地球科学进展 ›› 2018, Vol. 33 ›› Issue (11): 1154 -1160. doi: 10.11867/j.issn.1001-8166.2018.11.1154.

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基于曲线重构的缝洞型碳酸盐岩储层测井识别研究——以南图尔盖盆地Karabulak油田Pz层为例 *
陈科贵 1( ), 刘思序 1, *( ), 王兆峰 2, 张翼飞 2   
  1. 1.西南石油大学地球科学与技术学院,四川 成都 610500
    2.中国石油国际勘探开发公司,北京 100032
  • 收稿日期:2018-07-09 修回日期:2018-08-28 出版日期:2018-11-20
  • 通讯作者: 刘思序 E-mail:chenkegui@21cn.com;1138128439@qq.com
  • 基金资助:
    国家自然科学基金项目“四川盆地油钾兼探的地球物理评价方法研究”(编号:41372103)资助.

A Logging Identification Method for Fractured Vuggy Carbonate Reservoirs Based on Curve Reconstruction: A Case Study from the Pz Formation in Karabulak Oil Field in the South Turgai Basin *

Kegui Chen 1( ), Sixu Liu 1, *( ), Zhaofeng Wang 2, Yifei Zhang 2   

  1. 1.School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China
    2.China Petroleum International Exploration and Development, Beijing 100032,China
  • Received:2018-07-09 Revised:2018-08-28 Online:2018-11-20 Published:2018-12-21
  • Contact: Sixu Liu E-mail:chenkegui@21cn.com;1138128439@qq.com
  • About author:

    First author:Chen Kegui(1959-), male, Zigong City, Sichuan Province, Professor. Research areas include petroleum geology, technology of well logging reservoir evaluation and survey research potash in Sichuan. E-mail: chenkegui@21cn.com

  • Supported by:
    Foundation item:Project supported by the National Natural Science Foundation of China "The study on geophysical evaluation method of oil and potash in Sichuan Basin"(No.41372103).

南图尔盖盆地Karabulak油田基底碳酸盐岩储层结构复杂、孔隙空间类型多样、非均质性极强,利用单一的常规测井方法对该类储层进行识别一直是测井解释的难点。利用深侧向电阻率、声波时差、密度、补偿中子等多条常规测井曲线的响应特征进行重构,并结合改进后的曲线变化率法,总结出了碳酸盐岩裂缝型储层、孔洞型储层和缝洞型储层在常规测井曲线上的响应规律,提出了一种针对研究区碳酸盐岩缝洞型储层的测井评价新方法。应用这一方法对研究区的X1、X2和X3井开展储层划分与评价,结果表明研究区碳酸盐岩储层类型主要为缝洞型。通过与试油结论和成像测井识别结果进行对比,研究提出的方法准确识别出了裂缝、孔洞发育的地层,显著提高了对研究区缝洞识别的效率和精度。

The basement carbonate reservoirs in the Karabulak oil field of the South Turgai Basin have the characteristics of complex structure, variety of pore type and strong heterogeneity. The identification of such reservoirs by single conventional logging method is always a difficult point in logging interpretation. In this paper, the response characteristics of conventional logging curves such as deep lateral resistivity, acoustic time difference, density and compensated neutron were used for reconstruction. Combined with the improved method of curve change rate, the response laws of fractured carbonate reservoirs, pore-cave reservoirs and fractured vuggy reservoirs on conventional logging curves were summed up, respectively. And a new logging evaluation method for carbonate fractured vuggy reservoirs in the Karabulak oil field of South Turgai Basin was proposed. This method was used to identify reservoirs in X1, X2 and X3 wells of this oilfield. The results show that the carbonate reservoirs in this area are mainly fractured-vuggy type. Compared with the oil test conclusion and imaging logging, the method proposed in this paper accurately divided the reservoir type. And the efficiency and accuracy of the reservoir division have been greatly improved.

中图分类号: 

表1 改进前后曲线变化率对比
Table 1 Comparison of curve change rate
表1 改进前后曲线变化率对比
Table 1 Comparison of curve change rate
表2 样本数据统计表
Table 2 Statistical results of sample data
表2 样本数据统计表
Table 2 Statistical results of sample data
图1 Karabulak油田缝洞识别图版
Fig.1 Karabulak oil field reservoir identification chart
图1 Karabulak油田缝洞识别图版
Fig.1 Karabulak oil field reservoir identification chart
图2 X1井测井综合解释图
Fig.2 Comprehensive interpretation result of X1 well
图2 X1井测井综合解释图
Fig.2 Comprehensive interpretation result of X1 well
图3 X2井测井综合解释图
Fig.3 Comprehensive interpretation result of X2 well
图3 X2井测井综合解释图
Fig.3 Comprehensive interpretation result of X2 well
图4 X3井测井综合解释图
Fig.4 Comprehensive interpretation result of X3 well
图4 X3井测井综合解释图
Fig.4 Comprehensive interpretation result of X3 well
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