Strategical Resilient Approach Leading Towards Sustainability and Net Zero
Authors: Ahmed S. M. , Al Ketbi A. , Al Katheiri G. , Al Mazrouei M. K. , Aslam M. , Haider F. , Ahmed M. S. , Alhammadi Y. , Amir M. 
Published: September 2024

Availability of essential relief systems at Oil Processing facilities is highly required to ensure safe handling of hydrocarbons during depressurization scenarios to avoid escalation of emergency situations. During maintenance of close drain systems, facilities are isolated, drained & depressurized. Innovative methodology and strategic initiative piloted by ADNOC-Onshore Asset that enabled uninterrupted operations without close drain system by managing makeshift arrangements, avoided 45 days Station shutdown along with flaring of 3 MMscf gas/ 168 Tons CO2.

To ensure essential relief system availability during maintenance and keeping station operational, all technical aspects utilizing external equipment reviewed. Key challenges were collaboratively evaluated in detail to enlist backup equipment requirements.

To develop and execute this sustainable production approach, following method employed: Different emergency scenarios evaluated due to unavailability of drain system.Arranged backup draining/venting system (Containing Portable test separator, storage tank and pump arrangement).Performed comprehensive risk assessments and developed operational strategy to operate remote station with temporary arrangements.Work instructions revised.Requisite training imparted to operations staff to handle backup system.Mock drills conducted to verify workforce readiness.

During the unavailability of essential relief systems, stations are depressurized to avoid any unforeseen scenarios that may escalate the unforeseen emergency situation. However, with the intention of keeping the station in operation to meet mandated & sustainable production targets and ensuring safety of the facility and with the mindset of Net Zero flaring, this strategic resolution was piloted and implemented in house, in line with management of change procedures and protocols.

Following benefits pertaining to Sustainability-Enabling Net zero were realized from this piloted novel approach: Production gain of 450,000 Barrel of Oil (10,000 barrels of oil per day for 45 days)Avoided 3 MMscf gas flaring – Reduction in GHG Emissions – 168 Tons CO2.Reduction in operational risk due to handling of hazardous hydrocarbons while carrying out depressurization activity.

Implementation of this innovative and strategic solution has ensured continuous production from remote station, even in during the unavailability of essential relief system with the help of tailored made solution, that also eradicated the flaring of huge volumes of gas.

The implemented solution is highly effective in ensuring continuous production with the mindset of Net zero flaring and can be replicated to other existing remote facilities in the company as well as Worldwide as best industry practice. This implementation will enhance the availability of relief system as well as ensuring the integrity of network and facilities thus avoiding flaring and liquid carry over during depressurization.

This paper also demonstrates how the different approach can result in gaining continuous production form the facility and how the gas flaring can be abated for minimizing the environmental impacts. Technical challenges and solutions for alternate equipment, installing, and operating the system along with an insight using in house resources. The paper also highlights equipment selection and best practices for future replication by other Oil & Gas Producers.