Abstract: An arrangement for alleviating the problem of differential sticking of a drill string in rotary drilling of a highly deviated borehole by grinding and reducing the size of the cuttings generated by the drilling operation to enable the mud-return flow to better remove the cuttings from the wellbore. At least one full gage, rotating stabilizer-grinder is placed along the drill string at a selected point in the high angle section of the hole. In one embodiment, this stabilizer-grinder is constructed with an inner mandrel which is part of and rotates with the drill string and powers the first part of the grinder, and an outer mandrel which is free to rotate separately from the inner mandrel. The outer mandrel is full gage and fits against the borehole wall such that it remains stationary with respect thereto. The outer mandrel thus forms the second part of the grinder on which cuttings are broken and reduced in size.

Abstract: A zeolite catalyst composition suitable for para-selective conversion of substituted aromatic compounds, e.g., conversion of aromatics to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. Such a composition comprises a zeolite catalyst component having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, and a minor amount, e.g., at least 0.25 weight percent, of copper, silver and/or gold, and optionally phosphorus.

Abstract: A method for recovering oil from a tilted oil-bearing reservoir having a water zone in fluid communication with and directly below an oil zone wherein a large amount of solvent is injected along the water-oil interface so that a part of the solvent fingers into the oil, lowering its viscosity and making the oil more mobile for production. The remainder of the solvent is driven through the reservoir by a water flood wherein the rate is controlled slow enough that gravity minimizes fingering of the water into the oil layer, sweeping oil toward the production well. Solvent stimulation of the producing well provides additional incremental recovery and encourages the flooded oil toward the production well.

Abstract: A method for enhancing both the pour point and viscosity index (V.I.) of crude oils of high wax content by contact of the same with two different zeolites, such as ZSM-5 and ZSM-35 is disclosed.

Abstract: A method is disclosed for restoring to environmentally acceptable levels the ammonia content in a subterranean formation which has been previously subjected to in situ oxidative leaching employing an ammonium leach solution by flushing the formation with carbonic acid.

Abstract: A modified zeolite catalyst composition useful for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified prior to use by treatment with compounds of Group VA of the Periodic Chart (V, Nb and Ta), and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.

Abstract: A process for the selective alkylation of phenol or its alkyl ethers, in the presence of a particular type of zeolite catalyst, to produce a product rich in 4-alkyl phenyl alkyl ethers (e.g. 4-methylanisole). The zeolite is characterized by a Constraint Index of 1 to 12 and a silica to alumina mole ratio of at least 12, and may optionally contain a minor amount of a difficultly reducible oxide.

Abstract: A process for selective cracking of 1,4-disubstituted benzene compounds having at least one polar substituent. Mixtures containing isomers of such a compound are brought into contact with a specified type of shape selective crystalline zeolite catalyst under conditions of temperature and pressure conducive to reaction of said benzene compound, thereby selectively reacting the 1,4-disubstituted isomer in preference to the 1,2- and 1,3-disubstituted isomers of said polar benzene compound. The shape selective zeolite catalysts employed herein are crystalline zeolites characterized by a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12.

Abstract: Lubricating oils containing certain borated derivatives of hydroxyl-containing acid esters have been found to be effective friction modifiers and to aid in the reduction of fuel consumption in internal combustion engines.

Abstract: A method for determining the concentration of a brine tolerant sulfonate surfactant in a complex mixture containing, in addition to said brine tolerant sulfonate surfactant, lignosulfonates, crude oil, salts, and water and, optionally, petroleum sulfonates and alcohols, that comprises incorporating into the brine tolerant sulfonate surfactant molecule a small amount of deuterium prior to addition to the complex mixture and determining the concentration of the brine tolerant sulfonate surfactant by measuring its infrared absorption at 2150 cm.sup.-1.

Abstract: In a fluid catalytic cracking process, the regeneration temperature can be eliminated as an operating constraint, catalyst losses can be held constant or reduced, carbon on regenerated catalyst can be reduced and the coke burning capacity of the regenerator can be increased by the combination of cooling the hot regenerated catalyst and increasing the oxygen content of the inlet regeneration air.

Abstract: A process is provided for modifying ZSM-5 type zeolite catalysts with gaseous nitrogen-based treating agents in order to enhance the para-selective properties of such catalysts for the conversion of aromatic materials to dialkyl-substituted benzene compounds. Nitrogen-based treating agents include nitrogen dioxide and ammonia. Catalyst compositions so treated can be used in alkylation, transalkylation or disproportionation processes to provide product mixtures having exceptionally high concentrations of the para-dialkylbenzene isomer.

Abstract: Waterflooding process for the recovery of oil from a subterranean formation in which at least a portion of the injected water preferably comprises a preferentially oil-soluble alcohol, a sulfobetaine, a quaternary ammonium compound containing at least one long chain hydrocarbyl group and a quaternary ammonium compound with short chain hydrocarbyl groups. This formulation serves both as a surfactant and a mobility control agent.

Abstract: An arrangement for drilling deviated wellbores, such as in extended reach drilling, which is particularly designed to reduce the chance of pressure-differential sticking of the drill string by removing the drilling cuttings from the wellbore bottom by reverse circulation of the drilling fluid using a pump powered by the cones of the rotary bit. The drill string is turned by a rotary, and as the drill string turns, the cones turn as they are rolled on the bottom of the hole. A power drive is taken off the bit cones, and powers a pump which pumps mud from the annulus, around and through the bit, and up the drill pipe. In this way, troublesome cuttings are kept out of the annulus, and the cuttings are more effectively removed by pumping up and out the drill pipe.

Abstract: A novel means of inhibiting the corrosion of hydraulic systems is provided wherein hydraulic fluid containing moisture is contacted with a dessicant such as zeolite 13X thereby substantially removing said moisture.

Abstract: Metal salts of partially borated, partially phosphosulfurized polyols and hydroxyl-containing esters are effective multifunctional friction reducing, antioxidant and copper strip passivating additives when used in lubricating media.

Abstract: A fail-safe guy line system for marine structures. In the event of cable failure near the water surface, a braking device, such as a cable clamp, can be wedged into a sheave or fairlead to prevent loss of the guy line.

Abstract: Blended polyolefin resins containing linear low density polyethylene copolymers (LLDPE) are disclosed for making seamless-wall handled strap bags from thin tubular monolayer film consisting essentially of a homogeneous binary blend of resins. The improved resin blend system employed in this invention contains a predominant amount of highly-branched low density polyethylene structure. A minor amount of LLDPE constitutes the other resinous component, preferably in the amount of 10 to 40 parts by weight per 100 parts of polyolefin resin. The LLDPE resin may comprise a copolymer of ethylene with at least one alpha-olefin having 4 to 12 carbon atoms, and having a density less than 0.94.

Abstract: A down-flow apparatus for continuous crystallization of zeolites comprises a vertically-positioned reactor having at least one reactor inlet port at the top thereof and at least one product egress port at the bottom thereof. The reactor is equipped with an inside stirrer extending throughout the length of the reactor and with heating means surrounding the reactor. Product and spent liquids are collected into one or more product collectors at the bottom of the reactor wherein spent liquids are decanted from the crystalline product settling to the bottom. The entire assembly is pressurized with an inert gas, e.g., air, nitrogen, helium (He), to prevent water boiling at the reaction temperature.