# Implied Covenants in an Oil and Gas Lease

**Source:** Buckhead Energy Oil & Gas Encyclopedia (https://www.buckheadenergy.com/learn) — canonical: https://www.buckheadenergy.com/implied-covenants-oil-and-gas-lease

Implied covenants are obligations that courts read into an oil and gas lease even though they are not written in it — most importantly the duty to reasonably develop the leased minerals, the duty to protect the lease against drainage by nearby wells, and the duty to market production with reasonable diligence — all measured by what a reasonably prudent operator would do.

## Duties the lease does not spell out
An oil and gas lease is written mostly to protect the lessee, and it is often silent on what the lessee must actually do with the minerals once it has them. Courts fill that gap with implied covenants — obligations understood to be part of the bargain because, without them, the lessor's royalty could be rendered worthless while the lessee sat on the acreage.
The unifying standard is the reasonably prudent operator: the lessee must do what a competent operator would do under the same circumstances, acting in good faith with regard to the interests of both parties — not just its own. These duties are implied in most oil and gas states, though the exact contours vary.

## The core implied covenants
To reasonably develop: after production is obtained, the lessee must continue to develop the lease as a prudent operator would, rather than holding it on a single well while other locations sit undrilled.
To protect against drainage: if a well on adjacent land is draining the leased tract, the lessee must act — typically by drilling an offset well — to protect the lessor from losing minerals to a neighbor.
To market: the lessee must market the production with reasonable diligence, on reasonable terms, so the royalty actually gets paid — a covenant closely tied to disputes over post-production costs.
To explore / operate diligently: some states also recognize duties to further explore and to conduct operations with reasonable care.

## How a covenant is enforced
A lessor who believes a covenant is being breached generally must show what a reasonably prudent operator would have done and that the failure caused harm — often that a well would have been profitable, or that drainage occurred. The usual remedies are damages for the lost royalty and, in clearer cases, conditional cancellation of the undeveloped part of the lease (drill within a set time or release the acreage).
Because these are judge-made and fact-intensive, the outcome turns on evidence about the specific reservoir, offset wells, and economics — which is why implied-covenant claims usually involve expert testimony and a qualified oil and gas attorney.

## Why implied covenants matter to an owner
Implied covenants are the reason a lease is not a license for the lessee to do nothing. If your acreage is being drained, or a lease is being held by a lone well while everything around it is developed, the law may already give you leverage — even if the lease itself says nothing about it. Some leases try to disclaim or modify these covenants, so the written terms still matter.
When minerals are leased and arguably under-developed or being drained, that situation is part of what a buyer evaluates too. Buckhead Energy weighs development status and drainage risk when it values leased minerals. This page is educational information, not legal advice.

## Frequently asked questions

**What are implied covenants in an oil and gas lease?**
Obligations courts read into a lease even though they are not written in it — chiefly the duty to reasonably develop the minerals, to protect the lease against drainage, and to market production with reasonable diligence. Each is measured by what a reasonably prudent operator would do.

**What is the implied covenant to protect against drainage?**
A duty requiring the lessee to act — usually by drilling an offset well — when a well on adjacent land is draining the leased tract, so the lessor does not lose minerals to a neighboring operator without compensation.

**What is the implied covenant to market?**
A duty to market the production with reasonable diligence on reasonable terms so the royalty actually gets paid. It is closely tied to disputes over post-production costs and how the price paid to the royalty owner is determined.

**What happens if a lessee breaches an implied covenant?**
The lessor may recover damages for the lost royalty and, in clearer cases, obtain conditional cancellation of the undeveloped part of the lease — drill within a set time or release the acreage. Claims are fact-intensive and usually require expert evidence and an attorney.

**Can a lease waive implied covenants?**
Some leases try to disclaim or modify them, so the written terms matter. Whether a disclaimer is effective varies by state. If you think a covenant is being breached, the specific lease language and your state's law both control — consult a qualified oil and gas attorney.

## Related terms
- [Oil and Gas Law](https://www.buckheadenergy.com/oil-and-gas-law)
- [Post-Production Costs](https://www.buckheadenergy.com/post-production-costs)
- [Held by Production](https://www.buckheadenergy.com/held-by-production)
- [Retained Acreage Clause](https://www.buckheadenergy.com/retained-acreage-clause)
- [Oil & Gas Encyclopedia — all terms](https://www.buckheadenergy.com/learn)

_Educational information only, not legal or tax advice. Buckhead Energy is a direct buyer of oil & gas mineral and royalty interests._