| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507206000 | Organic component is lignin or humate or derivative thereof (e.g., tannin, quebracho extract, etc.) | 11 |
| 20100331222 | PROCESS FOR PRODUCING CELLULOSE BEADS FROM SOLUTIONS OF CELLULOSE IN IONIC LIQUID - Process for producing cellulose beads or lignocellulose beads, wherein cellulose or lignocellulose is dissolved in a solvent which comprises more than 50% by weight of the symmetrical imidazolium compound of the formula I below | 12-30-2010 |
| 20120231980 | WELL FLUID AND METHOD OF SERVICING A WELL - A well servicing fluid for reducing polymer degradation is disclosed. The well servicing fluid is formulated with components comprising: at least one free radical scavenger, with the proviso that the free radical scavenger is not erythorbate, lignin or lignin derivatives; at least one polymer and an aqueous based solvent. Methods for servicing a well employing well servicing fluids of the present disclosure are also disclosed. | 09-13-2012 |
| 20130324444 | SYSTEM AND METHOD FOR DELIVERING TREATMENT FLUID - The current application discloses methods and systems for preparing a wellbore treatment fluid precursor consolidated as one or more solid bodies; delivering the solid bodies to a logistics facility; and preparing a wellbore treatment fluid from the solid bodies. In some embodiments, the wellbore treatment fluid is a fracturing fluid for conducting a hydraulic fracturing operation on a subterranean formation penetrated by a wellbore. | 12-05-2013 |
| 20150368546 | LIGNIN-CONTAINING POLYMERS AND COMPOSITIONS INCLUDING LIGNIN-CONTAINING POLYMERS - A composition includes an agent formed by grafting at least a first polymer with lignin and a component other than the agent, lignin or the at least a first polymer, wherein lignin has an affinity for the component. A method of dispersing a component in a matrix includes adding an agent to the matrix. The agent is formed by grafting at least a first polymer with lignin. The first polymer has an affinity for the matrix. Lignin has an affinity for the component. The component is other than the agent, lignin or the at least a first polymer. The method for includes contacting the matrix with the component. | 12-24-2015 |
| 507207000 | Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.) | 7 |
| 20090099047 | Fusing Materials For Prevention of Lost Circulation - A method is given for reducing fluid loss in downhole operations such as drilling and completion. A composition containing a fusing solid is injected into the fluid loss flow path; the fusing solid fuses at formation temperature when the injection pressure is released and the formation matrix surfaces forming the flow path close on the composition. The fusing solid is gilsonite, or a similar material, or resin coated particles. The composition may optionally contain one or more of fibers, flakes, an activator, and a dispersant. | 04-16-2009 |
| 20090149352 | Viscoelastic Surfactant Fluid Systems Comprising An Aromatic Sulfonate and Methods of Using Same - Methods of improving shear recovery time of viscoelastic surfactant fluid systems are described, one method involving providing a viscoelastic surfactant fluid system comprising a major portion of a surfactant and a rheology enhancer in a concentration sufficient to shorten shear recovery time of the fluid system compared to shear recovery time of the fluid system absent the rheology enhancer, the rheology enhancer selected from aromatic sulfonates having a molecular weight of at least 500; and injecting the fluid system down a well. The rheology enhancer may be a lignosulfonate derived from wood pulping. Viscoelastic surfactant systems including the rheology enhancer are also described. | 06-11-2009 |
| 20100197528 | DEGRADABLE GELS IN ZONAL ISOLATION APPLICATIONS - A method of treating a formation that includes emplacing an oxidizing breaker fluid into a region of the formation occupied by a gel; and allowing sufficient time for the oxidizing breaker fluid to degrade the gel is disclosed. | 08-05-2010 |
| 20130345100 | SPHERICAL PELLETS CONTAINING COMMON CLAY PARTICULATE MATERIAL USEFUL AS A PROPPANT IN HYDRAULIC FRACTURING OF OIL AND GAS WELLS - A ceramic propping agent, in the form of a spherical pellet, and containing common mineral particulate. The desired propping agent is defined as a particulate ceramic made from raw materials which may be comprised of about: 10%-90% parts by weight of a naturally occurring mineral particulate, 30%-70% parts by weight aluminosilicate network modifier, 0.25-20% parts by weight strength enhancer, and at least one part, typically less than 10% by weight, binder. For use in oil and/or natural gas wells as a hydraulic fracturing proppant. | 12-26-2013 |
| 20150361327 | HIGH-TEMPERATURE RESISTANT NANO COMPOSITE MINING ADDITIVE FOR MINING HEAVY OIL AND SUPER HEAVY OIL AND PREPARATION PROCESS THEREOF - Disclosed is a high-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil, which is prepared from 3-8 wt. % of a modified nano-inorganic additive, 3-8 wt. % of petroleum sulfonate, 10-40 wt. % of a viscosity depressant, 5-15 wt. % of an emulsifier, 2-10 wt. % of a surface wetting agent, 2-10 wt. % of a penetrant, 5-10 wt. % of a polymer modifier, and 1-8 wt. % of a catalyst, with a balance being water. Also disclosed is a preparation process for the above-mentioned high-temperature resistant nano composite mining additive for mining heavy oil and super heavy oil. The mining additive of the present invention has the advantages of a good high-temperature resistant performance, and an excellent emulsification performance and anti-salt performance, thereby significantly improving the efficiency of production and reducing the cost of mining. | 12-17-2015 |
| 20160060507 | METHOD FOR REUSING PRODUCED WATER FOR HYDRAULIC FRACTURING - A method comprises obtaining or providing a treatment fluid comprising a gellable agent; an aqueous carrier fluid; at least one polymer comprising one or more ortho-dioxy arylene units; a crosslinking agent; and placing the treatment fluid in a subterranean formation. In some embodiments, the aqueous carrier fluid comprises produced and/or flowback water. In some embodiments, the aqueous carrier fluid comprises high total dissolved solids, including multivalent salts or both monovalent and multivalent salts. | 03-03-2016 |
| 507208000 | Includes metal compound other than an alkali or alkaline earth metal compound (e.g., Al, Cr, Fe, Mn, Cu, etc.) | 1 |
| 20080318811 | Versatile Additives For Well Cementing Applications - The present invention provides a versatile additive for improving the properties of a cement slurry made with portland cement and to be utilized in well cementing, said versatile additive comprising type of silicates and/or borates that inhibit gelation occurring with the interstitial phase. The additive of the present invention improves significantly the rheology (i.e., strong dispersing effect) and can even overcome severe gelation problems. At temperature above about 88° C. (190° F.) the additive acts as retarder aid, enabling to reduce considerably the concentration of retarder required to achieve a given thickening time. | 12-25-2008 |
