National Oilwell Varco, L.p.

Patrick A Kelleher

Kenneth Ray Newman

Trevor Pugh

Trevor K C Pugh

Systems and techniques for non-contact measurement of coiled tubing motion are disclosed. In one embodiment, a system includes a laser source and a laser motion sensor. The laser source is configured to provide laser light that illuminates the coiled tubing as the tubing moves. The laser motion sensor is configured to collect and process laser speckle images and compute measurements of coiled tubing movement based on the laser speckle images.

Methods and apparatus for determination of parameters related to the movement of a coiled tubing string

A system for measuring at least one parameter of moving cable, the system including a system power source, a digital camera adjacent a moving cable for taking digital images of the cable as the cable moves past the digital camera, the digital camera producing signals corresponding to the digital images, a signal processor for receiving the signals from the digital camera and for processing the images to produce processed image data, the signal processor for calculating measurements of the at least one parameter of the cable based on the processed image data, the system power source for powering systems devices, e.g., the digital camera and/or the signal processor. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).

Growing community of inventors

Conroe, TX, United States of America

Patrick A Kelleher