COX "A"
Operated by GIEBEL PETROLEUM LTD. (P-5 304280) in the GIEBEL (CLEARFORK, LOWER) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.
The Railroad Commission's own record for the field this lease produces from, including the spacing rule that governs how close together its wells may be drilled.
These are facts about the field, not about this lease. The field holds 11 leases and 12 wells, and the rule below applies to all of them.
A drilling unit in this field needs at least 40 acres. The field rule took effect on 1991-08-05.
The Commission's schedule remark for this field reads: “8/11/98 PER DOCDET #8A- 0219559.”
What this lease produced, and what it was worth
Oil and condensate are valued on the volume the state records as disposed of; gas and casinghead gas on the volume produced. They are different columns of different files, and the difference is not cosmetic.
| Stream | Basis | Volume | Value |
|---|---|---|---|
| Oil | Disposition | 46,473 bbl | $773,134 |
| Casinghead gas | Production | 195,318 Mcf | $102,006 |
| Total | $875,141 | ||
153,614 Mcf of this lease's gas, across 48 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.
Every month this lease reported (70)
Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.
70 months
| Oct 1998 | 0 | 0 | 12.42 | 1.97 | $0 |
| Sep 1998 | 0 | 0 | 12.59 | 2.08 | $0 |
| Aug 1998 | 193 | 579 | 11.30 | 1.91 | $3,285 |
| Jul 1998 | 366 | 1,844 | 11.74 | 2.24 | $8,422 |
| Jun 1998 | 357 | 1,893 | 11.24 | 2.24 | $8,248 |
| May 1998 | 365 | 2,032 | 12.62 | 2.21 | $9,090 |
| Apr 1998 | 365 | 2,012 | 13.04 | 2.51 | $9,800 |
| Mar 1998 | 364 | 2,102 | 12.80 | 2.31 | $9,514 |
| Feb 1998 | 345 | 1,922 | 13.95 | 2.30 | $9,232 |
| Jan 1998 | 496 | 2,170 | 14.70 | 2.15 | $11,967 |
| Dec 1997 | 374 | 2,062 | 16.32 | 2.41 | $11,075 |
| Nov 1997 | 371 | 1,718 | 18.19 | 3.09 | $12,054 |
| Oct 1997 | 521 | 1,917 | 19.25 | 3.15 | $16,067 |
| Sep 1997 | 372 | 2,264 | 17.74 | 2.95 | $13,289 |
| Aug 1997 | 554 | 2,352 | 17.86 | 2.55 | $15,903 |
| Jul 1997 | 366 | 2,412 | 17.58 | 2.25 | $11,854 |
| Jun 1997 | 364 | 2,320 | 17.24 | 2.26 | $11,512 |
| May 1997 | 546 | 2,409 | 18.97 | 2.31 | $15,919 |
| Apr 1997 | 372 | 2,376 | 17.88 | 2.08 | $11,600 |
| Mar 1997 | 557 | 2,562 | 18.95 | 1.94 | $15,523 |
| Feb 1997 | 532 | 2,191 | 20.49 | 2.21 | $15,734 |
| Jan 1997 | 360 | 2,567 | 23.48 | 3.54 | $17,539 |
| Dec 1996 | 552 | 2,617 | 23.32 | — | $12,873 |
| Nov 1996 | 546 | 2,385 | 21.97 | — | $11,996 |
| Oct 1996 | 553 | 2,481 | 23.31 | — | $12,890 |
| Sep 1996 | 554 | 2,576 | 22.22 | — | $12,310 |
| Aug 1996 | 551 | 2,735 | 20.26 | — | $11,163 |
| Jul 1996 | 539 | 2,832 | 19.55 | — | $10,537 |
| Jun 1996 | 545 | 2,853 | 18.73 | — | $10,208 |
| May 1996 | 549 | 2,911 | 19.43 | — | $10,667 |
| Apr 1996 | 721 | 2,789 | 21.51 | — | $15,509 |
| Mar 1996 | 543 | 2,848 | 19.38 | — | $10,523 |
| Feb 1996 | 555 | 2,744 | 16.98 | — | $9,424 |
| Jan 1996 | 731 | 2,971 | 17.07 | — | $12,478 |
