Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 5543387 | Surfactant additive for oilfield acidizing Subterranean oil-bearing formations are treated with aqueous acid solutions which include an effective amount of an alkoxylated alkyl substituted phenol sulfonate which exhibits both antisludge and demulsification properties.... | 08/06/1996 |
| 4837752 | Method for establishing a common bandwidth for processing seismic data obtained from different sources, recording equipment and surveys A common bandwidth determination method for two disparate seismic datasets includes developing a weighted average of first least-squares filters assuming the data from the first dataset is the input and the data from the second dataset is the desired outp... | 06/06/1989 |
| 4715021 | Method for filtering and combining seismic data having different spectral characteristics A method of filtering and combining seismic data, such as data from two or more seismic sources having different spectral characteristics. A plurality of seismic signals are transmitted into a subterranean earth formation and a resulting data trace for ea... | 12/22/1987 |
| 4685091 | Method and apparatus for acoustic well logging Method and apparatus for acoustic wave generation and transmission into a subsurface earth formation. A logging sonde adapted to be suspended in a borehole within the formation houses a generator means for simultaneously generating a plurality of acoustic... | 08/04/1987 |
| 4677930 | Apparatus for quick-release of a storage vessel from a riser An apparatus is described for securing two offshore mooring sections together. The apparatus is a connector adapted to quickly disengage each mooring section so that an offshore floating storage vessel, having one mooring section attached to it, may be se... | 07/07/1987 |
| 4675604 | Computerized and motorized electromagnetic flux leakage internal diameter tubular inspection device A device for detecting defects in the bore of a tubular member. The device includes an inspection head including an electromagnet for magnetizing the internal surface of a tubular member. The device also includes a sensor or sensors to detect magnetic flu... | 06/23/1987 |
| 4671357 | Method of cementing a casing in a borehole A method for cementing a casing into a borehole. The borehole is drilled to the desired depth in the usual manner. Before removing the drill string and without substantially interrupting the flow of fluids in the borehole, the mud therein is displaced wit... | 06/09/1987 |
| 4672588 | Method for displaying acoustic well logging data by producing travel time stacks A method for producing a display of acoustic signals received during full waveform acoustic well logging. In a preferred embodiment, the signals received at the individual receiver (or receivers) of the logging tool are stacked along lines of constant aco... | 06/09/1987 |
| 4660647 | Fluid control line switching methods and apparatus Method and apparatus for altering the downhole flow path of control fluids or the like in oil and gas wells. A downhole side pocket mandrel in a tubing string has interconnected thereto a supply conduit from the surface and a plurality of receiving condui... | 04/28/1987 |
| 4661017 | Method and apparatus for aligning underwater components A method and apparatus for aligning a component with an underwater receptacle is disclosed. The component is attached to one end of a swing arm having a hook attached to the other end. The swing arm is lowered in the water until the hook engages a pivot a... | 04/28/1987 |
| 4657116 | Vibration-isolating apparatus A vibration-isolating apparatus for protecting equipment from excessive vibrations. The apparatus discloses an equipment-carrying frame attached by shock-absorbing members to a guide member. The guide member is loosely fastened in operational relationship... | 04/14/1987 |
| 4658387 | Shallow water seismic energy source An apparatus and method for generating a shock wave in water comprising a housing capable of containing compressed gas, attachment means fastened to the housing by which the apparatus is oriented in a selected positioned and exhaust means in the housing p... | 04/14/1987 |
| 4656944 | Select fire well perforator system and method of operation A well perforator system and method employs an electromagnetic wave frequency receiver, one for each of at least two gun intervals, that receives a transmitted signal conveyed through well tubing from the earth's surface. The signal is converted to an ele... | 04/14/1987 |
