One deployment of downhole tools to planned depth and retrieval through the rotary table.

Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards


An operating activity or any distinct task within it.

Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global Standards



Organization and sequence in time and space of an individual’s work tasks (2.17) or the combination of all human performance by one worker (2.4) within a work system (2.2). ISO 6385:2016(E)

Source: ISO 6385:2016, Ergonomics principles in the design of work systems, Third Edition, September 2016. Global Standards

Comments are closed.