物探与化探2016，Vol.40Issue(4)：705-712,8.DOI:10.11720/wtyht.2016.4.11
地表化探异常立体解释模型的建立及其意义--以库车坳陷米斯布拉克地区为例
Establishment of three-dimensional interpretation model for surface geochemical anomaly:A case study of Meath Braque area in Kuqa Depression
摘要
Abstract
In the past, the interpretation of oil and gas geochemical anomaly was primarily carried out by two⁃dimensional interpretation of plane and profile, which is difficult to accurately reflect the relationship between geochemical anomaly and subsurface oil and gas distribution. Taking oil and gas geochemical exploration in Meath Braque area of Kuqa Depression as an example and guided by vertical migration theory of oil and gas, the authors established a three⁃dimensional model for interpretation of geochemical anomaly ( comprising three⁃dimensional model of geology, transportation space, abnormal pressure and geochemical anomaly) on the basis of the study of sedimentary⁃tectonic evolution, hydrocarbon generation evolution, oil and gas migration characteristics and abnormal distribution law. It directly reflects the oil and gas vertical migration, power source, migration space and migration pathway, and systematically explains the formation process of surface geochemical anomaly and its relationship with underground oil and gas in Meath Braque area. It is found that convergent migration of oil and gas caused by the bulge fracture surface leads to anomaly intensification, and divergent migration of oil and gas caused by the concave facture fracture surface results in anomaly weakening. Overall, the three⁃dimensional interpretation model for geochemical anomaly has achieved good results in Meath Braque area and it effectively improves certainty and accuracy of the geochemical anomaly interpretation.关键词
化探异常立体解释/输导空间模型/异常压力模型/三维地质建模/米斯布拉克地区Key words
three-dimensional interpretation of geochemical anomalies/model of transportation space/model of abnormal pressure/there-dimensional geological model/Meath Braque areas分类
天文与地球科学引用本文复制引用
林玉祥,马小伟,朱传真,宋喜林,米晓利,张岗..地表化探异常立体解释模型的建立及其意义--以库车坳陷米斯布拉克地区为例[J].物探与化探,2016,40(4):705-712,8.基金项目
国家自然科学基金面上项目（41172108）；中国石油科技攻关项目 （）
