Shell Oil Comapny

Kraton Polymers U.S. LLC

David Ralph Stewart

Frederick Henry Kreisler Rambow

Jeremiah Glen Pearce

Dale Lee Handlin, Jr

Dennis Edward Dria

Michele Scott Albrecht

James R Erickson

John David Wilkey

Frederick H Rambow

Bing Yang

Eleanor Meyer De Groot

A system for use in a wellbore, comprises a length of casing, a structure that is configured to deform with deformation of the casing, said structure being affixed to the length of casing at substantially the same radial position along the length of casing, and a sensing device that is configured to measure deformation of the structure, said device comprising a plurality of sensors that are distributed with respect to at least one of the length of said structure and the periphery of said structure.

Monitoring system for well casing

Systems and methods for monitoring a well are configured to identify or analyze various issues affecting the well including corrosion, cement quality, inflow, and fluid migration.

Use of fiber optics to monitor cement quality

An apparatus and method for continuous, passive detection and measurement of tensile and compressional strain in a structure utilizing a shielded optic fiber, the optic fiber having one or more Bragg gratings thereon, the gratings and shield being disposed in a curved path on the structure and a baseline response for the grating is made using an optical source and detector. Changes in tensile or compressional forces on the structure will result in changes in the curve of the grating, resulting in a frequency shift for the returned light.

Apparatus and method for monitoring compaction

A process for pelletizing elastomeric anionically polymerized polymers which comprises subjecting the polymer to solid state extrusion in a single screw extruder with a length to diameter ratio of 10:1 or less wherein the barrel of the extruder has longitudinal grooves and transversally extending pins to increase mixing wherein the temperature in the extruder is sufficient to agglomerate or melt the polymer but be lower than the degradation temperature of the polymer and the speed of the extruder screw is from 30 to 100 rpm.

Conversion of sticky elastomeric polymer crumb into pellets without polymer degradation

This invention is an improvement upon the current process for the production of block copolymers, especially hydrogenated block copolymers, of conjugated dienes and/or vinyl aromatic hydrocarbons which comprises anionically polymerizing the monomers in an inert hydrocarbon solvent in the presence of an alkali metal initiator whereby a polymer cement is produced and then contacting the cement with hydrogen under hydrogenation conditions in the presence of a hydrogenation catalyst. This invention and the improvement to the foregoing process comprises reducing the viscosity of the polymer cement by adding to it, preferably prior to hydrogenation (if the polymer is to be hydrogenated), from 2 to 50 % wt of a polar compound. The polar compound must be a poorer solvent for the block copolymer than is the inert hydrocarbon solvent. Preferred polar compounds include diethyl ether, tetrahydrofuran, diethoxyethane, monoglyme, diglyme, diethoxypropane, dioxane ortho-dimethoxybenzene, and the like.

Increased throughput in the manufacture of block copolymers by reduction in polymer cement viscosity through the addition of polar solvents

A crosslinkable low viscosity short arm star polymer blend made by anionically polymerizing a conjugated diene and, optionally, a vinyl aromatic hydrocarbon to form living polymer arms and coupling said arms with a coupling agent for star polymers and blending said star polymer with a compatible organic liquid such that the amount of organic liquid in the blend ranges from 5 to 50 percent by weight. A preferred embodiment is an epoxidized version which is selectively epoxidized at the exterior sections of the polymer to enhance the crosslinkability of the polymer.

Crosslinkable low viscosity star polymer blends

A thermoplastic laminated billet is made by dielectrically heating a stack of thermoplastic billets or layers within a mold press, wherein the sequence of dielectrically heatable and non-heatable individual layers is such that no more than a tie layer separates a heatable and non-heatable layer so that only that portion of the non-heatable layer nearest the heatable layer or layers melts. The laminated billet is formed within the mold press that has electrodes formed therein, the electrodes capable of impressing on the dielectrically heatable layers used to form the laminated billet sufficient energy to melt the heatable layers and at least a portion of the adjacent non-heatable layers.

Forming laminated billets from individual billets

A laminate having at least one non-dielectrically heatable first material, (processable at an optimum starting temperature), and at least one dielectrically-heatable second material, (processable at a higher optimum finish temperature), is initially brought to its starting temperature. The dielectrically heatable second material is then heated to its finish temperature, by being subjected to radio frequency (RF) or microwave radiation at selected frequency(s). The laminate is then stretched so as to shape the laminate while the first material and second material are at or near to their optimum processing temperatures.

Method of shaping a laminated thermoplastic billet

A thermoplastic laminated billet is made by dielectrically heating a stack of thermoplastic layers within a mold press, wherein the sequence of dielectrically heatable and non-heatable individual layers is such that no more than a tie layer separates a heatable and non-heatable layer so that only that portion of the non-heatable layer nearest the heatable layer or layer melts. The laminated billet is formed within the mold press that has electrodes formed therein, the electrodes capable of impressing on the dielectrically heatable layers used to form the laminated billet sufficient energy to melt the heatable layers and at least a portion of the adjacent non-heatable layers.

Mold press with dielectric electrodes

A plastic container having enhanced insulation is made from a partially-laminated billet having a laminated outer periphery and gas trapped between the unlaminated portion of the billet layers, by heating the billet to a temperature below the softening point of at least one of the layers, which expands the gas trapped between the layers and separates the unlaminated layers. The billet is then clamped about its outer periphery and drawn into the shape of the container using solid-phase forming techniques. The separated layers insulate the contents of the container from the surrounding environment.

Plastic container with enhanced insulation

A process is disclosed for the fabrication of a thermoplastic container having a lid bonded thereto. The container and lid are formed from laminated thermoplastics wherein at least one of the layers that forms the laminate is dielectrically heatable. The heatable layers of the cup and lid are placed in contact with one another, dielectrically heated, and melt together to form a continuous bonded area or lid seam between the cup and lid. The materials of the cup and lid are selected such that the resultant bonded area forms an exygen barrier between the contents of the container and the outside environment. The strength of the bonded area is selected such that the lid may be manually-removed from the container.

Growing community of inventors

Richmond, TX, United States of America

David Ralph Stewart