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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 6751558 | Method and process for prediction of subsurface fluid and rock pressures in the earth A method of determination of fluid pressures in a subsurface region of the earth uses seismic velocities and calibrations relating the seismic velocities to the effective stress on the subsurface sediments. The seismic velocities may be keyed to defined seismic hori... | 06/15/2004 |
| 6370491 | Method of modeling of faulting and fracturing in the earth A computer implemented method for modeling of faulting and fracturing uses "small scale rules" to produce large-scale results. One part of the method is a user interface for inputting deformations, preexisting faults and fractures, and material rock prope... | 04/09/2002 |
| 5283051 | Reactor vessel discharge An apparatus and method are provided for containing particulate material e.g.: spent catalyst when evacuating an industrial reactor vessel used in hydrocarbon processing. A containment bag (3) is provided one end of which is located adjacent the wall of t... | 02/01/1994 |
| 5092982 | Manufacture of isotropic coke Low sulfur isotropic coke is produced by the delayed coking of a mixture of a pyrolysis tar and a residual oil which has been solvent extracted to remove paraffinic components and then air-blown.... | 03/03/1992 |
| 5084617 | Fluorescence sensing apparatus for determining presence of native hydrocarbons from drilling mud A monitoring device for determining presence of native hydrocarbons downward along a drilled borehole by analyzing upcoming drilling mud returning to the reserve pit. The device includes a short pulse laser of selected output wavelength disposed at a remo... | 01/28/1992 |
| 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 |
| 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 |
| 4964103 | Three dimensional before stack depth migration of two dimensional or three dimensional seismic data The present invention provides a three dimensional before stack depth migration of two dimensional or three dimensional seismic data. Ray tracing is used to move before stack trace segments to their approximate three dimensional position. The trace segmen... | 10/16/1990 |
| 4924390 | Method for determination of earth stratum elastic parameters using seismic energy A method of processing seismic data involves the input of common depth point data for determination of obliquity of downward propagating energy. Data having known surface offset and travel time is then processed with interval velocities along the depth of... | 05/08/1990 |
| 4886520 | Oil compositions containing terpolymers of alkyl acrylates or methacrylates, an olefinically unsaturated homo or heterocyclic-nitrogen compound and allyl acrylates or methacrylates or perfluoroalkyl ethyl acrylates or methacrylates Oil compositions comprising crude oils, fuel oils, mineral oils and synthetic oils having high pour points are provided with one or more enhanced characteristics such as improved pour point, viscosity or viscosity index by the addition of a terpolymer com... | 12/12/1989 |
| 4883387 | Apparatus for tensioning a riser A tensioner system for a riser of a subsea production well. A plurality of at least three tensioners are each pivotally secured to both a lower surface of the production platform and to a tensioner ring that is itself secured to the riser. The tensioner r... | 11/28/1989 |
| 4781497 | Tension-restrained articulated platform tower A tension-restricted articulated platform tower for offshore oil and gas production. Two or more tower segments of increasing lateral dimension (proceeding toward the ocean floor) are stacked and articulated by means of a resilient joint. The platform tow... | 11/01/1988 |
| 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 |
| 4549934 | Flash zone draw tray for coker fractionator An internal draw tray is added to the flash zone of a coker fractionator below the coker vapor inlet to collect condensed coke drum overhead components and to keep the condensed material separate from the fresh feed to the coker furnace.... | 10/29/1985 |
| 4514282 | Hydrogen donor diluent cracking process Heavy hydrocarbonaceous oil is cracked by hydrogen donor diluent cracking, and pitch from the donor cracking step is recycled. The pitch is catalytically hydrotreated before it is recycled. Hydrotreating the pitch enables complete conversion of the 950° ... | 04/30/1985 |
| 4443638 | Preparation of alcohols from internal olefins A process for preparing alcohols from internal olefins is disclosed. Briefly, the process comprises (a) hydroformylation of internal olefins to aldehydes using a small amount of a ligand modified recycled rhodium catalyst, (b) separating the reaction prod... | 04/17/1984 |
| 4394577 | Displacement measurement device and method At least two types of reflective or emissive materials are applied in alternating manner to a pile or other object to be moved. Ultraviolet energy is emitted toward the materials and reflections or emissions therefrom are received by appropriate detector ... | 07/19/1983 |
| 4371455 | Supported catalyst for olefin polymerization A method for the preparation of supported Ziegler-Natta catalysts comprising the reduction of a transition metal compound with a magnesium containing reducing agent. The reducing agent is prepared in the presence of a magnesium chloride support utilizing ... | 02/01/1983 |
| 4369506 | Method and apparatus for shear wave logging Apparatus for shear wave logging of a fluid-filled borehole which consist of an elongated housing defining an air cavity and containing first and second spaced geophone housing each having an orthogonal pair of horizontal motion detectors secured therein ... | 01/18/1983 |
| 4332641 | Process for producing calcined coke and rich synthesis gas Carbonaceous material such as petroleum coke is calcined in the upper part of an air-injected vertical shaft kiln, and steam injected into the lower part of the kiln reacts with hot coke below the combustion zone to produce hydrogen and carbon monoxide. A... | 06/01/1982 |
