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Today’s permits

Corporate lineage

Shamrock Oil & Gas Corp.

Now part of Valero Energy Corporation.

8
Recorded transactions
Acquired
Current status
0
Predecessors on record

Lineage

The chain on record.

Each arrow is a recorded acquisition or merger. Open any company to trace its own chain.

Shamrock Oil & Gas Corp. · acquired by

  1. Shamrock Oil & Gas Corp.Diamond Shamrock Corp.

Successor chain

  1. Diamond Shamrock Corp. (E&P Operations)Diamond Shamrock Exploration Co
  2. Diamond Shamrock, Inc.Ultramar Diamond Shamrock Corporation
  3. Diamond Shamrock Exploration Co.Maxus Exploration Company
  4. Ultramar Diamond Shamrock Corp.Valero Energy Corporation
  5. Maxus Exploration CompanyMidgard Energy Company
  6. Midgard Energy CompanyCrescendo Resources, L.P.
  7. Crescendo Resources, L.P.BP Amoco Inc.

Quick answers

About Shamrock Oil & Gas Corp.

Who acquired Shamrock Oil & Gas Corp.?
Shamrock Oil & Gas Corp. was acquired into Valero Energy Corporation, which is the current successor entity in the chain tracked by the OGLandman M&A directory.
Is Shamrock Oil & Gas Corp. still an independent company?
No. Shamrock Oil & Gas Corp. is no longer independent; it is now part of Valero Energy Corporation.

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.

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