Genetic analysis and evaluation of low resistivity reservoir in block S
Online published: 2011-04-20
Agreat deal of lowresistivity reservoirs are discovered in block S. The lowest resistivity of the reservoir is only 1.7Ω·m, corresponding to the resistivity ofwater layer, which makes it extremely difficult to recognize the property of the fluid. Based on scanning electronic microscope, claymineral analysis, capillary pressure and formation water property, the genetic mechanism of the lowresistivity in block S is analyzed. It is believed that the lowresistivity is mainly caused by highly mineralized formation brines and lowoil saturation. An evaluation method for lowresistivity reservoirs of different genesis is proposed, which combines apparent formation water resistivity and movable fluid analysis. The actual processing data of 36 wells prove the good result.
Key words: horizontal well; wetting transition; water shutoff; water cut
OUYANG Chuanxiang , ZUO Chenxiao , ZHANG Zhijun , YUAN Hailong . Genetic analysis and evaluation of low resistivity reservoir in block S[J]. Lithologic Reservoirs, 2011 , 23(2) : 105 -108 . DOI: 10.3969/j.issn.1673-8926.2011.02.020
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