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Permalink Reply by Big Daddy, bcnr on July 14, 2009 at 14:35

Mac, If I recall, HA is the Haynesville formation( depth), RA is Resevoir A. No difference beyween resevoir A, B, or C. Just a way to distinguish for the production company, the state and everyone else. SU is sand unit. Sometimes these are followed by a letter or numbers. LesB, Shale Geo and Skip are indeed the experts on this nomenclature IMHO.

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Permalink Reply by Les Bamburg on July 14, 2009 at 15:44

Mac, Cannie has done an excellent job of explaining the nomenclature for unit names. The larger category is field so in Caddo Parish you would find the following units for example:

S22-T15N-R15W, HA RA SUA Unit, Chesapeake, Caspiana Field, Caddo Parish
S27-T15N-R16W, HA RA SUA Unit, Chesapeake, Bethany-Longstreet Field, Caddo Parish
S14-T16N-R15W, HA RA SUA Unit, Chesapeake, Metcalf Field, Caddo Parish
S29-T16N-R15W, HA RA SUA Unit, Chesapeake, Johnson Branch Field, Caddo Parish
S23-T16N-R16W, HA RA SUA Unit, Chesapeake, Greenwood-Waskom Field, Caddo Parish

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Permalink Reply by Mac Davis on July 14, 2009 at 16:01

So there can only be one "HA RA SUA" in a field, but there can be one in each field, correct?

The unique identifier would be "HA RA SUA - Caspiana Field," right?

What's the meaning of "Sand" in "Sand Unit?"

Thanks

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Permalink Reply by Les Bamburg on July 14, 2009 at 16:11

Mac, you are correct in first two statements.

"Sand" has no real meaning in the context of these type units. The sand unit (SUA, SUB, etc) is the designation of the area covered by the unit. Normally for the Haynesville Units this will be a single section (~ 640 acres).

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Permalink Reply by Mac Davis on July 14, 2009 at 17:07

OK, I'm guessing that "sand" comes from the time when we were drilling into sand formations that carried oil or gas, and the name "Sand Unit" just stuck after we started drilling formations that aren't sand.

Thanks again.

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