Abstract: Fluids produced from a fractured subterranean formation may be monitored by pumping into the well a fracturing fluid which contains a tracer. The method may be used to monitor produced hydrocarbons as well as produced water. The tracer may also be used in a sand control, frac pack or acid fracturing operation. The tracer is a component of a composite where it may be immobilized within a matrix (such as an emulsion) or porous particulate, onto a support or compressed with a binder into a solid particulate. The tracer may be slowly released from the composite.

Abstract: Methods of introducing a treatment fluid into a subterranean formation having a filtercake deposited thereon, wherein the treatment fluid comprises a base fluid and an inclusion complex comprising a cyclodextrin compound and an acid precursor ester, and wherein the cyclodextrin compound delays hydrolysis of the acid precursor ester; contacting the treatment fluid with the filtercake; and hydrolyzing the acid precursor ester, thereby removing at least a portion of the filtercake.

Abstract: Systems, compositions, and methods usable to stimulate a formation include a first supply subsystem adapted to provide a first medium to the formation and a pressure subsystem that includes a pump in communication with the first medium to pressurize the first medium to a pressure sufficient to stimulate the formation. Usable media can include non-gelled liquid alkanes, halogenated hydrocarbons, foamed hydrocarbons, a fluidized solid proppant material that behaves as a liquid under threshold conditions, or a liquid material adapted to solidify under threshold conditions. A proppant can be supplied in addition to the first medium when performing fracturing operations. Usable proppant can include materials having a size or density adapted to facilitate buoyancy, hollow materials, composite materials, porous materials, or crystalline materials.

Abstract: Methods including providing a silane composition selected from the group consisting of a dipodal silane, a long-chain silane, and any combination thereof, wherein the dipodal silane includes at least two carbon chains having between about 2 and about 36 carbon atoms, and wherein the long-chain silane includes at least one carbon chain having between about 2 and about 36 carbon atoms; coating proppant particulates with the silane composition, thereby forming silane composition coated proppant particulates; and introducing the silane composition coated proppant particulates into at least one fracture in a subterranean formation, thereby stabilizing loose particulates therein.

Abstract: Methods including deactivation and activation of permeability modifiers for use in subterranean formation operations. A first treatment fluid may be introduced into a subterranean formation having a first treatment zone having a first aqueous permeability value, the first treatment fluid comprising a first aqueous base fluid and a deactivated permeability modifier. The deactivated permeability modifier may be adsorbed onto a surface of the first treatment zone. A second treatment may thereafter be introduced into the subterranean formation, the second treatment fluid comprising a second aqueous base fluid and a cyclodextrin compound. The second treatment fluid may contact the deactivated permeability modifier to activate the permeability modifier by complexing the deactivating surfactant with the cyclodextrin compound, thereby forming an activated permeability modifier adsorbed onto the surface of the first treatment zone and reducing the aqueous permeability of the first treatment zone.

Abstract: The present invention relates to methods of treating subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing a first aqueous composition and a second aqueous composition in a subterranean formation. The placing includes injecting the first aqueous composition through a tubular passage in a wellbore. The placing also includes injecting the second aqueous composition through an annular passage in the wellbore.

Abstract: A well stimulation method includes using a well formation containing fractures and placing proppant in the fractures. A plurality of individual particles of the proppant includes a core containing a swellable material. The method includes swelling the core and increasing a size of the fractures using the swelling core. A proppant particle includes a core containing a swellable material and a dissolvable layer encapsulating the core.

Abstract: A well completion method can comprise, in a single trip into a wellbore, the following steps being performed for each of multiple zones penetrated by the wellbore: abrasively perforating the zone with a tubing deployed perforating assembly, fracturing the perforated zone with flow from surface via a well annulus, and then plugging the fractured zone with a removable plug substance, the perforating assembly displacing in the wellbore while the fractured zone is being plugged. Another well completion method can comprise, in a single trip into a wellbore, the following steps being performed for each of multiple zones penetrated by the wellbore: perforating the zone using an abrasive perforator, then displacing the perforator in the wellbore away from the earth's surface, then fracturing the zone, and plugging the fractured zone with a flowable plug substance.

Abstract: Process for tertiary mineral oil production in which an aqueous injection fluid comprising at least a water soluble polyacrylamide-(co)polymer dissolved in the aqueous fluid is injected into a mineral oil deposit and the aqueous injection fluid is prepared by mixing a liquid dispersion polymer composition comprising particles of polyacrylamide-(co)polymers dispersed in an organic, hydrophobic liquid with an aqueous fluid. Preferably, the process is carried out on an off-shore production site.

Abstract: A method comprises obtaining or providing a treatment fluid comprising compounds comprising a structure of the formula (I) or (Ia) or compounds of the formula (Ib) and placing the treatment fluid in a subterranean formation.

Abstract: A well system includes a drop plug element and an internal plug seat in an internal flow path of a well tubing. At least one of the plug seat or the drop plug element includes a polymer that is deformable, having a first stiffness when subjected to a first strain rate, to allow the drop plug element to pass through the plug seat. The polymer resists deformation, having a second, higher stiffness when subjected to a second, higher strain rate, to resist allowing the plug element to pass through the plug seat and to seal the plug element and plug seat.

