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姬塬地区是长庆油田的一个重要产区,主要生产层位是延长组的长3、长4+5、长6段,随着勘探的不断深入,延长组下组合(长7、长8、长9段)的勘探逐渐得到重视。从该地区延长组下组合储集层原油伴生气和气测烃组分的特征分析入手,通过多口井众多油层与水层气测录井总烃、烃组分以及派生参数及其曲线特征的研究与分析,形成了以反映重组分的派生参数曲线(W_h、B_(H-L)、B_(H-M))与反映轻组分的派生参数曲线(B_h、B_(L-H)、B_(L-M))变化趋势特征和烃组分C_3与C_2含量大小比较为主、以总烃峰基比和烃组分展布形态为辅的油层与水层解释方法,解决了延长组下组合储集层解释评价难的问题。2014年的应用表明,解释符合率为75.5%,较2011-2013年67.3%的解释符合率有显著提高。
The Jiyuan area is an important producing area of Changqing Oilfield. The main production layers are Chang 3, Chang 4 + 5 and Chang 6 of the Yanchang Formation. With the deepening of exploration, the extension of the lower combination (Chang 7, Chang 8 , Long 9) exploration gradually get attention. Beginning with the characterization of the extended hydrocarbon associated gas and hydrocarbon measuring components of the lower reservoir in this area, by measuring the total hydrocarbon, hydrocarbon components, derived parameters and their curve characteristics of many oil and gas reservoir wells in multiple wells (B_h, B_ (HL), B_ (LM)) and derivative parameters (B_h, B_ (LH) and B_ (LM)) that reflect the light components Trend characteristics and hydrocarbon components C_3 and C_2 content of the size of more than total hydrocarbon peak base ratio and hydrocarbon component distribution morphology of the oil and water layer interpretation method to solve the Yanchang interpretation of the lower reservoir combination is difficult to evaluate The problem. The application in 2014 showed that the interpretation coincidence rate was 75.5%, which was significantly higher than the 67.3% interpretation consistency rate in 2011-2013.