Download or read book Structural Stratigraphic and Petrophysical Controls on Natural Gas Production from the Travis Peak and Pettet Formations Lower Cretaceous in the Overton Field Smith County and Cherokee County East Texas written by Eric David Gross and published by . This book was released on 2007 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Travis Peak Gas Reservoirs West Margin of the East Texas Basin written by Yamin Li and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas production from low-permeability (tight) gas sandstones is increasingly important in the USA as conventional gas reservoirs are being depleted, and its importance will increase worldwide in future decades. Travis Peak tight sandstones have produced gas since the 1940s. In this study, well log, 2D seismic, core, and production data were used to evaluate the geologic setting and reservoir characteristics of the Travis Peak formation. The primary objective was to assess the potential for basinward extension of Travis Peak gas production along the west margin of the East Texas Basin. Along the west margin of the East Texas Basin, southeast-trending Travis Peak sandstones belts were deposited by the Ancestral Red River fluvial-deltaic system. The sandstones are fine-grained, moderately well sorted, subangular to subrounded, quartz arenites and subarkoses; reservoir quality decreases with depth, primarily due to diagenetic quartz overgrowths. Evaluation of drilling mud densities suggests that strata deeper than 12,500 ft may be overpressured. Assessment of the geothermal gradient (1.6[degrees]F/100 ft) indicates that overpressure may be relict, resulting from hydrocarbon generation by Smackover and Bossier formation potential source rocks. In the study area, Travis Peak cumulative gas production was 1.43 trillion cubic feet from January 1, 1961, through December 31, 2005. Mean daily gas production from 923 wells was 925,000 cubic ft/well/day, during the best year of production. The number of Travis Peak gas wells in "high-cost" (tight sandstone) fields increased from 18 in the decade 1966-75 to 333 in the decade 1996-2005, when high-cost fields accounted for 33.2% of the Travis Peak gas production. However, 2005 gas production from high cost fields accounted for 63.2% of the Travis Peak total production, indicating that production from high-cost gas wells has increased markedly. Along the west margin of the East Texas Basin, hydrocarbon occurs in structural, stratigraphic, and combination traps associated with salt deformation. Downdip extension of Travis Peak production will depend on the (1) burial history and diagenesis, (2) reservoir sedimentary facies, and (3) structural setting. Potential Travis Peak hydrocarbon plays include: updip pinch-outs of sandstones; sandstone pinch-outs at margins of salt-withdrawal basins; domal traps above salt structures; and deepwater sands.
Download or read book Geologic Characterization of Low permeability Gas Reservoirs Travis Peak Formation East Texas written by and published by . This book was released on 1991 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Engineering Field Studies and Gas Resources of the Travis Peak Formation East Texas Basin written by Zsay-Shing Lin and published by . This book was released on 1986 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from eight fields producing from the Travis Peak Formation in the eastern East Texas Basin were used to define key engineering parameters for each field and to develop resource-reserve estimates. Field-average porosites range from 8 to 11 percent, and the median permeability for 191 wells is .088 md; field-average permeability ranges from .006 to .1 md. Gas productivity generally increases from south to north across the area studied with changes in the reservoir drive mechanism. Gas in place in the Travis Peak of East Texas Basin is estimated to be 19.5 Tcf, assuming 12 percent of the area of the basin is ultimately productive.
Download or read book An Assessment of In place Gas Resources in Low permeability Upper Cretaceous and Lower Tertiary Sandstone Reservoirs Wind River Basin Wyoming written by and published by . This book was released on 1996 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geologic Controls of Deep Natural Gas Resources in the United States written by T. S. Dyman and published by . This book was released on 1997 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Travis Peak Hosston formation written by Robert J. Finley and published by . This book was released on 1985 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Travis Peak (Hosston) formation constitutes a 1,000- to 5,000-ft-thick clastic wedge that formed two major depocenters along the north flank of the Gulf Coast Basin. The depocenters were dominated by fluvial-deltaic facies. A delta-fringe facies, including tidal flat and nearshore shallow-margin shelf facies, formed around the margins of the clastic wedge. These marginal-marine deposits within the upper Travis Peak are the most important productive facies of the formation within a nine-county area in East Texas. Sandstones in the Travis Peak are mineralogically mature. Low permeability and occlusion of porosity is primarily due to quartz overgrowths, authigenic clay, ankerite, and reservoir bitumen, a high-molecular-weight hydrocarbon residue. Within six Travis Peak gas fields in East Texas, porosity ranges from 8 to 11 percent and water saturation ranges from 28 to 44 percent within intervals of net pay. The permeability-thickness product is low in the southern part of the study area and increases toward the north. Upper limits of permeability range from 0.074 md (median value) to 0.084 md (thickness-weighted average), based on well tests that postdate fracture treatment. Within Chapel Hill field, three reservoir sandstone types were defined; sandstones with greatest lateral continuity were deposited as sandy tidal flats, including associated channel sandstones that trend northwest. Lower energy tidal-flat deposition is characterized by increased mud content of sandstones, and low marine transgression resulted in deposition of mudstone and muddy limestone.
