| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Polymeric extenders for flexible cement | US12125661 | 2008-05-22 | US07832479B2 | 2010-11-16 | Robert Williams; Emmanuel Therond; Terry Dammel |
| A flexible cement stable at high temperatures contains an extender that is a finely ground polyetheretherketone. The cement retains its flexibility for long times at high temperatures, for example those used for steam assisted gravity drainage of heavy oil formations, for example from about 480 to about 644° F. (249 to 340° C.). Compressive strength, tensile strength, permeability and porosity are all stable and suitable for high temperature down-hole oilfield use. | ||||||
| 142 | SHIFT OPERATING DEVICE FOR AUTOMATIC TRANSMISSION | US12482922 | 2009-06-11 | US20100043585A1 | 2010-02-25 | Eunsik KIM |
| The present invention provides a dial knob pivotably mounted and a hydraulic device for operating an inhibitor switch of an automatic transmission by creating hydraulic pressure using rotational motion of the dial knob, in order to provide a shift operating device for an automatic transmission that makes it possible to reduce manufacturing cost by having a simple structure and facilitate setting a layout by reducing a space for motion of shift knob, and makes it easy for a driver to shift by turning the shift knob with a hand to reduce the driver's tiredness and improve commercial value. | ||||||
| 143 | Polymeric Extenders for Flexible Cement | US12125661 | 2008-05-22 | US20090288831A1 | 2009-11-26 | Robert Williams; Emmanuel Therond; Terry Dammel |
| A flexible cement stable at high temperatures contains an extender that is a finely ground polyetheretherketone. The cement retains its flexibility for long times at high temperatures, for example those used for steam assisted gravity drainage of heavy oil formations, for example from about 480 to about 644° F. (249 to 340° C.). Compressive strength, tensile strength, permeability and porosity are all stable and suitable for high temperature down-hole oilfield use. | ||||||
| 144 | Solid Gas Migration Control Additives Based on Latex Powders for Cementing Applications | US11965255 | 2007-12-27 | US20080156493A1 | 2008-07-03 | Barlet-Gouedard Veronique; Ermel Michel; Daniel Sylvie |
| A gas migration prevention additive for use in cementing wells comprising a solid latex powder. | ||||||
| 145 | Permafrost ceramicrete | US10941592 | 2004-09-14 | US20050160944A1 | 2005-07-28 | Arun Wagh; Brandon Fisher; Ramkumar Natarajan |
| A dry mix of a calcined oxide of Ca and/or Mg and an acid phosphate and fly ash with or without insulating extenders useful in permafrost conditions. Calcined oxide is present at about 12% to about 40% by weight and the acid phosphate is present at about 35% to about 45% by weight. The fly ash is present at about 10% to about 50% by weight with the fly ash being between about 50% to about 100% class F with the remainder class C. Insulating extenders are present in the range from 0% to about 15% by weight of the combined calcined oxide and acid phosphate and fly ash. 0.1% to about 0.5% boric acid and/or borate by weight of the dry mix is present. | ||||||
| 146 | Methods and compositions for use in cementing in cold environments | US09644490 | 2000-08-23 | US06626243B1 | 2003-09-30 | Virgilio C. Go Boncan |
| Cement compositions for cementing wellbores in cold environments. The cement compositions may include a mixture of a reactive aluminum silicate, aluminum sulfate and hydraulic cement, and may include one or more other additives. The cement compositions may be formulated to have reduced heat of hydration as compared to conventional cements, making them suited for cementing in permafrost environments. The cement slurries may optionally be foamed using a foaming agent and energizing phase. | ||||||
| 147 | Cementing compositions and applications of such compositions to cementing oil (or similar) wells | US877112 | 1997-06-17 | US6060535A | 2000-05-09 | John Villar; Jean-Francois Baret; Michel Michaux; Bernard Dargaud |
| The present invention concerns a cementing composition for an oil (or similar) well, based on an aluminous hydraulic cement, fine particles, hollow microspheres, water in a quantity such that the porosity is in the range 25% to 50%, a dispersing agent, a setting accelerator for the aluminous cement and optionally, other conventional additives. The invention is of particular application to cementing conductor pipes in arctic zones or in deep-water wells. | ||||||
