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| Number | Title | Issue Date |
| 4494605 | Sand control employing halogenated, oil soluble hydrocarbons This invention relates to a method for treating wells completed in subterranean formations which contain unconsolidated sand particles, so as to form a permeable barrier which will permit the flow of liquids therethrough while restraining the flow of the ... | 01/22/1985 |
| 4464268 | Method for restoring permeability of injection wells A method is disclosed for restoring permeability of injection wells which have become plugged with polymer residue, protein debris, biological matter and the like. The method includes treating the well for a period of time with an aqueous solution contain... | 08/07/1984 |
| 4457372 | Method of recovering petroleum from underground formations A method is disclosed in which the production of petroleum is improved or reinstated in formations that have been partially depleted by primary recovery techniques or where the communication between the injection well and the production well has been rest... | 07/03/1984 |
| 4450307 | Hydroxy-containing bicycloalkane ether compounds New hydroxy-containing alkyl-substituted bicycloalkane ether compositions useful in the preparation of valuable detergent and lubricating compositions are obtained by reacting an alkyl-substituted 2-norbornene with a polyhydric alcohol in the presence of ... | 05/22/1984 |
| 4448697 | Secondary recovery process Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using an aqueous drive fluid such as water or brine containing dissolv... | 05/15/1984 |
| 4440652 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with polyacrylamide or par... | 04/03/1984 |
| 4434246 | Process for preparing ethylene glycol and lower monohydric alcohols from syngas using a novel catalyst system Ethylene glycol and lower monohydric alcohols are prepared from syngas in good yield by contacting a mixture of carbon monoxide and hydrogen with a catalyst system comprising a ruthenium-containing compound and a special substituted aromatic compound both... | 02/28/1984 |
| 4433178 | Process for preparing acetaldehyde from methanol and synthesis gas using a novel catalyst composition Acetaldehyde is prepared in good yield from methanol and synthesis gas by contacting the mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine-free catalyst composition comprising ruthenium powder, a cobalt-containing compound and an ... | 02/21/1984 |
| 4433177 | Process for preparing acetaldehyde from methanol and synthesis gas using a novel catalyst composition Acetaldehyde is prepared from methanol and synthesis gas with good selectivity and yield by contacting a mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine free catalyst composition comprising (1) ruthenium powder, (2) a cobalt-con... | 02/21/1984 |
| 4433176 | Process for preparing acetaldehyde from methanol and synthesis gas using a novel catalyst composition Acetaldehyde is prepared in good yield from methanol and synthesis gas under mild reaction conditions by contacting a mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine free catalyst composition comprising (1) ruthenium powder, (2)... | 02/21/1984 |
| 4431778 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acryla... | 02/14/1984 |
| 4430482 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with polyacrylamide or par... | 02/07/1984 |
| 4430481 | Secondary recovery method Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water or brine, thickened with a copolymer... | 02/07/1984 |
| 4425453 | Asphaltic compositions containing alkoxylated terpolymers Asphaltic compositions having improved elastic properties and improved adhesion to aggregate particles as well as a high degree of resistance to stripping action are provided which comprise a major amount of asphalt and a minor amount of terpolymer of eth... | 01/10/1984 |
| 4424384 | Process for homologation of methanol to ethanol Ethanol is prepared by contacting methanol, hydrogen and carbon monoxide with a catalyst system comprising an iodide-free ruthenium-containing compound, an iodide-free quaternary phosphonium or ammonium base or salt and a halide-free cobalt-containing com... | 01/03/1984 |
| 4421863 | Process for preparing low molecular weight oxygenated compounds from syngas using a novel catalyst system Low molecular weight oxygenated compounds, and particularly ethylene glycol and methanol, are prepared from syngas in improved yields by contacting a mixture of carbon monoxide and hydrogen with a catalyst system comprising a rhodium-containing compound, ... | 12/20/1983 |
| 4420598 | Secondary recovery process using brine soluble terpolymers Hydrocarbons are recovered from a subterranean hydrogen-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a terpolymer of acrylami... | 12/13/1983 |
| 4417989 | Propping agent for fracturing fluids Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with polyacrylamide or par... | 11/29/1983 |
| 4414410 | Process for preparing alkyl esters by homologation of the next lower alkyl ester Alkyl esters, such as ethyl acetate, are prepared by contacting the corresponding next lower carbon number alkyl ester, such as methyl acetate, with carbon monoxide and hydrogen in the presence of an iodine or iodide-free catalyst composition comprising a... | 11/08/1983 |
| 4412926 | Alkyl norbornyl ether sulfonates useful for solubilizing petroleum sulfonates in oil fluid brine solutions Alkyl norbornyl ether sulfonates are prepared by reacting, for example, an allyl alcohol ethoxylate with an alkyl norbornene in the presence of an acid catalyst. The allyl ethers so obtained are subsequently sulfonated. These compounds, which exhibit a hi... | 11/01/1983 |
