The purpose of this study was first to develop a method by which a detailed porosity classification system could be utilized to understand the relationship between pore/pore-throat geometry, genetic porosity type, and facies. Additionally, this study investigated the relationships between pore/pore-throat geometry, petrophysical parameters, and reservoir performance characteristics. This study focused on the Jurassic Smackover reservoir rocks of Grayson field, Columbia County, Arkansas. This three part study developed an adapted genetic carbonate pore type classification system, through which the Grayson reservoir rocks were uniquely categorized by a percent-factor, describing the effect of diagenetic events on the preservation of original depositional texture, and a second factor describing if the most significant diagenetic event resulted in porosity enhancement or reduction. The second part used petrographic image analysis and mercury-injection capillary pressure tests to calculate pore/pore-throat sizes. From these data sets pore/pore-throat sizes were compared to facies, pore type, and each other showing that pore-throat size is controlled by pore type and that pore size is controlled primarily by facies. When compared with each other, a pore size range can be estimated if the pore type and the median pore-throat aperture are known. Capillary pressure data was also used to understand the behavior of the dependent rock properties (porosity, permeability, and wettability), and it was determined that size-reduced samples, regardless of facies, tend to show similar dependent rock property behavior, but size-enhanced samples show dispersion. Finally, capillary pressure data was used to understand fluid flow behavior of pore types and facies. Oncolitic grainstone samples show unpredictable fluid flow behavior compared to oolitic grainstone samples, yet oncolitic grainstone samples will move a higher percentage of fluid. Size-enhanced samples showed heterogeneous fluid flow behavior while the size-reduced samples could be grouped by the number of modes of pore-throat sizes. Finally, this study utilized petrographic image analysis to determine if 2- dimensional porosity values could be calculated and compared to porosity values from 3-dimensional porosity techniques. The complex, heterogeneous pore network found in the Grayson reservoir rocks prevents the use of petrographic image analysis as a porosity calculation technique.

The purpose of this study was first to develop a method by which a detailed porosity classification system could be utilized to understand the relationship between pore/pore-throat geometry, genetic porosity type, and facies. Additionally, this study investigated the relationships between pore/pore-throat geometry, petrophysical parameters, and reservoir performance characteristics. This study focused on the Jurassic Smackover reservoir rocks of Grayson field, Columbia County, Arkansas. This three part study developed an adapted genetic carbonate pore type classification system, through which the Grayson reservoir rocks were uniquely categorized by a percent-factor, describing the effect of diagenetic events on the preservation of original depositional texture, and a second factor describing if the most significant diagenetic event resulted in porosity enhancement or reduction. The second part used petrographic image analysis and mercury-injection capillary pressure tests to calculate pore/pore-throat sizes. From these data sets pore/pore-throat sizes were compared to facies, pore type, and each other showing that pore-throat size is controlled by pore type and that pore size is controlled primarily by facies. When compared with each other, a pore size range can be estimated if the pore type and the median pore-throat aperture are known. Capillary pressure data was also used to understand the behavior of the dependent rock properties (porosity, permeability, and wettability), and it was determined that size-reduced samples, regardless of facies, tend to show similar dependent rock property behavior, but size-enhanced samples show dispersion. Finally, capillary pressure data was used to understand fluid flow behavior of pore types and facies. Oncolitic grainstone samples show unpredictable fluid flow behavior compared to oolitic grainstone samples, yet oncolitic grainstone samples will move a higher percentage of fluid. Size-enhanced samples showed heterogeneous fluid flow behavior while the size-reduced samples could be grouped by the number of modes of pore-throat sizes. Finally, this study utilized petrographic image analysis to determine if 2- dimensional porosity values could be calculated and compared to porosity values from 3-dimensional porosity techniques. The complex, heterogeneous pore network found in the Grayson reservoir rocks prevents the use of petrographic image analysis as a porosity calculation technique.

Thesis (M. Div.)--Emmanuel School of Religion, Johnson City, Tennessee, 1995. / Vita. Includes bibliographical references (leaves 111-113).

Thesis (D. Min.)--Abilene Christian University, 1992. / Abstract. Includes bibliographical references (leaves 98-104).

M.S.

