Lithologic Reservoirs ›› 2017, Vol. 29 ›› Issue (1): 110-115.doi: 10.3969/j.issn.1673-8926.2017.01.014

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Image processing method of LWD azimuthal gamma data

TANG Haiquan   

  1. Research Institute of Drilling Technology, Sinopec Shengli Oilfield Service Corporation, Dongying 257017, Shandong, China
  • Received:2016-08-25 Revised:2016-10-10 Online:2017-01-21 Published:2017-01-21

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Abstract: Using LWD(Logging While Drilling)azimuthal gamma curves and gamma images can more accurately determine the location of reservoir boundaries,and can guidance geosteering construction of horizontal wells better. This paper first introduced the structure of two sectors and basic principles of LWD azimuthal gamma measurement instrument. During drilling,the gamma tool is responsed by rotary speed,and generally can only measure up to 16 azimuthal sectors data. The circle borehole measuring range is limited,and the real-time data uploading to surface,due to the influence of downhole signal transmission rate,uploading up to no more than eight sectors. At the same time,the data correlation between different sectors is relatively high,and mutual influence is relatively large. In use of the periodic cubic spline interpolation process,a continuous variation gamma data along the borehole was obtained. Through applying RGB and HSI color space conversion method and specific chromatography static and dynamic color mapping method,the gamma image is more in line with the characteristics of the geological image. Through LWD data processing,better gamma images can be obtained,and the observation and identification of stratigraphic characteristics are clearer. It directly shows the wellbore formation lithology changes in different directions,and reduces the risk penetrated reservoir.

Key words: shale gas, adsorption, diffusion, nanopore, graphite slit-pores； molecular simulation

CLC Number: 

  • TE242
[1] 郝以岭,杜志强. OnTrak 随钻测井资料在冀东油田地质导向 中的应用.测井技术,2009,33(2):148-152. HAO Y L,DU Z Q. Application of geosteering service based on OnTrak MWD/LWD platform in Jidong Oilfield. Well Logging Technology,2009,33(2):148-152.
[2] 吴振华,陈颖杰. 近钻头方位伽马射线成像工具在超薄油藏 中的地质导向新技术.国外测井技术,2011(2):65-68. WU Z H,CHEN Y J. A new geosteering technology of azimuthal gamma imaging tool near bit in ultra thin reservoirs. World Well Logging Technology,2011(2):65-68.
[3] 赖富强. 电成像测井处理及解释方法研究. 东营:中国石油大 学(华东),2011. LAI F Q. Micro-resistivity image logging processing and interpretation methods research. Dongying:China University of Petroleum, 2011.
[4] 张向林,刘新茹. 裸眼井测井新技术进展. 岩性油气藏,2008, 20(2):91-96. ZHANG X L,LIU X R. New development of logging techniques in open hole. Lithologic Reservoirs,2008,20(2):91-96.
[5] 肖红兵,马哲,李闪. 随钻自然伽马井下测量仪器的研制. 石 油仪器,2002,16(2):15-17. XIAO H B,MA Z,LI S. Development of MWD downhole gamma ray measuring instruments. Petroleum Instruments, 2002,16(2):15-17.
[6] 张守谦,顾纯学,曹广华. 成像测井技术及应用. 北京:石油工 业出版社,1997. ZHANG S Q,GU C X,CAO G H. Imaging logging technology and application. Beijing:Petroleum Industry Press,1997.
[7] 孙卫锋,张吉,马志欣,等. 苏里格气田水平井随钻地质导向 技术及应用.岩性油气藏,2009,21(3):76-81. SUN W F,ZHANG J,MA Z X,et al. Geosteering technology of horizontal well and its application in Sulige Gas Field. Lithologic Reservoirs,2009,21(3):76-81.
[8] 乔德新. 成像测井资料定量计算方法研究及软件开发. 北京: 中国地质大学(北京),2005. QIAO D X. Study of quantitative computation method and development of software for image logging data. Beijing:China University of Geosciences(Beijing),2005.
[9] 闫建平,首祥云,邵在平,等. 成像测井图像的动态增强及 Morphing 方法.测井技术,2005,29(5):407-409. YAN J P,SHOU X Y,SHAO Z P,et al. The method of image dynamic intensify and morphing in imaging log. Well Logging Technology,2005,29(5):407-409.
[10] 周长发.科学与工程数值算法. 北京:清华大学出版社,2002. ZHOU C F. Numerical algorithms for science and engineering. Beijing:Tsinghua University Press,2002.
[11] 何素文,王慧萍,龚佳,等.SGDT伽马密度仪测井资料成像化 处理. 石油仪器,2011,25(4):61-63. HE S W,WANG H P,GONG J,et al. Image processing for logging data of SGDT gamma-density tool. Petroleum Instruments, 2011,25(4):61-63.
[12] 冉鲁威,杨铁牛. 三次周期样条函数在凸轮设计中的应用. 西 北林学院学报,1994,9(2):71-75. RAN L W,YANG T N. An application of cubic periodic spline function in cam mechanism design. Journal of Northwest Forestry University,1994,9(2):71-75.
[13] 刘华波.RGB与HSI颜色模型的转换方法对比研.http://www. paper.edu.cn/html/releasepaper /2008/04/1063/,2008. LIU H B. Comparative studies on the conversion methods between RGB and HSI color models. http://www.paper.edu.cn/html/ releasepaper/2008/04/1063,2008.
[14] Castleman K R. Digital image processing. New Jersy:Prentice- Hall Signal Processing Series,1996
[15] 闫建平,言语,司马立强,等. 泥页岩储层裂缝特征及其与“五 性”之间的关系. 岩性油气藏,2015,27(3):87-93. YAN J P,YAN Y,SIMA L Q,et al. Relationship between fracture characteristics and“five-property”of shale reservoir. Lithologic Reservoirs,2015,27(3):87-93.
[16] 童亨茂. 成像测井资料在构造裂缝预测和评价中的应用. 天 然气工业,2006,26(9):58-61. TONG H M. Application of imaging logging data in fracture prediction and evaluation. Natural Gas Industry,2006,26(9): 58-61.
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