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| Owner | Owner City | Lease | Operator | NRI | Type | County | Year |
|---|---|---|---|---|---|---|---|
| WARREN MARK | Nicholasville, KY | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WARREN JUDITH V | Mount Pleasant, SC | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER RAYMOND JR | Wichita, KS | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER FRED | Springfield, MO | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER BART | Keller, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| VAN FOSSAN PAUL | Clackamas, OR | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UPP OPERATING LLC | Houston, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UNDERBERGER RAE | Bedford, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| THOMPSON J CLEO/J C JR | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STRINGER FAMILY INTERESTS LP | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STOKES FIONA | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| SCHLEGEL MARVIN | Anadarko, OK | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ROVER PETROLEUM | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ROUSSELOT ENTERPRISES LTD | Sonora, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| PAESKE KATHRYN | Keizer, OR | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER ROBERT F TRUST | The Hills, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER RICHARD G | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER E S & SONS LTD | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER 4 LTD | Sonora, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAP2006-OK | Oklahoma City, OK | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| FRANCE ZOE A | , | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DORE PAMELA A | San Ramon, CA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ATCHISON RICHARD A JR | Maple Valley, WA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UPP OPERATING LLC | Houston, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WARREN WILLIAM E | Woodstock, GA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ATCHISON RICHARD A JR | Maple Valley, WA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| DORE PAMELA A | San Ramon, CA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| FOSSAN PAUL VAN | Portland, OR | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| FRANCE ZOE A | Discovery Bay, CA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAP2006-OK | Oklahoma City, OK | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER 4 LTD | Sonora, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER E S & SONS LTD | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER RICHARD G | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER ROBERT F TRUST | The Hills, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MCCRAY DORIS A | Lexington, KY | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| PAESKE KATHRYN | Keizer, OR | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ROUSSELOT ENTERPRISES LTD | Sonora, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| SCHLEGEL MARVIN | Anadarko, OK | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STOKES FIONA | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STRINGER FAMILY INTERESTS LP | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| THOMPSON J CLEO/J C JR | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UNDERBERGER RAE | Bedford, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UPP OPERATING LLC | Houston, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER BART | Keller, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER FRED | Springfield, MO | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER RAYMOND JR | Wichita, KS | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WARREN JUDITH V | Mount Pleasant, SC | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| ROVER PETROLEUM | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| SCHLEGEL MARVIN | Anadarko, OK | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| MAYER RICHARD G | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STOKES FIONA | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| STRINGER FAMILY INTERESTS LP | San Angelo, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| THOMPSON J CLEO/J C JR | Dallas, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UNDERBERGER RAE | Bedford, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER RAYMOND JR | Wichita, KS | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WARREN WILLIAM E | Woodstock, GA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WARREN JUDITH V | Mount Pleasant, SC | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| UPP OPERATING LLC | Houston, TX | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER FRED | Springfield, MO | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |
| WALKER BART | McMurray, PA | -21- MAYER 3A | UPP OPERATING, LLC | XXXXXXXX | XXXXXXXX | XXXXXXXX | XXXXXXXX |