| 4321981 | Combination shear wave and compressional wave seismic energy vibrator A combination of fixed geometry of vibrating masses on a baseplate coupled to the ground, the masses being at a fixed angle to each other and of relatively variable phase, can be controlled to produce both compressional and shear waves simultaneously in a... | 03/30/1982 |
| 4295096 | Electrode prospecting method providing calculable electromagnetic coupling for the indirect detection of hydrocarbon reservoirs A method and apparatus for electromagnetic hydrocarbon exploration which is accomplished by implanting at least two pairs of electrodes into the ground. One pair transmits a signal into the earth, and the other pair receives the signal. With proper proces... | 10/13/1981 |
| 4292912 | Transfer and docking apparatus for use on variable draft marine vessels A transfer and docking apparatus for use on variable draft marine vessels. A plurality of parallel sloping fenders extend from above the maximum draft level of the vessel to below the minimum draft level of the vessel. A stairway is provided adjacent and ... | 10/06/1981 |
| 4292165 | Processing high sulfur coal Coal is fed to a liquefaction process, and a resulting slurry of ash, unconverted coal, and liquids is fed to a delayed coker. Distillates are hydrotreated and stored or recycled, and the coke is calcined at high temperature to reduce the sulfur content.... | 09/29/1981 |
| 4292450 | Selective alkylation of 2,5-xylenol in the presence of 2,4-xylenol A mixture of 2,4-/2,5-xylenol can be alkylated with a suitable alkylating agent over a strongly acidic divinylbenzene-styrene copolymer to afford a greater amount of 4-t-alkyl-2,5-xylenol than 6-t-alkyl-2,4-xylenol provided the alkylation is carried out a... | 09/29/1981 |
| 4290924 | Catalyst composition useful for preparing 2,6-xylenol A process for preparing 2,6-xylenol in high selectivity and a catalyst composition useful therein are disclosed. The process comprises reacting phenol, o-cresol or mixtures thereof with methanol in presence of water, hydrogen and a catalyst consisting ess... | 09/22/1981 |
| 4289679 | Method for producing solutions of drag reducing substances A method of producing ultra-high molecular weight polymers useful as drag reducing substances or antimist agents comprising; (1) polymerizing an alpha-olefin or olefins from 2 to 30 carbon atoms with a Ziegler catalyst in a light hydrocarbon solvent; (2) addin... | 09/15/1981 |
| 4287953 | Method of removing conduit from curved borehole A method for removing a conduit from a curved borehole by applying a compression load to the conduit to cause it to bend away from the inside of the borehole curve.... | 09/08/1981 |
| 4287902 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of a combination of an alkaryl sulfonate having a molecular weight of 415 to 470 and a ... | 09/08/1981 |
| 4286822 | Underspoil slurry haulage An improved mining method for a surface mine has pairs of slurry and water pipes placed from a processing area on the surface to the floor of the mine beneath the mined out material, pairs of pipes (slurry and water) are spaced along the mining trench. A ... | 09/01/1981 |
| 4286390 | Method for removal of water from activated carbon A method of removing water from activated carbon is disclosed. Briefly, the method comprises (a) passing liquid 1,2-dichloroethane through a bed of activated carbon until a bulk water phase ceases to exit the bed or until from about 60 to about 80 weight ... | 09/01/1981 |
| 4287089 | Method for removal of water from activated carbon A method of removing water from activated carbon is disclosed. Briefly, the method comprises (a) passing liquid 1,2-dichloroethane through a bed of activated carbon until a bulk water phase ceases to exit the bed or until from about 60 to about 80 weight ... | 09/01/1981 |
| 4285615 | Corrosion resistant tension leg cables A tension leg cable is connected between a floating structure and a seafloor anchor means. The cable is a multi-strand cable having voids between adjacent strands. A fluid tight vulcanized rubber sheath is provided covering an outer surface of the cable. ... | 08/25/1981 |
| 4285881 | Dioxane removal from ether sulfate Dioxane impurities in ether sulfates are removed by using a novel steam stripping technique in which water is neither added to nor removed from ether sulfate. This is possible because the chemical potential of water in the vapor phase is kept at the same ... | 08/25/1981 |
| 4285356 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of (a) an anionic alkyl polyether ethoxylated sulfate or (b) a combination of this mate... | 08/25/1981 |
| 4284350 | Laser geophone A method for measuring the velocity of earth surface motion utilizing coherent light energy which comprises steps of generating and directing a coherent light beam toward a selected earth surface position, reflecting said beam from a stationary reflector ... | 08/18/1981 |
| 4284139 | Process for stimulating and upgrading the oil production from a heavy oil reservoir A process for thermally stimulating and upgrading oil production from a heavy oil reservoir wherein the heavy oil produced from the reservoir is combined with a hydrogen donor diluent and the mixture is subjected to thermal cracking to upgrade the heavy o... | 08/18/1981 |
| 4283089 | Pretreatment for fracturing coal seams A pretreatment for use in fracturing coal seams to increase gas permeability of the seams. The pretreatment involves injecting a material capable of swelling coal into a coal seam prior to fracturing the coal seam. The pretreatment material swells the coa... | 08/11/1981 |
| 4283574 | Process for the synthesis of 2,6-xylenol and 2,3,6-trimethylphenol Phenol is methylated over an alumina catalyst using methanol, and the reaction product therefrom is combined with additional methanol over a promoted magnesium oxide catalyst. Major reaction products are ortho-cresol, 2,6-xylenol and 2,3,6-trimethylphenol... | 08/11/1981 |
| 4283514 | Chemicals for termination of polyvinylchloride polymerizations Butylation of a mixture of xylenols and trimethylphenols gives a product which is suitable for use as a stabilizer for polyvinyl chloride. The material can be added to the reactor during polymerization as a shortstopper and retain effectiveness as a stabi... | 08/11/1981 |
