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 |
| 4457375 | Foam generating device for wells A foam generating apparatus (10) is provided for circulation of foam within a well (12) for drilling, operation or clean out. A liquid foam generating solution (38) is pressurized by a pump (48). The solution flows through a passage in a mixing tee (66). ... | 07/03/1984 |
| 4449594 | Method for obtaining pressurized core samples from underpressurized reservoirs The invention provides a method for obtaining a balanced, pressurized core sample from an underpressurized geological reservoir formation. A pressure core sampling well is drilled to a preselected depth and the bottom hole reservoir pressure therein is de... | 05/22/1984 |
| 4425243 | Foaming agents for use in drilling for oil and gas Foaming agents for use in oil and gas production comprising n-octyl dimethylamine oxide, n-decyl dimethylamine oxide, branched decyl dimethylamine oxide, and mixtures thereof, all of which generate copious quantities of stable foam even in the presence of... | 01/10/1984 |
| 4415046 | Deep vibrator apparatus and method of use A deep vibrator includes a propulsion head (1) vibrating in a transverse direction with respect to the longitudinal axis of a suspension tube propulsion head being secured to the lower end of a suspension tube (2) while the outer wall of the suspension tu... | 11/15/1983 |
| 4394880 | Method of preventing drill string overflow A method of preventing drilling fluid overflow when adding or removing drill pipe sections to or from a drill string disposed in a well bore comprising the steps of introducing a gas into the drill string until a predetermined volume thereof is introduced... | 07/26/1983 |
| 4366074 | Oil well treating method and composition A particular simple method and class of organic polycationic polymer compositions are provided for treating earthen formations such as in oil wells to stabilize clay against dispersion and expansion due to water.... | 12/28/1982 |
| 4351400 | Method of preventing drill string overflow A method of preventing drilling fluid overflow when adding or removing drill pipe sections to or from a drill string disposed in a well bore comprising the steps of introducing gasified drilling fluid into the drill string until a predetermined volume the... | 09/28/1982 |
| 4319784 | Apparatus for water jet and impact drilling and mining The invention is a novel method and apparatus for subterranean drilling and mining, particularly suited to alluvial deposits. The method uses water jets from the lower end of the apparatus to loosen and remove soil. Part of the water is bled off to raise ... | 03/16/1982 |
| 4304309 | Surface drilling apparatus A surface drilling apparatus for drilling large diameter holes in soft to medium-hard earth formations includes a cylindrical casing defined by a stationary upper section and a lower section rotatable relative to the upper section; a plurality of circular... | 12/08/1981 |
| 4245672 | Sealing valve for sludge scavenging system A drilling rig comprising a plurality of pipes connected in a row, with a drill at the lower end; the rotation transmitting bar or Kelly bar at the top end of the drilling rig must be periodically disconnected so as to install a new pipe section; the inve... | 01/20/1981 |
| 4187911 | Slant hole foam cleanout A method for removing material from directional wells using centralized tubing to circulate foam in the well at a velocity in excess of 30 feet per minute.... | 02/12/1980 |
| 4155410 | Method for correcting lost circulation Lost circulation in a well occurring during drilling is reduced by aeration of clay-free, non-thixotropic, brine wellbore fluids comprising hydroxyalkyl cellulose and preferably magnesia as a stabilizer. The gas is easily and completely removed from the f... | 05/22/1979 |
| 4136747 | Method and means for reduction of oxygen content in drilling fluid A method and means for using nitrogen exhaust gases or gaseous mixtures of combustible products for reduction of oxygen in drilling fluids during the drilling of well bores and which comprises utilizing nitrogen from normally waste exhaust gases or the li... | 01/30/1979 |
| 4121674 | Method for foam drilling using a biodegradable foaming agent A method for conducting foam drilling and workover operations in a bore hole penetrating a subterranean reservoir employing an aqueous solution of a biodegradable foaming agent composition containing about 0.3 to 3 parts by weight of an N-fatty ethyl sulf... | 10/24/1978 |
