油气化探方法稳定性和异常重现性分析——以松辽盆地东南隆起区十屋断陷为例

METHOD STABILITY AND ANOMALY REPRIDUCIBILITY ANALYSIS IN SURFACE GEOCHEMICAL EXPLORATION FOR OIL AND GAS-A CASE STUDY OF THE SHIWU FAULT DEPRESSION IN SONGLIAO BASIN

姚俊梅 夏响华 任春

YAO Jun-mei XIA Xiang-hua REN Chun

中国石化股份公司, 石油勘探开发研究院, 化探研究所, 合肥, 230022

Research Institute of Petroleum Geochemical Exploration, RIPEP, SINOPEC, Hefei, Anhui 230022, China

根据松辽盆地东南隆起区十屋断陷已知油气田上方的重复实验结果,对酸解烃、热释烃、物上气、ΔC等方法的稳定性和异常重现性问题进行研究和探讨.研究结果表明,各项化探指标两次测量结果在含量上具有一定的稳定性,在空间分布上区域变化的相似性说明了化探指标异常区域具有可重现性特征.油气田上方各指标的中高值异常重现性高,背景区为较低的浓度值.

Based on the results of repetitive tests above the existing oil and gas fields in Shiwu fault depression in southeastern uplifted area in Songliao Basin,the method-stability of acid-digestion hydrocarbon,heat-release hydrocarbon,headspace gas and ΔC and reproducibility of the anomalies determined by these indicators are discussed.The results showed that the concentrations of the geochemical indicators in repetitive tests had stability to a certain extent.And in special distribution,the anomalous zones defined by the geochemical indicators in repetitive tests had reproducible features.The medium-value and high-value anomalies of the indicators had better reproducibility above oil and gas fields.The concentrations of the indicators in background areas were lower.

中国石化重点科研项目(P00012).

https://doi.org/10.11781/sysydz200306765