Abstract: A connector for providing a pathway between a first screened tubing and a second screened tubing. In one embodiment, the connector includes an annular pipe coupled to the first screened tubing at a first end and coupled to the second screened tubing at a second end. The annular pipe defines a plurality of channels disposed therein. The channels are configured to provide the pathway between the first screened tubing and the second screened tubing.

Abstract: The present invention provides a method for manufacturing a wellscreen and a wellscreen that have the mechanical properties of a direct-wrap wellscreen and the precise slot tolerance of a slip-on wellscreen. In one embodiment, a method for manufacturing a wellscreen for use in a wellbore is provided. The method includes disposing a filter subassembly on a base pipe sized so that there is annulus between the base pipe and the filter subassembly. The filter subassembly includes a length of wire wrapped and welded along a plurality of rods so that a slot is defined between adjacent coils of wire. The method further includes expanding the base pipe so that the slot is not substantially altered, thereby substantially reducing or eliminating the annulus.

Abstract: A fluid conditioning system designed to be installed between the well perforation and the intake of a pump used to effect artificial lift is used to filter and chemically treat production fluids. The fluid conditioning system is an apparatus that provides scale inhibitors and/or other chemical treatments into the production stream. In some embodiments, the fluid conditioning system may be a part of the production stream filter wherein the filtering material is comprised of a porous medium that contains and supports the treatment chemical. In other embodiments, the chemical treatment may be accomplished by the gradual dissolution of a solid phase chemical. The treating chemical may be recharged or replenished by various downhole reservoirs or feeding means. In yet other embodiments, the treating chemical may be replenished from the surface by means of a capillary tube.

Abstract: An apparatus and method of controlling the flow of hydrocarbons into and/or out of a string of tubing disposed in a wellbore. In one embodiment, the apparatus comprises a tubular member having at least one aperture formed in a wall thereof and a sleeve disposed radially outward of the tubular member. The sleeve is selectively movable between a first position and a second position to control the flow between the outside and the inside of the tubular member. In one aspect, the apparatus further comprises a biasing member disposed adjacent the sleeve and adapted to apply a force against the sleeve in an axial direction and further comprises a piston adapted to receive a hydraulic pressure to move the sleeve against the force of the biasing member. In another aspect, the apparatus further comprises a electromechanical device adapted to selectively move the sleeve between the first position and the second position and further comprises a control line adapted to conduct an electrical current.

Abstract: An apparatus and method of controlling the flow of hydrocarbons into and/or out of a string of tubing disposed in a wellbore. In one embodiment, the apparatus comprises a tubular member having at least one aperture formed in a wall thereof and a sleeve disposed radially outward of the tubular member. The sleeve is selectively movable between a first position and a second position to control the flow between the outside and the inside of the tubular member. In one aspect, the apparatus further comprises a biasing member disposed adjacent the sleeve and adapted to apply a force against the sleeve in an axial direction and further comprises a piston adapted to receive a hydraulic pressure to move the sleeve against the force of the biasing member. In another aspect, the apparatus further comprises a electromechanical device adapted to selectively move the sleeve between the first position and the second position and further comprises a control line adapted to conduct an electrical current.

Abstract: The present invention provides isoxazole derivatives represented by the following formula (I): (wherein R1 represents a hydrogen atom, C1-C20 hydrocarbon group or —C(?O)OR1a (wherein R1a represents a C1-C10 alkyl group, etc.); R2 and R3 represent a hydrogen atom, halogen atom, hydroxy group, C1-C20 alkyl group or C6-C20 aryl group, etc.; R4 represents a hydrogen atom, halogen atom, hydroxy group, cyano group, nitro group, amino group, C1-C20 hydrocarbon group, C1-C10 alkoxy group, C1-C10 acyl group, 5- to 7-membered heterocyclic group, etc.; R5 represents a hydrogen atom, halogen atom, hydroxy group, optionally substituted C1-C20 hydrocarbon group, C1-C20 alkoxy group, 5- to 7-membered heterocyclic group, etc.; and, n represents 0, 1, 2, 3 or 4), and a process of producing the same. The compounds are useful as intermediates for synthesis of pharmaceutical compounds, agricultural chemicals, dye compounds, etc. having the isoxazole skeleton.

Abstract: In one aspect of the invention apparatus and methods are provided for completing a wellbore using expandable sand screen. An apparatus including a section of expandable sand screen, and an expanding member is disposed in the wellbore on a tubular run-in string. Thereafter, the expandable sand screen is expanded in a producing area of the wellbore.

