| 扇三角洲砾砾岩储层沉积特征及与储层物性的关系—以罗家油田沙四段砂砾岩体为例 |
| |
| 引用本文： | 曹辉兰,张善文,等.扇三角洲砾砾岩储层沉积特征及与储层物性的关系—以罗家油田沙四段砂砾岩体为例[J].高校地质学报,2001,7(2):222-229. |
| |
| 作者姓名： | 曹辉兰 张善文 |
| |
| 作者单位： | 1. 南京大学地球科学系，江苏南京 210093; 2. 石油大学， 山东 东营 257062; 3. 胜利石油管理局，山东东营 257061 |
| |
| 基金项目： | 胜利石油管理局重点科技攻关项目 |
| |
| 摘 要： | 从岩心和各类薄片资料入手，以沉积物和储层地质学为基础，结合各类分析资料，对山东沾化凹陷罗家油田沙四段砂砾岩体储层的沉积特征进行了研究。前人所提出的水下冲积扇和近岸水下扇沉积的认识，忽视了扇形沉积体的水上部分，因而改为扇三角洲沉积更为适合。扇三角洲沉积可进一步细分为扇三角洲平原、扇三角洲前缘和前扇三角洲三个沉积相及五个微相，其中水下分流河道沉积微相的储层最为发育。详细阐述了砂砾岩体的岩性、沉积微相等沉积因素对储层物性的影响，其中粒度对砂砾岩储层特性与对砂岩储层物性的影响明显不同。
|
| 关 键 词： | 砂砾岩体 扇三角洲 储层物性 山东 沉积特征 沉积微相 |
| 文章编号： | 1006-7493(2001)02-222-08 |
| 收稿时间： | 2001-06-20 |
| 修稿时间： | 2000年10月18 |
Depositional
Characteristics of Sandstone and Conglomerate Reservoirs of Fan Delta and Relationship to
Reservoirs' Physical Properties |
| |
| CAO Hui-lan.Depositional
Characteristics of Sandstone and Conglomerate Reservoirs of Fan Delta and Relationship to
Reservoirs'''' Physical Properties[J].Geological Journal of China Universities,2001,7(2):222-229. |
| |
| Authors: | CAO Hui-lan |
| |
| Institution: | 1. Nanjing University, State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing 210093, China; 2. Petroleum University, Shandong Dongying 257062, China; 3. Shenli Petroleum Administration, Shandong Dongying 257061, China |
| |
| Abstract: | Based on the sedimentology and reservoir geology, combined with drilling, logging and analytical data, depositional characteristics of sandstone and conglomerate bodies' reservoirs for the fourth member of the Shahejie Formation in the Luojia oilfield are studied in detail. The rusults show unacceptability of some previous cognition. As to depositional environment of fan deposits, the conception of fan delta is better than the nearshore subaqueous fan and the subaqueous alluvial fan. According to the characteristics of sandstone and conglomerate bodies, the fan-deltas can be subdivided into three subfacies and five microfacies. It is elaborated that physical properties of reservoirs are effected by lithological properties, sedimentary microfacies and other factors. The porosity and permeability of reservoirs of sandstone and conglomerate bodies is improved by dissolution of feldspar and carbonate rock-fragments. However, it would be decreased awfully with increase of fine matrix and carbonate contents. A style of parabola is shown in the relationship of the mean grain size with the porosity and permeability of the reservoirs which is greatly different from sandstone reservoirs. The oil-bearing properties of the packsand and the pebbled gritstone with parallel bedding and homogeneous bedding is better than glutinite with wavy bedding and graded bedding. Among all microfacies classified, the best reservoir is developed in subaqueous distributary channels. |
| |
| Keywords: | sandstone and conglomerate bodies fan delta depositional characteristics physical properties of reservoirs the fourth member of Shahejie Formation |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《高校地质学报》浏览原始摘要信息 |
| 点击此处可从《高校地质学报》下载免费的PDF全文 |
