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| Owner | Owner City | Lease | Operator | NRI | Type | County | Year |
|---|---|---|---|---|---|---|---|
| DOORNBOS CHARLES F REV TR | Bartlesville, OK | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DUNCAN FIVE REAL EST LP | Fort Worth, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| EAST J4 LP | Austin, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| GRIFFITH LISA JO NEWCOMER | Vernon, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ISAACS FAMILY LTD LIABILITY LTD | Spring, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| JOHNSTON ROBERT DALE HEIRS | , | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| KATO SALLY M TR | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| LANCASTER JANE R | Dallas, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| LEWIS JOHN ANN L | Waco, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MALES FRANK ALLEN JR | New Braunfels, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| METSKI RUTH MARY | Northampton, MA | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| NEAL J H REVOCABLE FAMILY MINERA | Ada, OK | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| NEAL JOE FRANKLIN | Coleman, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| NEWCOMER RANDY | Vernon, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| NEWCOMER TRACY | Vernon, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| QUAIL CREEK ROYALTY, LLC | Spring, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| RATLIFF JAMES B III | Rankin, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| SPILLER ALLISON MINERAL TRUST | Coppell, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STARK TRUST | Austin, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| THREE L RANCH LTD | San Angelo, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| TIEMAN BETTY C | Katy, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UPTON COUNTY ROYALTY CO INC | Dallas, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WEILER ROGER D II | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WELDY JOHN T | Deming, NM | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WHITE STAR ENERGY | Midland, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| XTO ENERGY INC | Spring, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ZACKOFF MICHAEL M SEPARATE PROP | San Angelo, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| CP FOUR GROUP LTD | Crane, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| CRAWFORD CLARA ANABELL | , | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| HUCKABY LP | San Antonio, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ROUND HILL ROYALTY LP | Dallas, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| AMACKER ROBERT KENT | San Angelo, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DENNEY DRUCILLA | Roswell, NM | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DUBE M JANICE | Wilson, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| E G ENERGY LLC | Leawood, KS | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| GILLHAM OLLIE BELLE | , | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| INSPIRE AOG PARTNERS LTD | Midland, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| JAKUBIK MINERAL PROPERTIES, L L | Missouri City, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| JOHNSTON DANIEL TITUS | , | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| KATO STEVEN F TRUST | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| KATO VICTOR P TRUST | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| KLEIN BETTY H | Mount Vernon, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MOORE CEIL W | Mount Vernon, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| OXY USA WTP LP | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STOCKARD W A SR | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| RYEDALE LLC | Dallas, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WYATT ANDREW P | Midland, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ANSLEY LUCY LEA | Phoenix, AZ | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| BISHOP-WINDHAM | Midland, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| BUNCH LINDA A | Mesquite, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| BUNDY PAUL C INTERESTS LLC | Houston, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| C O G OPERATING LLC | Rowlett, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| C O G OPERATING LLC | Rowlett, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| CAHN MARY A HEIRS | , | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DOORNBOS CHARLES F REV TR | Bartlesville, OK | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DUNCAN FIVE REAL EST LP | Benbrook, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| EAST J4 LP | Austin, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| GRIFFITH LISA JO NEWCOMER | Vernon, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ISAACS FAMILY LTD LIABILITY LTD | Spring, TX | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| JOHNSTON ROBERT DALE HEIRS | , | HASEL 56 | C O G OPERATING LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |