凝析气与轻质油的气测识别方法及应用

发布时间：2018-01-09 11:23

本文关键词：凝析气与轻质油的气测识别方法及应用　出处：《特种油气藏》2017年05期 　论文类型：期刊论文

【摘要】：渤海油田P7构造中深层轻质油气流富集,原油密度小,气油比高,流体普遍处于气液共存的交错相态,加之部分井眼条件差,测井资料不完善,造成油、气判别难度大。对已钻井的气测资料进行统计分析发现,凝析气和轻质油在岩屑录井时均可见荧光显示,气测录井组分均齐全,特征极其相似,常用图版法很难区分。3H曲线呈现一定的规律性,但与传统模型的出入较大,对3H解释模型进行优化,制订解释标准。提出气体组分星型图版,该图版选取5个特征参数对流体相进行分析,不同的流体相特征差异十分明显。2种方法相结合,对P7构造凝析气与轻质油进行气测识别,分析储层内部流体相态分界面,应用效果很好。该研究促进了P7构造油气分布格局和储量的落实,在其他钻遇轻质油气流的区块具有较大的应用推广价值。
[Abstract]:Deep light oil in Bohai oilfield in P7 construction gas enrichment, the density of crude oil, gas oil ratio, fluid generally in the gas-liquid coexistence phase of the cross section of the wellbore, coupled with poor conditions, well logging data is not perfect, resulting in oil, gas identification difficult. Statistical analysis was carried out to find the drilled gas data, condensate gas and light oil in logging are visible fluorescent display, gas logging components are complete, similar characteristics, common plate method is difficult to distinguish between the.3H curve showed certain regularity, but with the traditional model of the discrepancy, the 3H interpretation model to optimize the formulation of the interpretation criteria. Put forward the gas component star the chart chart, select 5 feature parameters on fluid phase analysis, the combination of different fluid phase is characterized by.2 method, the P7 structure of condensate gas and light oil gas identification, analysis of reservoir fluid phase interface The application is very good. This research promotes the implementation of P7 structure and distribution of oil and gas distribution, and has great application and popularization value in other areas where light oil and gas flow are encountered.

【作者单位】：中法渤海地质服务有限公司;中海石油(中国)有限公司天津分公司;
【基金】：国家科技重大专项“渤海海域勘探新领域及关键技术研究”(2016ZX05024-003)
【分类号】：P618.13
【正文快照】： 0引言随着渤海油田勘探程度的不断提高,中深层探井越来越多,诸多区块相继发现轻质油气流。此类流体在纵向上多呈气液交错分布,尤其对于密度小于0.81 g/cm3的轻质油,其气油比极高,具有很强的挥发性,在单一储层内常处于油气共存的状态,反映在测井曲线上既具有油层显示的特征,又

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