张强凹陷上侏罗统成岩作用及储层分布

上株罗统碎屑岩为成熟度低的岩屑少岩，岩石经历了多种成岩变化，降低孔隙度的成岩作用主要为压实作用和方解石、沸石、伊利石及绿泥石的胶结作用，增大孔隙度的成岩作用为溶蚀作用。

Diagenesis and Reservoir Distribution of Upper Jurassic Series in Zhangqiang Hollow ,

The clastic rock of Upper Jurassic Series is a low mature litharenite. Many diageneses have happened in reservoirs. The diageneses which decrease the porosity of reservoirs are compaction, cementation of calcite, zeolite, illite and chlorite. The diagenesis which increases the porosity of reservoirs is corrosion. There are five diagenetic sequences and facieses in reservoirs. The diagenetic facies of chlorite cement has the highest porosity of all the facieses. Diagenetic facieses are correlated with sedimentary facieses, diagenetic periods and maximum burial depth. Since reservoirs are decided by diagenetic facieses, reservoirs can be accurately forecast by them.