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通过对南堡油田奥陶系古潜山及南堡凹陷周边古潜山储层特征的研究,结合试油效果分析,初步形成了1套古潜山勘探完井方式的选择原则。研究认为,南堡油田奥陶系古潜山南堡1、2、5号构造适合采用裸眼方法完井,南堡凹陷周边古潜山油藏应采用筛管+盲管或射孔方法完井。根据油气藏不同特点,选择不同的完井方式,以缩短钻井周期、减少储层污染,且要满足后续试油施工的各种要求;工艺技术的进步和地质认识的提高是古潜山获得突破的前提和基础。
Through the research on the features of ancient buried hill reservoirs in Ordovician buried hill and Nanpu depression in Nanpu Oilfield and the analysis of test oil effect, the principle of selecting one set of buried hill exploration and completion method is preliminarily established. The study shows that the structures of No. 1, No. 2 and No. 5 Ordovician Nanzubao buried hills in Nanpu Oilfield are suitable for completion by naked-eye method. The buried hill reservoirs around Nanpu Sag should be completed by screen-blind + blind pipe or perforation method. According to different characteristics of oil and gas reservoirs, different completion methods are selected to shorten the drilling cycle and reduce reservoir pollution, and to meet the various requirements of subsequent oil test. Advances in technology and geological awareness are breakthroughs in the buried hill The premise and foundation.