Sustainable Water Resource Management
PTTEP issued corporate sustainable development “G.R.O.W.T.H” Policy which includes a commitment for sustainable water resource management. To support the implementation of the Policy, PTTEP has the Water Management Guideline which outlines water related risk assessment and development of its mitigation; water and wastewater performance reporting; water and wastewater target setting; and also water and wastewater management good practices.
To demonstrate our commitment to transparency and accountability, PTTEP has been disclosing environmental data concerning water security to the Carbon Disclosure Project (CDP) since 2017. Our performance has been benchmarked at “Leadership Level” in 2017 and “Management Level” since 2018, revealing our management performance towards environmental stewardship against peers.
Water Risk Management
In 2013, PTTEP had developed our own Water Risk Assessment Tool and 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. The risk assessment has been developed for the current year and years 2020 and 2030 from the data gathered at the sites or 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 to determine steps, actions, guidelines, and priorities for risk mitigation.
In 2018, PTTEP updated the water risk assessment and scenario analysis of potential impact regarding water scarcity, increase in water prices, laws and requirements for water, conflicts with its stakeholders over water use. The results show that there is no significant effect to all PTTEP assets and support bases for every events assessed.
Water Use Reduction Initiatives
PTTEP focuses on acquiring non-freshwater for the production process, and reusing produced water in the oil recovery process to preserve freshwater for community consumption. PTTEP also conducted a study on water efficiency in 2014, which assessed the potential of introducing water-saving techniques within the production process. Following the study, PTTEP has focused on leak detection and repair programs and unidentified water losses reduction.
Produced Water Management
Produced water is water that is retained in a petroleum source and produced as a byproduct along with the petroleum production process. Produced water can be used for other purposes such as injection into reservoirs to improve oil recovery. In order to prevent the negative impact of produced water being released 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 the 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. Sinphuhorm project has managed and treated produced water to comply with the approved mitigation measure stated in the EIA report without discharging to environment.