Earth boring, well treating, and oil field chemistry inventions 10/09

20090247428 - Wellbore fluid: There is provided a wellbore fluid having a continuous aqueous phase, and comprising at least one polymer which contains both hydrophilic units and hydrophobic units, at least some of said hydrophilic units containing sulfonate groups, and less than 50% by weight of said hydrophilic units comprising —CH2.CH2.O— units; and at... Agent: Nixon & Vanderhye, Pc

20090247429 - Shale hydration inhibition agent(s) and method of use: A water-based drilling fluid and method of using same are presented in this disclosure, which fluid is used in drilling wells through a formation containing a shale that swells in the presence of water. The drilling fluid comprises an aqueous based continuous phase; a weighting material; and a shale hydration... Agent: Conley Rose, P.c. David A. Rose

20090247430 - Elongated particle breakers in low ph fracturing fluids: A method is given for the delayed breaking of a low pH fracturing fluid with acid-generating degradable elongated particles as a breaker for borate-crosslinked polymers. The shape, size, chemical composition and concentration of the elongated particles are used to control the period of delay before the polymer viscosity is broken.... Agent: Schlumberger Technology Corporation David Cate

20090247431 - Biodegradable anionic acid corrosion inhibitor comprising sarcosines: An acid treatment composition is provided including a corrosion inhibitor and an optional corrosion inhibitor intensifier in an acidic solution. More specifically, the composition includes an anionic surfactant. Methods for treating wells with these acid treatment compositions are also provided that help control corrosion of the steel used in the... Agent: Howrey LLP

20090247432 - Deep eutectic solvents and applications: A method of solubilizing/removing cellulose or chemically-modified cellulosic polymers utilized in subterranean drilling operations such as fracturing. The method involves introducing a deep eutectic solvent (DES) into a subterranean region. Deep eutectic solvents useful as cellulose solvents include quaternary ammonium compounds, including choline chloride and chlorcholine chloride, reacted with a... Agent: Conley Rose, P.c. David A. Rose