Economic Report 2019

ECONOMIC REPORT 2019

Figure 28: UK Upstream Production CO 2

Emissions by Source, 2018

Other 1.1%

Flaring 23.0%

13.2 million tonnes

Venting 0.4%

Heaters 1.8%

Turbines 67.5%

Engines 6.2%

Source: EEMS (May 2019)

CASE STUDY

A project to connect BP’s ETAP produced water reinjection system and bypass the asset’s seawater injection pumps has reduced CO 2 emissions by 11,000 tonnes per year. When oil and gas is produced, water found in the reservoir is also brought to surface. This produced water can often be treated before being released back into the sea and is also often pumped into a reservoir to increase the pressure as a method of enhanced recovery, as it results in increased flows of hydrocarbons towards producing wells. The ETAP production facility originally provided seawater injection to two of its fields, Mungo and Machar. When water injection to Machar stopped in February 2018, only Mungo was injecting seawater, leading to issues operating the large, fixed-speed water injection pumps and resulting in the dumping of treated water into the sea. Re-routing ETAP’s produced water to be injected into the Mungo field has helped remove a bottleneck in ETAP’s produced water system. By connecting the produced water reinjection system to the injection wells, the seawater injection pumps could be bypassed. No longer using the seawater injection pumps reduced the electrical load on ETAP by around 5 megawatts, reducing CO 2 emissions by 11,000 tonnes per year.

This is equivalent to 25 per cent of the BP North Sea Sustainable Emissions Reduction target for 2019.

54