# Sierra Exploration Company (1960s-1980s Active Grantor Era) - Young County (TX) Land & Surveyor Archive

> Independent Historical Surveyor Atlas, Plat Archive & Chain-of-Title Research Index documenting recorded conveyances into and out of Sierra Exploration Company in Young County (TX).

## 1. Entity & Archival Summary
- **Corporate / Record Name**: Sierra Exploration Company
- **Indexed Variations**: Sierra Exploration Company, SIERRA EXPLORATION COMPANY
- **County & State**: Young County, TX
- **Charter / Archive Reference**: TX Corporate Grantor / County Clerk Archive
- **Original Active Era**: 1960s-1980s Active Grantor Era
- **Primary County Clerk Anchor Citation**: Young County Official Public Records (34 Recorded Conveyances & Assignments)
- **Canonical Broadsheet URL**: https://sierra-exploration-co.pages.dev/
- **Records & Curative Inquiry Desk**: https://sierra-exploration-co.pages.dev/#inquiry

## 2. Primary Surveys, Subdivisions & Abstracts Indexed
- Young County Survey Abstracts & Subdivided Rural Tracts (34 Recorded Instruments)
- Regional Oil, Gas & Subsurface Reservation Corridor (Young County, TX)

## 3. Documented Subsurface, Mineral, Royalty & Easement Reservations
- Express Oil, Gas, Royalty & Mineral Reservations Across 34 Recorded Young County Instruments
- Retained Subsurface Ingress/Egress & Leasehold Rights with Zero Blanket Corporate Liquidation Deeds

## 4. Chain-of-Title Runsheet (Conveyances Into Company & Out-Conveyance Reservations)
- **[Vesting Into Company] Young County Parent Survey & Mineral Vesting Into Sierra Exploration Company**: `Young County Deed & Official Records (Parent Acquisition Series)` | Parties & Tract: Prior Young County Grantors -> Sierra Exploration Company | Notes: Vests parent tract, mineral, and leasehold estates in Young County (TX) into Sierra Exploration Company.
- **[Mineral Reservation] Young County 34-Instrument Out-Conveyance & Subsurface Reservation Schedule**: `Young County Official Public Records (34 Recorded Conveyances & Assignments)` | Parties & Tract: Sierra Exploration Company -> Various Young County Grantees | Notes: 34 recorded instruments in Young County indexing conveyances and retained subsurface interests of Sierra Exploration Company with zero blanket corporate exit deeds.

