The Upstream Division’s energy efficiency programme covers technical and organisational measures.
When it comes to technical measures, the key driver for improving energy efficiency is the production equipment upgrade. Of all production operations, mechanical liquid lifting consumes the biggest portion of energy. The Company optimises well performance by switching to short-term or intermittent operation and introducing energy efficient downhole equipment. Other technical improvement measures are the upgrade of pumps, use of energy efficient rotors and installation of variable-frequency drives in the reservoir pressure maintenance, oil preparation and pumping systems.
The Company achieved significant energy savings through well interventions to reduce the amount of produced water and use water injection techniques. The key organisational measures include energy audits and the implementation of an energy efficiency monitoring system and IT projects to support energy saving and energy efficiency processes.
Power consumption per tonne of produced liquid, the key energy efficiency metric, was 28.39 kWh/t.
In addition to implementing its Energy Efficiency Improvement Programme, the Company shut down low-margin wells and optimised the operation of oil pumping equipment at central gathering facilities to cut specific power consumption.
|Power consumption (purchase + generation), MWh|
|Y-o-y change, %|
|Heat consumption (self-generated and purchased from third-party suppliers), GJ|