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| Number | Title | Issue Date |
| 8182178 | Directional fracture grouting method with polymer for seepage control of dikes and dams A directional fracture grouting method with polymer for seepage control of dikes and dams includes the steps of: arranging a plurality of directional fracture grouting holes at a predetermined distance along the axis of the dike or dam; forming the directional fract... | 05/22/2012 |
| 7837412 | Binder for mine tailings, alluvial sand and the like A binder for mine tailings, alluvial sand and other aggregate used as a backfill for an underground void comprises ferrous slag, cement kiln dust and/or lime kiln dust, and Portland cement and/or lime; the binder displays strength characteristics better than or comp... | 11/23/2010 |
| 7651302 | Method of enhanced end bearing capacity via post construction preload/reload A method for increasing stiffness of bearing strata formed of soil, rock or other geomaterial includes the steps of injecting non-hardening pre-compression fluids, in the form of viscous non-hardening slurries that are pressurized beneath a foundation tip for extend... | 01/26/2010 |
| 7455479 | Methods and systems for monitoring pressure during jet grouting A method for preventing soil fracture and/or monitoring borehole pressure during jet grouting that may include monitoring borehole pressure at one or more points in a jet grouting borehole while the jet grouting is being performed and determining whether the borehol... | 11/25/2008 |
| 7438500 | Erosion resistant barrier with varying permeabilities The invention relates to a barrier cap material including a blend of: a plurality of aggregate particles, and a plurality of manufactured composite particles including a hydratable sealant material. In a particular embodiment, the segregation of a blend of aggregate... | 10/21/2008 |
| 7334644 | Method for forming a barrier A method for forming a barrier to seal off a remote chamber includes the steps of: forming a borehole that communicates between a first location and the remote chamber; inserting a conduit through the borehole to extend into the remote chamber; introducing a flowabl... | 02/26/2008 |
| 7293941 | Methods for cementing using compositions containing salts Disulfonate salts of 2,4-pentanedione and methods for making such salts are described. The disulfonate salts are useful as cement dispersants. Cement compositions including such salts, methods for making cement compositions including such salts, and methods for perf... | 11/13/2007 |
| 7290611 | Methods and systems for cementing wells that lack surface casing Methods and systems for cementing casing in well bores drilled in subterranean formations, and more particularly, methods and systems for cementing casing in a well bore without surface casing or a well head are provided. A method provided herein may comprise sealin... | 11/06/2007 |
| 7290962 | Method for reducing the liquefaction potential of foundation soils The aim of this invention is to present a method in which holes (1) are drilled into the ground for the injection of highly expansive grouts (5), so that the subsoil is void filled and compacted and thus the liquefaction potential under earthquake and ... | 11/06/2007 |
| 7281576 | Apparatus and methods for sealing voids in a subterranean formation Downhole tools that include an outer tubing disposed around an inner tubing for placement of a sealant mixture into a void in a subterranean formation and associated methods of use are provided. Furthermore, a method is provided for preparing a cement composition, w... | 10/16/2007 |
| 7264734 | Method for treating dredged material The present invention provides a method for treating dredged material in which liquid is first added to the dredged material, and dewatering the dredged material to obtain a filtrate and a solid portion. Contaminants are removed from the dredged material by at least... | 09/04/2007 |
| 7201798 | Set-delayed cement compositions comprising hydrated lime and silica and methods of cementing in subterranean formations Cement compositions for use in subterranean formations are provided. An example of a cement composition is a cement composition comprising: water, a cementitious component consisting essentially of: hydrated lime, and silica; and a dispersant. Another example of a c... | 04/10/2007 |
| 7192221 | System for preventing seismic liquefaction of ground in urbanized area A system for preventing seismic liquefaction of the ground in an urban area built on reclaimed land consisting of a loose fine grained layer vulnerable to liquefaction underlain with a soft cohesive layer liable to uneven settlement. The system includes a plurality ... | 03/20/2007 |
| 7171786 | Window well A modular window well arrangement includes one or more window well members. The window well members can be interconnected in a vertically stacked arrangement to provide the required overall height. Snap-connectors interconnect the vertically adjacent window well mem... | 02/06/2007 |
| 7163358 | Injection grouting The invention relates to the use of a composition for injection grouting obtainable by mixing an alkali metal silicate or an organic silicate, colloidal silica particles, and at least one gelling agent, wherein the weight ratio of colloidal silica to silicate is fro... | 01/16/2007 |
| 7097388 | Grout injecting/structure anchoring system A grout injecting/structure anchoring system has a support bracket with a horizontal portion and a pair of threaded recesses and a sleeve there between. A grout tube has a plurality of apertures along its length. A lower cross brace is positioned above the sleeve an... | 08/29/2006 |
| 7090017 | Low cost method and apparatus for fracturing a subterranean formation with a sand suspension The present invention is directed to a low cost method and apparatus for fracturing a subterranean formation. The invention involves using a centrifugal pump to combine a fracture fluid, a sand suspension and liquid additive and discharge a mixture of these componen... | 08/15/2006 |
| 7073589 | System for fracturing wells using supplemental longer-burning propellants A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to the well. A supplemental prope... | 07/11/2006 |
| 7067004 | Grout compositions having high thermal conductivities and methods of using the same Grout slurries are provided that have high thermal conductivities of greater than about 1.4 Btu/hr-ft-° F. and low hydraulic conductivities ranging from about 5×10−9 cm/s to about 1×10−8 cm/s. Such grout slurries comprise water and a grout composition that is... | 06/27/2006 |
