| Patent Number |
Title Of Patent |
Date Issued |
| RE40197 |
Drill bit having an improved seal and lubrication method using same |
April 1, 2008 |
| A drill bit (100) for drilling a wellbore that traverses subterranean formations includes a drill bit body (106) having a plurality of journal pins (112), each having a bearing surface (128), and a rotary cutter (104) rotatably mounted on each journal pin (112), each rotary cutter (1 |
| RE40067 |
Downhole equipment tools and assembly procedures for the drilling, tie-in and completion of vert |
February 19, 2008 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sa |
| RE39209 |
Production fluid control device and method for oil and/or gas wells |
August 1, 2006 |
| A device and method for selectively controlling the flow of production fluid through a tubing string in an oil and gas well according to which a housing is connected to a tubing string for insertion into the well, and well fluid is passed from the ground surface into the housing. The |
| RE38642 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
November 2, 2004 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| RE38636 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
October 26, 2004 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR with WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| RE38616 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
October 12, 2004 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| RE37867 |
Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of ver |
October 8, 2002 |
| Single horizontal wells drilled through heterogeneous reservoirs are capable of greater oil productivity than vertical wells, often with lower produced GOR and WOR. Multiple drainholes tied-in to a vertical cased well are even more beneficial. Completion of such drainholes in many sandy |
| H2232 |
Methods for testing for bioaccumulation |
September 1, 2009 |
| Methods comprising: providing a test substance, providing two solvents that are substantially immiscible, introducing a known amount of the test substance and known amounts of the two solvents into a single vessel to create a pre-equilibrium sample, adjusting the concentration of the tes |
| H2225 |
Method for testing for bioaccumulation |
October 7, 2008 |
| For use in estimating or predicting bioaccumulation of a chemical analyte, even a surfactant, log P.sub.ow values for the analyte may be determined by calculating the log of the ratio of the concentrations of the analyte in n-octanol and in water, equilibrated using a slow-stir method. I |
| H2216 |
Method for testing for bioaccumulation |
May 6, 2008 |
| For use in estimating or predicting bioaccumulation of a chemical analyte, even a surfactant, log P.sub.ow values for the analyte may be determined by calculating the log of the ratio of the concentrations of the analyte in n-octanol and in water, equilibrated using a slow-stir method. I |
| H2152 |
Telemetry system having amplitude modulation of Walsh functions |
April 4, 2006 |
| A digital communications system employing modulated Walsh functions to convey data across a communications channel. In one embodiment, the system includes a transmitter having a constellation encoder, and a Walsh constellation modulator. The constellation encoder receives a sequence of |
| H1932 |
Wettability and fluid displacement in a well |
January 2, 2001 |
| An inverter fluid that intermixes with a non-aqueous (e.g., oil) external/aqueous internal fluid to cause external/internal inversion is designed. This includes testing a selected inverter fluid with a test fluid having a composition nominally equivalent to the composition of the non |
| 7613665 |
Ensembles of neural networks with different input sets |
November 3, 2009 |
| Methods of creating and using robust neural network ensembles are disclosed. Some embodiments take the form of computer-based methods that comprise receiving a set of available inputs; receiving training data; training at least one neural network for each of at least two different su |
| 7612021 |
Methods and compositions utilizing lost-circulation materials comprising composite particulates |
November 3, 2009 |
| Disclosed embodiments relate to compositions and methods for using a composite particulate comprising a cellulosic fiber and a filler as a lost-circulation material. An example of a method of controlling lost circulation in a subterranean method, comprises contacting a subterranean f |
| 7611290 |
Fiber optic wet connector acceleration protection and tolerance compliance |
November 3, 2009 |
| Fiber optic wet connector acceleration protection and tolerance compliance. In a described embodiment, a fiber optic connection system for use in a subterranean well includes two assemblies, each having a fiber optic connector. A biasing device applies a biasing force which maintains |
| 7610959 |
Methods and materials for subterranean fluid forming barriers in materials surrounding wells |
November 3, 2009 |
| Disclosed is a method and material for forming a fluid barrier in the material surrounding a wellbore. The method involves temporarily opening a fracture extending from the wellbore and then depositing particulates in the fracture which will swell when exposed to the fluid. The particles |
| 7610251 |
Well control systems and associated methods |
October 27, 2009 |
| Well control systems and associated methods. A well control method includes the steps of drilling a wellbore and predicting a change in flow between the wellbore and a reservoir prior to the change occurring, the predicting step being performed, and the change in flow occurring while |
| 7608567 |
Degradable surfactants and methods for use |
October 27, 2009 |
| The present invention relates to methods for treating subterranean formations. A method, that comprises providing a treatment fluid that comprises an aqueous fluid, and a degradable surfactant derived from a degradable polymer; and introducing the treatment fluid into a well bore tha |
| 7608566 |
