Results 201 to 210 of about 2,702 (237)

Acidizing flowback optimization for tight sandstone gas reservoirs

Journal of Natural Gas Science and Engineering, 2015
Abstract The physical properties of Sichuan tight sandstone formations include low porosity and low permeability. Fortunately, micro-fractures are well developed in this area, and the development of a reservoir is thus possible. Acidification can repair reservoir damage and improve single-well production; however, gas well production can change after
Jinghong Hu, Hong Liu, Dan Wu, Junjing Zhang   +3 more
openaire   +1 more source

A gas detection factor of tight sandstones and its application

Global Meeting Abstracts, 2011
The exploration and development of tight-gas sandstone reservoirs have been paid more and more attention in recent years. However, it is difficult to identify them due to the low porosity and the slight change of geophysical characteristics caused by the change of oil and gas saturation.
Ma Zhong-gao, Zhang Jin-qiang, Li Cheng-cheng   +2 more
openaire   +1 more source

Pervasive Tight-gas Sandstone Reservoirs: An Overview

2008
The objectives of this chapter are threefold: (1) to provide a historical perspective on considerations of pervasive tight-gas accumulations, (2) to provide some observations on the present understanding of these accumulations, and (3) to anticipate where the industry is headed in the future.
Lawrence D. Meckel, M. Ray Thomasson
openaire   +1 more source

Effect of pore structure on the producibility of tight-gas sandstones

AAPG Bulletin, 2014
Abstract The estimated ultimate recovery (EUR) is one of the most significant properties of tight-gas sandstone reservoirs, but it remains difficult to predict. Estimated ultimate recovery is dependent on the success of stimulation by hydraulic fracturing, the existence and connectivity of natural fractures, and as illustrated in this
A. Sakhaee-Pour, Steven L. Bryant
openaire   +1 more source

Imaging tight gas sandstones in the East Texas Basin

First Break, 2008
Low porosity (tight) gas sands contain important commercial reserves but, unfortunately, are difficult to image seismically with the quality needed to drive an effective drilling programme. These reservoirs typically have a small contrast in acoustic impedance relative to the encasing shales which results in a subtle seismic signature.
R. Harris, J. O‘Brien
openaire   +1 more source

Acoustic measures of partial gas saturation in tight sandstones

Journal of Geophysical Research: Solid Earth, 1984
The acoustic properties of tight sandstones are very sensitive to partial gas/water saturation. Measurements at 5 kHz show that compressional velocity drops sharply with undersaturation. Extensional and shear losses at 5 kHz are large in both fully and partially saturated sands. The shear loss Qs−1 declines linearly with increasing gas content.
openaire   +1 more source

Wavelet Transform for Fracture Diagnostics in Tight Gas Sandstone

SPE Conference at Oman Petroleum & Energy Show
Abstract Accurately determining fracture closure pressure is essential for optimizing hydraulic fracture treatments in gas reservoirs, especially in tight sandstone formations with low permeability. Traditional methods, like the G-function, estimate closure pressure from pressure decline during flowback, but they often rely on ...
K. Alsiyabi, M. H. Al-Aamri, A. Kazemi, G. Nejad   +3 more
openaire   +1 more source

Tight gas sandstones rock typing

2022
Ali Kadkhodaie, Rahim Kadkhodaie
openaire   +1 more source

Dynamic Instability Characteristics of Sandstone-Mudstone Combinations During Gas Drilling in Tight Sandstone Gas Reservoirs

SPE Journal
Summary Gas drilling utilizes compressed nitrogen rather than mud as the drilling fluid to fundamentally eliminate reservoir damage, making it a highly promising technology for tight sandstone gas reservoir development. However, wellbore instability remains a significant challenge, particularly in interbedded sandstone-mudstone ...
Hongtao Li, Hao Wang, Gao Li, Yanmin Wang, Xiyu Kuang, Junjie Guo   +5 more
openaire   +2 more sources

Static and dynamic moduli of tight gas sandstones

SEG Technical Program Expanded Abstracts 1990, 1990
Diane Jizba, Gary Mavko, Amos Nur
openaire   +1 more source