179,684 research outputs found
Optimization of a CO2 flood design Wesson Field - west Texas
Full text linkThe Denver Unit of Wasson Field, located in Gaines and Yoakum Counties in west
Texas, produces oil from the San Andres dolomite at a depth of 5,000 ft. Wasson Field is
part of the Permian Basin and is one of the largest petroleum-producing basins in the
United States.
This research used a modeling approach to optimize the existing carbon dioxide (CO2)
flood in section 48 of the Denver Unit by improving the oil sweep efficiency of miscible
CO2 floods and enhancing the conformance control.
A full compositional simulation model using a detailed geologic characterization was
built to optimize the injection pattern of section 48 of Denver Unit. The model is a
quarter of an inverted nine-spot and covers 20 acres in San Andres Formation of Wasson
Field. The Peng-Robinson equation of state (EOS) was chosen to describe the phase
behavior during the CO2 flooding. An existenting geologic description was used to
construct the simulation grid. Simulation layers represent actual flow units and resemble
the large variation of reservoir properties. A 34-year history match was performed to
validate the model. Several sensitivity runs were made to improve the CO2 sweep
efficiency and increase the oil recovery.
During this study I found that the optimum CO2 injection rate for San Andres Formation
in the section 48 of the Denver Unit is approximately 300 res bbl (762 Mscf/D) of
carbon dioxide. Simulation results also indicate that a water-alternating-gas (WAG) ratio
of 1:1 along with an ultimate CO2 slug of 100% hydrocarbon pore volume (HCPV) willallow an incremental oil recovery of 18%. The additional recovery increases to 34% if a
polymer is injected as a conformance control agent during the course of the WAG
process at a ratio of 1:1. According to the results, a pattern reconfiguration change from
the typical Denver Unit inverted nine spot to staggered line drive would represent an
incremental oil recovery of 26%
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
Full text linkFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Research data supporting "Nonlinear Optical Response of a Plasmonic Nanoantenna to Circularly Polarized Light: Rotation of Multipolar Charge Density and Near-Field Spin Angular Momentum Inversion"
No full textWe include the dataset corresponding to the figures of the paper "Nonlinear Optical Response of a Plasmonic Nanoantenna to Circularly Polarized Light: Rotation of Multipolar Charge Density and Near-Field Spin Angular Momentum Inversion" by M. Quijada, A. Babaze, J. Aizpurua, and A.G. Borisov, published in the journal ACS Photonics, with DOI: 10.1021/acsphotonics.3c00783 . The set includes data to generate: optical spectra, charge density maps, time evolution of multipolar moments, and all the plots in the paper.Peer reviewe
Intern experience at CH���M Hill, Inc.: an internship report
Full text linkIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Interview no. 1291
Full text linkMr. Calles Quijada talks about his hometown and working in agriculture and with livestock while growing up; he talks about how his father’s land was eventually taken from him; he briefly discusses how he met his wife, Magdalena Vazquez; he remembers the contracting process and describes the medical exams and required documents; he was stripped, examined, and deloused; he describes the process as humiliating, especially for the indigenous that came from the South; Mr. Calles Quijada talks about working ten hours a day cleaning ditches and irrigating the fields in Imperial Valley; Mr. Calles Quijada also labored in the fields of Sacramento; in addition, he describes helping the foreman with the daily paperwork; he also worked in construction; Mr. Calles Quijada goes on to detail the living conditions, provisions, duties, payments, deductions, remittance treatment, friendships and correspondence; Mr. Calles Quijada also talks about how he and two of his brothers were always contracted together; he mentions the ten percent deduction that was taken to be put into the savings fund and that he has yet to see any of the money; after his last contract he was able to emigrate to the United States; his overall memories of the bracero program are positive
Intern experience at the Texas Transportation Institute: an internship report
Full text link"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirements for the degree of Doctor of Engineering."Includes vita (leaf 91)Includes bibliographical references (leaf 57)This report discusses the author's engineering experience at the Texas
Transportation Institute (TTI), Texas A&M University from March 1974 through July 1977. A
report of this experience plus twelve additional hours of academic course work were
substituted for an internship according to requirements established by the College of
Engineering. Although the author could not retroactively establish objectives of the type
associated with a typical internship, the work experience gained could be related to the two
