地下水
地下水
지하수
Underground Water
2015年
5期
19-21
,共3页
地热温标%水-岩平衡%方解石%白云石%饱和指数
地熱溫標%水-巖平衡%方解石%白雲石%飽和指數
지열온표%수-암평형%방해석%백운석%포화지수
Geothermometer%water-rock equilibrium%calcite%dolomite and saturation index
地球化学地热温标在地热资源勘查与评价中具有广泛的应用前景,国内外地热工作者推导总结了一系列用于估算热储温度的地热温标,其中二氧化硅地热温标、钾镁地热温标及钾钠地热温标最具代表性。基于地球化学地热温标的水-岩平衡应用原理,认为华北平原区馆陶组热储中见有次生的方解石、白云石矿物,可采用方解石与白云石的饱和指数反推热储温度。并采用PHREEQC软件,通过实例验证方解石与白云石饱和指数地热温标的可靠性。分析认为,热储温度应低于白云石估算温度,而接近并略高于方解石估算温度。
地毬化學地熱溫標在地熱資源勘查與評價中具有廣汎的應用前景,國內外地熱工作者推導總結瞭一繫列用于估算熱儲溫度的地熱溫標,其中二氧化硅地熱溫標、鉀鎂地熱溫標及鉀鈉地熱溫標最具代錶性。基于地毬化學地熱溫標的水-巖平衡應用原理,認為華北平原區館陶組熱儲中見有次生的方解石、白雲石礦物,可採用方解石與白雲石的飽和指數反推熱儲溫度。併採用PHREEQC軟件,通過實例驗證方解石與白雲石飽和指數地熱溫標的可靠性。分析認為,熱儲溫度應低于白雲石估算溫度,而接近併略高于方解石估算溫度。
지구화학지열온표재지열자원감사여평개중구유엄범적응용전경,국내외지열공작자추도총결료일계렬용우고산열저온도적지열온표,기중이양화규지열온표、갑미지열온표급갑납지열온표최구대표성。기우지구화학지열온표적수-암평형응용원리,인위화북평원구관도조열저중견유차생적방해석、백운석광물,가채용방해석여백운석적포화지수반추열저온도。병채용PHREEQC연건,통과실례험증방해석여백운석포화지수지열온표적가고성。분석인위,열저온도응저우백운석고산온도,이접근병략고우방해석고산온도。
Geochemical geothermometer has extensive application prospect in geothermal resource exploration and evaluation. Geothermal researchers have derived and summarized a series of geothermometers in which silica geothermometer, K-Mg geother-mometer and K-Na geothermometer are most representative used to estimate the thermal reservoir temperature. There are secondary mineral of calcite, dolomite at Guantao thermal reservoir in the North China Plain . Therefore the author thinks the saturation index of calcite and dolomite can be used backstepping the thermal reservoir temperature based on the geochemical geothermometer water-rock balance principle. And by using the PHREEQC software, the author conducted real examples of calcite saturation index geo-thermometer to verify its reliability. It is coming to the dicision that the temperature of geothermal reservoir should be under the dol-omite equilibrium temperature and close to or slightly higher than the calcite equilibrium temperature.