ESTIMATING DRILLING COSTS-1: Joint association survey, mechanical risk index methods common in GOM

Over the past several decades, various methods have been proposed to evaluate drilling costs and complexity, but because of the large number of factors and events that affect drilling performance, predictive models have been difficult to construct.The joint association survey (JAS) and mechanical risk index (MRI) are the most popular methods used to evaluate drilling costs and complexity in the US Gulf of Mexico, and specialized indices have been introduced to characterize the complexity of drilling directional and extended reach wells.Quantifying well costs and complexity is complicated by restrictions on data collection and availability, constraints associated with modeling, or combinat...

Why Register?

Non-subscribers can only view whitepapers by providing name, home and email address, phone number and other information and comment on/rate articles.

Why Subscribe?

Oil & Gas Journal subscribers with login credentials can access these premium features of OGJ Online:

  • Current Issue – an html version of the current week's issue of Oil & Gas Journal.
  • Past Issues – An Electronic OGJ Archive. A keyword-searchable archive of all issues of Oil & Gas Journal dating back to 1990; also searchable by issue date.
  • Market Journal – a weekly round-up of the oil and gas markets, with observations from leading analysts.
  • Editor's Perspective – a short article of insight and opinion by the Editor of Oil & Gas Journal.
  • OGJ Industry Stats – quick access to current industry statistics from Oil & Gas Journal.
  • OGJ Survey Downloads - quick access to exclusive reports from Oil & Gas Journal.


Subscriber Help or Subscribe

Oil & Gas Journal Subscribers: Have your subscription number (from the mailing label on the cover of your Oil & Gas Journal) and e-mail address ready to set up your online account through Customer Service Assistant.

If you're not an Oil & Gas Journal subscriber, start a subscription and gain access to the subscriber areas of OGJ Online now.

Stay Connected