Patent application number | Description | Published |
20080227671 | LOW TOXICITY SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: | 09-18-2008 |
20090175688 | SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A method of using a water-base wellbore fluid in subterranean wells that penetrate through a subterranean formation containing a shale which swells in the presence of water. The well bore fluid includes, an aqueous based continuous phase, and a shale hydration inhibition agent. One illustrative shale hydration inhibition agent is preferably the reaction product of a hydrogenation reaction of the product of the reaction of an aromatic amine with an aldehyde, preferably formaldehyde. Alternatively the shale hydration inhibition agent may be the reaction product of a hydrogenation reaction of the product of the reaction of aniline and formaldehyde. In one illustrative embodiment, the shale hydration inhibition agent is selected from the class of compounds known as polycycloaliphatic amines. Further the shale hydration inhibition agent may be present in the form of a free-base or in the form of an acid salt of the disclosed amine compounds. The shale hydration inhibition agent is present in sufficient concentration to substantially reduce the swelling of shale drilling cuttings upon contact with the fluid. | 07-09-2009 |
20100144561 | SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A water-base fluid for use in drilling, cementing, workover, fracturing and abandonment of subterranean wells through a formation containing a shale which swells in the presence of water. In one illustrative embodiment, the drilling fluid includes, an aqueous based continuous phase, a weighting agent, and a shale hydration inhibition agent. The shale hydration inhibition agent should have the general formula (I) in which R is independently selected from alkyls and hydroxyl alkyls comprising 1 to 15 carbon atoms, and X is an anion. The shale hydration inhibition agent is present in sufficient concentration to substantially reduce the swelling of shale drilling cuttings upon contact with the drilling fluid. The drilling fluid may be formulated to include a wide variety of components of aqueous based drilling fluids, such as weighting agents, fluid loss control agents, suspending agents, viscosifying agents, rheology control agents, as well as other compounds and materials known to one of skill in the art. The fluids may also be used in the disposal by reinjection of drilling cutting into a selected subterranean disposal formation. | 06-10-2010 |
20100300979 | DEWATERING OF SILICATE WELLBORE FLUIDS - A method of treating silicate-based wellbore fluids that includes flocculating at least a portion of contaminants contained in a silicate-based wellbore fluid out of the fluid phase; and separating the flocculated contaminants from the fluid phase. Methods of recycling silicate-based fluids, methods of disposing used silicate-based fluid, and methods of disposing of wellbore fluid waste are also disclosed. | 12-02-2010 |
20110053809 | DEGRADABLE NON-AQUEOUS GEL SYSTEMS - A method of treating a formation that includes exposing a region of the formation occupied by a hydrolysable gel to a hydrolyzing agent; and allowing sufficient time for the hydrolyzing agent to hydrolyze the gel. Various methods may also include the use of a swelling agent to allow for expansion of the gel. | 03-03-2011 |
20110061866 | LOW CONDUCTIVITY WATER BASED DRILLING FLUID - A low electrical conductivity water-based wellbore fluid for use in drilling wells through a formation containing a clay which swells in the presence of water, said wellbore fluid that includes an aqueous base fluid; and a polymeric non-ionic tertiary amine is disclosed. Methods of using such fluids are also disclosed. | 03-17-2011 |
20110094747 | METHOD OF REMEDIATING BIT BALLING USING OXIDIZING AGENTS - A method of removing clay compounded on drilling equipment in a well that includes contacting the drilling equipment with a treatment fluid comprising an oxidizing agent. Methods disclosed also relate to drilling a wellbore though a clay-containing formation that includes drilling through the formation with a water-containing drilling fluid; reducing applied weight-on-bit when bit balling detected; emplacing a treatment fluid comprising an oxidizing agent to disrupt clay compounded on drilling equipment; and increasing weight-on-bit to continue drilling through the formation | 04-28-2011 |
20110100628 | METHODS OF DELAYING THE CURING OF MOISTURE SENSITIVE CURABLE ELASTOMERS - A method of treating a formation that includes injecting gelling components curable by a moisture cure into a selected region of the formation; and controlling the onset of curing of the gelling components by contacting the gelling components with a drying agent is disclosed. | 05-05-2011 |