## 5. Railroad Commission (RRC) Operator Profile, Lease Succession & API Wells
- **RRC Form P-5 Operator Number(s)**: #780207, #780213 (SIERRA EXPLORATION)
- **Recorded P-5 Office Address**: P O BOX 1104, LULING, TX 78648
- **P-5 Status**: INACTIVE / DELINQUENT P-5 (Effective: 1991-01-07, Last Refile: 1991-10-22)
- **Historical P-5 Corporate Officers**: SHORT, JOHN COOLEY (OWNER); MOUNT, DON L. (PRESIDENT); COLELLA, SARA MOUNT (VICE PRESIDENT/TREASURER); LANEY, BETTY (SECRETARY)
### Historical RRC Leases & Current Successor Operators
- **RRC Lease #08-01770 (FULLERTON CLEARFORK UNIT)** | County: ANDREWS | Field: FULLERTON | Cum Oil: 77,254,699 BBL | Cum Gas: 65,504,534 MCF | Current/Successor Operator: HILCORP ENERGY COMPANY (P-5 #386310) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #08-18729 (W. MEANS /GRBG.-SAN ANDRES/ UNIT)** | County: ANDREWS | Field: MEANS | Cum Oil: 6,031,985 BBL | Cum Gas: 2,076,317 MCF | Current/Successor Operator: REVERENCE OPERATING LLC (P-5 #703827) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #08-16940 (NORTH FOSTER UNIT)** | County: ECTOR | Field: FOSTER | Cum Oil: 3,112,525 BBL | Cum Gas: 1,337,484 MCF | Current/Successor Operator: AGHORN OPERATING, INC. (P-5 #008716) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #09-05309 (DANIELS, S. M.)** | County: WICHITA | Field: WICHITA COUNTY REGULAR | Cum Oil: 237,457 BBL | Cum Gas: 21 MCF | Current/Successor Operator: ALFARO PRODUCTION LLC (P-5 #012399) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #04-12930 (MCGILL BROS.)** | County: STARR | Field: KELSEY (FRIO CONSOL.) | Cum Oil: 101,107 BBL | Cum Gas: 564,658 MCF | Current/Successor Operator: HILCORP ENERGY COMPANY (P-5 #386310) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #09-19534 (COOKE)** | County: COOKE | Field: COOKE COUNTY REGULAR | Cum Oil: 157,839 BBL | Cum Gas: 19 MCF | Current/Successor Operator: WFW PRODUCTION COMPANY, INC. (P-5 #913350) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #09-21516 (PEARSON)** | County: WILBARGER | Field: WILBARGER COUNTY REGULAR | Cum Oil: 113,552 BBL | Cum Gas: 22,383 MCF | Current/Successor Operator: BURK ROYALTY CO., LTD. (P-5 #108799) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #03-103229 (TEXAS DEPARTMENT OF CORRECTIONS)** | County: FORT BEND | Field: JESTER (MURPHY-BULS 8350) | Cum Oil: 0 BBL | Cum Gas: 557,007 MCF | Current/Successor Operator: BEJO CORPORATION (P-5 #061990) | Status: INACTIVE (LAST PROD 2002-07)
- **RRC Lease #04-05140 (MCGILL BROS.)** | County: STARR | Field: KELSEY, DEEP (ZONE 22-A) | Cum Oil: 55,297 BBL | Cum Gas: 138,281 MCF | Current/Successor Operator: EXXON MOBIL CORPORATION (P-5 #257128) | Status: INACTIVE (LAST PROD 2000-06)
- **RRC Lease #02-184620 (CARTWRIGHT)** | County: LIVE OAK | Field: MOUNT LUCAS (2100) | Cum Oil: 0 BBL | Cum Gas: 280,477 MCF | Current/Successor Operator: SIERRA EXPLORATION COMPANY (P-5 #780213) | Status: INACTIVE (LAST PROD 2005-07)
- **RRC Lease #08-26691 (UNIVERSITY -26-)** | County: ANDREWS | Field: SHAFTER LAKE (WOLFCAMP) | Cum Oil: 40,116 BBL | Cum Gas: 7,059 MCF | Current/Successor Operator: CRESCENT ENERGY OPERATING, LLC (P-5 #103575) | Status: INACTIVE (LAST PROD 2026-10)
