{"id":"analysis-carbon-storage-injection-hours-mass-balance-october-2026","canonicalSlug":"analysis-carbon-storage-injection-hours-mass-balance-october-2026","url":"https://wellficent.com/en/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","language":"en","title":"Carbon storage: operating hours change the meaning of annual capacity","summary":"An illustrative mass-balance analysis separates aggregate injection requirements, fixed-cost dilution and verified emissions reductions.","body":["INEOS's September 18 Greensand opening announcement expects up to 400,000 tonnes of CO₂ storage annually in its first commercial phase. That is a planning reference, not measured annual injection. The depleted Nini West reservoir lies about 1,800 metres beneath the seabed; this description is not a measured well depth. The following independent calculations do not estimate Greensand's performance.","For an assumed 400,000 tonnes over 8,760 hours, the calendar-average mass rate is 45.6621 tonnes/hour. At assumed effective operating availability of 70%, 80% and 90%, required aggregate mean rates during operating hours become 65.2316, 57.0776 and 50.7357 tonnes/hour. The 80% case is 25% above the calendar average. Availability represents the shared chain's effective operating hours, without adding separate outage allowances. These are neither per-well rates nor demonstrated injectivity or capacity guarantees.","A separate hypothetical annual fixed cost of USD 10 million divided by assumed delivered volumes of 400,000 or 350,000 tonnes gives USD 25 or 28.5714 per tonne. This illustrates fixed-cost dilution only, excluding variable costs and capital recovery. It is not an INEOS cost, tariff, total storage cost or project valuation.","Accounting must reconcile received mass minus stock increases, exports and losses with injection, using meters and stated uncertainty. Stored CO₂ is not automatically verified net emissions reduction: lifecycle boundaries matter. Reservoir pressure, injectivity and fracture constraints remain unknown here; this arithmetic supplies no operating recommendation or actual forecast."],"keyPoints":[],"sections":[],"text":"Carbon storage: operating hours change the meaning of annual capacity\n\nAn illustrative mass-balance analysis separates aggregate injection requirements, fixed-cost dilution and verified emissions reductions.\n\nINEOS's September 18 Greensand opening announcement expects up to 400,000 tonnes of CO₂ storage annually in its first commercial phase. That is a planning reference, not measured annual injection. The depleted Nini West reservoir lies about 1,800 metres beneath the seabed; this description is not a measured well depth. The following independent calculations do not estimate Greensand's performance.\n\nFor an assumed 400,000 tonnes over 8,760 hours, the calendar-average mass rate is 45.6621 tonnes/hour. At assumed effective operating availability of 70%, 80% and 90%, required aggregate mean rates during operating hours become 65.2316, 57.0776 and 50.7357 tonnes/hour. The 80% case is 25% above the calendar average. Availability represents the shared chain's effective operating hours, without adding separate outage allowances. These are neither per-well rates nor demonstrated injectivity or capacity guarantees.\n\nA separate hypothetical annual fixed cost of USD 10 million divided by assumed delivered volumes of 400,000 or 350,000 tonnes gives USD 25 or 28.5714 per tonne. This illustrates fixed-cost dilution only, excluding variable costs and capital recovery. It is not an INEOS cost, tariff, total storage cost or project valuation.\n\nAccounting must reconcile received mass minus stock increases, exports and losses with injection, using meters and stated uncertainty. Stored CO₂ is not automatically verified net emissions reduction: lifecycle boundaries matter. Reservoir pressure, injectivity and fracture constraints remain unknown here; this arithmetic supplies no operating recommendation or actual forecast.\n\nTechnical and economic analysis\n\nAnalysis as of: 2026-10-08\n\nEvidence cutoff: 2026-09-18\n\nOutlook horizon: 8 760 h\n\nIllustrative sensitivity\n\nRequired aggregate operating mass rate at assumed availability\n\nAssumed 400,000 tonnes in 8,760 calendar hours; rate = 400,000 / (8,760 × availability). Availability covers shared-chain effective operating hours without separate outage additions. Aggregate planning arithmetic, not per-well injectivity, measured performance, a capacity guarantee or a forecast.\n\nThese calculations illustrate stated assumptions; they are not observations or a calibrated forecast.