石油勘探与开发 >

2019 , Vol. 46 >Issue 2: 281 - 289

DOI: https://doi.org/10.11698/PED.2019.02.08

油气勘探

川南地区中二叠统茅口组岩溶储集层类型与分布规律

  • 黄士鹏 ,
  • 江青春 ,
  • 冯庆付 ,
  • 伍亚 ,
  • 鲁卫华 ,
  • 苏旺 ,
  • 陈晓月 ,
  • 任梦怡 ,
  • 彭辉
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  • 1.中国石油勘探开发研究院,北京 100083;
    2.中国石油西南油气田公司蜀南气矿,四川泸州 646000;
    3.中国石油西南油气田公司华油公司,成都 610213
黄士鹏（1984-）,男,山东泰安人,博士,中国石油勘探开发研究院高级工程师,主要从事碳酸盐岩油气藏成藏研究工作。地址：北京市海淀区学院路20号,中国石油勘探开发研究院四川盆地研究中心,邮政编码：100083。E-mail: shipenghuang@petrochina.com.cn

收稿日期: 2018-09-06

  网络出版日期: 2019-01-22

基金资助

中国石油天然气股份有限公司项目“四川盆地川中-川南地区栖霞茅口组天然气勘探有利区评价优选”（KT2018-01-02）; 中国石油天然气股份有限公司项目“2018年度四川盆地泥盆系-下二叠统区带评价与目标优选研究”（XNS14NH2018-005）

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Type and distribution of Mid-Permian Maokou Formation karst reservoirs in southern Sichuan Basin, SW China

  • HUANG Shipeng ,
  • JIANG Qingchun ,
  • FENG Qingfu ,
  • WU Ya ,
  • LU Weihua ,
  • SU Wang ,
  • CHEN Xiaoyue ,
  • REN Mengyi ,
  • PENG Hui
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  • 1.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
    2.Southern Sichuan Gas Mine, PetroChina Southwest Oil & Gas Field Company, Luzhou 646000, China;
    3.Sichuan Huayou Group Corporation, Limited, PetroChina Southwest Oil & Gas Field Company, Chengdu 610213, China;

Received date: 2018-09-06

  Online published: 2019-01-22

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摘要

基于65口井自然伽马、密度、声波时差、补偿中子以及深浅双侧向电阻率、井径等常规测井资料,结合钻井、岩心、薄片和产能等资料,将川南地区中二叠统茅口组岩溶储集层划分为裂缝-孔洞型、孔隙-孔洞型、裂缝型、裂缝- 洞穴型等4种类型;其中,高产稳产井的储集层类型主要为裂缝-孔洞型和孔隙-孔洞型。茅口组岩溶储集层厚度较薄,具有垂向分带性,划分为上、下两套储集层段,分别受茅三段—茅二a亚段和茅二b亚段两个成滩期、岩溶垂向分带性和断裂的控制,上部储集层段的发育程度和单井产能优于下部储集层段。纵向上,上部储集层厚度明显大于下部;横向上,上部储集层段在宜宾—自贡—威远—大足一带、重庆西南、泸州东南一带厚度较大;下部储集层段在内江—自贡—泸州一带以及大足—泸州一带厚度较大,储集层厚值区与构造斜坡或向斜组合地区是有利勘探区。图8表1参38

关键词： 川南地区; 中二叠统; 茅口组; 岩溶储集层; 孔洞; 裂缝; 颗粒滩; 测井响应

本文引用格式

黄士鹏 , 江青春 , 冯庆付 , 伍亚 , 鲁卫华 , 苏旺 , 陈晓月 , 任梦怡 , 彭辉 . 川南地区中二叠统茅口组岩溶储集层类型与分布规律[J]. 石油勘探与开发, 2019 , 46(2) : 281 -289 . DOI: 10.11698/PED.2019.02.08

Abstract

Based on the analysis of the responses of conventional logs such as natural gamma (GR), density (DEN), acoustic interval transit time (AC), compensated neutron (CNL), dual lateral resistivity (Rlld, Rlls), and caliper log (CAL), combined with drilling data, cores, thin section and productivity of 65 wells, the reservoirs in the Mid-Permian Maokou Formation of southern Sichuan basin were divided into four types, fractured-vuggy, pore-vuggy, fractured and fractured-cavity. The main reservoirs in high productivity wells are fractured-vuggy and pore-vuggy. The reservoirs of Maokou Formation are generally thin, and can be divided into the upper reservoir segment (layer a of the second member to the third member of Maokou Formation, P2m2a-P2m3) and the lower segment (layer b of the second member of Maokou Formation, P2m2b). The two reservoir segments are mainly controlled by two grain beaches during the sedimentation of P2m2a-P2m3 and P2m2b, the vertical zonation of karst, and the fractures. The upper reservoir segment is generally better than the lower one in development degree and single well productivity, and is much thicker than the lower one. It is thicker in the Yibin-Zigong-Weiyuan-Dazu area, the southwestern area of Chongqing and the southeastern area of Luzhou, while the lower segment is thicker in the Neijiang-Zigong-Luzhou area and the Dazu-Luzhou area. The areas with big reservoir thickness at tectonic slope or syncline parts are the favorable exploration areas.

Key words： southern Sichuan Basin; Mid-Permian; Maokou Formation; karst reservoir; cavity; fracture; grain beach; logging response

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