This comprehensive resource introduces the basic
principles and practices of underbalanced well construction applications,
extending the concepts developed in GTI's "Underbalanced Drilling Manual"
(GRI-97/0236) to initial well completions, live interventions, and workovers.
Summary: This
comprehensive resource introduces the basic principles and practices of
underbalanced well construction applications, extending the concepts developed
in GTI's "Underbalanced Drilling Manual" (GRI-97/0236) to initial well
completions, live interventions, and workovers. The term underbalanced implies
that formation pressure is greater than the hydrostatic pressure exerted by the
fluid column in the wellbore. Working in underbalanced conditions significantly
reduces the risk of formation damage caused by drilling and completion fluids
invading hydrocarbon bearing zones, and optimizes well productivity. The CD-ROM
presents key inflow performance relationships, which are vital to planning a
successful completions program. It also provides practical guidelines regarding
completion fluids, cementing, perforating, managing risk, and selecting
completion candidates and methods. Multilateral completions, well servicing, and
safety, environmental, and regulatory considerations are also discussed. An
extensive Technical Resources section contains numerous references and
abstracts.
