Earth boring, well treating, and oil field chemistry inventions 04/07

20070093393 - Emulsifier based on polyamines and fatty acid/maleic anhydride: The present invention generally relates to a polyamide emulsifier, to a drilling fluid composition that comprises said emulsifier and to a method of drilling a borehole into a subterranean formation utilizing the drilling fluid composition of the invention.... Agent: Akzo Nobel Inc.

20070093394 - Non-emulsifying anti-sludge composition for use in the acid treatment of hydrocarbon wells: A composition for inhibiting or preventing the formation of emulsions in the presence of treating acids during the acid stimulation of hydrocarbon wells is provided. The composition includes an alkyl aryl sulfonic acid or salt thereof, an acetylenic alcohol, an alkyl diphenyl oxide sulfonic acid or derivative thereof, in an... Agent: Howrey LLP

20070087940 - Method of using viscoelastic vesicular fluids to enhance productivity of formations: A process for enhancing the productivity of a formation consists of introducing into the formation a viscoelastic fluid which contains at least one surfactant, at least one quaternary amine polyelectrolyte, water, and a non-aqueous solvent. The surfactant forms aggregation structures or vesicles. The fluid, which significantly enhances fluid viscosity and... Agent: Jones & Smith, LLP

20070087941 - Storable fracturing suspensions containing ultra lightweight proppants in xanthan based carriers and methods of using the same: A storable suspension for the treatment of a subterranean formation contains an ultra lightweight (ULW) particulate and a carrier fluid of xanthan gum or a xanthan variant, a polysaccharide and water. The suspension exhibits a high viscosity at low shear rates and does not appear to separate for at least... Agent: Jones & Smith, LLP

20070082822 - Invert drilling fluids and methods of drilling boreholes: Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or having fragile gel behavior and providing superior oil mud rheology... Agent: Karen B. Tripp Attorney At Law

20070082823 - High performance water-based drilling mud and method of use: A water based drilling fluid for use in drilling a subterranean well through a subterranean formation that swells in the presence of water, the drilling fluid is formulated to include: an aqueous based continuous phase; a weight material; an optional shale hydration inhibition agent and a shale encapsulator. The shale... Agent: Carter J. White Legal Department M-i L.L.C.

20070082824 - Additives for imparting fragile progressive gel structure and controlled temporary viscosity to oil based drilling fluids: Metal cross-linked phosphate ester compositions impart fragile progressive gel structure to a variety of oil and invert emulsion-based drilling fluids at neutral or acidic pH. The fluids are useful for drilling wellbores in subterranean formations without need for organophilic clays to suspend drill solids. At greater concentrations, metal cross-linked phosphate... Agent: Karen B. Tripp

20070078060 - Invert drilling fluids and methods of drilling boreholes: Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or having fragile gel behavior and providing superior oil mud rheology... Agent: Karen B. Tripp Attorney At Law

20070078061 - Invert drilling fluids and methods of drilling boreholes: Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or having fragile gel behavior and providing superior oil mud rheology... Agent: Karen B. Tripp Attorney At Law

20070078062 - Invert drilling fluids and methods of drilling boreholes: Methods for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid are disclosed, as well as compositions for use in such methods. The methods employ drilling fluids comprising fragile gels or having fragile gel behavior and providing superior oil mud rheology... Agent: Karen B. Tripp

20070078063 - Subterranean treatment fluids and methods of treating subterranean formations: Methods that include a method comprising: providing a subterranean treatment fluid comprising an aqueous fluid, a viscosifier, a fluid loss control additive, a bridging agent comprising a degradable polymer, and a solvent; placing the subterranean treatment fluid in at least a portion of a subterranean formation; allowing the solvent to... Agent: Halliburton Energy Services, Inc.

20070078064 - Treatment fluids and methods of forming degradable filter cakes and their use in subterranean formations: Presented herein are improved bridging agents comprising a degradable material, improved subterranean treatment fluids comprising such improved bridging agents, and methods of using such improved subterranean treatment fluids in subterranean formations. An example of a method presented is a method of drilling a well bore in a subterranean formation. Another... Agent: Halliburton Energy Services, Inc.