Abstract: Many active agents, such as insecticides, herbicides and fungicides are relatively insoluble in aqueous media. In order to apply them efficiently to crops it is thus necessary to formulate them in a manner that facilitates their dilution in the water based spray media used in practice, by the farmer or contract spray operator. The present invention relates to aqueous dispersions of active agents such as insecticides, herbicides and fungicides, in particular such dispersions in which the particles are of sub-micron diameter.

Abstract: An aqueous-based downhole fluid having a lubricant therein may be circulated within a subterranean reservoir wellbore where the downhole fluid may be or include a drilling fluid, a completion fluid, a fracturing fluid, a drill-in fluid, a workover fluid, and combinations thereof. The lubricant may include a clay stabilizer and a vegetable oil derivative, such as but not limited to, a sulfonated vegetable oil. The downhole fluid may include the lubricant in an effective amount for lubricating a first surface.

Abstract: Many active agents, such as insecticides, herbicides and fungicides are relatively insoluble in aqueous media. In order to apply them efficiently to crops it is thus necessary to formulate them in a manner that facilitates their dilution in the water based spray media used in practice, by the farmer or contract spray operator. The present invention relates to aqueous dispersions of agents such as insecticides, herbicides and fungicides, in particular such dispersions in which the particles are of sub-micron diameter.

Abstract: A system of couplings and method of use of the couplings to locate a downhole tool connected to coiled tubing, such as a bottom hole assembly, within a selected segment of a casing string. The selected segment of casing may be a ported collar or ported housing that permits the treatment and/or stimulation of the adjacent well formation. The system of couplings may be two, three, or four couplings spaced apart at predetermined lengths. The predetermined lengths may be shorter than typical lengths of casing segments. The distance between the first and second coupling may be substantially identical to the distance between the third and fourth coupling. The use of distances between the couplings that are shorter than the length of conventional casing segments may provide surface indicators as to the location of the bottom hole assembly with a higher confidence than relying on a traditional tally sheet.

Abstract: A coiled tubing cutter assembly comprises a housing configured to be inserted in a length of coiled tubing. The housing forms a main bore and a first pathway through which cutting fluid can flow through the housing and be directed to impinge against an inner surface of the coiled tubing over which the housing is positioned so as to cut the coiled tubing. A sleeve is positioned in the main bore. The sleeve is movable between a first position and a second position within the main bore. The sleeve is configured so as to block the first pathway when in the first position and to allow cutting fluid to pass through the first pathway in the second position. A method of cutting coiled tubing is also disclosed.

Abstract: An aqueous-based downhole fluid having a lubricant therein may be circulated within a subterranean reservoir wellbore where the downhole fluid may be or include a drilling fluid, a completion fluid, a fracturing fluid, a drill-in fluid, a workover fluid, and combinations thereof. The lubricant may include a clay stabilizer and a vegetable oil derivative, such as but not limited to, a sulfonated vegetable oil. The downhole fluid may include the lubricant in an effective amount for lubricating a first surface.

Abstract: A coiled tubing cutter assembly comprises a housing configured to be inserted in a length of coiled tubing. The housing forms a main bore and a first pathway through which cutting fluid can flow through the housing and be directed to impinge against an inner surface of the coiled tubing over which the housing is positioned so as to cut the coiled tubing. A sleeve is positioned in the main bore. The sleeve is movable between a first position and a second position within the main bore. The sleeve is configured so as to block the first pathway when in the first position and to allow cutting fluid to pass through the first pathway in the second position. A method of cutting coiled tubing is also disclosed.

Abstract: The invention is directed to controlling sand production in an oil and/or gas well. A preferred embodiment of the invention is directed to repairing a downhole screen by pumping neutrally buoyant resin coated material into a damaged portion of a gravel pack screen and also into any void behind the damaged portion of the screen. The neutrally buoyant resin provides for the repair of a portion of the screen even if the damaged portion is located on the uphole side of a deviated well. Any excess resin coated material may subsequently be removed from the central passageway of the screen and then circulated to the surface because the resin coated material is neutrally buoyant. Neutrally buoyant resin may be pumped into a well that does not have a sand control system. The porous neutrally buoyant resin allows production of hydrocarbons, but prevents production of sand into the well.

Abstract: The invention relates to novel compositions of biologically active agents containing less than 50% by weight of a low use rate agrochemical active and a dispersing agent, which exhibit enhanced bio-availability on dilution and application in water.