| 4409405 | Production of ethanol from methanol and synthesis gas Ethanol is formed by contacting a mixture of carbon monoxide, hydrogen and methanol with a catalyst comprising a cobalt-containing compound and a germanium-containing compound, such as dicobalt octacarbonyl and triphenylgermanium hydride in the presence o... | 10/11/1983 |
| 4406799 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acryla... | 09/27/1983 |
| 4399233 | Process for preparing low molecular weight oxygenated compounds from syngas using novel catalyst system Low molecular weight oxygenated compounds, and particularly ethylene glycol and methanol, are prepared from syngas in good yield by contacting a mixture of carbon monoxide and hydrogen with a catalyst system comprising a rhodium-containing compound, an or... | 08/16/1983 |
| 4396726 | Process for preparing ethylene glycol and lower monohydric alcohols from syn gas using a novel catalyst system Ethylene glycol and lower monohydric alcohols are prepared from syn gas in improved yields by contacting a mixture of carbon monoxide and hydrogen with a catalyst system comprising a ruthenium-containing compound and a special manganese-containing compoun... | 08/02/1983 |
| 4396519 | Alkyl-substituted bicycloalkyl ethers as useful lubricants and lubricating oils containing said ethers Alkyl-substituted bicycloalkyl ether compositions useful in the preparation of synthetic lubricant compositions are obtained by reacting an alkyl-substituted 2-norbornene with a monohydric alcohol in the presence of an acidic catalyst.... | 08/02/1983 |
| 4390734 | Process for producing propylene glycol monoalkyl ethers from acetaldehyde, an alkanol and syngas using a new catalyst system Propylene glycol monoalkyl ethers are prepared in good yield by reacting acetaldehyde and an alkanol (or by reacting an acetal) with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt-containing compound and a cocatalyst compri... | 06/28/1983 |
| 4374285 | Synthesis of ethanol by homologation of methanol Ethanol is prepared by contacting methanol, hydrogen and carbon monoxide with a catalyst system comprising a ruthenium compound, a quaternary phosphonium or ammonium base or salt and a cobalt compound such as cobalt iodide.... | 02/15/1983 |
| 4371724 | Ethanol synthesis by homologation of methanol Ethanol is prepared by contacting methanol, hydrogen and carbon monoxide with a catalyst system comprising a ruthenium compound, a quaternary phosphonium or ammonium base or salt and a cobalt compound such as cobalt iodide in the presence of a non-polar, ... | 02/01/1983 |
| 4371444 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water containing dissolved therein: (a) a ... | 02/01/1983 |
| 4366259 | Production of acetic acid and propionic acid and their esters This invention concerns a process of making acetic acid and propionic acid and their esters which comprises contacting a mixture of CO and H2 with a catalyst system comprising a ruthenium-containing compound and a cobalt halide dispersed in a l... | 12/28/1982 |
| 4365096 | Alkyl-substituted bicycloalkyl ethers Alkyl-substituted bicycloalkyl ether compositions useful in the preparation of synthetic lubricant compositions are obtained by reacting an alkyl-substituted 2-norbornene with a monohydric alcohol in the presence of an acidic catalyst.... | 12/21/1982 |
| 4362822 | Process for preparing acetic and propionic acids and their esters This invention concerns a process for making acetic and propionic acids and their esters which comprises contacting a mixture of CO and H2 at a pressure of about 500 psig or greater and at a temperature of at least about 150° C. with a catalys... | 12/07/1982 |
| 4362821 | Process for preparing alkanols from synthesis gas This invention concerns a process of making alkanols and particularly methanol which comprises reacting a mixture of CO and H2 at a pressure of about 500 psig or greater and at a temperature of at least 150° C. in the presence of a catalyst sy... | 12/07/1982 |
| 4357477 | Process for preparing ethylene glycol monoalkyl ethers This invention pertains to the production of ethylene glycol monoalkyl ethers by reaction of carbon monoxide and hydrogen with (a) formaldehyde and an alcohol or (b) an acetal in the presence of a catalyst comprising a cobalt-containing compound and a tin... | 11/02/1982 |
| 4356327 | Process for preparing propylene glycol monoalkyl ethers and alkoxyacetones Propylene glycol monoalkyl ethers and alkoxyacetones are formed by contacting a mixture of carbon monoxide and hydrogen and (a) acetaldehyde or (b) an acetal and an alcohol, with a catalyst comprising a cobalt-containing compound and at least one tin- or ... | 10/26/1982 |
| 4356332 | Process for preparing ethylene glycol This invention pertains to the production of ethylene glycol by reaction of formaldehyde with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt-containing compound and a tin-or germanium-containing promoter and in the presence... | 10/26/1982 |
| 4351907 | Preparation of ethylene glycol A process for preparing ethylene glycol wherein a mixture of carbon monoxide and hydrogen is contacted at an elevated temperature and pressure and in the presence of a solvent with a ruthenium compound and a promoter, such as pyrocatechol. In another aspe... | 09/28/1982 |
| 4343712 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acryla... | 08/10/1982 |
| 4341647 | Process for secondary recovery Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a copolymer of acryla... | 07/27/1982 |
| 4339545 | Alkanols from synthesis gas This invention concerns a process for making alkanols which comprises contacting a mixture of CO and H2 at a pressure of 500 psig or greater and at a temperature of at least 150° C. with a catalyst system comprising a ruthenium-containing comp... | 07/13/1982 |
