| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507101000 | Contains enzyme or living microorganism | 11 |
| 20090163385 | Well Treatment Process - The invention provides a method for the treatment of a hydrocarbon well which method comprises administering, down said well, polymeric particles having covalently bound to a polymeric component thereof a well treatment chemical or a precursor thereof, wherein the particles contain covalent bonds scissile in an aqueous environment to release or expose said chemical or precursor. | 06-25-2009 |
| 20090176665 | Self-Degrading Fibers and Associated Methods of Use and Manufacture - This invention relates to the use of degradable fibers, and more particularly, to self-degrading fibers and their associated methods of use and manufacture. In one embodiment, the present invention provides a self degrading fiber comprising: an outer shell, and a core liquid. | 07-09-2009 |
| 20100069266 | PROCESS FOR THE ENZYMATIC REMOVAL OF FILTER-CAKES PRODUCED BY WATER-BASED DRILLING AND COMPLETION FLUIDS - The invention relates to a process for the solubilization of material containing scleroglucan and/or xanthan gum which comprises putting the above material in contact with an aqueous solution comprising an enzyme selected from a cellulase from | 03-18-2010 |
| 20110166046 | UV Light Treatment Methods and System - Of the many methods provided herein, one provided is a method comprising: providing a treatment fluid having a first microorganism count as a result of the presence of at least a plurality of microorganisms in the fluid; adding an attenuating agent to the treatment fluid; placing the treatment fluid in a UV light treatment system comprising a UV light source such that a plurality of free radicals are generated by the attenuating agent; allowing the free radicals to interact with the microorganisms in the fluid so as to reduce the microorganism count of the treatment fluid to a second microorganism count; and placing the treatment fluid having the second microorganism count into a subterranean formation. | 07-07-2011 |
| 20120264655 | THERMO-RESPONSIVE HYDROGELS AND THERMO-RESPONSIVE POLYMER SOLUTIONS - Polymers and hydrogels that are provided that are thermo-responsive, such as thermo-thickening polymers and hydrogels, as well as aqueous solutions whose rheological properties may be modified by including the polymers, hydrogels, or combinations thereof. Such thermo-responsive polymers or hydrogels, or aqueous solutions including the polymers or hydrogels, may be used as additives to reservoir drilling fluids (RDF's), fluid loss control (FLC) pills, hydraulic fracturing fluids (frac fluids), and lost circulation (LC) pills. The polymers or hydrogels may impart a rheological profile that is generally flat with respect to variations in the shear-rate and temperature environment in which drilling fluids, RDF's, FLC pills, frac fluids, and LC pills are deployed. Embodiments include the process of producing a high performance filtercake through the application of thermo-responsive hydrogels and/or thermo-responsive polymer solutions. | 10-18-2012 |
| 20130035262 | Integrated Computational Element Analytical Methods for Microorganisms Treated with a Pulsed Light Source - Determining the microorganism load of a substance may be conducted readily using one or more integrated computational elements. By determining a substance's microorganism load, the substance's suitability for a variety of applications may be ascertained. Methods for determining the microorganism load of a substance using one or more integrated computational elements can comprise: providing a substance comprising a plurality of viable microorganisms; exposing the substance to a pulsed light source for a sufficient length of time to form at least some non-viable microorganisms; and determining a microorganism load of the substance using one or more integrated computational elements. | 02-07-2013 |
| 20140148366 | HIGH-PRESSURE/HIGH-TEMPERATURE SOLIDS-FREE FLUID SYSTEM FOR DRILLING, COMPLETING AND REPAIRING PETROLEUM AND GAS WELLS - The present invention relates to the composition, preparation method and use of a solids-free drilling fluid system formulated with a mixture of divalent heavy brines, which is resistant to high pressures and high temperatures. The system has the special feature that it significantly reduces productive-formation permeability damage as it uses mixtures of different salts of water-soluble divalent metals to provide the features of density, polymers and special additives to provide the system with the physicochemical properties that any fluid for drilling, completing and repairing wells requires in order to fulfill the functions thereof and to provide heat resistance up to 200° C. A main feature of the present invention is that the composition that embeds the drilling/completing/repairing of oil wells fluid contains synthetic polymers and biopolymers that do not require large amounts of time, high shear speeds or heating for hydration thereof in divalent metal salt derived simple or binary brines. | 05-29-2014 |
| 20140256600 | Oleaginous Microbial Lubricants - Provided are drilling fluids having delay-released lubrication, the drilling fluids comprising a drilling mud and an oleaginous microbial cell, methods of using and making such drilling fluids, and drilling rigs comprising such drilling fluids. Also provided are lubricants comprising an oleaginous microbial cell. Uses for the lubricants include metal working and extreme pressure applications. | 09-11-2014 |
| 20150368540 | DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS - This disclosure provides drilling fluids and additives as well as fracturing fluids and additives that contain cellulose nanofibers and/or cellulose nanocrystals. In some embodiments, hydrophobic nanocellulose is provided which can be incorporated into oil-based fluids and additives. These water-based or oil-based fluids and additives may further include lignosulfonates and other biomass-derived components. Also, these water-based or oil-based fluids and additives may further include enzymes. The drilling and fracturing fluids and additives described herein may be produced using the AVAP® process technology to produce a nanocellulose precursor, followed by low-energy refining to produce nanocellulose for incorporation into a variety of drilling and fracturing fluids and additives. | 12-24-2015 |
| 20160002521 | LUBRICANTS AND WELLBORE FLUIDS - Provided are wellbore fluids comprising an oleaginous microbial cell and methods of using and making such fluids. | 01-07-2016 |
| 20170233628 | ENZYME DESTABILIZERS FOR DESTABILIZING ENZYMES PRODUCING SULFUR CONTAINING COMPOUNDS IN DOWNHOLE FLUIDS | 08-17-2017 |
