from another BB ... this man has the goods. Mui good gawd, if people have really read up on all the fundamantals and NRs and do not see an incredible opportunity here they are deaf, dumb, lazy and blind ... but of course, most have not:
Some might be wondering what coiled tubing is all about still even after a link to Schlumberger on the subject in a previous post.
The following link has considerable information and depth on the subject.
P17 is a good place to start for application to BHN-1. P4 also gives general applications.
We know that BHN-1 has been installed as a producing well. The only issue is to complete the well so that it can flow, hopefully, oil to surface.
BHN-1 needs to be cleaned to remove crud downhole leftover from the drilling operation. P17 clearly shows that Coiled tubing can be used to:
1] Remove sand or fill from a wellbore
2] Remove Scale (by hydraulic, or mechanical means)
Once the wellbore has been made squeaky clean, the next step is to perforate the well, item "3" on RHS of list.
3] Perforating
You then need to acidize to remove the well bore damage from the drilling mud left in the formation from the drilling operation and to dissolve any offending cement that got squeezed out into the formation.
4] Fracturing/acidizing a formation [This can be repeated multiple times over a several hour time frame. See P51 & 52 of link below]
Once the acid has done its thing, you try to get the well to flow. This might happen naturally once valves are opened at surface to create a differential pressure between the "high" in the formation to the "low" at surface. If this doesn't work, you can squirt some nitrogen gas downhole to lighten the fluid column to provide extra oomph to get the well to flow.
5] Unloading a well with nitrogen [IF required]
Once flow has been demonstrated for the required time period [can be long, or short], you need to isolate this zone to test the next zone higher up.
6] Setting a plug or packer, or Straddles for zonal isolation
You then repeat "3, 4 & 5" above. Once finished that zone, you repeat "6" and then do "3, 4 & 5".
Once all the zones are tested, you then either leave the last completion as the producing interval, or remove any plugs, or packers to get the desired configuration for production.
Most importantly, you then issue a news release stating how wonderful the well test for BHN-1 was [after perusal and approval by the Tunisians of course because flow rates are included... at least we hope they are!! ].....
jwall
