{"id":"analysis-small-field-appraisal-value-of-information-october-2026","canonicalSlug":"analysis-small-field-appraisal-value-of-information-october-2026","url":"https://wellficent.com/en/news/analysis-small-field-appraisal-value-of-information-october-2026","language":"en","title":"Small-field appraisal: information has value when it changes a decision","summary":"A hypothetical decision tree tests the value of appraisal before development; its probabilities and financial outcomes are assumptions, not PETRONAS results.","body":["PETRONAS's September 11 release reports an Estuary small-field contract award and enhanced seismic-data handover for Mutiara. Its internal dateline is September 9. Better information can support development decisions, but receiving data alone proves neither commercial success nor immediate economic value. The independent decision tree here uses hypothetical figures, not field valuations or measured seismic accuracy.","Assume development yields a net USD 20 million if successful and loses USD 10 million otherwise, with a subjective success probability of 40%. Expected payoff is USD 2 million; abstaining gives zero, so development is the baseline choice. Assume an unvalidated binary appraisal test with sensitivity 80% and specificity 90%. Positive results occur with probability 38%; success probabilities conditional on positive and negative results are 84.2105% and 12.9032%.","Under these assumptions, development after a negative result has a negative expected payoff, so develop only after positive results. The unconditional payoff before test cost is 0.32 × USD 20 million minus 0.06 × USD 10 million, or USD 5.8 million. Subtracting an assumed USD 1.5 million upfront test cost gives USD 4.3 million, an improvement of USD 2.3 million over the baseline. Test costs of USD 1 million and USD 2 million instead give USD 4.8 million and USD 3.8 million.","Perfect information would produce expected payoff of USD 8 million before its unknown cost, implying a maximum information value of USD 6 million above baseline. This model excludes discounting, taxes and portfolio effects. No independent dataset validates its probabilities; actual appraisal evidence, costs and decision alternatives would be needed before applying it to a project."],"keyPoints":[],"sections":[],"text":"Small-field appraisal: information has value when it changes a decision\n\nA hypothetical decision tree tests the value of appraisal before development; its probabilities and financial outcomes are assumptions, not PETRONAS results.\n\nPETRONAS's September 11 release reports an Estuary small-field contract award and enhanced seismic-data handover for Mutiara. Its internal dateline is September 9. Better information can support development decisions, but receiving data alone proves neither commercial success nor immediate economic value. The independent decision tree here uses hypothetical figures, not field valuations or measured seismic accuracy.\n\nAssume development yields a net USD 20 million if successful and loses USD 10 million otherwise, with a subjective success probability of 40%. Expected payoff is USD 2 million; abstaining gives zero, so development is the baseline choice. Assume an unvalidated binary appraisal test with sensitivity 80% and specificity 90%. Positive results occur with probability 38%; success probabilities conditional on positive and negative results are 84.2105% and 12.9032%.\n\nUnder these assumptions, development after a negative result has a negative expected payoff, so develop only after positive results. The unconditional payoff before test cost is 0.32 × USD 20 million minus 0.06 × USD 10 million, or USD 5.8 million. Subtracting an assumed USD 1.5 million upfront test cost gives USD 4.3 million, an improvement of USD 2.3 million over the baseline. Test costs of USD 1 million and USD 2 million instead give USD 4.8 million and USD 3.8 million.\n\nPerfect information would produce expected payoff of USD 8 million before its unknown cost, implying a maximum information value of USD 6 million above baseline. This model excludes discounting, taxes and portfolio effects. No independent dataset validates its probabilities; actual appraisal evidence, costs and decision alternatives would be needed before applying it to a project.