Unlocking and Materializing Development Opportunities with an Optimized Subsurface Study Approach and Adaptive Execution in a Brownfield

Tan, Yeen Voon; Amiruddin, Nurul Azrin; Li, Hui Ming; Sim, Chee Hui; Aziz, Shahrizal Abdul; Adnan, Nursyazwani; Mansor, Mohd Najmi; Anuar, Mohd Azlan; Jacobs, Steve; Khalid, Aizuddin; Kumar, Ashok

doi:10.2523/iptc-19494-ms

Day 3 Thu, March 28, 2019 2019

DOI: 10.2523/iptc-19494-ms

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Unlocking and Materializing Development Opportunities with an Optimized Subsurface Study Approach and Adaptive Execution in a Brownfield

Yeen Voon Tan

Nurul Azrin Amiruddin

Hui Ming Li

et al.

Abstract: This paper discusses an alternative study approach with multiple lessons learned from a recent successful infill drilling campaign in a medium-sized brownfield. The team conducted a practical and an optimized subsurface study, including the no-frills classical reservoir engineering and a simple sector model to justify the infill wells. From idea generation to monetization of the barrels, it was fast and cost effective without compromising technical assurance. Results of the infill drilling campa… Show more

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Simple and Effective Steps to Generate Opportunities in a Mature Field: Challenging Historical Data and Defying the Established Understanding

Abdulhadi

Mansor

Tran

et al. 2020

SPE/IATMI Asia Pacific Oil &Amp; Gas Conference and Exhibition

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While it is true that reservoir simulation and new technology applications are crucial to unlocking reserves in a field, the first and most fundamental step in rejuvenating a mature field is to verify the existing data and evaluate the basis of the current understanding. This process, while seemingly "routine", can uncover ambiguous data and questionable interpretations, which can mislead the reservoir simulation results unless corrected. The older and more mature the oilfield, the more ambiguities that can be uncovered. The new understanding can be subsequently converted to "quick-gain" opportunities that can be quickly monetized, while maturing higher investment and more complicated opportunities with reservoir simulation. The approach applied in a sample field named Field B comprised challenging the established interpretation and understanding by taking a more thorough look and applying a different approach with the basic data. There are examples of reinterpreting the seismic data, cross-checking pressure and production reports with geological understanding, cross-checking well intervention reports, production and open-hole log data, and challenging the conventional approach and understanding. On top of the detective work, it is also necessary to judge whether the data "make sense" or seem unreasonable. Although simple, this approach was effective and successful in generating multiple opportunities in Field B. This paper provides valuable insight and examples in data verification and challenging established understanding to generate potential opportunities. Having a good grasp of the fundamentals is a valuable skill in a mature field environment. It pays to thoroughly understand the fundamentals, because otherwise, the "fancy techniques" will not work.

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Simple and Effective Steps to Generate Opportunities in a Mature Field: Challenging Historical Data and Defying the Established Understanding

Abdulhadi

Mansor

Tran

et al. 2020

SPE/IATMI Asia Pacific Oil &Amp; Gas Conference and Exhibition

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Striving Towards Zero Gas Emission

Ariffin

Guillory

Low

et al. 2022

Day 3 Thu, March 24, 2022

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Greenhouse gas emission (GHG) is the main contributor to global warming, so the industry players need to take a huge step to reduce GHG. Furthermore, the implementation of carbon tax has eroded oil project values and drives teams to think about ways to reduce the carbon tax. This paper highlights the subsurface studies, gas balancing method, and surface modification effort to reduce the gas emission in Field B while reaping the benefits not just of reduced carbon tax but increased oil production and revenue. Gas injection is not just increasing reservoir pressure but also reduces emission. Several reservoirs in the field have been depleted by 66% to 500 psi. The team converted the existing oil wells to gas injection wells instead of spending high CAPEX to drill new gas injection well. This way the team can confirm the benefit of gas injection with a low-risk cash injection. The field has a high amount of unproduced Non-Associated Gas (NAG), but this NAG cannot be produced without a gas evacuation plan. Producing the NAG will cause the field to vent higher with existing facilities installations. So, the team came out with a plan to monetize the gas by installing a new gas pipeline and new gas processing platform. Furthermore, the Associated Gas (AG) which was vented previously can be channeled to the new compression system to further reduce the emission. Currently, the gas from the surge tank is lined up straight to the vent stack. A Vapour Recovery Unit (VRU) was proposed to install upstream of the surge vessels. The VRU will pump the gas back to an AG gas compressor and straight to the gas sales line. The gas injection project has increased the reservoir pressure from 500 psi to 700 psi. As a result, one idle well reactivated to produce oil, two wells were drilled from the same reservoir, and gas venting was reduced by up to 7 MMscf/d. Because of this success, several other wells were identified for gas injection candidates in other reservoirs. NAG gas project is expected to provide 100 MMscf/d revenue. In addition to that, the NAG project also helps to reduce AG venting because of AG compressor limitations. The additional AG volumes are around 5 MMscf/d. VRU installation is still undergoing doability and commerciality study because the gas from the surge vessel is minimal. However, the team's dream towards zero gas emission is a step closer if VRU installation is brought forward. Because the field is not well equipped with a gas meter for each piece of equipment. An accurate and understanding of gas balance estimation is important to drive zero gas emission.

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Unlocking and Materializing Development Opportunities with an Optimized Subsurface Study Approach and Adaptive Execution in a Brownfield

Cited by 2 publications

References 0 publications

Simple and Effective Steps to Generate Opportunities in a Mature Field: Challenging Historical Data and Defying the Established Understanding

Simple and Effective Steps to Generate Opportunities in a Mature Field: Challenging Historical Data and Defying the Established Understanding

Striving Towards Zero Gas Emission

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