石油化工高等学校学报Issue(4)：35-39,64,6.DOI:10.3969/j.issn.1006-396X.2015.04.008
YD 油田延长组长4+5、长6砂岩储层成岩特征
Diagenesis Characteristics of Sandstone Reservoir in Chang 4+5 and Chang 6 of YD Oilfield
摘要
Abstract
Based on the research of sandstone slice samples and its petrological characteristics in Chang 4 + 5,Chang 6 sandstone reservoir of YD oilfield,diagenesis and the influence degree of diagenesis on porosity and permeability of reservoir were studied.Diagenetic evolution sequence in Chang 4+5,Chang 6 sandstone reservoir was established and diagenetica stage, pore evolution of the study area were devided.The results indicated that sandstone diagenesis this area was strong and abundant.Mechanical compaction,pressure solution,cementation and metasomatism were the key factors which led to loss of the primary pores in Yanchang Group sandstone reservoir.Also,the above factorsresulted in flow ability lost of acidic ground fluids,which made dissolution become poor and reservoir become particularly tight.According to the classification discipline of clastics diagenesis phase,the sandstone of Yanchang Group experienced sorts of diagenesis,where its intensity was significant and was now in the early period of late diagenetic (A).Sandstone pore had experienced many evolution processes,which were the initial pore slashed.A small amount of residual intergranular pores was retained and all kinds of pores gradually developed into corrosion pores.Diagenesis in upper Chang 4+5 was more favorable for hydrocarbon transfusion and reservoir.关键词
YD 油田/延长组/成岩作用/成岩演化序列/成岩阶段/孔隙演化Key words
YD Oilfield/Yanchaug group/Diagenesis/Diagenetic evolution sequence/Diagenetic stage/Pore evolution分类
能源科技引用本文复制引用
刘子豪,严伟尧,王野..YD 油田延长组长4+5、长6砂岩储层成岩特征[J].石油化工高等学校学报,2015,(4):35-39,64,6.基金项目
国家自然科学基金项目(90210022)。 （90210022）
