A recent innovation in oil and gas technology is cerT&D™, a system for automated casing monitoring that is based on a complex software algorithm. NOV originally developed this technology as a data monitoring and collection solution, but improvements to the software have since resulted in this unique new application.
The evolution of casing design seeks to ensure that casing gets to bottom more effectively and safely. Torque and drag assert significant influence on casing operations, driving NOV's development of the cerT&D system to truly track these trends in real time during the casing run. Information on downhole friction and hole issues during deviated drilling operations is collected automatically in real time, eliminating the need for manual data entry and reducing the risk of human error.
Though tracking torque and drag values has traditionally been done during drilling, tripping, and casing runs, the time lag between recording the data and analyzing findings reduces efficiency and prevents quick action to address issues. The cerT&D system ensures that data on catastrophic events is available the instant they occur, allowing clients to take immediate remedial action and reach total depth (TD) without damage to the equipment and/or the casing.
The cerT&D system has seen application in automated casing monitoring on several projects. One, for Three Rivers Operating Company (3ROC), who were drilling in Culberson County, Texas, saw NOV using the system to develop a casing model to understand where torque and drag were approaching the helical buckling limit. Using the cerT&D system allowed 3ROC to avoid the casing passing the tensile limit capacity of the rigsite/pipe equipment, and 3ROC reached TD without any damage to the equipment or casing. Another project for a client operating in the Montney Shale, Canada, saw similar application in a three-well batch-drilling campaign.
Automated casing monitoring using this system is featured in this month's issue of World Oil in an article by Stephen Forrester, Andrew Creegan, Ricardo Borjas, and Angel Perdomo (NOV) as well as 3ROC collaborator Jennings Caraway.Read the full article here.
Published Date: 2017-01-26
Source: National Oilwell Varco