Tuesday, July 16, 1:00pm

Mr Jeremy Meyer

PhD Candidate, NCPGG, The University of Adelaide

Reducing risk in under-balanced drilling  


Under-balanced drilling (UBD) provides many advantages over conventional drilling, including increased rate of penetration and decreased formation damage resulting in greater production rates. However, UBD is associated with higher risks and potentially greater expense than conventional drilling. The decision to drill under-balanced wells requires knowledge of the risks involved. One such risk is the risk of wellbore collapse.

The potential for wellbore collapse can be determined through knowledge of the in situ stress field. The in situ stress field can be determined from data routinely collected during petroleum exploration and production and be combined with previous drilling experience and/or rock test data to calculate the likely hood of wellbore collapse. This information can increase the chance of successful UBD and lead to more efficient production through improved planning and well productivity. This talk discusses the advantages of UBD and the use of the in situ stress field for predicting wellbore stability in UBD wells.

Biography of the Speaker

Jerry completed his B.Sc in Mathematical and computer sciences at the University of Adelaide in 1995. He completed his Honours degree in geophysics at the University of Adelaide in 1996. He commenced his Ph. D. studies at the NCPGG in 1997. His Research has focused on the determination of the in situ stress tensor in the oil patch and the development of software to simplify this and investigate the implications of the in situ stress field for the petroleum exploration and production. The thesis awaits company approval for submission. Member PESA, SPE.