312 IAC 29-20-5 Use of conductor pipe

Sec. 5. An owner or operator may use conductor pipe to support unconsolidated materials while drilling and the conductor pipe may be pulled or remain in the well at the discretion of the well owner or operator as follows: (1) If conductor pipe is to be removed, it shall be pulled before the next outermost string of casing is cemented. (2) If conductor pipe is to remain, the annulus shall be filled with: (A) neat cement slurry; (B) bentonitic grout slurry; or (C) alternative materials approved by the division director.