• 作者： Chiao, Shu-Min; Chang, H. Chia
• 中文摘要： 在原油探採的過程中,油井壁打孔(well perforation)無疑具有決定性的影響。當此一程序操作不正確時,往往導致產量的減少,甚至提早棄井。因此,吾人亟需一有效之分析方法,來協助判定穿孔槍之優劣,以及打孔程序之善否。本研究由一維流動問題著手,結合「深層過濾理論」,得到一半經驗式,足以作為穿孔槍優劣判定的標準。此外,利用「濾餅過濾理論」,吾人亦證實較低的打孔井與較短的過濾時間(井壓較油層壓力高之時),均有利於原油之生產率。事實上,本研究所發展之半經驗式若與穿孔槍之標準測試相結合,即成為最適化分析之最佳工具。
• 英文摘要： One of the major factors which cause oil well abandonment in the petroleum industry is inadequate perforations, including incorrect sizes, number, or penetration radius and depth. An effective method, therefore, is needed for the evaluation of perforators. In this study, we extracted a basic empirical correlation which allows easy comparison of model calculations against experimental data. We demonstrated that the effectiveness of different perforators can be characterized by a simple empirical measurement. Moreover, using cake filtration theory, we are able to derive the observed dependency between the production rate and the filtration time (the period after perforation when there is an over-balance of oil pressure over formation pressure). In fact, the final correlation relates the final production rate to all perforation conditions and is ideal for the optimization of the field perforation processes.
• 中文關鍵字： 鑽孔; 穿孔器; 過濾; 濾餅過濾理論
• 英文關鍵字： Perforation; Perforator; Filtration; Cake Filtration Theory