CAJ | 학술논문

利用测井资料识别火山岩储层流体性质一直是困扰测井评价的难题.针对火山岩储层岩石成分、结构和气水关系复杂,孔隙空间分布极不均匀,储层具有很强的非均质性以及低孔、低渗的特点,采用核磁-密度测井综合法、横波(纵波)-合成横波(合成纵波)重叠法、压缩系数-泊松比重叠法及压力梯度法识别松南气田流体性质,取得了较好的效果.研究表明,由于各种测井方法在不同的孔隙-裂缝系统中的响应机制不同,天然气识别的效果存在明显的差异,总结了各类储层的气层识别方法.
이용측정자료식별화산암저층류체성질일직시곤우측정평개적난제.침대화산암저층암석성분、결구화기수관계복잡,공극공간분포겁불균균,저층구유흔강적비균질성이급저공、저삼적특점,채용핵자-밀도측정종합법、횡파(종파)-합성횡파(합성종파)중첩법、압축계수-박송비중첩법급압력제도법식별송남기전류체성질,취득료교호적효과.연구표명,유우각충측정방법재불동적공극-렬봉계통중적향응궤제불동,천연기식별적효과존재명현적차이,총결료각류저층적기층식별방법.
The complexity of volcanic reservoir rock component,structure,and gas-water relationship,multiplicity and highly uneven random distribution of pore space result in the strong heterogeneity,low porosity and low permeability of the reservoir,so gas identification is always a challenge to logging reservoir evaluation.In this paper,NMR-density logging method,synthetic S-wave logging overlapping,compression coefficient-Poisson ratio overlapping and pressure gradient method are adopted to identify gas layers in igneous reservoir,and good effects have been achieved in the identification of the fluid property in Songnan gas field.Research shows that the response mechanism of the logging methods in different pore-fracture system is different,resulting in significant difference in result of natural gas identification.For different reservoir characteristics,different gas layer identifying methods are used,and better identification result can be achieved in igneous reservoir.