کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5446179 1511128 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical Simulation of Wellhead Back Pressure in Under-balanced Drilling
ترجمه فارسی عنوان
شبیه سازی عددی فشار بالای چاه در حفاری زیر متعادل
کلمات کلیدی
سوراخ پایین زیر متعادل، سرعت کاهش گاز، مدل جریان لحظه ای دو فاز، حفاری زیر متعادل، فشار خون بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
Based on the application of liquid-phase under-balanced drilling in a vertical well, this paper studies the wellhead back pressure (WBP) on annular gas-liquid two-phase flow characteristics and its impact on the law of gas cut speed. Annular gas-liquid two-phase flow transient calculation model and a model of gas cut during drilling are established in this study. And used to calculate the changing law of WBP under constant and variable bottom hole underbalanced. Results show that a risk of excessive gas cut or WBP exists when uncovering gas reservoir under constant underbalanced. The WBP needed for using variable negative pressure to keep gas cut speed unchanged remains stable after a period of growth. And is mainly affected by gas cut speed, formation permeability, time to apply WBP, and other factors. The simulation result is compared with the WBP value collected on site in real time, show that the changing trend is roughly the same.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Procedia - Volume 107, February 2017, Pages 150-156
نویسندگان
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