- 期刊
利用物質平衡法估算錦水氣田剩餘油氣埋藏量
Material Balance Assessment of Remaining Gas in Place in Chin-Shui Field
摘要
國內油氣資源經數十年開採，自產天然氣已大幅降低，為穩定國內油氣之供應，中油公司除了探勘新油氣田外，亦針對國內現有油氣礦區如錦水氣田等，積極進行油氣層潛能研究，以求達成國內老舊或成熟油氣田有效再開發，提升氣田採收率。本研究主要針對剩餘埋藏量具潛能之錦水氣田C地塊第28層，利用物質平衡法進行原始埋藏量分析。結果顯示錦水C地塊第28層之原始埋藏量為18.86億立方公尺，累計已產之天然氣產量為8.6億立方公尺，採收率45.6%；對比使用體積法之結果，物質平衡法推估結果偏向於樂觀推估值18.51億立方公尺。C地塊第28層原始埋藏量豐富，剩餘埋藏量約為10.26億立方公尺，極具增產之條件與價值。成果可供後續油層模擬及未來現場單位鑽井後分析與產能驗證。
並列摘要
Taiwan natural gas resource has decreased significantly after decades of exploitation. To increase the natural gas resource, CPC corporation not only explores for new fields but also enhances natural gas recovery from matured reservoirs. Our research focused on C block-28th in Chin- Shui field because of its high gas potential and remaining gas in place (RGIP). Our results showed that the original gas in place (OGIP) from material balance was 1,886 MMSCM, the cumulate production was 860 MMSCM and the recovery factor was 45.6%. The original gas in place estimated by volumetric method was 1,851 MMSCM. The RGIP was 1,026 MMSCM, indicating a high potential for enhanced production. Our result should be a good reference for future reservoir simulation study and evaluation after drilling.