Browsing by Subject "seismic characterization"
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Item Application Of Instantaneous Frequency Attribute And Gamma-Ray Wireline Log In The Delineation Of Lithology In Serbin Field, Southeast Texas: A Case Study(Society of Exploration Geophysicists (SEG) Annual Meeting, 2018-09-22) Ogiesoba, O.C.; Ambrose, W.; Loucks, R.G.Although Serbin Field in southeast Texas was discovered in 1987, lithological and petrophysical properties in the southeastern part of the field have not been fully evaluated. We generated instantaneous frequency from 3D seismic data and predicted gamma-ray response volume from seismic attributes. By extracting maps of instantaneous-frequency and gamma-ray response along interpreted horizons, and crossplotting instantaneous-frequency against gamma-ray logs and integrating core data, we generated lithology maps to identify shale-prone zones that stratigraphically trapped hydrocarbons in the southeastern part of the field. We demonstrate that Serbin Field is separated into two areas: (1) a high-frequency, high-gamma-ray, and high-acoustic-impedance area in the northwest; and (2) a low-frequency, low-gamma-ray, and low-acoustic-impedance area located in the southeast. By developing a lithologic map and relating it to the corresponding instantaneous-frequency map and log data, we also show that the southeastern part of the field can be divided into three zones: (1) Zone 1, composed of ~2–8 ft (~0.7–2.7 m)-thick sandstone-rich beds of moderate frequency (25–30 Hz); (2) Zone 2, composed of high-frequency (33–60 Hz) shale-rich zones that serve as stratigraphic-trapping mechanisms; and (3) Zone 3, composed of ~5–13 ft (~1.7–4 m)-thick sandstone-rich beds of low frequency (0–18 Hz), and relatively high porosity. These methods can be applied in other areas of the field with limited well control.Item Identification Of Sandstone-Rich Zones In Upper Bathyal, Deepwater Environment On South Texas Gulf Coast(International Meeting for Applied Geoscience & Energy (IMAGE), 2021-09-26) Ogiesoba, O.C.; Zeng. H.Item Seismic attributes investigation of depositional environments and hydrocarbon sweet spot distribution in Serbin field, Taylor Group, Central Texas(Society of Exploration Geophysicists (SEG) Annual Meeting, 2017-09-24) Ogiesoba, O.C.; Ambrose, W.A.Item Seismic Multiattribute Analysis for Shale Gas/Oil within the Austin Chalk and Eagle Ford Shale in a Submarine Volcanic Terrain, Maverick Basin, South Texas(American Association of Petroleum Geologists (AAPG) Geoscience Technology Workshop (GTW), 2014-02-24) Ogiesoba, O.C.Item Seismic Reservoir Characterization Of The Strawn Group, Northern Part Of The Eastern Shelf, King County, North-Central Texas: Case Study(International Meeting for Applied Geoscience & Energy (IMAGE), 2023-08-23) Ogiesoba, O.C.This abstract discusses the results of combined poststack attri- butes and neural network procedures applied to the Strawn Group in the northern part of the Eastern Shelf in King County, North-Central Texas, covering an area of approximately 162 square miles (420 square kilometers). Although facies variability within the Strawn Group in King County has been described (e.g., Hattori and Flaig, 2023), the variations in elastic properties of carbonate facies have not been fully investigated. By combining a poststack model-based acoustic impedance, multiattributes and neural network procedures to predict veloci- ty ratios (Vp/Vs ratios), I show that although Strawn Group car- bonates are characterized by high impedance, they nevertheless can be separated into three main facies: (1) Platform carbonates in which Vp/Vs ratios vary from ~1.94 to 2.02, (2) Shelf-edge reef carbonates where Vp/Vs ratios are >2.02, and (3) Basinal and slope carbonates which are characterized by low Vp/Vs ratios ranging from ~ 1.88 to 1.96.Item Simultaneous seismic inversion study of the northern part of the Eastern Shelf, King County, North Central Texas(American Association of Petroleum Geologists Southwest Section (AAPG SWS), 2021-06-26) Ogiesoba, O.C.; Deans, J.; Cortez, T.