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| Number | Title | Issue Date |
| 8104338 | Method and apparatus for ion-selective discrimination of fluids downhole In a particular embodiment, a method and system are disclosed for measuring ion concentrations for a fluid and determining a degree of sample cleanup during sampling of a fluid downhole. The method includes but is not limited to deploying an ion selective sensor dow... | 01/31/2012 |
| 7913557 | Adjustable testing tool and method of use Methods and systems for testing a subterranean formation penetrated by a wellbore are provided. A testing tool has a plurality of packers spaced apart along the axis of the tool, and at least a testing port. The testing tool is positioned into the wellbore and packe... | 03/29/2011 |
| 7762131 | System for predicting changes in a drilling event during wellbore drilling prior to the occurrence of the event A system for drilling a wellbore includes a prediction unit operable to predict a change in a drilling event while the wellbore is being drilled and prior to the drilling event change occurring. The prediction unit monitors surface and downhole data and well inflows... | 07/27/2010 |
| 7707878 | Circulation pump for circulating downhole fluids, and characterization apparatus of downhole fluids A circulation pump for circulating downhole fluids is provided. The circulation pump includes a cylindrical pump housing, a shaft secured in the pump housing extending in a longitudinal direction thereof, an impeller rotating around the shaft in the pump housing, a ... | 05/04/2010 |
| 7673507 | Real time viscometer An apparatus for predicting a downhole viscosity of a treating fluid has an energizer and a viscometer. The treating fluid has a gel. The energizer is capable of energizing a sample of the gel. The viscometer is capable of measuring a viscosity of the energized samp... | 03/09/2010 |
| 7637151 | Enhanced downhole fluid analysis The operation, analysis and interpretation of a chromatographic system can be significantly enhanced by coupling therewith one or more fluid property measurements that provides an initial indication of the fluid type, the presence of any contamination, an estimate o... | 12/29/2009 |
| 7571644 | Characterizing a reservoir in connection with drilling operations A system for analyzing reservoir fluids in connection with a drilling operation includes an injection system for providing geochemical analysis of injected drilling fluids; a production system for providing geochemical analysis of produced drilling fluids; a cutting... | 08/11/2009 |
| 7478555 | Technique and apparatus for use in well testing A technique that is usable with a well includes communicating fluid from the well into a downhole chamber in connection with a well testing operation. The technique includes monitoring a downhole parameter that is responsive to the communication to determine when to... | 01/20/2009 |
| 7475593 | High temperature near infrared for measurements and telemetry in well boreholes A borehole logging system for the measure and the telemetry of properties and conditions of a well borehole environs. The system is embodied to measure fluids within the borehole, to measure high resolution images of the wall of the borehole, to transfer of data to ... | 01/13/2009 |
| 7464588 | Apparatus and method for detecting fluid entering a wellbore The method and apparatus of the present invention provides for detecting a flow of a formation fluid entering into a wellbore. An ultrasonic sensor is placed in a wellbore. The sensor has a resonant member that is exposed to a fluid in the wellbore. At a location in... | 12/16/2008 |
| 7461547 | Methods and apparatus of downhole fluid analysis Methods and apparatus for downhole analysis of formation fluids by isolating the fluids from the formation and/or borehole in a pressure and volume control unit that is integrated with a flowline of a fluid analysis module and determining fluid characteristics of th... | 12/09/2008 |
| 7392697 | Apparatus for downhole fluids analysis utilizing micro electro mechanical system (MEMS) or other sensors The present invention provides packaging for MEMS devices and other sensors for downhole application. The MEMS devices and/or other sensors may aid in characterizing formation fluids in situ. The packaging facilitates high temperature, high pressure use, which is of... | 07/01/2008 |
| 7387021 | Method and apparatus for reservoir characterization using photoacoustic spectroscopy A method and apparatus are provided that assess reservoir compartmentalization by determining whether there are compositional differences such as whether the isotopic ratios of carbon (13C/12C) or of oxygen (17O/18O) are the same or different in various parts of the... | 06/17/2008 |
