Applied Reservoir Characterization for Maximizing Reserve Growth and Profitability in Tight Gas Sands: A Paradigm Shift in Development Strategies for Low-Permeability Gas Reservoirs

2002 ◽  
Author(s):  
P.D. McKinney ◽  
J.A. Rushing ◽  
L.A. Sanders
Keyword(s):  
Paradigm Shift ◽  
Reservoir Characterization ◽  
Development Strategies ◽  
Low Permeability ◽  
Tight Gas ◽  
Gas Reservoirs ◽  
Tight Gas Sands ◽  
Reserve Growth

Complexity in tight gas sand development—an example from Perth Basin, Western Australia

2011 ◽  
Vol 51 (2) ◽  
pp. 743
Author(s):  
Reza Rezaee
Keyword(s):  
Tight Gas ◽  
Gas Reservoirs ◽  
Field Development ◽  
Fine Grained ◽  
Well Completion ◽  
Well Stimulation ◽  
Tight Gas Sands ◽  
Facies Change ◽  
Key Issues ◽  
Reservoir Geometry

One of the key issues for tight gas reservoirs is about reservoir heterogeneities and its connectivity. Knowledge of reservoir geometry, orientation, and connectedness is vital for reservoir modelling, which is the essential tool for successful field development, well completion, and well stimulation strategies. Fluvial sediments are heterogeneous both vertically and laterally due to facies change and diagenetic processes. These make their field development difficult. In terms of sand geometry and connectivity, the first step to making the reservoir model in three directions is to determine the width of sandstone bodies in various directions. Fine-grained facies associated with fluvial deposits can compartmentalise reservoirs and can significantly complicate the development of such units, as well as make well stimulation and fracturing jobs unpredictable. In this paper, the above issues are studied for some fluvial tight gas sands of the Perth Basin. The aim is to discuss the best possible way to successfully plan well and well stimulation strategies.

Improved Reservoir Characterization of Tight Gas Sands Through the 3D Integrated Reservoir Modeling of Queen City Basal, Burgos Basin, Mexico

2012 ◽  
Author(s):  
Silvano Dalessio ◽  
Luis Munoz ◽  
Alberto Jose Ochoa Lugo ◽  
Enrique Garza ◽  
Francisco Brito
Keyword(s):  
Reservoir Characterization ◽  
Reservoir Modeling ◽  
Tight Gas ◽  
Tight Gas Sands

scholarly journals Pre-acid system for improving the hydraulic fracturing effect in low-permeability tight gas reservoir

2021 ◽  
Vol 11 (4) ◽  
pp. 1761-1780
Author(s):  
Nianyin Li ◽  
Fei Chen ◽  
Jiajie Yu ◽  
Peihong Han ◽  
Jia Kang
Keyword(s):  
Hydraulic Fracturing ◽  
Filter Cake ◽  
Low Permeability ◽  
Tight Gas ◽  
Acid System ◽  
Fracturing Fluid ◽  
Gas Reservoirs ◽  
Tight Gas Reservoirs ◽  
Acid Fracturing ◽  
Performance Requirements

AbstractHydraulic fracturing is an important technical means to improve the development effect of low-permeability oil and gas reservoirs. However, for low pressure, low-permeability, tight, and high-clay sandstone gas reservoirs, conventional propped fracturing can cause serious damage to the reservoir and restrict the fracturing effect. The pre-acid fracturing technology combines acid treatment technology with sand-fracturing technology. A pre-acid system that meets special performance requirements is injected before fracturing. The pre-acid reduces the formation fracture pressure and removes clay damage. During acid flowback, the fracturing fluid is promoted to break the gel, dissolve the fracturing fluid residue and polymer filter cake, clean the supporting cracks, and effectively improve the fracturing effect. This study analyzes the process principle and technical advantages of the pre-acid fracturing technology based on the laboratory evaluation of the fracturing damage mechanism of low-permeability tight gas reservoirs. To meet the performance requirements of low-permeability tight gas reservoirs and pre-acid fracturing technology, a set of polyhydrogen acid system with long-lasting slow reactivity, low damage, and low corrosion was developed and used as the pre-fracturing acid. The acid system is mainly composed of the main agent SA601 and the auxiliary agent SA701. Then, on the basis of laboratory experiments, this acid system is used as the fracturing pre-acid to evaluate the fracturing improvement effect. The results show that the fracturing fluid system can better dissolve the fracturing fluid filter cake and remove the fracturing fluid damage.

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