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.

Method and apparatus for obtaining an improved gravel pack

Abstract: This specification discloses a process for providing a gravel pack adjacent a subsurface formation in a well having a string of casing therein. In carrying out this process, first perforations are formed through the casing adjacent the subsurface formation and materials are flowed therethrough to provide a consolidated gravel pack. Second perforations are thereafter formed through the casing to extend into and terminate within the consolidated gravel pack. Also disclosed is a well tool which may be employed in carrying out this process. This well tool is comprised in combination of an elongated body housing a means for forming perforations in casing in a well, which body has a recess in the lower end thereof. A plug is provided which is adapted to be set in the casing, which plug has fixed to the upper side thereof a protrusion that is adapted to be positively engaged by the recess.

n-Alkane utilization and lipid formation by a Nocardia.

Abstract: Utilization of various hydrocarbons by microbes is well known (Beerstecher, 1954), but little has been reported on the cellular composition of hydrocarbongrown cells. No doubt it has been assumed that these cells differ little from those cultivated on nonhydrocarbon substrates and, in general, this assumption is probably true. But it is recognized that substrates and cultural conditions can influence not only extracellular products but also the composition of microbial cells. In the course of studying conditions for rapid utilization of hydrocarbons by microbes we have observed a marked increase in the lipid content of nocardia grown on liquid n-alkanes. This was noted particularly in the case of n-hexadecane and n-octadecane cultures. As much as 70 per cent of the cellular material formed from these substrates can be extracted with fat solvents. This lipid consists principally of glycerides and straight-chain waxes. In contrast, nocardial cells grown on n-hexane or n-tridecane contain about the same amount of lipid as glucose-grown cells, less than 30 per cent, and no waxes. This paper describes the conditions used for cultivating a soil-isolated nocardia on liquid n-alkanes; the conversion of n-alkane to gross cellular products; and some of the factors which influence growth and cellular lipid formation.

Plastic film zipper bag having straightened heat seals

Abstract: In the manufacture of thermoplastic film zipper bags and the like heat sealing the film to the zipper produces a seal line that shrinks, resulting in unsightly apearance. A system and method are disclosed for restoring the shrunk seal line to its orginal length by corrugating and stretching it between mating teeth. A method is also disclosed for restretching the seal without corrugation.