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Santos Ltd

ASX:STO
A$8.54Close 7 Oct 2026 · delayed

Past year: ▲ 35%(6.17 – 8.62 AUD)

Market cap
A$17.79bn
Shares on issue
2.08bn
Story beats
483 since 2006
Last event
19 Aug 2026

Announcements, explained

Each one in plain English, with the numbers worked through for a shareholder.

4 Sept 2008drilling progress report▲ Good

Drillsearch (2% holder) reports Santos-operated Naccowlah West-22 reached 1,750 m, and a drillstem test recovered oil. It will be cased and suspended as a future production well, with the rig moving to Jackson 57.

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3 Sept 2008drilling progress report▲ Good

Beach reports Santos-operated Naccowlah West-22 was successful, at 1,750 m, to be cased as a Birkhead oil producer after a test recovered oil. Marabooka-15 reached TD as a future gas well. Rest covers Beach's own Bass Basin and Otway wells.

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2 Sept 2008drilling progress report● Neutral

AWE reports Henry-2 pilot well in Santos-operated VIC/P 44 reached 657 m and set 13 3/8 inch casing, preparing blowout preventers. No result yet.

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28 Aug 2008drilling progress report▲ Good

Drillsearch reports Santos-operated Naccowlah South-18 was cased and suspended as a Birkhead/Hutton producer and rig released 20 August. Naccowlah West-22 spudded 22 August, at 1,448 m with shows in several formations.

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27 Aug 2008drilling progress report▼ Bad

Third-party Beach weekly report: Santos-operated James-2 (Beach 17.14%) was plugged and abandoned at 2,456 m, a dry appraisal. Naccowlah West-22 is drilling at 1,072 m and Big Lake-89 is drilling ahead.

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27 Aug 2008drilling spud● Neutral

AWE reports Henry-2 pilot well in VIC/P 44 (Santos operator, 50%) began drilling 24 August, and was at 581 m. A development sidetrack follows. It is the last well of the Otway program, supporting the Henry first gas target of H1 2009.

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22 Aug 2008drilling progress report● Neutral

Bow says Santos has delayed completion and testing of the Cuisinier-1 oil discovery (ATP 752P, Bow 15%) to early next week, again. Testing of the Doonmulla and Birkhead shows precedes the Murta zone and should take up to two weeks.

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21 Aug 2008drilling progress report▲ Good

Drillsearch (2% holder) reports Santos-operated Naccowlah South-18 reached 1,902 m and is being cased and suspended as a Birkhead/Hutton oil producer. This follows Beach declining to case it, so it is a small producer rather than a failure. Rig moves to Naccowlah West-22.

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20 Aug 2008drilling progress report▼ Bad

Third-party Beach weekly report: Beach elected not to join casing Naccowlah South-18, which suggests it is not a commercial producer (inference). Marabooka-14 was cased as a gas producer, and James-2 is logging.

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15 Aug 2008drilling progress report● Neutral

Drillsearch reports Santos-operated Naccowlah South-18 reached 1,929 m with oil shows in the Birkhead, Hutton and Basal Jurassic, and was preparing to run logs. Drillsearch's Great Artesian merger was implemented 12 August. No result yet.

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15 Aug 2008drilling progress report● Neutral

Bow says Santos will begin completing and testing the Cuisinier-1 oil discovery in ATP 752P (Bow 15%) early next week, with up to two weeks of testing. Production had been expected early Q3 2008. The rest concerns Bow's own CSG project.

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13 Aug 2008drilling progress report● Neutral

Third-party Beach weekly report: Santos-operated Marabooka-13 was cased as a future gas producer. James-2 and Naccowlah South-18 are drilling in the Hutton, and Marabooka-14 is starting. No new results.

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12 Aug 2008drilling result▲ Good

AWE reports the Netherby-1 development sidetrack reached 2,517 m in the Waarre A, with good gas shows and logs indicating very good reservoir. It will be completed for production, and Henry-2 follows. Santos holds 50% and operates.

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8 Aug 2008drilling progress report▼ Bad

Drillsearch (2% holder) reports Santos-operated Naccowlah South-17 was plugged and abandoned at 1,796 m, with poor upper Hutton reservoir and swept oil in the lower Hutton. Naccowlah South-18 spudded 5 August. Repeats the Beach report.

