Experimental and Statistical Study on Wellbore Scaling Mechanisms and Characteristics for Huanjiang Oilfield

Table 1

Water sample analysis results by payzones.

Payzone	Average depth (m)	Water type	Average salinity (mg/L)	pH
Yan 9	1975	CaCl2	19306	6.8
Yan 10	2070	CaCl2	28054	7.0
Chang	2276	CaCl2	33929	6.1
Chang 6	2465	CaCl2	43745	6.0
Chang 8	2611	CaCl2	55338	6.3
Groundwater	1200	Na2SO4	12789	6.6