Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 4950995 | Method of treating a well bore in connection with electric logging of subsurface formation A method of preventing flow of formation fluid and crude oil into a well bore during an electric resistivity logging operation. A readily flowable liquid gellation composition containing a breaker is of contrasting resistivity to that of the formation wat... | 08/21/1990 |
| 4947675 | Unidirectional pipe line prover A unidirectional pipe line flowmeter prover. Two calibrating spheres are used in connection with two support surfaces in the interchange conduit. Each support surface comprises a flexible liner mounted adjacent the interior of the interchange conduit so t... | 08/14/1990 |
| 4849182 | Apparatus and method for the continuous production of aqueous polymer solutions Apparatus and method for the continuous preparation of dilute solutions of water soluble polymers, and especially to a closed, on-site arrangement for the continuous production of partially hydrolyzed polyacrylamide solutions for use in the secondary and ... | 07/18/1989 |
| 4846215 | Back pressure regulator A back pressure regulator of the diaphragm type. A metal diaphragm is held in a cavity formed by opposed faces of top and bottom portions of the unit. The opposed faces are tapered so that the depth of the cavity is greatest in the central portion of the ... | 07/11/1989 |
| 4846280 | Drill stem test method and apparatus Means for lifting formation fluid to the surface in a drill stem test. The drill string has first openings allowing entry of formation fluid and upwardly spaced second openings which are normally closed by a sleeve slidably mounted on the drill string. Fl... | 07/11/1989 |
| 4844169 | Nitrogen stimulation of a potassium hydroxide wellbore treatment Clays in water sensitive subterranean formations are stabilized by injecting a sufficient amount of an unreactive gas, preferably nitrogen, into the formation to substantially fluidize the clays, including migratable fine particles, enabling their removal... | 07/04/1989 |
| 4621522 | Method of determining the minimum level of gas enrichment for a miscible flood A method of determining the minimum level of enrichment required to render a substantially immiscible gas miscible in a liquid hydrocarbon by observing the behavior of enriched gas bubbles having incrementally increasing levels of enrichment as they rise ... | 11/11/1986 |
| 4560517 | Sulfonation of crude oils with gaseous SO3 to produce petroleum sulfonates Petroleum sulfonates are obtained by continuously contacting whole crude oil or topped crude oil with gaseous sulfur trioxide (contains as a diluent sulfur dioxide and light hydrocarbon vapor) in a reaction zone operated at a temperature of 120°-250° F.... | 12/24/1985 |
| 4558437 | Seafloor velocity and amplitude measurement apparatus and method therefor The invention provides an improved method and apparatus (10) for measuring the velocity and amplitude of sound waves (150) from acoustic pulses (145) generated near the mudline (130) of the seafloor (120). The apparatus (10) includes a seismic source (30)... | 12/10/1985 |
| 4553594 | Flow control method Apparatus, and method, for controlling the flow of dilute solutions of polymers such as dilute aqueous solutions of partially hydrolyzed polyacrylamides without causing any significant degradation of the polymer comprising the solutions. In one embodiment... | 11/19/1985 |
| 4515212 | Internal casing wiper for an oil field well bore hole The invention provides for an improved internal casing wiper tool 10 designed to wipe the casing sides 10 of a well bore hole 30 in order to remove debris 60 contained thereon and further to remove debris 60 contained in fluid found in the bore hole 30. T... | 05/07/1985 |
| 4516227 | Subocean bottom explosive seismic system The invention provides a system having at least one subocean bottom seismic device, such as a seismic source (10) or a seismic detector (600), and a planting unit (300). When the planting unit (300) is lowered it selectively implants the seismic device at... | 05/07/1985 |
| 4512883 | Skimmer for floating roof tanks The invention provides for a skimmer (10) interconnected to the floating roof (30) of a floating roof tank (300) wherein a mixture of at least two immiscible liquids, including a lowest specific gravity liquid (50) and at least one higher specific gravity... | 04/23/1985 |
| 4510993 | Flow control apparatus and method Apparatus, and method, for controlling the flow of dilute solutions of polymers such as dilute aqueous solutions of partially hydrolyzed polyacrylamides without causing any significant degradation of the polymer comprising the solutions. In one embodiment... | 04/16/1985 |
| 4510397 | Polymer flow control apparatus Flow control of diluted polymer solutions is effected by utilizing positive-displacement flow devices such as gear pumps to withdraw flow energy in the form of shaft work. Control is obtained by varying the nature and amount of shaft work withdrawn, such ... | 04/09/1985 |
| 4509967 | Process for devolatilizing natural gas liquids A natural gas liquid which has been cryogenically extracted from a natural gas feed is devolatilized by removing a portion of the ethane from the liquid. The natural gas feed stream is initially split into two streams, the smaller part of the stream being... | 04/09/1985 |
| 4508858 | Apparatus and method for preparing polymer solutions Apparatus and method for the on-site, continuous preparation of aqueous solutions of polymers, especially aqueous solutions of partially hydrolyzed polyacrylamides, for use in secondary and tertiary oil recovery operations. The apparatus comprises a polym... | 04/02/1985 |
| 4503909 | Oil recovery process and system An on-site, in-line process and system for recovering oil from oil-bearing subterranean formations which involves the production, modification, dilution and injection of a polymer solution, preferably consisting essentially of an aqueous solution of a par... | 03/12/1985 |
| 4482704 | Method and apparatus for multiple recycle polymer dilution A method and apparatus for the continuous processing of polymers and, more particularly, a method and apparatus for the continuous dilution of solutions of long-chain polymers by successive or multiple recycling without degrading of the polymers.... | 11/13/1984 |
| 4474509 | Method of erecting a marine structure utilizing a removable watertight plug assembly A method of erecting a marine structure at an offshore site of a body of water. The structure has a plurality of hollow tubular members associated with it. Examples of such members include skirt piles, conductors, legs, etc. The bottom portion of at least... | 10/02/1984 |
| 4456067 | Process for inhibiting hydrate formation in producing gas wells Microcapsules containing a gas hydrate inhibitor, such as a glycol, are suspended in a carrier fluid and injected directly into a gas-bearing formation via a producing well. The microcapsules release the hydrate inhibitor in situ at varying rates to provi... | 06/26/1984 |
| 4439345 | Demulsification of a crude oil middle phase emulsion The middle phase emulsion of a crude oil emulsion produced by a surfactant flooding of an oil reservoir is demulsified by contacting it with a water-soluble alkali metal hydroxide in an amount and under conditions sufficient to cause the hydrolysis of the... | 03/27/1984 |
| 4433729 | Process for selectively reducing the fluid injection rate or production rate of a well A process for improving areal conformance of fluids injected into or produced from a subterranean formation via a multiwell system wherein significantly greater amounts of fluid than desired are injected into or produced from at least one well of the mult... | 02/28/1984 |
| 4433727 | Oil recovery process An on-site, in-line process and system for recovering oil from oil-bearing subterranean formations which involves the production, modification, dilution and injection of a polymer solution, preferably consisting essentially of an aqueous solution of a par... | 02/28/1984 |
| 4433728 | Process for selectively reducing the fluid injection rate or production rate of a well A process for improving areal conformance of fluids injected into or produced from a subterranean formation via a multiwell system wherein significantly greater amounts of fluid than desired are injected into or produced from at least one well of the mult... | 02/28/1984 |
| 4430728 | Computer terminal security system The invention provides a system for securing the access of a remote computer terminal (130) to a centrally located host computer (300). The system includes a first security circuit (200) interconnected with a calling telephone (100), a calling modem (110)... | 02/07/1984 |
| 4429742 | Tubular alignment assembly Hollow tubular members used as piling to support offshore platforms and the like are more easily aligned with a stabbing means. The base of the stabbing means is flexibly attached to the inner surface of one end of a tubular member; the tip of the stabbin... | 02/07/1984 |
| 4424021 | Method for retorting carbonaceous particles In this process carbonaceous materials in a wide range of particles size are heat treated in a substantially vertical gravity retort through which heated gasses flow upwardly. The particles are graded by size and fed into the retort with the largest parti... | 01/03/1984 |
| 4414119 | Injectivity of crude oil and petroleum sulfonate slugs by the addition of an alkylbenzene sulfonate Alkylbenzene sulfonate is added to a crude oil sulfonation product to prevent the formation of insoluble precipitates in the crude oil sulfonation product. The use of an alkylbenzene sulfonate as an additive to a microemulsion slug containing crude oil su... | 11/08/1983 |
| 4405036 | Seafloor velocity and amplitude measurement apparatus method The invention provides an apparatus (10) and method for measuring the velocity and amplitude of a pressure wave (310) from an acoustic pulse (300) through layers of sediment (140) located below the mudline (130) of the seafloor (120). The apparatus (10) i... | 09/20/1983 |
| 4404843 | Cryogenic storage tank leak detection system The invention provides a system for the detection of leaks in the primary barrier (150), the secondary barrier (130), and the inner hull (110) of the primary and secondary insulation spaces (140 and 120) of a cryogenic cargo tank (10) carrying liquified n... | 09/20/1983 |
| 4404110 | Ozonation of petroleum feedstocks A process for the sulfonation of a hydrocarbon feedstock, particularly one containing naphthenes, is improved by ozonating the hydrocarbon feedstock prior to sulfonation. The ozonation results in a greater conversion of the sulfur trioxide to sulfonate, a... | 09/13/1983 |
| 4402916 | Dilution apparatus and method Apparatus, and method, for diluting polymer solutions of a known concentration to a preselected lower concentration without any concomitant degradation or thinning of the polymer comprising the solution. The apparatus comprises an elongated chamber desira... | 09/06/1983 |
| 4397748 | Treatment of sanitary sewer systems A method of reducing the fluid flow friction loss of fluid waste materials in the conduits of sanitary sewer systems while at the same time maintaining the solid materials in the fluid in a flowable condition by introducing into a sewer system about 1 to ... | 08/09/1983 |
| 4396530 | Mineral acid demulsification of surfactant-containing emulsion Oil is recovered simultaneously from all phases of a surfactant-produced crude oil or simultaneously from the middle and upper phases of such an emulsion by acidizing the emulsion with a mineral acid, preferably nitric acid. Following the acidation step, ... | 08/02/1983 |
| 4390842 | Fluid conductivity device for measuring fluid volumes and method therefor The invention provides a device and method for measuring the volumes of oil (310) and water (320) in an oil and water mixture (300) wherein the mixture (300) flows at a constant volumetric flow rate. The device includes a formed cylindrical passageway (20... | 06/28/1983 |
| 4390836 | Method and apparatus for the detection of pipeline holidays A method and apparatus are provided for detecting and locating holidays in an insulating coating of a subterranean pipeline. An alternating current is induced in the portion of the pipeline being surveyed. The pipeline is tracked by sensing the normal ele... | 06/28/1983 |
| 4387770 | Process for selective injection into a subterranean formation A treating fluid is selectively injected into a portion of subterranean formation by creating a fluid interface within a well bore penetrating and communicating with the formation. The fluid interface is created by injecting preflush fluids of differing d... | 06/14/1983 |
| 4384977 | Polyalkyloxyamines as demulsifying agents A process for the demulsification of an emulsion comprising contacting the emulsion with a compound of the formula: wherein: R1 is selected from the group consisting of hydrogen, an alkyl, an aryl, an alkylaryl, a heterocyclic and N,N'diurea; --OA | 05/24/1983 |
| 4383930 | Mobility control agent Polymer mobility control agents useful in supplemental oil recovery processes, which give improved reciprocal relative mobilities, are prepared by initiating the polymerization of a monomer containing a vinyl group with a catalyst comprising a persulfate ... | 05/17/1983 |
