| Patent Number |
Title Of Patent |
Date Issued |
| 7021377 |
Methods of removing filter cake from well producing zones |
April 4, 2006 |
| Methods are provided for removing filter cake containing a bridging agent soluble in a carboxylic acid salt from a formation fluids producing zone penetrated by a well bore. The methods basically comprise the steps of introducing in an aqueous carrier liquid a carboxylic acid ester and a |
| 7021375 |
Methods of downhole testing subterranean formations and associated apparatus therefor |
April 4, 2006 |
| Methods and apparatus are provided which permit well testing operations to be performed downhole in a subterranean well. In various described methods, fluids flowed from a formation during a test may be disposed of downhole by injecting the fluids into the formation from which they were |
| 7019528 |
Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired p |
March 28, 2006 |
| A method and apparatus for use within a borehole for simultaneously determining the horizontal resistivity, vertical resistivity, and relative dip angle for anisotropic earth formations. An antenna configuration in which a transmitter antenna and a receiver antenna are oriented in no |
| 7017668 |
Sealed multilateral junction system |
March 28, 2006 |
| A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent |
| 7017665 |
Strengthening near well bore subterranean formations |
March 28, 2006 |
| The present invention relates to improved methods for completing well bores along producing zones and, more particularly, to methods for strengthening near well bore subterranean formations. Some embodiments of the present invention provide a method of strengthening the near well bor |
| 7017662 |
High temperature environment tool system and method |
March 28, 2006 |
| In at least some embodiments, a tool may comprise a tool body and one or more tool components. The tool may further comprise tool electronics located within the tool body, wherein the tool electronics are operable to sense and store tool component characteristics and environmental ch |
| 7013998 |
Drill bit having an improved seal and lubrication method using same |
March 21, 2006 |
| 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 |
| 7013977 |
Sealed connectors for automatic gun handling |
March 21, 2006 |
| A sealed perforating gun assembly for use with automatic pipe handling equipment on oil and gas drill rigs. An upper sealed connector and a lower sealed connector have sealed threaded connections for mating with ends of a perforating gun. The connectors have external dimensions equiv |
| 7013976 |
Compositions and methods for consolidating unconsolidated subterranean formations |
March 21, 2006 |
| The present invention described a resin composition comprising from about 5% to about 30% phenol, from about 40% to about 70% phenol formaldehyde, from about 10% to about 40% furfuryl alcohol, from about 0.1% to about 3% of a silane coupling agent, and from about 1% to about 15% of a |
| 7013975 |
Foamed cement slurries, additives and methods |
March 21, 2006 |
| The present invention relates to foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and an environmentally benign foaming and stabilizing additive comprising |
| 7013974 |
Methods of treating subterranean zones using gelled aqueous treating fluids containing environme |
March 21, 2006 |
| Methods of treating subterranean zones using gelled aqueous treating fluids containing environmentally benign sequestering agents are provided. The methods basically comprise the steps of preparing or providing a treating fluid comprising water containing divalent metal ions, a gelli |
| 7013971 |
Reverse circulation cementing process |
March 21, 2006 |
| A method of cementing a casing in a wellbore with a tool having a plurality of holes therethrough connected at a lower end of the casing. The total cross-sectional area of the holes is preferably greater than the cross-sectional area of the inside of the casing. A plurality of stoppe |
| 7012545 |
Annulus pressure operated well monitoring |
March 14, 2006 |
| A method is provided for monitoring a well. In a described embodiment, the method uses annulus pressure to communicate between a downhole system and a remote location. The method may use intermittent electrical power generated by changes in annulus pressure to power the downhole system. |
| 7010429 |
Induction logging system and method featuring multi-frequency skin effect correction |
March 7, 2006 |
| A system and method of correcting skin effect of conductivity measurements made by electromagnetic induction well logging instruments. A limited number of measurements using different frequencies may be used. The skin effect correction system and method is capable of processing a complex |
| 7008907 |
Additive for oil-based drilling fluids |
March 7, 2006 |
| A method and product is disclosed which provides emulsion stability and filtration control to invert emulsion drilling fluids. The product comprises a blend of a carboxylic acid terminated polyamide and/or a wetting agent with a reaction product or mixture produced by the Diels-Alder |
| 7008479 |
Methods and cement compositions for cementing in subterranean zones |
March 7, 2006 |
| Methods of cementing in subterranean zones, improved cement compositions and improved additives are provided. The compositions are basically comprised of a hydraulic cement, sufficient water to form a slurry and an additive for providing improved rheology, fluid loss control and set |
| 7008477 |
Foamed cement slurries, additives and methods |
March 7, 2006 |
| The present invention relates to foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and an environmentally benign foaming and stabilizing additive comprising |
| 7007755 |
Elastomeric admixtures for improving cement elasticity |
March 7, 2006 |
