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.

Structures in Carbonate Rocks Made Visible by Luminescence Petrography.

Abstract: Using a simple device which should bring the luminescence-petrography technique within the grasp of all interested petrographers, we have examined approximately 250 thin sections of carbonate rocks and minerals. Many new phenomena became apparent.

Ethyl acetate synthesis from ethylene and acetic acid using solid acid catalysts

Abstract: A method of producing ethyl acetate by reacting acetic acid with ethylene in the presence of a solid acidic catalyst comprising a zeolite selected from the group consisting of MCM-22, MCM-49, MCM-56, ZSM-5 and zeolite-Beta.

Electrical efficiency -- A pore geometric theory for interpreting the electrical properties of reservoir rocks

Abstract: Knowledge of the way pore geometry affects the conductivity of rocks is important for the evaluation of sedimentary rocks for hydrocarbon potential. Virtually all formation evaluation from logs, however, uses the empirical Archie equation that has never been given a satisfactory physical basis. As an alternative, we have formulated a new model based on the efficiency with which water-bearing rocks conduct electric currents as determined by the conducting phase geometry. Electric current densities are not uniform throughout the conducting phase in the pore system of a rock. Numerical model studies show high current density in pore throats and low current density in nearly stagnant volumes in isolated parts of the pore system. The electrical efficiency of a rock is the ratio of the average power developed in all water-bearing parts of the pore system to the power developed in a straight tube with the same length and water volume as the rock. It is inherently independent of the bulk volume of water in the rock and determined only by the nonuniform current distribution caused by pore geometry and hydrocarbons in the pore system. Electrical efficiency can be calculated a priori given the geometrical distribution of the conducting phase. Empirical relationships between electrical efficiency and water content can be used to calculate hydrocarbon saturations from log data.

Selective production of para dialkyl substituted benzenes

Abstract: A catalytic process is provided for the selective production of para dialkyl substituted benzenes containing alkyl groups of 1 to 4 carbon atoms, typified by para-xylene, by contacting, under conversion conditions, a hydrocarbon precursor selected from the group consisting of mono alkyl-substituted benzenes having 1-4 carbon atoms in the alkyl substituent, e.g., toluene, ethyl benzene, propyl benzene, or butyl benzene; a C2 -C15 olefin and a C3 -C60 paraffin, or mixtures thereof including mixtures of benzene with at least one of the aforementioned olefins or paraffins with a zeolite-containing catalyst characterized by a xylene sorption capacity greater than 1 gram/100 grams of zeolite and an ortho xylene sorption time for 30 percent of said capacity of greater than 10 minutes, said sorption capacity and sorption time being measured at 120° C and a xylene pressure of 4.5 ±0.8 mm. of mercury, said catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12 and recovering from the resulting product mixture, a para dialkyl substituted benzene in an amount greater than the thermodynamic equilibrium concentration thereof in total dialkyl substituted benzenes produced.

Single connector for shunt conduits on well tool

Abstract: A well tool (e.g. well screen) having a single connector for fluidly connecting the shunt conduits carried by adjacent joints of a well tool to thereby eliminate the need for separate, individual connectors. The single connector is slidably mounted on the central conduit of one of the joints and has a plurality of passages therethrough, each of which is adapted to receive a respective shunt conduit on one of the adjacent joints. After the central conduits of two adjacent joints are coupled together, the single connector is moved whereby the upper ends of the respective shunts on one joint enter the lower ends of the respective passages to thereby fluidly connect the respective shunt conduits. The single connector is then secured in a connected position.