Sustainable Water Resource Management at PTTEP
PTTEP issued corporate sustainable development “G.R.O.W.T.H” Policy which includes a commitment for sustainable water resources management. To support the implementation of the Policy, PTTEP issued the Sustainable Development Guideline in 2013 which outlines PTTEP’s commitment and expectation for water related risk management.
PTTEP also issued Water Management Guideline in 2013 which outlines recommended approaches for water supply and wastewater management in E&P operations.
In 2014, PTTEP conducted Water Efficiency Study for the operating assets located in water-stressed area based on IPIECA Global Water Tool: S1 and PTTEP1 assets. Results of the study have been used to develop a water reduction action plan which has been implemented since 2015. Additional water reduction action plan was also implemented in 2016.
Water Risk Management
PTTEP conducted risk assessment for water resource management for every operation site covering water scarcity, increase in water prices, laws and requirements for water, conflicts with its stakeholders over water use, etc. A risk assessment tool has been developed for the years 2020 and 2030 data gathered at sites and data retrieved from internationally recognized prediction tools for water availability (IPIECA Global Water Tool for Oil and Gas, WRI Aqueduct and WWF Water Risk Filter). The results are used for determining steps, actions, guidelines, and priorities.
In 2016, PTTEP updated our own water risk assessment tool to be consistent with the latest version of the international prediction tools.
Water Use Reduction Initiatives
PTTEP focuses on acquiring non-fresh water for the production process, and reusing produced water in order to enhance oil recovery as well as preserving fresh water for community consumption. PTTEP also conducted a study project on water efficiency in 2014, which assessed the potential of introducing a water saving techniques within the production process. Following the study, PTTEP will focus on leak detection and repairing program and unidentified water losses reduction.
In addition, PTTEP also set a water reduction target for the S1 asset, which consumes a significant amount of freshwater. We have committed to reducing our freshwater intensity at S1 asset by 5 percent in 2020 based on 2013 as the base year.
In 2016, S1 and PTTEP1 assets achieved fresh water consumption reduction of approximately 200,000 m3 compared to 2015. This achievement is from implementing improvements to the cooling system and water circulation maintenance program to significantly reduce water loss in production process.
Produced Water Treatment
Produced water is water that is retained in a petroleum source and produced as a by-product along with the petroleum production process. Produced water can be used for other purpose by injection into reservoirs to enhance oil recovery. In order to prevent the negative impact of produced water into the environment, PTTEP operates its activities by complying with the regulatory requirements of every area where we operate.
For the implementation of projects in Thailand, the zero discharge scheme has been continuously applied since 2010. The scheme uses efficient techniques to inject the produced water back to the depleted petroleum reservoirs. Despite increasing trend of produced water generation following the increased production rate and the aging reservoirs, PTTEP remains successful in injecting all the produced water created in the petroleum production back into depleted reservoirs with the exception of the Sinphuhorm project, which was only recently acquired and come under PTTEP’s operational control in late 2014. Sinphuhorm project has managed and treated produced water to comply with the approved mitigation measure stated in the EIA report.