Sell Your Mineral Rights in McMullen County, TX
If you own mineral rights in McMullen County, you're sitting on acreage that sits in one of the most active Eagle Ford corridors in South Texas — with over 10,300 producing wells and a roster of major operators that includes EOG Resources and Marathon Oil. This is real production, real demand, and real money — and if you've gotten an offer recently, it's worth knowing what the market actually says your rights are worth before you sign anything.
Est. per Acre
$1,500–$5,000
per net royalty acre
Active Wells
10,300+
Drilling Activity
Core Basin
Eagle Ford Shale
Primary Formation
Primary Resource
Oil & Gas
Commodity Type
What Owning Mineral Rights in McMullen County Actually Means Right Now
McMullen County sits in the heart of the Eagle Ford Shale play, and it's not a speculative frontier — it's an actively drilled, actively producing county with more than 10,300 producing wells recorded with the state. The county has seen cumulative production of over 1.6 million barrels of oil and nearly 13.8 million MCF of gas, and operators like EOG Resources, Marathon Oil, and Repsol are still active here. If someone has approached you with an offer, that's not random — buyers don't chase acreage in counties where nothing is happening. Before you decide anything, it's worth understanding what you actually own, what it's likely worth, and why the market is paying attention to McMullen County right now.
McMullen County by the Numbers
10,300
wells
Producing Wells (State Records)
1,600,000
BBL
Cumulative Oil Production
13,800,000
MCF
Cumulative Gas Production
$1,500 – $5,000
per net mineral acre
Estimated Mineral Value Range (per acre, estimate)
Oil & Gas
both
Primary Commodity
Who's Operating in McMullen County
EOG Resources, Inc.
EOGMarathon Oil EF LLC
MROMurphy Expl. & Prod. Co. - USA
MURRepsol Oil & Gas USA, LLC
REPYYBPX Operating Company
BPBurlington Resources O & G Co LP
COPWhat's in the Ground
Eagle Ford Shale
The primary target in McMullen County. The Eagle Ford here produces both oil and gas, and it's what's driven the well count to over 10,000. The formation is a proven, large-scale shale play that major operators have been developing for years — not a wildcat prospect. It's the reason this county has meaningful mineral value.
Austin Chalk
The Austin Chalk sits above the Eagle Ford and has historically been a secondary target in South Texas. It's seeing renewed interest in some areas as horizontal drilling technology has made it more economic. Not the primary driver of value in McMullen County, but worth knowing it's there.
Buda Limestone
The Buda Limestone lies just below the Eagle Ford and is another potential secondary target. It's produced in parts of South Texas and could add upside for mineral owners depending on how leases are structured and what formations operators are targeting.
How a Mineral Rights Sale Works
You Get a Lump-Sum Payment
When you sell mineral rights, you receive a one-time cash payment — typically calculated on a per-net-mineral-acre basis. You're trading future royalty income for certainty today. The buyer takes on all the risk of whether wells get drilled, what production looks like, and what commodity prices do.
We Evaluate What You Own
Before any offer is made, we look at your deed or tax records to confirm what you own, where it is in the county, and whether it's already under a lease or producing. The location of your acreage within McMullen County matters — proximity to active wells and operators affects value.
You Review the Offer — No Pressure
You'll get a written offer with a clear explanation of how we got there. You're not obligated to accept anything. If you want to get a second opinion or talk to an attorney first, we'll tell you to do that. A good offer should be able to stand on its own.
Closing Is Handled for You
If you accept, we handle the title work, the deed preparation, and the recording at the McMullen County Clerk's office in Tilden. You don't need to file anything or travel anywhere. Most closings happen within a few weeks of an accepted offer.
Partial Sales Are an Option
You don't have to sell everything. Some owners sell a portion of their mineral rights — a fraction of their net mineral acres — to get liquidity now while keeping some upside. This is worth discussing if you're not sure you want to exit entirely.
What to Know About McMullen County
County Records Are in Tilden
McMullen County's seat is Tilden, Texas — a small town, but all deed records and mineral conveyances are filed with the McMullen County Clerk there. Texas is a notice recording state, which means that once a deed is recorded, it's public notice of ownership. Any mineral rights transaction you complete should be recorded promptly.
Texas Has No Forced Pooling
Texas does not have a forced pooling statute the way states like Oklahoma or North Dakota do. Operators must negotiate voluntary leases with mineral owners. This means if your minerals are not leased, an operator cannot include them in a unit without your agreement — which can be a negotiating advantage, but also means you could be left out if you don't engage.
Texas Severance Tax on Production
Texas charges a severance tax on oil and gas production — currently 4.6% on oil and 7.5% on gas at the wellhead. This is typically deducted from your royalty check before you receive it. It's not something you pay out of pocket separately, but it affects your net royalty income.
Non-Participating Royalty Interests (NPRI)
In Texas, it's common for prior owners to have reserved a Non-Participating Royalty Interest when conveying minerals. If your deed chain includes an NPRI, that interest gets paid before you do — which reduces your effective royalty. A title review should flag this before any sale or lease is finalized.
Heirship and Intestate Succession
Many mineral owners in McMullen County inherited their rights — sometimes through informal family arrangements that were never legally documented. Texas requires an Affidavit of Heirship or a formal probate to establish clear title if minerals passed without a will. Unclear title can delay or reduce a sale; a local title attorney can help clean this up.
Why Some Owners Are Selling Now
People sell mineral rights for real reasons, not because someone talked them into it. Estate simplification is one of the most common — if you inherited these rights along with siblings or cousins, managing a fractional interest across multiple people is complicated, and a clean sale divides the proceeds simply. Others are selling because they've held minerals for years without production and want certainty over a royalty check that may or may not come. Some have gotten an unsolicited offer and are realizing for the first time that what they own has actual market value. And some just want the cash now — to pay off debt, fund retirement, or invest somewhere they understand better than oil and gas markets. None of these are wrong reasons. The question is whether the timing and the offer price are right for you — and that's worth evaluating carefully, not quickly.
Questions We Hear From McMullen County Owners
I got a letter offering to buy my minerals. Is the offer they made me fair?
I inherited these minerals but I'm not sure exactly what I own. How do I figure that out?
My minerals are already under a lease. Does that affect what I can sell?
EOG Resources is operating near my acreage. Does that matter for what my minerals are worth?
How long does it take to actually close a sale if I decide to go through with it?
Find Out What Your McMullen County Minerals Are Actually Worth
Fill out the form and a real person will reach out — usually within one business day. We'll ask a few basic questions about your acreage, look at what's happening around your specific location in the county, and give you an honest valuation. No obligation, no pressure, no jargon. Just a straight answer.
Get My Free ValuationData Sources
Production and operator figures for McMullen County are drawn from DrillingEdge (state regulator production data). Per-acre values are estimates and not an offer.
Other Eagle Ford Shale Counties
McMullen County is part of the Eagle Ford Shale. See the full basin overview, operators, and counties we serve.
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