西安交通大学学报
西安交通大學學報
서안교통대학학보
JOURNAL OF XI'AN JIAOTONG UNIVERSITY
2009年
11期
104-108
,共5页
卜宪标%谭羽非%李炳熙%宋传亮
蔔憲標%譚羽非%李炳熙%宋傳亮
복헌표%담우비%리병희%송전량
盐穴储油库%地下油库%热交换%蠕变%渗透
鹽穴儲油庫%地下油庫%熱交換%蠕變%滲透
염혈저유고%지하유고%열교환%연변%삼투
cavern oil storage%underground oil storage%heat exchange%creep%permeation
为了确保盐穴储油库的密闭性和安全性,建立了油、卤水和围岩的热交换模型以及由于温度变化而引起的溶腔压力变化模型,同时建立了岩盐蠕变和渗透模型.通过TDMA算法对模型进行了求解,结果表明,油在7 a的放置过程中,温度升高了8.635℃,压力升高了8.97 MPa,即温度升高1℃压力约升高1 MPa.另外,盐穴的蠕变量随着放置时间的增加而减小.岩盐的渗透率很小,油的渗透量可以忽略.温度变化对溶腔压力有重要的影响,油和卤水的热膨胀系数与可压缩系数的比值决定了温度变化对压力的影响程度.在实际注油时,要准确测量油和卤水的可压缩系数和热膨胀系数,以便对溶腔内液体的温度和压力做出正确的预测和判断.
為瞭確保鹽穴儲油庫的密閉性和安全性,建立瞭油、滷水和圍巖的熱交換模型以及由于溫度變化而引起的溶腔壓力變化模型,同時建立瞭巖鹽蠕變和滲透模型.通過TDMA算法對模型進行瞭求解,結果錶明,油在7 a的放置過程中,溫度升高瞭8.635℃,壓力升高瞭8.97 MPa,即溫度升高1℃壓力約升高1 MPa.另外,鹽穴的蠕變量隨著放置時間的增加而減小.巖鹽的滲透率很小,油的滲透量可以忽略.溫度變化對溶腔壓力有重要的影響,油和滷水的熱膨脹繫數與可壓縮繫數的比值決定瞭溫度變化對壓力的影響程度.在實際註油時,要準確測量油和滷水的可壓縮繫數和熱膨脹繫數,以便對溶腔內液體的溫度和壓力做齣正確的預測和判斷.
위료학보염혈저유고적밀폐성화안전성,건립료유、서수화위암적열교환모형이급유우온도변화이인기적용강압력변화모형,동시건립료암염연변화삼투모형.통과TDMA산법대모형진행료구해,결과표명,유재7 a적방치과정중,온도승고료8.635℃,압력승고료8.97 MPa,즉온도승고1℃압력약승고1 MPa.령외,염혈적연변량수착방치시간적증가이감소.암염적삼투솔흔소,유적삼투량가이홀략.온도변화대용강압력유중요적영향,유화서수적열팽창계수여가압축계수적비치결정료온도변화대압력적영향정도.재실제주유시,요준학측량유화서수적가압축계수화열팽창계수,이편대용강내액체적온도화압력주출정학적예측화판단.
To ensure cavern tightness and safety, the models of heat transfer between oil, brine and surrounding rock, thermal pressurization rate, halite creep, and seepage were established and TDMA algorithm was adopted to solve them. The results suggest that the temperature and the pressure will increase by 8. 635℃ and 8.97 MPa in seven years storage process, respectively, i. e. , an approximate value of 1 MPa/℃. The creep rate will decrease with the increase in storage time, and the penetration could be neglected due to little penetrability. In addition, temperature will have significant influence on the cavern pressure and the influence will be determined by the ratio between the thermal expansion coefficient and the compressibility factor (α/β) of both oil and brine. It appears that the thermal expansion coefficient and the compressibility factor of both oil and brine should be measured precisely so that the liquid temperature and pressure in caverns can be predicted accurately.