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姜恩承,王敬农,孙宝佃,曾花秀.电化学测井理论研究及其应用的新进展.测井技术,1999,23(4):258~263我国陆相沉积的油气田储层粘土含量较重,其阳离子交换量QV对测井响应,尤其是对电化学测井响应及其解释影响较大。油田注水开发油层水淹后,地层水电阻率Rw变化不定,成为水淹层评价中的难题。QV和Rw均为地层电化学参数,最好的办法是用电化学测井方法求解它们。文中论述了粘土对电化学测井响应影响的机理,在此基础上推导了自然电位和激发极化电位测井响应方程,给出了进行地层阳离子量校正的自然电位和激发极化电位理论模型及定量求解地层水矿化度(地层水电阻率)、地层阳离子交换量和含油饱和度的模型与解释方法,提高了测井解释精度,为石油勘探和油田开发中水淹层评价、确定水淹层剩余油饱和度提供较为准确的地质资料。
Jiang Encheng, Wang Jingnong, Sun Bao Dian, had spent show. Research on Electrochemical Logging Theory and Its New Development. Well Logging Technology, 1999,23 (4): 258 ~ 263 The clay content in the terrestrial sedimentary oil-gas fields in our country is heavy. The cation exchange capacity (QV) has a great influence on the well logging response, especially on the electrochemical logging response and its interpretation Big. After water flooding in oilfield development, the formation water resistivity (Rw) fluctuates indefinitely, making it a difficult problem in the evaluation of flooded layers. QV and Rw are the formation electrochemical parameters, the best way is to use electrochemical logging method to solve them. In this paper, the mechanism of the influence of clay on the electrochemical logging response is discussed. Based on this, the response equations of natural potential and induced polarization potential well logging are deduced. The theoretical models of natural potential and induced polarization potential for formation cation correction And quantitatively solving the model and interpretation method of formation water salinity (formation water resistivity), formation cation exchange capacity and oil saturation to improve logging interpretation accuracy, evaluate water flooded layers in oil exploration and oilfield development, and determine water The residual oil saturation in the flooded layer provides more accurate geological data.