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首页> 外文期刊>Environmental Science & Technology >Fracture Sealing with Microbially-Induced Calcium Carbonate Precipitation: A Field Study
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Fracture Sealing with Microbially-Induced Calcium Carbonate Precipitation: A Field Study

机译：微生物诱导的碳酸钙沉淀封闭裂缝的现场研究

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摘要

A primary environmental risk from unconventional oil and gas development or carbon sequestration is subsurface fluid leakage in the near wellbore environment. A potential solution to remediate leakage pathways is to promote microbially induced calcium carbonate precipitation (MICP) to plug fractures and reduce permeability in porous materials. The advantage of microbially induced calcium carbonate precipitation (MICP) over cement-based sealants is that the solutions used to promote MICP are aqueous. MICP solutions have low viscosities compared to cement, facilitating fluid transport into the formation. In this study, MICP was promoted in a fractured sandstone layer within the Fayette Sandstone Formation 340.8 m below ground surface using conventional oil field subsurface fluid delivery technologies (packer and bailer). After 24 urea/calcium solution and 6 microbial (Sporosarcina pasteurii) suspension injections, the injectivity was decreased (flow rate decreased from 1.9 to 0.47 L/min) and a reduction in the in-well pressure falloff (＞30% before and 7% after treatment) was observed. In addition, during refracturing an increase in the fracture extension pressure was measured as compared to before MICP treatment. This study suggests MICP is a promising tool for sealing subsurface fractures in the near wellbore environment.
机译：非常规油气开发或碳固存的主要环境风险是井眼附近环境中的地下流体泄漏。补救泄漏途径的潜在解决方案是促进微生物诱导的碳酸钙沉淀（MICP）堵塞裂缝并降低多孔材料的渗透率。与水泥基密封胶相比，微生物诱导的碳酸钙沉淀（MICP）的优势在于，用于促进MICP的溶液是水性的。与水泥相比，MICP解决方案的粘度低，有助于将流体输送到地层中。在这项研究中，使用常规的油田地下流体输送技术（packer和bailer）在地表以下340.8 m的Fayette砂岩地层中的裂隙砂岩层中促进了MICP。注入24个尿素/钙溶液和6个微生物（Sporosarcina pasteurii）悬浮液后，注入量降低（流速从1.9降至0.47 L / min）并降低了井内压力下降（> 30％之前和7％）治疗后）。另外，在再压裂期间，与MICP处理之前相比，测得了裂缝延伸压力的增加。这项研究表明，MICP是用于密封井眼附近地下裂缝的有前途的工具。

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  • 来源
    《Environmental Science & Technology》 |2016年第7期|4111-4117|共7页
  • 作者

    Adrienne J. Phillips; Alfred B. Cunningham; Robin Gerlach; Randy Hiebert; Chiachi Hwang; Bartholomeus P. Lomans; Joseph Westrich; Cesar Mantilla; Jim Kirksey; Richard Esposito; Lee Spangler;

  • 作者单位

    Center for Biofilm Engineering, Montana State University, RM 366 EPS Building, Bozeman, Montana 59717, United States;

    Center for Biofilm Engineering, Montana State University, RM 366 EPS Building, Bozeman, Montana 59717, United States;

    Center for Biofilm Engineering, Montana State University, RM 366 EPS Building, Bozeman, Montana 59717, United States;

    Montana Emergent Technologies, 160 W. Granite Street, Butte, Montana 59701, United States;

    Center for Biofilm Engineering, Montana State University, RM 366 EPS Building, Bozeman, Montana 59717, United States;

    Shell Global Solution International B.V., Kessler Park 1, 2288 GS Rijswijk, The Netherlands;

    Shell International Exploration and Production Inc. 3333 Highway 6 South, Houston, Texas 77025, United States;

    Shell International Exploration and Production Inc. 3333 Highway 6 South, Houston, Texas 77025, United States;

    Loudon Technical Services LLC, 1611 Loudon Heights Road, Charleston, West Virginia 25314, United States;

    Southern Company, P.O. Box 2641, BIN 14N-8195, Birmingham, Alabama 35291-8195, United States;

    Energy Research Institute, Montana State University, P.O. Box 172465, Bozeman, Montana 59717, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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