Abstract: Apparatus is provided for running, setting and anchoring a liner in a well bore casing, comprising inner and outer bodies with expander and gripping means carried on the bodies to provide means for gripping engagement with casing. A running tool is secured to the bodies and defines drag means thereon to resist longitudinal travel while the apparatus is being mechanically set. A piston element is carried on the running tool and is responsive to fluid pressure entrappable in a piston pressure chamber to hydraulically set the hanger. Mechanical setting means are provided and may be activated to set the hanger upon failure of the hydraulic activation means.

Abstract: A centering device is provided which is adapted to be mounted on a running-in string for subsequent disposal in a well bore. Upper and lower companion supporting members having a plurality of circumferentially spaced openings therein and shoulders circumferentially extending around the uppermost interior of each of the supporting members are provided for receipt of circumferentially spaced and outwardly bowed springs having upper and lower ends overlying the lower portion of the exterior of the supporting members and extending inwardly through the openings. The springs have portions disposed in the openings with the upper and lower ends of the springs respectively engaging the upper and lower shoulder of the support members.

Abstract: Inflatable seal means are provided on the jacket or sleeve of a supporting leg of an offshore structure to seal off therebetween and a piling which the jacket surrounds. The seal means is expanded inwardly to sealingly engage the piling and water is then expelled from the space between the jacket and the piling and grouting material is introduced into the space. Pressure is maintained on the grouting material in the space until it takes a permanent set.

Abstract: a Bourdon tube is situated down hole in an oil well or the like, and has attached thereto a coded wheel which rotates an amount determined by the sensed down hole pressure. The wheel has a number of transparent and opaque concentric bands thereon which form a gray code pattern indicative of a selected range of pressures. A plurality of radiant energy transmitters are radially positioned on one side of the wheel in optical alignment with each of the respective bands. A plurality of radiant energy sensors are positioned and aligned in a like manner on the other side of the wheel for sensing the passing or blocking of the radiant energy by the respective bands formed on the wheel. Included is a digital logic circuit controlled by a temperature responsive oscillator which provides timing signals having a frequency determined by the sensed down hole temperature.

Abstract: A fishing jar is provided for removing stuck objects from a well bore wherein an upward strain on the running string compresses hydraulic fluid in a compression chamber to the amount of the upward jar or impact load desired to be applied to the fish stuck in the well. A pressure relief mechanism is provided to transfer compressed hydraulic fluid within the compression chamber to automatically activate the jarring mechanism when the load on the jar exceeds the recommended operating load. In a preferred form, the relief mechanism is provided in a piston means which has a normally activated flow regulator bypass means therein together with the pressure relief mechanism.

Abstract: A thermally activatable safety valve apparatus is provided with a timing assembly and valve means operationally associated with the timing assembly. First and second fluid transmission means are provided through the apparatus, with one of the first and second fluid transmission means being isolatable by activation of the timing assembly. A thermally activatable trigger means isolates the other of the said first and second fluid transmission means and also initiates the closure of the valve means associated with the timing assembly.

Abstract: An inflatable seal is first effected adjacent the lower end of the annular space between a piling and a jacket of a supporting leg of an offshore structure and thereafter grouting material is inserted into the annular space between the jacket and the piling. After the seal has been effected, means trap inflating fluid in the seal adjacent the lower end of the annular space while grouting material is discharged into the space.

Abstract: An inflatable reinforced sealing element for positioning on a jacket to seal off the space between the jacket and a piling in the jacket, with the jacket and piling being associated with the supporting leg of an offshore structure. Control means are provided for controlling the flow of fluid for inflation of the seal means to sealingly engage the piling and seal off the space, to trap the inflating fluid in the seal means and for controlling the flow of grouting material to the space between the jacket after the seal has been effected.

Abstract: A valve and lubricator apparatus are provided for installation of tools on wire line and the like for use in an oil or gas well while controlling fluids therethrough. The apparatus has valve means having a passageway therethrough for control of fluids through the apparatus. First fluid activatable means are provided for first shifting of the valve means to closed position. Second fluid activatable means also are provided for second shifting of the valve means to the open position. Means for locking the valve in closed position are provided to prevent shifting of the valve to open position by operation of the first fluid means. The second fluid means are operational to unlock the valve means from the closed and locked positions and to shift the valve to open position. The first and second fluid means and the locking means are repeatably and sequentially operational.

Abstract: An apparatus and method are provided for running, setting and anchoring a liner in a well bore casing, said apparatus being connectable to a tubular member extendible to the top of the well. The apparatus comprises an inner longitudinally extending body with an outer longitudinally extending body being around the inner body. Connection means on one of said inner and outer bodies are provided for connection of a liner extending below the apparatus. Expander means are carried on one of the inner and outer bodies, with gripping means being carried on the other of the inner and outer bodies. The gripping means are engagable with the expander means such that the gripping means are shifted into gripping engagement with the casing. A manipulatable tubular running tool is releasably secured to the inner and outer bodies.