20110160099 | INVERT EMULSION WELLBORE FLUIDS AND METHOD FOR REDUCING TOXICITY THEREOF - A method for reducing the toxicity of an invert emulsion wellbore fluid is disclosed. The method comprises forming an invert emulsion wellbore fluid comprising an oleaginous continuous phase, an aqueous discontinuous phase, and an emulsifying fluid, wherein the emulsifying fluid comprises a nitrogen-containing emulsifying agent and an alkalinity agent, and wherein the invert emulsion wellbore fluid produces an LC50 (SSP) of at least 30,000 parts per million at 3000° F. | 06-30-2011 |
20110166047 | NITROGEN-FREE INVERT EMULSION WELLBORE FLUID - An invert emulsion wellbore fluid comprising an oleaginous continuous phase, an aqueous discontinuous phase, and an emulsifying fluid, wherein the emulsifying fluid comprises an aliphatic alcohol and a glycoside, is disclosed. | 07-07-2011 |
20110190171 | LOW TOXICITY SHALE HYDRATION INHIBITION AGENT AND METHOD OF USE - A low toxicity composition and method of reducing the swelling of clay in well comprising circulating in the well a water-based fluid comprising a functionally effective concentration of the additive formed from the following reaction of a tertiary amine of the following general formula: | 08-04-2011 |
20110278006 | DEFLUIDIZING LOST CIRCULATION PILLS - A slurry for treating a wellbore that includes a base fluid; at least one fibrous structure; and a plurality of calcium silicate particles is disclosed. Methods of reducing loss of wellbore fluid in a wellbore to a formation using an LCM pill having calcium silicate particles therein is also disclosed. | 11-17-2011 |
20120067575 | METHODS OF USING INVERT EMULSION FLUIDS WITH HIGH INTERNAL PHASE CONCENTRATION - In a method of gravel packing a wellbore in a subterranean formation, the wellbore comprising a cased section and an uncased section, the method may include pumping into the wellbore a gravel pack composition comprising gravel and a carrier fluid comprising an invert emulsion fluid, where the invert emulsion fluid may comprise: an oleaginous external phase; a non-oleaginous internal phase, wherein a ratio of the oleaginous external phase and non-oleaginous internal phase is less than 50:50 and an emulsifier stabilizing the oleaginous external phase and the non-oleaginous internal phase. | 03-22-2012 |
20120186880 | Invert Emulsion Fluids With High Internal Phase Concentration - An invert emulsion wellbore fluid may include an oleaginous external phase; a non-oleaginous internal phase, wherein a ratio of the oleaginous external phase and non-oleaginous internal phase is less than 50:50; and an emulsifier stabilizing the oleaginous external phase and the non-oleaginous internal phase, wherein an average diameter of the non-oleaginous internal phase ranges from 0.5 to 5 microns. | 07-26-2012 |
20130264121 | GRAPHENE-BASED MATERIAL FOR SHALE STABILIZATION AND METHOD OF USE - Methods and compositions for use in drilling a wellbore into an earthen formation that includes the use of a graphene-based material, where the graphene-based material may be at least one of graphene, graphene oxide, chemically converted graphene, and derivatized graphite oxide are shown and described. In certain examples, the methods and compositions reduce permeability damage and/or stabilize shales. | 10-10-2013 |
20130331302 | FLUID LOSS ADDITIVE FOR OIL-BASED MUDS - A composition that includes a product resulting from a condensation reaction of quebracho with at least one organophilic species that includes a reactive amine is disclosed. | 12-12-2013 |
20140151128 | LOW CONDUCTIVITY WATER BASED WELLBORE FLUID - A low electrical conductivity water-based wellbore fluid for use in drilling wells through a formation containing a clay which swells in the presence of water, said wellbore fluid that includes an aqueous base fluid; and a polymeric non-ionic tertiary amine is disclosed. Methods of using such fluids are also disclosed. | 06-05-2014 |
20140367091 | WELLBORE FLUIDS INCORPORATING MAGNETIC CARBON NANORIBBONS AND MAGNETIC FUNCTIONALIZED CARBON NANORIBBONS AND METHODS OF USING THE SAME - A wellbore fluid may include an oleaginous continuous phase, one or more magnetic carbon nanoribbons, and at least one weighting agent. A method of performing wellbore operations may include circulating a wellbore fluid comprising a magnetic carbon nanoribbon composition and a base fluid through a wellbore. A method for electrical logging of a subterranean well may include placing into the subterranean well a logging medium, wherein the logging medium comprises a non-aqueous fluid and one or more magnetic carbon nanoribbons, wherein the one or more magnetic carbon nanoribbons are present in a concentration so as to permit the electrical logging of the subterranean well; and acquiring an electrical log of the subterranean well. | 12-18-2014 |