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Dravis
Interests, Inc.
Fields of Specialization and Projects
Carbonate Sedimentology
- Modern carbonate depositional systems and models
- Ancient carbonate depositional systems and models
- Facies reconstruction from outcrops, cores and cuttings
- Stratigraphic sequences and regional correlation
- Deep-water carbonates, including chalks
- Petroleum carbonate play relationships
- Petroleum reservoir description and zonation
Carbonate Petrology
- Standard thin section and SEM analyses
- Diagenetic processes and products
- Diagenetic environments
- Porosity evolution and implications for petroleum reservoir development
- Newer enhanced petrographic techniques (fluorescence microscopy/diffused plane-polarized light)
- Applications of carbonate geochemistry
Regional Integrated Studies and Basin Analysis
Teaching Basic and Advanced Seminars in Carbonate Geology
Expert Witness in Oil and Gas Litigation
CONSULTING PROJECTS
- Petrographic evaluation/documentation of thin section data from the Permian Khuff Formation, Qatar (2005-current; ConocoPhillips, Inc., Houston).
- Core and petrographic evaluation of Permian Wolfcampian, Clearfork and San Andres reservoirs, west Texas(2006-current; Trek Oil & Gas, Houston).
- Evaluation of Jurassic Smackover Samples, northern Louisiana (2006-current; Greystone Oil & Gas, Houston).
- Evaluation of the depositional facies, diagenesis and porosity evolution of core samples from the Upper Devonian Jean Marie Formation, Western Canada (2006-current; Encana Corporation, Calgary, Alberta).
- Petrographic evaluation of Mississippian carbonates from the Banff Formation, Alberta (2006; Suncor Energy, Calgary, Alberta).
- Review of Paleocene carbonate play concepts, Sirte Basin, Libya (2006; Occidental Oil & Gas, Houston).
- Diagenesis and porosity evolution of Permian gas reservoirs and controls on paleotraps, Khorat Plateau, Thailand (2005-2006; APICO/NuCoastal, Denver, Colorado).
- Depositional and diagenetic controls on porosity evolution, Mississippian Debolt dolostones, NE British Columbia (2005; Devon Energy, Inc., Calgary).
- Depositional and diagenetic controls on porosity evolution, Devonian Slave Point Formation, NE British Columbia (2005; BG Canada Exploration and Development, Inc., Calgary).
- Evaluation of the hydrocarbon potential of Tertiary and Cretaceous sequences on Saba Bank, offshore Anguilla (2005; Anguilla Capital Corporation, Anguilla, Dutch West Indies).
- Evaluation of the depositional facies, diagenesis and porosity evolution of Pennsylvanian Marble Falls Formation carbonate sidewall cores from the Bend Arch area, Ft. Worth Basin, Stephens County, Texas (2005; McClymond Ltd, Breckenridge, Texas).
- Petrological evaluation of Cretaceous Georgetown Formation cuttings samples from Dimmit County, Texas (2005; ECL Blue Star Operating Co., Dallas).
- Depositional facies, diagenesis, and controls on porosity evolution, Mississippian Elkton dolostones, western Canada (2005; Suncor Energy, Inc., Calgary).
- Depositional and diagenetic controls on porosity evolution, Mississippian Debolt dolostones, NE British Columbia (2005-current; Devon Energy, Inc., Calgary).
- Depositional facies, diagenesis, and controls on porosity evolution, Mississippian Elkton dolostones, western Canada (2005; Suncor Energy, Inc., Calgary).
- Evaluation of Tertiary reef prospects, offshore Nicaragua (2004-current; Energy Partners, Ltd, Houston).
- Potential oolitic sand plays on the Scotian Shelf - observations and analogues (2004; Encana Corporation, Calgary).
- Evaluation of surface encrusters on marine hardgrounds, and composition of sediment samples, offshore Morocco seamount (2004; Omni, Houston).
- Petrology of selected Mississippian Banff samples, western Canada (2004; Suncor Energy, Inc., Calgary).
- Prospect evaluation of Cretaceous carbonate plays in the Maverick Basin, southwest Texas (2004; Vintage Petroleum, Tulsa).
- Evaluation of the depositional facies, diagenesis and porosity evolution of Pennsylvanian Marble Falls Formation carbonates and cherts from the Bend Arch area, Ft. Worth Basin, Stephens County, Texas (2004; McClymond Ltd, Breckenridge, Texas).
- Petrological evaluation of samples from the Blue Star Operating Co. Taylor 1-132 well, Maverick County, Texas (2003-2004; ECL Consulting & Blue Star Operating Co. Houston and Dallas).
- Diagenesis and porosity evolution of Jurassic Abenaki carbonates in Well-70, Panuke Field, offshore Nova Scotia - integrated petrography and geochemistry (2003-2004; Encana Corporation, Calgary).
- Evaluation of Devonian pinnacle reef play potential in the Black Warrior Basin, Alabama (2003; SKH Inc., Houston).
- Documentation of depositional facies, diagenesis and reservoir quality in the Pennsylvanian upper Topeka limestones of the Taylor B-4 well, Oklahoma (2003; OXY USA, Houston).
- Regional facies and play relationships in the Cretaceous Glen Rose Formation, Maverick Basin, South Texas (2001-2003; Doughtie Exploration; The Exploration Company; Saxet Energy, Houston).
- Evaluation of Silurian and Devonian reservoir potential in the Black Warrior Basin of Alabama (2003; Fairways Offshore Exploration, Houston).
- Depositional setting and porosity evolution of Devonian Swan Hills Formation, western Canada (2003; Burlington Resources, Calgary).
- Depositional facies, diagenesis and porosity evolution of Devonian Blueridge dolostones, western Canada (2003; Burlington Resources, Calgary).
- Evaluation of depositional facies and reservoir quality in the Mississippian Banff Formation, western Alberta, Canada (2003; Suncor Energy, Calgary).
- Petrographic evaluation of Devonian limestone and dolostone reservoirs, Slave Point Formation, Canada (2003; ENCANA Corporation, Calgary).
- Evaluation of cores from Nexen’s Viosca Knoll 610 well, Cretaceous James Limestone, western Florida Platform, Louisiana State waters ( 2002-2003; Nexen Petroleum, Dallas).
- Facies and reservoir quality expressed in rotary cores of Cretaceous James and Rodessa limestone sequences, Louisiana (2002-2003; El Paso Production, Houston).
- Evaluation of Cretaceous Main Pass wells and implications for James Limestone prospects along the western Florida Platform (2002; Nexen Petroleum, Dallas). Depositional facies and reservoir quality in the Mississippian Banff Formation, western Alberta, Canada (2002; Suncor Energy, Calgary).
- Origin of dolomitization and associated porosity, Slave Point Formation, Beaverhill Lake Group, Canada (2001; Husky Energy, Calgary).
- Controls on reservoir quality in lower Paleozoic Bromide dolostones, Wilburton Field, Oklahoma (2001; BP-AMOCO, Houston).
- Evaluation of depositional facies and controls on James Limestone reservoir quality, Well VK 565#1, Eastern Gulf of Mexico (2001; Nexen Petroleum, Dallas)
- Diagenesis and porosity evolution of Jurassic Abenaki carbonates, Panuke Field, offshore Nova Scotia - implications for controls on reservoir quality (2001; PanCanadian, Calgary)
- Depositional facies and porosity evolution of upper Devonian sequences from cuttings, western Canada (2001; PanCanadian Petroleum, Calgary).
- Documentation of regional play relationships, Blueridge Formation, western Canada (2001; Suncor Energy, Calgary).
- Controls on porosity evolution of Leduc dolostones, western Canada (2000; PanCanadian Petroleum, Calgary).
- Play evaluation for the upper Cretaceous Nafoora-Augila Field, Libya (2000; Occidental Oil and Gas, Houston).
- Depositional facies and controls on porosity evolution of Devonian Blueridge dolostones, western Canada (2000; Post Energy, Calgary).
- Depositional setting and porosity evolution of Devonian Swan Hills Formation, western Canada (2000; Coastal Oil and Gas, Calgary).
