基于BP神经网络的深水近海烃源岩评价

IF 1.2 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Geofluids Pub Date : 2023-09-09 DOI:10.1155/2023/4803616

Jizhong Wu, Ying Shi, Qianqian Yang, Yanan Wang

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引用次数: 0

摘要

由于深水近海地区钻井资料缺乏，地震资料质量差，常规方法无法有效预测总有机碳(TOC)含量。本文采用BP神经网络方法对目标层上覆地层进行TOC预测，增加了研究区TOC信息。然后，利用目标层上覆地层的最高TOC值来选择最敏感的地震属性。最后利用敏感地震属性对无井或少井烃源岩进行评价。建立了一套深水区无井和少井条件下TOC与地震属性相结合的TOC预测技术流程。应用实例表明，该技术流程预测TOC的可靠性，对近海深水烃源岩评价具有一定的参考意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Source Rock Evaluation of Hydrocarbons in Deep-Water Offshore Areas Based on a BP Neural Network

Due to the lack of drilling data and poor quality of seismic data in deep-water offshore areas, conventional methods cannot effectively predict the total organic carbon (TOC) content. In this paper, the BP neural network method is used to predict the TOC of the strata overlying the target layer, which adds to the TOC information in the study area. Then, the highest TOC value of the strata overlying the target layer is used to select the most sensitive seismic attributes. Finally, the sensitive seismic attributes are used to evaluate the source rocks with no or few wells. A set of TOC prediction technology flows is established for TOC combined with seismic attributes under the condition of no wells and few wells in deep-water areas. The application example shows the reliability of TOC prediction by this technical process, and the study has a certain reference significance for the evaluation of hydrocarbon source rocks in offshore deep water.

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来源期刊

Geofluids 地学-地球化学与地球物理

CiteScore

2.80

自引率

17.60%

发文量

835

期刊介绍： Geofluids is a peer-reviewed, Open Access journal that provides a forum for original research and reviews relating to the role of fluids in mineralogical, chemical, and structural evolution of the Earth’s crust. Its explicit aim is to disseminate ideas across the range of sub-disciplines in which Geofluids research is carried out. To this end, authors are encouraged to stress the transdisciplinary relevance and international ramifications of their research. Authors are also encouraged to make their work as accessible as possible to readers from other sub-disciplines. Geofluids emphasizes chemical, microbial, and physical aspects of subsurface fluids throughout the Earth’s crust. Geofluids spans studies of groundwater, terrestrial or submarine geothermal fluids, basinal brines, petroleum, metamorphic waters or magmatic fluids.