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中南大学学报(自然科学版)

Journal of Central South University

第47卷    第4期    总第260期    2016年4月

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文章编号:1672-7207(2016)04-1305-07
叠前反演在南海北部白云凹陷深水区域储层预测中的应用
汪瑞良1,颜承志1,胡琏1,张卫卫1,明治良2,刘波2

(1. 中海石油(中国)有限公司 深圳分公司,广东 广州,510240;
2. 赛吉纪地球科技(北京)有限公司,北京,100027
)

摘 要: 研究应用岩石物理分析、正演和叠前同步反演的综合方法,提高地震振幅预测储层的准确性。该方法首先分析目标区地层压实趋势及岩石物理特征,制定目标区弹性与岩性、物性之间的关系;再对CRP道集地震数据进行质量控制处理并分析其特征,利用叠前同时反演进行储层预测研究;最后结合区域盆地沉积特点,采用岩相流体概率分析的方法将地震弹性信息转化为易于理解和分析的岩性、物性等地质信息。经实际钻井检验,该技术提高了对白云深水区优质储层预测的精度,可以解决复杂地质条件下优质砂岩储层的识别难题,降低深水勘探的风险。

 

关键字: 南海;深水;岩石物理;叠前同时反演

Application of prestack inversion in reservoir prediction in deep water area in baiyun sag of northern South China sea
WANG Ruiliang1, YAN Chengzhi1, HU Lian1, ZHANG Weiwei1, MING Zhiliang2, LIU Bo2

1. Shenzhen Branch of CNOOC Ltd, Shenzhen, Guangzhou 510240, China;
2. Compagnie Generale deGeophsique, Beijing 100027, China

Abstract:Application of petrophysical analysis and integrated approach of forward and pre-stack simultaneous inversion were studied to improve the prediction reservoir accuracy of seismic amplitude. First, by analyzing the compaction trends and rock-physics based on log data in target area, the relationship between elasticity, lithology phase and reservoir properties were figured out. Second, the reservoir prediction was applied by using pre-stack inversion after QC the CRP gather data and analyzing their characteristics. Finally, the seismic elasticity was converted into geological information by using fluid and lithology face probability analysis (FFP) under the guidance of local sedimentation phases. It has been proved by drilling practice that this technique can improve the precision in predicting high quality reservoir with very complex geology background in Baiyun deep water area, and reduce the risk of deep water area exploration.

 

Key words: the South China sea; deepwater; rockphysics; prestack inversion

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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