GEOLOGICAL AND RESERVOIR FLOW MODELS ARE USED TO OPTIMIZE DEVELOPMENT OF KURMANAEVSKOYE FIELD’S CARBONATE RESERVOIRS
Nifantov V.I., Melnikova E.V., Pischukhin V.M., Kuznetsov S.A., Makarev O.V.
DOI https://doi.org/10.25689/NP.2019.1.141-155
Abstract
The process of drilling and fastening wells is very complex in engineering terms, as it is accompanied by the destruction of rocks of different properties. The stability of rocks is sharply reduced in the presence of different types of water. In clay rocks and salts, the processes of moistening, swelling and dispersion play a significant role, causing a weakening of the structural bonds between the rock particles. In order to prevent complications during the well wiring, it is necessary to study the causes of changes in the properties of rocks in various geological conditions, as well as to determine the nature of the violation of the stability of the wellbore drilled in terrigenous rocks containing clay inclusions, as well as in salt and inter-salt deposits. The results of studies of changes in the properties of clay rocks in the formation of the wellbore during drilling. Experimental data on the determination of mechanical properties of different lithotypes of terrigenous clay rocks at different depths are systematized. An important conclusion that follows from the constructed dependences: with a depth of more than 1500 m, the compressive strength of clay rocks (σsj) becomes less than the skeletal stresses in the range of anomalous reservoir pressure (abnormally low – ALRP and abnormally high – AHRP) from 0.25≤Ka<1.0 (ALRP), and from depths of 3000 m and more – in the range of 1.0
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Authors
Nifantov V.I., Chief researcher of the underground gas storage Center, doctor of technical Sciences, Academician of the Russian Academy of natural Sciences in the section of oil and gas, Limited Liability Company «Research Institute of Natural Gas and Gas Technologies - Gazprom VNIIGAZ» (LLC «Gazprom VNIIGAZ»), Moscow, Russian Federation E-mail: v_pischukhin@vniigaz.gazprom.ru
Melnikova E.V., researcher at the laboratory of design and analysis of gas condensate and oil and gas fields development at the field development Center, Limited Liability Company «Research Institute of Natural Gas and Gas Technologies -Gazprom VNIIGAZ» (LLC «Gazprom VNIIGAZ»), Moscow, Russian Federation E-mail: v_pischukhin@vniigaz.gazprom.ru
Pischukhin V.M., a leading researcher at the Department of experimental research experimental center, candidate of technical Sciences, academician of the international Academy of Sciences of applied radioelecronics, corresponding Member of the Academy of natural Sciences in the section of oil and gas, Limited Liability Company «Research Institute of Natural Gas and Gas Technologies -Gazprom VNIIGAZ» (LLC «Gazprom VNIIGAZ»), Moscow, Russian Federation E-mail: v_pischukhin@vniigaz.gazprom.ru
Kuznetsov S.A., Deputy head of the laboratory of technological design of underground gas storage center UGS, Limited Liability Company «Research Institute of Natural Gas and Gas Technologies -Gazprom VNIIGAZ» (LLC «Gazprom VNIIGAZ»), Moscow, Russian Federation E-mail: v_pischukhin@vniigaz.gazprom.ru
Makarev O.V., Deputy head of Directorate, Public joint-stock company «Gazprom» (PJSC «Gazprom»), Moscow, Russian Federation E-mail: O.Makarev@adm.gazprom.ru
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