CAJ | 학술논문

依据剖面观察、岩心描述、薄片分析和压汞实验等研究方法，对西峰油田M20井区长81储层岩石学特征、储集空间类型和储层物性特征及成岩作用进行了系统的研究。结果表明，研究区长81层主要为细-中粒岩屑长石砂岩，其次为细-中粒长石岩屑砂岩。研究区储层孔隙空间主要有粒间孔、粒内溶孔、晶间孔、微孔、裂缝孔隙。储层物性较差，属于中孔-低渗型的储层。成岩作用是该区储层发育最主要的影响因素，其中成岩过程中压实作用、胶结作用、交代作用和溶解、溶蚀作用对储集空间有较大的影响。
의거부면관찰、암심묘술、박편분석화압홍실험등연구방법，대서봉유전M20정구장81저층암석학특정、저집공간류형화저층물성특정급성암작용진행료계통적연구。결과표명，연구구장81층주요위세-중립암설장석사암，기차위세-중립장석암설사암。연구구저층공극공간주요유립간공、립내용공、정간공、미공、렬봉공극。저층물성교차，속우중공-저삼형적저층。성암작용시해구저층발육최주요적영향인소，기중성암과정중압실작용、효결작용、교대작용화용해、용식작용대저집공간유교대적영향。
Based on the study method of rock sections observation, core analysis, rock slice analysis and mercury penetration exper-iment, petrology characteristics, reservoir space types, reservoir physical property characteristics and diagenesis of Xifeng oilfield M20 borefield were systematically studied. The result shows that the reservoir of Chang-81 reservoir in Xifeng oilfield M20 bore-field are mainly of fine grain-mesograin lithic arkose, and there are slight show of fine grain-mesograin feldspathic litharenite. The reservoir pore space are mainly of intergranular pore, intraparticle dissolved pore, intercrystalline pore, micropore and microfrac-ture pore. The reservoir physical property is not well and characterized by medium porosity and low permeability. The diagenesis are the mainly influential factor of reservoir development, and the reservoir property mainly depends on compaction, cementation, metasomasis and solution during the diagenesis.