分岩性测井识别油层技术在低对比度油层中的应用——以陆梁油田L9井区J2x1油藏为例

陆梁油田L9井区西山窑组J_2x_1油藏自21世纪初探明,但鉴于对油水层识别不清,导致后期投产井相继失利。为此,利用岩心观察、薄片鉴定、X衍射、岩电分析等资料,结合测井、试油试采动态等数据,对L9井区西山窑组油藏低对比度油层开展原因分析及识别方法研究。研究表明,岩性是影响该区物性、含油性、泥质含量、孔喉特征差异的根本因素。鉴于此,利用分岩性重新拟定了孔隙度、阿尔奇公式参数,并建立了分岩性识别低对比度油层的模型。结果表明分岩性识别低对比度油层解释结论与试油试采符合率达到94%,因此该方法在低对比度油层识别中具有较好的实用价值。     

非水系锂-氧气电池充电过电势过高且呈现不同上升趋势之谜

As one of the most promising candidates to replace the conventional lithium-ion batteries with super-high capacity,non-aqueous Li–O2batteries have attracted increasing attention[1].However,the technology is still in its infant stages and widespread commercialization is hindered by several issues,particularly low round-trip efficiency and