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四川盆地经过几十的勘探，、开发已成为重要的天然气工业基地，碳酸盐岩地层为主要油、气产层。在四川山区针对碳酸盐岩储层开展地震勘探取得丰富成果，但也面临诸多技术难点。将其归纳为五点：（１）碳酸盐岩出露区地震资料采集难；（２）薄碳酸岩地层及波阻抗差微弱的储层界面反射成像难；（３）碳酸盐碉储层横向预测难；（４）特殊油气储集体预测难；（５）碳酸盐岩储层含油、气、水判别难。文章分析了这些难点形成的原因；提出了

A DISCUSSION ON THE TECHNICAL DIFFICULTIES AND COUNTERMEASURES TO CARRY OUT SEISMIC EXPLORATION IN THE CARBONATE ROCK AREAS OF SICHUAN BASIN

??Sichuan Basin has become an important natural gas industry base through an exploration and development for few tens of years and the major oil- and gas-producing strata are composed of carbonate rocks.By carrying out mountainous area seismic exploration for carbonate reservoirs in Sichuan Basin,abundant achievements have been obtained and many difficulties have been encountered also.These difficulties may be summarized as the following five aspects:??being difficult of seismic data acquisition in exposed carbonate rock areas;??being difficult of imaging by reflection at the interfaces of thin carbonate formations and the reservoir beds with little wave impedance differences;??being difficult of laterally forecasting the change of carbonate reservoir beds;??being difficult of forecasting special reservoir bodies;and ?? being difficult of distinguishing the oil-,gas-and water-bearing layers in carbonate reservoirs.In the paper,the reasons of forming these difficulties are analyzed;some thoughts of solving these technical difficulties are proposed;and the relevant theoretic research,deepening high-steep structures exploration and field data acquisition,seismic data processing techniques,the development,application and popularization of new techniques and new methods,a synthetic application of multiple disciplines and multiple techniques and enhancing exploration success ratio,etc.,are discussed.