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6 Aug 2008drilling progress report▼ Bad

Third-party Beach report: Santos-operated Naccowlah South-17 was plugged and abandoned as unsuccessful. James-2 and Naccowlah South-18 are in progress, and Marabooka-13 was cased as a future gas producer.

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4 Aug 2008drilling result▲ GoodMajor

AWE says Netherby-1 in VIC/P 44 (Santos operator, 50%) found good-quality gas-bearing Waarre A sandstone, in line with pre-drill expectations. It is being sidetracked as a producer tied to Henry and Casino, with Henry-2 to follow. This offsets the earlier Pecten East dry hole.

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30 July 2008drilling progress report● Neutral

Third-party Beach weekly report: Santos-operated Naccowlah South-17 and James-2 are in progress in the Cooper Basin. Kirralee-2 and Mudera-16 are also drilling. No new results.

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29 July 2008drilling progress report▲ Good

AWE reports Netherby-1 in Santos-operated VIC/P 44 (Santos 50%) reached 1,870 m and is logging, with gas shows over about 22 m of Waarre A sandstone. A development sidetrack is planned if successful. Final evaluation is pending.

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23 July 2008drilling progress report● Neutral

Third-party Beach weekly report: Santos-operated Mudera-15 and Mudera-14 RE1 are to be or are cased and suspended as future Coorikiana gas producers. Kirralee-2 is cementing surface casing.

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22 July 2008drilling progress report● Neutral

AWE reports Netherby-1 in Santos-operated VIC/P 44 (Santos 50%) was drilling at 1,240 m, with a planned depth of 1,823 m. A follow-up development sidetrack is planned if it succeeds. No result yet.

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21 July 2008drilling result▼ Bad

Third-party Vicpet release confirms Santos' Hudson-1 was plugged and abandoned as a dry hole at 2,430 m, with only residual oil. Vicpet was carried and keeps 15% of ATP 752P. Repeats the result already reported by Bow.

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21 July 2008drilling result▼ BadMajor

Bow reports Santos' Hudson-1 in ATP 752P was plugged and abandoned as a dry hole at 2,430 m, after logs showed only residual oil. This follows the Cuisinier-1 oil discovery. Bow still sees other prospects between the two wells.

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18 July 2008drilling progress report● Neutral

Bow update: Hudson-1 reached total depth of 2,430 m with minor oil shows throughout, and wireline logging was planned for the weekend. No testing decision has been made.

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18 July 2008farm in farm out completion▲ GoodMajor

Santos confirms the PETRONAS deal for 40% of Gladstone LNG is now unconditional after regulatory approvals, including from FIRB, and will complete shortly. PETRONAS pays US$2.008bn on completion, plus US$500m at final investment decision on a second train.

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17 July 2008drilling progress report● Neutral

Bow update: Hudson-1 was at 2,347 m drilling in the Doonmulla sandstone, with minor oil shows in all zones so far. Planned total depth is 2,434 m.

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16 July 2008drilling progress report● Neutral

Bow update: Hudson-1 was at 2,272 m, running in after a bit change, with minor oil shows. Jawsone-1 (Mosaic's well) was setting casing. No new result.

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16 July 2008drilling progress report● Neutral

Third-party Beach weekly report: Santos-operated Deparanie-2 was cased and suspended pending evaluation, and Big Lake-88 was plugged and abandoned as unsuccessful. Mudera-14 RE1 is a gas development re-entry.

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16 July 2008drilling spud● Neutral

AWE reports Pecten East-1 was plugged and abandoned at 1,993 m, and Netherby-1 began drilling 15 July in Santos-operated VIC/P 44 (Santos 50%). It targets the Waarre A sand to 1,823 m, about 4 km north of Henry-1.

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15 July 2008drilling progress report● Neutral

Bow update: Hudson-1 was at 2,262 m with minor oil shows, still short of the Doonmulla target. Also notes Mosaic's Jawsone-1 spudded in the Surat Basin, which is not a Santos well.

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15 July 2008drilling progress report● Neutral

Third-party Victoria Petroleum release repeating that Santos' Hudson-1 was at 2,262 m with minor oil shows. Vicpet is carried and keeps 15% of ATP 752P. Nothing new on the well.

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