BlockchainK2 Corp V.BITK

Feet on the Ground

[Grizzle1]

Guys

This is Captaincams follow up to his earlier DXE post on Investors Village. Very sensible techical positioning from someone who obviously knows the drill. Interesting his comments about keepting it simple and Blackreds view here that a sidetrack could be an option. Straight to Sidetrack as a semi appraisal?

GLA Griz

https://www.investorvillage.com/smbd.asp?mb=12050&mn=10421&pt=msg&mid=13292176

There is an intermediate casing string set above the Abiod. For whatever reason the Abiod came in low to predrill expectations. They drilled a smaller diameter hole below the bottom of the intermediate casing shoe down into and through 247 m of the Abiod chalk. Encountering mud losses and hole instability they decided to run a 7" liner though the bottom hole section and landed it at the bottom of the hole. At the top of the liner there would be a packoff, called a liner hanger packer, that is supposed to hold pressure inside the much larger intermediate and the liner. Remember the top of the liner is at the bottom the intermediate casing. They then ran 3 1/2" tubing down to the top of the liner but not too far down so that it would not obscure formation from the logging tools, the Sonic Scanner and the PST Pulsed Neutron tool. The internal diameter of the tubing string is 2.92" if it is standard weight, less if heavier. So the logging tools, perf guns and the coil tubing must have lower outside diameters than the inside of the tubing. So now in order to have a tool that would isolate individual zones or perforations would have to be about 2.5" in outside diameter and then have to expand out to the inside diameter of the 7" liner, about 5.5" or so. There are tools that can do this as I now understand and they are called inflatable packers, but, the more they have to expand the less pressure that they are able to hold. They are not simple tools and once run and set they would have to be retrieved if each of zones tested were productive. This introduces huge risk in my humble opinion and I would not want to be trying to retrieve inflatable packers with a coil tubing unit on a well that could flow 1000 to 10000 barrels of oil per day, mostly because of the financial but also the safety risk. If I have not explained well, I apologize but if this were my well I would minimize mechanical risk and keep it simple stupid. Prove that the structure can produce commercial quantities of oil and then drill an appraisal well with enough money in your pocket and optimise the completion on that well. Now you have gotten me on my soap box and again I apologize to the board for going overboard.
Cheers!
Captaincam.