Texas operator · RRC P-5 157689
Clark Oil Co.
Clark Oil Co. runs 26 producing leases in 2 Texas counties. The Railroad Commission shows 59,435 barrels of oil and 51,988 mcf of gas in the 12 months through Jul 2026.
Operator dossier · 2 counties
- Producing leases
- 26of 28 on record
- Counties
- 2
- Biggest county
- Crockett County
- Biggest field
- Shannon (San Andres)
Get checks from Clark Oil Co.?
Upload a royalty check stub or a phone photo. We compare each month with the state numbers for the lease and tell you what to ask.
Where they work
fewermore
- Gas, last 12 months
- 51,988 mcf
- RRC operator no.
- 157689
- Leases on record
- 28
- Data through
- Jul 2026
Production
Five years of Clark Oil Co. output
Oil output from Clark Oil Co. fell 7% over the last 12 months
59.4k bbl in the 12 months through Jul 2026, against 63.8k bbl in the 12 months before. Peak month: May 2024, 6,117 bbl.
Gas output from Clark Oil Co. rose 675% over the last 12 months
52k mcf in the 12 months through Jul 2026, against 6,712 mcf in the 12 months before. Peak month: Apr 2026, 4,635 mcf.
SourceTexas Railroad Commission, Production Data Query, summed over every lease reported under operator 157689. Reported through Jul 2026, file dated Sep 18, 2026. The newest month is often revised as operators file late.
Leases
Clark Oil Co. leases, biggest first
18,245bbl oil−29% on the year before
4,249bbl oil−12% on the year before
4,138bbl oil−15% on the year before
4,118bbl oil+92% on the year before
3,797bbl oil+10% on the year before
3,726bbl oil−24% on the year before
2,865bbl oil−11% on the year before
2,686bbl oil+41% on the year before
2,376bbl oil−6% on the year before
2,307bbl oil−21% on the year before
2,276bbl oil−6% on the year before
1,628bbl oil+29% on the year before
1,604bbl oil+20% on the year before
1,382bbl oil+41% on the year before
1,053bbl oil+73% on the year before
960bbl oil+67% on the year before
633bbl oil+4% on the year before
601bbl oil+9% on the year before
219bbl oil+6% on the year before
148bbl oil−29% on the year before
115bbl oil−37% on the year before
109bbl oil−7% on the year before
97bbl oil+185% on the year before
46bbl oil−31% on the year before
30bbl oil+7% on the year before
Showing 25 of 26.
SourceTexas Railroad Commission, Production Data Query. Ranked by an approximate value of last-12-month output, so oil and gas wells sort together.
Where they work
Counties and fields where Clark Oil Co. produces
Counties, by Clark Oil Co. oil
Crockett County leads
Fields, by Clark Oil Co. oil
Shannon (San Andres) leads
- Shannon (San Andres)12 producing leases · District 7C · Field 8266356833.1kbbl
- Clara Couch4 producing leases · District 7C · Field 1850000110.8kbbl
- Yates (Smith Sand)4 producing leases · District 08 · Field 992953337,560bbl
- Noelke (Clear Fork)2 producing leases · District 7C · Field 656740903,646bbl
- Millard (Queen)3 producing leases · District 08 · Field 614405002,900bbl
- Halff1 producing lease · District 7C · Field 381560011,382bbl
Recent drilling permits for Clark Oil Co.
No recent drilling permits for Clark Oil Co. are in our data yet.
How to read the statement
How to read a Clark Oil Co. royalty statement
The header: who paid you, and for which check
Look for the payor name, your owner number, the check number and the check date. Keep the owner number: every call or letter to the operator starts with it.
What we knowClark Oil Co. is Railroad Commission operator 157689. The name on your check may be a parent company or a payment subsidiary.
The property line: which lease this is
Each lease you own in gets its own block, named as the operator names it. That name can be shorter than the state's, or carry a suffix such as a well number or unit letter.
What we knowClark Oil Co. runs 26 producing leases across 2 counties, so one check can list many properties. Find yours in the table above by name, or search for the name printed on the stub.
Product and volume: barrels, mcf, and the month
The stub shows the production month (the production month, not the check month), the product and your share of the volume. Divide your volume by your decimal to get the lease total, then compare it with the lease page.
What we knowFor example, open SHANNON ESTATE -B-, HALFF 65 or HOOVER, A. C. -A- and read the “oil sold” and “gas sold” columns.
Price: what the operator says it got
Oil is usually close to the WTI benchmark for the month. Gas prices vary widely: they depend on where the gas is sold and on what the operator subtracts before it reports a price.
Deductions: gathering, compression, processing
Costs taken after the well. Some leases allow them and some do not; your lease and division order say which. A deduction that appears in one month and not the next is worth a question.
Taxes: severance and ad valorem
Texas severance tax is taken from your share: 4.6% of oil value and 7.5% of gas value at market. Ad valorem tax may also appear. The rate on your stub should match these.
Net: gross, minus deductions and taxes, times your share
Check the arithmetic: volume times price gives gross value, then subtract deductions and taxes. If the net does not match your check, or a month is missing, that is the first thing to ask about.
What we know100% of the gas Clark Oil Co. reported was flared or vented. Flared gas pays no royalty, so a lease that flares heavily will show a smaller gas volume on your stub than on the state's production line.
At a glance
Clark Oil Co.
- RRC operator number (P-5)
- 157689
- Producing leases
- 26
- Counties
- 2
- Biggest county
- Crockett County
- Oil, last 12 months
- 59,435 bbl
- Gas sent to plants
- 0.0%
- Gas sold to pipelines
- 0.0%
- Gas flared or vented
- 100%
Owner relations
Who to call at Clark Oil Co.
We have not yet added Clark Oil Co.’s owner relations phone, mailing address or online portal. It is usually printed at the top or bottom of your statement. The Railroad Commission also holds an address for the operator under number 157689.
When there is something to ask