摘要
砂泥岩地层为主的含油气盆地中,泥岩成岩过程中析出的无机和有机组分伴随压实流体进入砂岩孔隙后,可使砂岩中的不稳定组分溶解产生次生孔隙,并形成新的化学沉淀和某些自生矿物,还可使早期的胶结物发生成岩变化而形成新的组分。因此,地层中泥岩的发育程度、粘土矿物、有机质的类型和丰度以及成岩变化特征都将对砂岩的胶结作用产生十分明显的影响。
The cementation of sandstone in a hydrocarbonbearing basin is severely affected by the diagenetic change of clay, minerals and organic materials. Fluid entering the sandstone can dissolve some unstable components to form secondary porosity, while those accompanied organic and inorganic components derived nfrom diagenesis can form new chemical precipitations or new authegenic minerals. Moreover, cementing materials in the early stage can form new components due to diagenesis. Thus, the development of claystone in a rock formation, type and abundance of organic matters and clay minerals and the characteristics of diagenesis, all these will affect significantly the cementation of sandstones.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1992年第4期20-30,共11页
Acta Petrolei Sinica
