Simulation of Array Laterolog Response of Fracture in Fractured Reservoir
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摘要: 为了研究裂缝性储层裂缝的阵列侧向测井响应, 采用裂缝组平板裂缝模型, 利用三维有限元方法, 进行不同裂缝参数条件下的高分辨率阵列侧向测井响应数值模拟.表明阵列侧向视电导率和裂缝孔隙度与裂缝流体电导率成线性关系; 低角度裂缝的阵列侧向深浅视电阻率呈现负差异特征, 高角度缝呈现正差异; 相同裂缝孔隙度下, 裂缝密度增加可使得阵列侧向视电阻率增加, 当裂缝密度足够大时, 测井响应特征基本不随裂缝密度发生变化; 交叉缝的测井响应与具有相同角度的平行裂缝组差异明显, 且不同倾角组合的交叉缝的测井响应之间差异明显.阵列侧向测井对裂缝有较强的敏感性, 根据其测井视电阻率大小可以评价裂缝孔隙度, 根据深浅视电阻率的幅度差异可以研究裂缝的产状, 这些为将阵列侧向测井用于裂缝性储层裂缝评价有指导意义.Abstract: To understand the response of array laterolog to fracture in the fractured reservoir, based on the plane model of parallel fractures with equal space, the three-dimensional finite element method is used to simulate the responses of the high-definition array laterolog in fractured formation with different fracture parameters.The results show that conductivitites of array laterolog are linearly related to the porosity of fracture and the conductivity of pore fluid.A negative separation between the deep and shallow resistivity appears in the low-angle fractured formation, the positive appears in high-angle conditions.Apparent resistivity increases gradually with fracture density increasing under the same porosity of fracture conditions.If fracture density is large enough, the log response will not vary with essentially fracture density.Log response of crossing fracture is apparently different from that of the parallel fracture group with the same angle, and log response of crossing fracture is different under the different dip grouping system.Accordingly the array laterolog is sensitive to the fracture and its apparent resistivity can be used to determine the fracture porosity and the separation between the deep and shallow apparent resistivity can be used to study the fracture attitude.The above researches have contributions to the application of array laterolog in the fractured reservoir evaluation.
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Key words:
- fracture reservoir /
- fracture group /
- fracture dip /
- fracture aperture /
- porosity of fracture /
- fracture fluid /
- array laterolog
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图 3 单一裂缝的阵列侧向测井响应与张开度的关系
Fig. 3. Array laterolog response of single fracture with different fracture aperture
图 4 单一裂缝的阵列侧向响应与裂缝倾角的关系
Fig. 4. Array laterolog response of single fracture with different fracture angle
图 5 裂缝组的测井响应与裂縫角度的关系
Fig. 5. Array laterolog response of fracture group with different fracture angles
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Chen, Q. H., Liu, C. Y., Wang, S. X., et al., 2002. Study oncarbonate fracture-cavity system—Status and prospects. Oil & Gas Geology, 23 (2): 196-202 (in Chinese with English abstract). Chen, Y. H., Chew, W. C., Zhang, G. J., 1998. A novel arraylaterolog method. The Log Analyst, 39 (5): 23-32. Deng, S. G., Wang, X. C., Fan, Y. R., 2006. Response of duallaterolog to fractures in fractured carbonate formation and its interpretation. Earth Science—Journal of China University of Geosciences, 31 (6): 846-850 (in Chinese with English abstract). Fu, X. F., Su, Y. P., Lü, Y. F., et al., 2007. Fractal characteristic and geological meaning of fault and fracture. Earth Science—Journal of China University of Geosciences, 32 (2): 227-234 (in Chinese with English ab-stract). Griffiths, R., Smits, J. W., Faivre, O., et al., 1999. Bettersaturation fromnew array laterolog. In: Society of Professional Well Log Analysts, Houston, TX, UnitedStates. Transactions of the SPWLA Annual Logging Symposium, 40: 1-14. Hakvoort, R. G., Fabris, A., Frenkel, M. A., et al., 1998. Field measurements and inversion results of the high-definition lateral log. In: Society