欠平衡钻井适用地层及钻井效果影响因素分析

Stratum Applicable for Underbalanced Drilling and the Analysis on Influence Factors to Drilling Effect

摘要:

国内外应用欠平衡钻井技术提高采收率取得了很大成就，大庆进行了多口井液相欠平衡钻井的现场试验，但提高产量和经济效益效果不明显。针对此问题，从理论上探索影响欠平衡钻井效果的地质因素和工艺因素，提出了欠平衡钻井需要进一步研究的技术和应用方向。

Abstract:

Great achievement has been made in enhanced oil recovery by the application of unbalanced drilling technology both in China and abroad, but the field tests of liquid phase underbalanced drilling were made in several wells without the obvious effects of increasing yield and economic benefit in Daqing. In this case, the geological and technological factors that influence the effects of underbalanced drilling are explored in theory and the technologies and application direction that should be further researched for underbalanced drilling are put forward with suggestions in this paper.