准噶尔盆地腹部莫西庄地区三工河组、八道湾组储层物性特征研究 硕士毕业论文.doc

本科毕业论文 题目：准噶尔盆地腹部莫西庄地区三工河组、八道湾组 储层物性特征研究 姓 名： 学号； 院（系）：资源学院 专业： 石油工程 指导教师： 职称： 副教授 评 阅 人： 职称： 讲 师 2011 年 5 月  本科生论文原创性声明 本人郑重声明：所呈交的是本人在的指导下独立进行研究所取得的研究成果。除了文中特别加以标注引用的内容外，本不包含任何其他个人或集体已经发表或撰写的成果作品。对本文的研究做出重要贡献的个人和集体，均已在文中以明确方式标明。本人完全意识到本声明的法律后果由本人承担。准噶尔盆地位于新疆北部，是我国大型含油气沉积盆地之一。J1b1时期为曲流河三角洲沉积，J1s 21为一至二期三角洲前缘分流河道砂体沉积，J1s22为辫状河三角洲前缘的河道沉积，以成分成熟度低的岩屑砂岩为主砂岩结构成熟度高，胶结物总量低砂岩碎屑组成中普遍含塑性岩屑 研究区砂岩孔隙度随深度逐渐变差，在三工河组上部储层砂岩孔隙度平均为% ，三工河组下部储层平均为%，而八道湾组仅为8.44%, 属特低孔—中孔。 渗透率也随深度而降低，同样三工河八道湾储层三工河组砂岩普遍较粗中粒和粗粒砂岩均为主要砂岩类型，其次为砂砾岩和细砂岩八道湾组粒级较粗，以砂砾岩、中～粗粒砂岩为主以为主，含有一定 Reservoir Characteristics of J1s and J1b Formation, Moxizhuang Region, Junggar Basin Bachelor Candidate: Liu Changyun Supevisor：hu Fangbing ABSTRACT By the use of a large number of rock core’s physical properties data and other geological data, mainly using statistical methods to study petrology characteristics, distribution characteristics of J1s and J1b formation of Moxizhuang region, and physical properties of reservoir and influencing factors. The results show that J1s and J1b sandstone reservoirs in study area in general are characterized by: J1b1 period meandering river delta, J1s 21 for the delta front distributary channel sand body deposition, J1s22 to braided river the river delta front deposition, low compositional maturity in the debris mainly sandstone, sandstone maturity structure of high volume low cement, clastic sandstone composition generally containing plastic debris. The physical properties of the reservoir of J1s formation is better, and J1b formation is worse. The average porosity in J1s sandstone reservoirs is 12.1% (upper part) and 13.6% (lower part), and the average porosity in J1b sandstone reservoirs is 8.44%. The tendency of permeability is similar to the porosity which is getting lower with the depth. The J1s and J1b formation overall in the sandstone reservoir is characterized between conventional reservoirs and compa