U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 6125480

Vehicle mounted toilet seat

An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 507/108 - Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.)


Subclass of Class 507 - Earth boring, well treating, and oil field chemistry
Definition: Composition wherein the lignin or humate component contains
No. of patents: 63
Last issue date: 04/01/2008


1    
NumberTitleIssue Date
7351680High 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); sulfonated asphalt; sulfoalkylated tannin; polystyrene maleic anhydride...
04/01/2008
7312183Shale 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 shale which swells in the presence of water. In one illustrative embodiment, the drilling fluid is composed of an aqueous bas...
12/25/2007
7268100Shale inhibition additive for oil/gas down hole fluids and methods for making and using same
An under-balanced drilling fluid additive is disclosed which reduces reactive shale and/or clay swelling during under-balanced drilling operations, where the additive includes an effective amount of a choline salt. A method for under-balanced drilling is also disclo...
09/11/2007
7256159Fluid loss reducer for high temperature high pressure water based-mud application
The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer. The subject invention further r...
08/14/2007
7198805Method 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 content of dry substances of 12–20 %, said oxidation being carried ou...
04/03/2007
7147056Subterranean fluids and methods of using these fluids in subterranean formations
The present invention provides subterranean fluids comprising a hydraulic cement in an invert emulsion, and methods of using such fluids in subterranean well cementing operations. The fluids comprise a hydraulic cement and an invert emulsion of oil, water, and a sur...
12/12/2006
7067004Grout 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 cm/s. Such grout slurries comprise water and a grout composition that is...
06/27/2006
7060660Drilling 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 controller, a fluid loss controller, and at least one dispersant....
06/13/2006
7056867Drilling 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 a suspended mixture, and allowing the surface of the graphite to be p...
06/06/2006
6914081Rheology modified compositions and modification agents
A method of making a rheology modified aqueous composition, particularly useful for drilling, milling and mining applications, is disclosed. The method includes admixing, with a clay and water, a material or materials whose constituents substantially conform to the ...
07/05/2005
6887832Method of formulating and using a drilling mud with fragile gels
A method for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid is disclosed, as well as compositions for use in such method. The method employs a drilling fluid comprising a fragile gel or...
05/03/2005
6852675Nutrient 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. ...
02/08/2005
6825152Method 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 materials, such as inorganic matter, and may be used to manage the rh...
11/30/2004
6809067Composition 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 enough solidification agent to enable the solidification agent to el...
10/26/2004
6806232Composition 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 subterranean formations in which these well working fluids are required and uti...
10/19/2004
6797675Composition for oil and gas drilling fluids with solidification agent and cellulose additive
A composition and method for treating oil and gas drilling fluids containing organic contaminants comprising: a solidification agent and a cellulosic additive; and wherein the composition comprises enough solidification agent to enable the solidification agent to el...
09/28/2004
6737384Drilling fluid additive system containing talc and cellulose
A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing colloidal solids such as talc with a carrier such as oils and glycols or talc with cellulose to create a suspended mixture to thereby allow the colloida...
05/18/2004
6734145Drilling fluid additive system containing talc & carrier
A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing colloidal solids such as talc with a carrier such as oils or glycols to create a suspended mixture to thereby allow the colloidal solids to be pre-wet o...
05/11/2004
6734144Solids-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 the oil, adding a lignosulfonate additive to the oil, sulfonating the...
05/11/2004
6309455Stable 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 melamine, modified lignosulfate, their derivatives and mixture...
10/30/2001
6106603Stable 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 melamine, modified lignosulfate, their derivatives and solutio...
08/22/2000
5656070Corrosion 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 coating compositions. The compositions have corrosion inhibi...
08/12/1997
5646092Pretreated 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 necessary amount of dispersant to fluidify the mud; a secon...
07/08/1997
5602083Use 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 filtration control agent. It is important that the salt particle...
02/11/1997
5399548Blended 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, a modified lignite and sodium lignosulfonate; a second com...
03/21/1995
5228524Fluid system for controlling fluid losses during hydrocarbon recovery operations
A fluid system has been discovered using graded calcium carbonate particle sizes and a modified lignosulfonate. Optionally, a thixotropic polymer such as a welan or xanthum gum polymer is used to keep the CaCO3 and lignosulfonate in suspension....
07/20/1993
5149370Well 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 compositions are provided. The cement compositions are comprised of w...
09/22/1992
5124312Drilling 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 thinners comprise chelates and complexes prepared by reac...
06/23/1992
4990268Mixed metal hydroxides for thickening water or hydrophylic fluids
Novel monodispersed crystalline mixed metal layered hydroxide compounds of the general formula are prepared: Lim Dd T(OH).sub.(m+2d+3+na) Aan, where m is an amount from zero to 1; D is a divalent metal; d is the amo...
02/05/1991
4938803Vinyl grafted lignite fluid loss additives
A vinyl grafted lignite fluid loss additive comprising a lignite grafted with at least one vinyl monomer selected from the group consisting of: dimethylaminopropyl methacrylamide, methacrylamido propyltrimethyl ammonium chloride, N-vinylformamide, N-vinyl...
07/03/1990
4859362Sulfomethylated 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 condensate, and this amine condensate is reacted with a bisulfite ...
08/22/1989
4737295Organophilic polyphenolic acid adducts
Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are prepared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegeta...
04/12/1988
4704214Drilling 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, optionally in combination with a second agent comprising a me...
11/03/1987
4678591Terpolymer 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 water-soluble terpolymer composition comprising: said comp...
07/07/1987
4652606Water-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 the group consisting of lignite, sulfonated lignite, lignosu...
03/24/1987
4650593Water-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 the group consisting of lignite, sulfonated lignite, lignosu...
03/17/1987
4637882Polyampholytes - 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 water-based drilling muds. The resultant muds display good v...
01/20/1987
4597878Polyphenolic 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 amino group per molecule. The novel amide mixture is obtained...
07/01/1986
4594168Derivatives 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 minutes, at temperatures within a range of 115° C. to 160° C., a m...
06/10/1986
4572790Lubrication 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 compositions. The lubrication additive is a polyolefin in aque...
02/25/1986
1    
 
Sign InRegister
Username  
Password   
forgot password?