Research On Managed Pressure Drilling Implementation Based On Case Based Reasoning

Managed pressure drilling(MPD)is an adaptive drilling process to control the annular pressure profile of the well precisely.The MPD technology include constant bottom hole pressure drilling(CBHP),mud map drilling(MMD),and dual-gradient drilling(DGD).The key to realizing the MPD is how to choose the appropriate MPD technology for different geological characteristics.It is the basic factor to constantly affect the MPD not to be fully implemented.This paper proposes a brand-new method of MPD lectotype based on case-based reasoning.Through research,try to develop a MPD evaluation method which has good applicability and reliable prediction results.The prediction MPD method based on case-based reasoning can easily realize.This article puts forward a method of MPD lectotype based on case-based reasoning.Firstly,choose a large number of the successful MPD applications as the source database.Then,develop the MPD lectotype model based on the case-based reasoning theory.It can be used for the different formations of three block of Jilin oilfield to study on MPD lectotype.Finally,draw concrete calculation results,and evaluate the lectotype results.The MPD lectotype method based on the case-based reasoning makes drilling engineering and case-based reasoning integrate well.The method is a very meaningful attempt to solve the uncertainty in the drilling field.Also,it makes the application of the case-based reasoning better and provides a brand-new research method to analyze the MPD adaptability.The MPD lectotype has significant meaning in the academic study and engineering applications.