The article describes the technology based on fiber-optical systems which allow to receive real time changes of temperature and pressure throughout the whole length of the oil well, material on a possible arrangement of a fiber-optical cable in the trunk of a well and interpretation of the obtained thermometric data are also provided. The author presents conducted trial works on implementation of fiber-optical systems in the operating wells. Permafrost zone, depth of change of a standard size of the tubing pipe, change of the dynamic level and height of the foam ‘heading’, change of temperature of the submersible electric motor, change of the profile of fluid inflow coming from the layer was determined by means of fiber-optical system. This system wasn't applied earlier on the fields of Surgutneftegas JSC.
As a result of the conducted work the author offered to implement a fiber-optical cable for carrying out well survey in dynamic modes. The fiber-optical system will allow to carry out the monitoring of forcing and inflow profiles, to sel ect an optimum algorithm for the formation of development system and actions aimed at increasing oil recovery, to perform optimization of maintenance system of reservoir pressure for a more complete development of oil inventories. Implementation of fiber-optical system will lay the foundation for project implementation of ‘digital oil field’.
An application of a fiber-optical cable considerably reduces economic costs on conducting geophysical and hydrodynamic well survey and allows to control the operation of the submersible equipment, monitor change of the profile of fluid inflow coming fr om the layer, to find leakage of an operational column of a well and to reveal the flows behind the column.