general objectives of an intership: 1. To demonstrate an identifiable contribution to the
organization in which the intern served, and 2. To enable the intern to become aware of the
non-technical aspects of working as an engineer in a non-academic environment. While a member
of the Texas Transportation Institute staff, the author worked on a number of projects in the
areas of highway traffic engineering research and the preparation of continuing education
courses for transportation engineering officials. These assignments were contained within the
Urban Transportation Systems Division of TTI. This report delineates the author's contribution
to four particular projects and discusses the technical as well as non-technical experience
gained from each. Having been exposed to more engineering situations than many of the other
Doctor of Engineering students, the author has already formulated some rather specific
milestones for the future. The Doctor of Engineering program is discussed in conjunction with
its potential for helping the author attain these career goals and objectives. Also, some
thoughts are presented regarding the Doctor of Engineering as a viable alternative to the
Ph.D. in preparing for a career in engineering higher education
The long-wavelength view of GG Tau A: rocks in the ring world
No full textWe present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models
Intern experience at Honeywell, Inc., Large Information Systems Division: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical references (leaves 169-173)This report describes the author's internship assignment at Honeywell
Inc. - Large Information Systems Division from January, 1982 through August, 1982. The purpose
of the assignment was to fulfill the internship requirements of the Doctor of Engineering
Program. During the internship, the author held the position of VLSI design engineer, where he
worked on a predefined project. The project's objective was to evaluate how circuit designs
based on an advanced CMOS process, can be applied to hardware products at LISD. The internship
allowed the author to successfully apply the MOS circuit design training, which ws developed
at Texas A&M, to an industrial project. In addition, involvement in different activities
and exposure to the various problems not encountered in academia, made this internship an
invaluable experience
\u27Letters Full of Love\u27: Wayne Booth\u27s Theories of the Implied Author and Reader in Brad Marsh\u27s WWII Correspondence
No full textThis project consists of a qualitative study of the WWII correspondence of Captain Brad Marsh from the collection of letters donated by his daughter on April 26, 2013. I draw from the narrative theory and works of Wayne Booth to examine Marsh’s construction of self as an implied author by examining how he presents his experiences and portrays his emotions. I also examine how Marsh constructs his implied self by paying attention to details such as the information he shares with Lynn and how he presents it. I explore the nature of the implied author and reader in the correspondence and also how the relationship between the implied writer and reader influences the understanding of an unintended audience
Intern Experience at MEL, Inc.: An Internship Report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical references (leaves 82-85)...The author spent a one-year internship at MEL, Inc., a civil and
mechanical engineering consulting firm located in Baton Rouge, Louisiana. By special
arrangement with the president of the firm, the author was able to participate in roles at
various levels within the firm. These activities included engineering design, supervision and
management, project cost control, and interface with top level management. During this period,
the author has been engaged in the following assignments: 1. Serving as senior project
engineer on the Louisiana Training Institution air conditioning and heating project, 2.
Serving at the review and advisory level for three projects, 3. Studying and implementing
computer aided design and drafting system for MEL, Inc. 4. Developing a projet cost control
system that is interactive with the firm's payroll program. 5. Upgrading the firm's computer
capacity. 6. Performing special assignments from the President, Executive Vice-President,
Manager of Operation and Manager of Business and Fiscal Affairs at MEL, Inc. These activities
involved the application of scientific principles to the design, installation, and improvement
of integrated systems of people, materials, and equipment to provide the most effective
operating and work procedures. As a result of this involvement in a wide range of assignments,
the author now has a broadly based experience in a consulting engineering firm as both
engineer and manager. The author also found that well-developed, practical courses in
communication, business, engineering, law, and management from the Doctor of Engineering
program at Texas A&M University contributed greatly to this successful internship with
MEL, Incorporated
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