Лiтсфзична характеристика та особливосгп будови теригенноТ продуктивноi товщi великих родовищ вуглеводыв у нижньопермсько-верхньокам'яновуплычих вщкладах ДДЗ

摘要

The largest fields in the deposits Р1-С3 of Mashivsko-Shebelinka zone in Dnipro-Donetsk Basin consist of clay rock, siltstone and sandstone layers with low filtration-capacity properties. The abnormally high initial production gas rates in several wells (up to 14 million тЗ/day) indicates the presence of relatively thin layers (zones) with high and very high gas permeability - super reservoirs which create the basic gas transport system in the deposit. The reservoir pressure reduction in the super reservoirs when developing leads to the gas delivery from the large strata of poor-porous (5-7 %) reservoirs with high pressure. It explains the addition to gas reserves during fields development and indicates the need for significant additional drilling out a number of gas deposits.