摘要
及地层异常高压的基础上,总结了页岩油气富集高产的条件。有效烃源岩发育决定页岩油气的主力层系;有利岩相发育(纹层状泥质灰岩相)是页岩油气富集高产的基础;断裂裂缝发育是页岩油气富集高产的关键;地层异常高压和埋深是页岩油气富集高产的重要因素。渤南洼陷沙三段下亚段纹层状泥质灰岩相最发育的12下—13上层组是页岩油气最富集的层系,综合各因素的匹配关系,整体考虑、分类分区,有针对性地部署和评价,以落实其产能情况,部署了渤页平1井等3口页岩油气水平井,并已初步实现预期效果。
According to the exploration practices of shale oil-gas in Bonan subsag,on the foundation of systemic analysis of produ cing wells of cumulative oil production and characteristics of source rocks,lithofacies,burial depth,structure and abnormal over pressure,enrichment condition of shale oil-gas is summarized.The development of effective source rocks determines the essential series of strata of shale oil-gas;the development of advantageous lithofacies(laminated argillaceous limestone lithofacies) is the ba sis of enrichment of shale oil-gas;the development of fracture cracks is the key of enrichment of shale oil-gas;formation of abnor mal overpressure and burial depth are important factors accounting for enrichment of shale oil-gas.Lower No.12 to Upper No.13 layers of Es3 in Bonan subsag in which laminated argillaceous limestone lithofacies highly developed are the most enriched series of strata of shale oil-gas,it's necessary to synthesize the matched relation of various factors,arrange and evaluate comprehensively,classify and assort to verify its capability accordingly,it will lay a foundation for large-scale development of shale oil-gas.Three horizontal wells including well BYP1 have been deployed based on the study results,and the preliminary achievement has been ob tained.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2012年第6期6-10,111,共5页
Petroleum Geology and Recovery Efficiency
基金
国家重大科技专项"渤海湾盆地精细勘探关键技术"(2011ZX05006)
