Reservoir Characterization while Drilling; A Real Time Geosteering Answer to Maximize Well Values. A Case Study, Offshore Abu Dhabi.

Serry, Amr Mohamed; Herz, Ulrich; Tagarieva, Larisa

doi:10.2118/183092-ms

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…Additionally, another field study for reservoir characterization and Geosteering was conducted in one of the Abu-Dhabi offshore 3 rd order regressive carbonate sequence wells by (Serry et al 2016). The reservoir shows wide range of facies.…”

Section: Geosteering and Well Placement Optimizationmentioning

confidence: 99%

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A review on the applications of nuclear magnetic resonance (NMR) in the oil and gas industry: laboratory and field-scale measurements

Elsayed

Isah

Hiba

et al. 2022

J Petrol Explor Prod Technol

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This review presents the latest update, applications, techniques of the NMR tools in both laboratory and field scales in the oil and gas upstream industry. The applications of NMR in the laboratory scale were thoroughly reviewed and summarized such as porosity, pores size distribution, permeability, saturations, capillary pressure, and wettability. NMR is an emerging tool to evaluate the improved oil recovery techniques, and it was found to be better than the current techniques used for screening, evaluation, and assessment. For example, NMR can define the recovery of oil/gas from the different pore systems in the rocks compared to other macroscopic techniques that only assess the bulk recovery. This manuscript included different applications for the NMR in enhanced oil recovery research. Also, NMR can be used to evaluate the damage potential of drilling, completion, and production fluids laboratory and field scales. Currently, NMR is used to evaluate the emulsion droplet size and its behavior in the pore space in different applications such as enhanced oil recovery, drilling, completion, etc. NMR tools in the laboratory and field scales can be used to assess the unconventional gas resources and NMR showed a very good potential for exploration and production advancement in unconventional gas fields compared to other tools. Field applications of NMR during exploration and drilling such as logging while drilling, geosteering, etc., were reviewed as well. Finally, the future and potential research directions of NMR tools were introduced which include the application of multi-dimensional NMR and the enhancement of the signal-to-noise ratio of the collected data during the logging while drilling operations.

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Section: Geosteering and Well Placement Optimizationmentioning

confidence: 99%

“…The deployment of LWD-NMR allowed a rig time optimization and enhanced data quality, since the data is recorded before excessive mud filtrate invasion occurs. Finally, the NMR provided petrophysics-driven geosteering operation along reservoir's highest quality units (Serry et al 2016).…”

Section: Geosteering and Well Placement Optimizationmentioning

confidence: 99%

A review on the applications of nuclear magnetic resonance (NMR) in the oil and gas industry: laboratory and field-scale measurements

Elsayed

Isah

Hiba

et al. 2022

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

show abstract

Application of Logging While Drilling - Nuclear Magnetic Resonance in Reservoir Evaluation and Geosteering: A Case Study in Marrat Reservoir, Umm Roos Field, West Kuwait

Nguyen

Fahmy

Dzhaykiev

et al. 2022

Day 2 Tue, November 01, 2022

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The Jurassic Marrat reservoir in Umm Roos field of West Kuwait (WK) is a low-permeability carbonate reservoir with heterogeneous petrophysical character that limited the predictability of reservoir properties and highly deviated development wells are preferred to maximize the exposure of the reservoir. However, there is an environmental risk and high operational cost when running radioactive-based porosity logging tools in such complex well profiles. To avoid that risk, Nuclear Magnetic Resonance (NMR) with conventional resistivity and gamma ray in a logging while drilling (LWD) program is proposed to achieve real-time formation evaluation and efficiently support well placement to maximize the reservoir contact. This paper presents the application of LWD-NMR as an alternative solution to evaluate reservoir properties as well as to land the highly deviated well successfully in the best reservoir sweet spots to achieve the maximum outcome for production.

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A Proactive Geosteering Approach Integrating Advanced LWD Nuclear Magnetic Resonance and Deep Azimuthal Resistivity Tools for Landing a Deep Jurassic Horizontal Well in the Best Carbonate Reservoir Facies

Mohamed,

Fahmy,

Nguyen

et al. 2024

Day 3 Wed, April 24, 2024

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The Jurassic Marrat formation in West Kuwait is a tight and heterogeneous carbonate reservoir in which petrophysical characteristics lead to a limitation in the predictability of reservoir properties. Landing a later well exposes operational risks, therefore LWD triple combo is excluded to avoid environmental issues and cost effects. Instead, LWD-NMR combined with Deep Azimuthal Resistivity tools emerges as the optimum solution to evaluate the formation and optimize well placement in the best reservoir quality. NMR is utilized for accurate porosity because it is independent of lithology. The T2 distribution is a direct indicator of porosity and permeability. DAR is an azimuthal propagation resistivity tool that can greatly reduce the risk of misplacing the wellbore while drillingextended reach and complex 3D horizontal wells. Marrat reservoir tends to have high resistivity, but theporosity isn't always ideal. It makes geosteering operation more challenging if only gamma & resistivity logs are used to overcome this challenge, LWD-NMR in combination with DAR maximizes the reservoircontact and produces from the best reservoir quality. Deep Azimuthal Resistivity shows the F-11 surface was found 25 ft. shallower than the A-1 plan. The plan was modified in real-time to ensure a successful landing within the target zone, the starting plan of 3.8 DLS was modified and increased to 4.65 DLS to account for the shallower F-11 with the aim of achieving a TVD depth of 20 ft. inside the reservoir zone. After landing the well at 90 deg inclination following the NMR & DAR signatures, we continue building the inclination angle to 90.5 deg to gently upwards cut stratigraphically across the section and to penetrate the optimum reservoir zone before leveling off gradually to 89.3 deg following NMR & DAR signature to maintain the well in the best reservoir facies. During the geosteering operation in the F-11 zone, a decrease in porosity from 16 pu to 2 pu was detected by the NMR. Consequently, a real-time adjustment was made to avoid the tight area and guide the well toward the sweet spot in the F-11 zone. The combination of NMR and DAR tools successfully landing of the well in the F-11 zone with high-confident hydrocarbon potential.

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Reservoir Characterization while Drilling; A Real Time Geosteering Answer to Maximize Well Values. A Case Study, Offshore Abu Dhabi.

Cited by 3 publications

References 1 publication

A review on the applications of nuclear magnetic resonance (NMR) in the oil and gas industry: laboratory and field-scale measurements

A review on the applications of nuclear magnetic resonance (NMR) in the oil and gas industry: laboratory and field-scale measurements

Application of Logging While Drilling - Nuclear Magnetic Resonance in Reservoir Evaluation and Geosteering: A Case Study in Marrat Reservoir, Umm Roos Field, West Kuwait

A Proactive Geosteering Approach Integrating Advanced LWD Nuclear Magnetic Resonance and Deep Azimuthal Resistivity Tools for Landing a Deep Jurassic Horizontal Well in the Best Carbonate Reservoir Facies

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