OILFIELD WATER ION CHROMATOGRAPHIC ANALYSIS TECHNIQUE AND ITS APPLICATION IN OILFIELD DEVELOPMENT

A research on the oilfield water ion chromatographic analysis technique has been conducted in order to overcome the problems encountered in constant ion analysis of oilfield water by conventional chemical analysis method.The new technique has been applied into the oilfield water analysis in the Anpeng Oilfield of the Biyang Sag,and has provided liable analysis data for oilfield development.The results indicate that the reservoir condition of the Anpeng Oilfield is poor,the oilfield water is influenced significantly by the reservoir features,and the erosion effect of the injection water to the reservoir is strong.The characteristics of the oilfield water in the shallow-middle and the deeper parts of the Anpeng Oilfield in the Biyang Sag are obviously different,with the greater influence of the injection water in the deeper part.The closed area composed by the Bi 185-An 2108-An 65-An 27-An2029-Bi185 is a unified reservoir with good performance for oil and gas accumulation.So oilfield water ion chromatographic analysis technique has important significance in the research of the continuity of the reservoirs and the effect of injection development.