Guadalupe County, Texas
Oil and gas wells in and near ZIP code 78638
- 1,311wells inside the ZIP
- 2,277within 3 miles of it
- 8drilling locations in two years
- 118square miles of land
The ZIP code and 3 miles around it
Wells and drilling locations in and around 78638
- Drilling locations8Permits issued in the last two years
- Producing wells1,403On a lease reporting production now
- Not producing307Shut in, inactive or no lease on record
- Plugged567The state's wellbore record says plugged
The solid line is ZIP code 78638 as the US Census Bureau draws it; the dashed line is 3 miles out. The counts are for everything inside the dashed line: 1,311 of the wells are inside the ZIP itself. Sources: Railroad Commission of Texas well layers and permit files, US Census Bureau ZIP Code Tabulation Areas and county outlines, town points from GeoNames (CC BY 4.0), base map from USGS The National Map.
Use this map on your site
You may show this map on any site, unchanged. Keep the credit line and its link to Royalty Clerk under the map. The picture updates by itself as the state records new wells and permits.
<a href="https://royaltyclerk.com/texas/zip/78638"><img src="https://royaltyclerk.com/maps/zip/78638.svg" alt="Map of ZIP code 78638, Texas, outlined, with 1,311 oil and gas wells inside it and 2,277 within 3 miles of its edge as dots, and 8 drilling locations permitted in two years." width="1000" height="1039" loading="lazy" style="max-width:100%;height:auto;border:0"></a>
<p style="margin:4px 0 0;font-size:14px">Map: <a href="https://royaltyclerk.com/texas/zip/78638">Oil and gas wells in ZIP code 78638, Texas</a> by Royalty Clerk, from Railroad Commission of Texas records</p>In numbers
Wells in 78638 and within 3 miles
| What | Inside 78638 | Within 3 miles |
|---|---|---|
| Producing wells | 828 | 1,403 |
| Not producing wells | 168 | 307 |
| Plugged wells | 315 | 567 |
| Drilling permits, last 24 months | 4 | 8 |
| All wells | 1,311 | 2,277 |
ZIP code 78638 covers 118 square miles of land and 0.4 of water: about 11 wells to the square mile.
Drilling locations
The newest drilling permits in and near 78638
| Issued | Lease and well | Where | Operator |
|---|---|---|---|
| 2026-09-03 | JOHNSON 1Avertical · API 42-055-35201 · permit 0918387Excel Operating, LLC | 2.7 mi outside29.71367, -97.67794 on OpenStreetMap (opens in a new tab) | Excel Operating, LLC |
| 2026-06-17 | BILBY 2Hhorizontal · API 42-187-33726 · permit 0916425DJ Exploration, Inc. | in 7863829.61449, -97.72755 on OpenStreetMap (opens in a new tab) | DJ Exploration, Inc. |
| 2026-06-08 | HUBER RD UNIT 1vertical · API 42-187-33725 · permit 0916140Energy Transfer Company | 2.2 mi outside29.69548, -97.99161 on OpenStreetMap (opens in a new tab) | Energy Transfer Company |
| 2026-05-12 | JOHNSON 1Avertical · API 42-055-35201 · permit 0915498Onemoretime, LLC | 2.7 mi outside29.71367, -97.67794 on OpenStreetMap (opens in a new tab) | Onemoretime, LLC |
| 2026-03-26 | LARISON 1Hhorizontal · API 42-187-33724 · permit 0914303Tri-W Oil | in 7863829.61446, -97.72763 on OpenStreetMap (opens in a new tab) | Tri-W Oil |
| 2024-12-02 | DIX & MCKEAN C 5Hhorizontal · API 42-187-33723 · permit 0904264Texas Petroleum Investment Co. | in 7863829.60897, -97.73524 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-12-02 | SCHUBERT, A. H. 1Hhorizontal · API 42-187-33722 · permit 0904257Texas Petroleum Investment Co. | in 7863829.67573, -97.76923 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-11-26 | PROCTOR , G.W. 5Hhorizontal · API 42-055-35198 · permit 0904266Texas Petroleum Investment Co. | 1.3 mi outside29.72455, -97.72197 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-11-14 | BYRD 1Hhorizontal · API 42-055-35195 · permit 0903635Texas Petroleum Investment Co. | 2.1 mi outside29.73700, -97.71618 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-10-30 | E.J. HARDEMAN HEIRS 1Hhorizontal · API 42-055-35196 · permit 0903642Texas Petroleum Investment Co. | 3.0 mi outside29.75016, -97.71312 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-09-27 | ALLEN, J.E. -A- 15Hhorizontal · API 42-187-33721 · permit 0902816Texas Petroleum Investment Co. | in 7863829.69739, -97.75491 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-08-13 | ROBERTS A 2Hhorizontal · API 42-187-33720 · permit 0901908Texas Petroleum Investment Co. | in 7863829.69784, -97.74549 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-08-13 | MCKEAN,A.J.&J.M. -A- /137.50AC./ 2Hhorizontal · API 42-187-33719 · permit 0901824Texas Petroleum Investment Co. | in 7863829.70240, -97.74470 on OpenStreetMap (opens in a new tab) | Texas Petroleum Investment Co. |
