新疆石油地质 ›› 2020, Vol. 41 ›› Issue (3): 359-364.doi: 10.7657/XJPG20200317

• 应用技术 • 上一篇    下一篇

王府断陷深层气藏火山岩储集层可压性评价

刘光玉1, 王卫明2, 王艳玲1   

  1. 1. 中国石油 吉林油田分公司 油气工程研究院,吉林 松原 138000
    2. 中国石化 石油工程技术研究院,北京 100011
  • 收稿日期:2019-08-08 修回日期:2019-11-11 出版日期:2020-06-01 发布日期:2020-06-05
  • 作者简介:刘光玉(1974-),女,吉林松原人,高级工程师,硕士,储集层综合评价,(Tel)13894136757(E-mail)liugyjl@ petrochina.com.cn
  • 基金资助:
    国家科技重大专项(2016ZX05046-004)

Evaluation of Fracability of Volcanic Reservoir in Deep Gas Reservoirs of Wangfu Fault Depression

LIU Guangyu1, WANG Weiming2, WANG Yanling1   

  1. 1. Research Institute of Oil Production Technology, Jilin Oilfield Company, PetroChina, Songyuan, Jilin 138000, China
    2. Research Institute of Petroleum Engineering, Sinopec, Beijing 100011, China
  • Received:2019-08-08 Revised:2019-11-11 Online:2020-06-01 Published:2020-06-05

摘要:

王府断陷深层气藏火山岩储集层具有埋藏深、物性差等特征,传统的开采手段受限,需进行压裂改造才能有效建产。以王府断陷深层气藏火山岩储集层为研究目标,通过岩石力学实验和声发射测试,综合岩石的各向异性、脆性、应力敏感性、天然裂缝密度、声发射活动性等共同评价储集层的可压性和造缝能力。研究表明:王府断陷深层气藏火山岩脆性矿物含量高,抗压强度较大;岩石弹性波速变化范围大,应力敏感性有一定的差异性,天然裂缝各向异性弱;储集层存在一定的流体敏感性,但敏感性强弱程度不一;蒸馏水和质量分数为15%的KCl溶液的造缝能力较强。储集层可压性综合评价对优选压裂层位、压裂液体系和设计压裂改造方案提供理论指导,为王府断陷深层气藏的勘探开发提供依据。

关键词: 王府断陷, 深层气藏, 火山岩, 可压性, 压裂改造, 力学特性, 天然裂缝, 造缝能力

Abstract:

The volcanic rocks in the deep gas reservoir of Wangfu fault depression are characterized by deep burial and poor physical properties, so the conventional production methods cannot get good effects and it is need to carry out fracturing stimulation in this kind of reservoirs. Taking the volcanic rock in the deep gas reservoir in Wangfu fault depression as the research object and based on rock mechanics experiment and acoustic emission test, the fracture making ability and fracability of the reservoir are comprehensively evaluated by combining the anisotropy, brittleness, stress sensitivity, natural fracture density and acoustic emission activity of the rock. The results show that the volcanic rocks in the deep gas reservoir of Wangfu fault depression have high content of brittle minerals and high compressive strength; the elastic wave velocity of the rock varies a lot, the stress sensitivity is different and the anisotropy of natural fractures is weak; the reservoir is sensitive to fluids and the fluid fracture making ability are relatively strong when distilled water and KCl solution with the mass fraction of 15% are used. The comprehensive evaluation of reservoir fracability can provide theoretical guidance for the optimization of fracturing horizon and fracturing fluid and design of fracturing plan, meanwhile provide basis for exploration and development of the deep gas reservoirs in Wangfu fault depression.

Key words: Wangfu fault depression, deep gas reservoir, volcanic rock, fracability, fracturing, mechanical property, natural fracture, fracture making ability

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