HETEROGENITY OF CLASTIC PROVENANCE TO THE PENNSYLVANIAN ANADARKO BASIN AND IMPLICATIONS FOR PALEOGEOMORPHOLOGY

2017 ◽  
Author(s):  
B. Kushner ◽  
◽  
G.S. Soreghan ◽  
M.J. Soreghan
Keyword(s):  
Anadarko Basin ◽  
Clastic Provenance

The presence of 18α(H)-oleanane in Pennsylvanian and Mississippian rocks in the Anadarko Basin, Oklahoma

2021 ◽  
pp. 104181
Author(s):  
Paul Philp ◽  
Matthew Wood ◽  
Yagmur Sumer Gorenekli ◽  
Thanh Nguyen ◽  
Carl Symcox ◽  
...  
Keyword(s):  
Anadarko Basin ◽  
Mississippian Rocks

Techniques for Successful Liner Cementing in the Anadarko Basin

1984 ◽  
Author(s):  
R.E. Muncrief ◽  
R.E. LaFollette ◽  
C.G. Rainbolt
Keyword(s):  
Anadarko Basin

Two-dimensional elastic pseudo-spectral modeling of wide-aperture seismic array data with application to the Wichita Uplift-Anadarko Basin region of southwestern Oklahoma

1990 ◽  
Vol 80 (6A) ◽  
pp. 1677-1695 ◽  
Author(s):  
Ik Bum Kang ◽  
George A. McMechan
Keyword(s):  
Large Scale ◽  
Deep Structure ◽  
Sedimentary Basins ◽  
P Wave ◽  
Two Dimensional ◽  
Anadarko Basin ◽  
Near Surface ◽  
University Of Texas ◽  
Wide Aperture ◽  
The University

Abstract Full wave field modeling of wide-aperture data is performed with a pseudospectral implementation of the elastic wave equation. This approach naturally produces three-component stress and two-component particle displacement, velocity, and acceleration seismograms for compressional, shear, and Rayleigh waves. It also has distinct advantages in terms of computational requirements over finite-differencing when data from large-scale structures are to be modeled at high frequencies. The algorithm is applied to iterative two-dimensional modeling of seismograms from a survey performed in 1985 by The University of Texas at El Paso and The University of Texas at Dallas across the Anadarko basin and the Wichita Mountains in southwestern Oklahoma. The results provide an independent look at details of near-surface structure and reflector configurations. Near-surface (<3 km deep) structure and scattering effects account for a large percentage (>70 per cent) of the energy in the observed seismograms. The interpretation of the data is consistent with the results of previous studies of these data, but provides considerably more detail. Overall, the P-wave velocities in the Wichita Uplift are more typical of the middle crust than the upper crust (5.3 to 7.1 km/sec). At the surface, the uplift is either exposed as weathered outcrop (5.0 to 5.3 km/sec) or is overlain with sediments of up to 0.4 km in thickness, ranging in velocity from 2.7 to 3.4 km/sec, generally increasing with depth. The core of the uplift is relatively seismically transparent. A very clear, coherent reflection is observed from the Mountain View fault, which dips at ≈40° to the southwest, to at least 12 km depth. Velocities in the Anadarko Basin are typical of sedimentary basins; there is a general increase from ≈2.7 km/sec at the surface to ≈5.9 km/sec at ≈16 km depth, with discontinuous reflections at depths of ≈8, 10, 12, and 16 km.

scholarly journals Stratigraphic variability of Mississippian Meramec chemofacies and petrophysical properties using Machine Learning and geostatistical modeling,STACK trend, Anadarko Basin, Oklahoma

2021 ◽  
pp. 1-59
Author(s):  
Laynie Hardisty ◽  
Matthew J. Pranter ◽  
Deepak Devegowda ◽  
Kurt J. Marfurt ◽  
Carl Sondergeld ◽  
...  
Keyword(s):  
Water Saturation ◽  
Development Planning ◽  
Effective Porosity ◽  
Well Logs ◽  
Blind Test ◽  
Cross Sectional ◽  
Anadarko Basin ◽  
Rock Types ◽  
Calcite Cement ◽  
Stacking Patterns

