| Patent application number | Description | Published |
|---|
| 20080223576 | Controlling pressure and static charge build up within an annular volume of a wellbore - A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid comprising at least one polymerizable monomer and at least one antistatic agent to control build up of static charge. The second fluid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated. | 09-18-2008 |
| 20080253230 | System and method for receiving and decoding electromagnetic transmissions within a well - Exemplary systems and methods are directed to transmission of electromagnetic (EM) pulses in a downhole environment, which is located below a surface of a landform. A sequence of EM energy pulses is generated from a signal generator located at the surface of the landform. The energy pulses are reflected at a ring frequency by one or more downhole transducers. The reflected energy pulse is received at a receiver, which is located at the surface, during a predetermined time interval. The receiver detects the received energy pulses through a time domain or frequency domain technique. The detected ring frequency is correlated to a parameter or condition of the downhole environment. | 10-16-2008 |
| 20080285619 | System and method for measuring temperature using electromagnetic transmissions within a well - Exemplary systems and methods are directed to measuring temperature in a borehole located below a surface of a landform using high-energy transmission. A sequence of electromagnetic (EM) energy pulses are generated from a signal generator located at the surface of the landform. The energy pulses are reflected at a ring frequency by one or more downhole transducers. The reflected energy pulses are received at a receiver, which is located at the surface, during a predetermined time interval. The receiver detects the received energy pulses through a time domain or frequency domain technique. Each detected ring frequency is correlated to an inductance of the associated downhole transducer. The inductance is correlated to a temperature of the borehole. | 11-20-2008 |
| 20090031796 | System and method for sensing pressure using an inductive element - Exemplary systems and method are directed to a sensing device, and to a pressure sensing system and method. An exemplary method includes supplying electromagnetic energy to a transducer which is configured to reflect the electromagnetic energy at a ring frequency determined by an inductance of the transducer, wherein the inductance changes in response to compression of the inductive element. The ring frequency of electromagnetic energy reflected by the transducer is correlated to a pressure value. | 02-05-2009 |
| 20090114178 | Fuel injection device including plasma-inducing electrode arrays - A plasma assisted combustion device includes a body formed of a dielectric material that defines a conical-shaped plasma chamber. A conical-shaped ground electrode is positioned in the plasma chamber. At least one support structure is coupled to the conical-shaped ground electrode so as to suspend the ground electrode in the plasma chamber thereby forming a gap between an outer surface of the body and the ground electrode. The support structure comprises an insulated material that is positioned on an outer surface so as to reduce the probability of generating an undesirable electrical discharge. A hot electrode that is energized with a high voltage that strikes a plasma discharge in the gap is positioned proximate to the plasma chamber. A fuel injector is positioned proximate to the conical chamber. The fuel injector includes a nozzle that converts a liquid fuel into an aerosolized high molecular weight fuel that sprays into the plasma chamber. The plasma in the gap cracks the aerosolized high molecular weight fuel into at least some lower molecular weight fuel and creates at least some free radicals and/or excited-state species. | 05-07-2009 |
| 20090133878 | Controlling the Pressure Within an Annular Volume of a Wellbore - A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated. | 05-28-2009 |
| 20090159361 | APPARATUS AND METHOD FOR MONITORING ACOUSTIC ENERGY IN A BOREHOLE - A system, method and device may be used to monitor acoustic energy in a borehole. Electromagnetic energy is used to energize a resonant circuit incorporating a sensor. The sensor modulates the electromagnetic energy in accordance with received acoustic energy and transmits the modulated energy so that it may be received and processed in order to obtain the desired measurements. | 06-25-2009 |
| 20090174409 | DOWNHOLE SENSOR INTERROGATION EMPLOYING COAXIAL CABLE - The present invention is directed to methods and systems for oil field downhole sensing and communication during drilling and/or production, wherein such methods and systems utilize coaxial cable to transmit electromagnetic (EM) energy, continuously or as a pulse, to passive downhole sensors. | 07-09-2009 |
| 20090317310 | FUEL INJECTOR UTILIZING NON-THERMAL PLASMA ACTIVATION - A non-thermal plasma assisted combustion fuel injector that uses an inner and outer electrode to create an electric field from a high voltage power supply. A dielectric material is operatively disposed between the two electrodes to prevent arcing and to promote the formation of a non-thermal plasma. A fuel injector, which converts a liquid fuel into a dispersed mist, vapor, or aerosolized fuel, injects into the non-thermal plasma generating energetic electrons and other highly reactive chemical species. | 12-24-2009 |
| 20100096138 | Controlling the Pressure Within an Annular Volume of a Wellbore - A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated. | 04-22-2010 |
| 20100163236 | Controlling the Pressure Within an Annular Volume of a Wellbore - A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated. | 07-01-2010 |
| 20100236780 | Controlling the Pressure within an Annular Volume of a Wellbore - A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated. | 09-23-2010 |
| 20110022336 | SYSTEM AND METHOD FOR SENSING PRESSURE USING AN INDUCTIVE ELEMENT - Exemplary systems and method are directed to a sensing device, and to a pressure sensing system and method. An exemplary method includes supplying electromagnetic energy to a transducer which is configured to reflect the electromagnetic energy at a ring frequency determined by an inductance of the transducer, wherein the inductance changes in response to compression of the inductive element. The ring frequency of electromagnetic energy reflected by the transducer is correlated to a pressure value. | 01-27-2011 |
| 20110026563 | PRESSURE SENSOR HAVING A ROTATIONAL RESPONSE TO THE ENVIRONMENT - Methods and systems of the invention are directed to a pressure sensor that includes a substrate, a first conductive plate, and a second conductive plate. The substrate is formed of a material having a low coefficient of thermal expansion (CTE). The first conductive plate is formed of a material having a CTE that is higher than the CTE of the substrate, and is attached to a first surface of the substrate. The second conductive plate is rotatably connected to the substrate through a hinge, and includes a portion that is adjacent to the first conductive plate. | 02-03-2011 |
| 20110068794 | TEMPERATURE AND PRESSURE TRANSDUCER - Methods for making and systems employing pressure and temperature sensors are described. Embodiments include a capacitive element including a first conductor plate and a second conductor plate. Each plate includes a conductor layer formed on a substrate. In a pressure sensor embodiment, seal is positioned at or near the edges of the conductor plates, and a gas retained in a gap defined between the plates. In a temperature sensor embodiment, the gap defined between the plates is in fluid communication with the external environment. | 03-24-2011 |
| 20110128003 | SYSTEM AND METHOD FOR MEASUREMENT INCORPORATING A CRYSTAL OSCILLATOR - A system, method and device for interrogating a downhole environment in a borehole beneath a surface includes a source of electromagnetic energy, operable to transmit an electromagnetic signal in the borehole, a sensor module, including a passive resonating circuit including a crystal oscillator having a resonant frequency that varies with changes in the condition in the downhole environment to reflect the electromagnetic signal and to modulate the electromagnetic signal in response to a condition in the downhole environment in the borehole and a detector positionable to receive the reflected modulated electromagnetic signal. | 06-02-2011 |