| Dec 1995 | 740 | 3,031 | 17.19 | — | $12,721 |
| Nov 1995 | 552 | 2,988 | 16.00 | — | $8,832 |
| Oct 1995 | 910 | 3,728 | 15.43 | — | $14,041 |
| Sep 1995 | 538 | 3,253 | 16.18 | — | $8,705 |
| Aug 1995 | 732 | 3,458 | 15.92 | — | $11,653 |
| Jul 1995 | 743 | 3,575 | 15.24 | — | $11,323 |
| Jun 1995 | 749 | 3,547 | 16.41 | — | $12,291 |
| May 1995 | 732 | 3,204 | 17.56 | — | $12,854 |
| Apr 1995 | 916 | 3,107 | 17.73 | — | $16,241 |
| Mar 1995 | 731 | 3,129 | 16.44 | — | $12,018 |
| Feb 1995 | 738 | 3,107 | 16.58 | — | $12,236 |
| Jan 1995 | 916 | 3,260 | 15.92 | — | $14,583 |
| Dec 1994 | 872 | 3,439 | 15.03 | — | $13,106 |
| Nov 1994 | 903 | 3,595 | 15.90 | — | $14,358 |
| Oct 1994 | 907 | 3,932 | 15.58 | — | $14,131 |
| Sep 1994 | 1,075 | 3,938 | 15.29 | — | $16,437 |
| Aug 1994 | 893 | 4,077 | 16.13 | — | $14,404 |
| Jul 1994 | 712 | 3,230 | 17.56 | — | $12,503 |
| Jun 1994 | 902 | 3,331 | 17.09 | — | $15,415 |
| May 1994 | 1,244 | 3,560 | 15.88 | — | $19,755 |
| Apr 1994 | 733 | 3,405 | 14.14 | — | $10,365 |
| Mar 1994 | 1,076 | 3,331 | 12.46 | — | $13,407 |
| Feb 1994 | 1,092 | 3,184 | 12.50 | — | $13,650 |
| Jan 1994 | 544 | 3,122 | 12.66 | — | $6,887 |
| Dec 1993 | 1,111 | 3,643 | 12.33 | — | $13,699 |
| Nov 1993 | 929 | 3,476 | 14.49 | — | $13,461 |
| Oct 1993 | 923 | 2,999 | 15.85 | — | $14,630 |
| Sep 1993 | 851 | 3,113 | 15.03 | — | $12,791 |
| Aug 1993 | 893 | 4,021 | 15.66 | — | $13,984 |
| Jul 1993 | 1,071 | 3,035 | 15.46 | — | $16,558 |
| Jun 1993 | 1,073 | 3,377 | 16.79 | — | $18,016 |
| May 1993 | 900 | 3,588 | 17.68 | — | $15,912 |
| Apr 1993 | 1,114 | 3,665 | 18.05 | — | $20,108 |
| Mar 1993 | 941 | 3,407 | 18.14 | — | $17,070 |
| Feb 1993 | 1,094 | 2,365 | 17.90 | — | $19,583 |
| Jan 1993 | 544 | 2,652 | 16.93 | — | $9,210 |
How to read this page
The arithmetic is one multiplication per stream per month. Here it is, worked, on a real row from the table above.
Oil 193 bbl × $ 11.30 = $2,181 Casinghead gas 579 Mcf × $ 1.91 = $1,104 ──────────────────────────────────────────────────── Month total $3,285
The volumes are the state's, unchanged
Every barrel and every Mcf on this page is a number the Railroad Commission of Texas published in its monthly production query. Nothing is modelled, estimated or filled in.
The dollars are a multiplication, not a valuation
Volume × a published monthly price. It is not what the operator was paid: it takes no account of a contract, a differential, a transportation deduction, or the share any one owner holds.
Oil and gas are priced differently
Oil is a Texas realisation — the crude oil first purchase price. Gas is a benchmark, because no free Texas wellhead gas series exists at any date. The prices page publishes the difference rather than correcting it away.
A lease is not a well
The state reports oil on lease and gas on well, and this page is the lease grain. 8A/O/65920 is the state's own key, not one this site invented.