基于常规孔渗定量预判束缚水饱和度合理值范围

Reasonable value estimation of irreducible water saturation by porosity and permeability characteristics

陈丹磬

Chen Danqing

中海石油（中国）有限公司天津分公司渤海石油研究院，天津 300452

Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300452, China

针对影响相渗参数的两大主控因素——流体性质及岩心物性，根据实验数据深入分析在相同油水黏度比值下束缚水饱和度随着岩心物性改变的变化规律。将渤海油田相渗实验所用岩心划分为稀油中高渗固结、稀油低渗/特低渗固结、稀油疏松、稠油疏松四大类，并建立各类岩心束缚水饱和度预判图版，以指导后续相渗实验数据的质量控制，并在已知常规孔渗数据的条件下，根据不同油水黏度比值的图版预判束缚水饱和度的合理值范围。目前该方法已应用于渤海油田。

in view of fluid property and petrophysics, the two main control factors of the relative permeability parameters, we established a set of application charts which show the rules how irreducible water saturation varies with petrophysics under the same oil/water viscosity ratio by experimental data. Four kinds of application charts were established by convention consolidated core of diluted oil, low permeability consolidated core of diluted oil, loose core of diluted oil and loose core of heavy oil, which could guide the quality control of relative permeability experiment data and estimate the range of reasonable value of irreducible water saturation. Now, this method has been applied to Bohai Oilfield.

10.6056/dkyqt201601017