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白云石化作用是形成优质储层的基础。The dolomitization is the base of forming high quality reservoirs.

进行了白云石化分区分带研究，为下步勘探部署指明了方向。Distribution research of dolomitization is made, and next exploration target is pointed out.

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近年来，关于白云石化作用及白云岩问题，取得了更深层次的发展。Nowadays, the progress of research about dolomitization and the issue of dolostone has been acquired.

矿化表现为“硅化、白云石化、黄铁矿化”组合。The gold mineralization is represented by the association of silicification, dolomitization and pyritization.

认为不同类型的白云岩形成于不同的沉积环境，其白云石化模式也不相同。It is concluded that different dolomites formed in different environments have different models of dolomitization.

米级旋回层序揭示了高频海平面变化引起的海水—淡水和盐水—淡水混合水白云石化。The meter scale cyclic sequences reveal the mixing water dolomitization resulted from frequent fluctuation of sea level.

白云石化作用，以早成岩阶段混合水白云石化作用为主，埋藏白云石化作用次之。The dolomitization is dominated by mixed water dolomitization in the early diagenetic stage, followed by burial dolomitization.

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原生岩石为亮晶鲕粒石灰岩和泥晶鲕粒石灰岩，白云石化作用使其岩石结构大多遭受破坏。The primary rocks were sparry oolitic limestone and micrite oolitic limestone, but dolomitization destroyed the original sedimentary textures.

深层与超深层优质碳酸盐岩储层的形成主要依赖于白云石化作用以及白云岩的岩溶改造作用。The generation of high-quality carbonates reservoirs in the deep and ultra-deep formations mainly depends on dolomitization and dolomite karst.

本文着重讨论礁体围岩为生屑灰岩的埋藏压实流体白云岩化模式，简述礁控白云岩储集特征及其成因。This paper mainly dis-cusses the mechanism of distribution of reef dolomite and the favorable thermodynamic and kinetic conditions for burial dolomitization.

白云岩化作用与沉积环境密切相关，白云岩的分布对沉积微相展布具有一定的指示意义。Dolomitization is closely related to the sedimentary environment, and to some degree, the distribution of dolomite may be regarded as an indicator for microfacies.

而溶蚀和破裂扩大作用是提高储层质量的关键。Burial dolomitization is primarily beneficial to the reservior development, and the solution and fracturing are important for improving the quality of the reservoir.

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成岩相分为混合水云化-溶蚀-破裂相、溶蚀-胶结相和胶结-压实-压溶相。Diagenesis is divided into admixed seawater dolomitization fluid corrosion-fracturing phase, fluid corrosion-cementing phase and cementing-compaction-compaction solution phase.

由此认为，川东北飞仙关组鲕滩相储层储集性能的改善主要依赖于白云石化和深埋成岩阶段的非选择性溶蚀作用。Therefore, the high quality oolitic beach reservoirs in the Feixianguan Formation are mainly resulted from dolomitization and non-selective dissolution in deep burial diagenetic stage.

成岩作用是储层形成的关键，最有利于储层形成的成岩作用是混合水白云石化和埋藏溶解作用。Diagenesis is the key to good reservoir formation and evolution. The most favorable diagenesis for reservoir formation and evolution is the burial dissolution and the mixed dolomitization.

白云岩成因的研究目前还处于假说阶段，主要包括蒸发、渗透回流、海水、混合水以及埋藏白云岩化作用五种模式。The research on dolomite genesis is in postulation stage at present, which includes five models of vaporization, infiltration and circumfluence, sea water, mixing water and buried dolomitization.