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确定储油气层岩石的物性参数是油气田勘探与开发中的一个重要问题，而岩心分析是获得储层岩石资料的一种基本手段。对于低渗透致密岩石的物性参数，由于流体流动速率很小，采用常规的岩心分析方法难以测量和解释。为测定岩心物性参数，在瞬时脉冲技术基础上，通过测试岩石样品两端的压力变化，提出了自动拟合岩石样品两端实测压力的模型及其数值解法,研制了岩心物性参数解释软件，配合实验装置，实现了岩心分析实验数据的自动采集与解释。由于实验是通过测量岩样上、下流压力随时间的变化而不需要测量流量来测定岩心物性参数，从而避免了用常规方法测量致密岩石时的困难，同时在高压下测定的岩心物性参数更接近于矿场实际。最后，通过例子说明了实验简单易行，方法稳定可靠，结果准确，具有推广应用价值。

New Method of Measuring Core Physical Parameters

It is an important problem in oil and gas field exploration and development to determine the physical parameters o f reservoir rocks,and core analysis is a basic way of obtaining reservoir rock d ata.Owing to a small fluid flowing rate,it is difficult to measure and interpret the physical parameters of low permeability tight rocks by use of conventional core analysis method.For this reason,on the basis of instantaneous impulse techn ology,a model of automatically fitting the measured pressures at both ends of th e rock sample and ist numerical solution method were proposed through measuring the pressure change at both ends of the rock sample;the software of interpreting core physical parameters was developed;and the automatic acquisition and interp retation of core analysis data were realized in cooperation with experimental de vice.Because the determination of the core physical parameters can be realized o nly through measuring the pressure change with the time at the upflow and downfl ow ends of the rock sample but not through measuring the flow rate,the difficult y of measuring tight rocks by use of the conventional method may be avioded and the core physical parameters measured at high pressure are more approaching to t he field practice.Finally,through studying an example it is indicated that the e xperiment is simple and feasible,its method stable and reliable and its result a ccurate,thus being of great value to popularizing and applying.