Schlumberger Technology Corporation

Services Petroliers Schlumberger

Nikolay Baklanov

Sarmad Adnan

Xuedong Yang

Toshimichi Wago

Benjamin Jean Yvon Durand

Brandon Christa

Maxim Klyuzhev

Thomas Mauchien

Evgeny Khvoshchev

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 monitoring integrity of a pump. The method may include recording timing information of the pump during operation while simultaneously sampling acoustic data with a high speed equidistant acquisition mechanism or at a rate based on the speed of the pump in operation. The acquisition of acoustic data is followed by evaluation thereof. Such techniques may improve resolution of acquired data while substantially increasing processor capacity for evaluation. A pump integrity monitor for carrying out such techniques is also described.

Pump integrity monitoring

A method of enhancing acoustic pump data for monitoring of pump condition in operation. The enhancement may be in the form of a substantial reduction in the amount of data to be processed by firmware to a much more manageable level. This may be achieved through pre-filtering of acquired acoustic data, computing frequency momentum, and by application of a median filter to the acoustic data. Regardless, a thresholding technique that uses features vector including but not limited to double-threshold derived from statistics of enhanced amplitudes, may be employed whereby enhanced acoustic data is boiled down to a series of potential acoustic events of particular widths. These widths may represent a duration of each acoustic event and be checked for correlation with the speed of the operating speed of the pump. Acoustic events that correlate with an operating speed of the pump may represent an unhealthy condition of the pump such as where the width is about the duration of one half of a cycle of the pump and a leaky pump valve presents itself for this same period of time.

Growing community of inventors

Sugar Land, TX, United States of America

Nikolay Baklanov