Steering toward enhanced production

Oilfield Review

Volumn 17, Issue 3, 2005, Pages 54-63

  Chou, Lawrence ^a   Li, Qiming ^a   Darquin, Alexis ^a   Denichou, Jean Michel ^a   Griffiths, Roger ^a   Hart, Nick ^b   Mclnally, Alan ^b   Templeton, Gerhard ^b   Omeragic, Dzevat ^a   Tribe, Ian ^a   Watson, Kim ^c   Wiig, Margrethe ^d  

^a Maersk Oil North Sea UK Limited ^*

^b Maersk Oil North Sea UK Limited   (United Kingdom)

^c Phillips Research Center 224GB   (United Kingdom)

^d STATOIL   (Norway)

Author keywords

[No Author keywords available]

Indexed keywords

BOREHOLES; TOOLS;

LOGGING-WHILE-DRILLING (LWD) TOOL; TRANSVERSE COILS;

DRILLING;

EID: 29844436839     PISSN: 09231730     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Review

References (14)

1. Li Q, Omeragic D, Chou L, Yang L, Duong K, Smits J, Yang J, Lau T, Liu CB, Dworak R, Dreuillault V and Ye H: "New Directional Electromagnetic Tool for Proactive Geosteering and Accurate Formation Evaluation While Drilling," Transactions of the SPWLA 46th Annual Logging Symposium, New Orleans, June 26-29, 2005, paper UU.
2. Wiig M, Berg E, Kjærefjord JM, Saltnes M, Stordal EA, Sygnabere TO, Laastad H, Raeper G, Gustavsson E, Denichou J-M, Darquin A and Omeragic D: "Geosteering Using New Directional Electromagnetic Measurements and a 3D Rotary Steerable System on the Veslefrikk Field, North Sea," paper SPE 95725, presented at the SPE Annual Technical Conference and Exhibition, Dallas, October 9-12, 2005.
3. On propagation resistivity or induction logs, polarization horns are caused by a charge buildup at the boundary between dipping formation layers with different dielectric properties. When an apparent dip exists between borehole and formation, current loops generated by the logging tool cross the formation bed boundaries and generate a charge buildup at the boundaries. The result is a high-resistivity spike as the tool crosses the bed boundary. In deviated or horizontal wells, polarization horns on measurements-while-drilling propagation logs have been used to detect bed boundaries.
4. Omeragic D, Li Q, Chou L, Yang L, Duong K, Smits J, Lau T, Liu CB, Dworak R, Dreuillault V, Yang J and Ye H: "Deep Directional Electromagnetic Measurements for Optimal Well Placement," paper SPE 97045, presented at the SPE Annual Technical Conference and Exhibition, Dallas, October 9-12, 2005.
5. Li et al, reference 1.
6. In this case, apparent dip refers to the angle of inclination of a bedding plane measured with respect to orientation of the LWD tool. By contrast, true dip of a formation bedding plane is measured perpendicular to the strike of the formation. Strike indicates the trend of a bed, measured by obtaining the azimuth of the intersection of a plane, such as a dipping bed, with a horizontal surface.
7. Seydoux J, Tabanou J, Ortenzi L, Denichou J-M, De Laet Y, Omeragic D, Iversen M and Fejerskov M: "A Deep Resistivity Logging-While-Drilling Device for Proactive Geosteering," The Leading Edge 23, no. 6 (June 2004): 581-586.
8. Wiig et al, reference 2.
9. Tribe I and Watson K: "Proactive Geosteering Along Forties Sands of the Callanish Field, UKCS, Using New Directional and Deep-Reading LWD Measurement," presented at the SPE DEVEX 2005 Production and Development Conference, Aberdeen, May 18-19, 2005.
10. Li et al, reference 1.
11. Gryphon field was operated by Kerr-McGee North Sea (UK) Limited prior to acquisition by Maersk Oil on July 1, 2005.
12. Jolly RJH and Lonergan L: "Mechanisms and Controls on the Formation of Sand Intrusions," Journal of the Geological Society 159, no. 5 (September 2002): 605-617.
13. Pedersen PA, Hauge R and Berg E: "The Veslefrikk Field," Proceedings of the 3rd Norwegian Institute of Technology North Sea Oil & Gas Reservoirs Conference, Trondheim, Norway, November 30-December 2, 1992 (published in 1994): 51-73.
14. Wiig et al, reference 2.