| Patent Number |
Title Of Patent |
Date Issued |
| 7311154 |
Line slack compensator |
December 25, 2007 |
| A completion assembly has one or more control lines. The control lines can develop differing degrees of slack depending on the completion assembly configuration and also on the particular use of the completion assembly. A line slack compensator cooperates with the completion assembly to |
| 7311153 |
Flow-biased sequencing valve |
December 25, 2007 |
| A technique that is usable with a well includes providing a sequencing valve to in a first state to communicate a first flow through a first port of the valve and in a second state close fluid communication through the first port. The technique includes communicating a second flow th |
| 7311142 |
Apparatus and method for aquiring information while drilling |
December 25, 2007 |
| A downhole tool positionable in a wellbore for penetrating a subterranean formation includes a housing having at least one protuberance extending therefrom. The protuberance has at least one centralizing section and a protective section. A probe is positioned in the protective section su |
| 7310285 |
Method for characterizing shear wave formation anisotropy |
December 18, 2007 |
| A method of characterizing shear wave anisotropy in a formation includes obtaining crossed-dipole waveforms from a borehole penetrating the formation over a range of depths and frequencies, determining far-field slowness in a fast-shear and slow-shear direction using a low-frequency |
| 7309983 |
Method for determining characteristics of earth formations |
December 18, 2007 |
| A method for determining a characteristic of earth formations from measurements taken on the formations, includes the following steps: producing a data base that includes a multiplicity of data points, each data point representing a stored formation characteristic output related to a |
| 7308941 |
Apparatus and methods for measurement of solids in a wellbore |
December 18, 2007 |
| Apparatus and methods for measuring solids in wellbore that include a bottom hole assembly having a sensor to measuring a characteristic indicative of solids in the wellbore. The measurement may be used to measure solids or solids suspended in fluid flow. The invention is useful for |
| 7306043 |
System and method to control multiple tools through one control line |
December 11, 2007 |
| The invention is a system and method a system used to control multiple downhole tools with one control line. The downhole tools may comprise any hydraulically actuated tools, such as valves, packers, or perforating guns. Each tool is associated with an indexer, in one embodiment, so that |
| 7306041 |
Method for treating a subterranean formation |
December 11, 2007 |
| Disclosed are acid fracturing methods for subterranean siliceous formations employing a viscous dissolving fluid to create a permeable conduit that bypasses the near wellbore damage. The viscous dissolving fluids used according to the invention are acid-fracturing treatment fluids co |
| 7305306 |
System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
December 4, 2007 |
| Methods and systems are provided for downhole analysis of formation fluids by deriving fluid properties and associated uncertainty in the predicted fluid properties based on downhole data, and generating answer products of interest based on differences in the fluid properties. Measured d |
| 7304725 |
Optical time domain reflectometry |
December 4, 2007 |
| An optical time domain reflectometry apparatus for sensing a parameter in a region of interest is characterized in that the optical fiber includes a first section into which optical radiation at the probe wavelength is launched and a second section deployed in the region of interest. The |
| 7304098 |
Hydrogel for use in downhole seal applications |
December 4, 2007 |
| The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed with the composition are particularly suited for use in a wellbore environment. The inclusion |
| 7304019 |
Concentrated suspensions |
December 4, 2007 |
| Suspensions are provided of water-soluble materials in non-aqueous carrier fluids using suspension agents that include organophilic clays. Methods of forming such suspensions are provided. Methods are also provided for using such suspensions to prepare aqueous solutions, in particular |
| 7303012 |
Propped fracture with high effective surface area |
December 4, 2007 |
| Propped fractures in formations from which fluids are produced are described that have wormholes extending out into the formations from the faces of the fractures at locations distant from boreholes. Methods are given for creating such propped fractures having wormholes in which eith |
| 7303011 |
Downhole formation testing tool |
December 4, 2007 |
| A downhole tool positionable in a wellbore penetrating a subterranean formation is disclosed. The downhole tool includes a housing, a coring bit and a sample chamber. The coring bit is disposed in the housing and is extendable therefrom for engaging a wellbore wall. The sample chamber |
| 7302966 |
Flow control valve and method |
December 4, 2007 |
| A flow control valve includes a body having a fluid passageway therethrough and first and second openings each adapted for receiving or discharging fluid from the passageway. A piston is slidably disposed in the passageway between the first and second openings of the body. The piston |
| 7302849 |
Method and system for monitoring of fluid-filled domains in a medium based on interface waves pr |
December 4, 2007 |
| The invention relates to monitoring of fluid-filled domains in various media including, for example, subterranean formations, construction elements, bones. Claimed are a method for determining characteristic sizes of a fluid-filled crack in a medium and a system for implementation th |
| 7302346 |
Data logging |
November 27, 2007 |