Abstract: The present invention relates to a hydraulic fishing jar adapted to be run into a well on a fishing string and connected to a fishing tool in the well bore. The jar comprises inner and outer telescopically interengaged bodies. A plurality of diametrically defined pressure areas, each of said pressure areas having upper and lower sealed ends, are contained within the jar. Tandem piston means are immediate one of said upper and lower sealed ends of each of the pressure areas. Seal means are carried by one of the inner and outer interengagable bodies and are engagable by the other of the inner and outer interengagable bodies and define one of the upper and lower sealed ends of the pressure areas. Seal means are provided between the piston means and one of the inner and outer telescopically interengaged bodies and define one of the upper and lower sealed ends of the pressure areas. The pressure areas are in fluid communication with one another and define a chamber for receipt of lubricant therewithin.

Abstract: A reaction process and product obtained thereby, said process comprising reacting a polymerizable monomeric compound containing a polymerizably reactive vinyl group, such as methyl methacrylate, acrylonitrile, vinyl acetate, or the like, in an aqueous medium at a pH not greater than about 3.5 in the presence of a ceric salt which is soluble in at least one component of said medium, and an inorganic substrate, such as a clayey substrate, e.g., montmorillonite, or the like, capable of initiating polymerization of said monomeric compound, wherein said inorganic substrate is a reducing agent for said reaction.

Abstract: An inflatable securing arrangement includes support means having a longitudinally extending annular elastomer body bonded thereto. An annular reinforcing is also secured to the support means and extends longitudinally thereof, and gripping means are carried by the support means, such gripping means extending longitudinally within the elastomer body whereby movement of the elastomer body by fluid pressure inwardly relative to the support means urges the gripping means inwardly relative to the support means for engaging an object positioned in the support means.

Abstract: Apparatus is provided having particular use in conjunction with setting of longitudinally extendable piling units for anchoring an offshore platform for subsequent use in drilling, production, completion and workover of a subterranean well. The apparatus is designed to be selectively movable within the base of the piling, thereafter the unit is manipulated to urge a plurality of circumferentially extending segmented units to expandably engage within the piling base and, preferably, be locked therewithin, such that the piling may be positionably engaged along longitudinally extending legs of the platform. In a preferred embodiment, the apparatus provides an inflatable element which expands the segments for engagement with the bore of the piling. Alternatively, a modified apparatus utilizes a unit which is inserted within the base of the piling by means of a wire line or related apparatus.

Abstract: A packer with a liner assembly depending from it is packed off and anchored in well casing so that a screen portion of the liner assembly straddles casing perforations within a producing formation. An outer tubing string is lowered through the well casing and engaged with the packer to isolate the formation from well fluids above the packer and to provide a passage to the surface for the formation fluids.A member having crossover fluid passages and external seals engageable with internal seal surfaces in the liner and packer is lowered through the outer tubing string into the liner and packer on an inner string. Fluid passages between the two strings, and between the two strings and the interior and exterior of the liner to control the flow of circulating, washing or acidizing fluids and for placement of gravel on the outside of the liner are selectively opened or closed by manipulation of the inner string.

Abstract: A game apparatus is provided having a planar playing field and at least one player element. A horizontally rotatable disc member is provided for communication with the player element. There is a pivotable element defining a leg on the player element. Magnets are provided for the leg for activating the leg. Magnets below the disc are also provided for magnetic communication with the leg, this magnet being slidable under the disc to cause movement of the leg. The disc and the player are selectively rotatable. First and second control lines are provided for manipulation of the player in relation to the disc by a selectively activatable element, preferably a gun-like mechanism. A ball element is provided for movement on the playing field, the ball element containing a magnet. A cam arrangement is provided for arresting backward movement of the leg.

Abstract: Apparatus is provided for affording transmission of liquid or gas inhibitor within and below the bore of a well packer during production of hydrocarbons in a subterranean well.

Abstract: A well tool having an hydraulically releasable coupler component, a gravel packing apparatus and method for use therewith in a subterranean well having production tubing inserted therein, wherein said coupler comprises hydraulic means for releasing the tubing from the gravel pack apparatus without rotating said tubing when the coupler is activated and the tubing removed, the lower portion of the coupler remaining in the well with the gravel pack and providing a receptacle for a packing element partially inserted therethrough.

Abstract: A game apparatus comprising a playing surface with a plurality of playing members on the surface. A ball member is adapted to move over the playing surface among the playing members with a magnetic element within the ball member. A rotatable surface located below the playing surface carries a plurality of second magnetic elements which exert magnetic forces on the magnetic element within the ball. The movement of the rotatable surface randomly positions the ball member on the playing surface and among the playing members.