溶解孔隙

岩溶空隙系统虽然在形成后又被充填，但为埋藏溶解孔隙的发育提供了条件。

Although karst pore system was packed again after forming , it provides conditions for the development of burial corrasion pores .

寻找一种既能保持骨架颗粒稳定，又能溶解孔隙中的粘土矿物，改善低渗透砂岩的渗滤性能和油层产能的酸化技术，是大庆低渗透砂岩进行酸化改造的关键。

Finding out an acidization technique that can both keep the skeletal grain stable and solve clay minerals in pores , improving the permeable performance and oil-horizon productivity of low-permeable sandstone is the key of conducting acidization reformation for Daqing low-permeable sandstone .

冷却地层水对碳酸盐矿物的溶解形成孔隙等。这些孔隙的形成机制特别是新提出的大气水的溶解作用对于次生孔隙成因的解释和地下岩石孔隙的预测意义十分重要。

It is important to understand these mechanisms such as dissolution of sediment by the meteoric water especially for interpretation of secondary porosity and prediction of subsurface porosity .

为了溶解堵塞油层孔隙的粘土，恢复和提高油井产量，本文提出了油基土酸酸化工艺及酸化后防止Na2SiF6和CaF2沉淀的工艺方案。

This paper suggests that an oil-based mud acid can be used to dissolve these plugging materials in which additives are added to prevent Na_2SiF_6 and CaF_2 from precipitation .

一种新的储层孔隙成因类型&石英溶解型次生孔隙

A New Type of Secondary Porosity & Quartz Dissolution Porosity

长石的溶解产生次生孔隙对储层的物性具有重大意义。

The secondary porosity generated by the dissolution of the feldspar mean a lot to the reservoir .

有效砂体的形成和保存、泥岩中有机质和粘土矿物的成岩转化及砂岩不稳定组分的溶解是溶蚀孔隙产生的主要原因。

The diagenetic evolution of organic material and clay minerals in mudstones , and dissolution of unstable components in sandstones are the main cause for the formation of the solution pores .

沙三段潜在的烃源岩在中新世馆陶组沉积期，达到生油高峰期，该时期也是有机酸生成的高峰期以及长石和岩屑溶解、次生孔隙发育期。

Potential Es_3 source rock is at the peak period of hydrocarbon generation at the stage of Cenozoic Guantao Formation deposition , which is the peak period of organic acid generation and growing period of feldspar and debris dissolution and secondary pore growth .

地下岩石中碳酸水溶解产生的次生孔隙也是有限的。

The dissolution by carbonic water to form the secondary porosity in subsurface is also limited .

有机酸是研究区储层砂岩溶解作用和次生孔隙形成的主要溶解介质。

Organic acid is in the reservoir sandstone dissolution and the formation of secondary porosity major dissolution media .

溶解作用产生次生孔隙，增大孔隙，并主要发生在长石颗粒和碳酸盐胶结物中；

Dissolution gave secondary porosity and increased porosity , and it occurred mainly in feldspathic grains and carbonate cementation .

有机酸的生成导致了深部3000~5400m处砂岩长石和岩屑发生溶解，导致次生孔隙的发育。

The organic acid generation results in dissolution of sandstone feldspar and debris in 3000 ~ 5400m and growth of secondary pores .

压实作用导致原生孔隙大量损失，不稳定组分的溶解则是改善孔隙结构的主要因素。

The loss of primary porosity is caused by compaction , and pore texture reformation is resulted from the solution of unstable components .

储层以原生剩余粒间孔隙为主，长石及早期碳酸盐胶结物的溶解是形成次生孔隙的主要原因。

The main pore type of the reservoir is primary remained intergranular pore , the dissolution of the feldspar and early carbonate cement results in the secondary pore .

文章还讨论了自生方解石、浊沸石和粘土矿物的分布、成因及压实、胶结和溶解作用对砂岩孔隙的影响。

Origin and distribution of calcite , laumontite and clay , min-erals were also discussed . Compaction , cementation and dissolution are all important factors which can affect the change of sandstone porosity .

方解石的胶结和溶解决定了储层具有良好的孔隙性，溶解形成的次生孔隙是砂岩的主要储集空间。

The calcite cementation and dissolution have the greatest effects on reservoir porosity , and the secondary porosity owing to its dissolution provided the main reservoir porosity .

石英溶解对稠油储层的影响B相：胶结物溶解次生孔隙成岩储集相；

Effect of quartz solution on heavy oil reservoir facies B , in which calcite cements have been greatly dissolved and secondary dissolution pores have been developed ;

从讨论长石溶解的质量平衡问题入手，结合铸体薄片的统计数据和图像分析，全面探讨了长石溶蚀作用对储集层质量的影响，以及长石溶解与砂岩孔隙发育的定量关系。

This paper is to investigate the impacts of plagioclase dissolution on reservoir quality , and to assess the quantitative relationships between plagioclase dissolution and porosity in sandstones by discussing the mass balance , image analysis and quantitative statistics of cast thin sections .