| 148 | Method for waterproofing rigid structural materials | US632855 | 1996-04-16 | US5624714A | 1997-04-29 | John H. Gaveske |
| A coating for waterproofing and sealing a rigid structural unit using a styrene polymeric film cast from an organic solvent is disclosed. The coating is easily maintained as damaged areas and imperfections can be repaired by simply applying additional liquid composition to the damaged area, and the liquid composition remelts the existing film allowing the newly formed film to be continuous. In addition, the composition can be applied to structural units in sub-freezing temperatures or to wet surfaces. Methods relating to the use of the liquid coating composition are also disclosed. | ||||||
| 149 | Air entrainment compositions for cement compositions | US449318 | 1995-05-24 | US5522927A | 1996-06-04 | Timothy Hegge |
| Compositions and methods relating to cementitious compositions are provided. The use of a blend of a rosin and a tannin to entrain air into cementitious compositions is provided. A blend of a rosin and a tannin in a weight ratio of about 1:1.22 to about 1:1.86 are added to a wet cementitious composition at levels of less than 1% by weight based on the weight of the cement and air is mixed into the cement. The resulting cement will contain, e.g. 5% to 10% by volume air which improves the resistance of the set cement to freeze damage. Also provided is a method of entraining air into a cementitious composition which employs such a blend. | ||||||
| 150 | Weather resistant soil cement | US259478 | 1994-06-14 | US5494514A | 1996-02-27 | Russell L. Goodson; Gary J. Colaizzi; Brian Masloff; Joseph J. Feiler |
| A weather resistant soil cement with an open pore structure for resisting freeze-thaw damage is formed of cement, fly ash, Free aggregates, water, and an aqueous foamed surfactant, and other application specific additives. The material is uniquely suited for using indigenous soils, mill tailings, or granular waste products as the aggregate component of the mixture, although commercially produced aggregates may be used depending on economics and availability. Due to its low density and flowable nature, it can be pumped or placed by gravity and without compaction. The resulting product is a low density material with construction and mining applications, that is suited for use as a fill or mad base. Specific product formulations are easily designed to permit removal at local sites with conventional excavating equipment. | ||||||
| 151 | Phase change compositions | US638827 | 1991-01-08 | USRE34880E | 1995-03-21 | Ival O. Salyer |
| Compositions containing crystalline, straight chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons. | ||||||
| 152 | Frost de-icing salt-resistance of concrete constructions | US74335 | 1993-06-10 | US5395658A | 1995-03-07 | Hans Jaklin |
| The frost-de-icing salt-resistance of concrete structures is improved by applying to the surface of the concrete an aqueous alkali silicate solution comprising______________________________________ slilicic acid (calculated as SiO.sub.2) 30-32 moles alkali metal ions (calculated as Na.sup.+1) 23-24.3 moles C.sub.1 -C.sub.3 alcohol (calculated as ethanol) 2-2.1 moles carbonate (calculated as CO.sub.3.sup.-2) 1.6-2.1 moles water at least 400 moles. ______________________________________ | ||||||
| 153 | Concrete composition | US902925 | 1992-06-23 | US5352290A | 1994-10-04 | Haruyuki Takeshita; Haruya Sawara; Shohei Hoshino; Yoshiyuki Shoji |
| A concrete composition which has superior fluidity and filling property and from which a concrete structure having high quality and durability and being excellent in resistance to freezing and thawing can be made without compaction by vibration. The composition comprises cement, water, aggregate, at least one admixture selected from the group consisting of a water reducing agent, an air entraining agent, an air entraining water reducing agent and a superplasticizer, and at least one viscosity improver of a cellulose type of viscosity improver having a low foaming property which shows specific viscosity and an acrylic type of viscosity improver having a low viscosity which shows specific viscosity in a specified amount. | ||||||
| 154 | Low temperature well cementing compositions and methods | US112826 | 1993-08-26 | US5346550A | 1994-09-13 | Robert A. Kunzi; Edward F. Vinson; Patty L. Totten; Bobby G. Brake |
