地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->过刊浏览->天勘2020.1


盒8、山1 段致密气藏地层水赋存机理及主控因素 ——以苏里格某区块为例
Occurrence mechanism of formation water in Shihezi 8 and Shanxi 1 tight gas reservoirs and its main control factors: An example from one block in Sulige gasfield
刘会会1,2 崔越华1,2 夏守春1,2 刘雪玲1,2 费世祥1,2 王准备1,2
点击:219次 下载:18次
DOI:
作者单位:1. 中国石油长庆油田公司勘探开发研究院 2. 低渗透油气田勘探开发国家工程实验室
中文关键字:早、中二叠世 致密砂岩气藏 地层水 产出状态 赋存样式 控制因素 甜点区预测 开发技术对策
英文关键字:Middle and Lower Permian; Tight sandstone reservoir; Formation water; Occurrence; Occurrence pattern; influencing factor; Prediction of sweetspot belt; Technological countermeasure on development
中文摘要:   针对苏里格某区致密含水气藏储量基数大、动用程度低、气井普遍产水等开发难点,综合利用地质、动态资料等一体化分析,深入研究了地层水赋存机理及其主控因素。结果表明:①中二叠统盒8、下二叠统山1 段气藏地层水具有中等偏高矿化度特征,属于封闭环境下的局部滞留水;②地层水微观产状主要为束缚水、毛细管水、自由水,宏观赋存样式主要为构造低部位滞留水、透镜状滞留水、孤立透镜体水,明确了苏里格某区不同类型储层内部地层水赋存及其开发特征;③毛细管力和天然气向上浮力控制了地层水的产状,导致气水垂向分异不明显、气水两相混储,生烃强度、成岩作用、储层非均质性、构造特征控制了地层水的赋存样式及空间分布。结论认为:①构造低部位滞留水主要分布在局部构造低点的高渗河道砂体发育区;②透镜状滞留水主要分布在构造低洼平缓的河道充填相致密厚层砂体内部;③孤立透镜体水主要分布在河道间孤立砂体发育区。
英文摘要:    in most water-bearing tight gas reservoirs in one block of Sulige gasfield, there are several difficulties during their development,such as large reserves base, low production degree, and most gas wells with water production. So, based on an analysis on geological and dynamic data, the occurrence mechanism of formation water and its main control factors were summed up. Results show that (1) the formation water in these gas reservoirs of both Middle Permian Shihezi 8 Member and Lower Permian Shanxi 1 Member
is featured by medium to high salinity, and belongs to a kind of local retained water in closed environment; (2) microscopically, its occurrences are chiefly bound water, capillary water, and free water, whereas macroscopically, they are mainly structural low-position retained water, lenticular retained water, and isolated lenticular water. And the occurrences and development characteristics of the formation water in different types of reservoirs in the case block of Sulige are clarified; (3) its occurrences are under the control of
capillary force and upward buoyancy of natural gas, which may lead to indistinct gas-water vertical differentiation and gas-water dual-phase mixed preservation. The occurrence pattern and spatial distribution of the formation water are controlled by hydrocarbon-generating intensity, diagenesis, reservoir heterogeneity, and structural characteristics. In conclusion, the structural low-position retained water is basically distributed at some high-permeability sandbody development areas of local structural low position, the lenticular
retained water inside the structurally low and gentle, tight and thick sandbody of channel fill facies, and the isolated lenticular water in the inter-channel isolated sandbody development areas, individually.
读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2020天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第3011588名访问者