Schlumberger Technology Corporation

University of Texas System

Services Petroliers Schlumberger

Xuedong Yang

Maxim Klyuzhev

Benjamin Jean Yvon Durand

Thomas Mauchien

Nikolay Baklanov

Todor K Sheiretov

Robert Kyle Wiesenborn

Bilal Akin

Pierre-arnaud Foucher

Brandon Christa

Amanda Olivio

Rodrigo Feliu

Rishi Mishra

Richard Woods

Tzy Yu Chow

Idalia Stevenson

Mohammad Irfan Uddin

Zhuangyao Tang

Jisheng Li

Yang Hu

A method for milling and removing debris in a wellbore, comprising: moving a collecting while milling (CWM) tool downhole into the wellbore; and conducting a first operation with the CWM tool, wherein the first operation comprises: a first cycle including operating a motor of the CWM tool at a first torque and a first speed, wherein the first operation includes milling an obstruction in a wellbore; and a second cycle including operating the motor of the CWM tool at a second torque and second speed to power a centrifugal pump to circulate wellbore fluid through a bailer of the CWM tool to collect debris, wherein the first torque is greater than the second torque and the second speed is greater than the first speed.

Real time automated control method for wireline downhole debris collecting while milling operation

A wireline shifting tool comprising an anchor, a linear actuator, and a shifter may be at least partially controlled by one or more measurements indicating an amount of force applied to the anchor, the linear actuator, the shifter, or a combination thereof. For example, a processor may receive the one or more measurements and perform a seeking operation or cause a graphical user interface (GUI) to display information that may inform a user regarding operations associated with the wireline shifting tool.

Wireline automation systems and methods

A measured electrical property may be used to control operation of a downhole device, which may be at least partially supported by additional downhole measurements consumed by the downhole device. For example, a downhole device may include an electrical sensor that measures an electrical property of electrical power provided to the downhole device. A processor of the downhole device may convert the measured electrical property to a quantized electrical property and determine a command or control action that corresponds to the quantized electrical property. The command or control action may be implemented to control operation of the downhole device.

Downhole device communication using measured electrical property of supplied power

Apparatus and methods for autonomously shifting a downhole sliding sleeve. A shift tool includes a shifter arm, an artificial neural network, and a control circuit. The artificial neural network is trained to identify engagement of the shifter arm with a shifting feature of a sliding sleeve. The control circuit is configured to extend the shifter arm at a first pressure for seeking engagement with the shifting feature of the sliding sleeve, and responsive to the artificial neural network recognizing engagement of the shifter arm with the shifting feature of the sliding sleeve, extend the shifter arm at a second pressure for shifting the sliding sleeve.

System and method for wireline shifting

A method of controlling a plurality of permanent magnet synchronous motors using a single inverter that includes obtaining an estimate of rotor position and speed individually for a plurality of permanent magnet synchronous motors. The method can include calculating the average rotor position from the obtained estimate of the rotor position for each permanent magnet synchronous motor of the plurality of permanent magnet synchronous motors. The method can include reconstructing a rotor permanent-magnet flux for each permanent magnet synchronous motor and transforming the reconstructed rotor permanent-magnet flux for each permanent magnet synchronous motor to average fluxes and average differential fluxes on an average d-q reference frame. The method can include obtaining the average current reference in the average d-q reference frame for the plurality of permanent magnet synchronous motors; and determining an inverter voltage reference.

Methods and systems for control of parallel connected motor drives

Systems and methods for driving a plurality of permanent magnet synchronous motors are provided. An embodiment of the system can include a first permanent magnet synchronous motor coupled to a first slip coupling, a second permanent magnet synchronous motor coupled to a second slip coupling, and the first permanent magnet synchronous motor and the second permanent magnet synchronous motor can be electrically connected in parallel on a bus.

Systems and methods for driving a plurality of motors

Growing community of inventors

Sugar Land, TX, United States of America

Xuedong Yang