Abstract:
Bozhong 19-6 large condensate gas field is the largest natural gas field discovered in Bohai Bay basin so far, with reserves of more than 100 billion cubic meters. Most well depth in this block exceed 5000 meters, and the well temperature generally reaches above 180 ℃. It is difficult to get full logging data because high-temperature equipment is lacking and the setting temperature of conventional instruments is only 175 ℃. This makes logging operations face great challenges. This paper presents a new method of using conventional temperature instrument tools to obtain logging data of high temperature wells. This method changes the traditional cable up measurement mode, using the method of down measurement by optimizing the combination of instrument strings, reducing influencing time of high temperature on the instrument, making it possible to complete data collection before logging tools reach limiting conditions for operation. Aiming to get full and accurate logging data, this paper also illustrates the corresponding depth correction method. This method is applied effectively in Bozhong 19-6 gas field, and has a good reference for high temperature deep well operation.