| 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. | Rocks having original porosity are more uniform in their characteristics than those rocks in which a large part of the porosity is induced 具有原生孔隙度的岩石比次生孔隙度占大部分的岩石在性质上更具有一致性。 |
| 3. | Original porosity is typified by the intergranular porosity of sandstones and the intercrystalline and oolitic porosity of some limestones 原生孔隙度以砂岩粒问孔隙度和某些石灰石的晶体粒间和鲕状孔隙度为代表。 |
| 4. | The diagenesis of the ed3 and es , sandstone has been evoluted to late diagenesis a and b stage , with mainly primary pores and secondary solved pores 油气储层的储集空间以原生孔隙、次生溶解孔隙为主,主要为中孔中渗储层。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | The great number of pores of reef rocks disappeared due to multi - generational cementation in submarine and taphonomic environments . the pores in reef rocks are mainly secondary and the primary pores are almost filled up . the evolution of pores is wholly controlled by diagenesis , all in a word , the histoty of diagenesis is evolution of pores 礁灰岩中的大量孔隙被海底和埋藏成岩环境中多期胶结物充填而丧失,孔隙类型以次生孔隙为特征,原生孔隙基本被填实,孔隙演化完全受成岩作用的控制,成岩作用的发展史就是孔隙的演化史。 |
| 10. | Diagenesis not only can change mineral composition , fabric component , and texture , etc . , but more important it can change the reservoir capability greatly , that is , it can build up , or reduce , or enlarge original pores , and even form a series of diagenetic crack . those secondary pores and cracks are important to improve reservoir capability , especially for carbonate 成岩作用不仅使岩石或沉积物的矿物成分结构组分构造等发生程度不同的变化,更重要的是使原岩的储集性能发生很大的变化,即对原生孔隙或堵塞或残留或扩大,而且还可产生一系列的成岩孔缝次生孔缝,这些次生孔缝对岩石储集性的良化,尤其是对碳酸盐岩是至关重要的。 |