by rockdoc123 » Thu 19 Apr 2007, 10:58:09
$this->bbcode_second_pass_quote('', 'Y')ou seem to have confidence in missed oportunities and expensive technologies that are always 'just around the corner.'
the 'ladder' is a metaphor for new exciting technologies that seem to be constantly in development or in the prototype stage.
Hardly close to the truth. The advancements in technology as it relates to oil and gas exploration over the past twenty years have been astounding.
- in about a five year period the maximum water depth that was drilleable and then produceable from went from about 400 m to nearly 3000m. Technology such as tension leg platforms is fairly astounding to my mind.
- vibroseis technology during the period 1990 to about 1998 went through some huge changes (eg: larger vibrator trucks, variable frequency sweeps) all of which contributed to much better imaging of sub-surface targets.
- seismic processing throughout the nineties and right through to present continuously is going through significant changes. We went from simple processing of low fold 2D migrated data through the ability to process extremely high fold 2D data with a number of data transforms that improve signal to noise quality through to the ability to process huge volumes of 3D data in time throught to the ability to process that data as pre-stack depth migration data and finally to some very advanced processing techniques to look at things such as amplitude versus offset which have been a significant contributor to success in the GOM. Much of this is possible due to improvements in computing. When I started out in this business it required several boxes of punch cards to set up a simple processing flow for one 2D seismic line which would be run on a mainframe that took up half a floor of the building I worked in, the runtime usually would be overnight. Now it is possible for a geophysicist to run that same program with a few clicks of a mouse on his desktop Unix machine, the runtime usually enough to allow him to walk down the hall and get a cup of coffee.
- the advancements in drilling technology over the past 10 years are also astounding. During that time we have seen the invention of coiled tubing drilling and only a couple of years ago application of this same technique in a thousand metres of water depth. We've seen the advent of long reach horizontal drilling, multi-lateral completions and the eventual combination of maximum reservoir contact wells (MRC). Bit technology has also gone through continuous changes, the bits that come out each year generally cut better and last longer. We have also seen the advent of downhole steerable drill bits which allows for the high tech horizontal drilling to very finite targets. Coupled with steerable wellbores is the advent of LWD (logging while drilling) which started out as just including a simple gamma ray log run a few metres back from the bit to now where a full suite of logs can be obtained while drilling. This technology has reduced overall costs in the North Sea immensely and is partly responsible for making ultradeep water drilling economic.
- completion technology has also advanced considerably. Well-fracs used to be limited to shallow reservoirs where it was only needed to stimulate a few metres away from the wellbore to very deep, megafracs which can create stimulation hundreds of metres away from the wellbore.
I could go on and on with regards to this subect but I think my point is made. I am not aware of any technology as it relates to oil and gas that was promised but never delievered. Perhaps you might want to give some examples of these prototypes of which you speak?
The business is continually subject to change and everyone is focussed on "deeper, cheaper and better". Is there a limit to what technology will do for us? Probably, but I wonder if that isn't more a limitation of current human imagination.