Geology of the Lower Cretaceous Travis Peak Formation, East Texas PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Geology of the Lower Cretaceous Travis Peak Formation, East Texas PDF full book. Access full book title Geology of the Lower Cretaceous Travis Peak Formation, East Texas by S. P. Dutton. Download full books in PDF and EPUB format.
Author: S. P. Dutton
Publisher:
ISBN:
Category : Sandstone
Languages : en
Pages : 170
Get Book Here
Book Description
Author: S. P. Dutton
Publisher:
ISBN:
Category : Sandstone
Languages : en
Pages : 170
Get Book Here
Book Description
Author: Matthew Lewis Wilson
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 362
Get Book Here
Book Description
Author: S. P. Dutton
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 76
Get Book Here
Book Description
Petrographic and geochemical studies were used to determine the diagenetic and burial history of Travis Peak sandstones in East Texas and to relate the diagenesis to permeability variations within the formation. Permeability in much of the formation has been reduced to less than 0.1 md by compaction, cementation and minor pressure solution. Travis peak sandstone is quartzarenite and subarkose, having an average composition Q95F4R1. The first authigenic cements to precipitate were illite, which coated detrital grains with tangentially oriented crystals, and dolomite. Next, extensive quartz cement, averaging 17% of the rock volume in well-sorted sandstone, occluded much of the primary porosity. Quartz is most abundant in the lower Travis Peak, in well-connected sandstone beds that were deposited in braided streams. Dissolution of orthoclase and albitization of plagioclase followed quartz cementation and occurred prior to mid-Cretaceous movement of the Sabine Uplift. Illite, chlorite, and ankerite precipitated after feldspar diagenesis. Oil migrated into Travis Peak reservoirs in the Late Cretaceous from Jurassic source rocks. Later deasphalting of the oil filled much of the remaining porosity in some zones near the top of the formation with reservoir bitumen.
Author: Shirley P. Dutton
Publisher:
ISBN:
Category : Cementation (Petrology)
Languages : en
Pages : 71
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Gas fields
Languages : en
Pages : 100
Get Book Here
Book Description
Author: University of Texas at Austin. Bureau of Economic Geology
Publisher:
ISBN:
Category : Louisiana, Western
Languages : en
Pages : 80
Get Book Here
Book Description
Author: Mary L. W. Jackson
Publisher:
ISBN:
Category : Folds (Geology)
Languages : en
Pages : 56
Get Book Here
Book Description
Author: Frank Edgar Lozo
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 66
Get Book Here
Book Description
Author: Amanda Marie Suter
Publisher:
ISBN:
Category :
Languages : en
Pages : 370
Get Book Here
Book Description
In East Texas, the Lower Cretaceous Travis Peak Formation is a gas-bearing sandstone with low-permeability and low-porosity. Hydraulic fracture treatments have been used to facilitate recovery and production. The potential for gas production from sandstones of the Travis Peak Formation in the Garrison Field, East Texas Basin, is evaluated by applying findings from drill cutting examinations to completion data of wells. In order to evaluate the effectiveness of hydraulic fracture treatments, a thorough understanding of the formation geology, production, and detailed studies of reservoir engineering properties are required. Drill cuttings provide a wide range of necessary information for this study. Samples evaluated enable (1) characterization of lithology, texture, and sedimentary fabric, (2) determination of mineralogy, including clay species, (3) analysis of porosity distribution and associated reservoir quality, and (4) determination of possible mineralogical influences on sandstone reservoir stimulation. For the purpose of this study, petrophysical analyses of well-logs provide reservoir parameters such as permeability, porosity, and water saturation. Stratigraphic, petrographic, and structural characterization of the Travis Peak Formation supply geologists and engineers with critical information that has enabled more effective completion of reservoirs. All allow for optimization of fracture treatments.
Author: Robert J. Finley
Publisher:
ISBN:
Category : Formations (Geology)
Languages : en
Pages : 233
Get Book Here
Book Description
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.
