徐家围子地区酸性火山岩储层流体识别方法研究

统一气水界面，气水关系较为复杂。储层埋藏深度大,物性差，非均质性强，储层流体多样,含二氧

化碳气的火山岩储层电阻率较低,往往被误判为水层。本文针对以上难点,根据天然气对三孔隙度

测井曲线的影响，并结合取心、录井、试气等资料，应用岩心刻度测井，提出了三孔隙度组合、交会图 和核磁共振法判别等三种流体识别方法,综合判断火山岩储层的流体性质。关键词：火山岩储层；三孔隙度；核磁共振1三孔隙度组合法识别流体性质三孔隙度测井是用来评价油气藏储集性能的重 要测井曲线。中子测井主要反映岩层的含氢指数, _般储层中天然气的含氢指数低于油和水的含氢指

式中：①B.-测井孔隙度背景值,是指岩石孔隙

空间完全含水时的视孔隙度;QCFG -气层指示参 数。气层一般有①恥①D\"大于①B\而◎ M小于①Bao

Gc反映了孔隙度测井视地层孔隙度的绝对累计误

差,是地层孔隙中含气体积的函数,适合于孔隙度较

数，所以当储层中存在天然气时会引起视补偿中子

孔隙度（①皿）减小。天然气的密度和声波传播速度 远小于油和水，所以当地层中含气时可引起视密度

大的无侵或轻度侵入地层。若地层为气层时,G>

0。Gb则是相对累计误差的体现，适合于气显示较

弱的低孔地层或侵入较深的高孔地层。若地层为气

孔隙度（①Q、视声波孔隙度（层时,Gb>lo图1研究区徐深X01井的（3630.0 ~ 3710.0）m井

隙度和视密度孔隙度在水层段时重合，而在气层段

时两孔隙度将有明显差值。气层一般有①“>0>皿、 ◎

叽①皿）/①鶯>1，因此可利用气层在三孔段的流体性质识别处理成果图,三孔隙度交会明显， 指示该层含气性很好,经试气验证为工业气层与解 释结论相符。隙度测井曲线上的不同响应特征来识别气层。考虑到岩性复杂和泥浆滤液侵入的影响,我们 提出了以下四个复合参数（式3-6）作为地层的含气 指标，以放大含气特征显示。2横纵波时差比值法识别流体性质声波测井中,纵波能在固体、液体及气体中传 播,而气体比液体容易压缩，因此气层的纵波时差 （△%）比水层的高;横波只能在固体中传播,受流体

Gc=e su+e 血一2e 皿 Gb=es。•①皿/①寫

（1）（2）影响小，流体性质改变时横波时差（ATs）基本不

变。根据横纵波的这一特性识别流体性质。横纵波时差比:BZ=ATs/ATc敬!阪=（<&B41,N.-l.^）*Gc$（Gb-l）

W当储层含气时：BZ3750.0)m井段的流体性质识别处理成果图,

上部目标层段,纵横波交会明显,指示该层 含气性很好,经试气验证为工业气层O3核磁共振法识别流体性质核磁共振测井仪采集的原始数据只包 含了地层中氢核的信息，核磁共振测井基本

不受岩石骨架影响，摆脱了资料评价过程中

地层矿物模型的困扰。但当储层含气时，受 气体的含氢量较少及气体极化时间较短等

因素影响，核磁孔隙度减小;储层含气又使 密度孔隙度增大。另外，体积密度和核磁共 振测井其测量范围接近，因此可以利用体积

密度测井孔隙度和核磁共振测井孔隙度进 行气、水层的识别。基于上述特性识别流体

性质。图3是研究区徐深X03井的流体性质识 别处理成果图,核磁共振判别法核磁计算孔 隙度与密度计算孔隙度在低电阻率段有明 显幅度差,且录井气测比值较大，综合分析

判别该层为气层。实际试气结果表明，

(3723.0-3735.0)m井段自然产能日产气

226234m3，与测井识别结果一致。4综合指数法识别流体性质上述方法虽然应用效果都较好，但为了 充分应用每种测井信息,对上述解释参数进

行归一化处理后加权构建了综合指数

(ZHCS)方法对流体性质进行综合判别。ZHCS=A1*VHZB+A2*VKXD+A3*VHCVHZB：横纵波时差比值识别法归一化

后交会值；VKXD:三孔隙度法归一化后交会值;VHC:核磁共振法归一化后交会值;

