| 1. | The pore spaces are completely dominated by primary porosity and pores , vogs and fractures with secondary origination
孔隙空间主要是原生孔隙及由次生原因形成的孔隙和裂缝。 |
| 2. | The formation mechanism of the pore of diagenetic dolostone includes : 1 ) the primary porosity is essential condition for the formation of dolostone reservoir
成岩白云岩孔隙的形成机制有: l )岩石的原生孔隙度是成岩白云岩储层形成的必要条件。 |
| 3. | The main control factors of carbonate of preservation for information of seawater are : a ) the components of original minerals ; b ) the primary porosity of rock ; c ) the content of terrigenous elastics of carbonate rocks
有如下3个主要控制因素： a )原始矿物组成； b )岩石的原生孔隙度； c )碳酸盐岩中陆源碎屑矿物的含量。 |
| 4. | 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
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。 |
| 5. | A lot of diagenetic dolostones have remainder granulation structure , and the native rock of it may be various intraclast limestone . this type of rock usually has high primary porosity . the high primary porosity is the important base of forming the pore of dolostone reservoir
一部分成岩白云岩仍具有残余粒屑结构，其原岩可能主要为各种类型的粒屑灰岩，这类岩石通常具有较高的初始孔隙度(原生孔隙度) ，这是以后形成成岩白云岩储层孔隙的重要基础条件。 |
| 6. | The pattern of diagenetic and porosity evolution are established . the primary porosity of the reservoir rocks was 35 % , which was reduced by 21 . 7 % by compaction and pressure solution and 8 . 2 % by cementation . the secondary pores were produced by organic acids " dissolution during organic matter maturing stage , resulting an increase of porosity by 5 %
预测本区砂岩原始孔隙度为35 ，经机械压实和化学压溶作用孔隙度损失了21 . 7 ，后经自生矿物的胶结作用，孔隙度损失了8 . 2 ，当进入有机质成熟阶段，有机酸的溶解作用产生次生孔隙，使孔隙度增加5 ，现今保存的平均孔隙度为10 . 1 。 |