| A device and method for determining a geophysical characteristic of a borehole using at least one logging device is provided, wherein the at least one logging device includes at least one sensing device. The method includes associating the at least one sensing device with the borehole, |
| 7301609 |
Measuring sonde for a hydrocarbon well |
November 27, 2007 |
| The invention provides a measuring sonde (1) for a hydrocarbon well, the sonde comprising a main body (2), a downstream arm (3), and an upstream arm (5), at least one of said arms being fitted with measurement means (6) for determining the characteristics of the fluid flowing in the well |
| 7301474 |
Wireless communication system and method |
November 27, 2007 |
| A wireless communication system for use in well, subsea, and oilfield-related environments employs one or more wireless network devices that offer short-range wireless communication between devices without the need for a central network which may have a device using a BLUETOOTH proto |
| 7301345 |
While-drilling methodology for estimating formation pressure based upon streaming potential meas |
November 27, 2007 |
| Logging-while-drilling apparatus and methodologies for measuring streaming potential in an earth formation are provided. The apparatus and methodologies can be utilized to find information relevant to the drilling operations. In particular, since the streaming potential measurement r |
| 7301339 |
Estimating the concentration of a substance in a sample using NMR |
November 27, 2007 |
| A method for estimating a concentration of a substance in a test sample of formation fluid, comprising measuring an NMR parameter of a first sample of formation fluid to obtain a first measurement, adding a known quantity of the substance to the first sample to produce a modified sample, |
| 7299870 |
Self diverting matrix acid |
November 27, 2007 |
| A method is described for treating a subterranean formation with a low viscosity fluid system that contains a surfactant or mixture of surfactants that does not divert fluid flow in the formation, but that develops the ability to divert flow as the fluid flows through the formation. |
| 7298285 |
Rotary downlink system |
November 20, 2007 |
| A method for downlink communication with a downhole tool having a mud-powered downhole motor that includes receiving a sensor signal related to a rotational speed of a rotor in the mud-powered downhole motor, and interpreting the sensor signal to derive a downlink signal. |
| 7298147 |
Device and process for determination of the resistivity of a formation surrounding a cased boreh |
November 20, 2007 |
| Body (22) for measuring the resistivity of a formation (9) surrounding a well (10) equipped with a lining (11), comprising: a body (23) of a probe (22), a set of three primary voltage measurement electrodes (ea, eb, ec), an upper electrode (ea) and a lower electrode (ec) and a central |
| 7296624 |
Pressure control apparatus and method |
November 20, 2007 |
| Pressure control in an isolated lower wellbore annulus, defined by a conduit sealably positioned within an isolated lower wellbore segment, is achieved while gravel packing by sensing the pressure within the isolated lower annulus while gravel packing and admitting fluid from the isolate |
| 7295927 |
Determining water saturation for oil bearing thin-bedded formation having anisotropic resistivit |
November 13, 2007 |
| A method to estimate water saturation (S.sub.w) of a thin-bedded formation is provided including (a) developing a model of anisotropy of resistivity (R.sub.v/R.sub.h) a function of water saturation (S.sub.wt) for one or more volume fractions (either F.sub.shale or F.sub.sand); (b) measur |
| 7295926 |
Method for correlating well logs |
November 13, 2007 |
| Embodiments of the present invention provide methods for correlating well logs. More specifically, but not by way of limitation, in an embodiment of the present invention, data from two or more overlapping logs may be generated by a well logging device and a model for the apparent co |
| 7295013 |
Remotely operable measurement system and method employing same |
November 13, 2007 |
| A marine measurement system is disclosed for obtaining measurements in an underwater operating environment. The system includes a base structure having a top surface, a bottom surface, and cavities provided therebetween. The cavities are also open to the top surface. The measurement |
| 7294787 |
Enhanced armor wires for wellbore cables |
November 13, 2007 |
| Cables used with wellbore devices to analyze geologic formations adjacent a wellbore are disclosed. The cables include one or more armor wires formed of a high strength core surrounded by a corrosion resistant alloy clad. The cables may be employed as a slickline or multiline cables, |
| 7293715 |
Marking system and method |
November 13, 2007 |
| A marking system and method for a well site sample is provided. The system includes a container for collecting the well site sample, a marker applied to the container and a scanner adapted to read the marker. Data may be uploaded to and/or downloaded from the marker. |
| 7292942 |
Measuring formation density through casing |
November 6, 2007 |
| A method of determining formation density in a cased hole environment using a logging tool having a gamma ray source, a long spacing detector, and a short spacing detector that includes developing one or more cased hole calibration relationships that utilize differences between scattered |
| 7292345 |
Fibre-optic interferometric remote sensor |
November 6, 2007 |
| A method and apparatus for receiving measurements from an interferometer transducer (22) uses a broad band light beam (19A), reflected from the transducer (22), and compares it with the amplitudes of narrow band beams, derived from the reflected broad band light beam (19A), by filters |
| 7291651 |
Carbon dioxide foamed fluids |
November 6, 2007 |
| An aqueous viscoelastic surfactant (VES) fluid foamed or energized with carbon dioxide, in which the VES is more compatible with the carbon dioxide, is made by the addition of one or more than one synergistic co-surfactant. The synergist co-surfactant includes quaternary amines and e |