A1、A2、A3为系数。综合指数值越大,表示储层含气性越 好。由图中可以看出,综合指数显示该段储

层有两段含气显示较好的层段。经试气验 证,该层压后自喷日产气325213方，与工业

气层的解释结论相符。第如卷第5期王春阳:徐家围子地区酸性火山岩储层流体识别方法研究27取心、录井、试气等资料，采用三孔隙度组 合方法,并结合交会图及测井新技术,综

合判断火山岩储层的流体性质，确定了火

山岩储层有效厚度划分标准。应用逐步

判别法对研究区59 口井进行流体识别，经

69个层试气验证，流体识别准确率达

.1%,该成果已应用于深层天然气各级

图5徐深X05井测井综合解释成果图储量提交、开发方案编制及单井测井综合

评价中。参考文献：[1] 李宁、付有升等，大庆深层流纹岩全直径岩心实验数据分

5测井综合解释效果分析根据火山岩储层测井综合解释流程，应用三孔 隙度法、核磁共振法、横纵波比值法得到综合指数判

析，测井技术,2005,06.[2] 匡立春，克拉玛依油田5 - 8区二叠系佳木河组火成岩岩

别储层含气性,确定含气储层、水层和干层;然后应 性识别，石油与天然气地质,1990,11(2),193-201.[3] 张国杰，阿尔善地区火成岩解释方法探讨测井资料的地质

用基于微观孔隙结构的交会图，识别气水同层和气 层。应用本次研究所建模型标准在徐家围子地区

应用，石油工业出版社，1991.[4] 邱家釀、陶奎元、赵俊磊等，火山岩M，北京:地质出版社，

60余口探、评井及开发井进行了数字处理解释，经

岩心、测试资料验证，效果较好。1996.[5] 潘保芝、闫桂京、吴海波，对应分析确定松辽盆地北部深层

6结论根据天然气对三孔隙度测井曲线的影响，结合火成岩岩性，大庆石油地质与开发,2003,22(1) ：7-9,[6] 黄隆基等，火山岩测井评价的地质和地球物理基础，测井

技术,1997,21(5):341 ~344.•最新测井专利•(外国专利)专利名称:IMPROVEMENTS IN OR RELATING TO DOWNHOLE MEASUREMENTS（中文译名:有关井下测量数据的改进）专利申请号:W02018GB50331申请 0 : 2018.02.06公开号:W02018142165A1公开 0:2018.08.09申请人:READ CASED HOLE LTD;A caliper finger for use as part of a multi-finger caliper logging tool has a body formed substantially of a first material and a finger tip formed substantially of a second material which has greater mechanical durability than the

first material. The first material and second material are fused direcdy together at a joint between the first material and the second material. The finger tip may comprise a plurality of successively-fused layers of the second material,

which can then be machined at its outer surface after fusion of the plurality of layers. The second material may be a composite material of tungsten carbide combined with a base material in which the tungsten carbide is embedded and securely bonded to the finger.WORLD WELL LOGGING TECHNOLOGY【Bimonthly] Vol. 40 No.5 2019 Total 233ABSTRACTSl.MeXpress through pipe logging system and its used in complex wells

........................................................................................................................................ Tong Mao song Cao Yun xin Gu Peng cheng Sun Xu guangAbstract: Through—pipe logging technology is a new technology developed in recent years. The tool conveying process is controllable. When the logging is completed, the downhole tools can be retrieved. The technology can effectively solve the logging problems of long horizontal wells and complex wells. MeXpressTM through-pipe logging system is mainly composed of surface equipment, downhole logging tools, conventional downhole short sections and special tools for memory logging. The system was used in over 150 wells in Daqing, Jilin and Changqing oilfields. The required geological data can be obtained safely and efficiently, and meet the users * requirements. Field applications show that the system has the advantages of wide application range, high logging safety, high success rate and high timeliness.Keywords: Through—pipe logging system; Memory logging; Field operation process; Field application2.Study on the fluid identification method of acidic volcanic rock reservoir in Xujia Waizi area

