account features of rock behavior, such as
anisotropy of the mechanical properties of rocks during
elastoplastic deformation; dependence of permeability on the total
stress tensor; the contribution of the filtration flow to the
formation stress state; and the influence of tangential as well as
normal stresses on the transition to inelastic deformation, it
demonstrates how the presented approach allows the practical
problems of increasing the productivity of wells, oil recovery, and
ensuring the stability of wellbores to be solved. The book is
intended for specialists, including geoengineers working in the oil
and gas sector, teachers, graduate students and students, as well
as all those interested in scientific and technological
developments to meet the enormous demand for raw materials and
energy.
This book is devoted to the most important and urgent problems
arising during the operation of underground gas storage facilities
(UGS) and associated with the destruction of the reservoir and sand
production into the wells. UGS facilities play a special role in
ensuring high reliability of stable and guaranteed gas supplies to
consumers. However, despite many years of experience in UGS well
operation, there is still no sufficiently substantiated
geomechanical model of reservoir failure and a mathematical
description of the processes occurring in the reservoir-well
system, taking into account the peculiarities of the mechanical
behavior of reservoir rocks during cyclic injection and extraction
of gas. As a result, there are no reliable criteria for
establishing a rational regime for the operation of an UGS wells in
conditions of a possible destruction of reservoir rocks. Further
development of underground gas storage direction requires the
introduction of innovative technologies that can be used both in
the design of new UGS facilities and to extend the safe and
efficient operation of existing underground gas storage facilities.
To solve these problems, the most promising technologies, taking
into account their efficiency, relatively low cost and
environmental safety, are those based on the geomechanical
approach. The book is addressed to specialists in the development
and operation of underground gas storage facilities, as well as
specialists in geomechanics of oil and gas fields. It can be useful
for students and graduate students studying in the speciality
"Development of oil and gas fields".
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