Multi-Site Application of the Geomechanical Approach for Natural Fracture Exploration

摘要: In order to predict the nature and distribution of natural fracturing, Advanced Resources Inc. (ARI) incorporated concepts rock mechanics, geologic history, local geology into a geomechanical approach for fracture prediction within mildly deformed, tight (low-permeability) gas reservoirs. Under auspices this project, ARI utilized refined in reservoir characterization exploratory activities three basins: Piceance, Wind River Anadarko. The primary focus report is knowledge gained on fractural along with practical applications enhancing recovery commerciality. Of importance formation production are two broad categories fractures: (1) shear related fractures (2) extensional (opening mode) fractures. While arising from different origins type differentiation based morphology sometimes inter related. Predicting successfully largely function collecting understanding available relevant data conjunction methodology appropriate origin. Initially envisioned as use elastic mechanics methods project fracturing (low permeability) Technical issuesmore » inconsistencies during prompted re-evaluation these initial assumptions. ARI's philosophy tools was one heuristic development through field site testing iterative enhancements make it better tool. technology underlying were considerably course project. As any new tool, there substantial learning curve. Through approach, addressing discoveries additional software resulted stronger set tools. Thus, outcome predictive applicability across low permeability basins where play an important role permeability. Potential uses learnings range rank exploration field-development portfolio management. Early incorporation presented here can improve basin assessment direct high potential areas basins. Insight variability inherent naturally fractured reservoirs leads improved wellbore evaluation reduces incidence premature exits plays. A significant conclusion that fractures, while often important, overlooked aspect geology, represent only overall fabric. balanced perspective encompassing all aspects will have greatest impact setting.« less