\n\nTechnical and economic analysis\n\nAnalysis as of: 2026-10-08\n\nEvidence cutoff: 2026-09-11\n\nOutlook horizon: 2026–2029\n\nIllustrative sensitivity\n\nExpected strategy payoff after assumed test cost\n\nHypothetical net success/failure payoffs +USD 20M/−USD 10M, subjective prior 40%, assumed unvalidated test sensitivity 80%/specificity 90%. Develop only after positive results: expected payoff USD 5.8M minus test cost. No-test baseline USD 2M. Not measured seismic accuracy, PETRONAS financial results, field valuation or a forecast.\n\nThese calculations illustrate stated assumptions; they are not observations or a calibrated forecast.\n\nAssumed upfront test cost USD 1 million: 4.8 million USD expected payoff\n\nAssumed upfront test cost USD 1.5 million: 4.3 million USD expected payoff\n\nAssumed upfront test cost USD 2 million: 3.8 million USD expected payoff","category":"energy","region":"world","topics":["malaysia","oil-gas","appraisal","value-of-information"],"eventDate":"2026-10-08","eventDateBasis":"analysis-as-of-date","publishedAt":"2026-10-08T15:04:42Z","modifiedAt":"2026-10-08T15:04:42Z","publicationBasis":"first-publication","preparedAt":"2026-10-08T14:14:48Z","sourcePublishedAt":"2026-09-11","translatedAt":null,"sources":[{"name":"PETRONAS","url":"https://www.petronas.com/media/media-releases/petronas-progresses-malaysias-upstream-development-estuary-cluster-psc-award","publishedAt":"2026-09-11","checkedAt":"2026-10-08"}],"translations":{"en":"https://wellficent.com/en/news/analysis-small-field-appraisal-value-of-information-october-2026","tr":"https://wellficent.com/tr/news/analysis-small-field-appraisal-value-of-information-october-2026","ar":"https://wellficent.com/ar/news/analysis-small-field-appraisal-value-of-information-october-2026","fr":"https://wellficent.com/fr/news/analysis-small-field-appraisal-value-of-information-october-2026","es":"https://wellficent.com/es/news/analysis-small-field-appraisal-value-of-information-october-2026","ru":"https://wellficent.com/ru/news/analysis-small-field-appraisal-value-of-information-october-2026","pt":"https://wellficent.com/pt/news/analysis-small-field-appraisal-value-of-information-october-2026"},"corrections":[],"locations":[{"id":"country-my","type":"country","countryCode":"MY","name":{"en":"Malaysia","tr":"Malezya","ar":"ماليزيا","fr":"Malaisie","es":"Malasia","ru":"Малайзия","pt":"Malásia"},"context":{"en":"Country identified in the primary source; no site coordinates asserted.","tr":"Birincil kaynakta belirtilen ülke; saha koordinatı iddiası yok.","ar":"البلد المحدد في المصدر الأصلي؛ لا ندعي إحداثيات موقع.","fr":"Pays identifié dans la source primaire; aucune coordonnée de site affirmée.","es":"País identificado en la fuente primaria; no se afirman coordenadas del sitio.","ru":"Страна указана в первоисточнике; координаты площадки не заявлены.","pt":"País identificado na fonte primária; não se afirmam coordenadas do local."},"source":{"name":"PETRONAS","url":"https://www.petronas.com/media/media-releases/petronas-progresses-malaysias-upstream-development-estuary-cluster-psc-award","publishedAt":"2026-09-11","checkedAt":"2026-10-08"}}],"type":"analysis","analysis":{"kind":"technical-economic","asOf":"2026-10-08","evidenceCutoff":"2026-09-11","horizon":"2026–2029","chart":{"kind":"illustrative","title":{"en":"Expected strategy payoff after assumed test cost","tr":"Varsayılan test maliyeti sonrası stratejinin beklenen getirisi","ar":"العائد المتوقع للاستراتيجية بعد تكلفة الاختبار المفترضة","fr":"Gain espéré de la stratégie après coût supposé du test","es":"Beneficio esperado de la estrategia después del coste supuesto de prueba","ru":"Ожидаемый результат стратегии после условной стоимости теста","pt":"Resultado esperado da estratégia após custo suposto do teste"},"unit":"USD million","unitLabel":{"en":"million USD expected payoff","tr":"milyon ABD doları beklenen getiri","ar":"مليون دولار أمريكي من العائد