| 2024-08-06 | SECRETARIAT 2SWvertical · API 42-055-80086 · permit 0901816Millennium Exploration Co. LLC | 1.6 mi outside29.73155, -97.72323 on OpenStreetMap (opens in a new tab) | Millennium Exploration Co. LLC |
| 2024-07-10 | SECRETARIAT 1Hhorizontal · API 42-055-35189 · permit 0901028Millennium Exploration Co. LLC | 1.4 mi outside29.72880, -97.72484 on OpenStreetMap (opens in a new tab) | Millennium Exploration Co. LLC |
A permit is permission to drill, not a well. Source: Railroad Commission of Texas drilling permits. This week's permits, statewide
Nearest wells
The wells nearest the middle of 78638
- 1Tristan, P. 2A1.6 mi NENot producing · API 42-187-33399 · Ams Energy Solutions LLP · inside 78638
- 2Tristan, P. 1A1.7 mi NENot producing · API 42-187-33397 · Ams Energy Solutions LLP · inside 78638
- 3Roamel, P. "C" 241.9 mi SENot producing · API 42-187-33552 · DJ Exploration, Inc. · inside 78638
- 4Kuhn 42.0 mi NWProducing · API 42-187-33672 · Production Resources, Inc. · inside 78638
- 5Kuhn A 12.0 mi NWProducing · API 42-187-33691 · Production Resources, Inc. · inside 78638
- 6Kuhn A 52.0 mi NWProducing · API 42-187-33676 · Production Resources, Inc. · inside 78638
Who runs them
Operators of the wells in 78638
- 1Texas Petroleum Investment Co.741 wells589 on producing leases
- 2Delray Oil, Inc.132 wells129 on producing leases
- 3Texstar Oil & Gas, LLC91 wells79 on producing leases
- 4DJ Exploration, Inc.77 wells59 on producing leases
- 5Pronto Services55 wells55 on producing leases
- 6Gauge Oil Company43 wells43 on producing leases
- 7Enhanced RS, Inc.28 wells23 on producing leases
- 8Tri-W Oil23 wells23 on producing leases
Around it
Towns and ZIP codes around 78638
FAQ
Questions people ask
Are there oil or gas wells near 78638?
Yes. 1,311 oil and gas wells with a location on the state's map lie inside ZIP code 78638, 828 of them on producing leases, and 2,277 within 3 miles of its edge. The state issued 8 drilling permits with a well location within 3 miles in the last 24 months, the newest on September 3, 2026.
Is this the same area as the Postal Service's ZIP code?
Nearly. The Postal Service does not publish ZIP code boundaries, so we use the US Census Bureau's ZIP Code Tabulation Area for 78638, built from census blocks where most addresses use that ZIP. The edges can differ from mail delivery by a street or two, and a few ZIP codes (post office boxes, single buildings) have no area of their own.
Do I own minerals under a well in 78638?
A well nearby says nothing about who owns the minerals under it. The county's mineral roll lists who is paid on each producing lease. Search a name to see whether the Guadalupe County roll lists it.
Where do the numbers come from?
Every dot is a well location from the Railroad Commission of Texas well layers, or a drilling permit's surface location from its permit files, issued in the last 24 months. A well counts as producing when its lease reported oil or gas in its newest months, and as plugged when the state's wellbore record says so. Nothing on this page comes from owners or from addresses.
Own land or minerals near 78638?
See whether a county roll lists your name, and get an email when a permit or a new well is filed near you.
Sources
- US Census Bureau, 2020 ZIP Code Tabulation Areas, cartographic boundary file at 1:500,000 (cb_2020_us_zcta520_500k)www2.census.gov/geo/tiger/GENZ2020/shp/cb_2020_us_zcta520_500k.zip · file of May 19, 2023, read November 14, 2026
- Railroad Commission of Texas, well layers and drilling permit fileswww.rrc.texas.gov/resource-center/research/data-sets-available-for-download/ · loaded as the state publishes them; figures kept six hours
- US Census Bureau, cartographic boundary files (county lines), through the us-atlas package 3.0.1www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html · built into the site with its well maps
- GeoNames, towns and their points (CC BY 4.0)www.geonames.org/ · built into the site with its town pages
- USGS The National Map, basemap services (topo and imagery map under the wells), public domainapps.nationalmap.gov/services/ · tiles drawn under the map when it is made