# US 2014/0150546 A1 · Methods and Apparatus for Analyzing Operations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150546 A1 - Document ID: US20140150546A1 - Status: Published application - Kind: A1 - Application number: 14/125,295 - Filed: 2012-06-13 - Published: 2014-06-05 - Earliest claimed: 2011-06-13 - Assignees: Schlumberger Technology Corporation - Applicants: Schlumberger Technology Corporation - Inventors: Abdur Rahman Adil; Elena Borisova; Tullio Moscato - Web page: https://patentgrep.com/patent/US20140150546A1 ## CPC - G01V 9/005: {by thermal methods, e.g. after generation of heat by chemical reactions} - E21B 47/00: Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B21/08) - E21B 47/07: Temperature - E21B 47/10: Locating fluid leaks, intrusions or movements - E21B 47/103: using thermal measurements - E21B 49/08: Obtaining fluid samples or testing fluids, in boreholes or wells - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract Example methods and apparatus for analyzing operations are disclosed herein. An example method includes disposing a sensor in a fluid flow passageway. The sensor has a heater and a temperature sensor. The example method further includes obtaining a first response of the sensor to a fluid flowing in the fluid flow passageway and transmitting a signal to a tool to operate the tool. Operation of the tool is to affect a fluid parameter of the fluid. The example method also includes obtaining a second response of the sensor to the fluid flowing in the fluid flow passageway and determining if the tool has operated based on the first response and the second response. ## Claims ### Claim 1 A method, comprising: disposing a sensor in a fluid flow passageway, the sensor having a heater and a temperature sensor; obtaining a first response of the sensor to a fluid flowing in the fluid flow passageway; transmitting a signal to a tool to operate the tool, wherein operation of the tool is to affect a fluid parameter of the fluid; obtaining a second response of the sensor to the fluid flowing in the fluid flow passageway; and determining if the tool has operated based on the first response and the second response. ### Claim 2 (depends on 1) The method of claim 1 further comprising determining a first velocity of the fluid based on the first response and determining a second velocity of the fluid based on the second response. ### Claim 3 (depends on 1) The method of claim 1 further comprising determining a first temperature of the fluid based on the first response and determining a second temperature of the fluid based on the second response. ### Claim 4 (depends on 1) The method of claim 1 further comprising determining a first fluid flow direction based on the first response and determining a second fluid flow direction based on the second response. ### Claim 5 (depends on 1) The method of claim 1 wherein the tool comprises a gun and wherein transmitting the signal to the tool comprises transmitting a signal to the gun to fire the gun. ### Claim 6 (depends on 1) The method of claim 1 wherein the tool comprises a valve and wherein transmitting the signal to the tool comprises transmitting a signal to the valve to actuate the valve. ### Claim 7 (depends on 1) The method of claim 1 wherein determining if the tool has operated comprises comparing the first response to the second response. ### Claim 8 (depends on 1) The method of claim 1 further comprising: comparing the second response to an estimated response of the sensor; and determining if the tool has operated properly based on the second response and the estimated response. ### Claim 9 (depends on 1) The method of claim 1 further comprising transmitting a signal indicative of one of confirming the tool has operated or confirming that the tool has not operated. ### Claim 10 A method, comprising: disposing a first downhole tool in a wellbore, the first downhole tool including a sensor having a heater and a temperature sensor; determining a first value of a fluid parameter of a fluid adjacent the first downhole tool via the sensor; determining a second value of the fluid parameter via the sensor; and based on the first value and the second value, determining if a second fluid has flowed into the wellbore. ### Claim 11 (depends on 10) The method of claim 10 further comprising transmitting a signal to at least one of the first downhole tool and a second downhole tool to operate the one of the first downhole tool and the second downhole tool to flow the second fluid into the wellbore. ### Claim 12 (depends on 11) The method of claim 11 further comprising comparing the second value to an estimated value and determining if the one of the first downhole tool and the second downhole tool has operated properly based on the second value and the estimated value. ### Claim 13 (depends on 11) The method of claim 11 wherein the first downhole tool comprises a gun and wherein transmitting the signal to the one of the first downhole tool and the second downhole tool comprises transmitting a signal to the gun to fire the gun. ### Claim 14 (depends on 12) The method of claim 12 wherein the second downhole tool comprises a valve and wherein transmitting the signal to the one of the first downhole tool and the second downhole tool comprises transmitting a signal to the valve to actuate the valve. ### Claim 15 (depends on 10) The method of claim 10 wherein the fluid parameter is one of a fluid velocity, a fluid temperature, or a fluid flow direction. ### Claim 16 A method, comprising: disposing a first downhole tool in a wellbore, the first downhole tool including a sensor having a heater and a temperature sensor; determining a first fluid parameter value of a fluid in the wellbore via the sensor; transmitting a signal to one of the first downhole tool or a second downhole tool to perform an operation; determining a second fluid parameter value of the fluid via the sensor; and determining if the operation is properly performed based on the first fluid parameter value, the second fluid parameter value, and an estimated fluid parameter value. ### Claim 17 (depends on 16) The method of claim 16 wherein the operation comprises perforating a casing and wherein transmitting the signal to the one of the first downhole tool or the second downhole tool comprises transmitting a signal to a gun to fire the gun to perforate the casing. ### Claim 18 (depends on 16) The method of claim 16 wherein the operation comprises actuating a valve and wherein transmitting the signal to the one of the first downhole tool or the second downhole tool comprises transmitting a signal to the valve to actuate the valve. ### Claim 19 (depends on 16) The method of claim 16 further comprising transmitting a signal indicative of one of confirming the tool has operated properly or confirming that the tool has not operated properly. ### Claim 20 (depends on 16) The method of claim 16 wherein determining the first fluid parameter value comprises determining one of a first fluid velocity, a first fluid temperature, and a first fluid flow direction and determining the second fluid parameter value comprises determining one of a second fluid velocity, a second fluid temperature, and a second fluid flow direction.