提高DND气田储层预测精度和井位部署成功率的对策
|
摘要
DND气田上古生界储层具有厚度薄、横向非均质性强和煤层强反射干扰的特点,精确的地震储层预测十分困难,导致依据地震储层预测结果部署井位存在极大的风险。通过对DND气田储层发育地质特征和地震储层预测结果的综合分析,提出了提高DND气田储层预测精度和井位部署成功率的对策:充分发挥地质指路作用,以地质认识指导和约束地震储层预测;重视正演模拟和井点解剖寻找储层的地震反射结构;注重敏感属性的应用;充分认识反演储层预测中井约束的局限性,注意反演横向分辨率低的陷阱．力口强钻井跟踪研究及时调整储层预测结果和井位部署。
The upper Palaeozoic reservoir of DND gas field is characterized by thin reservoir and strong transverse-anisotropy as well as reflection intervention from coal, which cause it difficult to predict reservoir accurately with seismic methods. Wells deployment depending on seismic reservoir prediction was at great risk. Through analyzing the geologic features and the seismic reservoir prediction, the author put forward some strategies for improving reservoir prediction and success ratio of well deployment, including guiding and constraining seismic reservoir prediction by geology, identifying seismic reflection configuration assisted by forward modeling and well information analysis, adopting sensitive attribute(s), avoiding the limitations and pitfalls in reservoir prediction by inversion, as well as keeping track of drill pace and accordingly adjusting reservoir prediction and well deployment.
The upper Palaeozoic reservoir of DND gas field is characterized by thin reservoir and strong transverse-anisotropy as well as reflection intervention from coal, which cause it difficult to predict reservoir accurately with seismic methods. Wells deployment depending on seismic reservoir prediction was at great risk. Through analyzing the geologic features and the seismic reservoir prediction, the author put forward some strategies for improving reservoir prediction and success ratio of well deployment, including guiding and constraining seismic reservoir prediction by geology, identifying seismic reflection configuration assisted by forward modeling and well information analysis, adopting sensitive attribute(s), avoiding the limitations and pitfalls in reservoir prediction by inversion, as well as keeping track of drill pace and accordingly adjusting reservoir prediction and well deployment.
引文
1 侯洪斌,牟泽辉,朱宏权．鄂尔多斯盆地北部上古生界天 然气成藏条件与勘探方向[M]．北京:石油工业出版社, 2004．4-8
2杨俊杰．鄂尔多斯盆地构造演化与油气分布规律[M]． 北京:石油工业出版社,2002．33-38
3云美厚,丁伟,王新红．地震水平分辨率研究[J]．勘探地 球物理进展,2005,28(2):103-107
4刘友年,史海英,蔡先华．岩性圈闭识别技术在松南长岭 凹陷腰英台地区的应用[J]．石油物探,2005,44(6): 588-592
5 王永刚,乐友喜,曹丹平等．河道砂体含油性判别方法 [J]．石油地球物理勘探,2005,40(4):459-462
6凌云,孙德胜,高军等．基于三维地震数据的准层序组内 沉积体的解释研究[J]．石油物探,2005,44(6):569- 577
7鲍祥生,尹成,赵伟等．储层预测的地震属性优选技术研 究[J]．石油物探．2006,45(1):28-32
8印兴耀,周静毅．地震属性优化方法综述[J]．石油地球 物理勘探,2005,40(4):482-489
2杨俊杰．鄂尔多斯盆地构造演化与油气分布规律[M]． 北京:石油工业出版社,2002．33-38
3云美厚,丁伟,王新红．地震水平分辨率研究[J]．勘探地 球物理进展,2005,28(2):103-107
4刘友年,史海英,蔡先华．岩性圈闭识别技术在松南长岭 凹陷腰英台地区的应用[J]．石油物探,2005,44(6): 588-592
5 王永刚,乐友喜,曹丹平等．河道砂体含油性判别方法 [J]．石油地球物理勘探,2005,40(4):459-462
6凌云,孙德胜,高军等．基于三维地震数据的准层序组内 沉积体的解释研究[J]．石油物探,2005,44(6):569- 577
7鲍祥生,尹成,赵伟等．储层预测的地震属性优选技术研 究[J]．石油物探．2006,45(1):28-32
8印兴耀,周静毅．地震属性优化方法综述[J]．石油地球 物理勘探,2005,40(4):482-489
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心