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| Number | Title | Issue Date |
| 5219028 | Well casing and well casing method The present invention provides a preperforated casing for a well bore and a method of installing a preperforated casing in a well bore. The inventive casing comprises (a) a conduit having a plurality of apertures extending through the wall thereof and (b)... | 06/15/1993 |
| 5181537 | Outlet collectors that are rate insensitive A fluid handling system comprises a vessel having an interior, an outlet collector disposed in the vessel having a plurality of flow tubes disposed through its bottom, the flow tubes all having substantially identical lengths and substantially identical d... | 01/26/1993 |
| 5150987 | Method for installing riser/tendon for heave-restrained platform A Heave-Restrained Platform and Drilling System (HRP/DS) comprises a floating structure having a central buoyance means, at least three out-rigger columns, and a hybrid mooring system in which a spread (lateral) mooring system functions with an array of t... | 09/29/1992 |
| 5147148 | Heave-restrained platform and drilling system A Heave-Restrained Platform and Drilling System (HRP/DS) comprises a floating structure having a central buoyancy means, at least three out-rigger columns, and a hybrid mooring system in which a spread (lateral) mooring system functions with an array of t... | 09/15/1992 |
| 5135327 | Sluice method to take TLP to heave-restrained mode A tension leg platform which can be a heave restrained platform and drilling system (HRP/DS) is taken to the heave restrained mode by rapidly sluicing ballast by gravitational force from a reservoir above the water line. More specifically, a tension leg p... | 08/04/1992 |
| 5092713 | High axial load termination for TLP tendons A composite tubular tendon containing axial fibers and helical fibers laid on an inner liner is connected to a circular opening in a hollow termination body having an opposite curved end which is connected with an elongated member smaller than the termina... | 03/03/1992 |
| 5046896 | Inflatable buoyant near surface riser disconnect system A riser system includes inflatable buoyancy bladders and a near surface disconnect so that a drilling vessel can rapidly disconnect from the riser leaving the riser in a freestanding buoyant position.... | 09/10/1991 |
| 5042600 | Drill pipe with helical ridge for drilling highly angulated wells The drilling of highly angulated wellbores (with a rotary rig having a drill string terminated with a bit wherein drilling fluid is employed) is improved by employing in the highly angulated drill string a length of drill pipe which has a helical ridge di... | 08/27/1991 |
| 5039255 | Termination for kinkable rope A Kevlar.RTM. rope termination in which the rope is passed through an opening in a tension leg termination, is divided and laid over a rigid pin, being sealed around the pin with a resin. A flexible bearing member is located between the rope covered pin a... | 08/13/1991 |
| 5027666 | Compact counter balanced pump jack A compact well jack is particularly suitable for reciprocating a long stroke rod pump and in situations wherein horizontal area around the well head is limited. The pump jack has a frame with elongated guides, a lifting bar slidably disposed between the g... | 07/02/1991 |
| 5005655 | Partially halogenated ethane solvent removal of oleophylic materials from mineral particles 1,1-dichloro-2,2,2-trifluoroethane or 1,1-dichloro-1-fluoroethane are employed as solvents to remove oleophylic material from mineral particulates. In one aspect the method of this invention includes the steps of transporting oil-based mud-laden cuttings ... | 04/09/1991 |
| 4981175 | Recirculating gas separator for electric submersible pumps A recirculating gas separator for a submersible well pump includes a rotary gas separator for separating liquid to be directed to the pump from a gas. The separator includes a separating chamber, a well fluid inlet upstream of the separating chamber, and ... | 01/01/1991 |
| 4943370 | Method and apparatus for monitoring material in a liquid An apparatus and method for monitoring the presence in a liquid of a material which is at lest partially immiscible in the liquid are disclosed. The apparatus includes a container and an overflow outlet for allowing a surface layer of the liquid to flow o... | 07/24/1990 |
| 4733725 | Single well test for evaluating CO2 injection A test is provided for evaluating and/or designing an enhanced oil recovery process including CO2 injection. A modified log-inject-log technique is utilized to determine residual CO2 saturation and incremental hydrocarbon displacemen... | 03/29/1988 |
| 4710305 | Processes and oxidizing agents for oxidizing sulfide ion to innocuous, soluble sulfur species Processes and oxidizing agents for oxidizing sulfide ion found in sour water to innocuous, soluble sulfur species are provided. The processes basically comprise contacting the sour water with a nitrogen halogenated triazine or a nitrogen halogenated deriv... | 12/01/1987 |
| 4687058 | Solvent enhanced fracture-assisted steamflood process The addition of vaporized solvent to injected steam in a fracture-assisted steamflood process provides surprisingly significant enhancement of the process as compared to both the basic fracture-assisted steamflood process of the Britton et al. U.S. Pat. N... | 08/18/1987 |
| 4687057 | Determining steam distribution An enhanced oil recovery method utilizes a monitored salinity concentration decline in produced water at the various producing wells of a steam flood project to determine actual steam distribution. This actual steam distribution is utilized to determine a... | 08/18/1987 |
| 4678147 | Clamps for attaching pipelines together in parallel relationship A line (such as a pipeline) of smaller diameter is mounted on a line of larger diameter with a clamp comprising a saddle for positioning on the larger line, a channel formed in the outer face of the saddle for receiving the smaller line, a closure member ... | 07/07/1987 |
| 4662440 | Methods for obtaining well-to-well flow communication A process for establishing well-to-well flow communication between a plurality of wells penetrating a subsurface formation is provided. A common fracture network is created by initiating a fracture from a first well, and then propagating that fracture fro... | 05/05/1987 |