| A method and cementing composition for sealing a subterranean zone penetrated by a well bore, wherein the cementing composition comprises a mixture of cementitious material, acrylonitrile butadiene styrene (ABS), and sufficient water to form a slurry. |
| 7007752 |
Well treatment fluid and methods with oxidized polysaccharide-based polymers |
March 7, 2006 |
| The present invention provides a well treatment fluid for use in a well, the well treatment fluid comprising water; an amine-based polymer; an polysaccharide-based polymer; and an oxidizing agent that is capable of at least partially oxidizing at least the polysaccharide-based polymer. |
| 7004680 |
Temporary support assembly and method of supporting a flexible line |
February 28, 2006 |
| A support assembly for a flexible line comprises a hanger to suspend the flexible line from an offshore oil rig without subjecting the line to a bending stress adjacent the support assembly, a frame supporting the hanger, and a connector coupled to the frame to removeably connect the |
| 7004256 |
Set retarder compositions, cement compositions, and associated methods |
February 28, 2006 |
| Cement compositions, that comprise water, a cement, a strength-retrogression additive, and an acid, wherein the acid comprises ethylenediamine tetra acetic acid, nitrilotriacetic acid, or a combination thereof, are provided. Methods of cementing in a subterranean formation, methods o |
| 7004254 |
Subterranean treatment fluids, friction reducing copolymers, and associated methods |
February 28, 2006 |
| Aqueous treatment fluids that comprise water, and a friction reducing copolymer that comprises acrylamide in an amount in the range of from about 60% to about 90% by weight and acrylic acid in an amount in the range of from about 10% to about 20% by weight. Methods of treating portio |
| 7004021 |
Method and system for detecting conditions inside a wellbore |
February 28, 2006 |
| Embodiments of methods and systems for detecting conditions inside a wellbore according to the invention are disclosed. One embodiment of the invention of the system includes a pipe (150) that is configured to rotate in a wellbore (140). A first detector (120) is located near the sur |
| 7001872 |
Subterranean formation treating fluid and methods of fracturing subterranean formations |
February 21, 2006 |
| The present invention relates to methods and compositions for treating subterranean well formations, and more specifically, to improved subterranean formation treating fluid concentrates, treating fluids and methods of using such treating fluids in subterranean formations. The treati |
| 7001534 |
Alum pellets |
February 21, 2006 |
| Compositions including pellets of alum, a smectite mineral material, and optionally sodium or calcium carbonate, that can be delivered to a phosphate impoundment located at or near the bottom of a body of water. The pellets of alum, smectite mineral material and optionally sodium or |
| 7000704 |
Latch profile installation in existing casing |
February 21, 2006 |
| A method of installing an internal latch profile in an existing tubular string does not require the use of a packer. In a described embodiment, a method of latch installation includes the step of deforming an interior surface of the tubular string after the tubular string is positioned i |
| 7000703 |
Sealed multilateral junction system |
February 21, 2006 |
| A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent |
| 7000702 |
Environmentally benign viscous well treating fluids and methods |
February 21, 2006 |
| Environmentally safe viscous well treating fluids and methods are provided by the present invention. The treating fluids are basically comprised of water, a viscosity producing polymer, a boron cross-linking agent for cross-linking the polymer, and a delayed cross-link delinker that |
| 7000701 |
Compositions and methods for weighting a breaker coating for uniform distribution in a particula |
February 21, 2006 |
| The present invention involves methods and compositions for treating subterranean formations, and more specifically, relates to improved methods and compositions for degrading filter cake deposited in a subterranean formation by effecting a uniform distribution of a filter cake break |
| 7000695 |
Expanding wellbore junction |
February 21, 2006 |
| An expanding wellbore junction system, apparatus and methods are provided for forming a sealed wellbore intersection in a subterranean well. In one described method, an expandable wellbore junction is expanded within an under-reamed cavity in a wellbore. Intersecting tubular legs of the |
| 6998999 |
Hybrid piezoelectric and magnetostrictive actuator |
February 14, 2006 |
| An electromechanical transducer formed by an electrical and mechanical combination of a piezoelectric device and a magnetostrictive device. The two devices are electrically coupled so that their capacitive and inductive reactances approach a balance to provide an essentially resistiv |
| 6997272 |
Method and apparatus for increasing drilling capacity and removing cuttings when drilling with c |
February 14, 2006 |
| An assembly for drilling a deviated borehole includes a bottom hole assembly connected to a string of coiled tubing and includes a bit driven by a downhole motor powered by drilling fluids. A surface pump pumps the drilling fluids downhole through a cross valve to provide a first path |
| 6997270 |
Compounds and method for generating a highly efficient membrane in water-based drilling fluids |
February 14, 2006 |
| A method is disclosed that affords improved stability to wellbores during drilling in argillaceous formations with water-based drilling fluids. The method comprises adding to the drilling fluid a compound of the invention having the capacity in water to generate a highly efficient membra |
| 6997263 |
Multi zone isolation tool having fluid loss prevention capability and method for use of same |
February 14, 2006 |
