Monte Carlo simulation for determining gas saturation using three-detector pulsed neutron logging technology in tight gas reservoir and its application

Zhang, Feng; Liu, Juntao; Yuan, Chao

doi:10.1016/j.apradiso.2013.03.092

Cited by 13 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To cope with the uncertainty in the estimation of gas expulsion intensity and other related parameters related to gas accumulation, quality control is carried out from three aspects: (1) relying on a large amount of well data in the study area, based on logging and mud-logging interpretation to improve the characterization accuracy [48]; (2) referring to other characterization methods of gas expulsion to improve the calculation accuracy, such as mudstone compaction regression by logging acoustic curves to calculate the excess formation pressure. In a tight gas reservoir, the value of under pressure is quantitatively related to gas saturation [49]; and (3) with abundant data available, statistical simulation methods such as Monte Carlo are used to estimate the parameters [50].…”

Section: Uncertainty Analysis and Quality Controlmentioning

confidence: 99%

Saturation Height Modelling for Tight Sandstone Reservoirs with Gas Diffusion Dynamics Taken into Account

Lyu,

Yang,

Hao

et al. 2023

Geofluids

View full text Add to dashboard Cite

Interpreting and predicting the saturation of tight sandstone gas reservoirs are the key task to improve the reservoir development. The role of gas diffusion dynamics is stronger than that of buoyancy during the gas accumulation of tight sandstone reservoirs. In this study, a saturation height model that takes gas diffusion dynamics into account is proposed, which can complement logging saturation interpretation and provide a better practice in saturation prediction. Taking the study of the Sulige tight sandstone gas reservoir in China as an example, the saturation height model compares the controlling factors and uncertainties affecting the saturation distribution, characterizes the complex gas-water distribution, and determines the lower gas charging limits. This study concludes that the configuration between gas diffusion dynamics and reservoir capillary pressure controls the distribution of saturation. The buoyancy effect only serves to improve the saturation at regional uplifts with good petrophysical properties. The different saturation characteristics in the central, western, and eastern parts of the Sulige gas field are precisely caused by the different configurations of source rock quality and reservoir quality. This study provides a key reference for static model and development deployment.

show abstract

Section: Uncertainty Analysis and Quality Controlmentioning

confidence: 99%