The Colorado Declaration of Pooled Unit for Oil and Gas is a legal document enacted by the Colorado Oil and Gas Conservation Commission (COG CC) to facilitate the development and production of oil and gas resources in the state. By pooling individual leaseholders' interests into a unified drilling unit, the declaration allows for the efficient extraction of oil and gas resources while minimizing operational and environmental impacts. Keywords: Colorado, Declaration of Pooled Unit For Oil and Gas, COG CC, development, production, leaseholders, drilling unit, extraction, operational impacts, environmental impacts. Different Types of Colorado Declaration of Pooled Unit For Oil and Gas: 1. Voluntary Pooled Unit: In this type, leaseholders choose to voluntarily pool their interests into a unit to increase efficiency and economic returns. The COG CC reviews and approves the declaration based on technical and legal requirements. 2. Compulsory Pooled Unit: In cases where leaseholders cannot voluntarily reach an agreement to pool their interests, the COG CC may intervene and invoke compulsory pooling. This process ensures that all owners within a specified area contribute to the development and production efforts, even if they initially oppose pooling. 3. Unitization Agreement: This type of declaration is entered into between leaseholders who already share a common interest in the same oil or gas reservoir. Unitization agreements aim to maximize resource recovery and reduce waste by consolidating production operations and sharing costs among all parties involved. 4. Fields of Use: A Colorado Declaration of Pooled Unit For Oil and Gas may also pertain to fields of use, where multiple leaseholds are combined to facilitate the extraction of oil and gas across a larger geographic area. This type of pooling is usually done to optimize production efficiency and reduce potential waste. In all these types, the Colorado Declaration of Pooled Unit For Oil and Gas allows for coordinated drilling, production, and operation within a defined area, ensuring the effective utilization of oil and gas resources while safeguarding environmental considerations.