- Evaluation of depositional and structural controls on reservoir development, Cretaceous Glen Rose Formation, Maverick Basin, Texas (2000; The Exploration Company, San Antonio).
- Depositional facies and reservoir quality, Mississippian Banff Formation, western Alberta, Canada (2000; PanCanadian Petroleum, Calgary).
- Depositional facies and reservoir quality, Devonian Wabamun Formation, western Alberta, Canada (2000; PanCanadian Petroleum, Calgary).
- Evaluation of a Paleocene chalk play, southeast Louisiana (2000; AEC, Calgary)
- Regional evaluation of the Upper Jurassic Haynesville Formation, Overton Field Area, East Texas: controls on play development in oolitic sands (1999 - 2000; Pioneer Natural Resources, Dallas).
- Evaluation of the Cretaceous James Limestone, eastern Gulf of Mexico, offshore Mississippi (1999; OXY USA, Houston).
- Determination of depositional facies and reservoir quality from cuttings of the Pettet Formation, Pioneer Natural Resources Arp Gas Unit #1 Well and UPRC Hammerhead Well, Smith County, Texas (1999; Pioneer Natural Resources, Dallas).
- Controls on play development in the Mississippian Elkton Formation dolomites, western Alberta (1999; Suncor Energy, Calgary).
- Evaluation of Jurassic Abenaki Formation samples from offshore Nova Scotia, Canada: depositional facies, porosity evolution and play potential (1999; PanCanadian Petroleum, Calgary).
- Petrology of Devonian Wabamun and Blueridge samples from western Alberta, with emphasis on depositional setting and reservoir quality (1999; PanCanadian Petroleum, Calgary).
- Depositional setting, diagenesis and porosity evolution of selected samples from the Mississippian Pekisko and Banff Formations, western Canada (1999; PanCanadian Petroleum, Calgary [two separate studies]).
- Petrographic determination of depositional environments and reservoir quality of Devonian Wabamun core and cuttings samples, western Canada (1999; Suncor Energy, Calgary).
- Depositional facies and physiographic setting of massive Devonian Swan Hills dolomites, western Canada (1999; Suncor Energy, Calgary).
- Diagenetic history and controls on porosity evolution of Devonian Swan Hills and Blueridge Formations, western Canada (1999; Suncor Energy, Calgary).
- Petrographic evaluation of Cretaceous samples from the Neuquen Basin, Argentina (1999; Unocal, Houston).
- Preliminary evaluation of the diagenetic history of Cretaceous carbonates, Block 9, offshore Angola (1998; Texaco, Houston).
- Depositional facies and diagenetic history of Leduc and Wabamun limestones and dolomites from Alberta, Canada (1998; PanCanadian Petroleum, Calgary).
- Diagenetic influences on the log response of Swan Hills dolomites, Alberta, Canada
- (1998; Suncor Energy Inc., Calgary).
- Controls on reservoir quality, Wabamun Formation, Alberta, Canada (1998; AEC West, Calgary).
- Depositional facies and reservoir quality of the Cretaceous Edwards #1 J.V. Isaacks well, Live Oak County, Texas (1998; Hanson Production Company, San Antonio).
- Smackover depositional facies and reservoir quality, east Texas (1998; Wagner & Brown, Houston).
- Petrographic evaluation of Tertiary limestones from the Andaman Sea (1998; UNOCAL, Houston).
- Play potential of Cretaceous Albian carbonates, offshore Angola (1997 - 98; Mobil Oil New Exploration Ventures, Dallas).
- Evaluation of the reservoir potential of the Devonian Wabamun and Swan Hills Formations, Alberta, western Canada (1997; Suncor Energy, Inc., Calgary).
- Petrographic evaluation of the facies, diagenesis, and porosity evolution of the upper Devonian Jean Marie and Wabamun Formations, N.E. British Columbia (1997; PanCanadian Petroleum, Calgary).
- Petrographic evaluation of the facies, diagenesis, and porosity evolution of the upper Devonian Jean Marie Formation, N.E. British Columbia (1997; Wascana Energy, Calgary).
