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| Number | Title | Issue Date |
| 7178590 | Well fluids and methods of use in subterranean formations Improved well fluids that include hollow particles, and methods of using such improved well fluids in subterranean cementing operations are provided. Also provided are methods of cementing, methods of reducing annular pressure, and well fluid compositions. While the... | 02/20/2007 |
| 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 |
| 6968898 | System and method for removing particles from a well bore penetrating a possible producing formation A system and method for removing particles from a well bore penetrating a possible hydrocarbon producing formation, according to which drilling fluid is mixed with a weighted material, and the mixture is introduced into a well bore so that the mixture scours any par... | 11/29/2005 |
| 6737385 | Well drilling and servicing fluids and methods of removing filter cake deposited thereby Well drilling and servicing fluids for use in producing formations and methods of removing filter cake therefrom are provided. The methods basically comprise using a drilling or servicing fluid comprised of water, a density increasing water soluble salt, a fluid los... | 05/18/2004 |
| 6258756 | Salt water drilling mud and method A salt water drilling mud comprising a mixture salt water, a solid phase such as pre-hydrated bentonite, attapulgite, sepiolite, and extended bentonite, among others and optionally a synthetic oil, which is mixed with at least one of five different module... | 07/10/2001 |
| 5518996 | Fluids for oilfield use having high-solids content The particulate phase of fluids according to the present invention comprises particles which have specifically adapted size ranges or granulometries. All the essential properties of fluids and their cost are very clearly improved. The technique may be app... | 05/21/1996 |
| 4967838 | Oil well and method using completion fluid Disclosed is a method of preventing fluids in the ground from rising around an oil well pipe by filling the space around the pipe with an oil well completion fluid comprising water, about 50 to about 65% by weight, based on total fluid weight, of dipotass... | 11/06/1990 |
| 4828724 | Drilling fluid to minimize solids disintegration The present invention relates to a drilling fluid comprising a stable oil in water emulsion consisting of: (a) 50-96 %v aqueous phase, (b) 3-40%v oil phase, and (c) 1-10 %v of at least one surfactant belonging to the class of: (a) ethoxylated amines, (b) ... | 05/09/1989 |
| 4422855 | Method of thickening solutions using normally nongelling clays Normally nongelling montmorillonite clay is treated to have gelling characteristics by drying the clay to 10 to 15 percent free moisture and grinding the clay to at least 100 percent finer than 45 microns. To thicken an aqueous solution, the clay is dispe... | 12/27/1983 |
| 4000076 | Drilling mud having reduced corrosiveness A phosphate added to a drilling mud, e.g., a drilling mud containing a pitting-type or other corrosion producing component such as potassium chloride, significantly reduces corrosiveness and converts any residual corrosiveness to a general, as distinguish... | 12/28/1976 |
| 3962099 | Water base drilling mud composition An improved water base drilling mud composition wherein calcium ions are controlled and converted to water-insoluble plant nutrient compounds by the use of monocalcium phosphate compounds, said composition comprising an aqueous suspension containing from ... | 06/08/1976 |
