Granite Wash Workshop

Drilling Granite Wash wells has dramatically increased since 2009. Approximately 2200 horizontals have been drilled targeting the Missourian, Des Moinesian and Atokan Granite Wash Zones in Oklahoma and the Texas Panhandle. Problems of nomenclature make it necessary to communicate the reservoir or zone that one is referencing when talking too their operators. This is best accomplished by referencing a type well. As of now, operators are targeting the more liquids-rich sections of the Granite Wash. Numerous deeper targets that are composed of lean gas in the Lower Des Moinesian and Atokan sections await more development. As gas prices increase, these additional zones will become drilling targets. Each of the zones is a correlatable and mappable unit. However, this macro-mapping belies the fact that these units are complex. The different Granite Wash units vary rapidly along and across depositional strike. We need to continue to study and develop processes to identify these complexities and how to deal with them to produce the economic results that we strive to achieve. A review of the geology in this workshop will aid in the understanding of this complex formation. What are the rocks telling us in regards to mineralogy and permeability? How are the depositional patterns and resulting geometric bodies interpreted by the geologist?

The industry continually learns and improves on the hydraulic fracturing techniques that work for this formation. Seismic and microseismic are invaluable due to the presence of faulting and frac barriers between zones which affect completions and production results. What are the petrophysical complexities of this formation and how do we approach the analysis to predict drilling locations and improve completion methods? This workshop will aid in shedding light on petrophysical analysis. What is the source of oil and condensate that occurs in the Granite Wash? This workshop will attempt to answer that question. Presentations will emphasize the geologic, petrographic, geochemical and engineering factors that benefit the production of hydrocarbons from tight Granite Wash zones.

Workshop Information Flyer (PDF)

Workshop Brochure (PDF)

Program Agenda (PDF)

Stratigraphy and Hydrocarbon Production from Pennsylvanian Age Granite Wash Reservoirs in the Western Anadarko Basin, Oklahoma and Texas (PDF)
John Mitchell, Consulting Geologist

Post-Appraisal of the Missourian Hogshooter Hydrocarbon System: Implications for Future Exploitation in the Anadarko Basin (PDF)
Steven Hoaglund, Chesapeake Energy

Predicting Initial Production of Granite Wash Horizontal Wells Using Old Well Logs and Core (PDF)
Jerome Truax, Linn Energy

Seismic Integration of the Colony Granite Wash (PDF)
Mike Miller, Chesapeake Energy

Possible Sources of Granite Wash Oils Based on Geochemical Data (PDF)
Paul Philp, The University of Oklahoma

Granite Wash; Where Engineering and Geology Collide; An Unstoppable Force Meets An Immovable Object (PDF)
Bill Grieser and Carla Eichler, Halliburton

Granite Wash Optimization - Validating Completion and Production Techniques (PDF)
Elspeth Crawford, Linn Energy

Influence of Thermal Maturity on Organic Shale Microstructure (PDF)
Jamie Rich, The University of Oklahoma