October 2007

Major Chinese field evaluated using combined seismic and well logging methods

In Lunnan field, an Ordovician carbonate buildup in the Tarim basin of western China, the reservoir was identified and characterized using a combination of seismic techniques and well logging methods. The seismic techniques included 3D seismic visualization and seismic attribute analyses such as coherence and root-mean-square amplitude. Well logging methods used were Formation Micro-Imaging (FMI), Electric Micro-Imaging (EMI) and Dipole Sonic Imaging (DSI). The research indicated that the Lunnan Ordovician buried hill is an oil-producing reservoir that developed under the unconformity, with a thickness of 0-150 m. The slope of the buried hill was determined to be the best location for development of the reservoir. Using the above methods, the exploration success rate was increased by 117%, and crude oil production increased to over 300 times its pre-characterization rate. The reservoir characterization also enabled a major upward re-evaluation of Lunnan field’s in situ resources.

Please Log IN view this article.

Not yet a subscriber? For just $149/year, you can claim unlimited access to World Oil's content.*

Each subscription includes: 

  • Unlimited access to all content on WorldOil.com
  • Exclusive drilling forecast data, by state, country and region
  • State-by-state results from the survey of U.S. operators
  • Updated producing oil and gas well figures, by state
  • Exclusive access to World Oil's conference presentations
  • Proprietary data tables covering casing, tubing, drill bits and fluids
  • Exclusive World Oil maps (published three times per year)
  • Daily coverage of industry news and developments\
  • Industry whitepapers, webcasts, videos and supplements.

Start your subscription today! 



*Access will be granted the next business day.
Connect with World Oil
Connect with World Oil, the upstream industry's most trusted source of forecast data, industry trends, and insights into operational and technological advances.