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International Journal of Mining and Geo-Engineering، جلد ۴۹، شماره ۲، صفحات ۲۸۱-۲۸۸
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عنوان انگلیسی Gas migration through cement slurries analysis: A comparative laboratory study
چکیده انگلیسی مقاله Cementing is an essential part of every drilling operation. Protection of the wellbore from formation fluid invasion is one of the primary tasks of a cement job. Failure in this task results in catastrophic events, such as blow outs. Hence, in order to save the well and avoid risky and operationally difficult remedial cementing, slurry must be optimized to be resistant against gas migration phenomenon. In this paper, performances of the conventional slurries facing gas invasion were reviewed and compared with modified slurry containing special gas migration additive by using fluid migration analyzer device. The results of this study reveal the importance of proper additive utilization in slurry formulations. The rate of gas flow through the slurry in neat cement is very high; by using different types of additives, we observe obvious changes in the performance of the cement system. The rate of gas flow in neat class H cement was reported as 36000 ml/hr while the optimized cement formulation with anti-gas migration and thixotropic agents showed a gas flow rate of 13.8 ml/hr.
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نویسندگان مقاله آرین ولایتی |
school of mining, petroleum and geophysics engineering; university of shahrood, iran

عزت الله کاظم زاده |
research institute of petroleum industry, iran
سازمان اصلی تایید شده: پژوهشگاه صنعت نفت (Research institute of petroleum industry)

حمید سلطانیان |
school of mining, petroleum and geophysics engineering; university of shahrood, iran

بهزاد tokhmechi |
school of mining, petroleum and geophysics engineering; university of shahrood, iran

نشانی اینترنتی http://ijmge.ut.ac.ir/article_56113_617ab239144a1942dbbfb308f70a2ae5.pdf
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