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针对泌阳凹陷稠油区油层埋藏浅、成岩性差、地层相变严重、非均质性强的特点,在分析该区稠油形成原因和气测异常特征的基础上,认为在该稠油区钻大斜度井及水平井时,应用气测录井进行地质导向具有反应速度快、抗污染能力强、可有效恢复岩性剖面的优势。根据该稠油区气测录井的全烃和甲烷特征,结合钻时及相关录井资料,以XD1井大斜度定向井为例,阐述了适用于该稠油区的气测录井的地质导向和油层解释方法。实际应用情况表明,气测录井结合钻时进行该稠油区钻井过程中的地质导向,比使用LWD等先进装备具有开发成本低、技术上简便可靠的特点,且效果较好。
According to the characteristics of shallow reservoir, poor diagenesis, serious phase change and strong heterogeneity in the heavy oil area of Biyang depression, based on the analysis of the formation reason of heavy oil in this area and the abnormal characteristics of gas measurement, In the case of large-angle wells and horizontal wells, the application of gas logging wells for geosteering has the advantages of fast reaction rate, strong anti-pollution ability and effective recovery of lithological profiles. According to the characteristics of total hydrocarbon and methane in this heavy oil zone gas logging well, taking the well drilling time and related logging data as an example, taking XD1 well directional well as an example, the gas logging suitable for this heavy oil zone is described Geosteering and reservoir interpretation methods. The practical application indicates that the geosteering in the heavy oil area during gas logging combined with drilling has the advantages of low development cost, technical simplicity and reliability, and better effect than the use of advanced equipment such as LWD.