Published: 01/01/2010
Published: 01/01/2010
Well Information |
|
| Location | Offshore, US |
| Date | October 2009 - January 2010 |
| Total Depth | over 37,000 ft (11,277 m) |
| Intervals drilled | over 26,800 ft (8,168 m) of 12 ¼-in? hole |
| over 2,200 ft (670 m) of 8 ½-in? hole (to TD) | |
| Well type | Extended-Reach 0° 88° 45° (at TD) |
| Disposal method | CRI |
DETAILS
In this area, the operator relies on rig site mud engineering
consultants. Accordingly, M-I SWACO worked very closely with the
operators drilling team and the mud engineering consultants for the
entire duration of the project. Mud samples were shipped from the rig site to
M-I SWACO regional technical support lab every two to three days for HTHP
rheology testing. Afterwards, M-I SWACO Technical Services in Houston used the
results to better calibrate the VIRTUAL HYDRAULICS wellbore simulator to
accurately monitor the downhole cleaning, ECDs and ESDs.
Based on the very frequent HTHP rheology tests and the VIRTUAL HYDRAULICS hole cleaning simulations, the rheological properties of the fluid were lowered to the point of providing very good ECD and SPP without compromising the cuttings carrying capacity. The high quality wellbore and its cleanliness were confirmed by running the 27,274 ft. (8313 m) of 9 5/8-in. liner in the 12 ¼-in. intermediate hole problem-free to TD.
"We now have successfully landed the 9 5/8-in. liner. I personally have been involved with a number of world records over the years, but this accomplishment in my book far exceeds all of these."
Operator's Drilling Operations Superintendent
Questions? We’ll be glad to answer them.
If you’d like to know more about the Megadril system and how it’s performing for our other customers, please call the M-I SWACO office nearest you.
Challenge: The operator programmed an extended reach well that posed a number of technical demands, including an extremely long 27,274 ft ( 8,301 m) 9 5/8-in. liner in the 12 ¼-in. hole. In addition, the well was designed with more than 6.3 miles (10.14 km) of lateral offset, which was restricted by extremely limited deck space and pit capacity on the rig.
Solution: M-I SWACO recommended the MEGADRIL oil-base drilling fluid system with MEGAMUL, a single-drum emulsifier/wetting agent package that simplifies maintenance, logistics, and reduces inventory on location.
Results:
