The Stratigraphy and Structure of the Simsboro Gas Field, Lincoln Parish, Louisiana

Abstract

Well logs have been used to interpret the structure and stratigraphy of the Simsboro Gas Field of Lincoln Parish, Louisiana. A variety of subsurface maps have been constructed in an attempt to interpret the depositional enviionment of this prolific gas field. These maps lead the author to believe that the earliest Cretaceous gas sands of the Simsboro Field, the Hosston "H" sand thru the Gardner sand, were deposited in a lower deltaic plain environment and the later Cretaceous gas sands, the James sand thru the Fowler sand, were deposited in a prodelta environment by longshore currents. Later in the Cretaceous, after the deposition of the Rodessa Formation, the area was warped into a domal feature by the development of a salt pillow at greater depth. These warped sands provide an excellent trap for migrating hydrocarbons.