Abstract: The invention relates to novel compositions of biologically active agents containing less than 50% by weight of a low use rate agrochemical active and a dispersing agent, which exhibit enhanced bio-availability on dilution and application in water.

Abstract: The invention is directed to controlling sand production in an oil and/or gas well. A preferred embodiment of the invention is directed to repairing a downhole screen by pumping neutrally buoyant resin coated material into a damaged portion of a gravel pack screen and also into any void behind the damaged portion of the screen. The neutrally buoyant resin provides for the repair of a portion of the screen even if the damaged portion is located on the uphole side of a deviated well. Any excess resin coated material may subsequently be removed from the central passageway of the screen and then circulated to the surface because the resin coated material is neutrally buoyant. Neutrally buoyant resin may be pumped into a well that does not have a sand control system. The porous neutrally buoyant resin allows production of hydrocarbons, but prevents production of sand into the well.

Abstract: Disclosed is an apparatus and method for removing extraneous water from a natural gas well using a miniaturized jet pump assembly and a concentric coiled tubing string. The miniaturized jet pump assembly is attached to a concentric coiled tubing string at the surface and then run into the well as a single unit. Alternatively, the concentric coiled tubing string may be assembled in the well. Once downhole, the jet pump assembly is activated to remove extraneous water from the well thereby facilitating the production of natural gas. Should the functional portion of the jet pump assembly corrode or wear out, that portion may be uninstalled and replaced without removing the jet pump assembly and concentric coiled tubing string from the well.

Abstract: Disclosed is an apparatus and method for removing extraneous water from a natural gas well using a miniaturized jet pump assembly and a concentric coiled tubing string. The miniaturized jet pump assembly is attached to a concentric coiled tubing string at the surface and then run into the well as a single unit. Alternatively, the concentric coiled tubing string may be assembled in the well. Once downhole, the jet pump assembly is activated to remove extraneous water from the well thereby facilitating the production of natural gas. Should the functional portion of the jet pump assembly corrode or wear out, that portion may be uninstalled and replaced without removing the jet pump assembly and concentric coiled tubing string from the well.

Abstract: Apparatus and methods are provided for removing sand and/or other fill material located in a wellbore ahead of a coiled tubing tractor and displacing the material behind the tractor. More particularly, the apparatus and methods of the present invention allow a coiled tubing tractor to drive forward in a wellbore by removing fill material in front of the tractor thereby allowing the wheels or traction pads of the tractor to remain in contact with the wellbore.

Abstract: Apparatus and methods are provided for removing sand and/or other fill material located in a wellbore ahead of a coiled tubing tractor and displacing the material behind the tractor. More particularly, the apparatus and methods of the present invention allow a coiled tubing tractor to drive forward in a wellbore by removing fill material in front of the tractor thereby allowing the wheels or traction pads of the tractor to remain in contact with the wellbore.

Abstract: The invention relates to a process for the preparation of water-dispersible and water-soluble granules which exhibit superior properties in use whilst improving their ease and efficiency of manufacture. The process involves forming a particulate pre-mix of the components of the granule without forming a paste and extruding the pre-mix to form the granules.

Abstract: The invention relates to a process for the preparation of water-dispersible and water-soluble granules which exhibit superior properties in use while improving their ease and efficiency of manufacture. The process involves forming a particulate pre-mix of the components of the granule without forming a paste and extruding the pre-mix to form the granules.

Abstract: The invention relates to novel compositions of biologically active agents containing less than 50% by weight of a low use rate agrochemical active and a dispersing agent, which exhibit enhanced bio-availability on dilution and application in water.

Abstract: A method for cleaning a plugged gravel pack in a subterranean wellbore is provided. The method comprises the steps of using a pressure pulsating jet and a tangential vortex to deliver a pressure pulsating treatment fluid into the gravel pack wherein soluble plugging materials in the gravel pack are dissolved by the treatment fluid and insoluble plugging materials are moved through the gravel pack and circulated out of the wellbore. The treatment fluid is driven more completely into the gravel pack to obtain a greater coverage in the pack to dissolve soluble fines and displace insoluble fines from the interstitial pore spaces of the gravel pack.

Abstract: The invention relates to novel compositions of biologically active agents containing less than 50% by weight of a low use rate agrochemical active and a dispersing agent, which exhibit enhanced bio-availability on dilution and application in water.