- Evaluation of Jurassic and lower Cretaceous plays in the Rovuma Basin from seismic data, Mozambique (1997; Lonropet, Australia).
- Facies, depositional cyclicity, and porosity evolution of the Cretaceous Sunniland Field, Collier County, south Florida (1996-97; Plains Resources, Houston).
- Petrographic evaluation of the facies, diagenesis, and porosity evolution of the Slave Point Formation, Alberta, Canada (1996-97; Wascana Energy, Inc., Calgary).
- Controls on play development in the Devonian Wabamun sequence, Alberta, Canada
- (1996-97; Wascana Energy, Inc., Calgary).
- Core study of facies and reservoir quality, Sunniland Formation, south Florida (1996; Meridian Oil and Plains Resources, Houston).
- Evaluation of Pennsylvanian dolomites, Four Corners Platform, New Mexico and Colorado (1994-96; Meridian Oil, Houston).
- Evaluation of Devonian Slave Point Dolomite Plays, N.E. British Columbia (1995; Poco Petroleums, Calgary).
- Regional evaluation of Cretaceous Edwards limestones, S. Texas (1995; Anadarko, Houston).
- Petrographic evaluation of the facies, diagenesis, and porosity evolution of the upper Devonian Jean Marie Formation, N.E. British Columbia (1995; Wascana Energy, Calgary).
- Petrographical evaluation of the Wristen Formation, West Devonian Field, Yoakum County, Texas (1995; Apache Corporation, Houston).
- Thin section petrography of Jurassic Arenque Field, Offshore Mexico (1994; Pemex).
- Evaluation of the Cretaceous Isis Reef Reservoir, Offshore Tunisia (1993-94; Samedan International, Houston).
- Evaluation of Devonian Reservoirs in Timan-Pechora Basin, Russia (1992-93; Saga
- Petroleum; Shell International; Oslo and The Hague).
- Facies and Porosity Evolution of Ordovician Carbonates from the Appalachian Basin
- (1993; Meridian Oil, Houston).
- Regional Evaluation of the Stuart City (Edwards) Reef Trend in South Texas (1991-92).
- (project as expert witness in oil and gas litigation).
- Timing of Porosity Development in the Ellenburger Group, West Texas and Evaluation of the Subaerial Karst Model (1990-91; Canadian Hunter Ltd., Calgary).
- Regional Facies, Depositional Cyclicity and Reservoir Quality of Upper Pennsylvanian Carbonates on the Eastern Shelf and Horseshoe Atoll area, Texas (1990-91; Canadian Hunter, Calgary).
- Evaluation of Reservoir Quality in the Smackover Formation, Alabama and Mississippi (1990-91; Canadian Hunter Ltd., Calgary).
- Evaluation of Reservoir Quality in Cretaceous Sligo Carbonates, South Texas (1990; Canadian Hunter, Calgary).
- Evaluation of the Diagenesis and Reservoir Quality of Selected Samples from the Arbuckle Group, Arkoma Basin, Oklahoma and Arkansas (1990; Exploration Methods Inc., Denver).
- Diagenesis of Middle Devonian Reservoirs and Controls on Pool Entrapment, Rainbow Subbasin, Western Canada (1989-90; for Esso Resources Canada Ltd., Calgary)
- Evaluation of Reservoir Quality in Cenozoic Carbonates from New Zealand (1989).
- Evaluation of Facies and Reservoir Quality of Pennsylvanian Dolomitized Cuttings Using Fluorescence Microscopy (1989; Fina, Midland).
- Regional Jurassic and Cretaceous Carbonate Play Evaluation of the Eastern Gulf of Mexico (1988; for BHP Americas, Houston).
- Reservoir Evaluation of the Permian San Andres Seminole Field, Gaines County, Texas (1987-88; for Amerada Hess, Marathon and Arco, Littleton, Colorado)
Dravis Interests and Dravis Geological Services can be contacted by email, by phone at (713) 667-9844, or by mail at 4133 Tennyson St., Houston, Tx 77005-2749.