石油勘探与开发 >

2019 , Vol. 46 >Issue 4: 693 - 702

DOI: https://doi.org/10.11698/PED.2019.04.07

油气勘探

渤南油田低渗透储集层岩性对地应力场的影响

  • 李志鹏 ,
  • 刘显太 ,
  • 杨勇 ,
  • 卜丽侠
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  • 1. 中国石油化工股份有限公司胜利油田分公司勘探开发研究院,山东东营 257015;
    2. 中国石油化工股份有限公司胜利油田分公司东辛采油厂,山东东营 257015
李志鹏（1983-）,男,山东临沂人,博士,胜利油田勘探开发研究院副研究员,主要从事油藏描述及储集层地应力研究。地址：山东省东营市东营区聊城路2号,胜利油田勘探开发研究院低渗透油田开发研究室,邮政编码：257015。 E-mail：lizhipeng20020015@126.com

收稿日期: 2018-10-30

  修回日期: 2019-03-21

  网络出版日期: 2019-07-17

基金资助

国家重大示范工程“渤海湾盆地济阳坳陷致密油开发示范工程”（2017ZX05072）; 胜利油田博士后课题“低渗透油藏相控地应力预测及应用”（YKB1514）

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Influences of lithology on in-situ stress field in low permeability reservoirs in Bonan Oilfield, Bohai Bay Basin, China

  • LI Zhipeng ,
  • LIU Xiantai ,
  • YANG Yong ,
  • BU Lixia
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  • 1. Exploration and Development Research Institute of Shengli Oilfield Company, Sinopec, Dongying 257015, China;
    2. Dongxin Oil Extraction Plant of Shengli Oilfield Company, Sinopec, Dongying 257015, China

Received date: 2018-10-30

  Revised date: 2019-03-21

  Online published: 2019-07-17

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摘要

针对岩石力学性质差异对储集层地应力场的影响机制问题开展详细分析及探讨。利用三轴压缩试验分析渤南油田低渗透储集层岩石力学性质的差异性。通过储集层力学分析探讨岩石力学性质差异对储集层地应力的影响机制。利用应力椭圆及有限元模拟方法,探讨岩石力学性质差异对储集层地应力场的影响规律。渤南油田低渗透储集层岩性越粗弹性模量越大、泊松比越低,砂岩相与泥岩相的岩石力学参数及应力-应变关系差异较大。岩性不同造成力学性质的差异,力学性质的差异造成岩性接触界面产生额外应力,额外应力的存在影响储集层地应力。不考虑构造特征对地应力场的影响,储集层地应力场受额外应力大小及岩性接触面与边界应力夹角的双重协同控制。图11表2参26

关键词： 岩相; 力学性质; 储集层; 地应力; 低渗透油藏; 应力场; 渤南油田

本文引用格式

李志鹏 , 刘显太 , 杨勇 , 卜丽侠 . 渤南油田低渗透储集层岩性对地应力场的影响[J]. 石油勘探与开发, 2019 , 46(4) : 693 -702 . DOI: 10.11698/PED.2019.04.07

Abstract

The differences in mechanical properties of rocks were analyzed by triaxial compression test in low permeability reservoirs of the Bonan Oilfield. Through the analysis of reservoir mechanics, the influence mechanisms of different mechanical properties of rocks on in-situ stress were studied. By means of stress ellipse and finite element simulation, the influence rules of different mechanical properties of rocks on in-situ stress field were discussed. In the Bonan Oilfield, the coarser rock has a larger Young's modulus value and a lower Poisson's ratio, the rock mechanical parameters and stress-strain relationship of sandstone facies and mudstone facies are different. Different rocks have different mechanical properties, which cause additional stress at the interface of rocks, and the existence of additional stress affects the in-situ stress. Without considering the influence of tectonic characteristics on the in-situ stress field, the in-situ stress is controlled by the magnitude of additional stress and the angle between lithofacies contact surface and boundary stress.

Key words： lithofacies; mechanical property; reservoir; in-situ stress; low permeability reservoir; stress field; Bonan Oilfield

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