| Improved hydraulic cement compositions and methods for cementing wells drilled through low temperature earth formations wherein the cement is subjected to freeze-thaw cycling are provided. The compositions are comprised of a hydraulic cement, gypsum cement, fly ash, an alkali metal halide, water, and an alcohol freezing point depressant. | ||||||
| 155 | Pumpable ceramic fiber composition | US322270 | 1989-03-10 | US5268031A | 1993-12-07 | Perry B. Lassiter; David J. Messina |
| A pumpable ceramic fiber composition having, by weight, from about 20% to about 30% of ceramic fiber, from about 5% to about 10% of a sodium silicate binding agent, from at least 1% to less than 5% of a binder migration retarding agent, from about 0.5 to about 2.5% of a viscosity modifying and lubricating agent, and from about 60% to about 70% of a liquid vehicle, preferably water. The pumpable ceramic fiber composition is resistant to deterioration under repeated freezing and thawing cycles. | ||||||
| 156 | Phase change compositions | US088040 | 1987-08-19 | US4797160A | 1989-01-10 | Ival O. Salyer |
| Compositions containing crystalline, straight chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons. | ||||||
| 157 | Insulating polymer concrete | US762876 | 1985-08-06 | US4689358A | 1987-08-25 | H. Peter Schorr; Jack J. Fontana; Meyer Steinberg |
| A lightweight insulating polymer concrete formed from a lightweight closed cell aggregate and a water resistance polymeric binder. | ||||||
| 158 | Corrosion-proof concrete | US843661 | 1986-03-25 | US4668541A | 1987-05-26 | G/o/ ran Fagerlund |
| Salt damage to concrete structures as a result of contact with dry salt, sea water or like salt environments can be avoided in the case of new structures and repaired in the case of damaged structures by applying a layer of slag cement concrete to the structures. The ability of slag cement to absorb chlorides and to delay chloride penetration greatly lengthens the time required to initiate corrosion of the reinforcing irons by the chlorides present and to reduce the effect of chlorides in conjunction with frost. The slag cement-concrete also has a leaching effect on chloride-infected structures and in the case, for example, of an old bridge pier having applied thereto a layer of slag cement-concrete the carbonation front is halted and a new front is formed in the protective layer. The chloride profile extending through the pier is also changed as a result of chloride irons diffusing out from the infected concrete and being neutralized in the protective layer. The slag cement can also be applied to form a salt-frost resistant layer by spray casting techniques, this being difficult to achieve with conventional shotcrete base on other types of cements. | ||||||
| 159 | Well cementing in permafrost | US928648 | 1978-07-27 | US4176720A | 1979-12-04 | William N. Wilson |
| A process for cementing a string of pipe in the permafrost region of a borehole of a well wherein aqueous drilling fluid actually used in drilling the wellbore in the permafrost region of a wellbore is employed. The drilling fluid contains or is adjusted to contain from about 2 to about 16 volume percent solids. Mixing with the drilling fluid (1) an additive selected from the group consisting of lignosulfonate, lignite, tannin, and mixtures thereof, (2) sufficient base to raise the pH of the drilling fluid into the range of from about 9 to about 12, and (3) cementitious material which will harden in from about 30 to about 40 hours at 40.degree. F. The resulting mixture is pumped into the permafrost region of a wellbore to be cemented and allowed to harden in the wellbore. There is also provided a process for treating an aqueous drilling fluid after it has been used in drilling the wellbore in permafrost, and a cementitious composition for cementing in a permafrost region of a wellbore. | ||||||
| 160 | Composition and method for cementing wells in low temperature formations | US37460973 | 1973-06-28 | US3891454A | 1975-06-24 | CUNNINGHAM WILLIS C; GEORGE CHARLES R; SHRYOCK STANLEY H |
| The present invention relates to a composition and method for cementing pipe and casing in wells in low temperature earth formations and relates more particularly to the cementing of casing in oil and gas wells drilled through permafrost formations.
|
||||||
QQ群二维码
意见反馈
意见反馈