碎屑岩储集层成岩作用研究进展与热点问题讨论

Discussion on research advances and hot issues in diagenesis of clastic-rock reservoirs

近10年来,碎屑岩储集层成岩作用研究发展迅速,总结国内外成岩作用研究进展、前沿研究热点和关键问题,具有重要的学术探索意义。在归纳前人研究成果与认识基础上,结合国内外典型研究实例,讨论了近年来碎屑岩储集层成岩作用研究进展以及未来研究热点或发展趋势。认为成岩作用研究在物源对砂岩类型及其成岩演化路径的制约,流体-岩石相互作用及其产物、热动力学与超压背景对成岩作用与孔隙发育的影响,油气充注成藏过程与储集层低渗-致密化时序等研究方面取得了长足进展,正在向将微观尺度成岩作用研究与盆地流体、盆地动力学与热动力学过程等宏观大尺度背景相结合的由源到汇的沉积作用过程、埋藏、烃类成熟与油气充注成藏、构造演化与流体活动、流体-岩石相互作用的成岩作用系统及其时空动态及定量演变机制研究方向发展。本文旨在抛砖引玉,与业内相关领域的专家学者和同行一起,在成岩作用研究精细程度、研究深度与广度、最先进的分析测试技术与方法之应用、以及多学科交叉融合方面共同努力,以期推动中国碎屑岩储集层成岩作用研究的进程。

The research on diagenesis of clastic-rock reservoir is developing rapidly in recent ten years. Thus,it is of great significance in academic and scientific exploration to summarize the domestic and international research progress and the key issues of frontier research on diagenesis. The research progress,main achievement and recognition in diagenesis of clastic-rock reservoirs in recent years is discussed,and the hot issues or developing trend of diagenesis in the future is probed in this paper,on the basis of summarizing the previous research results and understanding,combined with the typical research examples at home and abroad. It is believed that great progress was obtained in provenance and parent rock constraints on sandstone types and their diagenetic evolution pathways,impact of fluid-rock interaction and its product on diagenesis,influence of thermodynamics and overpressure background on diagenesis and pore development,the timing sequence between hydrocarbon accumulation and filling process and the sandstone reservoir becoming low permeability-densification. At present,diagenetic research is developing in direction of the spatial and temporal dynamics and quantitative evolution mechanistic and diagenetic system controlled by the basin fluid dynamics,thermal dynamic processes,combining the micro-scale diagenesis research with the basin macroscopic background such as sedimentation from the source to the basin,burial history,hydrocarbon maturity and charge into reservoirs,tectonic evolution and fluid activity,and fluid and rock interaction. The aim of this paper is to induce the academic peers and experts in diagenesis and the related research fields to come forward with their valuable contributions, to cooperate and work together and joint efforts on the research exquisite,profundity and breadth of diagenesis,and application of the most advanced analytical measurement techniques and methods,as well as integration and infiltration of multidisciplinary,in order to promote the course of the clastic-rock reservoir diagenetic research in China.