Emissions to Air

Activity of such industrial enterprises as KPO is always associated with air emissions. High concentration of toxic substances in the air leads to environmental degradation. In this regard, KPO has set the goal to minimize the negative impact of its activities.

KPO manages air emissions based on the limits established in the Environmental Emissions Permit. Most emissions are generated as a result of combustion of fuel gas in gas turbine units, boilers, process heaters, compressors, and gas and liquid flaring.

In 2019, the total amount of air emissions decreased by 2% compared to 2018, totalling 7,597 tonnes. The reduction of emissions is explained by the shorter operating time of equipment due to the turnaround. Table below shows data on the permissible and actual KPO’s emissions for the period of 2017-2019.

Permitted and actual volumes of pollutants emissions, 2017-2019

Annual volume of emissions by pollutants, in tonnes:

2017

2018

2019

Permitted:

26,538

19,986

18,544

Actual, including:

8,569

7,759

7,597

Nitrogen oxides

1,967

1,931

1,636

Sulphur dioxide

3,641

3,138

3,281

Carbon monoxide

1,266

1,249

1,205

Volatile organic compounds

1,533

1,315

1,329

Hydrogen sulphide

27

3

3

Solid particles

48

65

80

Other

87

58

63

Note: Emission volumes data is provided in accordance with the data of statistical reports «2-TP Air».

In 2019, the specific emissions per unit of production amounted to 0.29 tonnes per 1,000 tonnes of produced hydrocarbons (HC). A slight increase in specific emissions in 2019 compared to 2018 is explained by a decrease in production due to the turnaround.

Volumes of HC production and environmental emissions in 2017-2019

Gas Flaring

In 2019, the total amount of flared gas made only 0.09% of the total volume of gas or 0.56 tonnes per thousand tonnes of produced hydrocarbons. Such an emission rate in result of flaring is an evidence of a very high performance when compared to the worldwide industry average of 10.5 tonnes per thousand tonnes and European average of 3.2 tonnes per thousand tonnes[1], as reported in the IOGP Report 2018.

In 2019, KPO continued using high-pressure separators, high-pressure pumps and hydrocarbon-based fluid contributing to reduction of air emissions when cleaning up (completing) the wells. Because of using this equipment and materials, the volume of liquids flaring decreased by 98 thousand tonnes, which was 97% of the volume produced during the wells clean-up. The volume of flared gas during the wells` clean-up decreased by 54 mln m3 (or 76% of the volume produced during the wells clean-up). The increase in gas flaring compared to 2018 was due to the turnaround.

Volume of associated gas flared, mln. m3

[1] Data source: Annual reports of the International Association of Oil and Gas Producers (IOGP) — «Environmental Performance Indicators — 2016 Data».

Gas utilization

In 2019, the KPO gas utilization rate reached 99.91% (99.94% in 2018). The performance target approved by the RoQ Authority as part of the 2019 Associated Gas Processing Development Programme is 99.61%. Gas utilization in the Republic of Qazaqstan in 2018 amounted to 98.7%[2].

Gas utilization and flaring in 2019

[2]Data source: the RoQ Energy Minister’s Order No. 571 dated 28.12 December 2016 «On the Strategic Plan of the RoQ Ministry of Energy for 2017 — 2021».