[Code of Federal Regulations] [Title 30, Volume 2] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 30CFR250.121] [Page 254] TITLE 30--MINERAL RESOURCES CHAPTER II--MINERALS MANAGEMENT SERVICE, DEPARTMENT OF THE INTERIOR PART 250--OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF--Table of Contents Subpart A--General Sec. 250.121 What happens when the reservoir contains both original gas in place and injected gas? If the reservoir contains both original gas in place and injected gas, when you produce gas from the reservoir you must use an MMS- approved formula to determine the amounts of injected or stored gas and gas original to the reservoir.