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Extended reach wells: Difference between revisions
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==Benefits of extended-reach wells== | ==Benefits of extended-reach wells== | ||
Extended-reach wells are expensive and technically challenging.<ref name="r1" /> <ref name="r2" /> <ref name="r3" /> <ref name="r4" /> <ref name="r5" /> <ref name="r6" /> <ref name="r7" /> However, they can add value to drilling operations by making it possible to reduce costly subsea equipment and pipelines, by using satellite field development, by developing near-shore fields from onshore, and by reducing the environmental impact by developing fields from pads. | Extended-reach wells are expensive and technically challenging.<ref name="r1" /> <ref name="r2" /> <ref name="r3" /> <ref name="r4" /> <ref name="r5" /> <ref name="r6" /> <ref name="r7" /> However, they can add value to drilling operations by making it possible to reduce costly subsea equipment and pipelines, by using satellite field development, by developing near-shore fields from onshore, and by reducing the environmental impact by developing fields from pads. | ||
==References== | ==References== | ||
Revision as of 13:52, 23 December 2013
An extended-reach well is one in which the ratio of the measured depth (MD) vs. the true vertical depth (TVD) is at least 2:0.
Extended reach well achievement records
MD/TVD ratios
The current world record is Brintnell Well 2-10 (Amoco in Canada), with the highest MD/TVD ratio of 8.00. The top four wells are as follows.
- Amoco Brintnell 2-10 (Wabasca): MD/TVD = 8.00
- Amoco Brintnell 1-18 (Wabasca): MD/TVD = 7.39
- Maersk Qatar BA-26 (Al Shaheen): MD/TVD = 7.04
- BP Wytch Farm M16z: MD/TVD = 6.89
- BP Wytch Farm Well M16z still holds the world record MD and horizontal departure (MD = 37,001 ft, and departure = 35,197 ft)
Horizontal departure limits
Other notable extended-reach-drilling (ERD) achievements in pushing the horizontal departure limit are:
- 9,000 to 10,000 ft TVD: Phillips (Xijiang, China) = 8 km, Norsk Hydro (Oseberg, Norway) = 7.8 km, Woodside (Goodwyn, Australia) = 7.4 km, and Statoil (Sleipner, Norway) = 7.4 km
- 13,000 to 15,000 ft TVD: Woodside (Goodwyn, Australia) = 7.4 km, and Statoil (Sleipner, Norway) = 7.4 km
- More than 20,000 ft TVD: Shell (Auger, U.S.A.) = 3.9 km
Benefits of extended-reach wells
Extended-reach wells are expensive and technically challenging.[1] [2] [3] [4] [5] [6] [7] However, they can add value to drilling operations by making it possible to reduce costly subsea equipment and pipelines, by using satellite field development, by developing near-shore fields from onshore, and by reducing the environmental impact by developing fields from pads.
References
- ↑ Scott, P.W. 1991. Increasing Reach From 3,000 m to 5,000 m. Presented at the SPE/IADC Drilling Conference, Amsterdam, Netherlands, 11-14 March. SPE-21983-MS. http://dx.doi.org/10.2118/21983-MS.
- ↑ Payne, M.L., Abbassian, F., and Hatch, A.J. 1995. Drilling Dynamic Problems and Solutions for Extended-Reach Operations. In Drilling Technology, ed. J.P. Vozniak, PD-Volume 65, 191–203. New York: ASME.
- ↑ Modi, S., Mason, C.J., Tooms, P.J. et al. 1997. Meeting the 10km Drilling Challenge. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 5-8 October. SPE-38583-MS. http://dx.doi.org/10.2118/38583-MS.
- ↑ Guild, G.J., Hill, T.H., and Summers, M.A. 1995. Designing and drilling extended reach wells: Part 2. Petroleum Engineer International 67 (1): 35-41.
- ↑ Sonowal, K., Bennetzen, B., Wong, P., Isevcan, E., 2009. How Continuous Improvement Lead to the Longest Horizontal Well in the World. Presented at the SPE/IADC Drilling Conference and Exhibition, Amsterdam. SPE-119506.
- ↑ Walker, M.W., Andrew J. Veselka, A.J., Harris, S.A., 2009. Increasing Sakhalin Extended Reach Drilling and Completion Capability. Presented at the SPE/IADC Conference, Amsterdam. SPE-119373.
- ↑ Walker, M.W., 2012. Pushing the Extended Reach Envelope at Sakhalin: An Operator’s Experience Drilling a Record Reach Well. Presented at the SPE/IADC Conference, San Diego. SPE-151046.