A Washington Assignment of Overriding Royalty Interest (Non-Producing, Single Lease, Reserves Right to Pool) is a legal document that transfers the ownership of a non-producing overriding royalty interest from one party to another, specifically in the state of Washington. This type of assignment typically encompasses a single lease and includes a provision that reserves the right to pool the royalties with other leases or interests. In Washington, there may be various types of Assignment of Overriding Royalty Interest depending on specific conditions and provisions. Some common variations include: 1. Washington Assignment of Overriding Royalty Interest (Non-Producing, Single Lease, No Right to Pool): This type of assignment is similar to the one mentioned above, but without the provision that allows the pooling of royalties from multiple leases or interests. It means that the overriding royalty interest can only be associated with the single lease mentioned in the document. 2. Washington Assignment of Overriding Royalty Interest (Non-Producing, Multiple Leases, Reserves Right to Pool): In this type of assignment, the overriding royalty interest is not limited to a single lease but can be associated with multiple leases. However, it still includes the provision that grants the right to pool royalties with other leases or interests. 3. Washington Assignment of Overriding Royalty Interest (Non-Producing, Reserved Royalty Interest, Single Lease, Reserves Right to Pool): This assignment involves the transfer of a reserved royalty interest, in addition to the overriding royalty interest. A reserved royalty interest means that the assignor retains some portion of the royalty interest. This document also includes the provision for pooling the royalties. Assignments of overriding royalty interests are commonly used in the oil and gas industry to transfer rights to receive royalty payments to individuals or entities. This type of assignment ensures a smooth transition of ownership and provides clarity regarding the rights and obligations of both the assignor and the assignee. Keywords: Washington Assignment, Overriding Royalty Interest, Non-Producing, Single Lease, Reserves Right to Pool, Multiple Leases, Reserved Royalty Interest, Oil and Gas Industry.