# Pugh Clauses in Oil and Gas Leases

**TL;DR:** A Pugh clause is a protective lease provision that prevents operators from holding large amounts of acreage or multiple formations with minimal production. Named after Louisiana legislator Lawrence Pugh, this clause releases non-producing acreage and undeveloped formations at the end of a lease's primary term, allowing mineral owners to re-lease those portions separately. Without a Pugh clause, a single well can hold thousands of acres indefinitely.

## Key Takeaways

- A Pugh clause releases acreage and formations not held by actual production at the end of the primary term, preventing operators from holding undeveloped minerals indefinitely
- Horizontal (surface) Pugh clauses release acreage outside producing drilling units, while depth (vertical) Pugh clauses release formations above or below the producing zone
- Without a Pugh clause, one producing well on 40 acres can hold an entire 640-acre lease by production for decades, preventing mineral owners from leasing the remaining acreage
- Pugh clauses give mineral owners opportunities to re-lease released acreage at current market rates, potentially with better royalty terms and more active operators
- Modern leases in active oil and gas basins commonly include comprehensive Pugh clauses as standard protective provisions
- Pugh clauses cannot typically be added to existing leases without operator agreement—they must be negotiated when the lease is signed
- Released acreage from Pugh clause provisions often commands higher sale values and provides flexibility for mineral owners to negotiate new bonus payments

## Page Highlights

**The Core Problem**: Without a Pugh clause, operators can lease 640 acres, drill one well on 40 acres, and hold the entire acreage indefinitely by production. The remaining 600 acres sit idle and cannot be leased to other operators, even if they'll never be developed.

**Horizontal Pugh Clauses**: These release acreage outside of producing drilling units at the end of the primary term. If a 640-acre lease has a well on a 320-acre unit, the other 320 acres are released. Also called Surface Pugh, Acreage Release, or Pooling Pugh.

**Depth Pugh Clauses**: Also called Vertical Pugh or Vertical Severance clauses, these release formations above or below the producing zone. For example, if a well produces from the Wolfcamp formation, deeper formations like the Bone Spring are released for separate leasing.

**Continuous Development Clauses**: A variation requiring operators to drill at specified intervals or release acreage, preventing operators from holding leases with minimal development activity.

**Benefits for Mineral Owners**: Pugh clauses enable re-leasing at current market rates, new bonus payments on released acreage, opportunities to work with more active operators, potentially higher royalty terms, and increased sale flexibility since unleased minerals typically command higher values.

**Identifying Pugh Clauses**: These provisions may appear under various headings in leases including "Pugh Clause," "Freestone Rider," "Release of Undeveloped Acreage," "Retained Acreage," "Acreage Retention," "Continuous Development," "Depth Severance," or "Deep Rights." Professional legal review is recommended if uncertain.

**Lease Modification Limitations**: Pugh clauses generally cannot be added to existing leases without operator agreement. They must be negotiated during the initial lease signing. Operators have no obligation to release acreage as long as production continues from an existing lease without a Pugh clause.

## Related Topics

- [Lease Terms Explained](https://www.buckheadenergy.com/lease-terms-explained)
- [Held By Production](https://www.buckheadenergy.com/held-by-production)
- [Lease Expiration Options](https://www.buckheadenergy.com/lease-expiration-options)
- [Force Pooling](https://www.buckheadenergy.com/force-pooling)
- [Pooling Vs Unitization](https://www.buckheadenergy.com/pooling-vs-unitization)

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