Abstract: Under the background of the rapid development of offshore drilling technology, a new stage of optimal and rapid drilling project has been implemented in Kenli A Block in Bohai Oilfield. The implementation of the project not only puts forward higher requirements for rapid decision-making during drilling construction, but also brings new development opportunities for digital and intelligent drilling construction. Through comprehensive project research and technical analysis, the remote and efficient decision support system is constructed, and the key auxiliary decision support technology adapted to the rapid drilling in Bohai Oilfield is established. The application practice of 28 wells shows that this technology can be well adapted to the rapid drilling in Bohai Oilfield, and it is also more accurate for the decision control of the key link of speed increase. So it is well worth wide promotion.