کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8109699 | 1522259 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental evaluation on the damages of different drilling modes to tight sandstone reservoirs
ترجمه فارسی عنوان
ارزیابی تجربی روی آسیب های مختلف روش های حفاری به مخازن تنگ ماسه سنگ
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
حالت حفاری، حفاری هوایی، حفاری زیر متعادل با مایع، حفاری با نفوذ، ماسه سنگ تنگ، آسیب مخزن، نفوذپذیری، ارزیابی تجربی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
The damages of different drilling modes to reservoirs are different in types and degrees. In this paper, the geologic characteristics and types of such damages were analyzed. Then, based on the relationship between reservoir pressure and bottom hole flowing pressure corresponding to different drilling modes, the experimental procedures on reservoir damages in three drilling modes (e.g. gas drilling, liquid-based underbalanced drilling and overbalanced drilling) were designed. Finally, damage simulation experiments were conducted on the tight sandstone reservoir cores of the Jurassic Ahe Fm in the Tarim Basin and Triassic Xujiahe Fm in the central Sichuan Basin. It is shown that the underbalanced drilling is beneficial to reservoir protection because of its less damage on reservoir permeability, but it is, to some extent, sensitive to the stress and the empirical formula of stress sensitivity coefficient is obtained; and that the overbalanced drilling has more reservoir damages due to the invasion of solid and liquid phases. After the water saturation of cores rises to the irreducible water saturation, the decline of gas logging permeability speeds up and the damage degree of water lock increases. It is concluded that the laboratory experiment results of reservoir damage are accordant with the reservoir damage characteristics in actual drilling conditions. Therefore, this method reflects accurately the reservoir damage characteristics and can be used as a new experimental evaluation method on reservoir damage in different drilling modes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Natural Gas Industry B - Volume 4, Issue 4, July 2017, Pages 256-263
Journal: Natural Gas Industry B - Volume 4, Issue 4, July 2017, Pages 256-263
نویسندگان
Gao Li, Wuqiang Cai, Yingfeng Meng, Liang Wang, Limin Wang, Xiaobing Zhang,