Abstract: A well treatment for treating a well includes discrete stop loss elements to seal a fluid loss opening of a well. The discrete stop loss elements include polymer resistive to deformation with an initial stiffness in response to an initial strain rate of the polymer to produce a specified initial pressure signal and deformable with a subsequent, lower stiffness in response to a subsequent, lower strain rate of the polymer to produce a subsequent, different specified pressure signal.

Abstract: A wellbore cementing plug includes a plug element including a polymer. The polymer is deformable at a first stiffness when subjected to a first strain rate to allow the plug element to pass through a wellbore while sealing against passage of cement past the plug element. The polymer resists deformation at a second, higher stiffness when subjected to a second, higher strain rate to resist allowing the plug element to pass through the wellbore while sealing against passage of cement past the plug element.

Abstract: Methods include the injection of a gelled, gelling or gellable composition into a horizontal section of a well at a location, where produced well gases or a combination of well gases and injected gases are sufficient to move the pill through the horizontal section into heal section, sweeping the horizontal section of accumulated liquids. Once in the heal section, the pill and the accumulated liquids are uplifted to the surface resulting in a cleaned well.

Abstract: A container incorporating post-consumer recycled (“PCR”) plastic and a method of making that type of container. The container utilizes a layer of polypropylene or EVOH or a film of fluorinated polyethylene toward the interior from the recycled plastic to prevent contaminants from the latter entering the container's contents. When utilizing EVOH, the container usually has an additional layer of polyethylene or polypropylene covering the EVOH to prevent its deterioration by moisture. Making the container involves first composing a resin including the recycled plastic. Forming the various layers listed above produces a container that includes recycled plastic and a barrier to limit the migration of contaminants f from the recycled material to the container's contents. This permits the use of the resulting containers for food. For a fluorinated polyethylene film, fluorination can occur either during or after the container's formation.

Abstract: A backseamed casing has a casing film comprising a first outer layer and a second outer layer, the first outer layer containing a polyamide having a melting point of from about 250-400.degree. F., and the second outer layer containing a polyamide having a melting point of from about 250-400.degree. F. A butt-sealed backseamed casing has a casing film to which a butt-seal tape film is sealed, the casing film having an inside layer containing a polyamide having a melting point of from about 250-480.degree. F., and an outside layer comprising polyolefin, with the butt-seal tape film comprising polyolefin. A heat-shrinkable film has a first outer layer, a second outer layer, and an inner layer. The first outer layer contains a first polyamide having a melting point of from about 250-400.degree. F.; and the second outer layer contains a second polyamide having a melting point of from about 250-480.degree. F.

Abstract: In an electroluminescent element in which a first electrode, a first insulating layer, a luminescent layer, a second insulating layer and a second electrode are sequentially laminated on a substrate, the luminescent layer has a first and second luminescent portions which are located apart from each other. A color filter is provided above one of the first and second luminescent portions. The second electrode includes a first part electrode for activating the first luminescent portion and a second part electrode for activating the second luminescent portion. The color filter is formed so that a portion extending from a bottom face of the color filter is inserted into a gap between the first and second luminescent portions to surround an upper face and side faces of the one of the first and second luminescent portions.

Abstract: Mixtures ofA) neutral polythiophenes of formula (I), ##STR1## wherein R.sub.1 and R.sub.2 separately from one another represent hydrogen or a C.sub.1-4 alkyl group or together form an optionally substituted C.sub.1-4 alkylene radical, preferably a methylene radical optionally substituted by alkyl groups, an ethylene-1,2 radical optionally substituted by C-.sub.1-12 alkyl or phenyl groups, or a cyclohexylene-1,2 radical, andB) organic compounds containing dihydroxy or polyhydroxy and/or carboxyl groups or amide groups or lactam groups,as well as transparent, electrically conducting coatings made therefrom and electroluminescent systems containing a conductive layer produced from the abovementioned mixtures as the electrode.

Abstract: Described is an organic electroluminescent device material which comprises a coumarin derivative represented by the following formula (1): ##STR1## wherein R.sub.1 to R.sub.4 each independently represents a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl, alkoxy, thioalkyl, aryloxy, arylthio, carbocyclic aromatic or heterocyclic aromatic group; and an organic electroluminescent device fabricated using the material. According to the present invention, a red-emitting material with high brightness and high luminous efficiency indispensable for full color display can be provided.

Abstract: An improved, coated microwaveable paperboard or container useful for forming substantially rigid food containers such as plates, bowls, trays and the like and a process from producing the improved, coated paperboard is provided. The microwaveable paperboard and food containers, at a temperature in excess of 430.degree. F. evolves less than 0.1 milligrams of benzene per square inch, preferably less than 0.04 milligrams. Said paperboard and food containers are produced from a sized paperboard blank wherein a base coat and top coat comprise a mixture of an inorganic pigment and aliphatic copolymers. A base coat comprising an aliphatic latex and a pigment is applied directly to the paperboard, and a top coat comprising the same or different aliphatic polymer latex and a pigment is applied directly to the base coat to form the coated containers. Microwave susceptor layers are coated on the top coat. These containers are used to microwave and brown food at temperatures in excess of 430.degree. F.