摘要
模拟地层高温高压条件下岩石物性的测试技术是当今岩心分析领域的发展趋势。文章介绍了高温高压岩石气体孔隙度自动测试系统CPM．该系统是应用气体状态方程原理，可以在20℃（室温）至150℃的温度和1MPa至70MPa的围限压力条件下测试岩石的孔隙度。数据采集系统采用了计算机接口技术，不仅自动化程度高，而且测试精度也高，孔隙度误差一般小于0．3pu。大量实测岩心结果表明，岩石高温高压孔隙度小于常温常压孔隙度。孔隙度是刻度测井地质参数和储量计算的输入参数，必须在模拟地层条件下进行测试。
The measurement technology of petrophysic parameters under a simulated Hi - temperature and pressure formation envirornent is the currcnt trcnd in the field of core analysis. This paper discusscs a CPM system of automatic measuremeunt of porosity of rock under Hi - temperature and pressure envirorneut' Applying PVT equation, the system measures porosity of rock at the temperature from 20 tf (ambient ) to 150℃ and a prcssure range from 1 MPa to 20 MPa' This data acquisition systcm is hoth highly - automatic and accuratc dut. to its adoption of computer intcrface tcchni,lues. The crror of porosity is usually less than ±0. 3 pu' The results from a lot of practical corc tcsts show that porosity at conditioll of Hi - tempcrature and prcssure is less than that measured at normal condition. Porosity is input parameters for both formation evaluation with well - logging and reservation estimation. Thererore, the simulating in - sitc testings are necessary.
出处
《石油仪器》
1995年第2期79-85,共7页
Petroleum Instruments
