【作者】 董立全；

【导师】 向阳；

【作者基本信息】 成都理工大学 ， 油气田开发工程， 2005， 硕士

【摘要】 本文综合运用岩心分析、测井、生产及钻井等资料,对川西南部地区须二段气藏的储层物性下限进行了研究。 致密孔隙型储层物性下限研究,通过对气-水毛管压力,气-水相对渗透率,压汞等实验结果的研究,得出了储层岩石的含水饱和度上限,孔隙度和渗透率的下限。根据产气层段的测井定量解释成果,统计出了产气层段能产出工业气流的最小孔隙度及对应的含水饱和度,根据统计结果得出了测井解释的孔隙度下限和含水饱和度上限。 地层条件下致密砂岩储层下限研究,通过对氦气法孔隙度、全直径岩心孔隙度及围限压力孔隙度测定实验数据的统计,得到了地面孔隙度转换到地层条件下孔隙度的关系式,进而得出了地层条件下的孔隙度下限。 致密砂岩储层含气下限研究,利用最小含气喉道半径计算公式,基于天然气二次运移气驱水的原理,通过对气-水毛管压力测试资料的从新分析,做出了不同孔隙度下的气-水毛管压力与含水饱和度之间的关系曲线,由此得到了储层含气孔隙度下限和最小含气喉道半径下限。 致密砂岩储层产气下限研究,对典型气井的生产测井和常规测井解释成果对比分析,得到了孔隙型致密砂岩储层的孔隙度下限和含水饱和度上限。通过全岩心产能模拟试实验,在满足气井生产压差和有效厚度的前条件下,得到了孔隙型储层和裂缝型储层的产工业气流的孔隙度下限和渗透率下限。对气井生产资料分析和产层产气渗透率的计算,在满足气并不同生产压差,有效厚度及单井工业气流下限（1×10⁴m³/d）的条件下,得到了致密砂岩储层产气的最小渗透率下限和地层系数K·H(0.8×10^-3μm²·m)值的下限。 基于上述研究,得出了储层物性下限,可以作为该区须二气藏储量计算时的参考依据。更多还原

【Abstract】 By the use of the data of core testing, logging well.drilling well and production ,make a synthetical research on reservoir physics lower-bound of Second Zone Xujiahe Formation of South Gas reservoir of West of Sichuan.The studies of physics lower-bound of compact pore sandstone reservoir are as follows:By the use of the experimental date of the laboratory,such as gas-water capillarypressure.gas-water relative permeability,mercury-gas capillary pressure.and so on , achieving the upper-bound of the bondage water-saturation.the lower-bound of the porosity and permeability. .And then, by the use of the interpretative result of the the logging well,accounting the the lowest porosity and the correspondenced water-saturation in the pay formation.achieving the lower-bound of the logging well porosity and the upper-bound water-saturation.The studies of physics lower-bound of compact sandstone reservoir in the place are as follows:After Statisticing the experimental data of the helium gas porosity, kerosene porosity, porosity of the big diameter core and the small core.the porosity on the condition of the changed pressure.gaining a formula which can transform the surface porosity into the subsurface porosity.Oh the base of the result,achieving the lower-bound of the subsurface reservoir porosity The studies of gassy lower-bound of compact sandstone reservoir are as follows: By the use of calculation formula of the gassy pore-laryngic semidiameter, , analyzing the data of the gas-water capillarity pressure again on the base of the theory of the second migratation.And then,achieving the lowest gassy pore-laryngic semidiameter and the lower-bound of the porosity on the basis of the relation plan between the water-saturation and the capillarity pressure.The studies of productive gas lower-bound of compact sandstone reservoir are as follows: First,by the use of the interpretative result of the productive logging well and conventionallogging well, achieving the lower-bound of the logging well porosity and the upper-bound water saturation of the compact sandstone reservoir.Second.by the use of the experimental data of the productivity simulation , achieving the lower-bound of the porosity and the permeability of the pay formation.Third,by the use of the productive data of the gas well and the calculation of permeability of the gas quantity formula on the condition of pay formation, achieving the lower-bound of the permeability and the pay formation coefficient (KH=0.8 × 10-3μm2.m).At last ,on the base of the above conclusions,, gaining the lower-bound of the reservoir physical texture that maybe as a reference when calculating the gas reserves by the use of cubage formula.更多还原