of Professional WellLog Analysts, Houston, TX, United States. Transactions of the SPWLA Annual Logging Symposium, 39: 1-12. Jiang, L. Z., Gu, J. Y., Guo, B. C., 2004. Characteristics andmechanismof low permeability clastic reservoir in Chinese petroliferous basin. Acta Sedimentologica Sinica, 22 (1): 13-18 (in Chinese with English abstract). Li, S. J., Xiao, C. W., Wang, H. M., et al., 1996. Mathematical model of dual laterolog response to fracture and quantitative interpretation of fracture porosity. ActaGeophysica Sinica, 39 (6): 845-852 (in Chinese withEnglish abstract). Liu, Z. H., Zhang, X., 2005. Multi-parameter inversion of array laterolog responses. Journal of Xi'an Shiyou University (Natural Science Edition), 20 (1): 30-33 (in Chinese with English abstract). Luo, L., Hu, P. Y., Zhou, Z. Y., 2001. Log identification forfracture in carbonate. Acta Petrolei Sinica, 22 (3): 32-35 (in Chinese with English abstract). Ouyang, J., Li, S. J., 2001. Aninterpretation method of identifying and evaluating fractured sand oil reservoirs indeep zone in Bohai Gulf using dual laterolog responses. Well Logging Technology, 25 (4): 282-286 (in Chi-nese with English abstract). Rabinowitz, P. D., Zhou, Z. Q., 2007. Array processing—Anew method to detect and correct. Chinese Journal of Oceanology and Limnology, 25 (1): 51-58. doi: 10.1007/s00343-007-0051-7 Sibbit, A., Faivre, O., 1985. The dual laterolog response infractured rocks. In: Society of Professional Well LogAnalysts, Houston, TX, United States. Transactions of the SPWLA Annual Logging Symposium, 26 (1): 1-34. Smits, J. W., Dubourg, I., Luling, M. G., et al., 1998. Im-proved resistivity interpretation utilizing a new arraylaterolog tool and associated inversion processing. SPE49328, New Orleans, Louisiana, 831-843. Wu, J., Xie, W. W., Xie, X. C., et al., 2008. Forward response analysis of array lateral logging tool. Journal of Xi'an Shiyou University (Natural Science Edition), 23 (1): 73-76, 80 (in Chinese with English abstract). Zenf, L. B., Li, Y. G., Wang, Z. G., et al., 2007. Type andsequence of fractures in the second member of Xujiahe Formation at the south of western Sichuan depression. Earth Science—Journal of China University of Geosciences, 32 (2): 194-200 (in Chinese with English ab-stract). Zhang, G. J., 1984. Electrolog (I). Oil Industry Press, Beijing, 1-38 (in Chinese). 陈清华, 刘池阳, 王书香, 等, 2002. 碳酸盐岩缝洞系统研究现状与展望. 石油与天然气地质, 23 (2): 196-202. doi: 10.3321/j.issn:0253-9985.2002.02.022 邓少贵, 王晓畅, 范宜仁, 2006. 裂缝性碳酸盐岩裂缝的双侧向测井响应特征及解释方法. 地球科学——中国地质大学学报, 31 (6): 846-850. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200606013.htm 付晓飞, 苏玉平, 吕延防, 等, 2007. 断裂和裂缝的分形特征. 地球科学——中国地质大学学报, 32 (2): 227-234. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200702010.htm 蒋凌志, 顾家裕, 郭彬程, 2004. 中国含油气盆地碎屑岩低渗透储层的特征及形成机理. 沉积学报, 22 (1): 13-18. doi: 10.3969/j.issn.1000-0550.2004.01.003 李善军, 肖承文, 汪涵明, 等, 1996. 裂缝的双侧向测井响应的数学模型及裂缝孔隙度的定量解释. 地球物理学报, 39 (6): 845-852. doi: 10.3321/j.issn:0001-5733.1996.06.014 刘振华, 张霞, 2005. 阵列侧向测井响应的多参数反演. 西安石油大学学报(自然科学版), 20 (1): 30-33. doi: 10.3969/j.issn.1673-064X.2005.01.007 罗利, 胡培毅, 周政英, 2001. 碳酸盐岩裂缝测井识别方法. 石油学报, 22 (3): 32-35. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB200103010.htm 欧阳健, 李善军, 2001. 双侧向测井识别与评价渤海湾深层裂缝性砂岩油层的解释方法. 测井技术, 25 (4): 282-286. doi: 10.3969/j.issn.1004-1338.2001.04.009 仵杰, 谢尉尉, 解茜草, 等, 2008. 阵列侧向测井仪器的正演响应分析. 西安石油大学学报(自然科学版), 23 (1): 73-76, 80. doi: 10.3969/j.issn.1673-064X.2008.01.016 曾联波, 李跃纲, 王正国, 等, 2007. 川西南部须二段低渗透砂岩储层裂缝类型及其形成序列. 地球科学——中国地质大学学报, 32 (2): 194-200. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200702005.htm 张庚骥, 1984. 电法测井(上册). 北京: 石油工业出版社, 1-38. -
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