Class / Patent application number | Description | Number of patent applications / Date published |
374136000 | Geophysical (e.g., well bore, underwater) | 11 |
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 |
20100238971 | FLUID LEVEL INDICATION SYSTEM AND TECHNIQUE - A technique that is usable with a well includes changing the temperature of a local environment of a distributed temperature sensor, which is deployed in a region of the well and using the sensor to acquire measurements of a temperature versus depth profile. The region contains at least two different well fluid layers, and the technique includes determining the depth of a boundary of at least one of the well fluid layers based at least in part on a response of the temperature versus depth profile to the changing of the temperature. | 09-23-2010 |
20110134958 | METHODS FOR ASSESSING A TEMPERATURE IN A SUBSURFACE FORMATION - Methods for assessing a temperature in an opening in a subsurface formation are described herein. A method may include assessing one or more dielectric properties along a length of an insulated conductor located in the opening and assessing one or more temperatures along the length of the insulated conductor based on the one or more assessed dielectric properties. | 06-09-2011 |
20110206085 | METHOD FOR INSTALLING GEOTHERMAL ENERGY PROBES AND GEOTHERMAL ENERGY PROBE ARRANGEMENT - Geothermal energy probes, in particular at least a first group of two to five geothermal energy probes, are installed in the ground from a starting point in the radial direction such that the corresponding spreading angle between adjacent geothermal energy probes is at least 72° and the corresponding differential inclination angle is at least 10°, wherein the differential inclination angle continuously increases or decreases from one geothermal probe of the first group to the next. | 08-25-2011 |
20120093193 | ELECTRONIC APPARATUS OF A DOWNHOLE TOOL - An electronic apparatus ( | 04-19-2012 |
20130266039 | SYSTEM AND METHOD FOR WELLBORE MONITORING - A system for monitoring a borehole in an earth formation includes: a borehole string configured to direct a fluid into the earth formation; at least one optical fiber sensor disposed on the borehole string at a fixed location relative to the borehole string, the optical fiber sensor including a plurality of measurement units configured to generate measurements of at least one of strain and deformation of the borehole string; at least one temperature sensor configured to measure a temperature at a plurality of locations along the length of the optical fiber sensor; and a processor configured to receive the measurements from the at least one optical fiber sensor, receive temperature measurements from the at least one temperature sensor, and identify a fluid leak in at least one of the borehole string and the formation based on a correlation of the optical fiber sensor measurements and the temperature measurements. | 10-10-2013 |
20140064329 | Monitoring Movement in Fluid-Containing Environment via Variable Heating - A geohydrology monitoring system is disclosed. In one example, the system includes a heating mechanism assembly including an array of heating elements disposed longitudinally within a fluid-containing environment so that portions of the heating mechanism assembly are at different positions lengthwise within the fluid-containing environment. The heating mechanism assembly is configured to impart energy to the fluid-containing environment such that heating provided at some locations varies from heating provided at other locations. The system includes a fiber optic distributed temperature sensor (DTS) disposed in proximity to the heating mechanism assembly and configured to sense temperature at a plurality of positions and at multiple times along the length of the fluid-containing environment. Based on output from the DTS, processing logic generates an output that indicates properties of, and movement of fluid within, the fluid-containing environment. | 03-06-2014 |
20140301426 | TEMPERATURE ASSESSMENT USING DIELECTRIC PROPERTIES OF AN INSULATED CONDUCTOR HEATER WITH SELECTED ELECTRICAL INSULATION - A system for assessing one or more temperatures in an opening in a subsurface formation includes an electrical conductor and electrical insulation at least partially surrounding the electrical conductor. The electrical insulation includes magnesium oxide and a ferroelectric material. An electrically conductive sheath at least partially surrounds the electrical insulation. A profile of one or more dielectric properties of the electrical insulation along a length of the electrical insulation is assessed during use to assess a temperature profile with spatial resolution along the length of the electrical insulation. | 10-09-2014 |
20150377008 | Assembly for Measuring Temperature of Materials Flowing Through Tubing in a Well System - An assembly for measuring a temperature of a fluid flowing through a tubing section is provided. The assembly can include the tubing section and a temperature measurement component in thermal communication with an inner diameter of the tubing section. A temperature of a fluid flowing through the tubing section can be detected using the temperature measurement component. | 12-31-2015 |
20160138384 | CONSTANT VOLUME TEMPERATURE TO PRESSURE TRANSDUCER FOR USE WITH RETRIEVABLE PRESSURE SENSOR ASSEMBLIES - A temperature sensor for measuring a temperature within a subsea installation includes a fixture portion coupled to the subsea installation and a retrievable portion that is selectively operable to couple to the fixture portion. The fixture portion includes a constant volume of a fluid disposed at a measurement point within the subsea installation. The retrievable portion includes a pressure sensing element operable to measure a pressure associated with the constant volume of fluid such that a temperature at the measurement point is determinable. | 05-19-2016 |
20160168980 | DUAL-ENDED DISTRIBUTED TEMPERATURE SENSOR WITH TEMPERATURE SENSOR ARRAY | 06-16-2016 |