DEVIATED WELL VSP'S IN HIGH-DIP STRUCTURES

Vertical seismic profiles were acquired in two offshore wells, using a three component borehole seismic tool. Since the geological structure consists of steeply dipping formations, a considerable amount of shear wave energy was recorded. Three component processing was used to separate the shear waves. In addition the wells are severely deviated. Therefore a non-conventional, rotated coordinate system was defined to describe the velocity structure model used in the Kitchhoff migration of the VSP's. They provide fair to excellent ties at the wells for the complex, steeply dipping geology, as seen in the three dimensional surface seismic data. A standard method has been developed to provide fast, optimal processing of similar future VSP's from the area. Thus, additional high resolution seismic data, tied at the borehole, can be provided in time to be of use during planning of future drilling, or side-tracking, in exploration and development wells.

• Supplemental Notes:
  • Proceedings of the 19th Annual Offshore Technology Conference, Houston, Texas, 27-30 Apr. 1987, Vol. 4, p. 167 [7 pp., 7 ref., 6 fig.]
• Authors:
  • Knight, J M
• Conference:
  • Proceedings of the 19th Annual Offshore Technology Conference
  • Location: Houston Texas, United States
  • Date: 1987-4-27 to 1987-4-30
• Publication Date: 1987

Language

• English

Subject/Index Terms

• Old TRIS Terms: Geophysical data offshore engineering exploration
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00692732
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM