麦南构造T_1j_2~2段岩性为石灰岩、白云岩,岩性及厚度分布稳定,顶、底部有稳定的封隔层;储集岩的孔隙类型以孔隙型为主,裂缝型次之......

【正】Polyhalite generally formed in the early diagenetic stage.It is formed by the brine which rich in K+and Mg2+and ad......