油藏物理学一地层水的高压物性 classification by valent weight ratio of basic ion Na <1 Na* Na <1 >1 Na CI >1 CI- CI- C CI-Na">1 CI-Na* <1 Na'-CI> Na'-CI<1 M82+ g2+ S0 2+ S02 CaCh MgCL NaHCO Na2SO gas field water seawater oil field water ground water油藏物理学——地层水的高压物性 classification by valent weight ratio of basic ion gas field water seawater oil field water ground water 1   Cl Na  1   Cl Na  1   Cl Na  1   Cl Na 1 2      Mg Cl Na 1 2      Mg Cl Na 1 2 4      SO Na Cl 1 2 4      SO Na Cl CaCl2 MgCl2 NaHCO3 Na2 SO4