Degradable particulates as friction reducers for the flow of solid particulates and associated m |
October 27, 2009 |
| Particulate compositions that comprise macro-particulates, and degradable particulates in an amount sufficient to reduce friction between the macro-particulates, the degradable particulates having a mean particle diameter of at least about 20 times smaller than the mean particle diam |
| 7607484 |
Foamed cement compositions comprising oil-swellable particles and methods of use |
October 27, 2009 |
| Of the many compositions and methods provided herein, an embodiment of a method comprises introducing a foamed cement composition into a subterranean formation, wherein the foamed cement composition comprises: a cementitious component; a foaming and stabilizing surfactant; an oil-swe |
| 7607483 |
Sealant compositions comprising colloidally stabilized latex and methods of using the same |
October 27, 2009 |
| Sealant compositions comprising a colloidally stabilized latex and methods of using the same to service a wellbore are provided. The sealant compositions may include: an aliphatic conjugated diene monomer; an additional monomer comprising a non-aromatic unsaturated mono- or di-carbox |
| 7607482 |
Settable compositions comprising cement kiln dust and swellable particles |
October 27, 2009 |
| A variety of methods and compositions are disclosed herein, including, in one embodiment, a method comprising: introducing a settable composition into a subterranean formation, wherein the settable composition comprises: a cementitious component comprising a hydraulic cement and ceme |
| 7606636 |
Methods for managing flow control valves in process systems |
October 20, 2009 |
| Methods for managing the operational condition of flow control valves in process systems. As a control valve experiences mechanical wear during operation, the physical changes to the valve can alter its dead band and flow coefficient. A non-linear dynamic model determines the present dea |
| 7604053 |
Methods of cementing with lightweight cement composition |
October 20, 2009 |
| Foamed cement compositions comprising density reducing additives and methods of making and using the same are disclosed. In one embodiment, a method of cementing is disclosed. The method of cementing comprises preparing a base cement composition comprising a cement, a water, and a de |
| 7603897 |
Downhole probe assembly |
October 20, 2009 |
| A downhole, extendable apparatus and methods of use are described and claimed herein. In one embodiment, the extendable apparatus includes a piston that extends toward a borehole wall, the piston having an inner sampling member that is also extendable. The sampling member may be furt |
| 7598208 |
Filter cake degradation compositions and methods of use in subterranean operations |
October 6, 2009 |
| The present invention relates to methods and compositions for degrading filter cakes in subterranean formations, and more specifically, to improved methods and compositions for degrading filter cakes that comprise acid-soluble portions and polymeric portions. In one embodiment, the p |
| 7597151 |
Hydraulically operated formation isolation valve for underbalanced drilling applications |
October 6, 2009 |
| A formation isolation valve for underbalanced drilling applications. A system for operating a formation isolation valve includes the valve interconnected in a casing string. An assembly displaces through the casing string, thereby causing the valve to open prior to the assembly reach |
| 7597149 |
Safety valve with extension springs |
October 6, 2009 |
| A safety valve with extension springs. In a described embodiment, a valve for use in a subterranean well includes a closure member having open and closed positions. A structure displaces to cause the closure member to displace between the open and closed positions. A biasing device has a |
| 7597146 |
Methods and apparatus for completion of well bores |
October 6, 2009 |
| Methods and devices for completion of well bores and more particularly, to reverse circulation cementing of casing strings in well bores are provided. One example of a method may comprise a method for providing fluidic access to an outer annulus of a casing string within a well bore. |
| 7596995 |
Single phase fluid sampling apparatus and method for use of same |
October 6, 2009 |
| An apparatus (100) for obtaining a plurality of fluid samples in a subterranean well includes a carrier (104), a plurality of sampling chambers (102) and a pressure source (108). The carrier (104) has a longitudinally extending internal fluid passageway (112) and a plurality of exter |
| 7595737 |
Shear coupled acoustic telemetry system |
September 29, 2009 |
| A shear coupled acoustic telemetry system. An acoustic telemetry system includes a tubular string having a pressure-bearing wall and an acoustic telemetry assembly positioned external to the wall and operative to communicate an acoustic signal between the assembly and the wall. The a |
| 7595391 |
Crosslinked polysaccharides and methods of making and using crosslinked polysaccharides |
September 29, 2009 |
| This invention relates to methods of crosslinking polysaccharides to form crosslinked polysaccharides, and more particularly, to crosslinked polysaccharides that may be incorporated in fluids useful in, for example, applications requiring a crosslinked viscoelastic gel. In one embodi |
| 7595283 |
Methods and compositions for reducing the production of water and stimulating hydrocarbon produc |
September 29, 2009 |
| The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and methods for using such subterranean treatment fluids in subterranean operations to reduce |
| 7595282 |
Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid |
September 29, 2009 |
| The invention provides a method for treating a subterranean formation penetrated by a wellbore, the method comprising the steps of formulating a treatment fluid and introducing the treatment fluid through the wellbore. The treatment fluid comprises water; diutan; and a sufficient amo |
| 7595281 |
Methods to increase recovery of treatment fluid following stimulation of a subterranean formatio |
September 29, 2009 |
| The invention provides a method of treating a subterranean formation penetrated by a wellbore, the method comprising the steps of: (a) mixing a particulate and an active material to obtain an at least partially coated particulate, wherein: (i) water forms a contact angle of less than |
| 7595280 |
Delayed tackifying compositions and associated methods involving controlling particulate migrati |
September 29, 2009 |
| Delayed tackifying compositions are provided for reducing particulate migration in subterranean formations, the compositions comprising an aqueous tackifying agent and a delayed-acid releasing activator. |
| 7594763 |
Fiber optic delivery system and side pocket mandrel removal system |
September 29, 2009 |
| A fiber optic delivery system and side pocket mandrel removal system. In one example, a system for making optical connections in a well includes an optical connector positioned in the well, and another optical connector displaceable into operative connection with the first optical co |
| 7594434 |
Downhole tool system and method for use of same |
September 29, 2009 |
| A downhole tool system includes a downhole tool operably positionable within a wellbore and a sensor positioned within the downhole tool. The sensor has a first mode and a second mode. In the first mode, the sensor is responsive to RF interrogation. In the second mode, the sensor is not |
| 7591343 |
Apparatuses for generating acoustic waves |
September 22, 2009 |
| An example apparatus for generating acoustic waves is disclosed. The example apparatus includes a housing, and at least one plate having a moment arm, wherein each plate couples to the housing. The example apparatus for generating acoustic also includes at least one axial driver coup |
| 7591318 |
Method for removing a sealing plug from a well |
September 22, 2009 |
| A method for removing a sealing plug from a casing or a wellbore according to which a sealing plug is adapted to expand into engagement with the casing or the wellbore. A wireless signal is sent to the plug to cause the plug to lose its structural integrity and fall to the bottom of the |
| 7591313 |
Methods of treating particulates and use in subterranean formations |
September 22, 2009 |
| Provided are methods of modifying the surface stress-activated reactivity of proppant particulates used in subterranean operations. In one embodiment, the methods comprise: providing a plurality of particulates, at least one of which comprises a mineral surface; providing a surface-t |
| 7589048 |
Methods and compositions for reducing the production of water and stimulating hydrocarbon produc |
September 15, 2009 |
| The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and methods for using such subterranean treatment fluids in subterranean operations to reduce |
| 7588082 |
Downhole tool position sensing system |
September 15, 2009 |
| A downhole tool includes a mandrel, an inner sleeve, and an outer housing. The inner sleeve being rotatable relative to the outer housing and the mandrel being rotatable relative to the inner sleeve and the outer housings. The outer surface of the inner sleeve includes more than one |
| 7587373 |
Neural network based well log synthesis with reduced usage of radioisotopic sources |
September 8, 2009 |
| Logging systems and methods are disclosed to reduce usage of radioisotopic sources. Some embodiments comprise collecting at least one output log of a training well bore from measurements with a radioisotopic source; collecting at least one input log of the training well bore from mea |
| 7585819 |
Methods for producing a guar gum comprising undehusked guar and for using the guar gum in treati |
September 8, 2009 |
| A method is provided for producing a guar gum powder, the method comprising the steps of: (a) flaking undehusked guar splits; and (b) grinding the flaked, undehusked guar splits to obtain guar gum powder. According to another aspect of the invention, a method is provided for treating |
| 7585818 |
Nonnatural galactomannans and methods of use |
September 8, 2009 |
| Methods comprising: providing a treatment fluid comprising: an aqueous base fluid and a gelling agent that comprises a nonnatural galactomannan; and placing the treatment fluid into the subterranean formation. Treatment fluids suitable for use in a subterranean treatment operation co |
| 7584795 |
Sealed branch wellbore transition joint |
September 8, 2009 |
| A sealed branch wellbore transition joint. A method of completing a well having intersecting wellbores includes the steps of: positioning a diverter in a wellbore; diverting an assembly from the wellbore into another wellbore; and swelling a sealing material on the assembly, so that |
| 7584792 |
Plug systems and methods for using plugs in subterranean formations |
September 8, 2009 |
| A method of cementing a casing string in a subterranean well bore. An exemplary embodiment of a method includes injecting a cement composition into a casing string, and deploying within the casing string at least one cementing plug having an outer body and a detachable inner mandrel |
| 7584791 |
Methods for reducing the viscosity of treatment fluids comprising diutan |
September 8, 2009 |
| Methods are provided that include a method comprising providing a treatment fluid comprising a base fluid and a gelling agent that comprises a diutan composition; providing a breaker that comprises an acid composition; allowing the breaker to interact with the treatment fluid; and al |
| 7584655 |
Formation tester tool seal pad |
September 8, 2009 |
| A formation tester tool includes a formation tester tool body having a surface, a formation probe assembly located within the formation tester tool body, the formation probe assembly including a piston reciprocal between a retracted position and an extended position beyond the surface |
