石油勘探与开发 >

2019 , Vol. 46 >Issue 6: 1178 - 1186

DOI: https://doi.org/10.11698/PED.2019.06.15

石油工程

流体黏速物性对砾石层堵塞影响机制及充填防砂井工作制度优化实验

  • 董长银 ,
  • 周玉刚 ,
  • 陈强 ,
  • 朱春明 ,
  • 李彦龙 ,
  • 李效波 ,
  • 刘亚宾
展开
  • 1. 非常规油气开发教育部重点实验室（中国石油大学（华东））,山东青岛 266580;
    2. 青岛海洋地质研究所,山东青岛 266073;
    3. 中海油服油田生产事业部,天津 300459
董长银（1976-）,男,河南卫辉人,博士,中国石油大学（华东）教授,主要从事岩石力学、出砂模拟、防砂完井与油气田开发工程方面的教学与研究工作。地址：山东省青岛市黄岛区长江西路66号,中国石油大学（华东）石油工程学院,邮政编码：266580。E-mail: dongcy@upc.edu.cn

收稿日期: 2019-03-11

  修回日期: 2019-07-18

  网络出版日期: 2019-11-20

基金资助

国家自然科学基金项目“深水储层微观出砂机理与过程模拟技术研究”（51774307）; 国家重点研发计划课题“水合物开采过程气-液-固多相流动规律与泥砂控制机理”（2017YFC0307304）; 国家海洋地质调查二级项目（DD20190231）

收起

Effects of fluid flow rate and viscosity on gravel-pack plugging and the optimization of sand-control wells production

  • DONG Changyin ,
  • ZHOU Yugang ,
  • CHEN Qiang ,
  • ZHU Chunming ,
  • LI Yanlong ,
  • LI Xiaobo ,
  • LIU Yabin
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  • 1. Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao 266580, China;
    2. Qingdao Institute of Marine Geology, Qingdao 266073, China;
    3. Production Optimization-COSL, Tianjin 300459, China

Received date: 2019-03-11

  Revised date: 2019-07-18

  Online published: 2019-11-20

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摘要

选用粒度中值0.10 mm和0.16 mm的2种地层砂、粒径0.6~1.2 mm的石英砂和陶粒,开展不同流体黏度与流体流速组合条件下的砾石层挡砂堵塞模拟实验,提出采用黏速指数（流体黏度与流速的乘积）表征流体物性和流动条件对砾石层堵塞的影响机制和规律,同时提出了砾石充填防砂井投产工作制度优化方法。研究表明地层砂侵入交混带渗透率、砾石层最终堵塞渗透率与携砂流体流速、黏度负相关,流速越高、黏度越大,地层砂侵入交混带渗透率、砾石层最终堵塞渗透率越低。流体流速、黏度是影响砾石层堵塞程度的关键参数,黏速指数可以很好地表征流体的流动特征,同时也便于分析砾石层堵塞机理;不同黏度和流速组合,只要最终的黏速指数相同（近）,其对砾石层总体渗透率的影响基本一致;砾石层渗透率随着黏速指数增加首先迅速下降,然后降速变缓直至基本稳定。最优配产量与阶梯提产相结合的砾石充填防砂井投产工作制度优化方法,可以有效降低携砂流体对砾石层渗透率的损害,提高油井生产效益。图14表3参25

关键词： 砾石充填; 挡砂实验; 堵塞规律; 黏速指数; 工作制度; 优化方法; 堵塞模拟

本文引用格式

董长银 , 周玉刚 , 陈强 , 朱春明 , 李彦龙 , 李效波 , 刘亚宾 . 流体黏速物性对砾石层堵塞影响机制及充填防砂井工作制度优化实验[J]. 石油勘探与开发, 2019 , 46(6) : 1178 -1186 . DOI: 10.11698/PED.2019.06.15

Abstract

Series of experiments were performed to simulate the invasion of formation sand into and the plugging process of gravel-pack at different viscosities and flowing rates of fluid. Two types of formation sands with the medium size of 0.10 mm and 0.16 mm and the gravel and ceramicite of 0.6-1.2 mm were used in the experiments. A new viscosity-velocity index (the product of fluid viscosity and velocity) was put forward to characterize the influencing mechanism and law of physical property and flow condition of formation fluid on gravel-pack plugging, and a new method to optimize the production rate of wells controlling sand production with gravel-packing was proposed. The results show that the permeability of formation sand invaded zone and final permeability of plugged gravel-pack have negative correlations with viscosity and flow velocity of fluid, the higher the flow velocity and viscosity, the lower the permeability of formation sand invaded zone and final permeability of plugged gravel-pack will be. The flow velocity and viscosity of fluid are key factors affecting plugging degree of the gravel zone. The velocity-viscosity index (v-v index) can reflect the flow characteristics of fluid very well and make it easier to analyze the plugging mechanism of gravel zone. For different combinations of fluid viscosity and flow velocity, if the v-v index is the same or close, their impact on the final gravel permeability would be the same or close. With the increase of the v-v index, the permeability of plugged gravel zone decreases first, then the reduction rate slows down till the permeability stabilizes. By optimizing production and increasing production step by step, the optimal working scheme for sand-control well can reduce the damage to gravel-pack zone permeability caused by sand-carrying fluid effectively, and increase well productivity and extend the sand control life.

Key words： gravel-pack; sand retention experiment; plugging law; viscosity-velocity index; working scheme; optimization method; plugging simulation

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