An owner's guide to mineral rights on the South Cross Unit — operated by Occidental Petroleum (OXY) on the Crossett S field in west Texas Permian Basin.
Get Your Free Mineral ValuationCounty: Crockett County, Texas
Field: Crossett S
RRC District: 08
Operator: Occidental Petroleum (OXY)
Old wells: 41
Oldest spud: 1961 (65+ years of production)
Recent monthly oil production: 19,868 bbl (Feb 2026)
The South Cross Unit is one of the most active long-tenured oil units in west Texas Permian Basin. With 41 historic wells, an oldest spud date of 1961, and recent monthly production of 19,868 barrels of oil (February 2026), the unit demonstrates the long-tail production profile that characterizes mature unitized oil operations in the Permian Basin (eastern shelf).
OXY operates the South Cross Unit as part of its Crossett South field position — a long-tenured Permian Basin position in Crockett County.
The Crossett S field sits in the Permian Basin (eastern shelf). The field has been producing oil since 1961 — a continuous production history spanning 65+ years. Modern operating consolidation under the South Cross Unit framework has stabilized field-level production through pressure maintenance, waterflood, and (where applicable) CO2 enhanced oil recovery (EOR) operations.
For broader context on the Permian Basin (eastern shelf) producing region, see our Permian Basin (eastern shelf) mineral rights guide.
Mineral interests in the South Cross Unit typically take one of these forms:
Producing royalty interest — your tract's contribution to the unit's monthly revenue, paid by the operator
Non-producing mineral interest — fee mineral ownership in a tract currently outside active producing zones
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
Many South Cross Unit interests are inherited multiple generations deep, with original lease bonus paid in the 1930s-1960s era. Current South Cross Unit mineral owners frequently include heirs spread across multiple states.
Direct buyers value South Cross Unit mineral interests using a discounted cash flow approach with these key inputs:
Decline rate — typically 3-8% annual on long-life unitized waterflood / EOR wells
Remaining reserve life — often 15-30+ years on actively-maintained units
Operator quality — well-maintained units (Occidental Petroleum (OXY) is established in west Texas Permian Basin) typically deliver predictable production
EOR upside — many Permian Basin (eastern shelf) units have CO2 EOR or other tertiary recovery upside not reflected in current production rates
Discount rate — typically 8-12% for stable unitized cash flows
Buckhead Energy buys mineral rights and royalty interests on the South Cross Unit. Out-of-state owners are common — many interests are inherited multiple generations deep. We handle the entire process remotely: free written offer by email, deed signed before a notary in your state, recorded with the Crockett County clerk, and proceeds wired the day of recording.
Free written offers. No obligation. No fees.
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