关键词: 岩心录井, 密闭试验, 岩心编号, 油气级别, 岩心卡片

Abstract: At present, the domestic standards of drilling coring, sidewall coring and geological logging all involve some content of core logging and have certain guiding effect on the field core logging operation. However, with the advancement of unconventional oil and gas exploration and development, some problems such as unclear experimental parameters, imprecise division of hydrocarbon bearing grades, relatively backward core sorting method, and less information of core management, are also increasingly emerging. Revise the existing standards to address the problems. Therefore, the vevision suggestions proposed are as follows: the optimal parameter of the core air-tight test is determined by constant temperature timing as 60℃ constant temperature heating for 120 min; based on different reservoir properties, hydrocarbon bearing grades are finely divided, hydrocarbon bearing grades of the core of the shale reservoir are formulated; the core labeling principle is changed with printing instead of handwritten identification; and the core card is presented in the form of "QR code". These vevision suggestions are beneficial to improve the science of core logging observation test, reduce mud logging cost, increase efficiency, and promote the informational development of core logging.

Key words: core logging, air-tight test, core number, hydrocarbon grade, core card