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Greenhouse gas (GHG) emissions reduction journey in QatarEnergy LNG drilling & completion.

Number: 57

Author(s) : BHARGAVA P., QAZI M., YERGAZIN S., PURANIK R., BERZOU M., ALY M., MARTY S., KOFOED C. W., AL-MOHANNADI A. S., AL-KUWARI A., AL-MEDAIHKI A.

Summary

The QatarEnergy LNG team is executing a successful multiyear program to reduce Greenhouse Gas (GHG) emissions during Drilling & Completion phase via a combination of GHG Mapping, GHG Quantification and key GHG reduction initiatives.
For GHG Mapping, a systematic analysis of GHG emissions that accounted for the differences in well types, materials, logistics and operational data during the construction process was performed. This mapping yielded unique insights into the key contributing sources of emissions and highlighted critical factors that affect emissions. Prior to the effort, there was no estimate of GHG emissions during the well construction process.
Once critical components affecting GHG emission were identified, the cross-functional team at QatarEnergy LNG pursued unique flowback optimization initiatives that achieved the endobjectives but with significantly lower GHG emissions. Specifically, efficient measures to ramp up well flowbacks were implemented that contributed to a significant reduction in GHG emissions. Environmental threshold criterion for executing flowbacks was also changed based on wind dispersion studies and thermal camera measurements. This resulted in uninterrupted flowbacks during well clean up and lowered GHG emissions.
Digital tools such as Flowback and GHG emissions dashboards were developed and implemented. The tools provided access to a common database for stakeholders, real-time visualization of measurements and quantification of GHG emissions, and enabled collaboration.
Additionally, the team has progressed advanced modeling to quantify combustion efficiency of multiphase fluid flow during offshore flowback operations under a variety of environmental conditions. The results from this study can be used to further enhance combustion efficiency. The team is also pursuing advanced GHG Quantification technologies such as the use of Drones and imaging cameras to achieve the highest industry standards required for methane emissions quantification.
For further decarbonization of operations offshore, the team has advanced rig electrification via pursuing battery power storage system for rigs. The system is designed to work such that excess power generated from diesel generators during low power demand is stored in batteries while during peak power demand, the rig-power requirements are complemented with batteries. With the completed and ongoing efforts mentioned, the QatarEnergy LNG Team has been able to significantly reduce GHG emissions year on year for offshore D&C operations. This paper or presentation shares methods, results and conclusions of the various GHG reduction initiatives that have contributed to this effort.

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Details

  • Original title: Greenhouse gas (GHG) emissions reduction journey in QatarEnergy LNG drilling & completion.
  • Record ID : 30034670
  • Languages: English
  • Subject: Figures, economy
  • Source: 21st International Conference & Exhibition on Liquefied Natural Gas (LNG2026)
  • Publication date: 2026/02/05

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