石油勘探与开发
石油勘探與開髮
석유감탐여개발
PETROLEUM EXPLORATION AND DEVELOPMENT
2001年
1期
33-35
,共3页
邓荣敬%柴公权%杨桦%鲁凤婷%王金荣%朱薇
鄧榮敬%柴公權%楊樺%魯鳳婷%王金榮%硃薇
산영경%시공권%양화%로봉정%왕금영%주미
实验室%高温%高压%测定%天然气%扩散系数%地层温度%校正%方法
實驗室%高溫%高壓%測定%天然氣%擴散繫數%地層溫度%校正%方法
실험실%고온%고압%측정%천연기%확산계수%지층온도%교정%방법
自行组装了两套可控温型天然气扩散系数测定仪，可以测定高温、高压条件下岩石的天然气扩散系数，能较好地模拟地层条件，比以往国内外常温、常压或较高温度、压力的测量仪前进了一步。利用该仪器分别测定了天然气通过10块干岩样和饱和水岩样的天然气扩散系数，并应用费克定律的积分式及气体范德华方程，将实测天然气扩散系数转换为饱和介质条件下的天然气扩散系数，转换系数为6.09。利用斯托克斯-爱因斯坦方程对实测天然气扩散系数进行了温度校正，校正后地层条件下的天然气扩散系数均小于实测天然气扩散系数，且随着埋深增加，二者之间的差值逐渐减小，其原因是地温随着埋深增加而升高，天然气分子运动速度加快，表明这一校正结果是符合地层条件的。图1表2参5 (李海燕摘)
自行組裝瞭兩套可控溫型天然氣擴散繫數測定儀，可以測定高溫、高壓條件下巖石的天然氣擴散繫數，能較好地模擬地層條件，比以往國內外常溫、常壓或較高溫度、壓力的測量儀前進瞭一步。利用該儀器分彆測定瞭天然氣通過10塊榦巖樣和飽和水巖樣的天然氣擴散繫數，併應用費剋定律的積分式及氣體範德華方程，將實測天然氣擴散繫數轉換為飽和介質條件下的天然氣擴散繫數，轉換繫數為6.09。利用斯託剋斯-愛因斯坦方程對實測天然氣擴散繫數進行瞭溫度校正，校正後地層條件下的天然氣擴散繫數均小于實測天然氣擴散繫數，且隨著埋深增加，二者之間的差值逐漸減小，其原因是地溫隨著埋深增加而升高，天然氣分子運動速度加快，錶明這一校正結果是符閤地層條件的。圖1錶2參5 (李海燕摘)
자행조장료량투가공온형천연기확산계수측정의，가이측정고온、고압조건하암석적천연기확산계수，능교호지모의지층조건，비이왕국내외상온、상압혹교고온도、압력적측량의전진료일보。이용해의기분별측정료천연기통과10괴간암양화포화수암양적천연기확산계수，병응용비극정률적적분식급기체범덕화방정，장실측천연기확산계수전환위포화개질조건하적천연기확산계수，전환계수위6.09。이용사탁극사-애인사탄방정대실측천연기확산계수진행료온도교정，교정후지층조건하적천연기확산계수균소우실측천연기확산계수，차수착매심증가，이자지간적차치축점감소，기원인시지온수착매심증가이승고，천연기분자운동속도가쾌，표명저일교정결과시부합지층조건적。도1표2삼5 (리해연적)
Two sets of measuring instrument of controllable temperature type are fitted, which can be used for measuring the diffusion coefficient under high temperature and high pressure. They are much better in simulating the natural gas diffusion of strata condition than the traditional types, which can only measure the common temperature and pressure. Applying the instruments established, the diffusion coefficiens of natural gas of ten rock samples of dry condition and water-saturated condition are measured respectively. Therefore,6.09, the conversion coefficient of saturation medium of measured diffusion coefficient is determined using Fick regulation and van der Waals equation. Moreover, the temperature correction of measured diffusion coefficient is obtained applying the Stocks-Einstein equation. The diffusion coefficients after the correction are all less than the measured ones, and the differential values become less with the increase of depth, which indicates that the molecules of natural gas get more active with temperature increases. This conclusion can well illustrate that the correction result fits the strata condition.
