Upscaling for Unconventional Simulation Modelling: Barik Tight Gas Formation, Khazzan Field, Block 61, Sultanate of Oman

2016 ◽  
Author(s):  
Olubunmi Owolabi ◽  
Herbert Sebastian ◽  
William Dawson ◽  
Khalil Al Rashdi ◽  
David Spain ◽  
...  
Keyword(s):  
Simulation Modelling ◽  
Tight Gas ◽  
Sultanate Of Oman ◽  
Gas Formation ◽  
Tight Gas Formation

Multistage Hydrocarbon-Based Fracturing in Tight Gas Formation (Russian)

2020 ◽  
Author(s):  
Vladimir Astafyev ◽  
Mikhail Lushev ◽  
Alexey Mitin ◽  
Alexey Plotnikov ◽  
Evgenii Mironov ◽  
...  
Keyword(s):  
Tight Gas ◽  
Gas Formation ◽  
Tight Gas Formation

Exploration of HPHT Tight Gas Formation: First Application of Propped Fracturing in the Offshore Gulf

2015 ◽  
Author(s):  
Al Ameri F. ◽  
Al Awadhi F. ◽  
Abbott J. ◽  
Akbari A. ◽  
Daniels J.L.
Keyword(s):  
Tight Gas ◽  
Gas Formation ◽  
Tight Gas Formation

3D Modeling of Multistage Hydraulic Fractures and Two-Way-Coupling Geomechanics/Fluid-Flow Simulation of a Horizontal Well in the Nikanassin Tight Gas Formation, Western Canada Sedimentary Basin

2014 ◽  
Vol 17 (02) ◽  
pp. 257-270 ◽  
Author(s):  
Laureano Gonzalez ◽  
Gaisoni Nasreldin ◽  
Jose Rivero ◽  
Pete Welsh ◽  
Roberto Aguilera
Keyword(s):  
Hydraulic Fracturing ◽  
Horizontal Well ◽  
Three Dimensions ◽  
Hydraulic Fractures ◽  
Western Canada ◽  
Tight Gas ◽  
Western Canada Sedimentary Basin ◽  
Gas Formation ◽  
Tight Gas Formation ◽  
Canada Sedimentary Basin

Summary Unconventional gas is stored in extensive areas known as basin-centered continuous-gas accumulations. Although the estimated worldwide figures differ significantly, the consensus among the studies relating to unconventional gas resources is that the volumes are gigantic. However, the low permeability in these types of reservoirs usually results in a very low recovery factor. To help unlock these resources, this paper presents a new and more accurate way of simulating multistage hydraulic fracturing in horizontal wells in three dimensions by use of single- and dual-porosity reservoir models. In this approach, the geometry (not necessarily symmetric) and orientation of the multiple hydraulic fractures are driven by the prevailing stress state in the drainage volume of the horizontal well. Once the hydraulic-fracturing job is accurately modeled in three dimensions, two-way geomechanical coupling is used to history match the produced gas from a horizontal well drilled in the Nikanassin naturally fractured tight gas formation of the Western Canada Sedimentary Basin (WCSB). Traditionally, the most widely used approaches have their roots in semianalytical calculations simplifying the fracturing system to a planar feature propagating symmetrically away from a line source of injection. In contrast, the computed results presented in this study show that the incorporation of geomechanical effects gives a more realistic representation of the orientation and geometry of hydraulic fractures. Reduction in permeability of the natural and hydraulic fractures because of pressure depletion results in more-realistic production predictions compared with the case in which geomechanical effects are ignored. The telling conclusion, in light of the computed results, is that the field of hydraulic fracturing provides an object lesson in the need for coupled 3D geomechanical approaches. The method presented in this paper will help to improve gas rates and recoveries from reservoirs with permeability values in the nanodarcy scale.

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