| 7380598 | Method for detecting fluid leakage from a subterranean formation A method for the detection of a fluid leak from a plugged well extending from a surface of the earth to penetrate a subterranean formation which contains fluid by logging a collection chamber positioned in the plugged well. ... | 06/03/2008 |
| 7373813 | Method and apparatus for ion-selective discrimination of fluids downhole In a particular embodiment, a method is disclosed for determining a source of a fluid downhole. The method includes deploying an ion selective sensor downhole, exposing the fluid to the ion selective sensor downhole, measuring an ion concentration at different place... | 05/20/2008 |
| 7363972 | Method and apparatus for well testing A method for testing petroleum or water wells. A tool is secured to a tubing and run into the well and to the reservoir zone to be explored. An upper and a lower seal isolate the reservoir zone. A piston is run into the tubing and pumped down to the tool. When sampl... | 04/29/2008 |
| 7337660 | Method and system for reservoir characterization in connection with drilling operations A method for analyzing reservoir fluids in connection with a drilling operation includes determining composition and isotopes of injection fluids injected into a wellbore during a drilling operation and production fluids recovered from the wellbore during the drilli... | 03/04/2008 |
| 7331469 | Vibratory separator with automatically adjustable beach A vibratory separator having a basket for supporting screen apparatus for treating material, the basket pivotably mounted on a base, vibratory apparatus connected to the basket for vibrating the basket, the material forming a pool on the screen apparatus, and a beac... | 02/19/2008 |
| 7302830 | Flow detectors having mechanical oscillators, and use thereof in flow characterization systems An improved system, device and method for characterizing a fluid sample that includes injecting a fluid sample into a mobile phase of a flow characterization system, and detecting a property of the fluid sample or of a component thereof with a flow detector comprisi... | 12/04/2007 |
| 7278540 | Adjustable basket vibratory separator A vibratory separator having a base, a basket movably mounted on the base and for supporting screen apparatus for treating material introduced into the vibratory separator, the basket on a base and pivotable with respect thereto, vibratory apparatus connected to the... | 10/09/2007 |
| 7263881 | Single probe downhole sampling apparatus and method A single probe system is utilized to quickly obtain uncontaminated formation fluid samples. The single probe includes an outer guard tube and an inner sampling tube which is slightly recessed relative to the outer tube such that the pressure at the front face of the... | 09/04/2007 |
| 7240546 | Method and apparatus for downhole detection of CO2 and H2S using resonators coated with CO2 and H2S sorbents A formation fluid sample is exposed to a rigidly-supported semi-permeable membrane such as silicone rubber to permit diffusion of gases and vapors from the formation fluid into a vacuum chamber, while at the same time, blocking the passage of any liquids. The membra... | 07/10/2007 |
| 7219541 | Method and apparatus for downhole fluid analysis for reservoir fluid characterization A formation fluid sample is exposed to a rigidly-supported semi-permeable membrane such as silicone rubber to permit diffusion of gases and vapors from the formation fluid into a vacuum chamber, while at the same time, blocking the passage of any liquids. The membra... | 05/22/2007 |
| 7216533 | Methods for using a formation tester A method of testing a downhole formation using a formation tester on a drill string. The formation tester is disposed downhole on a drill string and a formation test is performed by forming a seal between a formation probe assembly and the formation. A drawdown pist... | 05/15/2007 |
| 7216720 | Multi-string production packer and method of using the same A production packer comprising a packer body, a flat plate, a sealing element, production tubing, water overflow tubing, gas vent tubing, pump cable pack-off tubing, and an optional pressure transducer port. The flat plate is welded onto the top of the packer body. ... | 05/15/2007 |
| 7210343 | Method and apparatus for obtaining a micro sample downhole The present invention provides a downhole sample tank and a plurality of micro sample chambers. The micro sample chambers can have at least one window for introduction of visible, near-infrared (NIR), mid-infrared (MIR) and other electromagnetic energy into the tank... | 05/01/2007 |
| 7207395 | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement A method and system for testing a partially formed well includes forming a first well bore intersecting a subterranean formation. The first well bore includes a portion of a planned well having a first configuration. A production characteristic of the subterranean f... | 04/24/2007 |