This project examines the activism of Black parents, students, and citizens who fought to obtain school equality and desegregation from the 1920s until the 1960s in southwest Virginia and consequently the resistance from White residents and officials. Resistance to the status quo of inequality between Black and White schools in Pulaski County, Virginia began as early as the 1920s. This activism continued through the 1930s and 1940s, with it finally leading NAACP attorneys Oliver Hill and Spottswood Robinson collaborating with Pulaski citizens in 1948 to file a discrimination lawsuit in the case Corbin v. School Board of Pulaski County. The activism did not end here as once the Supreme Court ruled in Brown v. Board of Education that segregated schools were unconstitutional, Black residents in southwest Virginia localities such as Floyd, Galax, Grayson, and Pulaski worked together with NAACP attorney Reuben Lawson to file multiple lawsuits so Black students could attend White schools. Many of these lawsuits faced staunch resistance from White residents of these localities, even with the threat of closing schools due to Virginia's policy of Massive Resistance. I argue that looking at localities such as Pulaski, Floyd, Galax, and Grayson helps situate southwest Virginia into the larger context of Virginia history in terms of examining resistance, fighting for equality, and pushing desegregation in the area during the middle of the twentieth century. Black citizens in the western part of Virginia faced resistance from the White citizens, but they persevered with their activism in the courts and hometowns which ultimately contributed to the dismantling of segregated schools in Virginia. They pushed for equality within segregation and then for desegregation in the middle decades of the twentieth century. Examining the historiography of school equality and desegregation in Virginia demonstrates that there is an overgeneralization about the resistance which occurred in the western half of the state. Historians argue that the eastern part of the state saw more modes of resistance, especially Massive Resistance, due to the higher population of Black residents. On the other hand, they ignore the western part as they believe the same resistance did not occur due to a lower population of Black residents. I reject these notions as Massive Resistance found its way into southwest Virginia through either the threat of or action of closing schools. I have dug more deeply into the sources, such as trial transcripts, legal correspondence, school board records, petitions, court cases, testimony, newspapers, and oral histories to understand the avenues Black residents in southwest Virginia used to fight inequality and segregation. / Master of Arts / This project examines the activism of Black parents, students, and citizens who fought to obtain school equality and desegregation from the 1920s until the 1960s in southwest Virginia and consequently the resistance from White residents and officials. Resistance to the status quo of inequality between Black and White schools in Pulaski County, Virginia began as early as the 1920s. This activism continued through the 1930s and 1940s, with it finally leading NAACP attorneys Oliver Hill and Spottswood Robinson collaborating with Pulaski citizens in 1948 to file a discrimination lawsuit in the case Corbin v. School Board of Pulaski County. The activism did not end here as once the Supreme Court ruled in Brown v. Board of Education that segregated schools were unconstitutional, Black residents in southwest Virginia localities such as Floyd, Galax, Grayson, and Pulaski worked together with NAACP attorney Reuben Lawson to file multiple lawsuits so Black students could attend White schools. Many of these lawsuits faced staunch resistance from White residents of these localities, even with the threat of closing schools due to Virginia's policy of Massive Resistance. I argue that looking at localities such as Pulaski, Floyd, Galax, and Grayson helps situate southwest Virginia into the larger context of Virginia history in terms of examining resistance, fighting for equality, and pushing desegregation in the area during the middle of the twentieth century. Black citizens in the western part of Virginia faced resistance from the White citizens, but they persevered with their activism in the courts and hometowns which ultimately contributed to the dismantling of segregated schools in Virginia. They pushed for equality within segregation and then for desegregation in the middle decades of the twentieth century.

M.S.

The purposes of this study were to identify criteria which influence students' decisions to attend specific colleges and to determine whether different groups of students use similar criteria. The following groups were compared: white students and minority students, males and females, older students and younger students, university-bound students and vocational students, and full-time students and part-time students. The sample used for this study was taken from the students enrolled in freshman English classes at Vernon Regional Junior College, Clarendon College, and Grayson County College. Approximately 100 students at each college were selected to participate in the study. Each student in the study received instruction, provided demographic information, and completed a two-part survey. The survey asked respondents to evaluate each of twenty items on a Likert-type scale. The data provided were compiled and organized into groups by a data base computer program. Data obtained from specific groups of respondents were compared, first through an examination of means, then through a chi-square test of independence. It was determined that the most important college selection criteria to these respondents were the cost of attendance, the availability of specific programs, the size of the college, the size of individual classes, the location of the school, and the availability of financial aid. Further, the research revealed that two comparison groups differed significantly in their choices of important college selection criteria. Younger students appeared to use different selection criteria than their older counterparts, and vocational students differed from university-bound students in their choice of criteria.

This study describes the development of the black business and professional community with emphasis on the period from 1920 to 1930, the riot itself, and the impact of the episode on the local black community. It utilizes traditional historical research methods, county records, contemporary newspapers, and oral history.

No description available.