Ann: West Mailisu No 2 Well Update , page-9

Spot on vamman,GP should have thought ahead and accounted for every possibility.
This is a classic case of penny wise pound foolish.


Caspian Chief Executive Officer Graeme Parsons said the clarification of the presence of oil in Bed
III rather than Bed II is good news as Bed III is likely to be more extensive and have better reservoir
characteristics.

Is the problem(low porosity)(presuming porosity is the the problem)will the flowrate be inhanced by radial drilling?

Not according to Tehtys Petroleum.

NU-116 – is a newly-drilled vertical well in the north-west of the field. This well has never really produced any significant quantities of oil and the consensus of opinion is that the well is located in a part of the field with exceptionally low porosity and permeability. It was hoped that laterals drilled from this well might extend beyond this poor poro-perm area and access reserves in a more productive part of the field. In total, two levels of laterals (each of 4 x 100m) were radially drilled from open hole. However, despite having drilled a total of 8 laterals from this well, results have been somewhat disappointing. Oil production prior to radial drilling was 1.25 bopd, and after radial drilling it increased to 5 bopd.

I trust I'm wrong because radial drilling could enhance production hugely(from the same report)

U-79 – is a vertical well located slightly north of centre of the field, and is the only cased-hole well candidate on which radial drilling operations were performed. In total, four laterals were drilled (each 100m in length). Due to difficulties in initiating these laterals, two were drilled at 2436.7m and a further two were drilled at 2476m. It is believed that the problems encountered in drilling the final two laterals may have been due to a poor cement bond between the casing and the formation. Oil production from this well increased from 10.6 bopd to 54 bopd after radial drilling. This represents an increase of 43.4 bopd (409%).

409 percent increase,not to shabby,Tehtys,also seem to have acidisation worked out as well.
GP should go for broke IMHO and acidise the well in conjunction with the radial drilling.


http://www.rogtecmagazine.com/blog/tag/radial-drilling/

http://www.radjet.com/

http://www.tethyspetroleum.com/tethys/index.action

Raider