Investigation of links between Precambrian basement structure and Paleozoic strata in the Fort Worth basin, Texas, U.S.A., using high-resolution aeromagnetic (HRAM) data and seismic attributes

Geophysics ◽  
2010 ◽  
Vol 75 (4) ◽  
pp. B157-B168 ◽  
Author(s):  
Olubunmi O. Elebiju ◽  
G. Randy Keller ◽  
Kurt J. Marfurt
Keyword(s):  
High Resolution ◽  
Seismic Attributes ◽  
Barnett Shale ◽  
Fort Worth ◽  
Precambrian Basement ◽  
Fort Worth Basin ◽  
The North ◽  
Basement Faults ◽  
Basement Structures ◽  
Muenster Arch

Effective hydraulic fracturing is critical for generating permeability within the Barnett Shale of the Fort Worth basin (FWB). Therefore, knowledge of the nature of the induced and natural fractures, faults, and collapse features that may form conduits to the underlying Ellenburger aquifer is vital. We use coherence and curvature seismic attributes, which are sensitive to faults, fractures, and collapse features, to map sedimentary features. We then integrate high-resolution aeromagnetic (HRAM) data with the seismic attributes extracted along the Ellenburger Formation and the top of basement from the north-central portion of the FWB, thereby linking features in the Precambrian basement to shallower sedimentary structures. HRAM-derived maps, designed to enhance basement structures, confirm that much of the sedimentary faulting is basement controlled. Specifically, attribute lineaments are aligned parallel to HRAM anomaly lineaments, consistent with regional tectonics. The northeast-southwest and northwest-southeast orientations of folds and faults in the sedimentary section parallel the northeast-trending Ouachita orogenic belt and the northwest-trending Muenster arch, which in turn correlate with reactivated Cambrian/late Precambrian basement faults. Mapping such features can aid in the design of the hydraulic fracture program and ability to predict structurally deformed areas of the basin.

A window into the Proterozoic: Integrating 3D seismic, gravity, and magnetic data to image subbasement structures in the southeast Fort Worth basin

2013 ◽  
Vol 1 (2) ◽  
pp. T125-T141 ◽  
Author(s):  
Murari Khatiwada ◽  
G. Randy Keller ◽  
Kurt J. Marfurt
Keyword(s):  
Seismic Survey ◽  
Magnetic Data ◽  
Gravity Modeling ◽  
Barnett Shale ◽  
Fort Worth ◽  
3D Seismic ◽  
Lower Paleozoic ◽  
Seismic Surveys ◽  
Fort Worth Basin ◽  
Basement Structures

The Fort Worth basin (FWB) is one of the most fully developed shale gas fields in North America. Although there are hundreds of drilled wells in the basin, almost none of them reach the Precambrian basement. Imaged by perhaps 100 3D seismic surveys, the focus on the relatively shallow, flat-lying Barnett Shale objective has resulted in little published work on the basement structures underlying the Lower Paleozoic strata. Subtle folds and systems of large joints are present in almost all 3D seismic surveys in the FWB. At the Cambro-Ordovician Ellenburger level, these joints are often diagenetically altered and exhibit collapse features at their intersections. We discovered how the basement structures relate to overlying Paleozoic reservoirs in the Barnett Shale and Ellenburger Group. In support of our investigation, the Marathon Oil Company provided a high-quality, wide-azimuth, 3D seismic data near the southeast fringe of the FWB. In addition to the seismic volume, we integrated the seismic results with gravity, magnetic, well log, and geospatial data to understand the basement and subbasement structures in the southeast FWB. Major tectonic features including the Ouachita frontal thrust belt, Lampasas arch, Llano uplift, and Bend arch surround the southeast FWB. Euler deconvolution and integrated forward gravity modeling helped us extend our interpretation beyond the 3D seismic survey into a regional context.

