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Corporate lineage

Diamond Shamrock Exploration Co.

Now part of BP Amoco Inc.

13
Recorded transactions
Acquired
Current status
9
Predecessors on record

Quick answers

About Diamond Shamrock Exploration Co.

Who acquired Diamond Shamrock Exploration Co.?
Diamond Shamrock Exploration Co. 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 Exploration Co. still an independent company?
No. Diamond Shamrock Exploration Co. is no longer independent; it is now part of BP Amoco Inc.
What companies did Diamond Shamrock Exploration Co. acquire?
Diamond Shamrock Exploration Co. acquired Diamond Alkali Company, Diamond Shamrock Corp. (E&P Operations), Falcon Seaboard and other entities. 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.