• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 238
  • 70
  • 59
  • 12
  • 12
  • 5
  • 3
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 507
  • 192
  • 96
  • 71
  • 58
  • 55
  • 47
  • 44
  • 41
  • 41
  • 39
  • 39
  • 35
  • 31
  • 28
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Factors determining the colors of red and green shales

Waterman, Willis Dabner January 2011 (has links)
Typescript, etc. / Digitized by Kansas State University Libraries
2

Characterization of the engineering behavior of nondurable shales

Masada, Teruhisa. January 1986 (has links)
Thesis (M.S.)--Ohio University, March, 1986. / Title from PDF t.p.
3

Analyses of limestones and shales

Snyder, Byron John. January 1907 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1907. / B. J. Snyder determined to be Byron John Snyder from "Thirty-Seventh Annual Catalogue of the School of Mines and Metallurgy". The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed November 7, 2008)
4

Stratigraphy and structure of the Arapien shale and the twist gulch formation in Sevier Valley, Utah /

Hardy, Clyde T. January 1949 (has links)
Thesis (Ph. D.)--Ohio State University, 1949. / Vita. Includes bibliographical references (leaves 84-85). Available online via OhioLINK's ETD Center
5

Fissility and non-fissility in shales and mudstones

Ingram, Roy L. January 1948 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1948. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 66-69).
6

Trace elements in whole shales and selected shale components

Stam, Alan C. January 1978 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
7

Probabilistic approach to deformation and strength properties of shale mass /

Kulatilake, Pinnaduwa H. S. W. January 1981 (has links)
No description available.
8

Progressive failure of red Conemaugh shale /

Williams, Richard Lynn January 1982 (has links)
No description available.
9

Diagenetic changes in a Cambrian shale as a function of burial depth

Broekstra, Bradley Robert 05 1900 (has links)
No description available.
10

A Technical and Economic Study of Completion Techniques In Five Emerging U.S. Gas Shale Plays

Agrawal, Archna 2009 December 1900 (has links)
methane and other higher order hydrocarbons, through C4, with interest in further developing reactions important to methane- and ethane-related chemistry. With the increased demand for energy and the declining conventional hydrocarbons worldwide, energy companies, both majors and independents, are turning to unconventional resources to produce the hydrocarbons required to meet market demand. From coalbed methane to low permeability (tight) gas reservoirs and gas shales, energy companies are making substantial progress in developing the technologies required to bring these unconventional reserves to the market. A common misconception is that there are not enough domestic oil and gas reserves to fuel our economy. The United States imports most of the oil used for transportation fuel and several TCF of natural gas annually. However, there is a very large resource of natural gas in unconventional reservoirs, with over 2,200 TCF of gas in place in just the gas shale formations that have been identified in the energy arena (Navigant Study 2008). There are still major gas shale plays and basins that have not been explored and are waiting to be evaluated and developed. The natural gas in shales and other unconventional reservoirs can be used to generate electricity, or it can be turned into liquids and used by the transportation industry. It is also misconstrued that gas shales are relatively new in our industry and something of the future. The first commercially viable gas shale well was drilled in the early 1920s in Pennsylvania, before the famous oil well drilled by Colonel Drake. The objectives of this study are to (1) complete literature review to establish which geologic parameters affect completion techniques in five emerging gas shales: the Antrium, the Barnett, the Haynesville, the Marcellus, and the Woodford; (2) identify the different completion methods; (3) create an economic model for the completion techniques discussed; (4) develop a sensitivity analysis on various economic parameters to determine optimal completion strategy; and (5) create completion flowcharts. Based on the literature review I have done for several gas shale basins, I have identified seven pertinent geologic parameters that influence completion practices. These are depositional environment, total organic content (TOC), average gas content, shale mineralogy, shale thickness, and reservoir pressure. Next, I identified different completion and simulation trends in the industry for the different shale plays. The results from this study show that although there are some stark differences between depths (i.e. the Antrim Shale and the Haynesville Shale), shale plays are very similar in all other geologic properties. Interestingly, even with a large range for the different geological parameters, the completion methods did not drastically differ indicating that even if the properties do not fall within the range presented in this paper does not automatically rule them out for further evaluation in other plays. In addition to the evaluation of geologic properties, this study looked at drilling cost and the production profile for each play. Due to the volatility of the energy industry, economic sensitivity was completed on the price, capital, and operating cost to see what affect it would have on the play. From the analysis done, it is concluded that horizontal drilling in almost any economic environment is economic except for one scenario for the Woodford Shale. Therefore, gas shales plays should still be invested in even in lower price environments and companies should try to take advantage of the lower cost environments that occur during these times. With continual development of new drilling and completion techniques, these plays will become more competitive and can light the path for exploration of new shale plays worldwide.

Page generated in 0.0336 seconds