| 4655641 | Apparatus for aligning a platform deck and jacket The present invention provides an apparatus for aligning an integrated deck carried on a barge with a jacket secured to the seafloor. The apparatus comprises a plurality of cantilevered springs extending vertically downward from the deck and a plurality o... | 04/07/1987 |
| 4655300 | Method and apparatus for detecting wear of a rotatable bit The present invention relates to a method and apparatus for detecting excessive wear of a rotatable bit used in drilling. In particular, the apparatus can detect loss of gauge or bearing failure in a bit. The method is accomplished by connecting a restric... | 04/07/1987 |
| 4651818 | Metal seal tubing plug A plug is disclosed for sealing off in a tubing having a sealing surface. A housing contains an annular metal seal means and two sets of segmented expanding lockdown rings that react with three solid rings to provide a downward motion. The expanding lockd... | 03/24/1987 |
| 4649529 | Multi-channel fiber optic sensor system A time division multiplexing, fiber optic data gathering system, including two or more sensors formed on an optical fiber, and a phase sensitive detector. Each sensor includes two reflectors separated by a section of the fiber having length L. Each reflec... | 03/10/1987 |
| 4649526 | Method and apparatus for multipole acoustic wave borehole logging The inventive multipole acoustic wave logging method includes the steps of introducing a 2n -pole acoustic wave into a virgin earth formation surrounding a borehole but separated from the borehole by an invaded zone, where n is an integer great... | 03/10/1987 |
| 4648751 | Method and apparatus for erecting offshore platforms A method is disclosed for installing an integrated deck on a platform substructure located in a body of water. The deck is supported on jack-up means which, in turn, are mounted on a rigid pontoon raft having a U-shaped configuration. The jack-up means is... | 03/10/1987 |
| 4648479 | Multiple-port, multiple-chamber, tuned air-powered subsea seismic source The invention is a multi-port, multi-chamber, tuned, air-powered subsea seismic source. It is suitable for producing a seismic wave in a subsea environment during seismic prospecting. Interconnected pressurized chambers are formed between plates located o... | 03/10/1987 |
| 4648456 | Method for acidizing siliceous formations A method for improving the permeability in a subterranean formation by acid treatment is disclosed. In this method, an aqueous acidizing solution containing hydrofluoric acid and excess fluoride is injected into the formation. The acidizing solution disso... | 03/10/1987 |
| 4648453 | Process for remedial cementing An improved method is disclosed for remedial cementing operations. Prior to conducting the remedial cementing operation, the zone to be cemented is pretreated with a hydrocarbon solvent capable of dissolving hydrocarbons, such as oils and asphaltenes. Fol... | 03/10/1987 |
| 4648261 | Method for determining physical properties of a porous sample using capillary pressure measurement A method for determining pore-dependent properties, such as electrical conductivity and absolute permeability, of a porous sample by use of capillary pressure measurements. Capillary pressure data are obtained by performing nonwetting fluid intrusion meas... | 03/10/1987 |
| 4648752 | Marine template retaining wall and method of construction A template retaining wall for use in marine environments is composed of a plurality of interconnected, piled, prefabricated templates. Each template comprises a series of vertically extending, horizontally spaced apart legs and a series of battered, horiz... | 03/10/1987 |
| 4646839 | Method and apparatus for through-the-flowline gravel packing Methods of gravel packing a subterranean well located subsea utilizing through-the-flowline techniques are disclosed in which a sand slurry is pumped downwardly through one pipe of a dual pipe string and outwardly through an H-type crossover member (14, 1... | 03/03/1987 |
| 4637637 | Pipeline system with encapsulated insulation A pipeline system which is capable of withstanding a range of extreme temperatures is disclosed. A pipe is surrounded by a vapor barrier which has a corrugated surface facing the pipe. The amplitude of the corrugations changes, absorbing the stress impose... | 01/20/1987 |
| 4633970 | Distributed marine seismic source The invention relates to a compact tunable subsea seismic source. The source has multiple seismic radiating plates placed symmetrically about a central housing which contains a hydraulic actuating system. The source is towed to optimize the amount of ener... | 01/06/1987 |
