W. Va. Code § 22-6-25
The owner or operator of any well or wells which produce oil or gas may allow such well or wells to remain open for the purpose of introducing water or other liquid pressure into and upon the producing strata for the purpose of recovering the oil contained therein, and may drill additional wells for like purposes, provided that the introduction of such water or other liquid pressure shall be controlled as to volume and pressure and shall be through casing or tubing which shall be so anchored and packed that no water-bearing strata or other oil, or gas-bearing sand or producing stratum, above or below the producing strata into and upon which such pressure is introduced, shall be affected thereby, fulfilling requirements as set forth under section fourteen.
W. Va. Code § 22-6-25