Fluctuation pressure is the main cause that destroys the balance of well pressure and that results in well blowout,leakage,collapse and other complex accidents.

• 波动压力是破坏井眼压力平衡系统导致井喷、井漏、井塌及其他复杂情况的重要原因,其预测及应用在钻井工程中占有重要地位。