CAJ | 학술논문

以东营凹陷北部陡坡带中段胜坨地区Es4为例，探讨了近岸水下扇砂砾岩有效储层发育的控制因素和分布规律。通过井震结合来研究该区砂砾岩扇体扇根宽度与基岩面坡角和储层埋深之间的线性关系，发现随着埋深的增加和基岩面坡角变陡，扇根变宽；并根据砂砾岩扇体扇中和扇根地震反射特征的差异，在平面上确定储层根部的发育边界，结果表明沙四段砂砾岩扇体扇根宽度范围在200~750 m。根据该区的岩性电性解释模板及孔隙度、渗透率正逆累积曲线来确定该区有效储层的岩性和电性标准，最终通过多重因素刻画砂砾岩扇体有效储层的发育区和发育规模，发现该区有效储层的分布主要受控于砂砾岩扇体的埋深和沉积相带，有效储层主要发育在近岸水下扇扇中亚相。
이동영요함북부두파대중단성타지구Es4위례，탐토료근안수하선사력암유효저층발육적공제인소화분포규률。통과정진결합래연구해구사력암선체선근관도여기암면파각화저층매심지간적선성관계，발현수착매심적증가화기암면파각변두，선근변관；병근거사력암선체선중화선근지진반사특정적차이，재평면상학정저층근부적발육변계，결과표명사사단사력암선체선근관도범위재200~750 m。근거해구적암성전성해석모판급공극도、삼투솔정역루적곡선래학정해구유효저층적암성화전성표준，최종통과다중인소각화사력암선체유효저층적발육구화발육규모，발현해구유효저층적분포주요수공우사력암선체적매심화침적상대，유효저층주요발육재근안수하선선중아상。
Based on Es4 of Shengtuo area in the middle steep slope of Northern Dongying depression, control factors and distribu?tion rule of the effective reservoir of near shore gravel fans were discussed. By the combination of well-log and seismic data, the lin?ear relation of fan root width with bedrock slope angle and buried depth was researched to find that the fan root became wider with the increasing of the buried depth and the steepening of the bedrock slope angle. Meanwhile, according to the difference of the seis?mic reflection of mid-fan and fan root, the development edge of fan root was found in plane. The result showed that the fan root width was about 200 ~ 750 m. On the basis of the lithological electrical explain template and porosity, permeability forward and re?verse cumulative curve, the lithology and the electrical standards in this area were defined. Finally, description of the development area and the development scale of the effective reservoir of the gravel fan by multi factors helped to find that the effective reservoir distribution of this area mainly depended on the buried depth and the sedimentary facies of the gravel fan, and the effective reser?voir mainly developed in middle near shore under water fan.