| 7290617 |
Running a completion assembly without killing a well |
November 6, 2007 |
| A technique to place a completion assembly in a well while maintaining the well in an underbalanced condition includes running a plug on a deployment tool to a desired depth in the well. The technique includes setting the plug in the well; retrieving the deployment tool; and running |
| 7290615 |
Fluid having recyclable viscosity |
November 6, 2007 |
| Compositions are given that have high viscosities at one pH range and low viscosities at another pH range. Methods are given for using such compositions in oilfield treatments. In particular CT wellbore cleanout compositions and methods are given in which a viscous fluid is injected |
| 7290443 |
Method for measuring formation properties with a time-limited formation test |
November 6, 2007 |
| An apparatus and method for determining at least one downhole formation property is disclosed. The apparatus includes a probe and a pretest piston positionable in fluid communication with the formation, and a series of flowlines pressure gauges, and valves configured to selectively d |
| 7288721 |
Electrical cables |
October 30, 2007 |
| Disclosed are durable corrosion resistant wellbore electrical cables including a coated electrical conductor, a polymeric protective layer for trapping coating flakes, a first insulating jacket disposed adjacent to the polymeric protective layer and having a first relative permittivity. |
| 7288505 |
Fluid system having controllable reversible viscosity |
October 30, 2007 |
| This Invention relates to methods of treating a subterranean hydrocarbons reservoir comprising contacting the formation with a treating fluid comprising an aqueous solution, an acid, a surfactant acting as gelling agent essentially consisting of erucylamidopropyl betaine (or a proton |
| 7287593 |
Methods of fracturing formations using quaternary amine salts as viscosifiers |
October 30, 2007 |
| Treatment methods including preparation of an aqueous treatment fluid composition composed of a carboxy modified polymer, a crosslinking agent, and a viscosifying quaternary amine salt, and subsequently introducing the composition into a the formation to treat. The treatment method is |
| 7287590 |
Internal breaker for oilfield fluids |
October 30, 2007 |
| Delayed breakers are given that break viscoelastic surfactant fluids inside the pores of formations into which the fluids have been injected. The breakers comprise proteins, proteins that contain breakers, or cells that contain breakers. Proteins become breakers, and proteins and cells |
| 7287589 |
Well treatment system and method |
October 30, 2007 |
| A well treatment system of the present invention includes a housing forming a sealed surge chamber, and a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the |
| 7286937 |
Estimating formation properties from downhole data |
October 23, 2007 |
| Methods and systems for extracting formation properties from formation logging data is disclosed. A method includes obtaining a deconvolution filter; and processing the formation logging data using the deconvolution filter to produce estimates of the formation properties. The estimates o |
| 7286091 |
Co-located antennas |
October 23, 2007 |
| Techniques for implementing antenna configurations with substantially co-located axes are disclosed. A method for constructing co-located antennas includes winding a first antenna on a support, the first antenna having a first magnetic dipole in a first orientation; and winding a sec |
| 7285931 |
Brushless motor commutation and control |
October 23, 2007 |
| A commutation apparatus drives a brushless motor having a stator equipped with a plurality of coils and a rotor. The commutation apparatus comprises a rotatable commutator shaft, two or more conducting rings carried discretely about the shaft, and two or more conducting segments carr |
| 7285929 |
Brushless motor commutation and control |
October 23, 2007 |
| A commutation apparatus drives a brushless motor having a stator equipped with a plurality of coils and a rotor. The commutation apparatus comprises a rotatable commutator shaft, two or more conducting rings carried discretely about the shaft, and two or more conducting segments carr |
| 7285772 |
Logging tool with a parasitic radiation shield and method of logging with such a tool |
October 23, 2007 |
| It is described a logging tool 20 for underground formations surrounding a borehole 14, comprising an elongated body 21 along a major axis; a collar 22 disposed peripherally around said body 21 having a collar wall defined by an inner and an outer surface; a radiation emitting source 201 |
| 7284903 |
Distributed optical fibre measurements |
October 23, 2007 |
| A method of obtaining a distributed measurement comprises deploying an optical fibre in a measurement region of interest, and launching into it a first optical signal at a first wavelength .lamda..sub.0 and a high power level, a second optical signal at a second wavelength .lamda..su |
| 7284613 |
Method and apparatus for assembling stackable gun system inside a well bore |
October 23, 2007 |
| A method for assembling a stackable perforating gun system inside a well bore is provided that includes attaching a first gun section of the stackable perforating gun system to a tracking assembly, and transporting the first gun section within the well bore using the tracking assembly. |
| 7284612 |
Controlling transient pressure conditions in a wellbore |
October 23, 2007 |
| A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool |
| 7284607 |
System and technique for orienting and positioning a lateral string in a multilateral system |
October 23, 2007 |
| A technique that is usable with a subterranean well that has a first string that lines a borehole includes running a second string into the well and engaging a deflecting face of a deflector to deflect the second string into a window of the first string. The technique includes perfor |
