Montana Assignment of Oil and Gas Leases of All Interest in Undeveloped Leases — Short form is a legal document used in the state of Montana to transfer ownership or rights of oil and gas leases that are yet to be developed. This document is essential in the energy industry, ensuring the smooth transition of ownership when lease assignments take place. The Montana Assignment of Oil and Gas Leases of All Interest in Undeveloped Leases — Short form allows for the efficient transfer of interests in undeveloped leases related to oil and gas. It outlines the terms and conditions agreed upon by the assignor (current leaseholder) and assignee (new leaseholder). These terms typically include the lease identification, effective date of assignment, description of assigned interest, and any additional agreements or provisions related to the transfer. Keywords: Montana, assignment, oil and gas leases, undeveloped leases, short form, lease transfer, ownership transfer, energy industry, lease identification, effective date, assigned interest, provisions. Although the question mentions different types of Montana Assignment of Oil and Gas Leases of All Interest in Undeveloped Leases — Short form, there is typically only one standard form used for such assignments in Montana. However, it is important to consult legal experts or check with the relevant authorities for any specific variations or supplemental forms that may exist.