Class 166/235 - Stacked annular sections

Subclass of Class 166 - Wells
Definition: Devices comprising a vertically aligned assembly of annular
No. of patents: 33
Last issue date: 01/18/2011

Number	Title	Issue Date
7870898	Well flow control systems and methods Flow control systems and methods for use in hydrocarbon well operations include a tubular and a flow control apparatus. The tubular defines a well annulus and includes an outer member defining a flow conduit. Fluid communication between the well annulus and the flow...	01/18/2011
7195033	Method and system for determining and controlling position of valve Apparatuses and methods for accurately determining the position of a sliding or rotational sleeve valve in real time are disclosed. The apparatus comprises fiber optic cable based sensors which are either linearly or circumferentially arrayed in the housing that sur...	03/27/2007
7108060	Fracturing different levels within a completion interval of a well Method and apparatus for fracturing different levels of a completion interval in a well. A workstring lowers a fracturing string which, in turn, is comprised of a base pipe which is blank except for perforated sections spaced along its length. Screen may be provided...	09/19/2006
7100686	Controlled-pressure drop liner The invention relates to a controlled-pressure drop liner device comprising a circumscribed filter element (9) centred on a base tube (1) by longitudinal braces in relation to the axis of the tube and arranged according to the diameter of the tube so a...	09/05/2006
7048061	Screen assembly with flow through connectors 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....	05/23/2006
6983796	Method of providing hydraulic/fiber conduits adjacent bottom hole assemblies for multi-step completions A technique for providing auxiliary conduits in multi-trip completions is disclosed. The technique has particular applicability to liner mounted screens which are to be gravel packed. In the preferred embodiment, a protective shroud is run with the gravel pack scree...	01/10/2006
6896057	Connector for expandable well screen A tubing connection arrangement that includes two expandable tubing sections is disclosed. In one embodiment, each of the tubing sections includes a filter screen sandwiched between inner expandable tubing and outer expandable tubing. On expansion of the tubing sect...	05/24/2005
6857475	Apparatus and methods for flow control gravel pack A wellbore completion includes a plurality of longitudinal gravel pack sections disposed within a well, the gravel pack sections being capable of imposing a predetermined substantially radial flow restriction upon fluid production flowing radially through the gravel...	02/22/2005
6830104	Well shroud and sand control screen apparatus and completion method Improved methods and apparatus for completing a subterranean zone penetrated by a wellbore are provided. The improved methods basically comprise the steps of placing a sand control screen (e.g., screens, screened pipes, perforated liners, prepacked screens, etc.) an...	12/14/2004
6814139	Gravel packing apparatus having an integrated joint connection and method for use of same A gravel packing apparatus comprises multiple joints each having substantially the same construction and each having a perforated outer tubular (150, 152) positioned around a sand control screen (154, 156) including a slurry passageway (190, 194...	11/09/2004
6749020	Well screen two step coupled connector structure The well screen two step coupled connector and method includes providing a well screen with a then walled tubular pin having a constant diameter channel and three pin sections of successively increasing diameter. The end of the pin has an annular surface and an angl...	06/15/2004
6715545	Transition member for maintaining for fluid slurry velocity therethrough and method for use of same A transition member (130) coupled between first and second slurry delivery devices (132, 134) for maintaining fluid slurry velocity therethrough is disclosed. Each slurry delivery device (132, 134) has a slurry passageway (144, 164) havin...	04/06/2004
6644406	Fracturing different levels within a completion interval of a well Method and apparatus for fracturing different levels of a completion interval in a well. A workstring lowers a fracturing string which, in turn, is comprised of a base pipe which is blank except for perforated sections spaced along its length. Screen may ...	11/11/2003
6644404	Method of progressively gravel packing a zone A method of progressively gravel packing is provided which enables individual sections of a continuous wellbore portion to be gravel packed in succession. In a described embodiment, multiple well screens are positioned in a wellbore. A continuous portion ...	11/11/2003
6588508	Method and apparatus to reduce trapped pressure in a downhole tool A tool string for use in a well includes a filter sub (or trapped pressure regulator sub) that is used with other components to reduce trapped pressure. The filter sub filters out debris that may occur from various types of downhole operations, such as pe...	07/08/2003
6520254	Apparatus and method providing alternate fluid flowpath for gravel pack completion Apparatus and methods for use in completing a subterranean zone penetrated by a wellbore include a tubular member having a first segment and a second segment, each segment containing a longitudinal bore. The tubular member forms an annulus between itself ...	02/18/2003
