(1. 中南大學 有色金屬成礦預測教育部重點實驗室，長沙 410083；
2. 中南大學 地球科學與信息物理學院，長沙 410083)
摘 要: 西藏措勤盆地油氣勘探潛力大，利用遙感解譯方法可以解決研究區(qū)高寒缺氧、交通不便以及常規(guī)油氣勘探方法成本高等問題。利用比值法、遙感波段融合法、羥基/鐵質異常提取法對措勤盆地異常信息進行提取和分析，并與油氣苗點和已知油氣藏對比。結果表明，羥基/鐵質異常提取法(主要分析手段是主成分法)包含的非油氣異常信息少，異常信息與油氣苗點吻合度高，是最佳的解譯方法。比值法提取的異常信息中包含較多的非油氣異常信息，因此油氣解譯結果不準確。遙感波段融合法解釋準確性介于兩者之間。通過遙感解譯預測出措勤盆地4個有利油氣勘探區(qū)域，其中3個與該區(qū)石油地質分析結果非常吻合。
關鍵字: 措勤盆地；瀝青點；油氣遙感解譯；有利油氣勘探區(qū)；影響因素
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China;
2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China）
Abstract:There is a great potential for petroleum exploration in Cuoqin basin, Tibet. The petroleum interpretation with remote sensing can solve such questions as cold, hypoxia, inconvenient traffic and high cost with conventional methods for petroleum exploration in study area. Surface anomalies are extracted and analyzed with comparative method, fuse method and hydroxyl and iron anomaly method in Cuoqin basin. Based on comparison, hydroxyl and iron anomaly method (main method is principal component method) is the best for remote sensing interpretation because there are few non-petroleum anomalies in interpretation result of principal component method. But there are lots of non-petroleum anomalies in interpretation result of comparative method, the interpretation result is inaccurate. The degree of interpretation accuracy with fuse method falls in between. Four favorable petroleum exploration areas can be put forward in Cuoqin basin through interpretation of remote sensing, and three areas of them coincide with petroleum geology data.
Key words: Cuoqin basin; pitch point; petroleum interpretation of remote sensing; favorable area for petroleum exploration; impact factors
