Ind. Code § 14-38-2-14

Sec. 14. The ownership, operation, or other interest by a nonresident or by a nonresident's authorized agent in a test hole in Indiana is considered equivalent to an appointment by the nonresident of the secretary of state to be the nonresident's attorney, upon whom may be served all process in an action or a proceeding growing out of the operation or ownership by the nonresident or the nonresident's agent of a test hole in Indiana. The operation or ownership indicates the nonresident's agreement that the process served against the nonresident is of the legal force and validity as if served upon the nonresident personally, unless the nonresident maintains on file with the commission the designation of a resident agent for service of process.