Progress in zeolite origin and its control for reservoir development
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TE122.2

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    Abstract:

    Zeolite is one of the essential diagenetic minerals in volcanic and feldspar-rich clastic rocks, which is of great significance in the development of clastic rock reservoirs. There have been many studies on the distribution characteristics, genesis, and reservoir control mechanisms of zeolite minerals in major basins of China, but a unified understanding has not yet been formed. According to the previous research, combined with the latest drilling data in the hinterland of Junggar Basin, this paper systematically summarized and analyzed the distribution of zeolite minerals in major basins in China and studied their genesis and reservoir control mechanisms. The distribution of zeolite minerals is mainly controlled by components such as volcanic debris and feldspar, strong hydrodynamic conditions, the composition of diagenetic fluids, temperatures and pressures, and other comprehensive conditions. They are commonly found in various waterway systems in deltas. The genesis of zeolites is complex, with volcanic material alteration,plagioclase albitization, and hydrothermalism being the leading causes. Currently, the former two are the most common in various basins. Zeolite minerals have a positive effect on the development of clastic rock reservoirs. Zeolites effectively improve the reservoir's anti-compaction ability with high hardness in the early stages, and zeolite minerals remove intergranular water and release pore space during the diagenetic period. In addition, zeolite minerals are prone to transformations under the influence of temperature,and the density difference between minerals before and after transformation increases pore space. The pore enlargement resulting from the acidic fluid dissolution is also one of the most important storage control mechanisms of zeolites.

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WANG Jiyuan, WANG Bin, QIU Qi, LI Zhenming, SUN Zhongliang, MA Longjie. Progress in zeolite origin and its control for reservoir development[J]. Petroleum Geology and Recovery Efficiency,2025,32(1):29~39

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History
  • Received:November 02,2023
  • Revised:September 02,2024
  • Adopted:
  • Online: February 13,2025
  • Published: