Institution
Mobil
About: Mobil is a based out in . It is known for research contribution in the topics: Catalysis & Zeolite. The organization has 7085 authors who have published 10642 publications receiving 237497 citations. The organization is also known as: Socony-Vacuum Oil Company & Standard Oil Company of New York.
Topics: Catalysis, Zeolite, Fluid catalytic cracking, Alkyl, Hydrocarbon
Papers published on a yearly basis
Papers
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11 Oct 1967TL;DR: In this paper, an in situ combustion process is described in which the production well or wells are alternately choked and opened to effect an increase in oil recovery, and the choking and opening steps may be repeated at appropriate intervals during the process.
Abstract: An in situ combustion process is described in which the production well or wells are alternately choked and opened to effect an increase in oil recovery. The production well is choked, preferably to the extent of shutting it in, until an increase in bottom-hole pressure of at least 10 atm is obtained. Thereafter the production well is opened and hydrocarbon fluids are recovered as the bottom-hole pressure declines. Preferably, the choking step is instituted after gas permeability is established between the injection and production wells. The choking and opening steps may be repeated at appropriate intervals during the process. (11 claims)
149 citations
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TL;DR: In this article, two computationally feasible methods for determining the exponents from a given spectrum are described; they are essentially based on the generation of a system of linear equations, and the unknown coefficients in this system of equations are functions of the corner locations.
Abstract: The expressions for the spectra of both gravity and magnetic anomalies due to a two-dimensional structure consist of (except for a factor) sums of exponentials. The exponents of these exponentials are functions of frequency and the locations of the corners of the polygonal cross-section of the structure. Two computationally feasible methods for determining the exponents from a given spectrum are described in this paper; they are essentially based on the generation of a system of linear equations. The unknown coefficients in this system of equations are functions of the corner locations.The first method requires expansion of the exponentials in the expressions for the spectra in the form of a series and works reliably when the amplitudes of low frequencies are analyzed. The unknown parameters are determined fairly accurately with this method by suitable combinations of the spectra of the observed anomaly and its moments.The second method utilizes an exponential approximation technique for producing the system of linear equations. If only the spectrum of the anomaly is used, the system of equations becomes ill-conditioned in most cases resulting in grossly inaccurate solutions. However, particular combinations of the spectra of the anomaly and its first and second order moments are found to improve significantly the behavior of the system of equations and thus the quality of results.It has also been found that the mean values of corner locations can be calculated fairly accurately by taking the ratios of the spectra of the anomaly and its moments. Once the corner locations are found, computation of the density contrast in the case of a gravity anomaly and the magnetization contrast for a magnetic anomaly is straightforward.
149 citations
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TL;DR: The response of the ocean to hurricanes was investigated using aircraft-deployable expendable current profilers (AXCPs) as discussed by the authors, which were used to observe and separate the surface wave and surface mixed layer velocities under the storms and to map the across-track and along-track velocity and temperature response in the mixed layer and thermocline.
Abstract: The response of the ocean to hurricanes was investigated using aircraft-deployable expendable current profilers (AXCP). The goals were to observe and separate the surface wave and surface mixed layer (SML) velocities under the storms and to map the across-track and along-track velocity and temperature response in the mixed layer and thermocline. Custom instrumentation was prepared, including slower failing AXCPs, and the AXCP equipment was installed on NOAA WP-3D aircraft. Research flights were made into two 1984 hurricanes: Norbert, in the eastern Pacific off Baja California (19°N, 109°W), and Josephine, off the east coast of the United States (29°N, 72°W). Thirty-one probes were deployed in each hurricane, and about half the AXCPs provided temperature and velocity profiles. Most velocity profiles exhibited strong surface wave contributions, slablike velocities in the SML, strong shears beneath the SML, and only weak flows in the upper thermocline. Separation of the surface gravity wave velociti...
149 citations
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02 Nov 1973TL;DR: A crystalline metal organosilicate having the composition, in its anhydrous state, as follows: 0.9 ± 0.2 [xR.sub.2 O + (1-x) M.sub as discussed by the authors, where n is the valence of said metal, R is an alkyl ammonium radical and x is a number greater than 0 but not exceeding 1, is characterized by a specified X-ray diffraction pattern.
Abstract: A crystalline metal organosilicate having the composition, in its anhydrous state, as follows: 0.9 ± 0.2 [xR.sub.2 O + (1-x) M.sub.2/n O]: <.005 Al.sub.2 O.sub.3 :>1SiO 2 where M is a metal, other than a metal of Group IIIA, n is the valence of said metal, R is an alkyl ammonium radical and x is a number greater than 0 but not exceeding 1, said organosilicate being characterized by a specified X-ray diffraction pattern. Said organosilicate is prepared by digesting a reaction mixture comprising (R 4 N) 2 O, sodium oxide, an oxide of a metal other than a metal of group IIIA, an oxide of silicon and water. The crystalline organosilicates are useful as adsorbents and in their catalytically active form as catalysts for organic compound conversion.
148 citations
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TL;DR: In this paper, a method for optimizing the net present value of a full field development by varying the placement and sequence of production wells is presented, where the authors frame the well placement and scheduling problem as a classic travelling salesman problem.
Abstract: A method for optimizing the net present value of a full field development by varying the placement and sequence of production wells is presented. This approach is automated and combines an economics package and Mobil's in-house simulator, PEGASUS, within a simulated annealing optimization engine. A novel framing of the well placement and scheduling problem as a classic travelling salesman problem is required before optimization via simulated annealing can be applied practically. An example of a full field development using this technique shows that non-uniform well spacings are optimal (from an NPV standpoint) when the effects of well interference and variable reservoir properties are considered. Examples of optimizing field NPV with variable well costs also show that non-uniform wells spacings are optimal. Project NPV increases of 25 to 30 million dollars were shown using the optimal, non-uniform development versus reasonable, uniform developments. The ability of this technology to deduce these non-uniform well spacings opens up many potential applications that should materially impact the economic performance of field developments.
148 citations
Authors
Showing all 7085 results
Name | H-index | Papers | Citations |
---|---|---|---|
Galen D. Stucky | 144 | 958 | 101796 |
James A. Russell | 124 | 1024 | 87929 |
Thomas Bein | 109 | 677 | 42800 |
George J. Hirasaki | 65 | 278 | 14164 |
Kai-Kit Wong | 61 | 605 | 14680 |
James Paul | 59 | 252 | 13394 |
Sankaran Sundaresan | 58 | 241 | 10083 |
Fabio Rocca | 57 | 325 | 19186 |
Roland Winston | 55 | 473 | 13911 |
Kyger C. Lohmann | 54 | 144 | 10112 |
Maurice A. Biot | 50 | 154 | 37311 |
Kenneth E. Peters | 48 | 171 | 13920 |
Paul L. Stoffa | 47 | 260 | 9323 |
Clarence D. Chang | 47 | 239 | 9047 |
Bruce H. Wilkinson | 45 | 118 | 6483 |