Reservoir Development Aspects and Surface Facilities Design of Gas Condensate Fields with Oil Rims

Abstract

The operation of gas condensate fields under natural recovery drive is accompanied by retrograde condensation in the well bottomhole zone, which inhibits the movement of hydrocarbons in this area. One of the main methods of maintaining reservoir pressure under these complications is the injection of dry gas into injection wells, which is limited by economic factors. The problem of the development of gas condensate fields with oil rims is that the traditional reservoir pressure maintenance system does not provide a high oil recovery factor. Thus, the effective production of hydrocarbons requires new technologies and technical means. The paper considers a complex strategy for the development of such reservoirs, based on integrated modeling and the use of smart-well solutions. The paper presents PVT-analysis, special core analysis, geophysical studies and well test results. An integrated field model has been created that allows to identify effective technologies for the development of gas condensate formations and the oil rim, as well as to account for the operational capabilities of surface facilities, while maximizing hydrocarbon recovery. The assessment and recommendations for the long-term development of a gas condensate field with an oil rim are suggested. Multivariate calculations are performed to assess the productivity of wells and reach the field's maximum potential. The proposed field development strategy involves optimization of the surface infrastructure and hydrocarbon transportation system.