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为适应国家油气勘探的需要,加快西部油气勘探步伐,缩短建井周期,目前在超深井油气钻探过程中开始越来越多的使用钻井新工艺,如在目的层段使用PDC钻头钻进、欠平衡钻进、大位移水平井使用混油钻井液、复杂工况使用油基钻井液钻进等,这给现场录井工作提出了许多新的技术要求,以往在常规钻井过程中应用的录井方法,在目前超深井特殊钻井工艺条件下已不能完全适用,因此对常规录井方法进行改进,以准确判定地层岩性,落实地质层位,及时发现油气显示,提高资料录取质量,已成为现场录井工作人员的必然选择。
In order to meet the needs of oil and gas exploration in the country, we accelerated the pace of oil and gas exploration in western China and shortened the well construction cycle. At present, more and more new drilling technologies are being used in ultra-deep well drilling. For example, using PDC bits to drill in the target interval, Balanced drilling, large displacement horizontal well using mixed oil drilling fluid, complex conditions using oil-based drilling fluid drilling, etc., which put forward a lot of new technical requirements for on-site logging work, in the past in the conventional drilling application of logging Method can not be fully applied in the current ultra-deep well special drilling process conditions. Therefore, the conventional logging methods are improved to accurately determine the lithology of the strata, implement the geological stratigraphy, discover the oil and gas in time and improve the quality of data acquisition, which has become the site Logging staff inevitable choice.