摘要
珠江口盆地恩平阳江凹陷普遍发育低阻储层,因井距较大,且分布不均,随钻水平地质导向井轨迹难度较大。利用录井资料(三维定量荧光录井资料、气测录井资料、地化录井资料)建立录井含油气指数曲线,结合地震资料与随钻测井资料,利用序贯指示和序贯高斯建模方法,分层次建立了地质格架模型、岩性预测模型及录井含油气指数模型。这一系列模型的建立,不仅提高了对地下地层特征的理解,也为工区的地质导向提供了科学依据。研究表明:建立的录井含油气指数三维模型在X油田实际应用中表现出色,与各项测录井参数符合率达90%以上;实钻井层位深度、岩性和录井含油气指数与录井含油气指数三维模型中预测结果高度一致,岩性符合率达到95%以上,录井含油气指数符合率可达90%以上。通过精确匹配实际钻井数据与模型预测,极大地增强了地质模型的可信度。总之,通过创新录井参数建模方法对高效指导稀疏井网开发水平井轨迹导向意义重大,不仅提升了勘探的成功率,也为后续的资源开发提供了更为科学的决策依据。
Low-resistivity reservoirs are widely developed in Enping-Yangjiang depression of Pearl River Mouth Basin.Logging data(three-dimensional quantitative fluorescence logging data,gas logging data,geochemistry logging data)are used to establish hydrocarbon index curves.The establishment of this series of models not only enhances the understanding of underground strata characteristics but also provides a scientific basis for geological guidance in the work area.The results show that the three-dimensional model of logging oil and gas index established has performed well in the practical application in X Oilfield.and the coincidence rate with variou s logging parameters is more than 90%.The depth of the actual drilling layer,lithology and logging hydrocarbon index are highly consistent with the predicted results in the three-dimensional model of logging hydrocarbon index,lithology reaches more than 95%,and the logging oil and gas index model can reach more than 90%.By precisely matching the actual drilling data with the model prediction,the credibility of the geological model has been greatly enhanced.In conclusion,the innovative logging parameter modeling method is of great significance for efficiently guiding the trajectory orientation of horizontal wells in sparse well pattern development.It not only improves the success rate of exploration but also provides a more scientific decision-making basis for subsequent resource development.
作者
刘娟霞
毛敏
杨毅
LIU Juanxia;MAO Min;YANG Yi(China-France Bohai Geoservices Co.,Ltd.,Tianjing 300452)
出处
《长江大学学报(自然科学版)》
2025年第1期91-98,共8页
Journal of Yangtze University(Natural Science Edition)
基金
油气藏地质及开发工程国家重点实验室开放课题“原位颗粒作用下页岩自支撑裂缝导流能力研究”(PLN2022-9)。
关键词
含油气指数
录井参数三维地质建模
水平井
地质导向
oil and gas index
three-dimensional geological modeling of mud logging parameters
horizontal well
geo-steering