\n\nAssumed 70% effective availability: 65.2316 tonnes CO₂ per operating hour\n\nAssumed 80% effective availability: 57.0776 tonnes CO₂ per operating hour\n\nAssumed 90% effective availability: 50.7357 tonnes CO₂ per operating hour","category":"energy","region":"world","topics":["denmark","injection-wells","carbon-storage","mass-balance"],"eventDate":"2026-10-08","eventDateBasis":"analysis-as-of-date","publishedAt":"2026-10-08T13:39:44Z","modifiedAt":"2026-10-08T13:39:44Z","publicationBasis":"first-publication","preparedAt":"2026-10-08T13:27:43Z","sourcePublishedAt":"2026-09-18","translatedAt":null,"sources":[{"name":"INEOS","url":"https://www.ineos.com/news/shared-news/ineos-opens-the-first-full-scale-co%E2%82%82-storage-site-in-the-eu/","publishedAt":"2026-09-18","checkedAt":"2026-10-08"}],"translations":{"en":"https://wellficent.com/en/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","tr":"https://wellficent.com/tr/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","ar":"https://wellficent.com/ar/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","fr":"https://wellficent.com/fr/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","es":"https://wellficent.com/es/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","ru":"https://wellficent.com/ru/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026","pt":"https://wellficent.com/pt/news/analysis-carbon-storage-injection-hours-mass-balance-october-2026"},"corrections":[],"locations":[{"id":"country-dk","type":"country","countryCode":"DK","name":{"en":"Denmark","tr":"Danimarka","ar":"الدنمارك","fr":"Danemark","es":"Dinamarca","ru":"Дания","pt":"Dinamarca"},"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":"INEOS","url":"https://www.ineos.com/news/shared-news/ineos-opens-the-first-full-scale-co%E2%82%82-storage-site-in-the-eu/","publishedAt":"2026-09-18","checkedAt":"2026-10-08"}}],"type":"analysis","analysis":{"kind":"technical-economic","asOf":"2026-10-08","evidenceCutoff":"2026-09-18","horizon":"8 760 h","chart":{"kind":"illustrative","title":{"en":"Required aggregate operating mass rate at assumed availability","tr":"Varsayılan kullanılabilirlikte gereken toplam çalışma kütle debisi","ar":"معدل الكتلة التشغيلي الإجمالي المطلوب عند إتاحة مفترضة","fr":"Débit massique global requis en fonctionnement selon la disponibilité supposée","es":"Caudal másico agregado requerido en operación según disponibilidad supuesta","ru":"Необходимый совокупный массовый расход в работе при условной доступности","pt":"Vazão mássica agregada necessária em operação segundo disponibilidade suposta"},"unit":"t/h","unitLabel":{"en":"tonnes CO₂ per operating hour","tr":"çalışma saati başına ton CO₂","ar":"طن CO₂ لكل ساعة تشغيل","fr":"tonnes de CO₂ par heure de fonctionnement","es":"toneladas de CO₂ por hora operativa","ru":"тонн CO₂ за рабочий час","pt":"toneladas de CO₂ por hora operacional"},"note":{"en":"Assumed 400,000 tonnes in 8,760 calendar hours; rate = 400,000 / (8,760 × availability). Availability covers shared-chain effective operating hours without separate outage additions. Aggregate planning arithmetic, not per-well injectivity, measured performance, a capacity guarantee or a forecast.","tr":"8.760 takvim saatinde 400.000 ton varsayımı; debi = 400.000 / (8.760 × kullanılabilirlik). Kullanılabilirlik, ayrı duruş ilaveleri olmadan ortak zincirin etkin çalışma saatlerini kapsar. Toplam planlama aritmetiğidir; kuyu başına enjekte edilebilirlik, ölçülmüş performans, kapasite garantisi veya tahmin değildir.","ar":"افتراض 400,000 طن خلال 8,760 ساعة تقويمية؛ المعدل = 400,000 / (8,760 × الإتاحة). تشمل الإتاحة ساعات التشغيل الفعلية للسلسلة المشتركة دون إضافات منفصلة للتوقف. حساب تخطيطي إجمالي، وليس قابلية حقن لكل بئر أو أداء مقاسا أو ضمان سعة أو توقعا.","fr":"Hypothèse de 400 000 tonnes sur 8 760 heures calendaires ; débit = 400 000 / (8 760 × disponibilité). La disponibilité couvre les heures effectives de la chaîne commune, sans ajouts distincts pour les arrêts. Calcul global de planification, pas une injectivité par puits, une performance mesurée, une garantie de capacité ou une prévision.","es":"Supuesto de 400.000 toneladas en 8.760 horas del calendario; caudal = 400.000 / (8.760 × disponibilidad). La disponibilidad cubre horas efectivas de la cadena compartida sin añadir paradas independientes. Cálculo agregado de planificación, no inyectividad por pozo, rendimiento medido, garantía de capacidad ni pronóstico.","ru":"Условные 400 000 тонн за 8 760 календарных часов; расход = 400 000 / (8 760 × доступность). Доступность охватывает эффективные рабочие часы общей цепочки без отдельных добавок на простои. Совокупный расчет для планирования, а не приемистость скважины, измеренные показатели, гарантия мощности или прогноз.","pt":"Supostas 400.000 toneladas em 8.760 horas do calendário; vazão = 400.000 / (8.760 × disponibilidade). A disponibilidade cobre horas efetivas da cadeia compartilhada sem adicionar paradas independentes. Cálculo agregado de planejamento, não injetividade por poço, desempenho medido, garantia de capacidade ou previsão."},"rows":[{"label":{"en":"Assumed 70% effective availability","tr":"Varsayılan yüzde 70 etkin kullanılabilirlik","ar":"إتاحة فعلية مفترضة 70%","fr":"Disponibilité effective supposée de 70 %","es":"Disponibilidad efectiva supuesta del 70%","ru":"Условная эффективная доступность 70%","pt":"Disponibilidade efetiva suposta de 70%"},"value":65.231572080887},{"label":{"en":"Assumed 80% effective availability","tr":"Varsayılan yüzde 80 etkin kullanılabilirlik","ar":"إتاحة فعلية مفترضة 80%","fr":"Disponibilité effective supposée de 80 %","es":"Disponibilidad efectiva supuesta del 80%","ru":"Условная эффективная доступность 80%","pt":"Disponibilidade efetiva suposta de 80%"},"value":57.077625570776},{"label":{"en":"Assumed 90% effective availability","tr":"Varsayılan yüzde 90 etkin kullanılabilirlik","ar":"إتاحة فعلية مفترضة 90%","fr":"Disponibilité effective supposée de 90 %","es":"Disponibilidad efectiva supuesta del 90%","ru":"Условная эффективная доступность 90%","pt":"Disponibilidade efetiva suposta de 90%"},"value":50.73566717402334}]}}}