Patent application number | Description | Published |
20110053808 | Suspension Characteristics in Invert Emulsions - Among the methods provided is a method of drilling a subterranean well with an invert emulsion fluid comprising: providing an invert emulsion fluid formed by combining components that comprise: an oil-based continuous phase; an aqueous discontinuous phase; and a polar hydrophobic additive that comprises a polar hydrophobe, wherein the polar hydrophobic additive may substantially increases the yield point, the low-shear yield point, or both of the invert emulsion fluid relative to a fluid without a polar hydrophobic additive while limiting the change in the plastic viscosity to no more than about 35% of the change in the property with the largest increase; and placing the invert emulsion fluid in a subterranean formation. | 03-03-2011 |
20110214864 | Invert drilling fluids having enhanced rheology and methods of drilling boreholes - An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of hydrophobic amines, most preferably dimer diamines. | 09-08-2011 |
20120097403 | Invert Drilling Fluids Having Enhanced Rheology and Methods of Drilling Boreholes - An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of hydrophobic amines, most preferably dimer diamines. | 04-26-2012 |
20130303410 | Invert Emulsion Drilling Fluids for Flat Rheology Drilling - An invert emulsion drilling fluid, and a method of drilling with such fluid, having substantially flat or relatively controlled rheology, as demonstrated by the drilling fluid exhibiting little change in its yield point and gel strength across a temperature range of from about 40° F. to about 180° F., and effected with addition of a fatty dimer diamine additive together with an acid and without the addition of organophilic clays or lignites. | 11-14-2013 |
20130303411 | Methods and Materials to Enhance High Temperature Rheology in Invert Emulsions - An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of a rheology additive of the invention comprising fatty dimer diamines or dimer diamines and an organic acid or ester of the acid. A nonlimiting example of such a rheology additive comprises a C36 fatty dimer diamine and adipic acid or dimethyl adipate. | 11-14-2013 |
20130310282 | Wellbore Servicing Fluids and Methods of Making and Using Same - A method of servicing a wellbore comprising placing an invert emulsion drilling fluid having an oleaginous continuous phase, a non-oleaginous discontinuous phase, and a fluid loss additive into a wellbore wherein the fluid loss additive comprises a quaternary ammonium compound containing at least one ester linkage. A method of servicing a wellbore comprising introducing a clay-free invert emulsion drilling fluid comprising distearoylethyl dimonium chloride to the wellbore. A wellbore servicing fluid comprising an invert emulsion drilling fluid having an oleaginous continuous phase, a non-oleaginous discontinuous phase, and a fluid loss additive into a wellbore wherein the fluid loss additive comprises an esterquat characterized by Structure A: | 11-21-2013 |
20140066338 | Salt-Free Invert Emulsion Drilling Fluids and Methods of Drilling Boreholes - An invert emulsion drilling fluid, and a method for the use thereof in drilling wellbores, with good rheological properties at high temperatures and pressures. One embodiment of the drilling fluids is free of organophilic clays and lignites, free of calcium chloride, and comprises glycerol in the internal phase, and a suspension agent comprising a combination of a fatty dimer diamine and a short chain acid, such as citric acid. In one embodiment, the base oil for the emulsion is a paraffin and/or mineral oil. The drilling fluids provide good rheological properties including good suspension of drill cuttings. | 03-06-2014 |
20140087976 | Method of Drilling Boreholes With Invert Emulsion Drilling Fluids Having Enhanced Rheology - An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology effected with addition of a fatty dimer diamine additive in the presence of little or no lime. The drilling fluids of the present invention exhibit similar yield points and gel strengths at temperatures ranging from about 40° F. to about 375° F. or higher and at pressures ranging from about 0 psi to about 13500 psi. | 03-27-2014 |
20140116695 | EMULSIFIED ACID WITH HYDROPHOBIC NANOPARTICLES FOR WELL STIMULATION - A composition in the form of an emulsion having: (i) a continuous oil phase comprising: (a) an oil; (b) an emulsifier; and (c) a particulate comprising an oxide selected from the group consisting of metal oxides, metalloid oxides, and any combination thereof, wherein the particulate is hydrophobically modified, would not dissolve in oil or 28% hydrochloric acid, and has a surface area in the range of 700 m | 05-01-2014 |
20150024975 | INVERT EMULSION FLUIDS - Invert emulsion fluids comprising a fatty dimer diamine having 28 to 48 carbon atoms per molecule and an acid or an acid derivative and methods of using such invert emulsion fluids for the treatment of at least a portion of a subterranean formation are provided. The invert emulsion fluids can be suitable for use as, for example, packer fluids and drilling fluids. | 01-22-2015 |