Magnetic field enhancement for use in passive ranging

Details Magnetic field enhancement for use in passive ranging Magnetic field enhancement for use in passive ranging

E - Fixed Constructions

21

B

E21B 47/022 (2012.01) E21B 7/04 (2006.01)

Patent

CA 2460788

A method for surveying a borehole is provided. The method includes providing a casing string having a plurality of opposing magnetic poles in a target borehole. The method also includes providing a tool having a magnetic field measurement device disposed thereon and positioning the tool in another borehole. Magnetic interference vectors are determined in the other borehole by comparing the measured magnetic field at that position with a known magnetic field of the earth. The magnetic interference vector indicates a direction to a casing string. Various embodiments of the invention may be utilized to drill one borehole along a predetermined course relative to another borehole. The surveying methodology of this invention may be advantageously utilized to drill twin wells for steam assisted gravity drainage applications.

Affiliated with

Also associated with

Rating

Magnetic field enhancement for use in passive ranging does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic field enhancement for use in passive ranging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic field enhancement for use in passive ranging will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1439830