Download or read book Integrated formation evaluation of the Travis Peak Formation East Texas Basin written by Brian Douglas Hughes and published by . This book was released on 1985 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Dipmeters in Stratigraphic and Depositional Interpretation of Natural Gas Reservoirs of the Oligocene Vicksburg Formation written by Richard P. Langford and published by . This book was released on 1994 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Petrophysical and Sequence Stratigraphic Analyses of the Nacogdoches Oil Field in Nacogdoches County Texas written by Fabian Chibuzor Aniekwensi and published by . This book was released on 2010 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a study of the Nacogdoches Oil Field in Nacogdoches County, East Texas. The study attempts to determine the nature of the hydrocarbon trapping mechanism for the field, the depositional environment of the Eocene strata from which it produces and the sequence stratigraphy of those units. For this research, stratigraphic and structural cross-sections of Eocene units in the oil field were constructed using 32 well logs. The major structural features near the Nacogdoches Oil Field include the Sabine Uplift to the north and east, the East Texas Basin to the northwest, the Angelina Flexure to the south and Mt. Enterprise-Elkhart Fault System about 30 miles (48 km) to the north. Overall, the geology of the Nacogdoches Oil Field is composed of sub-horizontal sedimentary rocks of the Cenozoic Eocene Claiborne Group that generally dip at 1--2° to the south or southeast. The main units of interest in the Nacogdoches Oil Field are a thick succession of Eocene non-marine and shallow marine units. Major stratigraphic units observed on the electric logs include, from the oldest to youngest, the Eocene Reklaw, Queen City, Weches, Sparta and Stone City/Cook Mountain Formations. They were deposited during episodic transgressions and regressions of the Claiborne shoreline and range in thicknesses from tens to hundreds of feet or (tens of meters). Sedimentary deposits of the Nacogdoches Oil Field are located in the eastern transitional zone between the mid-Cenozoic Rockdale delta system to the west and the Holy Spring delta system to the east. These deposits are mainly deltaic so they do not show pronounced vertical succession of facies. Instead, they show a significant lateral succession of facies that tends to persist vertically. This starts with the continental Carrizo unit which was deposited in a delta-barrier island setting by streams or longshore currents that deposited their sediment on a level coastal plain and developed a broad alluvial apron throughout the coastal length. Overlaying the Carrizo Sandstones are littoral and marsh/swamp deposits of the Reklaw Formation through fluvial-deltaic deposits of the Queen City Formation. Claiborne Group deposition continued with the emplacement of marine and littoral shelf deposits of the Weches Formation followed by littoral and beach deposits of the Sparta Sandstone through marine and littoral Stone City/Cook Mountain Formation deposits, and finally to sandy continental Yegua Formation deposits. Accommodation space and sequence development in this setting were controlled mainly by gradual subsidence of the shales and variations in sea level. The Queen City Formation is the reservoir unit for the shallow Nacogdoches Oil Field. Together with other Claiborne units, the Queen City in the study area was deformed into an anticlinal or dome structure, which is revealed in both the structural maps and cross-sections made for this study. The lower Tyus Member of the Weches Formation probably serves as the caprock that prevents hydrocarbons trapped in the Queen City Formation from migrating to the surface. The anticline in the Nacogdoches Oil Field may be associated with movement of under-compacted shale units within the lower Queen City and Reklaw Formations. Thus the trapping mechanism for the oil field may be structural, stratigraphic, or a combination of both.
Download or read book Stratigraphic Oil and Gas Fields Classification Exploration Methods and Case Histories written by Robert Evans King and published by . This book was released on 1972 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Dipmeters in Stratigraphic and Depositional Interpretation of Natural Gas Reservoirs of the Oligocene Vickburg Formation written by R.P. Langford and published by . This book was released on 1994 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing Differential Natural Gas Production from the Upper Cretaceous Upper Almond Formation Wamsutter Arch Area Sweetwater and Carbon Counties Wyoming written by Glen E. Christiansen and published by . This book was released on 1996 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphic and Structural Controls on Natural Gas Production in the Lower Atoka Sandstones of Franklin County Arkansas written by William Brooks Clower (Jr.) and published by . This book was released on 1989 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Stratigraphic and Reservoir Characteristics of Natural Gas Production from the Boone Formation Batson and Ozone Fields Arkoma Basin Western Arkansas written by Clayton Yarrow Davis and published by . This book was released on 2007 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Depositional History and Stratigraphic Evolution of the Upper Wilcox Group and Reklaw Formation Northern Bee County Tx RI284 written by William A. Ambrose and published by . This book was released on 2018-06 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of Investigations No. 284, "Depositional history and stratigraphic evolution of the Upper Wilcox Group and Reklaw Formation, northern Bee County, Texas" is a detailed study of the upper Wilcox and Reklaw stratigraphic succession in a 190-mi2 (~490-km2) area along the upper Wilcox shelf margin in northern Bee County, Texas. By interpreting and mapping 19 high-frequency, fourth-order regressive-transgressive sequences, it demonstrates that the upper Wilcox to Reklaw succession contains greater variability in depositional systems, facies, and reservoir sandstone-body geometry than previously documented.
Download or read book Geologic Controls on Production written by Bruce S. Hart and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: SEPM Field Trip Guidebook 16 is perhaps best thought of as an exercise in applied stratigraphy and structural geology. The technical goal is to make inter-disciplinary links, to demonstrate how stratigraphic and structural features affect exploration and development activities for unconventional hydrocarbon reservoirs.The outcrops described in this guidebook should help to stimulate discussion on a series of interrelated topics such as: lithology, stratigraphic controls on hydrocarbons, horizontal drilling target, and geosteering challenges.
