The main objective of a primary cement job is to provide complete and permanent isolation of the formations behind the casing. To do this, cement must displace all mud from the annulus. After having used rules of thumb or semi-empirical models to design this displacement process for years the industry started to use displacement simulators in the late 90s. The most significant improvements made regarding these numerical simulations over the last years will be presented and the practical limitations of these new simulators discussed.
DeBruijn has 24 years of experience working in the oil industry, mostly in cementing. He has worked across Canada, North America and in Deepwater around the world supporting cementing and well integrity initiatives in almost every well environment: Arctic, CBM, CSS, Deepwater, ERD Heavy Oil, Horizontal, HPHT, Offshore, SAGD and Shale Gas wells. Gunnar received a B.Sc. in Mechanical Engineering in 1990 at the University of Alberta. He is registered as an SPE Professional, and a Professional Engineer in Texas, and Canada. Gunnar also contributes regularly to API Standards as a member of Subcommittee 10 on Well Cements. He is also active on standards such as API RP 90-1, API RP 90-2, API RP 96, API Bul. 97 which are relevant to Well Integrity.