| 7059805 | Process for environmental pacification of drill cuttings The process for environmental pacification of drill cuttings which contain drilling fluid residue is characterized by mixing said cuttings with dehydrated limestone coke ash in the presence of water. Upon mixing the drilling fluid residue becomes entrapped into a no... | 06/13/2006 |
| 7040842 | Method and device for making a foundation member A foundation member in the ground includes a soil working implement for loosening soil material in a soil area, a supply device for supplying a liquid to the loosened soil material and a mixing device for mixing the loosened soil material in the soil area with the l... | 05/09/2006 |
| 7029207 | Rapid-set injection system using high-speed jet fluid A rapid-set injection system using high-speed jet fluid for forming a pile-shaped solid body in the ground has an injection rod which does not jam in the ground and which has two or three jet nozzles so that the injection rod linearly excavates the target ground. Th... | 04/18/2006 |
| 7021864 | Soil binding and revegetation compositions and methods of making and using such compositions Soil binding and revegetation compositions useful for stabilizing soil and promoting vegetation or revegetation of soil comprise water, an endosperm, an iron compound, a strong base, and a fibrous material comprising at least two different types of fibers. The endos... | 04/04/2006 |
| 7011475 | Method for preventing seismic liquefaction of ground in urbanized area and facilities used in this method A method of preventing seismic liquefaction of the ground in an urban area built on reclaimed land consisting of a loose fine grained layer vulnerable to liquefaction underlain with a soft cohesive layer liable to uneven settlement comprising pumping out pore water ... | 03/14/2006 |
| 6988856 | Large scale soil processing tool for use with a preformed sacrificial guide A method is provided for centering and guiding a large diameter soil processing tool. A sacrificial guide is formed by using a small diameter soil processing tool to form a soil-cement column having a relatively hard outer section and a relatively soft center sectio... | 01/24/2006 |
| 6966610 | Treatment of rock surfaces A method for providing a protective coating in a mine comprising spraying onto the rock surfaces of the mine a hot melt adhesive in an amount to form a coating at least 1 mm, preferably at least 2 mm in thickness and allowing the coating to solidify. The hot melt ad... | 11/22/2005 |
| 6953505 | Stable and biodegradable foamed cement slurries, additives and methods The present invention relates to stable and biodegradable foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foamin... | 10/11/2005 |
| 6951249 | Foamed cement slurries, additives and methods The present invention relates to foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and an environmentally benign foaming and stabilizi... | 10/04/2005 |
| 6908508 | Settable fluids and methods for use in subterranean formations The present invention relates to subterranean operations, and more particularly, to settable fluids comprising vitrified shale and hydrated lime and methods of using such settable fluids in subterranean applications. In an exemplary embodiment, the settable fluids o... | 06/21/2005 |
| 6902352 | Soft ground improvement system An apparatus for improving soft ground, in which cement slurry is vigorously discharged from an injection rod by highly pressurized air, thus allowing hardening agent to evenly infiltrate the soft ground, is disclosed. The apparatus includes an injection rod (20 | 06/07/2005 |
| 6874976 | Multipoint grouting method and apparatus therefor A common feature of the method and apparatus for multipoint grouting resides in using a multiple injection apparatus having a plurality of unit pumps in one plant, driven independently of each other and controlled by a centralized control device. The plurality of th... | 04/05/2005 |
| 6869256 | Sealing composition and its use A method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about 72%, a method for preparing the sealing composition and the compositi... | 03/22/2005 |
| 6857824 | Sealing composition and its use The present invention relates to a method for sealing rock or soil comprising inserting a sealing composition obtained by mixing a silica sol and at least one gelling agent, wherein the silica sol has an S-value higher than about 72%, a method for preparing the seal... | 02/22/2005 |
| 6833091 | Method for injecting of foamed concrete and a foamed concrete A method for stabilizing gravel, sand, crushed stone, rock and concrete structures which have cracks by injecting a pumpable, low viscous aqueous aerated concrete with a pore volume of at least 20% by volume into the cracks at a low pressure and then increasing the ... | 12/21/2004 |
| 6796746 | Subterranean drilling and in situ treatment of wastes using a contamination control system and methods relating thereto Systems and methods relating to subterranean drilling while maintaining containment of any contaminants released during the drilling. A thrust block installed over a zone of interest provides an overflow space for retaining any contaminants and excess sealant return... | 09/28/2004 |
| 6796378 | Methods of cementing high temperature wells and cement compositions therefor The present invention provides light weight high temperature well cement compositions and methods. The compositions are basically comprised of calcium aluminate, ASTM class F fly ash, sodium polyphosphate, a cationic derivatized starch fluid loss control additive an... | 09/28/2004 |
| 6739806 | Cement compositions with improved fluid loss characteristics and methods of cementing in subterranean formations The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The cement compositions comprise a hydraulic cement, water, and a fluid loss ... | 05/25/2004 |
| 6739805 | Waterstop for foundation elements and method of installation A waterstop, 10 or 11, for restricting or preventing the flow of water across the joints of foundation elements 8, such as between or along individual diaphragm wall panels or between or along individual secant wall piles. The present invention ... | 05/25/2004 |
| 6722820 | Method for installing grout within a piling A method for securing piling segments together to form a single foundation piling using an alignment securing assembly and vibrations sent through the piling as. Piling segments are driven into the ground on top of each other, forming a piling. A single piling passa... | 04/20/2004 |
| 6695543 | Method for filling voids with aggregate material A method for filling a void using an aggregate material, such as mine tailings, the fill material being pumped from a site which is located remote from the void. A fluid, aerated material is formed by mixing the particulate solid material with finished fo... | 02/24/2004 |
