|Publisher||Society of Petroleum Engineers||Language||English|
|Content Type||Conference Paper|
|Title||Well Control Simulator for IBM Personal Computer|
|Authors||Podio, A.L., Yang, A.-P., U. of Tulsa|
SPE/IADC Drilling Conference, 9-12 February 1986, Dallas, Texas
|Copyright||Copyright 1986, IADC/SPE 1986 Drilling Conference|
An advanced well control simulator has been developed for use on IBM-PC Microcomputers. Cove of the innovations introduced is the capability of interaction with the user through terminal input and output so as to easily follow the progress of the simulation and to easily modify the well parameters and configuration for repeated use in sensitivity analysis studies. Innovation in the numerical model principally stems from realistically accounting for the gas distribution in the well and consideration of the effects of wellbore geometry, gas migration, frictional losses, sub-sea BOPs and the presence of drilled cuttings and drilled gas. The response of the model is thus more realistic than other simulators, a result which is evidenced by the absence of the "dunce-cap casing pressure profile" which is typical of simplified simulators.
Well control is one of the most important aspects of drilling operations. Improper handling of kicks can result in blowouts with potential loss of life and equipment. Much attention has been given to kick control, resulting in widespread training of personnel, the development of strict operational guidelines and the design of drilling programs from the standpoint of maximizing the probability of successfully regaining hydrostatic control of a well after a significant influx of formation fluid has taken place. Computer simulation of kick control has become a valuable tool both in the training of personnel and in the analysis of veer designs for equipment adequacy and kick tolerance. The objective of this work was to develop a simulator for the complete process form before drilling into a permeable zone, through the generation and detection of a gas kick, through the kick killing operation until normal conditions are re-established. The simulator was developed so that it could be used with personal computers as well as large mainframe systems. Personal computer application would in principle favour more widespread use of the simulator principle favour more widespread use of the simulator by drilling engineers and supervisors. The numerical model used in the simulator was designed to be as general as possible within the constraints imposed by speed and capacity of the small computers. The model allows numerous geometric configurations for annulus and drill string, considers dynamic distribution of kick fluids, migration of gas, lost circulation, variable drilling rate, drilled solids and drilled gas, drill string movement, variable kill mud density, manual control of pump rate and choke position as well as fully automatic control of kick circulation.
|File Size||1,052 KB||13|