Geologic Features of Abyssal Topography and Drilling Conditions in Block JDZ-2, Nigeria
详细信息
- 责任者：Cheng Xuefeng (Petroleum Exploration & Production Research Institute ; SINOPEC ; Beijing 100083 ; China)
- 刊名：Petroleum Geology & Experiment
- 出版年：2013
- 卷期：35(1)
- 关键词：海底地貌 ; bottom features ; 地质灾害 ; geologic hazards ; 尼日利亚 ; Nigeria
- 页码：p.60-64,71
- 图表：illus., 8 refs.
- 分类号：0200
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
In block JDZ-2 of Nigeria,oceanic 3d seismic data have been applied to obtain the reflection time to seabed.The water depth is calculated,on the basis of which a detailed topography of seabed is drawn.The types and distribution of seabed topography are analyzed.Combined with the drilling results of adjacent blocks,by means of 3d seismic data,the sequences of shallow formation are divided.4 sequences are traced and interpreted on seismic profiles.The underlying geologic disasters to drilling engineering in the shallow formation of the whole block are demonstrated.According to the abovementioned analysis,the fine research of topographic characteristics and potential shallow calamities in the planned area for drilling is completed.The first exploration well surface location is optimized and the countermeasures are established for drilling.The research would be guidable for further explorations.
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