Improving the Development System in the Block 4 of Deposit No. 31 of Romashkino Field According to the Logging Reinterpretation and Simulation

This article describes the works carried out in the oil and gas production department “Dzhalilneft” to optimize the development of oil reserves from block 4, deposit No. 31 of the Romashkino field. Based on the logging reinterpretation, geological structure of the deposit is adjusted to make rational technological decisions and development of geological and engineering operations. Reinterpretation results of old geophysical data allowed correlating geological section on layers and adjust the previously constructed maps for development of Bobrikovian Lower Carboniferous. The work was performed to identify, study and further map erosion ‘incisions’. Based on the results of the reinterpretation of old geological and geophysical data for each well, change the values of reservoir characteristics of productive intervals, effective-oil-saturated strata, we obtained growth of oil reserves. According to the new geological model of block 4, deposits No. 31 the measures are suggested to optimize the placement of project wells for production drilling; wells are recommended for side and horizontal sidetracks, as well as geological and engineering activities for penetration of reservoirs previously unidentified and uninvolved in the development. The proposed measures have helped to reduce the geological and economic risks of drilling of unsuccessful wells, achieve the design level of oil production and oil recovery factor.