欠平衡钻井综合录井技术研究

Research on Mudlogging Technique during Underbalanced Drilling

近年,采用欠平衡钻井技术,许多油田在一些老区和新区实现了勘探突破。然而,欠平衡钻井技术的应用给常规综合录井工作带来了一系列问题,对录井技术提出了新的挑战。根据欠平衡钻井技术特点,结合目前国内录井设备和技术现状,通过分析欠平衡钻井技术对录井工作的影响,提出了相应的设备配套技术和录井方法,并对在欠平衡钻井条件下如何进行地层气体和钻井欠压值的实时连续监测进行了探讨。

Recently underbalanced drilling technology has been applied widely in inner market. Adopting the technology, many oilfields have made a great breakthrough in exploration of old and new blocks. However, due to the application of underbalanced drilling technology,mudlogging operation faces many problems and challenges. By analyzing the influences of underbalanced drilling technology on mudlogging operation, according to the feature of underbalanced drilling technology and the status of mudlogging equipment, this paper discusses the suitable equipments and methods, and how to monitor formation gases and drilling pressure differences continuously.