المتوقع","fr":"millions de dollars américains de gain espéré","es":"millones de dólares estadounidenses de beneficio esperado","ru":"миллионов долларов США ожидаемого результата","pt":"milhões de dólares americanos de resultado esperado"},"note":{"en":"Hypothetical net success/failure payoffs +USD 20M/−USD 10M, subjective prior 40%, assumed unvalidated test sensitivity 80%/specificity 90%. Develop only after positive results: expected payoff USD 5.8M minus test cost. No-test baseline USD 2M. Not measured seismic accuracy, PETRONAS financial results, field valuation or a forecast.","tr":"Varsayımsal net başarı/başarısızlık getirileri +20/−10 milyon ABD doları, öznel öncül olasılık yüzde 40; doğrulanmamış test duyarlılığı yüzde 80/özgüllüğü yüzde 90 varsayımı. Yalnız pozitif sonuç sonrası geliştirme: beklenen getiri 5,8 milyon ABD doları eksi test maliyeti. Testsiz başlangıç 2 milyon ABD doları. Ölçülmüş sismik doğruluk, PETRONAS mali sonucu, saha değerlemesi veya tahmin değil.","ar":"عوائد صافية افتراضية للنجاح/الفشل +20/−10 ملايين دولار؛ احتمال قبلي ذاتي 40%؛ حساسية 80% ونوعية 90% مفترضتان لاختبار غير متحقق منه. التطوير بعد الإيجابي فقط: عائد متوقع 5.8 ملايين ناقص تكلفة الاختبار. الأساس دون اختبار مليونا دولار. ليست دقة زلزالية مقاسة أو نتائج PETRONAS المالية أو تقييما للحقول أو توقعا.","fr":"Gains nets hypothétiques succès/échec +20/−10 millions USD ; probabilité subjective initiale 40% ; sensibilité 80%/spécificité 90% supposées pour un test non validé. Développer seulement après résultat positif : gain espéré 5,8 millions USD moins coût du test. Cas sans test 2 millions USD. Ni précision sismique mesurée, ni résultats financiers PETRONAS, valorisation de champ ou prévision.","es":"Resultados netos hipotéticos éxito/fracaso +20/−10 millones USD; probabilidad previa subjetiva 40%; sensibilidad 80%/especificidad 90% supuestas de una prueba no validada. Desarrollar solo tras positivos: beneficio esperado 5,8 millones USD menos coste de prueba. Caso sin prueba 2 millones USD. No es precisión sísmica medida, resultados financieros PETRONAS, valoración de campos ni pronóstico.","ru":"Условные чистые результаты успеха/неудачи +20/−10 миллионов USD; субъективная исходная вероятность 40%; условные чувствительность 80%/специфичность 90% непроверенного теста. Освоение лишь после положительного результата: ожидаемые 5,8 миллиона USD минус стоимость теста. Без теста 2 миллиона USD. Не измеренная точность сейсморазведки, не финансовые результаты PETRONAS, оценка стоимости поля или прогноз.","pt":"Resultados líquidos hipotéticos sucesso/fracasso +20/−10 milhões USD; probabilidade inicial subjetiva 40%; sensibilidade 80%/especificidade 90% supostas de teste não validado. Desenvolver apenas após positivos: resultado esperado 5,8 milhões USD menos custo do teste. Caso sem teste 2 milhões USD. Não é precisão sísmica medida, resultados financeiros PETRONAS, avaliação de campos ou previsão."},"rows":[{"label":{"en":"Assumed upfront test cost USD 1 million","tr":"Varsayılan peşin test maliyeti 1 milyon ABD doları","ar":"تكلفة اختبار مقدمة مفترضة مليون دولار","fr":"Coût initial supposé du test 1 million USD","es":"Coste inicial supuesto de prueba 1 millón USD","ru":"Условная первоначальная стоимость теста 1 миллион USD","pt":"Custo inicial suposto do teste 1 milhão USD"},"value":4.8},{"label":{"en":"Assumed upfront test cost USD 1.5 million","tr":"Varsayılan peşin test maliyeti 1,5 milyon ABD doları","ar":"تكلفة اختبار مقدمة مفترضة 1.5 مليون دولار","fr":"Coût initial supposé du test 1,5 million USD","es":"Coste inicial supuesto de prueba 1,5 millones USD","ru":"Условная первоначальная стоимость теста 1,5 миллиона USD","pt":"Custo inicial suposto do teste 1,5 milhão USD"},"value":4.3},{"label":{"en":"Assumed upfront test cost USD 2 million","tr":"Varsayılan peşin test maliyeti 2 milyon ABD doları","ar":"تكلفة اختبار مقدمة مفترضة مليونا دولار","fr":"Coût initial supposé du test 2 millions USD","es":"Coste inicial supuesto de prueba 2 millones USD","ru":"Условная первоначальная стоимость теста 2 миллиона USD","pt":"Custo inicial suposto do teste 2 milhões USD"},"value":3.8}]}}}