Skip to content
HomePermit TrackerCounty RecordsM&A DirectoryNRA CalculatorBlog

Corporate lineage

Diamond Shamrock Corp. (E&P Operations)

Now part of BP Amoco Inc.

9
Recorded transactions
Acquired
Current status
2
Predecessors on record

Quick answers

About Diamond Shamrock Corp. (E&P Operations).

Who acquired Diamond Shamrock Corp. (E&P Operations)?
Diamond Shamrock Corp. (E&P Operations) was acquired into BP Amoco Inc., which is the current successor entity in the chain tracked by the OGLandman M&A directory.
Is Diamond Shamrock Corp. (E&P Operations) still an independent company?
No. Diamond Shamrock Corp. (E&P Operations) is no longer independent; it is now part of BP Amoco Inc.
What companies did Diamond Shamrock Corp. (E&P Operations) acquire?
Diamond Shamrock Corp. (E&P Operations) acquired AGM Corp., Shamrock Oil & Gas Corp. Full list available in the lineage chain below.

From lineage to the paper

the successor is one answer. the deed is the other.

Now find where the paper is filed.

Knowing which entity a mineral interest rolls up to today is half the work. The county records directory tells you where that county’s deed and lease index lives, how far back it runs, and whether you can pull images online or have to go in person.