Browsing by Subject "Miocene"
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Item Atlas of Northern Gulf of Mexico Gas and Oil Reservoirs - Volume 1. Miocene and Older Reservoirs, Play Analysis Procedures(1995) Seni, Steven J.; Desselle, Bruce A.; Tremblay, Thomas A.This report summarizes activities conducted during the second year of the Northern Gulf of Mexico Oil and Gas Resource Atlas Series program. Funded by the Gas Research Institute, the U.S. Department of Energy, and the U.S. Department of the Interior's Minerals Management Service, investigations began in October 1992, with the Bureau of Economic Geology as the lead technical contractor. The objective of this program is to develop an atlas of hydrocarbon plays by integrating geologic and engineering data for oil and gas reservoirs with large-scale patterns of depositional basin fill and geologic age. The oil and gas atlas of the Gulf of Mexico will provide a critically compiled, comprehensive reference, which is needed to more efficiently develop reservoirs, to extend field limits, and to better assess the opportunities for intrafield exploration. The play atlas series will provide an organizational framework to aid development in mature areas and to extend exploration paradigms from mature areas to frontier areas deep below the shelf and into deep waters of the continental slope. In addition to serving as a model for exploration and education, the offshore atlas will aid resource assessment efforts of State, Federal, and private agencies by allowing for greater precision in the extrapolation of variables within and between plays. Classification and organization of reservoirs into plays have proved to be effective in previous atlases produced by the Bureau, including the Texas oil (Galloway and others, 1983) and gas atlases (Kosters and others, 1989), the central and eastern Gulf Coast gas atlas (Bebout and others, 1992), and the Midcontinent gas atlas (Bebout and others, 1993).Item Characterization of the High Island 24L Field for modeling and estimating CO₂ storage capacity in the offshore Texas state waters, Gulf of Mexico(2019-07-25) Ruiz, Izaak; Meckel, Timothy AshworthCarbon, Capture, and Storage (CCS) is considered an essential technology that can contribute to reaching the IPCC’s target to limit global average temperature rise to no more than 2.0°C. The fundamental purpose of CCS is to reduce anthropogenic CO₂ emissions by capturing gas from large point sources and injecting it into deep geologic formations. In the offshore Texas State Waters (10.3 miles; 16.6 kilometers), the potential to develop CO₂ storage projects is viable, but the size of storage opportunity at the project level is poorly constrained. This research characterizes the High Island 24L Field, a relatively large historic hydrocarbon field, that has produced mainly natural gas (0.5 Tcf). The primary motivation for this study is to demonstrate that depleted gas fields can serve as volumetrically significant CO₂ storage sites. The stratigraphy of the inner continental shelf in the Gulf of Mexico has been extensively explored for hydrocarbon for over 50 years, and this area is well suited for CCS. Lower Miocene sandstones beneath the regional transgressive Amphistegina B shale have appropriate geologic properties (porosity, thickness, extent) and can be characterized utilizing 3D seismic and well logs in this study. Identifying key stratigraphic surfaces, faults, and mapping structural closure footprints illustrates the field’s geologic structure. The interpreted stratigraphic framework can then be used to model three different lithologic facies and effective porosity to calculate CO₂ storage capacity for both the ~200-ft (60-m) thick HC Sand (most productive gas reservoir) and the overlying thicker 1700 ft (520 m), but non-productive, Storage Interval of Interest. Four different methodologies are utilized to achieve confidence in the CO₂ storage capacity estimates. A storage capacity of 15 – 23 MT is calculated for the HC Sand and 108 – 179 MT for the Storage Interval of Interest by applying interpreted efficiency factors. This study evaluates the accuracy of these storage capacity methodologies to better understand the key geologic factors that influence CO₂ storage in a depleted hydrocarbon field for CCSItem Empirical analysis of fault seal capacity for CO₂ sequestration, Lower Miocene, Texas Gulf Coast(2012-05) Nicholson, Andrew Joseph; Meckel, Timothy Ashworth; Tinker, Scott W. (Scott Wheeler); Trevino, Ramon H.; Steel, Ronald J.The Gulf Coast of Texas has been proposed as a high capacity storage region for geologic sequestration of anthropogenic CO₂. The Miocene section within the Texas State Waters is an attractive offshore alternative to onshore sequestration. However, the stratigraphic targets of interest highlight a need to utilize fault-bounded structural traps. Regional capacity estimates in this area have previously focused on simple volumetric estimations or more sophisticated fill-to-spill scenarios with faults acting as no-flow boundaries. Capacity estimations that ignore the static and dynamic sealing capacities of faults may therefore be inaccurate. A comprehensive fault seal analysis workflow for CO₂-brine membrane fault seal potential has been developed for geologic site selection in the Miocene section of the Texas State Waters. To reduce uncertainty of fault performance, a fault seal calibration has been performed on 6 Miocene natural gas traps in the Texas State Waters in order to constrain the capillary entry pressures of the modeled fault gouge. Results indicate that modeled membrane fault seal capacity for the Lower Miocene section agrees with published global fault seal databases. Faults can therefore serve as effective seals, as suggested by natural hydrocarbon accumulations. However, fault seal capacity is generally an order of magnitude lower than top seal capacity in the same stratigraphic setting, with implications for storage projects. For a specific non-hydrocarbon producing site studied for sequestration (San Luis Pass salt dome setting) with moderately dipping (16°) traps (i.e. high potential column height), membrane fault seal modeling is shown to decrease fault-bound trap area, and therefore storage capacity volume, compared with fill-to-spill modeling. However, using the developed fault seal workflow at other potential storage sites will predict the degree to which storage capacity may approach fill-to-spill capacity, depending primarily on the geology of the fault (shale gouge ratio – SGR) and the structural relief of the trap.Item Flood basalts(2009-04) Barker, Daniel S.Item Letter to Alva C. Ellisor from H.B. Stenzel on 1946-10-14(1946-10-14) Stenzel, Henryk B.Item Letter to Atsuyuki Mizuno from H.B. Stenzel on 1964-11-12(1964-11-12) Stenzel, H.B.Item Letter to Augusto Azzaroli from H.B. Stenzel on 1963-04-01(1963-04-01) Stenzel, Henryk B.Item Letter to Augusto Azzaroli from H.B. Stenzel on 1963-05-15(1963-05-15) Stenzel, Henryk B.Item Letter to Bob H. Slaughter from H.B. Stenzel on 1969-05-01(1969-05-01) Stenzel, Henryk B.Item Letter to Burton A. Amundson from H.B. Stenzel on 1969-07-03(1969-07-03) Stenzel, Henryk B.Item Letter to Calvin Goodrich from H.B. Stenzel on 1943-10-14(1943-10-14) Stenzel, Henryk B.Item Letter to Carlo Sturani from H.B. Stenzel on 1958-02-06(1958-02-06) Stenzel, Henryk B.Item Letter to Chester Stock from H.B. Stenzel on 1946-02-11(1946-02-11) Stenzel, Henryk B.Item Letter to Chester Stock from H.B. Stenzel on 1946-06-10(1946-06-10) Stenzel, Henryk B.Item Letter to Curt Teichert from H.B. Stenzel on 1967-11-27(1967-11-27) Stenzel, Henryk B.Item Letter to Curtis J. Hesse from H.B. Stenzel on 1943-07-07(1943-07-07) Stenzel, Henryk B.Item Letter to Curtis J. Hesse from Richard S. Lull on Undated(0000-00-00) Lull, Richard S.Item Letter to David Nicol from H.B. Stenzel on 1946-02-02(1946-02-02) Stenzel, H.B.Item Letter to David Nicol from H.B. Stenzel on 1964-12-02(1964-12-02) Stenzel, H.B.Item Letter to David Perry Olcott from H.B. Stenzel on 1944-02-22(1944-02-22) Stenzel, H.B.