| 4641709 | Controlling steam distribution An enhanced oil recovery technique includes the predetermination of a desired steam distribution within a steam flood pattern, which preferably is proportional to the volumes of oil in place within various sectors of an area of a subsurface formation. The... | 02/10/1987 |
| 4610301 | Infill drilling pattern A method is provided for modifying an original distribution pattern including an original central injection well and four original corner production wells. One or more new injection wells are provided at locations approximately aligned midway between adja... | 09/09/1986 |
| 4593764 | Removal of pipe dope constrictions Pipe dope restricting fluid communication between a well bore and a subterranean formation is contacted with a liquid perhaloalkane having no more than three carbon atoms per molecule, such as 1,1,2-trichloro-1,2,2-trifluoroethane, to improve fluid commun... | 06/10/1986 |
| 4589490 | Well bore recompletion Well bores employed for production of hydrocarbons having open hole completion and zonal breakdown in the locus of the well bore are recompleted, advantageously for injection of a fluid such as CO2 in an enhanced oil recovery process. Recomplet... | 05/20/1986 |
| 4503149 | Method of microbial assay A process for detecting the population count of microorganisms in an aqueous medium by means of ultraviolet spectrophotometry. The specimen is first filtered and the resulting filtrate then centrifuged to concentrate the microbial cells in a pellet layer.... | 03/05/1985 |
| 4495997 | Well completion system and process Well completion system providing for an enhanced bond between a well casing and the surrounding cement sheath. The system comprises a casing string disposed within a well extending to a subterranean location within the earth's crust. A metal ribbon is dis... | 01/29/1985 |
| 4493372 | Well completion system and process Well completion system providing for an enhanced bond between a well casing and the surrounding cement sheath. The system comprises a string of casing disposed within a well extending to a subterranean location in the earth. A wrapping of a metal wire is ... | 01/15/1985 |
| 4451177 | Guideline system for positioning subsea equipment A guideline system for positioning subsea equipment utilizes splayed guidelines for exerting lateral forces on the subsea equipment as it is lowered into place.... | 05/29/1984 |
| 4448062 | Method and apparatus for erosion detection and location in hydrocarbon production systems and the like Acoustic emissions are detected so that the amount of wear on the interior of a conduit can be directly determined. The acoustic emissions arise from plastic deformations and fractures caused by the fluid and particulate substances therein flowing through... | 05/15/1984 |
| 4444260 | Oil solvation process for the treatment of oil contaminated sand A method for the treatment of oil well production streams to process oil-contaminated sand to recover oil therefrom and produce an ecologically acceptable clean sand residue. The process involves separating the production fluid from an oil well having san... | 04/24/1984 |
| 4440231 | Downhole pump with safety valve Apparatus and methods are provided for installing and removing a downhole rod pump form a well while preventing flow of fluids from the well through a production tubing string.... | 04/03/1984 |
| 4433582 | Damping device for use with acoustic information generation machines A damping device for use with acoustic information generation machines for isolating a generation portion of the generation device from contamination by extraneous acoustic emissions. A metal isolation piece consisting of a shape-memory alloy is disposed ... | 02/28/1984 |
| 4424864 | Isolation plug Apparatus and methods are provided for isolating a zone of a well bore from a portion of the well bore located above the zone, to prevent communication between the zone and the portion of the well bore located thereabove.... | 01/10/1984 |
| 4425056 | Tension control system for controlling the tension in platform supporting tension legs. The present invention provides methods and apparatus for tension compensation in the tension legs used to moor a floating platform to the sea floor. The apparatus includes one or more hydraulic jacks, each having a cylinder coupled through a load block to... | 01/10/1984 |
| 4425239 | Method and apparatus for oil-water separation A system for separating a multi-component fluid such as a water-in-oil emulsion into at least two components. The system comprises a cylindrical vessel which is equipped with a baffle system interposed between fluid inlet and outlet means. The baffle syst... | 01/10/1984 |
| 4418755 | Methods of inhibiting the flow of water in subterranean formations Methods of inhibiting the flow of water into and from subterranean well formations wherein one or more gelling agents having the property of forming highly viscous gels in the presence of water are injected into the formation.... | 12/06/1983 |
| 4417624 | Method and apparatus for controlling the flow of fluids from an open well bore A method and apparatus for controlling the flow of fluids from an open well bore, fluidly communicating the surface and a subterranean formation, the apparatus comprising (a) a slideable base; (b) a support positioned on the base; (c) a pipe engaging device po... | 11/29/1983 |
| 4412586 | Methods of inhibiting the flow of water in subterranean formations Methods of inhibiting the flow of water into and from subterranean well formations wherein one or more gelling agents having the property of forming highly viscous gels in the presence of water are injected into the formation.... | 11/01/1983 |
| 4409825 | Down hole steam quality measurement A system is provided for determining quality, pressure, temperature and enthalpy of wet steam at a predetermined depth within a well through which the wet steam flows.... | 10/18/1983 |
| 4409824 | Fatigue gauge for drill pipe string Strain gauges are attached to a drill pipe which is inserted into a drill pipe string to be used in a well. The strain gauges are connected to an electrical circuit containing devices for digitizing the electrical signals generated by the strain gauges in... | 10/18/1983 |
| 4390066 | Well location pattern for secondary and tertiary recovery A method of producing hydrocarbons from a subterranean formation comprising penetrating the formation with a plurality of wells arranged in a pattern defining a series of regular pentagons with a well at the center of each pentagon, injecting a fluid into... | 06/28/1983 |
