E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 29/06 (2006.01) E21B 7/06 (2006.01) E21B 7/08 (2006.01) E21B 23/01 (2006.01)
Patent
CA 2308846
A whipstock assembly 10 for setting within a casing C on an anchor A diverts a cutting mill M to cut a window in the casing. The whipstock assembly is passed through a restriction positioned above the location where the whipstock assembly is set, is lowered past the restriction in a run in position, and is set within the casing in a set position. The whipstock assembly includes an upper whipstock body 20 having a ramp surface 22, 26, a middle lower whipstock body 60 having a concave guiding face 72, and a lower whipstock body 110 having a concave whipstock diversion face 112. A lower hinge member 118 is provided for positioning the concave whipstock diversion face for diverting the cutting mill, and at least one whipstock positioning member 80, 100 engages the casing when in the set position for positioning the middle whipstock body guiding face. Accordingly the method of the invention, the cutting mill and at least a portion of the a downhole motor may be positioned adjacent the guiding face of the middle whipstock body when initiating rotation of the cutting mill. The whipstock and method of the present invention are particularly well suited for conducting a thru tubing operation, with the tubing OD being less than the ID of the casing which the whipstock assembly is set.
Braddick Britt O.
Pollard Michael E.
Finlayson & Singlehurst
Tiw Corporation
LandOfFree
Small diameter run in whipstock and method for setting in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Small diameter run in whipstock and method for setting in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Small diameter run in whipstock and method for setting in... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1956518