| 4121664 | Biodegradable foaming agent in drilling and workover operations A method for conducting foam drilling and workover oprations in a bore hole penetrating a subterranean reservoir employing an aqueous solution of a biodegradable foaming agent composition containing about 0.1 to 1 part by weight of an N-fatty ethyl sulfat... | 10/24/1978 |
| 4100981 | Earth boring apparatus for geological drilling and coring Apparatus for concentric multi-string drilling with reverse air vacuum for the entrainment of chips and dust, selectively controlled through a plurality of annuli defined by the multiplicity of drill strings adapted to individually and/or cooperatively op... | 07/18/1978 |
| 4099583 | Gas lift system for marine drilling riser An improved offshore drilling method and apparatus are disclosed which are useful in preventing formation fracture caused by excessive hydrostatic pressure in a drilling riser. Gas is injected into the riser to provide the lift necessary to return the dri... | 07/11/1978 |
| 4092252 | Controlling corrosion in gas-containing aqueous drilling fluid A composition and method for drilling wells through subterranean strata containing high temperature aqueous fluids using a gas-containing aqueous drilling fluid containing an alkaline material to raise the pH of the drilling fluid to provide corrosion pro... | 05/30/1978 |
| 4088583 | Composition and method for drilling high temperature reservoirs Composition and method for drilling a well into a high temperature subterranean reservoir, such as one containing a geothermal fluid, wherein there is used an aqueous foam drilling fluid containing (1) water, (2) gas, (3) a foaming agent, (4) an erosion a... | 05/09/1978 |
| 4071100 | Method of making holes of selected external configuration in preferably rock or ground formation, and a drilling machine for carrying out the method In a method of making holes of selective external configuration in a rock or earth formation, two or more rotatable drills provided with drill crowns are driven into the ground. The drill crowns are so arranged that they will touch each other or are radia... | 01/31/1978 |
| 4045084 | In-situ mining of copper and nickel A process is disclosed for in-situ mining of copper from a subterranean ore body characterized, at least in part, by the presence of a sulfidic ore and by natural, microscopic fracture openings. The process comprises forcing a stable, two-phase lixiviant ... | 08/30/1977 |
| 4039459 | Composition and method for drilling a reservoir containing a high temperature aqueous liquid A composition and method for drilling a well into a subterranean reservoir containing a high temperature aqueous liquid which composition contains as a scale inhibitor (i) a water-soluble substituted iminodi(methylene phosphonic acid) compound having a ca... | 08/02/1977 |
| 4036764 | Method of foam drilling using a sulfoacetate foaming agent A method of conducting foam drilling and workover operations in a bore hole penetrating a subterranean formation, particularly a high-temperature formation such as a geothermal formation, employing an aqueous solution of a foaming agent having the formula... | 07/19/1977 |
| 4013568 | Composition and method for drilling formations containing geothermal fluid A composition and method for drilling a well into a subterranean formation containing a geothermal fluid utilizing a gas-containing aqueous drilling fluid containing both lignite and a salt of a high molecular weight acrylic polymer.... | 03/22/1977 |
| 3995705 | Method of foam drilling using a di-substituted taurate foaming agent A method of conducting foam drilling and workover operations in a bore hole penetrating a subterranean formation, particularly a high-temperature formation such as a geothermal formation, employing an aqueous solution of a N-acyl-N-methyltaurate foaming a... | 12/07/1976 |
| 3953338 | Foam well cleanout using oligomeric sulfonic acids Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110°C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures... | 04/27/1976 |
| 3951823 | Foam well cleanout using oligomeric sulfonates Organic disulfonic acids are produced by heating a sulfonate monomer at a temperature above 110°C. in the substantial absence of water. Olefin sulfonation product mixtures, hydroxyalkane sulfonic acids, alkane sultones, alkene sulfonic acids and mixtures... | 04/20/1976 |
