Quick answer: Calvert Operating LLC has 1 oil and gas drilling permits on file; the most recent was filed 2016-12-15. This page lists permit dates, API numbers, counties, target formations, and lateral lengths. Data current as of 2026-08-02.
1 total permits on file, most recent 2016-12-15.
Permits Filed
Permit / Spud Date
API Number
County
Well Name
Formation
Lateral Length (ft)
2016-12-15
35037214370000
CREEK
HAYDEN #7
Chautauqua Platform
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Key Takeaways
Operator: Calvert Operating LLC.
Permit volume: 1 permits on file (most recent: 2016-12-15).
What's listed: Permit and spud date, API number, county, well name, target formation, and lateral length per record.
Mineral owners:Valor's mineral management tracks operator permit activity by tract for owners with interests under Calvert Operating LLC's acreage.