CAJ | 학술논문

塔河石炭系油藏为披覆于奥陶系顶面古地貌隆起上的低幅度构造圈闭和岩性圈闭所控制，储层电性高低除了受物性和含液性影响之外，还明显受岩性变化的影响。低阻油层最大的特点是与邻近水层电阻率值接近，难于识别。本文在岩心分析、薄片观察、地层水分析及压汞资料的基础上分析了塔河2区石炭系油层低阻成因。研究发现高地层水矿化度及高束缚水饱和度是造成其油层低阻的主要原因。结合本区实际情况，建立适合该区的测井参数解释模型。根据测井参数解释结果、测试及录井资料，利用交汇图法，建立了油水层识别的标准，应用于实际，取得了较好的效果。
탑하석탄계유장위피복우오도계정면고지모륭기상적저폭도구조권폐화암성권폐소공제，저층전성고저제료수물성화함액성영향지외，환명현수암성변화적영향。저조유층최대적특점시여린근수층전조솔치접근，난우식별。본문재암심분석、박편관찰、지층수분석급압홍자료적기출상분석료탑하2구석탄계유층저조성인。연구발현고지층수광화도급고속박수포화도시조성기유층저조적주요원인。결합본구실제정황，건립괄합해구적측정삼수해석모형。근거측정삼수해석결과、측시급록정자료，이용교회도법，건립료유수층식별적표준，응용우실제，취득료교호적효과。
Tahe 2 carboniferous reservoir is controlled by structural trap and lithologic trap with low amplitude which cover on the Ordovician paleogeomorphology uplift. The value of reservoir electrical property is obviously controlled by the impact of lithological change in addition to physical property and fluid property. The main characteristic of low resistivity reservoir is close to the resistivity value of adjacent water layer, being difficult to identify. The genesis of oil reservoir is analyzed in carboniferous of Tahe 2 Oilfield based on the data analysis of core, formation water and slice observation. The study found that high reservoir water salinity, thin interbedded mudstone, clay mineral adsorption conductivity and reservoir lithologic trap with low amplitude cause the low resistance reservoir and high salinity formation water is the main reason. Combined with the actual situation, we established suitable logging parameters interpretation models in the region. According to logging parameter interpretation results, testing and logging data, we established a new oil and water layer identification standard using the intersection graph method,which was applied in practical, and obtained good results.