Log-derived thickness and porosity of the Barnett Shale, Fort Worth basin, Texas: Implications for assessment of gas shale resources

AAPG Bulletin ◽  
2015 ◽  
Vol 99 (01) ◽  
pp. 119-141 ◽  
Author(s):  
Qilong Fu ◽  
Susan C. Horvath ◽  
Eric C. Potter ◽  
Forrest Roberts ◽  
Scott W. Tinker ◽  
...  
Keyword(s):  
Barnett Shale ◽  
Fort Worth ◽  
Gas Shale ◽  
Fort Worth Basin

Errata

2020 ◽  
Vol 39 (4) ◽  
pp. 291-291
Keyword(s):  
Hydraulic Fracturing ◽  
Barnett Shale ◽  
Fort Worth ◽  
Normal Faulting ◽  
Fort Worth Basin ◽  
The Third ◽  
Mail Address ◽  
E Mail

The March 2020 TLE article by Alexandrov et al., “Normal faulting activated by hydraulic fracturing: A case study from the Barnett Shale, Fort Worth Basin,” contained an error in the third author's affiliation and e-mail address. Umair bin Waheed's correct affiliation is King Fahd University of Petroleum and Minerals, and the correct e-mail address for the author is [email protected] .

Geologic framework of the Mississippian Barnett Shale, Barnett-Paleozoic total petroleum system, Bend arch–Fort Worth Basin, Texas

AAPG Bulletin ◽  
2007 ◽  
Vol 91 (4) ◽  
pp. 405-436 ◽  
Author(s):  
Richard M. Pollastro ◽  
Daniel M. Jarvie ◽  
Ronald J. Hill ◽  
Craig W. Adams
Keyword(s):  
Petroleum System ◽  
Barnett Shale ◽  
Fort Worth ◽  
Fort Worth Basin

Modeling of gas generation from the Barnett Shale, Fort Worth Basin, Texas

AAPG Bulletin ◽  
2007 ◽  
Vol 91 (4) ◽  
pp. 501-521 ◽  
Author(s):  
Ronald J. Hill ◽  
Etuan Zhang ◽  
Barry Jay Katz ◽  
Yongchun Tang
Keyword(s):  
Barnett Shale ◽  
Fort Worth ◽  
Gas Generation ◽  
Fort Worth Basin

Attribute illumination of basement faults, examples from Cuu Long Basin basement, Vietnam and the Midcontinent, USA

2014 ◽  
Vol 2 (1) ◽  
pp. SA119-SA126 ◽  
Author(s):  
Ha T. Mai ◽  
Olubunmi O. Elebiju ◽  
Kurt J. Marfurt
Keyword(s):  
Sedimentary Basins ◽  
Fort Worth ◽  
North Texas ◽  
Fort Worth Basin ◽  
Diagenetic Alteration ◽  
Basement Faults ◽  
The Usa ◽  
Lead Zinc ◽  
Granite Basement ◽  
Osage County

Geometric attributes such as coherence and curvature have been very successful in delineating faults in sedimentary basins. Albeit not a common exploration objective, fractured and faulted basement forms important reservoirs in Southern California, Mexico, India, Yemen, and Vietnam. Basement faulting controls hydrothermally altered dolomite in the Appalachian Basin of the USA, and is suspected to play a role in diagenetic alteration of carbonates in the Fort Worth Basin of north Texas where copper has been found in some wells, as well as in Osage County, Oklahoma, not far from the classic Mississippi type lead-zinc deposits. Because of the absence of stratified, coherent reflectors, illumination of basement faults is more problematic than illumination of faults within the sedimentary column. To address these limitations, we make simple modifications to well-established vector attributes including structural dip, azimuth, and amplitude gradients, in combination with variance, and most positive and most negative principal curvature to provide greater interpreter interaction. Using these methods, we can better illuminate fracture “sweet spots” and estimate their intensity and orientation. We apply these methods to better characterize faults in the granite basement of the Cuu Long Basin, Vietnam, and the granite and rhyolite-metarhyolite basement of Osage County, Oklahoma, USA. Cuu Long forms an important unconventional reservoir. In Osage County, we suspect basement control of shallower fractures in the Mississippi chat deposits.

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