Vertical and lateral equilibrium in a Lower Cretaceous reservoir

• Published in: Journal of petroleum science & engineering Vol. 212; p. 110293
• Main Authors: Baghooee, Hadise, Montel, François, Shapiro, Alexander
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-05-2022
• Subjects: Consistency check of PVT data; Lower Cretaceous reservoir; Thermal gradient; Thermal segregation; Vertical and lateral gradient; Consistency check of PVT data; Lower Cretaceous reservoir; Thermal segregation; Vertical and lateral gradient; Thermal gradient
• ISSN: 0920-4105; 1873-4715
• DOI: 10.1016/j.petrol.2022.110293

The aim of the study is to find representative fluid samples and study depth gradient and lateral variations in the Lower Cretaceous reservoir. Consistency analysis methods for the samples will be carried out to find representative reservoir fluid samples that can be used in a depth gradient study. Based on the representative samples, it will be analyzed and investigated whether observed compositional variations between samples can be explained by compositional gradients originating from gravitational and/or thermal gradient effects. This work illustrates how a depth gradient analysis can help in understanding fluid communication between the representative samples.
•Lateral fluid equilibrium in a large low-permeable reservoir is analyzed.•A new theory of non-isothermal gravity segregation is applied for the analysis.•The connectivity assessment is related to the error analysis in the fluid samples.•Consistency of sampling is a key point in the analysis.