This standard specifies the method for detecting formation pore pressure using dc index and acoustic time difference prediction in oil and gas vertical well drilling. This standard is applicable to the prediction and detection of formation pore pressure in exploration wells with sand and mudstone sequence profiles and early development wells in oil and gas fields.
SY/T 5623-1997 history
2009SY/T 5623-2009 Prediction and detection methods fo formation pressure
1997SY/T 5623-1997 Prediction and detection methods of formation pore pressure