济阳坳陷页岩油勘探实践与认识

doi:10.3969/j.issn.1672-7703.2017.04.001

摘要/Abstract

摘要： 北美在海相页岩油的勘探开发中已获得巨大成功，显示页岩油工业化勘探开发的价值。在中国东部陆相断陷盆地典型代表济阳坳陷页岩油勘探实践中，利用烃源岩综合评价技术揭示了咸化湖泊泥页岩具有生烃早、生烃转化率高的成烃机制，利用泥页岩微观孔隙结构表征技术明确了纹层状岩相具有孔隙度高、孔径大和连通性好的储集性能，利用游离油定量评价技术建立了济阳坳陷不同沉积环境泥页岩有利岩相中游离油差异富集模式。与北美页岩油对比研究认为，济阳坳陷有利岩相发育是页岩油富集的基础，适宜演化程度是页岩油富集的条件，充足游离组分是页岩油富集的关键，良好可压性能是实现有效开发的保证。在此基础上，建立了适合于中国东部陆相断陷盆地咸化湖泊沉积页岩油选区评价标准。

关键词: 济阳坳陷, 页岩油, 咸化湖泊, 游离油, 纹层状岩相

Abstract: Great success has been achieved for the exploration and development of marine shale oil in North America, revealing the significant value of industrial shale oil exploration and development. When shale oil exploration is practically carried out in the Jiyang depression which is the typical representative of continental faulted basin in eastern China, a series of technologies are adopted. It is revealed by the comprehensive source rock evaluation technology that the hydrocarbon generation in mud shale of saline lake is characterized by early hydrocarbon generation and high hydrocarbon-generating transformation ratio. It is confirmed by the mud shale micropore structure characterization technology that laminated lithofacies has the reservoir properties of high porosity, large pore diameter and good connectivity. And by virtue of the quantitative free oil evaluating technology, the differential enrichment mode of free oil in favorable lithofacies of mud shale in different sedimentary environments in the Jiyang depression is established. The shale oil in the Jiyang depression is compared with that in North America. It is indicated that in the Jiyang depression, the development of favorable lithofacies is the base of shale oil enrichment, appropriate evolution degree is the condition of shale oil enrichment, sufficient free composition is the key to shale oil enrichment, and good crushability is the guarantee of effective development. And finally, the shale oil zone selection and evaluation criterion suitable for the saline lake deposit within continental faulted depression in eastern China is prepared.

Key words: Jiyang depression, shale oil, saline lake, free oil, laminated lithofacies

中图分类号:

TE122.9

孙焕泉. 济阳坳陷页岩油勘探实践与认识[J]. 中国石油勘探, 2017, 22(4): 1-14.

Sun Huanquan. Exploration practice and cognitions of shale oil in Jiyang depression[J]. China Petroleum Exploration, 2017, 22(4): 1-14.

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