An Oklahoma Partial Assignment of Oil and Gas Lease (Producing Lease. Reservation of Production Payment) is a legal document that allows a lessee to assign a portion of their rights and interests in an oil and gas lease to another party. This type of assignment is specific to Oklahoma and is commonly used in the oil and gas industry. Keywords: Oklahoma, Partial Assignment, Oil and Gas Lease, Producing Lease, Reservation of Production Payment, oil and gas industry. In Oklahoma, there are different types of Partial Assignment of Oil and Gas Leases, including: 1. Assignment of Working Interest: This type of assignment involves the transfer of an ownership interest in the working interest of an oil and gas lease. The assignor (original lessee) assigns a specific percentage or fraction of their working interest to the assignee (new party). This allows the assignee to share in the costs and benefits of production. 2. Assignment of Royalty Interest: In this type of assignment, the assignor assigns a portion of their royalty interest to the assignee. The assignee will then receive a percentage or fraction of the royalty payments generated from the production of oil and gas on the leased property. 3. Assignment of Overriding Royalty Interest: An overriding royalty interest (ORRIS) is a non-operational interest that grants the assignee the right to receive a percentage or fraction of the revenue generated from the production of oil and gas. This assignment allows the assignee to benefit from the production without bearing any of the costs. 4. Assignment of Net Revenue Interest: This type of assignment involves the transfer of a percentage or fraction of the net revenue interest in an oil and gas lease. Net revenue interest represents the fraction of the total revenue that belongs to the assignor after deducting production costs and other expenses. The primary purpose of an Oklahoma Partial Assignment of Oil and Gas Lease (Producing Lease. Reservation of Production Payment) is to allow the assignor to transfer some of their ownership interests in an oil and gas lease, while reserving a production payment for themselves. This ensures that they continue to receive a portion of the production income while sharing the operational responsibilities and risks with the assignee. Overall, an Oklahoma Partial Assignment of Oil and Gas Lease (Producing Lease. Reservation of Production Payment) serves as a legal mechanism for lessees to effectively manage and monetize their oil and gas assets in the state of Oklahoma.