CFR > Title 30 - Mineral Resources > CHAPTER II—MINERALS MANAGEMENT SERVICE, DEPARTMENT OF THE INTERIOR > SUBCHAPTER B—OFFSHORE (parts 250 to 285) > PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF > SUBPART D—Oil and Gas Drilling Operations (§250.400 to §250.490) > 250.402—When and how must I secure a well?

250.402—When and how must I secure a well?

Whenever you interrupt drilling operations, you must install a downhole safety device, such as a cement plug, bridge plug, or packer. You must install the device at an appropriate depth within a properly cemented casing string or liner.
(a) Among the events that may cause you to interrupt drilling operations are:
(1) Evacuation of the drilling crew;
(2) Inability to keep the drilling rig on location; or
(3) Repair to major drilling or well-control equipment.
(b) For floating drilling operations, the District Manager may approve the use of blind or blind-shear rams or pipe rams and an inside BOP if you don't have time to install a downhole safety device or if special circumstances occur.

Code of Federal Regulations

[68 FR 8423, Feb. 20, 2003]