Montana Assignment of Partial Interest in Oil and Gas Lease Reserving an Overriding Royalty Interest refers to a legal document that allows an individual or entity (assignor) to transfer a portion of their interest in an oil and gas lease to another party (assignee), while reserving an overriding royalty interest for themselves. This assignment creates a contractual relationship between the assignor and assignee regarding the rights and benefits associated with the lease. Keywords: Montana, Assignment of Partial Interest, Oil and Gas Lease, Overriding Royalty Interest, Reserving There are different types of Montana Assignment of Partial Interest in Oil and Gas Lease Reserving an Overriding Royalty Interest, which include: 1. Voluntary Assignment: This type of assignment occurs when the assignor willingly transfers a partial interest in the oil and gas lease to the assignee with a reservation of an overriding royalty interest. Both parties involved in the transaction mutually agree to the terms and conditions of the assignment. 2. Involuntary Assignment: In certain circumstances, an assignment may be involuntary, which means that it is imposed by law or court order. This can occur due to bankruptcy, foreclosure, or other legal proceedings. However, even in involuntary assignments, it may be possible for the assignor to reserve an overriding royalty interest. 3. Partial Assignment by Fractional Interest: Another type of assignment involves transferring a fractional interest in the lease. For example, the assignor may decide to assign 50% of their interest to the assignee while reserving an overriding royalty interest for the remaining 50%. 4. Partial Assignment by Acreage: In some cases, the assignment can be based on acreage instead of a fractional interest. Here, the assignor may assign a specific acreage within the lease to the assignee while retaining an overriding royalty interest for that acreage. It is essential to consult with legal professionals experienced in oil and gas lease assignments to ensure compliance with Montana laws and regulations. The assignment document should clearly outline the assignor's partial interest, the assignee's rights and obligations, and the terms of the overriding royalty interest reservation.