摘要
目前的精细地震预测技术很大程度上是勘探阶段地震解释技术的延伸,受研究方法与复杂地质条件影响,在解决油田开发阶段小尺度储层描述时仍具有较大局限性。针对开发阶段小层解释与储层预测的要求与难点,建立了不同于勘探阶段地震资料解释的思路,提出了开发阶段地震波形解释工作流程,将地震资料解释从原有的大尺度波组特征分析细化至波形特征分析。具体包括3个步骤:(1)建立地震波形与岩性/储层结构的关系,统计层面顶界地震相位变化特征;(2)基于岩性组合与地震波形变化关系,分区带变相位解释开发小层;(3)开展深度域地震波形指示高精度储层定量预测。在上述研究步骤中均充分考虑地震波形特征。以哈法亚油田Hartha油藏为研究对象,利用地震波形刻画生屑滩、约束开发小层解释、指示储层反演,研究成果符合开发阶段高精度储层预测要求。
The current fine seismic prediction technology, to a certain extent, is an extension of seismic interpretation technology at the exploration stage. Influenced by the research method and complex geological conditions, the prediction technology is dramatically limited in description of small-size reservoir structures at the oilfield development stage. The mindset for seismic data interpretation which is different from that at the exploration is established to settle the requirements and bottlenecks for interpretation of small-size layers and reservoir prediction. This paper puts forward the seismic waveform interpretation work process at the development stage, making seismic data interpretation detailed from analysis of the original large-size wave group characteristics to analysis of the waveform characteristics.It includes three steps:(1) establishing the relations between seismic waveform and lithology/reservoir structure and characterizing seismic phase variations on the top of layer;(2) dividing the zones and belts and changing the phases to interpret the sub-layers on the basis of the relations between combination of lithological properties and seismic waveform changes;and(3) making high-precision quantitative prediction of reservoirs by means of the depth domain seismic waveform instructions. The seismic waveform characteristics were fully taken into account in the above-stated study. The research results were used for Hartha oil reservoir of Halfaya Oilfield, using the seismic waveform to describe bioclastic beach, interpret restrained development sub-layers, and instruct reservoir inversion. The research results were in line with the requirements for high-precision reservoir prediction at the development stage.
作者
郝晋进
石兰亭
张亚军
洪亮
Hao Jinjin;Shi Lanting;Zhang Yajun;Hong Liang(Northwest Branch of PetroChina Research Institute of Petroleum Exploration&Development,Lanzhou 730020,China)
出处
《石油科技论坛》
2022年第2期104-112,共9页
PETROLEUM SCIENCE AND TECHNOLOGY FORUM
基金
中国石油国际勘探开发有限公司海外技术支持研究项目“2021年中东地区油气地质条件与复杂圈闭评价技术研究及应用”(编号:CNODC-2021-ZC-01-21)。
关键词
地震波形
油田开发
开发小层解释
高精度储层预测
哈法亚油田
seismic waveform
oilfield development
interpretation of development sub-layers
high-precision reservoir prediction
Halfaya Oilfield
作者简介
第一作者:郝晋进,1985年生,2010年毕业于西南石油大学地球探测与信息技术专业,硕士,高级工程师,主要从事储层预测工作。E-mail:haojinjin@petrochina.com.cn。
