In C13,34 fault block of Ciyutuo oilfield,since the complex geologic condition of oil bed,and the high crude viscosity,the oil well contamination was serious.

• 茨榆坨油田茨13,34块边部油层地质状况复杂,原油粘度较高,油井污染问题日益突出,储量难以开发,严重束缚了区块发展。