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Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1806
... ABSTRACT We develop a coupled thermo-hydro-mechanical (THM) model to study the fluid flow and heat extraction processes in hot fractured vuggy reservoirs consisting of natural fracture network and vug. Fluid flow along fractures and vugs are determined according to the cubic law and Navier...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, March 6–9, 2017
Paper Number: SPE-183680-MS
.... With the popularity of non-conductive drilling fluid (OBM) and improvement of electrical image logging technology, it is possible nowadays to acquire similar high resolution electrical images in OBM environment. Vugs can be identified visually on these new types of electrical images. However open vugs filled with OBM...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 7–10, 2016
Paper Number: SPE-183049-MS
... reservoirs requires preservation of the geological structure and reproduction of patterns. In this study, we model a discrete fracture-vug network using microtomography and multiple-point geostatistics (MPG) modeling technique. For this purpose, micro-CT scan images of a real core is used to generate two...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-175092-MS
... reservoirs requires preservation of the geological structure and reproduction of patterns. In this study, we model a discrete fracture-vug network using microtomography and multiple-point geostatistics (MPG) modeling technique. For this purpose, one micro-CT scan image of a real core is used to generate...
Proceedings Papers

Paper presented at the International Oil and Gas Conference and Exhibition in China, June 8–10, 2010
Paper Number: SPE-130287-MS
... Abstract Modeling and numerical simulations of fractured vuggy porous media is a challenging problem due to the presence of cavities called macro vugs which are connected via discrete fractures networks. The main difficulty is the co-existence of porous and free-flow region in such media...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-115347-MS
... Abstract Many of the world's oil fields and aquifers are found in carbonate strata. Some of these formations contain vugs or cavities several centimeters in size. Flow of fluids through such rocks depends strongly upon the spatial distribution and connectivity of the vugs. Enhanced oil...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–27, 2006
Paper Number: SPE-102888-MS
... with anhydrite cement and features a wide variety of textures. In some intervals the depositional textures are preserved, in others they are highly altered by diagenesis. Vugs are developed in several intervals. Computation of permeability from porosity alone yields scatter of a factor of 700. Rock typing using...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–12, 2005
Paper Number: SPE-96027-MS
... Abstract In some vuggy carbonate rocks, the sizes of the vugs are much larger than that of the matrix pores and different physical models are required for different parts of the pore space. This is particularly true when the vugs are touching, forming a network of directly connected vugs...
Proceedings Papers

Paper presented at the SPE International Petroleum Conference and Exhibition in Mexico, February 10–12, 2002
Paper Number: SPE-74341-MS
... Abstract Three porosity types, matrix, vugs and fractures, are usually present in naturally fractured, vuggy carbonate reservoirs. The vugs are generally considered connected either to the matrix or to the fractures in numerical simulation. One of the challenges of modeling these reservoirs...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, November 28–December 1, 2021
Paper Number: SPE-204555-MS
... weak transportation properties compared to carbonates with multimodal pore system. The behaviour of such formations is subject to percolation effect where the connectivity of vug clusters control the poro-perm relationship which can be explained with high-resolution microresistivity images and nuclear...
Proceedings Papers

Paper presented at the ARMA/DGS/SEG 2nd International Geomechanics Symposium, November 1–4, 2021
Paper Number: ARMA-IGS-21-034
... ABSTRACT: The fractured-vuggy carbonate reservoirs are widely distributed in North American and west of China. According to statistics, there have more than 70 fractured-vuggy reservoirs in the world. The logging data shows that the diameters of vugs are between 0.15-15 meters, several times...
Journal Articles
Journal: SPE Journal
SPE J. 25 (02): 609–631.
Paper Number: SPE-199341-PA
Published: 16 April 2020
... models do not consider vugs or fractures. There is a significant gap in the literature for models that design and evaluate matrix-acid stimulation in vuggy and naturally fractured carbonate reservoirs. The objective of this work is to develop a new model to simulate matrix acidizing under field...
Journal Articles
Petrophysics 60 (03): 429–437.
Paper Number: SPWLA-2019-v60n3a6
Published: 01 June 2019
... paper. In homogeneous rock, such as most sandstone formations, the value of m measured from core plugs represents the value of the formation volume investigated by logs. However, carbonate formations are usually heterogeneous due to the existence of vugs and fractures, and the value of m measured from...
Journal Articles
Journal: SPE Journal
SPE J. 24 (01): 334–348.
Paper Number: SPE-194023-PA
Published: 31 December 2018
...Yonghui Wu; Linsong Cheng; Shijun Huang; Sidong Fang; Pin Jia; Suran Wang Summary Carbonate reservoirs comprise fractures, vugs, and cavities. Vugs have a large contribution to reserves of oil and gas, and the fractures provide effective paths for fluid flow in the reservoir. The triple‐porosity...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, March 20–23, 2018
Paper Number: OTC-28493-MS
... Carbonate reservoirs are characterized of fractures, vugs and cavities. These vugs have a large attribution to reserves of oil and gas. And the fractures provide effective paths for fluids flow in the reservoir. Triple porosity model is an effective conceptual method to capturing rock matrix...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-251
... in the Grosmont reservoir; thus knowledge on the geomechanical behaviour of this material is relevant for future developments. An approach used for evaluation of geomechanical properties uses PFC3D, a discontinuum modelling software, to evaluate the effect of vug volume and shape on the uniaxial compressive...
Proceedings Papers

Paper presented at the International Oil Conference and Exhibition in Mexico, August 31–September 2, 2006
Paper Number: SPE-104076-MS
... Abstract Constant flow, rate solutions are presented for a fractured reservoir with transient interporosity flow in a convolution form, considering matrix, microfractures, vugs and fractures flow. New solutions are presented for two cases, where there is no primary flow through...
Journal Articles
SPE Res Eval & Eng 6 (04): 226–233.
Paper Number: SPE-85636-PA
Published: 01 August 2003
... insight into the way oil is distributed in the rock and the producibility of the different structures observable on the cores (matrix, vugs, and fissures). These included the cryogenic scanning electron microscope (CryoSEM) and gas chromatography (GC)-pyrolysis, pore-size-distribution measurements, SEM...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 29–October 2, 2002
Paper Number: SPE-77780-MS
... presentation vug saturation specific surface Copyright 2002, Society of Petroleum Engineers Inc. This paper was prepared for presentation at the SPE Annual Technical Conference and Exhibition held in San Antonio, Texas, 29 September 2 October 2002. This paper was selected for presentation by an SPE...
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