Unlocking Well Potential with CO2 Tracer Application in High Deviation Well

Kueh, Jing Zhi; Lim, Jit Sen; Claudius, Rick Raynold; Huong, Chii Seen; Dev, Daevin; Thamilarasu, Mohana Ramanee; Wahab, Nurul Syafiqa Abdul; Hashim, Hasnor Hassaruddin

doi:10.2118/196483-ms

SPE/IATMI Asia Pacific Oil &Amp; Gas Conference and Exhibition 2020

DOI: 10.2118/196483-ms

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Unlocking Well Potential with CO2 Tracer Application in High Deviation Well

Jing Zhi Kueh

Jit Sen Lim

Rick Raynold Claudius

et al.

Abstract: In offshore environment, it is common for operators to develop the field with high deviation wells, in order to optimize both field development cost and reservoir drainage. Well intervention for high deviation wells can be difficult, as specialized tools are needed for well intervention in high deviation wells. As such, high deviation wells normally have well issues after 5 years of production. In Field B, 4 high deviation wells were having unhealthy well lifting, well lifting diagnostics and op… Show more

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Cited by 3 publications

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Gas Lift Optimization Study in Brownfields: A Review on Dual String Gas Lift Injection Allocation In Malaysian Offshore Fields

Suggust

Kueh

2022

Day 3 Wed, October 05, 2022

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Sarawak offshore wells are mostly completed with dual string completion and are heavily relying on gas lift as the primary artificial lift. Dual string gas lift is an economical way to selectively produce from multi-stacked reservoirs in Sarawak fields. However, it poses great challenges in terms of operations, troubleshooting, allocation and optimization as both strings share a common annulus. Dual string gas lift performance diagnosis need to be done from time to time to ensure the strings production are optimized at well level. Gas injection rate is a critical input in predicting the well performance based on the gas lift performance curve. However, the gas lift injection rate for dual string is measured at well – not at string level. The gas lift injection rate into each string needs to be allocated correctly either through well modelling calibration approach, testing one string while shutting its neighbor or well tracer application. After allocating the gas lift injection rate into each string correctly, well modelling prediction run at done to mitigate multipointing issues, design optimum point of injection, establish optimum injection rate at well level and determine the optimum casing head pressure. The operator has proposed for a workflow to correct the dual gas lift injection allocation based on well modelling calibration. The workflow was implemented and resulted in multiple optimizations in terms of gas lift valve change program, choke optimization and gas lift rate optimization. Apart from that, the paper will also share on the findings from the well tracer application in correcting the gas injection allocation. This paper will focus on the production performance check on dual string gas lift performance at well level. The findings from the study are subsequently monetized as quick-gain opportunities while the operator is embarking into long term study on assessing the alternative artificial lift strategy suitable for a brownfield. The lessons learned will also be applicable to oil fields with similar situations to further improve the fields’ production.

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Gas Lift Optimization Study in Brownfields: A Review on Dual String Gas Lift Injection Allocation In Malaysian Offshore Fields

Suggust

Kueh

2022

Day 3 Wed, October 05, 2022

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Field Wide Intervention-Less Reservoir Pressure Data Acquisition through the Application of Echometer – A Case Study

Basri,

M Noordin,

Zainul

et al. 2023

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

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This paper aims to present a field-wide case study that explores the use of Echometer survey as an alternative method for acquiring static reservoir pressure data. In Field X, located in the East Malaysia Region, conventional static gradient surveys (SGS) were typically deployed to measure the static reservoir pressure. However, conducting SGS in Field X posed challenges related to balancing data acquisition with production enhancement activities, limited operation windows availability, and minimizing production deferment. The Echometer application addresses these challenges by offering non-invasive data acquisition with minimal equipment requirements. The Echometer application employs a non-invasive approach by shooting acoustic waves into the well. As these waves travel downward and encounter any abrupt changes in the well, some of the waves are reflected towards the surface. By analyzing these reflections, which indicate disturbances to the acoustic waves, the fluid level inside the tubing can be determined. By combining this information with shut-in tubing head pressure (SITHP) and fluid gradient measurements, the static reservoir pressure can be estimated. In Field X, 17 surveys targeting 14 different reservoirs were conducted using the Echometer, and the results were compared with available permanent downhole gauge (PDG) data, reservoir pressure trends, and the latest SGS conducted to assess the reliability of the application. The Echometer campaign has demonstrated its effectiveness and reliability in determining static reservoir pressure. It can be considered as an alternative to SGS in fields with limited wireline windows due to its minimal equipment requirements, minimal production deferment, and absence of invasive well intervention. A presentation and discussion on the successful outcomes, limitations, best practices, and lessons learned from the Echometer campaign aim to contribute to the repertoire of production surveillance tools in the oil and gas industry by providing alternatives to conventional SGS for data acquisition.

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Brilliant at the Basics: A Review on Dual String Gas Lift Injection Performance in Malaysian Offshore Fields

Suggust

Kueh

2023

Day 1 Wed, March 01, 2023

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Unlocking Well Potential with CO2 Tracer Application in High Deviation Well

Cited by 3 publications

References 3 publications

Gas Lift Optimization Study in Brownfields: A Review on Dual String Gas Lift Injection Allocation In Malaysian Offshore Fields

Gas Lift Optimization Study in Brownfields: A Review on Dual String Gas Lift Injection Allocation In Malaysian Offshore Fields

Field Wide Intervention-Less Reservoir Pressure Data Acquisition through the Application of Echometer – A Case Study

Brilliant at the Basics: A Review on Dual String Gas Lift Injection Performance in Malaysian Offshore Fields

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