冀东油田气测显示特征分析

Gas logging analysis for Jidong oil field.

冀东油田断块破碎，圈闭类型多，油、气、水分布状态复杂，以致在气测录井中，常常遇到气测显示（全烃）级别不能正确反映油气层含油气级别的问题。为此，根据实际试油结果，选择了一批低、中、高级别油气层，对比分析其气测录井、地质录井和试油资料，总结出可以用来判识测试层含油气级别的６种气测显示特征：①烃类组分有差异；②钻井液槽面显示不同；③气测后效反映的明显程度有别；④全烃峰的高度、宽度和形状各异；⑤气测显示三角图解的图形有差别；⑥地层含气量高低不等。图２表１（梁大新摘）

Jidong oil field is characterized by complex blocking, multiple trap types, and complicated distribution of oil, gas and water, so that a problem that gas logging record cannot reflect correctly the oil and gas content of an oil/gascontaining formation is occurred. Therefore, according to the actual production test data, a number of low, medium, and high grade oil/gas formations were selected to correlate and analyze the gas logging records, geologic logging records and production test data, and 6 gas logging characteristics are summarized for the identification of the grade of oil/gas content of the formation tested: difference in the hydrocarbon composition; difference in the oil and gas shows in returning drilling fluid; significant difference in postgas logging re5HZ