石油与天然气地质 ›› 2017, Vol. 38 ›› Issue (4): 658-664.doi: 10.11743/ogg20170403

• 油气地质 • 上一篇    下一篇

碳酸盐岩缝洞型油藏注采井网构建及开发意义——以塔河油田为例

鲁新便1, 荣元帅1, 李小波1, 吴锋2   

  1. 1. 中国石化 西北油田分公司 勘探开发研究院, 新疆 乌鲁木齐 830011;
    2. 西南石油大学 油气藏与地质国家重点实验室, 四川 成都 610500
  • 收稿日期:2017-02-12 修回日期:2017-07-10 出版日期:2017-08-28 发布日期:2017-09-09
  • 第一作者简介:鲁新便(1963-),男,博士、教授级高级工程师,碳酸盐岩缝洞型油藏开发地质及油藏工程设计。E-mail:lxbmail@.com。
  • 基金项目:
    国家科技重大专项（2016ZX05053）；中石化控递减重大专项（ZDP17003）。

Construction of injection-production well pattern in fractured-vuggy carbonate reservoir and its development significance:A case study from Tahe oilfield in Tarim Basin

Lu Xinbian1, Rong Yuanshuai1, Li Xiaobo1, Wu Feng2   

  1. 1. Petroleum Exploration & Production Research Institute, Northwest Oilfield Company, SINOPEC, Urumqi, Xinjiang 830011, China;
    2. State Key Laboratory of Oil and Gas Reservior Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2017-02-12 Revised:2017-07-10 Online:2017-08-28 Published:2017-09-09

PDF (PC)

1629

被引次数

13

摘要： 为了建立一套能够反映塔河油田碳酸盐岩缝洞型油藏复杂缝洞结构和连通关系的注采井网。从不同岩溶地质背景特征出发，通过分析风化壳型、断控型和暗河型储集体的缝洞空间结构特征、注采关系特点和井网形式，提出了“注采空间结构井网”的理论概念，即以缝洞体空间展布为基础，结合缝洞形态、尺度、连通结构等信息，在三维空间上构建注水井与采油井之间的配置关系，最大程度提高缝洞控制、水驱储量动用及采收率。研究认为：风化壳型注采关系以“低注高采，缝注孔洞采、小洞注大洞采”为特点，适宜建立“面状”注采井网；断控型注采井组以“等高注采、缝注洞采、边注中采”的注采关系为主，应建立“条带状”的注采井网；暗河型注采井组易形成“低注高采、洞注洞采”的注采关系，可建立“线状”注采井网。同时应形成与井网形式相匹配的差异化注水方式，以全面体现注采空间结构井网"多向注采、多段注采、立体注采"的构建目标。

关键词: 注采关系, 注水开发, 注采井网, 缝洞型油藏, 提高采收率, 塔河油田, 塔里木盆地

Abstract: It is desirable to establish an injection-production well pattern that can reflect the complex fracture-vug structure and connectivity of the fractured-vuggy carbonate reservoir in Tahe oilfield.The fracture-vug spatial structure characteristics of reservoirs of weathering crust type,fault-controlling type and underground river type were comprehensively analyzed in the geological contexts of various karst types.These in combination with the analysis of characteristics of injection-production relationship and basic well patterns led to the concept of "injection-production spatial structure well pattern".It is to establish the relationship of injector and producer in a three dimensional space based on the spatial distribution of fracture-vug complex and in combination with parameters of fracture-vug such as morphology,scale and connectivity,so as to maximize control of fracture-vug,producing reserves of waterflooding and recovery factor.The results show that the injector-producer relationship for reservoirs of weathering crust type is characterized by "injector at lower location and producer at higher location,injection through fractures and production through vugs,injection through smaller vugs and production through larger vugs,thus "plane" injection-production well pattern is suitable.The injector-producer relationship for reservoirs of fault-controlling type is characterized by "isoheight injection and production,injection through fractures and production through vugs",thus banded injection-production well pattern should be adopted.The injector-producer relationship for underground river type is characterized by "injector at lower location and producer at higher location,injection through vug and production through vug",thus linear injection-production well pattern is suitable.In addition,differential water injection schemes should be selected according to the well pattern,so as to realize the goal of this concept,i.e.multi-direction injection-production,multi-segment injection-production and spatial injection-production.

Key words: injection-production relationship, water flooding, injection-production well pattern, fractured-vuggy reservoir, EOR, Tahe oilfield, Tarim Basin

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