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7576039 Additive for drilling fluids  
Subject matter of the present invention is a drilling fluid additive based on sulfonated asphalt, which comprises a water soluble and anionic polymer component in quantities of 0.1 to 20 wt. %,...
7470419 Granules of powdery mineral and method for production of granules  
The present application relates to granules of powdery mineral particles produced by spray granulation of a liquid slurry comprising powdery minerals particles having particle size below 10 m, at...
7452417 Downhole servicing compositions having high thermal conductivities and methods of using the same  
A downhole servicing composition comprising from about 15 percent to about 80 percent by weight of a clay, and from about 10 percent to about 75 percent by weight of a carbon source is disclosed....
7351680 High performance water-based mud system  
A drilling fluid or mud additive having several components, including leonardite (humic acid); potassium acetate; partially hydrolyzed polyacrylamide (PHPA); polyanionic cellulose polymer (PAC);...
7198805 Method for producing humic acid salts  
Humic acid salts are produced, with a high output of useful products, by a liquid-phase oxidation of the mixture of an alkaline agent with a lignin-containing plant raw material having the total...
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...
7060660 Drilling fluid additive system containing talc and graphite  
A drilling fluid additive system is provided wherein the system comprises: a drilling fluid additive comprising talc, graphite and at least one carrier such as a glycol; and hydrophilic clay, a pH...
7056867 Drilling fluid additive system containing graphite and carrier  
A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing graphite with at least one carrier such as a polypropylene glycol or oil to create...
6852675 Nutrient source for marine organisms from drilling fluids additives  
A nutrient source for marine organisms comprising: drilling fluids containing organic contaminants; a solidification agent; a cell transport agent; and a cellulosic additive.
6825152 Method for creating dense drilling fluid additive and composition therefor  
A dense drilling fluid additive used to control lost circulation, fluid loss and/or seepage loss of drilling fluid during drilling operations is disclosed. Such additive is formed from ground base...
6809067 Composition for oil and gas drilling fluids with solidification agent, cell transport agent and cellulosic additive  
A composition for oil and gas drilling fluids containing organic contaminants comprising: a solidification agent; cell transport agent; a cellulosic additive; and wherein said composition comprises...
6806232 Composition of drilling fluids comprising ground elastomeric crumb rubber material and a method of decreasing seepage and whole mud loss using such composition  
Well-working fluid compositions containing certain processed inorganic, oil and water wettable ground elastomeric crumb rubber materials to decrease the seepage loss of various fluids to...
6734144 Solids-stabilized water-in-oil emulsion and method for using same  
A method for enhancing the stability of a solids-stabilized water-in-oil emulsion by pretreating the oil prior to emulsification. The pretreatment step can be accomplished by adding dilute acid to...
6309455 Stable suspension of hydrocolloids and superplasticizer  
The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer solution such as sulfonated naphthalene, sulfonated...
5656070 Corrosion inhibiting compositions containing plant derived catechol complexes  
Corrosion inhibiting composition include the use of certain plant derived catechol complexes in aqueous based compositions, such as process water, and other aqueous and non-aqueous solvent based...
5646092 Pretreated clays, their preparation and use in formulation drilling muds not aggressive to layer clays  
Disclosed is a process for preparing aqueous, clay-based muds, not aggressive to layer clays, which process comprises a first step in which clay is treated with an aqueous solution containing the...
5602083 Use of sized salts as bridging agent for oil based fluids  
An oil-based fluid system has been discovered using a distribution of salt particle sizes, an oil or water/oil emulsion, a suspending agent for suspending the salt particles in the oil and a...
5399548 Blended drilling fluid thinner  
A blended additive composition, which is useful for thinning aqueous drilling fluids, is disclosed. The composition includes a first component selected from the group including: a modified tannin,...
5149370 Well cement compositions having improved properties and methods  
Cement compositions which have improved properties such as increased stability, reduced settling tendencies, enhanced fluid loss properties and the like and methods of using such cement...
5124312 Drilling fluid thinners  
The present invention relates to drilling fluid additives, more particularly to superior drilling fluid thinners or polyfunctional drilling fluid conditioners, and methods of their preparation. The...
RE33856 Terpolymer compositions for aqueous drilling fluids  
A method of improving high temperature fluid loss and rheology stabilization of high calcium brine clay-containing oil well drilling fluids which comprises adding thereto a stabilizing amount of a...
RE33855 Terpolymer composition for aqueous drilling fluids  
A method of improving high temperature fluid loss and rheology stabilization of high calcium brine clay-containing oil well drilling fluids which comprises adding thereto a stabilizing amount of a...
4990268 Mixed metal hydroxides for thickening water or hydrophylic fluids  
Novel monodispersed crystalline mixed metal layered hydroxide compounds of the general formula are prepared: Li m D d T(OH) (m+2d+3+na) A a n , where m is an amount from zero to 1; D is a...
4859362 Sulfomethylated lignin amines  
Surface active agents are prepared from by-products of papermaking. According to this method, lignin, modified lignin, and mixtures thereof are reacted with a polyamine to produce an amine...
4704214 Drilling fluid  
In an aqueous drilling fluid, an improved thinning effect is obtained by adding a first agent comprising a mixture of a sulfoalkylated tannin or polyvalent metal complex thereof with a lignite,...
4652606 Water-based drilling fluids having enhanced fluid loss control  
A water based drilling fluid and process for using the same comprising a mixture of water and a polymer complex, wherein the polymer complex is the reaction product of a dispersant selected from...
4637882 Polyampholytes - high temperature viscosifiers for high ionic strength drilling fluids  
A new family of terpolymers based on V-vinyl-2-pyrrolidone/sodium styrene sulfonate/methacrylamidopropyltrimethylammonium chloride has been found to be an improved viscosity control additive for...
4597878 Polyphenolic acid adducts  
The invention provides novel humic acid derivatives obtained by reacting humic acid-containing materials with a noval amide mixture comprising a polyamide and an amido-amine containing one free...
4594168 Derivatives of lignosulfonic acid  
Process of preparation of lignosulfonic acid derivatives, whereby, in a pressure and corrosion resistant closed container, the following steps are carried out: heating for 1 minute to 30...
4572790 Lubrication additive for aqueous drilling fluids  
Disclosed are novel aqueous drilling fluid compositions containing a lubrication additive and a method of drilling wells wherein the underground formation is contacted with such drilling fluid...
4569799 Process for making organophilic humate derivatives  
The invention provides a novel process of preparing organophilic humate derivatives wherein: an aqueous solution of a humic acid-containing material is prepared with an alkali metal or ammonium...
4561985 Hec-bentonite compatible blends  
Drilling fluids, both fresh and saline, containing additives and compositions, predominantly nonionic in nature, for the beneficiation of bentonite in such drilling slurries are described. The...
4554080 Aqueous drilling fluids containing alkenyl succinic anhydrides  
Disclosed are novel aqueous drilling fluid compositions containing a lubrication additive and a method of drilling wells wherein the underground formation is contacted with such drilling fluid...
4540496 Intramolecular polymer complexes - viscosifiers for high ionic strength drilling fluids  
A new family of terpolymers based on acrylamide/sodium styrene sulfonate/methacrylamidopropyltrimethylammonium chloride has been found to be an improved viscosity control additive for water-based...
4521578 Composition and method of preparation of novel aqueous drilling fluid additives  
The present invention relates to new compositions and methods of preparation of deflocculents for water-base mud additives. The disclosed materials are low molecular weight terpolymers and graft...
4500436 Saltwater and hard water bentonite mud  
A seawater/saltwater or hard water bentonite mud for use in drilling, and process for preparing same, comprising sequentially adding to seawater, to saltwater of a chloride concentration up to...
4478727 Sodium styrene sulfonate-co-sodium-n-(4-sulfophenyl)-maleimide- an improved viscosity control additive  
A new copolymer of sodium styrene sulfonate-co-sodium-N-(4-sulfophenyl)-maleimidehas been found to be an improved viscosity control additive for water-based drilling muds.
4428843 Well working compositions, method of decreasing the seepage loss from such compositions, and additive therefor  
The invention provides well-working fluid compositions containing certain hydrophobic organophilic water wettable fibrous materials to decrease the seepage loss of the fluid to subterranean...
4421655 Organophilic polyphenolic acid additives for well-working compositions  
The invention provides novel organophilic derivatives of polyphenolic compounds which are readily soluble and/or dispersible in hydrocarbons to prepare oil base well-working compositions having a...
4420405 Water based drilling mud additive  
A water based fluid additive useful in drilling mud used during drilling of an oil or gas well is disclosed, produced by reacting water at temperatures between 210°-280° F. with a mixture...
4404108 Additive for drilling fluids  
A water-based gas or oil well drilling fluid comprising an aqueous clay dispersion containing as a thinner and water loss control agent, the essentially water-soluble product obtained by heating...
4374738 Drilling fluid composition  
A water-based drilling fluid composition is described which comprises an aqueous dispersion of a clay material containing an effective dispersing amount of a modified lignosulfonate which is...
4233162 Oil well fluids and dispersants  
The invention of this application is a dispersant system with various embodiments and subcombinations with exceptional dispersions including colloidal suspensions, aqueous hydrocarbon emulsions and...
4140639 Clay-free wellbore fluid  
A clay-free, i.e., non-argillaceous brine wellbore fluid having unstructured viscosity and improved water loss properties from an additive composition present in an amount of 0.1 to 3 weight %...
4110231 Stabilized aqueous gels and uses thereof  
New improved aqueous gels, and methods of using same in contacting subterranean formations, are provided. Said gels are prepared by gelling an aqueous brine having incorporated therein a...
4025443 Clay-free wellbore fluid  
A clay-free, i.e., non-argillaceous wellbore fluid, having unstructured viscosity is obtained by combining water with an additive composition comprising hydroxy alkyl guar gum and at least 10...
3985659 Drilling fluid composition  
An aqueous drilling fluid comprising bentonite, or subbentonite and a water-soluble copolymer of lignosulfonate and a polyacrylate in a sufficient amount to increase the yield of the clay.
3956140 Drilling fluids  
Well drilling, workover and completion fluids containing various water soluble condensation products of phenolic materials, formaldehyde and sulfite salts. Such condensation products may be further...
3953335 Magnesia stabilized additives for non-clay wellbore fluids  
The additives are employed in non-clay wellbore fluids, as for example, in clear water, brines or emulsions used for drilling, well completion, workover, fracturing, and such stimulation operations...
3896031 Preparation of colloidal solid suspensions in aqueous solutions  
The present invention relates to the preparation of colloidal suspensions of solids in aqueous solutions, e.g., water-base drilling fluids, in the absence of oil. Colloidal solid materials such as...
Matches 1 - 50 out of 98 1 2 >