17. alternate ML ERD - Workshop on Multilateral and...

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Workshop on Multilateral and Extended Reach Wells Jerome J. Schubert, TAMU Bjorn Gjorv, TAMU Steve Walls, Cherokee Offshore Engineering
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Outline Introduction to Extended Reach and Multilateral Wells Describe ERD and ML levels Application Economic benefits examples
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Outline, con’t. Technical difficulties Lost circulation and other well control problems Torque, drag, and buckling Casing wear Cementing
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Outline, con’t. New drilling technologies that can enhance ML/ERD Dual Gradient Drilling Expandable tubulars High lubricity muds Hole cleaning
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Introduction to Extended Reach and Multilateral Wells Describe ERD and ML wells
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Wytch Farm O&GJ, Jan. 19, 1998, p.24 SPE 28293 (1994)
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REF: O&GJ, Jan. 19, 1998, p.24
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Wytch Farm M11 Well Stepout (Horiz. Depart.) = 33,181 ft Exceeded previous record by 6,729 ft Measured Depth = 34,967 ft True Vertical Depth (at TD) = 5,266 ft Time to drill and case = 173 days M11 is the 14th ERD well at Wytch Farm REF: Anadrill Press Release 1-23-98
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Overview cont’d One third of reserves are offshore under Poole Bay ERD project began in place of an artificial island in 1991 Saved 150 million in development costs Development time saved - 3 years Scheduled with reach of 6.2 km Prod. before ERD project = 68,000 BOPD Prod. with 3 ERD wells = 90,000 BOPD
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Multilaterals
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Outline Figs. 3-6 Advertisements, PE Int. Figs. 7-9, OGJ, Dec. 11, 1995 p.44 Figs. 10, 11, OGJ, March 16, 1998 p.76 Figs. 12-17, OGJ, Dec. 1997, p.73 Figs. 18-24, OGJ, March 23, 1998 p.70 Oil & Gas Journal, Feb. 28, 2000, p.44
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Multilateral Completions Levels 1 & 2
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Multilateral Completions Levels 3 & 4
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Multilateral Completions Levels 5, 6 & 6B
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This note was uploaded on 10/30/2011 for the course PETROLEUM 661 taught by Professor Dr.jeromej.schubert during the Fall '11 term at Texas A&M University-Galveston.

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17. alternate ML ERD - Workshop on Multilateral and...

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