کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
507098 865094 2016 8 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
EQUILGAS: Program to estimate temperatures and in situ two-phase conditions in geothermal reservoirs using three combined FT-HSH gas equilibria models ☆
ترجمه فارسی عنوان
EQUILGAS: برنامه ای برای برآورد دما و شرایط دو مرحله ای در محل در مخازن زمین گرمایی با استفاده از سه مدل تعادل گاز ترکیب FT-HSH
کلمات کلیدی
تعادل گاز؛ مخازن زمین گرمایی؛ دمای مخزن؛ شرایط دو فازی
Gas equilibria; Geothermal reservoirs; Reservoir temperatures; Two-phase conditions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی


• Geothermal reservoirs assessment needs temperature and steam quality estimations.
• FT-HSH gas-mineral equilibrium models allow reliable reservoir estimations.
• EQUILGAS program provides temperatures and steam fractions from gas compositions.

Exploration and exploitation of geothermal resources require the estimation of important physical characteristics of reservoirs including temperatures, pressures and in situ two-phase conditions, in order to evaluate possible uses and/or investigate changes due to exploitation. As at relatively high temperatures (>150 °C) reservoir fluids usually attain chemical equilibrium in contact with hot rocks, different models based on the chemistry of fluids have been developed that allow deep conditions to be estimated. Currently either in water-dominated or steam-dominated reservoirs the chemistry of steam has been useful for working out reservoir conditions. In this context, three methods based on the Fischer–Tropsch (FT) and combined H2S–H2 (HSH) mineral-gas reactions have been developed for estimating temperatures and the quality of the in situ two-phase mixture prevailing in the reservoir. For these methods the mineral buffers considered to be controlling H2S–H2 composition of fluids are as follows. The pyrite-magnetite buffer (FT-HSH1); the pyrite-hematite buffer (FT-HSH2) and the pyrite-pyrrhotite buffer (FT-HSH3). Currently from such models the estimations of both, temperature and steam fraction in the two-phase fluid are obtained graphically by using a blank diagram with a background theoretical solution as reference. Thus large errors are involved since the isotherms are highly nonlinear functions while reservoir steam fractions are taken from a logarithmic scale. In order to facilitate the use of the three FT-HSH methods and minimize visual interpolation errors, the EQUILGAS program that numerically solves the equations of the FT-HSH methods was developed. In this work the FT-HSH methods and the EQUILGAS program are described. Illustrative examples for Mexican fields are also given in order to help the users in deciding which method could be more suitable for every specific data set.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Geosciences - Volume 88, March 2016, Pages 1–8
نویسندگان
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