Bowen Casing Spear Calculator vs Pason

NOV Bowen Casing Spear System Calculator helps to determine the overall load rating and mode of failure for the spear, mandrel, grapple, and casing in each application. The strengths in the instruction manual are based on the Mandrel tensile strength only and does not consider the entire system together. We are now able to model the entire system including Mandrel, Grapple, and Casing together. Our calculations were developed based on feedback from the field, various scale lab testing up to failure, and FEA models. Important assumptions: - We consider the catch range for the Grapple as well as API tolerances per API Specification 5CT - We always take the worst-case scenario as the maximum pull value (Grapple range or max API tolerance) since it results in lowest contact between Grapple and Mandrel Helix - Ratings are only valid if fish is within catching range of the Grapple. - Casing ID is calculated based on OD and Weight if those are manual inputs - For lighter casing weights, the casing contributes more significantly to reducing system ratings than it does for heavier weight casing which can asymptotically approach the publish Mandrel tensile strength in many cases Calculated values are theoretical yield strengths and are considered accurate to within +/-20%. They assume the worst case scenario based on API tolerance. All strengths assume straight and steady pulling of a fully engaged round fish. Any irregularities in the fish ID/OD, damage to the grapple or mandrel, or jarring can reduce the strength substantially. Ratings are based on Grapple range only. These values are presented without any safety factor. Please contact NOV Engineering if there are any questions.

Pason Live delivers your real-time drilling data to you anytime, anywhere. It provides fast and secure data access enabling you to make time-sensitive decisions about your active wells when it matters most. - Secure access to your real-time data - Enhance your data view with the customizable display - View memos for more information about your well Use Pason Live to access your well information: - Access real-time well information securely via 1-second updates - Display a list of all your active wells with drilled depth for each well - Keep your well data secure with encrypted data transmission Customize your display to better view your data: - Zoom in and out on details of a graph - View data in boxes view - Customize the scale settings for your drilling parameters - Configure predefined templates to save and quickly access your preferred trace views - Choose units for your drilling parameters and define your trace colors View memos for more information about your well: - View a complete list of memos for a well - View memos in the trace view - Select and read individual memos - Send memos to the rig Pason, the Pason stylized logo and Live are trademarks of Pason Systems Corp.