Sustainability

Waste handling methods

In 2020, the Company continued extraction of wastes from the old Solid Waste and Spent Drilling Liquids Storage Site for further treatment at the Thermo-mechanical Cuttings Cleaning facility and Rotary Kiln Incinerator and disposal at Solid industrial Waste Landfill. The waste is disposed at the Landfill according to the RoQ environmental legislation requirements.

In 2020, 1,220 tonnes (as compared to 3,777 tonnes in 2019) were sent for treatment from the Solid Waste and Spent Drilling Liquids Storage Site. In 2021, further processing of waste from the site will continue.

KPO waste handling methods in 2020, in tonnes

Waste handling methods

Generated hazardous waste

Generated non-hazardous waste

Domestic

waste

TOTAL

1

Available waste at the beginning of 2020

339,835

946

0

340,781

2

Generated during the reporting year

29,378

2,717

1,083

33, 178

3

Reused at the enterprise

2,762

0

0

2,762

4

Treated at facilities

17,260

94

894

18,247

5

Incineration in the General Purpose Incinerator without power generation

2

0

770

772

6

Disposed of and buried at waste disposal facilities

12,665

0

0

12,665

7

Handed over to specialist contractors

1,554

3,566

380

5,500

8

Available waste at the end of 2020

341,416

3

0

341,419

According to the RK Environmental Legislation, wastes are classified into hazardous and non-hazardous, but there is no classification by hazard classes, accordingly, all reporting to the Company is done according to this classification. According to the RK sanitary rules, Hazard Classes 1-4 are hazardous wastes with the degree of hazard from extremely hazardous (Class 1) to slightly hazardous (Class 4), Class 5 refers to non-hazardous wastes.

KPO waste is mainly produced during the wells drilling and workover activities. Concurrently, the water or oil base of the drilling cuttings depends on the type of the drilling mud used for well operations. The solid and liquid drilling waste generated in 2020 amounted to 14,051 tonnes (70% from the initially generated waste, i.e. initial waste volume before treatment).

Table below shows the main types of drilling waste broken down by the handling methods. As the Table shows, only water-based muds and cuttings are subject to disposal. Oil-based drilling cuttings are subject to burying after pre-treatment and extraction of the oil base.

Waste generated from well operations, by handling method, 2018 - 2020

Type of waste

Generated quantity, tonnes

Handling method

2018

2019

2020

1

Spent water-based drilling mud

324

427

4,125

Treatment at Liquid Treatment Plant (LTP)

1,251

1,014

1,020

Disposal

2

Water-based drilling cuttings

546

925

533

Burial

-

182

0

Thermal treatment in the Rotary Kiln Incinerator (RKI)

3

Spent oil-based drilling mud

1,618

2,676

818

Treatment at the Thermo-mechanical Cutting Cleaning Facility (TCC) and Liquid Treatment Plant (LTP)

4

Oil-based drilling cuttings

8,049

9,022

5,316

Treatment at the TCC with extraction of the oil base, water and followed by the burial of the solid part, thermal treatment in the Rotary Kiln Incinerator (RKI)

5

Spent brines

6,309

4,866

1,932

Treated at the TCC and LTP, thermal treatment in the RKI

578

2,837

296

Disposal

6

Oil cuttings

7

44

11

Thermal treatment in the Rotary Kiln Incinerator (RKI)

Within the contract terms, the Company hands over part of the waste for disposal to specialist contractors, who make their own decision on further waste handling methods once the waste has been accepted from KPO, and report on its transfer to third parties on a quarterly basis. Depending on the type, specialised enterprises hand over the waste for treatment with subsequent production of consumer goods, demercurization, regeneration, thermal treatment, incineration, physical and chemical treatment, dismantling into component parts with further transfer to concerned enterprises as recyclables.

Due to introduction of the Article 301 of the RoQ Environmental Code from 01.01.2019 that prohibits disposal of waste plastic, plastic, polyethylene and polyethylene terephthalate packaging, waste paper, cardboard, paper waste, glass cullet, the Company carries out segregation of these types of waste in rented buildings with engagement of sub-contractors. These types of waste are handed over to specialized enterprises to be used as recyclables.

Since 2011 until the end of 2020, for the whole period of the waste paper segregation, about 640 tonnes of the waste paper has been collected and transferred to local enterprises for production of consumer goods.

The segregation of spent batteries was arranged in all KPO office premises. In 2020, 118 kg of batteries were collected.