Mississippian Meramec deposits and reservoirs in the Sooner Trend in the Anadarko (Basin) in Canadian and Kingfisher counties (STACK) play of central Oklahoma are comprised of silty limestones, calcareous sandstones, argillaceous-calcareous siltstones, argillaceous siltstones, and mudstones. We have used core-derived X-ray fluorescence (XRF) data and established environmental proxies to evaluate the occurrence of specific elements (Al, K, Ti, Zr, Sr, Ca, and Si) and to illustrate their stratigraphic variability. For the Mississippian Meramec, six indicator elements or element ratios serve as proxies for clay (Al and K), detrital sediment (Ti and Zr), carbonate deposits (Sr and Ca), calcite cement (Sr/Ca), and biogenic and continentally derived quartz (Si/Ti and Si/Al). We used an unsupervised K-means classification to cluster elemental data from which we interpret three chemofacies: (1) calcareous sandstone, (2) argillaceous-calcareous siltstone, and (3) detrital mudstone. We used a random forest approach to relate core-derived chemofacies to well logs and classify chemofacies in noncored wells with an accuracy of up to 83% based on blind test results. We integrated core-derived XRF, conventional well logs, and chemofacies logs to produce a dip-oriented cross-sectional chemofacies model that trends from the northwest to the southeast across the southern STACK trend. Meramec chemofacies distributions reflect parasequence stacking patterns. The stratigraphic variability of chemofacies indicates an upward increase of argillaceous detrital mudstone from parasequences 1 to 3. Parasequence 3 is capped by a maximum flooding surface. From parasequences 4 to 5, an increase in argillaceous-calcareous siltstone and calcareous sandstone reflects the progradational stacking. Porosity is relatively low in calcareous sandstones primarily due to calcite cement. Water saturation is high in argillaceous-calcareous siltstone, moderate in calcareous sandstone, and low in detrital mudstone. Within the Meramec, biogenic quartz is associated with drilling issues, specifically frequent bit trips due to its hardness. Interpreted biogenic quartz from element profiles corresponds to the calcareous sandstone chemofacies, which can be estimated from triple-combo well logs and can be mapped. Effective porosity and water saturation models reflect the stratigraphic variability of chemofacies and rock types and can be predicted within the defined chemostratigraphic framework. Understanding the spatial variability of effective porosity and water saturation is important for reservoir development planning.

Seismic illumination of small-offset seismogenic faults, Anadarko Basin, Oklahoma

2021 ◽  
pp. 1-50
Author(s):  
Swetal Patel ◽  
Folarin Kolawole ◽  
Jacob I. Walter ◽  
Xiaowei Chen ◽  
Kurt J. Marfurt
Keyword(s):  
Focal Mechanism ◽  
Seismic Attributes ◽  
Seismic Monitoring ◽  
Set Covering ◽  
Structural Deformation ◽  
Data Set ◽  
Anadarko Basin ◽  
Seismic Reflection Data ◽  
The Past ◽  
Basement Faults

In the past decade across the Central and Eastern U.S., there has been a substantial increase in the seismicity rate, which scientists broadly attribute to wastewater disposal and, to a lesser extent, hydraulic fracturing. Active clusters of seismicity illuminate linear fault segments within the crystalline basement that were unknown until seismicity began. Such surprises are due to the limited availability of 3D surface seismic surveys and the difficulty of imaging relatively shallow earthquake events from sparse seismic monitoring arrays. The Sooner Trend Anadarko Basin Canadian Kingfisher Counties (STACK) play of Central Oklahoma provides an opportunity to map such basement faults. Modern high-quality surface seismic data acquired to map the Meramec and Woodford unconventional resource plays enable us to image the basement faults and intrusions. Furthermore, because of increased earthquake risk from anthropogenic activities in the past decade, state regulatory agencies have deployed a relatively dense array of seismic monitoring stations, which allows us to integrate earthquake data into subsurface fault analysis. We have mapped structural deformation using a suite of seismic attributes, including multispectral coherence, volumetric curvature, and aberrancy, in a 3D seismic reflection data set covering 625 sq mi of the STACK area of the Anadarko Basin, Oklahoma. To unravel the relationship between the structures and seismicity, we use relocated locally recorded earthquakes and compute the focal mechanism solution for the relocated events. Our results reveal previously unmapped fault segments with dominant north–south, northwest, and northeast trends, most of which extend into the shallower sedimentary Hunton and Woodford Formations. Because of the small offset, we find that aberrancy and the curvature attribute best illuminate the basement-rooted faults in the study area. Fault segments with significant offset are better illuminated by band-limited multispectral coherence. We argue that the inherited structure of these faults makes them easily illuminable by flexure-related seismic attributes, especially within the sedimentary cover. The integration of the illuminated faults with relocated earthquakes and focal mechanism solutions shows that some of the illuminated faults that have hosted intrasedimentary and/or basement seismicity are reactivated strike-slip faults. We hypothesize that careful attribute mapping of faults and flexures, coupled with an understanding of the local stress and geomechanical properties, calibrated with recent seismic activity in the area, can help mitigate seismic hazards in tectonic settings where small-offset faults predominate.

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