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海上油气田智能破胶完井液体系

魏裕森,  熊友明,  周书胜

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文章导航 > 钻井液与完井液  > 2021 >  38(2): 226-230
魏裕森, 熊友明, 周书胜. 海上油气田智能破胶完井液体系[J]. 钻井液与完井液, 2021, 38(2): 226-230. doi: 10.3969/j.issn.1001-5620.2021.02.016
引用本文: 魏裕森, 熊友明, 周书胜. 海上油气田智能破胶完井液体系[J]. 钻井液与完井液, 2021, 38(2): 226-230. doi: 10.3969/j.issn.1001-5620.2021.02.016
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WEI Yusen, XIONG Youming, ZHOU Shusheng. Study On Intelligent Gel Breaking Completion Fluid System In Offshore Oil-Gas Field[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(2): 226-230. doi: 10.3969/j.issn.1001-5620.2021.02.016
Citation: WEI Yusen, XIONG Youming, ZHOU Shusheng. Study On Intelligent Gel Breaking Completion Fluid System In Offshore Oil-Gas Field[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(2): 226-230. doi: 10.3969/j.issn.1001-5620.2021.02.016
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海上油气田智能破胶完井液体系

doi: 10.3969/j.issn.1001-5620.2021.02.016

  • 1. 西南石油大学石油与天然气工程学院, 成都 610500;

  • 2. 中海石油(中国)有限公司深圳分公司, 深圳 518067;

  • 3. 荆州嘉华科技有限公司, 湖北荆州 434000

基金项目: 

湖北省重点研发计划项目“抗高温环保型钻井液用聚合物材料研究与应用”（2020BAB072）

详细信息
    作者简介:

    魏裕森,1981年生,高级工程师,西南石油大学在读博士,主要从事海上石油钻完井技术管理与研究工作。E-mail:weiys@cnooc.com.cn

    通讯作者:

    熊友明,教授,博士生导师,主要从事现代完井工程、防砂技术的研究。E-mail:xiongym@swpu.edu.cn

  • 中图分类号: TE257.6

Study On Intelligent Gel Breaking Completion Fluid System In Offshore Oil-Gas Field

  • 1. School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500;

  • 2. Shenzhen Branch Company CNOOC, Shenzhen, Guangdong 518067;

  • 3. Jingzhou Jiahua Technology Co., Ltd., Jingzhou, Hubei 434000

    摘要
  • 摘要: 针对海上油气田稠油油藏开发，采用鱼骨刺分支井技术，分支井段充填过程完井液无法进行破胶返排，使分支井段无法有效实施砾石充填，因此，研发出一套配套智能破胶完井液体系。该体系采用琥珀酸酐改性稳定性强的黄原胶，控制琥珀酸酐加量、反应时间决定琥珀酸酯基团取代度，通过琥珀酸酐消耗黄原胶中的醇羟基，抑制氧化自由基能力降低，降低黄原胶稳定性，避免完井液破胶困难的问题。通过优化NaOH、Na2CO3、抗氧化剂加量来调控完井液破胶时间达到智能破胶的目的。通过优化改性黄原胶XC-2配制的完井液配方，可将完井液破胶时间控制在3～8 d；黄原胶XC-1配制的完井液破胶时间可控制在5～14 d；流型调节剂XC-1、XC-2分别配制的完井液破胶前后储层渗透率恢复值均大于89%，对储层均具有较好的保护效果。

     

    Abstract: For the development of heavy oil reservoirs in offshore oil and gas fields, the fish bone spur branch well technology was adopted, and the completion fluid in the branch well filling process cannot be gel-broken, so that gravel pack operation cannot be effectively implemented in the branch well. Therefore, an intelligent gel breaking completion fluid system was developed. Using the completion fluid of xanthan gum modified by succinic anhydride to solve the problem. Controlling the addition of succinic anhydride and reaction time to determine the substitution degree of succinic ester group. Alcohol hydroxyl was replaced by succinic anhydride in xanthan gum, it can reduce the ability of inhibiting oxidative free radicals, reduce the stability of xanthan gum, and solve the problem about difficultly breaking completion fluid. To achieve the purpose of intelligent gel breaking the gel-breaking time of completion fluid was regulated by optimizing the dosage of NaOH, Na2CO3 and antioxidant. Breaking time of the completion fluid prepared by XC-2 was controlled within 3-8 days. Breaking time of the completion fluid prepared by XC-1 was controlled within 5-14 days. The recovery values of reservoir permeability were all greater than 89% before and after the gel breaking of completion fluid prepared by XC-1 and XC-2, which had good protection effect to the reservoir.

     

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  • 收稿日期:  2020-12-20

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