...................................................................................................................................................................................................................Wang ChunyangAbstract: The volcanic rock reservoirs in Xujia Waizi area are mainly distributed in the formation of the city under the Cretaceous system of the Mesozoic Dynasty, which is a rock—based tectonic gas reservoir, without a unified gas—water interface, and the gas—water relationship is more complex. Reservoir buried depth is large, poor materiality, non—homogeneous, reservoir fluid diversity, carbon dioxide—containing volcanic rock reservoir resistivity is low, often misjudged as a water layer. In this paper, according to the above difficulties, according to the impact of natural gas on the three-porosity logging curve, and combined with the data such as heart extraction, logging, test gas, the application of rock heart scale logging, proposed three-porosity combination, rendezvous map and nuclear magnetic resonance method to determine the three fluid identification methods, comprehensive judgment of the fluid properties of volcanic rock reservoir.Key word: Volcanic rock reservoir; Three porosity; Nuclear magnetic resonance3 .The Research Progress and Prospects of Imaging While Drilling Technology

...................................................................................................................... Zhang Haibo DouXiurongWangZhiguoPanXingming Shi HongjiangAbstract： With the increasing scale of exploration and development of complex oil and gas reservoirs, oil and gas drilling is increasingly demanding for precise geosteering and reservoir evaluation. Geosterring technology of imaging while drilling applied to oil and gas drilling can significantly improve reservoir drilling rate and drilling efficiency, which is one of the important technologies for the efficient development of complex oil and gas reservoirs and is also a hot spot for major oil service companies to compete for research. The three major foreign oil service companies have a series of products for imaging while drilling. This paper researches the current state of foreign imaging while drilling instruments technology, and summarizes the future development trend of the technology, to provide some reference for domestic research and development of this technology.Key words: Geosterring; Imaging;LWD Instrument;4.Research of a Method for calculating capillary pressure based on petrophysical experiment and nuclear magnetic resonance logging ................................................................................................................................................. Wang ziliang Chen muying Liu xingjun Jin sujuanAbstract: For areas with complex water salinity in the formation, the previous model using oil logging to calculate oil saturation was not able to meet the interpretation and evaluation requirements due to the inaccurate selection of mineralization. The article introduced a mercury intrusion test and nuclear magnetic resonance measurement. The well data is used to calculate the capillary pressure curve under reservoir conditions, and the relationship between the J function and the water saturation is used to calculate the original oil saturation of the reservoir, and a model for calculating the original oil saturation without relying on the mineralization degree is obtained.5.Influence of Reservoir Heterogeneity on Enrichment Law of Low Permeability Gas Reservoirs:Taking the P2h8 of Su X Block of Sulige Gas Field in Ordos Basin as an Example.............................................................................................Guan Yan Tian Guoqing Xue Xiaomin Li Yong Zhang Xianyang Zhu Yushuang Abstract: On the basis of core experiment and statistics and analysis of logging data,heterogeneity characteristics of three small layers of P2h8 of upper Paleozoic, He 8 upper,He 8 under l,He 8 under 2,in Su X block of Sulige Gasfield are researched respectively.Combined with the test data in the study area, it is found that the well locations with good test mining are mostly distributed in areas with high heterogeneity.Influenced by the heterogeneity of P2h8, the gas reservoirs in the study area are often isolated and lenticularly distributed in the plane. The effective traps formed by the difference in lithology and physical properties are important reasons for gas reservoir enrichment.Keywords: reservoir heterogeneity;gas reservoir enrichment;Shihezi group &Sulige Gasfield6.The research and application in interpretation and evaluation of horizontal wells with pump logging system

........................................................................................................................................................................................................ Bai Sha ZhaoWeifengAbstract: The Pump—out logging system is a kind of storage type and a new wireless logging technology which is conveyed by drill stem. It can be completed in horizontal,high deviated wells and various complex wells condition.The article introduces the logging methods of horizontal Wells in reservoir evaluation in detail, and meet the demand of reservoir evaluation and project evaluation.Key words: Pump-out Logging Horizontal Wells Reservoir Estimation