Abstract
Liquid and gas production rates assessment is crucial while well operation. Based on the measured data obtained the evaluation of downhole pumping equipment condition, pump productivity and reservoir capability is performed, measures for improving pumping equipment operation and its rehabilitation are designed, well operation modes are defined.
Traditional well metering stations used by JSC “Samaraneftegas" are not only the basic tool to define the volumes of the oil extracted from oil wells but are also one of the costly spheres in oil production. At present, the applied metering stations, compared to old-time automated group metering stations, require either substantiated upgrading aimed at well smart operation and simplification of their structure and higher accuracy in metering, or the optimization of specific costs for the rent of expensive mobile metering stations. [9]
The promising approach to this solution is a budget set of measurements, based on the system of thermal pressure metering that within the frames of the issue considered is transformed into the process of instrumental on-line fluid rate metering. The paper considers the conceptual process and structural changes in geometry and coating of the existing flowmeters that enables us to consider this type of oil-field equipment as a certified metering device to replace the classic flowmeter stations. Taking into consideration the experience of thermal pressure metering system on the wells and the failure of its weakest part which is the communication link, the wireless channel of communication was made transmitting all signals by means of infrasound.
The solution allows introducing the device with no additional costly equipment and is a classical system of measurements with the firmware sensor of measurement of flow rate installed above the electric submersible pump (ESP). Tlike any other oil well provided with the standard unit of electric submersible pump, the complex of thermal pressure metering has the control station and the land-based system of thermal pressure metering. The process of measurement and fixing of parameters is given in fig. 2. [11]
The present design solution also gives a chance to improve the energy efficiency in oil production industry, to reduce the number of damages and service of submersible oil-pumping equipment, to optimize the system of reagent dosing and will bring the significant economic effect without high costs for production.