吐哈盆地鄯善弧形构造带碎屑岩的成岩作用

Diagenesis of the clastic rocks in the arcuate structural zone of the Turpan Hami Basin, Xinjiang

吐哈盆地鄯善弧形构造带三间房组储集层的成岩作用类型主要为压实作用、胶结作用和溶蚀作用。成岩作用改变了砂岩储集层的孔隙结构。压实作用和胶结作用降低了砂岩的原生孔隙度，溶解作用产生的次生孔隙成为主要的汕气储集空间。

Three types of diagenesis have been distinguished for the hydrocarbon reservoirs of the Sanjianfang Formation in the arcuate structural zone of the Turpan Hami Basin, Xinjiang. They are compression, cementation and solution. The diagenesis may result in the variations in pore structures of sandstone reservoirs; the compression and cementation may lead to the decrease in valid primary porosity of sandstones, and the secondary porosity generated by solution may serve as main oil storage spaces.