A guide for California residents who own — or have inherited — mineral or royalty interests on Spindletop / the Gladys City Unit in Jefferson County, Texas.
Get a Free Mineral ValuationSpindletop — the field of the 1901 Lucas Gusher — has been producing for 125+ years. Many of today's mineral interests are owned by California residents who inherited them 5-6 generations deep from ancestors who held interests during the original 1901-1905 leasing rush. If you live in California and receive monthly royalty checks from a Texas operator on a Jefferson County / Gladys City Unit lease, this guide is for you.
California-resident heirs of Spindletop interests typically hold one or more of:
Producing royalty interest — your tract's contribution to the Gladys City Unit's monthly revenue
Non-producing mineral interest — fee mineral ownership in a tract currently outside active producing units
Overriding royalty interest (ORRI) — a royalty carved out of a working interest
Non-participating royalty interest (NPRI) — a royalty interest with no leasing or development rights
Out-of-state mineral sales are routine on Spindletop / Gladys City Unit interests. Buckhead Energy handles every step remotely:
Submit your information by email — Jefferson County legal description and a copy of your most recent check stub
Receive a free written offer by email
Sign the mineral deed and PSA in front of a California notary
Receive funds via wire transfer on the day the deed is recorded with the Jefferson County clerk
California state income tax applies to mineral sale proceeds; consult a California CPA for guidance. Inherited mineral interests typically receive a stepped-up basis to fair market value at the date of death.
Spindletop & Gladys City Unit Mineral Rights — Main Hub
Spindletop & Gladys City Unit — The Definitive 2026 Guide
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