CAJ | 학술논문

在柴达木盆地西部南区广泛发育砂岩储集层,这些砂岩储集层的成岩现象十分丰富,其中石英次生加大和方解石、白云石、硬石膏的交代现象常见且规律性明显,对储集层物性的影响较大.研究了石英次生加大方式及化学胶结物交代作用的强度及其对储集层物性的影响.研究表明,乌南-绿草滩地区深层石英次生加大发育,储集层物性差:方解石、白云石和硬石膏的交代作用达到强一极强程度时储集层物性明显变差.
재시체목분지서부남구엄범발육사암저집층,저사사암저집층적성암현상십분봉부,기중석영차생가대화방해석、백운석、경석고적교대현상상견차규률성명현,대저집층물성적영향교대.연구료석영차생가대방식급화학효결물교대작용적강도급기대저집층물성적영향.연구표명,오남-록초탄지구심층석영차생가대발육,저집층물성차:방해석、백운석화경석고적교대작용체도강일겁강정도시저집층물성명현변차.
The sandstone reservoirs are broadly found in south area in western Qaidam basin,in which existing diagenetic phenomena such as the secondary outgrowth of quartz and the replacement of calcite, dolomite and anhydrite are of great effects on the reservoir petrophysical property. This paper presents the effects of the secondary outgrowth pattern and the replacement intensity on the reservoir petrophysical property. The study shows that the deep strata in Wunan-Lveaotan area are of developed quartz secondary outgrowth, where the reservoir property is poor; while the replacement of calcite, dolomite and anhydrite reaches strong or extremely strong, the property becomes poor obviously.