石油学报 ›› 2023, Vol. 44 ›› Issue (3): 471-484.DOI: 10.7623/syxb202303006

• 地质勘探 • 上一篇    下一篇

塔里木盆地北部潜山岩溶相带定量表征与储层评价

申威1, 唐军1, 信毅2, 曹磊3, 陈文迪4, 唐保勇2, 何泽1, 齐戈为1   

  1. 1. 长江大学地球物理与石油资源学院 湖北武汉 430100;
    2. 中国石油塔里木油田公司勘探开发研究院 新疆库尔勒 841000;
    3. 中国石油塔里木油田公司东河采油气管理区 新疆库尔勒 841000;
    4. 中国石油塔里木油田分公司油气田产能建设事业部 新疆库尔勒 841000
  • 收稿日期:2021-11-29 修回日期:2023-02-06 出版日期:2023-03-25 发布日期:2023-04-06
  • 通讯作者: 唐军,男,1979年3月生,2015年获长江大学博士学位,现为长江大学地球物理与石油资源学院测井系主任、副教授,主要从事地球物理测井教学及研究工作。Email:tangjun@yangtzeu.edu.cn
  • 作者简介:申威,男,1998年5月生,2020年获长江大学勘查技术与工程专业学士学位,现为长江大学地球探测与信息技术专业硕士研究生,主要从事复杂储层测井新技术评价方法研究工作。Email:201600734@yangtzeu.edu.cn
  • 基金资助:
    中国石油科技创新基金项目"裂缝渗透率测井计算理论模型及实验研究"(2020D-5007-0306)资助。

Q uantitative characterization and reservoir evaluation of karst facies belt of buried hill in northern Tarim Basin

Shen Wei1, Tang Jun1, Xin Yi2, Cao Lei3, Chen Wendi4, Tang Baoyong2, He Ze1, Qi Gewei1   

  1. 1. College of Geophysics and Petroleum Resources, Yangtze University, Hubei Wuhan 430100, China;
    2. Exploration and Development Research Institute, PetroChina Tarim Oilfield Company, Xinjiang Korla 841000, China;
    3. Oil and Gas Production Management Department of Donghe Zone, PetroChina Tarim Oilfield Company, Xinjiang Korla 841000, China;
    4. Oil & Gas Field Productivity Construction Department, PetroChina Tarim Oilfeld Company, Xinjiang Korla, 841000, China
  • Received:2021-11-29 Revised:2023-02-06 Online:2023-03-25 Published:2023-04-06

摘要: 潜山型储层是中国油气资源增储上产的主要勘探方向之一,塔里木盆地北部潜山储集层经多井测试获高产油气流,揭示了其巨大的勘探开发潜力,但储层强非均质性给测井定量表征及储层评价带来很大困难。基于岩心、岩石薄片和测井资料,结合潜山发育模式及沉积演化过程,纵向上将塔里木盆地北部寒武系白云岩潜山划分为:表层岩溶带、垂直渗流带、水平潜流带和深部缓流带;综合常规测井、成像测井及阵列声波测井响应特征建立不同岩溶相带定性识别方法;利用深侧向电阻率、视地层水电阻率谱峰表征系数及斯通利波表征系数等测井参数实现各相带测井定量表征;在此基础上,针对不同岩溶相带的差异开展储层岩石物理建模与储层分类评价。应用结果表明:塔里木盆地北部地区表层岩溶带、垂直渗流带及水平潜流带为有利储层发育带,平面分布规律为自NE向SW方向有利储层发育带厚度逐渐减小,其中表 层岩溶带以溶蚀孔洞发育为主;垂直渗流带以高角度裂缝发育为主,发育的裂缝纵向张开性差但横向延伸性好;水平潜流带以水平裂缝和溶孔、溶洞发育为主,发育的裂缝纵向张开性好但横向延伸性差。塔里木盆地北部地区有多口井应用基于电性特征和考虑裂缝形态的压缩系数分带建立的饱和度评价方法,其实际应用效果良好,结合现场试油结论发现,表层岩溶带和垂直渗流带发育的储层主要为油气层,水平潜流带及深部缓流带发育的储层主要为水层及干层。

关键词: 塔里木盆地, 潜山, 岩溶相带, 定量表征, 储层评价

Abstract: Buried hill reservoirs are the main exploration direction for increasing reserves and production of oil and gas resources in China. High-yield oil and gas flow is obtained by multi-well test of buried hill reservoirs in northern Tarim Basin, indicating great exploration and development potential. However, strong reservoir heterogeneity brings great difficulties to quantitative logging characterization and reservoir evaluation. Based on core, thin section and logging data, combined with buried hill development model and sedimentary evolution process, the Cambrian dolomite buried hill in northern Tarim Basin is vertically divided into surface karst zone, vertical seepage zone, horizontal subsurface flow zone and deep slow flow zone. Comprehensive conventional, imaging and array acoustic logging response characteristics to establish different karst facies qualitative identification method ; then, the logging parameters such as deep lateral resistivity, apparent formation water resistivity peak representation coefficient and Stoneley wave representation coefficient are used to realize the quantitative characterization of each facies belt. On this basis, reservoir rock physical modeling and reservoir classification evaluation are carried out according to the differences of different karst facies belts. The application research shows that the surface karst zone, vertical seepage zone and horizontal subsurface flow zone in northern Tarim Basin are favorable reservoir development zones. The plane distribution law is that the thickness of favorable reservoir development zone decreases gradually from northeast to southwest, and the surface karst zone is dominated by dissolved pores. The vertical seepage zone is dominated by high-angle fractures, and the developed fractures have poor longitudinal opening but good lateral extension. Horizontal subsurface flow zone is mainly developed by horizontal fractures, dissolved pores and caves. The developed fractures have good longitudinal opening but poor lateral extension. The saturation evaluation method based on electrical characteristics and compression coefficient zoning considering fracture morphology is applied in multiple wells in Tabei area. The practical application effect is good. Combined with the field test results, it is found that the surface karst zone and vertical zone are vertical.

Key words: Tarim Basin, buried hill, karst facies belt, quantitative characterization, reservoir evaluation

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