Sell Mineral Rights
in Sweetwater County,
Wyoming.
Sweetwater County is the largest county in Wyoming by area and the heart of the Greater Green River Basin tight gas play. If you own mineral rights here, particularly anywhere near the Wamsutter trend, you are sitting on one of the most prolific natural gas fairways in the Rocky Mountains. We are happy to help you understand what you have.
The Greater Green River,
under one very large county.
The Greater Green River Basin is a sprawling sedimentary basin that covers most of southwest Wyoming, with extensions into northwest Colorado and northeast Utah. It is actually a system of connected sub-basins, including the Washakie, Great Divide, Sand Wash, and Green River basins proper. Sweetwater County, the largest county in Wyoming, sits over the heart of this system and contains some of the most heavily developed tight gas acreage in the Rockies.
Unlike the oil-dominant Powder River Basin to the north or the Williston Basin to the northeast, Sweetwater County is primarily a natural gas county. The reservoirs here are stacked tight sandstones, sealed beneath thick shale sections, that have been productive for decades. The Wamsutter field, sitting in the Washakie Basin portion of the county, is one of the largest tight gas fields in the United States and has supported continuous drilling activity since the 1970s.
If you are reading this, you probably own a piece of that. Maybe it came through a will, a letter showed up in the mail with an offer to lease, or you are trying to make sense of a royalty statement that started arriving years ago. This page is for you. Below we walk through the rock, who is drilling, where in the county your minerals sit, what shapes value, and how the regulatory side actually works.
Have minerals in Sweetwater County? Send us what you have and we will take a look.
Stacked tight sands. Multiple pay zones.
Decades of production behind them.
Sweetwater County's productive geology is a vertical stack of tight gas sandstones, charged by deep Cretaceous source rocks. Operators here often drill a single well that produces from multiple sands at once, or develop separate zones with separate wells. The same acre of mineral rights can produce royalty income from several formations over time, even from a single vertical well.
The Mesaverde Group is the workhorse of Sweetwater County tight gas. It is actually a sequence of related sandstone formations, including the Almond, Ericson, and Rock Springs members, deposited in a series of coastal and shallow marine environments during the Late Cretaceous. The Almond in particular is a major producer in the Wamsutter area, where it forms a thick, stacked sandstone interval.
For mineral owners, Mesaverde wells are typically the bulk of producing wells in the county. Many vertical wells in Wamsutter target the Mesaverde and complete multiple sands within it. Horizontal Mesaverde development has been tried with varying degrees of success.
The Lance Formation sits below the Fort Union and above the Lewis Shale, representing a thick sequence of fluvial sandstones deposited at the end of the Cretaceous. In the deeper parts of the basin, including portions of southern and eastern Sweetwater County, the Lance is a meaningful tight gas target. The famous Jonah and Pinedale fields in adjacent Sublette County are largely Lance plays, and similar geology extends into parts of Sweetwater.
For mineral owners, Lance development typically requires deeper, more expensive wells than Mesaverde, but the gas-in-place per acre can be substantial. Lance wells often have long productive lives with slow decline curves typical of tight gas reservoirs.
The Frontier Formation is a Late Cretaceous sandstone that sits well below the Mesaverde and has been a meaningful target in the Greater Green River Basin for decades. It tends to be deeper and tighter than the Mesaverde, requiring more sophisticated completions, but it can be highly productive where it is well-developed. Some operators in Sweetwater County have used the Frontier as a deeper secondary target on wells primarily targeting shallower zones.
For mineral owners, Frontier production is less common than Mesaverde or Lance, but it adds to the inventory of zones that could be developed on a given tract over time. Older legacy wells in parts of the county may still produce from the Frontier.
Who is drilling on your
Sweetwater County minerals.
Sweetwater County's operator landscape has shifted meaningfully over the past two decades as the gas market cycled and majors rebalanced portfolios. The operators below cover the bulk of current drilling and royalty activity, though dozens of smaller operators hold pieces of the county, including many legacy positions from earlier development cycles.
We know how these operators develop in Sweetwater County. Happy to give you context on yours.
Not all Sweetwater County
minerals are built the same.
Sweetwater County is the largest county in Wyoming, covering over 10,000 square miles. The productive gas fairway runs through specific portions of the county, with much of the western and southwestern reaches less actively developed. Where in the county your minerals sit shapes everything from operator activity to remaining drilling inventory to whether the surface is federal, private, or checkerboarded.
What your Sweetwater County
mineral rights are worth.
There is no universal formula. Valuation in Sweetwater County is shaped by current production, future drilling inventory, operator quality, lease terms, and especially natural gas prices, since this is a gas-dominant county. Sweetwater's distinguishing feature is that many tracts already have multiple decades of production behind them, with stacked sands that may still support additional wells. What follows are the four scenarios we see most often.
We would rather look at real facts than speak in generalities. Send us what you have.
Wyoming rules,
federal land realities.
Sweetwater County operates under the Wyoming oil and gas regime, administered by the Wyoming Oil and Gas Conservation Commission. The on-the-ground realities reflect Sweetwater's unusually high percentage of federal mineral acreage and the checkerboard land pattern that defines much of the county.
The WOGCC and spacing units
The Wyoming Oil and Gas Conservation Commission regulates oil and gas activity on state and private (fee) minerals in Sweetwater County. The WOGCC permits wells, sets spacing, conducts public hearings on pooling and unitization applications, and maintains the public well database. Wyoming allows compulsory pooling of unleased minerals into spacing units when an operator establishes the case, which is the standard framework here.
The BLM and the checkerboard
Sweetwater County has a very high percentage of federal mineral acreage administered by the BLM Rock Springs and Rawlins field offices. The checkerboard land pattern, created by the Union Pacific Railroad land grants in the 1860s, means odd-numbered sections were granted to the railroad and even-numbered sections stayed federal. Over a century of land transactions, this has produced complex ownership patterns where a single drilling unit often combines federal, state, and private minerals. Federal leases are administered by the BLM, and federal royalties are paid through the Office of Natural Resources Revenue (ONRR).
Communitization and unitization
Because of the checkerboard, communitization agreements are extremely common in Sweetwater County. A communitization agreement combines federal, state, and private minerals into a single drilling unit and allocates production proportionally. If your minerals are part of a communitized unit, royalty allocation follows the agreement, and changes to operator or formation require BLM coordination.
Surface use and environmental review
Development on federal land in Sweetwater County requires NEPA environmental review, which can affect timing. Sage grouse habitat designations across much of southwest Wyoming impose seasonal drilling restrictions and surface stipulations. None of this changes who owns the minerals, but it affects when and how wells can be drilled.
The real questions
mineral owners ask.
We have been through these conversations hundreds of times. Below are honest answers to the things people actually want to know.
Find out what your
Sweetwater County minerals
are actually worth.
Send us what you have, or what you think you have. We will pull Wyoming OGCC and BLM records, check operator activity in your area, and put together a plain-English summary with our reasoning laid out. If it makes sense to go further, we move on your timeline. If not, you have a free breakdown you can take anywhere.