地層損害與油氣探勘之關係

The Relationship between Formation Damage and Petroleum Exploration

林振村(Jenn-Tsuen Lin) ； 黃定雄(Ding-Shyong Huang)

《鑛冶：中國鑛冶工程學會會刊》 40卷2期 (1996/06) Pp. 40-50

https://doi.org/10.30069/MM.199606_40(2).0004

摘要

本研究探討各種可能造成地層損害（汚損）之原因，降低地層損害之方法，並檢討如何避免地層損害封電測解釋及地層測試之誤判。本研究設計一套實驗設備，以證實某些油氣田之天然氣會與濾液發生作用，產生沈澱而阻塞油氣通道。應用地層損害評估觀念，以解釋寶山十一號井及錦水八十一號井試油氣之結果。後者於第一次地層測驗測試產生大量的水，工程人員對該井處理後，進行第二次地層測驗試氣，結果氣量增大兩倍，水量減少至四十四分之一。我們認為很可能在過去探勘井亦有類似情況，而將一個油氣田埋沒了，並期望應用此種觀念能發現新的油氣田。

關鍵字

地層損害 ； 電測 ； 油氣測試 ； 泥漿

並列摘要

This paper describes that formation damage is a descriptive term depicting reductions of near-well bore permeability brought by drilling, completion or production operations. An erratic log interpretation or DST test can be made when the formation was seriously damaged. An experimental test to study the inter action between filter and reservoir fluid was performed. Test results shown that some incompatibility between filter and formation fluid can induce precipitation in the near well bore area and reduce the permeability of payzones. The abnormal formation test results of PS-11 well and CS-81 well are also discussed on the basis of formation damage. The authors believe that some reservoirs are overlooked by the similar reason as CS-81 well in the past decades.

並列關鍵字

Formation damage ； Well formation test ； Drilling mud