Publication Name: The Cooper & Eromanga Basins Australia
Authors: K.B. English
Date Published: June 1989
Number of Pages: 30
Reference Type: Book Section
Abstract:
Regulations under the South Australian Petroleum Act 1940 regarding casing shoe setting depths have beenredrafted. The new Regulations do not alter the preexisting intent with regard to casing design in relation to
well control. The need to redraft the Regulations arose from a perceived gap between existing well design criteria, current industry basic well control courses, and field practices.
A deficiency in casing design methods using a single step translation of influx volumes from total depth to surface conditions is recognised. A solution to the problem of potential open-hole fracture, using three simple simultaneous equations for the dynamic translation of the influx to the casing shoe, is derived. This also provides a method of calculating the required casing setting depth for a given set of conditions. Consequently, a classification of well types in relation to risk factors is proposed.