Abstract: A connector for providing a pathway between a first screened tubing and a second screened tubing. In one embodiment, the connector includes an annular pipe coupled to the first screened tubing at a first end and coupled to the second screened tubing at a second end. The annular pipe defines a plurality of channels disposed therein. The channels are configured to provide the pathway between the first screened tubing and the second screened tubing.

Abstract: An apparatus and method of controlling the flow of hydrocarbons into and/or out of a string of tubing disposed in a wellbore. In one embodiment, the apparatus comprises a tubular member having at least one aperture formed in a wall thereof and a sleeve disposed radially outward of the tubular member. The sleeve is selectively movable between a first position and a second position to control the flow between the outside and the inside of the tubular member. In one aspect, the apparatus further comprises a biasing member disposed adjacent the sleeve and adapted to apply a force against the sleeve in an axial direction and further comprises a piston adapted to receive a hydraulic pressure to move the sleeve against the force of the biasing member. In another aspect, the apparatus further comprises a electromechanical device adapted to selectively move the sleeve between the first position and the second position and further comprises a control line adapted to conduct an electrical current.

Abstract: An apparatus and method of controlling the flow of hydrocarbons into and/or out of a string of tubing disposed in a wellbore. In one embodiment, the apparatus comprises a tubular member having at least one aperture formed in a wall thereof and a sleeve disposed radially outward of the tubular member. The sleeve is selectively movable between a first position and a second position to control the flow between the outside and the inside of the tubular member. In one aspect, the apparatus further comprises a biasing member disposed adjacent the sleeve and adapted to apply a force against the sleeve in an axial direction and further comprises a piston adapted to receive a hydraulic pressure to move the sleeve against the force of the biasing member. In another aspect, the apparatus further comprises a electromechanical device adapted to selectively move the sleeve between the first position and the second position and further comprises a control line adapted to conduct an electrical current.

Abstract: In one aspect of the invention apparatus and methods are provided for completing a wellbore using expandable sand screen. An apparatus including a section of expandable sand screen, and an expanding member is disposed in the wellbore on a tubular run-in string. Thereafter, the expandable sand screen is expanded in a producing area of the wellbore.

Abstract: In one aspect of the invention apparatus and methods are provided for completing a wellbore using expandable sand screen. An apparatus including a section of expandable sand screen, and an expanding member is disposed in the wellbore on a tubular run-in string. Thereafter, the expandable sand screen is expanded in a producing area of the wellbore.

Abstract: In one aspect of the invention apparatus and methods are provided for completing a wellbore using expandable sand screen. An apparatus including a section of expandable sand screen, and an expanding member is disposed in the wellbore on a tubular run-in string. Thereafter, the expandable sand screen is expanded in a producing area of the wellbore.

Abstract: An apparatus and method of controlling the flow of hydrocarbons into and/or out of a string of tubing disposed in a wellbore. In one embodiment, the apparatus comprises a tubular member having at least one aperture formed in a wall thereof and a sleeve disposed radially outward of the tubular member. The sleeve is selectively movable between a first position and a second position to control the flow between the outside and the inside of the tubular member. In one aspect, the apparatus further comprises a biasing member disposed adjacent the sleeve and adapted to apply a force against the sleeve in an axial direction and further comprises a piston adapted to receive a hydraulic pressure to move the sleeve against the force of the biasing member. In another aspect, the apparatus further comprises a electromechanical device adapted to selectively move the sleeve between the first position and the second position and further comprises a control line adapted to conduct an electrical current.

Abstract: The present invention provides an apparatus for use in a wellbore to compensate for pressure differentials between fluid in the wellbore and fluid in an oil bearing formation therearound. In one aspect of the invention, an apparatus is provided for insertion in a string of screened tubulars in a horizontal wellbore. The device includes an inner tubular body portion having apertures in the wall thereof for passing oil, an outer tubular body and a pathway therebetween permitting oil from a formation to migrate into the inner body. Disposed around the inner body is an axially movable member to selectively cover and expose the apertures of the inner body, thereby permitting fluid to flow therethough.

Abstract: A subterranean filter to remove particles from production fluid in a well includes a perforated inner member, at least one filter membrane made of a non-woven polymer material and a metal braided layer installed around the membrane and inner member to provide a filter having improved permeability and resistance to chemical and physical forces.