CAJ | 학술논문

通过深入分析次生孔隙形成机制，取得以下认识：在封闭-半封闭的系统内，在储层流体入口处附近，溶蚀作用最强烈，孔渗性最高，是次生孔隙发育带的“甜点”区。受溶蚀性流体流动方向的影响，次生孔隙发育带内的渗透率优势方向将与原生孔隙带的优势方向有所不同，溶蚀程度较高时，渗透率优势方向将与流体宏观流动方向一致。
통과심입분석차생공극형성궤제，취득이하인식：재봉폐-반봉폐적계통내，재저층류체입구처부근，용식작용최강렬，공삼성최고，시차생공극발육대적“첨점”구。수용식성류체류동방향적영향，차생공극발육대내적삼투솔우세방향장여원생공극대적우세방향유소불동，용식정도교고시，삼투솔우세방향장여류체굉관류동방향일치。
By in-depth analyzing the mechanism of secondary-pore formation, new views were obtained as follows:in a closed to semi-closed system, the dissolution is the most intense, the porosity and permeability are both the highest near the entrance of reservoir fluid, where is the“sweet spot”of secondary pore development zones;The predominant direction of permeability in secondary pore development zones will be different from that in the primary pore development zones under the influence of flowing direction of dissolution fluid. If the corrosion degree is high enough, the predominant direction of permeability will be in accordance with the macroscopic flowing direction of fluid.