US 12,188,343 B2
Sensor and actuator for autonomously detecting resistivity derivatives of wellbore fluids and closing fluid path
Hector Jesus Elizondo, Houston, TX (US); Ritesh Dharmendra Panchal, Houston, TX (US); Jinhua Cao, Houston, TX (US); Ishwar Patil, Houston, TX (US); and Paul J Jones, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jul. 27, 2022, as Appl. No. 17/815,248.
Prior Publication US 2024/0035370 A1, Feb. 1, 2024
Int. Cl. G06F 11/30 (2006.01); E21B 33/14 (2006.01); E21B 47/005 (2012.01)
CPC E21B 47/005 (2020.05) [E21B 33/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting the presence of a cement composition in a reverse cementing operation in a wellbore comprising:
introducing a sensor device into the wellbore, the sensor device comprising:
(A) a resistivity sensor configured to measure the resistivity of a fluid;
(B) an acquisition and measurement apparatus configured to:
(i) process the measured resistivity to determine an average derivative of resistivity with respect to time;
(ii) determine a plurality of slope changes based on the average derivative of resistivity with respect to time;
(iii) be pre-programmed with a slope change profile of the slope changes; and
(iv) receive readings from the resistivity sensor;
(C) an actuator configured to receive instructions from the acquisition and measurement apparatus; and
(D) a valve, wherein the valve is located inside of a casing string or tubing string, wherein the acquisition and measurement apparatus is configured to send instructions to the actuator to close the valve after the acquisition and measurement apparatus determines a desired slope change within the pre-programmed slope change profile;
pre-programming the acquisition and measurement apparatus with the desired slope change and the slope change profile;
introducing a first fluid into the wellbore;
introducing a cement composition into an annulus of the wellbore;
allowing the resistivity sensor to measure the resistivity of the first fluid and the cement composition; and
allowing the acquisition and measurement apparatus to instruct the actuator to close the valve.