Patent ID: 9523266
Filing Date: 2016-12-20
CPC Classification: E21B

Claim Text:
1. A downhole perforating system, comprising: a cemented-in lower completion comprising a casing and a liner hung from the casing, one or more orienting nipples, each orienting nipple having a nipple profile to correlate downhole depth, a recess key, and a guiding surface having a lower end that terminates into the recess key, the recess key having an open upper end adjacent to the lower end of the guiding surface and a closed lower end distal to the open upper end and not in contact with the guiding surface, and one or more lines or tools carried on the exterior of the lower completion and oriented relative to the recess key; and a perforating string having a shaped charge free vertical blank section oriented relative to and by an orienting key on an orienting shifting tool that is brought into alignment with the recess key and disposed between the open upper end of the recess key and the closed lower end of the recess key when the perforating string is landed in the orienting nipple; wherein the perforating string further comprises a formation isolation valve shifting tool located near the lower end of the perforating string to change a state of a formation isolation valve as the perforating string is run into the interior of the lower completion.