| 7207216 | Hydraulic and mechanical noise isolation for improved formation testing An apparatus and method for isolating a downhole tool section from hydraulic and mechanical noise. Anchoring grippers are used in conjunction with a fluid diverter valve to anchor the tool section to a borehole wall and divert fluid flowing in the drill string away ... | 04/24/2007 |
| 7188528 | Low pass filter semiconductor structures for use in transducers for measuring low dynamic pressures in the presence of high static pressures A semiconductor filter is provided to operate in conjunction with a differential pressure transducer. The filter receives a high and very low frequency static pressure attendant with a high frequency low dynamic pressure at one end, the filter operates to filter sai... | 03/13/2007 |
| 7185536 | Pressure monitoring technique for downhole tools The outlet pressure of a pump that fluctuates rapidly, as is typical of high pressure multiplex pumps, is sensed in a pressure line leading from the main flow line to a damping mechanism. The damping mechanism comprises a pair of small spaced openings, which are pre... | 03/06/2007 |
| 7178591 | Apparatus and method for formation evaluation Techniques for reduced contamination formation evaluation are provided. The techniques relate to drawing fluid into a downhole tool positionable in a wellbore penetrating a subterranean formation having a virgin fluid and a contaminated fluid therein. Fluid is drawn... | 02/20/2007 |
| 7093674 | Drilling formation tester, apparatus and methods of testing and monitoring status of tester An integrated drilling and evaluation system includes a drill string having an interior portion and a drill bit, carried on a lower end, that includes ports for communicating fluid between the interior portion of the drill string and an uncased well bore. A packer, ... | 08/22/2006 |
| 7090012 | Method and apparatus for subsurface fluid sampling The apparatuses and methods herein relate to techniques for extracting fluid from a subsurface formation. A downhole sampling tool is provided with a probe having an internal wall capable of selectively diverting virgin fluids into virgin flow channels for sampling,... | 08/15/2006 |
| 7082833 | Method and apparatus for determining and assessing a characteristic of a material An acoustic energy-based, non-contact or contact testing approach provides low cost, highly accurate, and reliable information to (a) identify flaws and anomalies and (b) assess the integrity of a particular material. This approach is not hindered by surface conditi... | 08/01/2006 |
| 7083009 | Pressure controlled fluid sampling apparatus and method A formation fluid sampling tool including at least one sample tank mounted in a tool collar. The tool collar includes a through bore and is disposed to be operatively coupled with a drill string such that each sample tank may receive a correspondingly preselected fo... | 08/01/2006 |
| 7062958 | Receptacle for sampling downhole A receptacle (10) for use in collecting samples down a well bore (14) is provided, the receptacle comprising a plurality of interconnecting modules (22, 24, 26, 30, 32, 34). A main chamber (22) is capable of holding a sample, and sensors ... | 06/20/2006 |
| 7026950 | Motor pulse controller The present invention provides a method and apparatus for generating one or more than one physically detectable physical influence changes to control or manipulate a down hole device. The present invention intercepts existing control signals to various controllers o... | 04/11/2006 |
| 7025138 | Method and apparatus for hydrogen sulfide monitoring The present invention relates to a method and apparatus for detection of hydrogen sulfide in downhole operations. A downhole tool is provided with a coupon adapted to react at varying degrees to exposure to concentrations of hydrogen sulfide. The downhole tool is po... | 04/11/2006 |
| 7011155 | Formation testing apparatus and method for optimizing draw down A method and apparatus for of determining a formation parameter of interest. The method includes placing a tool into communication with the formation to test the formation, determining a first formation characteristic during a first test portion, initiating a second... | 03/14/2006 |
| 6997055 | System and method for determining formation fluid parameters using refractive index A method and apparatus is described for determining a parameter of interest of a formation fluid. The method comprises moving a tool attached to a tubular member along a borehole in a subterranean formation. The tool is used to determine the refractive index, pressu... | 02/14/2006 |