| 4630970 | Buoyancy system for submerged structural member A buoyancy system for a tension leg platform tether 10 or other element extending a significant vertical distance through a body of water. A series of bulkheads 25 divide the interior of the tether 10 into individual buoyancy cells 31. A central access tu... | 12/23/1986 |
| 4628468 | Method and means for determining physical properties from measurements of microstructure in porous media A method and apparatus for predicting pore-dependent physical properties of a microporous solid from measurements of the geometric statistical characteristics of the solid. In a preferred embodiment, the method involves a microscopic determination of the ... | 12/09/1986 |
| 4626237 | Method and apparatus for separating the components of a wellstream The present invention is a centrifuge method and apparatus for separating the components of a stream, particularly a wellstream. Centrifugal force is used to separate solid and liquid components from gaseous components, and the combined action of centrifu... | 12/02/1986 |
| 4626773 | Method and means for determining rock properties using time-domain dielectric spectroscopy A method and system for measuring rock electrical properties using time-domain spectroscopy. The rock to be measured is place in direct contact with the substantially flat face of a sample cell. A voltage pulse is launched into a coaxial line connected to... | 12/02/1986 |
| 4626136 | Pressure balanced buoyant tether for subsea use A pressure balanced tether buoyancy system 12 useful for reducing the load imposed on a tension leg offshore platform 24 by the tethers 10 securing it to the ocean bottom. The tether 10 has tubular tether walls 11 defining a central cavity 15 isolated fro... | 12/02/1986 |
| 4625302 | Acoustic lens for marine seismic data multiple reflection noise reduction An improved method and apparatus for gathering seismic data in a region covered by a body of water. Gas bubbles are formed in a zone of water adjacent a streamer containing hydrophones to form an acoustic lens for refracting acoustic waves which have refl... | 11/25/1986 |
| 4623022 | Well sand packing prevention method A method for producing hydrocarbons from a subterranean formation which reduces sand packing in a producing well completed in a zone adjacent the hydrocarbon-bearing formation. The method includes the steps of producing a fluid from the formation which co... | 11/18/1986 |
| 4619323 | Method for conducting workover operations Apparatus for use in conducting well workover operations includes a coiled non-electrically conductive matrix shaped into a string and containing at least one conduit capable of conducting fluids and electrical conductor means capable of transmitting elec... | 10/28/1986 |
| 4616706 | Apparatus for performing subsea through-the-flowline operations An apparatus and method is described for introducing and removing TFL tools from a subsea wellhead assembly. The apparatus includes an elongate member adapted to hold at least one TFL tool, docking hubs for aligning the elongate member with the wellhead, ... | 10/14/1986 |
| 4617518 | Method and apparatus for offshore electromagnetic sounding utilizing wavelength effects to determine optimum source and detector positions An improved method and apparatus for electromagnetic surveying of a subterranean earth formation beneath a body of water. An electric dipole current source is towed from a survey vessel in a body of water substantially parallel to the surface of the body ... | 10/14/1986 |
| 4615387 | Annular gas trap Well apparatus for use in injecting corrosion inhibitor into the annulus between casing and tubing strings below an injection/packer assembly positioned in such annulus which includes an annular gas trap positioned below the injection/packer assembly. The... | 10/07/1986 |
| 4612989 | Combined replacement drive process for oil recovery Performing steam drive operations in critical manipulative steps can improve the recovery of viscous hydrocarbons from tar sand deposits. Steam is injected into an injection well at a rate that is less than the rate needed to fracture the formation, and f... | 09/23/1986 |
| 4611685 | Acoustic logging in low velocity formations Acoustic logging of low velocity formations is made possible by the introduction of gas bubbles in the liquid in a borehole where logging equipment is present. Acoustic logging cannot be performed where the compressional wave velocity in the borehole liqu... | 09/16/1986 |
