The San Andres formation

Free written valuation

What are your San Andres minerals worth?

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What kind of interest do you own? Not sure Producing — I get monthly or quarterly checks Leased but not producing — bonus paid, no checks yet Not leased / not producing — I just own the minerals I am not sure

County

Operator / who sends your checks

Average monthly royalty check (last 3 to 6 months) Prefer not to say $0 (not producing) $1–$100 $100–$500 $500–$2,000 $2,000–$10,000 $10,000+

Your check is the single fastest path to a value range. Fill the acres below instead if you do not get checks.

Net mineral acres

Royalty fraction Not sure 1/8 (12.5%), historical standard3/16 (18.75%), modern standard1/5 (20%), common in the Permian1/4 (25%), hot plays1/6 (16.67%), federal minimum since 2022

Unit size (acres)

Interest type, if you know it Not sure Royalty interest The minerals themselves Overriding royalty (ORRI) Working interest Non-participating royalty (NPRI)

How did you come to own it? Prefer not to say Inherited it Kept (reserved/severed) when family sold the land Purchased it

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The San Andres shows up in state oil and gas commission well records as a producing formation or pool in 15 of the counties and parishes we cover, across the Permian Basin. Every county where it produces sits in the same basin, though well counts and operators differ county to county. Across those counties, state records show 33,783 active wells producing, with the heaviest activity in Andrews County, Ector County, Crane County. This page is built from the same public well-record data as our county pages, not a USGS geologic assessment, so it does not carry a play-wide resource estimate the way our larger flagship formation pages do.

Counties in the San Andres play

These are the counties and parishes we cover where state commission records show the San Andres producing. Each links to that county's own San Andres well count and operators, not just the general county page.

What the San Andres means for your minerals

A resource estimate for a play is not the value of your acreage. Your mineral and royalty interest is valued on the income your wells actually pay, roughly 36 to 72 times your average monthly royalty check, the same as 3 to 6 times your annual royalty. Where you land in that band depends on your wells decline, the operator, your royalty rate, and any undeveloped drilling upside. For the full method and a free on-screen estimate, see what are my mineral rights worth.

The San Andres is part of the Permian Basin. For the basin-wide value bands and the counties we buy in, see the Permian Basin page.

San Andres questions

Which counties does the San Andres produce in?

State commission well records show the San Andres producing in 15 counties we cover: Andrews County, Cochran County, Crane County, Crosby County, Curry County, De Baca County, Ector County, Gaines County, Garza County, Guadalupe County, Hockley County, Lubbock County, and others. See each county's page for the full local well and operator picture.

How many wells produce from the San Andres?

Across the counties we cover, state oil and gas commission records show about 33,783 active wells tied to the San Andres. That figure is a sum across counties from public well records, not a measure of any one owner's interest.

What is a San Andres mineral interest worth?

A San Andres interest is valued the same way as any producing interest: roughly 36 to 72 times your average monthly royalty check. Where you land in that range depends on your wells' decline, the operator, your royalty rate, and any undeveloped drilling upside. This is an estimate, not an offer.

Sources

• Texas Railroad Commission, Well Distribution by County (official producing oil and gas well counts)
• FracFocus national chemical disclosure registry, operators of record by county (public bulk data)
• New Mexico Oil Conservation Division, active wells (NMOCD ArcGIS public service)

See what your San Andres minerals could be worth

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