Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 32, No. 5 (May 2019) 794-798   

PDF URL: http://www.ije.ir/Vol32/No5/B/22-3093.pdf  
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  INFLUENCE OF THE SOLID PHASE'S FRACTIONAL COMPOSITION ON THE FILTRATION CHARACTERISTICS OF THE DRILLING MUD
 
V. Morenov and E. Leusheva
 
( Received: January 16, 2019 – Accepted in Revised Form: May 02, 2019 )
 
 

Abstract    Filtration of the drilling mud is one of it's most important parameters, especially when drilling-in producing formation. Decrease of filtration characteristics allows reducing both solid and liquid phases's penetration zone into the formation. The study of the effect of the weighting-bridging agent's fractional composition on the filtration rate allows selecting of optimal composition of the solid phase in the the drilling mud. This paper presents studies of the static filtration rate of drilling mud with addition of various weighting-bridging agents. The obtained result indicates that an intensive decrease in the filtration rate is observed at calcium carbonate's introduction into the solution with an average particle size of up to 50 μm. Further studies should be directed to investigate the dynamic filtration rate, the possibility of "mixing" of various fractions in the composition of one solution and the evaluation of their influence on the filtration rate.

 

Keywords    Filtration Rate; Weighting Agent; Drilling Mud; Bridging Agent

 

چکیده   

فیلتراسیون سیال حفاری به عنوان یکی از مهم ترین پارامتر های آن به ویژه در حفاری لایه های تولیدی به حساب می رود. کاهش خواص فیلتری، امکان کاهش منطقه نفوذ فاز های جامد و مایع سیال حفاری به دورن لایه را فراهم می آورد. مطالعه تاثیر ترکیب بخشی عامل وزنی بر شاخص فیلتراسیون، امکان انتخاب ترکیب بهینه فاز جامد در ترکیب سیال حفاری را فراهم می آورد. نتایج به دست آمده گواه بر این هستند که اضافه کردن کلسیم کربنات با با سایز میانگین ذرات تا 50 میکرومتر منجر به کاهش شدید شاخص فیلتراسیون می گردد. پژوهش های بعدی باید در جهت مطالعه شاخص دینامیک فیلتراسیون، مطالعه امکان ترکیب بخش های مختلف در یک سیال حفاری و ارزیابی تاثیر آن ها بر شاخص فیلتراسیون باشند.

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