摘要:
陆域冻土区天然气水合物勘探进展迅速,木里地区数口井已发现含天然气水合物储层,但目前国内尚无匹配的测井评价系统软件,影响了木里地区水合物勘探进度.为此,基于木里地区地质、工程和数据条件,利用VB语言开发了木里水合物测井评价系统.该系统的主要技术和方法有:①测井数据预处理技术;②测井响应特征与岩性分析;③岩性与储层识别技术;④储层参数计算与评价.结合这些技术和方法,设计了系统的结构和功能,采用分层式框架结构,从下至上共3层:基础数据层、中间支持层、应用层;实现了系统和技术的主要功能,建立了一套完整的链式处理模块和技术流程.现场应用表明,该系统满足勘探现场水合物测井处理解释的精度和效率要求,且结构简洁稳定,功能完善.实现了对木里水合物测井的高效处理与解释,填补了相关领域的空白,支持了木里地区天然气水合物的勘探与开发.
Abstract:
The exploration of natural gas hydrate in the permafrost area is developed quickly.Several wells containing gas hydrate reser voirs have been found in Muli area.Nevertheless,there is no software log evaluation system in China,which affects the exploration progress of gas hydrate in Muli area.Therefore,based on the geolog,engineering and data sets,the authors developed the logging evaluation system of natural gas hydrate in Muli area by using VB language.The main technology and methods of the system include(1) the pretreatment technology of logging data,(2) the analysis of logging response and lithologic characteristics,(3) the hierarchical and lithologic identification technology,and (4) the calculation and evaluation of reservoir parameters.Combined with the technology and methods,the structure and function of the system are designed.The layered structure is selected,and it contains 3 layers,i.e.basic data layer,middle support layer and application layer.The main functions of the system and technology are realized,and a set of chain process modular and technology flow charts is established.The field application results show that the system can satisfy the exploration processing precision and efficiency of hydrate logging interpretation requirements.The structure of the system is stable,and the function is completed.It achieves the target of the efficient processing and interpretation of gas hydrate logs in Muli area and fills the gaps in related fields.The system could support the exploration and development of natural gas hydrate in Muli area.
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