CAJ | 학술논문

针对西峰油田庄36井区面临单井产量下降和含水上升较快的问题，应用测井资料、岩石薄片、扫描电镜、X衍射、粒度分析、压汞测定等资料，对长8．储层的岩石学特征、物性特征和孔喉特征等进行了深入分析。结果表明：庄36井区长8，储层属低孔-特低孔、特低渗-超低渗储层，岩性主要为细粒岩屑长石砂岩．发育粒间孔和溶蚀孔，孔喉结构类型属小孔隙、微细喉道型，其储层物性主要受沉积作用和成岩作用的共同影响，造成水下分流河道和河口砂坝物性明显好于河道侧翼。根据储层物性和孔隙结构参数，将研究区储层分为4类，即ⅠI类储层为好储层、Ⅱ类储层为较好储层、Ⅲ类储层为较差储层、Ⅳ类储层为差储层。研究区含水上升井主要分布在Ⅲ类和Ⅳ类储层中，Ⅰ类储层的单井产量高且稳产，分类结果符合实际。
침대서봉유전장36정구면림단정산량하강화함수상승교쾌적문제，응용측정자료、암석박편、소묘전경、X연사、립도분석、압홍측정등자료，대장8．저층적암석학특정、물성특정화공후특정등진행료심입분석。결과표명：장36정구장8，저층속저공-특저공、특저삼-초저삼저층，암성주요위세립암설장석사암．발육립간공화용식공，공후결구류형속소공극、미세후도형，기저층물성주요수침적작용화성암작용적공동영향，조성수하분류하도화하구사패물성명현호우하도측익。근거저층물성화공극결구삼수，장연구구저층분위4류，즉ⅠI류저층위호저층、Ⅱ류저층위교호저층、Ⅲ류저층위교차저층、Ⅳ류저층위차저층。연구구함수상승정주요분포재Ⅲ류화Ⅳ류저층중，Ⅰ류저층적단정산량고차은산，분류결과부합실제。
In view of the problems of the oil yield decline and the rapid water saturation in single well of Zhuang 36 well area in Xifeng Oilfield, Ordos Basin, the logging data, rock section, scanning electronic microscope, X diffraction, grain size analysis and mercury penetration were used to analyze the lithology characteristics, physical properties, pore throat of Chang 81 reservoir. The result shows that Chang 81 reservoir belongs to low-ultra low porosity and low-ultra low permeability reservoir; the main sandstone is fine-grained lithic arkose; the reservoir mainly developed intergranular pore and dissolved pores; the pore throat structure is the type of small pore and micro throat. Sedimentation and diagenesis have impacted on the reservoir properties together, which leads that the physical properties of subsea distributary channel and mouth bar were better than that of channel frank. According to the physical properties and pore strueture paramelers, the reservoir in the study area can be divided into four types. The type Ⅰ belongs to the best reservoirs, The type Ⅱ belongs to the good, lhe type Ⅲ belongs to the bad and the lype Ⅳ belongs to the worsl. The water produciug wells mainly distributed in lhe reservoirs of the type Ⅳ and type Ⅲ, and the oil yield in the wells of the Iype l is good and stable.