- **RRC Lease #01-05773 (CHERRY, PETER -A-)** | County: WILSON | Field: PALMER (POTH-B) | Cum Oil: 35,717 BBL | Cum Gas: 50 MCF | Current/Successor Operator: RAFTER L RESOURCES, LLC (P-5 #100559) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #01-08403 (MCKEAN, M.)** | County: BEXAR | Field: MONKSFIELD (350 SAND) | Cum Oil: 35,631 BBL | Cum Gas: 138 MCF | Current/Successor Operator: SOUTH SAM OPERATING COMPANY, LLC (P-5 #802738) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #7C-115158 (EDMISTON "172")** | County: SCHLEICHER | Field: HENRY-SPECK (CANYON) | Cum Oil: 0 BBL | Cum Gas: 172,955 MCF | Current/Successor Operator: SILVER OIL & GAS INC. (P-5 #781880) | Status: ACTIVE PRODUCING (HBP)
- **RRC Lease #03-12624 (JOYCE UNIT)** | County: LEE | Field: GIDDINGS (AUSTIN CHALK-3) | Cum Oil: 26,328 BBL | Cum Gas: 14,224 MCF | Current/Successor Operator: WCS OIL & GAS CORPORATION (P-5 #902624) | Status: INACTIVE (LAST PROD 2007-06)
### RRC API Well Inventory
- **API 42-003-32112** | FULLERTON CLEARFORK UNIT #1425 | ANDREWS Co. | Survey: SEC. 14, BLK. A-32, PSL A-32 | Operator: HILCORP ENERGY COMPANY
- **API 42-003-33318** | W. MEANS /GRBG.-SAN ANDRES/ UNIT #2-5 | ANDREWS Co. | Survey: SECTION 16, BLOCK A-35, PSL A-35 | Operator: REVERENCE OPERATING LLC
- **API 42-135-34092** | NORTH FOSTER UNIT #140 | ECTOR Co. | Survey: SECTION 1, BLOCK 43, T-2-S, T&P RR CO. SURVEY  | Operator: AGHORN OPERATING, INC.
- **API 42-485-38718** | DANIELS, S. M. #54 | WICHITA Co. | Survey: H. HASTIE SURVEY A-99 A-99 | Operator: ALFARO PRODUCTION LLC
- **API 42-427-30620** | MCGILL BROS. #442 | STARR Co. | Survey: LA BLANCA GRANT, A-152 A-152 | Operator: HILCORP ENERGY COMPANY
- **API 42-097-31423** | COOKE #1 | COOKE Co. | Survey: A. PATTERSON SUR., A-817 A-817 | Operator: WFW PRODUCTION COMPANY, INC.
- **API 42-487-32024** | PEARSON #3 | WILBARGER Co. | Survey: H&TC RR CO. A-803 | Operator: BURK ROYALTY CO., LTD.
- **API 42-157-31371** | TEXAS DEPARTMENT OF CORRECTIONS #A1 | FORT BEND Co. | Survey: JANE WILKINS SURVEY A-96 A-96 | Operator: BEJO CORPORATION
- **API 42-297-34410** | CARTWRIGHT #A 2 | LIVE OAK Co. | Survey: JOSEPH SANDMAN #32 A-421 | Operator: SIERRA EXPLORATION COMPANY
- **API 42-003-32773** | UNIVERSITY -26- #1 | ANDREWS Co. | Survey: SEC. 26, BLK. 13, UNIVERSITY SUR.  | Operator: CRESCENT ENERGY OPERATING, LLC
- **API 42-493-30555** | CHERRY, PETER -A- #6 | WILSON Co. | Survey: DAVID MURPHREE #1 A-207 A-207 | Operator: RAFTER L RESOURCES, LLC
- **API 42-029-32502** | MCKEAN, M. #118 | BEXAR Co. | Survey: LOTS 4 & 5 ASA MITCHELL SUBD. PART OF F. RODRIGUEZ S  | Operator: SOUTH SAM OPERATING COMPANY, LLC
- **API 42-413-31470** | EDMISTON "172" #1 | SCHLEICHER Co. | Survey: HE & WT RR CO A-804 | Operator: SILVER OIL & GAS INC.
- **API 42-287-30553** | JOYCE UNIT #1 | LEE Co. | Survey: STEPHEN F. AUSTIN SUR., A-1 A-1 | Operator: WCS OIL & GAS CORPORATION
- **API 42-433-31464** | FLOWERS, H. G. #2 | STONEWALL Co. | Survey: SECTION 12, BLOCK A, ARNOLD & BARRETT  | Operator: ROSS ENGINEERING, INC.

## 6. Custom-Quoted Abstract Runsheets, Leasehold Verification & Unclaimed Royalty Audits
Full Sovereignty-to-Present Grantor/Grantee Runsheets, Scanned Instrument PDFs, and Unredacted Lease Expiration Schedules are custom quoted on demand based on instrument count, page volume, and tract value via https://sierra-exploration-co.pages.dev/#inquiry.