| A multi zone isolation tool (50) for use in a subterranean wellbore includes a first tubular and a second tubular disposed within the first tubular forming an annular flow path (110a, 110b) therebetween and a central flow path (70a, 80a, 80b) through the second tubular. An annular va |
| 6997259 |
Methods for forming a permeable and stable mass in a subterranean formation |
February 14, 2006 |
| The present invention relates to increasing the permeability of a subterranean formation by forming a resinous mass having conductive channels through which fluids can be produced in the formation. Some embodiments of the present invention provide methods of creating a permeable resi |
| 6997253 |
Anti-rotation method and apparatus for limiting rotation of cementing plugs |
February 14, 2006 |
| An apparatus for preventing or limiting the rotation of cementing plugs in a casing string during drillout. The apparatus includes an outer housing with a sleeve disposed therein. The sleeve has an inner surface configured to engage cementing plugs received therein to cause an interf |
| 6997252 |
Hydraulic setting tool for packers |
February 14, 2006 |
| A hydraulic setting tool for packers capable of mechanically setting the packer and opening a valve in the packer in one trip. The tool comprises an outer sleeve and an inner mandrel coaxially disposed within the outer sleeve and adapted to move axially relative to the outer sleeve. The |
| 6994170 |
Expandable sand control screen assembly having fluid flow control capabilities and method for us |
February 7, 2006 |
| A sand control screen assembly (60) comprises a base pipe (62) having at least one opening (64) that allows fluid flow therethrough and a filter medium (66) positioned about the exterior of the base pipe (62) that allows fluid flow therethrough and prevents particulate flow therethro |
| 6994165 |
Multilateral open hole gravel pack completion methods |
February 7, 2006 |
| A method of gravel packing a branch wellbore extending outwardly from a parent wellbore enables formation of a sealed wellbore junction. In a described embodiment, a gravel packing assembly is positioned in a well, so that an upper packer is in the parent wellbore and a well screen and |
| 6994164 |
Method for enhancing the stability of a water sensitive, reactive subterranean formation |
February 7, 2006 |
| The current invention provides a method for enhancing the formation stability of water sensitive, reactive formations penetrated by a wellbore. The method of the current invention provides an accurate evaluation of the impact of cementing fluids on water sensitive, reactive formation |
| 6992048 |
Methods of generating gas in well treating fluids |
January 31, 2006 |
| The present invention relates to methods of generating gas in and foaming well treating fluids during pumping of the treating fluids or after the treating fluids are placed in a subterranean zone, or both. A method of the present invention provides a method of making a foamed well fluid |
| 6989354 |
Invertible well bore servicing fluid |
January 24, 2006 |
| An invert emulsion fluid, method for making same, and method for using same as a servicing fluid in a well bore. The invert emulsion fluid contains an oleaginous fluid, a non-oleaginous fluid, and an emulsifier comprising one or more amines generally represented by the formula: ##STR |
| 6989353 |
Method for reducing sag in drilling, completion and workover fluids |
January 24, 2006 |
| A method is disclosed for reducing sag in drilling and completion fluids and in workover fluids. The method employs a drilling fluid comprising a low molecular weight polyalkyl methacrylate with an average molecular weight ranging from about 40,000 to about 90,000. This additive does not |
| 6989352 |
Silicic acid mud lubricants |
January 24, 2006 |
| A lubricant for use in silicic acid muds and other drilling fluids comprising silicate or silica species is disclosed. The lubricant significantly improves the lubricity of the fluid. A method of drilling a wellbore in a subterranean formation employing the lubricant is also disclose |
| 6989057 |
Zeolite-containing cement composition |
January 24, 2006 |
| A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry. |
| 6988556 |
Deep set safety valve |
January 24, 2006 |
| Apparatus and methods are provided for actuation of downhole tools. In one example, a deep set safety valve uses a magnetic coupling which permits a portion of the safety valve at control line pressure to be isolated from tubing string internal pressure, without requiring the use of a dy |
| 6987463 |
Method for collecting geological data from a well bore using casing mounted sensors |
January 17, 2006 |
| A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the receiver. The casi |
| 6987385 |
System and methods for analyzing carbonate formations while drilling |
January 17, 2006 |
| A logging while drilling (LWD) and measuring while drilling (MWD) method is disclosed for analyzing the porosity of geologic formations containing carbonate-formations. The method is based on a combination of T1 and T2 measurements that enables detection of diffusivity coupling and permi |
| 6987083 |
Xanthan gels in brines and methods of using such xanthan gels in subterranean formations |
January 17, 2006 |
| Xanthan gels hydratable in brine, methods of making these xanthan gels, and methods of using these compositions in subterranean formation applications, such as gravel packing, are provided herein. |
| 6986396 |
Method for determining sweep efficiency for removing cuttings from a borehole |
January 17, 2006 |
| A new method for evaluating the efficiency of a sweep for removing cuttings from a borehole in a subterranean formation during a drilling operation. The method evaluates sweep efficiency on a "mass" in versus "mass out" basis. The method uses downhole density readings taken with a pr |
