CSEM performance-tracking improvements provide clearer results

摘要

An internal Statoil review of the CSEM performance in exploration shows clear progress with time from early to more recent surveys. The evaluation shows that the results of many of the early surveys are vague or inconclusive, while newer data have a risk impact. In the late 1990s, Statoil invented the use of the controlled-source electromagnetic (CSEM) method for remote identification of hydrocarbons in the marine setting. The method, referred to as Seabed Logging (SBL), was tested offshore Africa in 2000, and subsequent pilot tests proved CSEM as a tool with the potential to predict hydrocarbons before drilling.