商河58区块火山岩及其储集性分析
发布时间：2019-05-15 23:38
【摘要】：山东省惠民凹陷商河58区块沙一段属于浅湖相沉积盆地,发育喷发相火山岩夹层。火山岩中油气分布规律一直倍受地学界关注。研究区中火山岩层岩性变化较大,产状多变,对火山岩储集性能认识不一。本论文对该非均质性火山岩储集体进行了工作,搞清了其岩性发育及内部结构变化特征,分析了火山岩储集性特征及油气富集规律,提出火山岩储层勘探开发建议。针对惠民凹陷商河58区块沙一段致密、孔渗值较低、孔隙连通性较差的低产量火山岩储集层,论文在野外观察3口钻,并采集岩心标本32件的基础上,鉴别出其岩性主要为火山角砾岩、角砾凝灰岩、生物碎屑灰岩,搞清了火山岩与生物灰岩内部矿物成分、各个矿物之间的关系、岩石形成过程等,并结合钻孔录井资料分析,厘定了四个火山岩岩相,划分了3期喷发活动,并且利用角砾粒径大小不同的特点,细分出了火山岩中不同的韵律层。运用显微CT扫描技术、针对不同储层的火山岩和灰岩进行了无损分层扫描,测定了储集层岩性的孔隙及喉管特点,建立了孔隙和喉管变化三维模式图,计算出岩石孔隙度、渗透率数据,将不同期次的火山岩和生物灰岩进行对比,确定了火山岩储集层裂缝表征特征和孔隙连通性有利部位,预测出油气在火山岩储层中赋存的主力层位置,为火山岩储层的开发提供了有力依据。
[Abstract]:The first member of Shanhe 58 block in Huimin sag, Shandong Province, belongs to shallow lacustrine sedimentary basin, and eruptive volcanic rock interlayer is developed. The distribution of oil and gas in volcanic rocks has been paid more and more attention by geologists. In the study area, the lithology of volcanic strata changes greatly and the occurrence is changeable, so the reservoir performance of volcanic rocks is different. In this paper, the heterogeneous volcanic rock reservoir is worked out, its lithology development and internal structure change characteristics are clarified, the volcanic reservoir characteristics and oil and gas enrichment law are analyzed, and some suggestions for exploration and development of volcanic reservoir are put forward. Aiming at the low yield volcanic rock reservoir with dense sand first member, low porosity and permeability value and poor pore connectivity in Shanghe 58 block of Huimin sag, this paper observes 3 drills in the field and collects 32 core specimens. It is identified that the lithology is mainly volcanic breccia, breccia tuff and bioclastic limestone, and the mineral composition inside volcanic rock and biological limestone, the relationship between each mineral, rock formation process and so on are clarified, and the drilling and logging data are analyzed. Four volcanic rock facies are determined, three stages of eruption activity are divided, and different rhythmic layers in volcanic rocks are subdivided by using the characteristics of different particle size of breccia. The nondestructive delamination scanning of volcanic rocks and limestone in different reservoirs is carried out by using micro-CT scanning technology. the pore and throat characteristics of reservoir lithology are measured, the three-dimensional model diagram of pore and throat variation is established, and the rock porosity is calculated. According to the permeability data, the fracture characterization characteristics and pore connectivity of volcanic reservoir are determined by comparing different stages of volcanic rock and biogenic limestone, and the location of principal layer of oil and gas in volcanic reservoir is predicted. It provides a powerful basis for the development of volcanic reservoir.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13
[Abstract]:The first member of Shanhe 58 block in Huimin sag, Shandong Province, belongs to shallow lacustrine sedimentary basin, and eruptive volcanic rock interlayer is developed. The distribution of oil and gas in volcanic rocks has been paid more and more attention by geologists. In the study area, the lithology of volcanic strata changes greatly and the occurrence is changeable, so the reservoir performance of volcanic rocks is different. In this paper, the heterogeneous volcanic rock reservoir is worked out, its lithology development and internal structure change characteristics are clarified, the volcanic reservoir characteristics and oil and gas enrichment law are analyzed, and some suggestions for exploration and development of volcanic reservoir are put forward. Aiming at the low yield volcanic rock reservoir with dense sand first member, low porosity and permeability value and poor pore connectivity in Shanghe 58 block of Huimin sag, this paper observes 3 drills in the field and collects 32 core specimens. It is identified that the lithology is mainly volcanic breccia, breccia tuff and bioclastic limestone, and the mineral composition inside volcanic rock and biological limestone, the relationship between each mineral, rock formation process and so on are clarified, and the drilling and logging data are analyzed. Four volcanic rock facies are determined, three stages of eruption activity are divided, and different rhythmic layers in volcanic rocks are subdivided by using the characteristics of different particle size of breccia. The nondestructive delamination scanning of volcanic rocks and limestone in different reservoirs is carried out by using micro-CT scanning technology. the pore and throat characteristics of reservoir lithology are measured, the three-dimensional model diagram of pore and throat variation is established, and the rock porosity is calculated. According to the permeability data, the fracture characterization characteristics and pore connectivity of volcanic reservoir are determined by comparing different stages of volcanic rock and biogenic limestone, and the location of principal layer of oil and gas in volcanic reservoir is predicted. It provides a powerful basis for the development of volcanic reservoir.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13
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