6481494	Method and apparatus for frac/gravel packs A method and apparatus for fracturing a formation or gravel packing a borehole extending through an unconsolidated subterranean zone in a formation includes a screen assembly having a length adapted for disposal adjacent the unconsolidated subterranean zo...	11/19/2002
6464007	Method and well tool for gravel packing a long well interval using low viscosity fluids A method and well tool for using a low-viscosity slurry to gravel pack a completion interval. The well tool is comprised of a screen and at least one alternate flowpath which is initially closed to flow by a valve means. Once a sand bridge is formed in th...	10/15/2002
6405800	Method and apparatus for controlling fluid flow in a well A method and apparatus for controlling fluid flow in a well bore is provided. A base pipe having an outer surface and an inner bore is provided. A first screen jacket is placed therearound. A second screen jacket is positioned adjacent the first screen ja...	06/18/2002
6073659	Method and apparatus of removing liquid from underground cavity by directional drilling Underground cavities containing liquid contaminants are remediated by drilling directionally through the cavity and then pulling back pipe with a slotted section extending through the cavity. The pipe is supplied on reels in lengths much longer than in th...	06/13/2000
5992518	Filter for subterranean use A filter for subterranean environments includes an inner support member, a filter body containing a filter medium disposed around the inner support member, and at least one end connector connected to a lengthwise end of the filter body and sealed against ...	11/30/1999
5730223	Sand control screen assembly having an adjustable flow rate and associated methods of completing a subterranean well An adjustable flow rate screen assembly and associated methods of completing a subterranean well provide variable flow rates through downhole sand control screens without restricting access to the well and without requiring overly restrictive screens to b...	03/24/1998
5355948	Permeable isolation sectioned screen A well liner having a selective isolation screen with a limited or less restrictive seal. The well liner includes an elongate base pipe having openings therethrough; surrounded by circumferentially spaced, longitudinal extending spacer bars for forming an...	10/18/1994
5333688	Method and apparatus for gravel packing of wells A method and apparatus for gravel packing wherein a gravel slurry is distributed to different points of a wellbore annulus from a internal passage within the apparatus thereby protecting the passage from damage during operation. The apparatus is comprised...	08/02/1994
5083614	Flexible gravel prepack production system for wells having high dog-leg severity A gravel prepack production system characterized by a flexible gravel prepack comprising an inner tube and a plurality of discrete annular filter elements carried on the inner tube and longitudinally spaced therealong by spacers. The tube is free to flex ...	01/28/1992
5069279	Well structure having a screen element with wire supporting rods A well structure suitable for use as a shallow well having a large diameter includes a well curb, and one or more water intake segments mounted in a part of the well curb. Each water intake segments includes a frame made of a vertically arranged pair of f...	12/03/1991
5046892	Apertured pipe segment An apertured pipe segment is disclosed which is of injection moulded plastics construction and can be used to form a well screen or sub-soil drainage pipe. Each aperture comprises a longitudinally extending inner slot which extends from a slot mouth inwar...	09/10/1991
5033549	Method for placing a gravel pack in an oil well with an electric wireline A method for setting a gravel pack in an oil well through tubing situation includes the steps of running a tool body into the well using an electric wireline. The tool body is precisely positioned relative to the surrounding casing, and radially extending...	07/23/1991
4770336	Well screen centralizer and method for constructing centralizer and for joining of well screens A well screen centralizer with a longitudinal flow passage therethrough which has a well screen insert that increases the producing area of the well screen by reducing the amount of blank non-producing tubing length usually used to accommodate non-well sc...	09/13/1988
4752394	Bore screen A bore screen for use in filtering fluids which are extracted from bores or wells and which comprises a stack of annular plastics material rings which are clamped together in face-to-face relationship. Each ring is formed on opposite, first and second, fa...	06/21/1988
4624330	Rotary drill bit with strainer element A rotary drill bit comprising a tubular strainer element co-axially arranged within the body of the bit and being provided with narrow axial slots arranged to prevent solid debris from passing to the nozzles of the bit. The self-cleaning ability of the st...	11/25/1986
4014387	Apparatus and process for drawing water from a water-bearing strata In order to draw water free of sand from a well bored into a water-bearing strata a cylindrical permeable body is located concentrically within the perforated wall of the well. The cylindrical body may in turn comprise concentric outer and inner slotted t...	03/29/1977
3965981	Pre-packed well points A pre-packed well point is provided having a central tube perforated only at the bottom end thereof. Coaxial with the inner tube is an outer screen and the inner and outer tubes are joined by suitable top and bottom end caps. Packed between the outer scre...	06/29/1976

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Class 166/235 - Stacked annular sections