Emissions to Air

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 2018, the total amount of air emissions decreased by 10 % compared to 2017, totalling 7.7 k tonnes. The reduction of emissions is explained by a significant decrease in the volumes of gas and liquid combusted at well flares. Table below shows data on the permissible and actual KPO’s emissions for the period of 2016-2018.

Permitted and actual volumes of pollutants emissions, 2016-2018

Annual volume of emissions by pollutants, in tonnes:

2016

2017

2018

Permitted:

21,876

26,577

19,986

Actual, including:

11,421

8,569

7,759

Nitrogen oxides

1,934

1,967

1,931

Sulphur dioxide

5,819

3,641

3,138

Carbon monoxide

1,850

1,266

1,249

Volatile organic compounds

1,449

1,533

1,315

Hydrogen sulphide

28

27

3

Solid particles

89

48

65

Other

252

87

58

In 2018, the specific emissions per unit of production amounted to 0.28 tonnes per 1,000 tonnes of hydrocarbons (HC) produced. The decrease in specific emissions in 2018 as compared to 2017 was due to smaller volumes of flared mixture at wells and production facilities, and larger production volumes.

Volume of HC production and environmental emissions in 2016-2018

Gas Flaring

In 2018, the total amount of flared gas was only 0.06% of the total volume of gas produced by KPO or 0.38 tonnes per thousand tonnes of produced hydrocarbons. Such an emission rate as a result of flaring in 2018 is an evidence of a very high performance when compared to the worldwide industry average of 12.1 tonnes per thousand tonnes and European average of 2.9 tonnes per thousand tonnes,[1] as stated in the 2017 IOGP report.

In 2018, 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. As a consequence of using this equipment and materials, the volume of liquids flaring decreased by 60 thousand tonnes, which was 94% of the volume produced during the wells clean-up. The volume of flared gas during the wells clean-up decreased by 40 mln m3 (or 77% of the volume produced during the wells clean-up).

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 2018, the KPO gas utilization rate reached 99.94% (99.92% in 2017). The performance target approved by the RoK authority under the 2018 Associated Gas Processing Development Programme is 99.4%. Gas utilization in the Republic of Kazakhstan in 2016 amounted to 97.5%[1].

Gas utilization and flaring in 2018

[1]Data source: the RoK Energy Minister’s Order No. 571 dated 28 December 2016 On the Strategic Plan of the RoK Ministry of Energy for 2017 — 2021.