http://motherjones.com/blue-marble/2010/06/bp-still-playing-dumb-about-size-gulf-disaster#newFor seven weeks, BP has insisted that measuring exactly how much oil is gushing into the Gulf of Mexico is a daunting—perhaps impossible—task. The depth of the well, and the volume of natural gas emitting from it, has made the flow rate "very, very difficult to estimate," BP has said, while its chief operating officer has emphasized the "huge amount of uncertainty" surrounding the question. But back in 2008, the company was singing a very different tune. In an in-house magazine, BP bragged about sophisticated technology it had developed to measure precisely the flow of oil and gas through pipelines.
The August 2008 issue of Frontiers, BP's technology and innovation magazine, includes a lengthy feature, titled "Listening to the Flow." The article boasts of the company's "expertise
flow measurement." Determining how much oil and gas is flowing out of a pipeline is "tricky to do," the article says. It explains that BP had developed a technology called sonar-based flow metering, in which the flow of hydrocarbons is measured using sonar sensors placed inside a pipe. This technology is "proving its worth in the company’s operations around the world," the article says, noting that BP "has pioneered the introduction of a new and very useful tool into the wider oil industry."
According to the article, BP tested its technology in 2004 on a wet gas pipeline in Alaska and had already introduced around 45 sonar meters to oil fields. The company's research and development program manager told the magazine that BP planned to use the devices on underwater wells, too.
Scientists from Woods Hole Oceanographic Institution have also developed acoustic technology. BP initially invited them to the site of the spill in early May, one scientist told a House panel last month, but then rescinded the invite. The Woods Hole team is now working on estimates as part of the government flow rate team.
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