Case History of the World's First Level 5 Multilateral Completed from a Semisubmersible Rig

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractMultilateral technology has become a catalyst for enabling deepwater development.This challenging environment dictates that functionality and junction integrity are key requirements for multilateral completions. For an injection well in the Voador Field, offshore Brazil, a TAML Level 5 multilateral completion was implemented from a semisubmersible rig to achieve the junction isolation required for this application. It is the intent of this paper to demonstrate that a complex TAML Level 5 multilateral completion can be professionally designed, managed, and implemented from a semisubmersible rig, while saving ten million dollars (US) in costs over conventional technology applied in this region. This will be accomplished by reviewing the operator's deepwater development philosophy, reservoir considerations, design, operational procedures, and overall cost information related to the completion. In addition, details of the challenges faced, problems solved, and lessons learned will be examined on the world's first TAML Level 5 multilateral well completed from a semisubmersible rig, the Petrobras 8-VD #6HP-RJS and #7HPA-RJS dual lateral injection well in the Campos Basin off the coast of Brazil. Voador Field Reservoir DevelopmentGeneral Philosophy and Strategy. The operator, Petrobras, is committed to advancing technologies that enable the development of deepwater reserves. This is not surprising since 73% of Brazil's current oil and gas equivalent reserves can be found in deep water (400 m to 1,000 m) and ultra-deep water (>1,000 m). In addition, it is anticipated that 60% of all SPE 56779Case History of the World's First Level 5 Multilateral Completed from a Semisubmersible Rig

Metodologia probabilística-possibilística para tratamento de incertezas na estimativa de tempos em poços de petróleo

“…Sejam dois especialistas, E 1 e E 2 , convocados para avaliar possível perda de tempo durante a construção da junção em um poço multilateral em sua primeira experiência em poço marítimo em águas profundas, como descrito por Pasicznyk et al (1999) e ilustrado na Figura 3.2. Tabela 3.1 -Exemplo de teoria da evidência…”