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di ceng ya li po mian jian li de zhi neng hua ji suan ji ruan jian xi tong
Pages: 31-33+39-5
Year: Issue:  4
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  drilling engineeringformation pressureprofileartificial intelligenceexpert systemcomputer application;
Abstract: In order to realize balanced pressure drilling, design reasonable wellbore construction, assure wellbore stability in the processing of drilling, and raise comprehensive economic efficency of drilling, it is essential to accurately establish the formation pore, fracture and caving pressure gradients. The intelligence computer software system introduced in this paper, after processing the data obtained from well logging, logging, seismic log, formation leakage testing or/and laboratory testing of rock property, can establish the formation pore pressure gradients with DC-index method, sonic interval transit time method or/and seismic velocity method; the formation fracture and caving pressure gradients can be established by applying the advanced caculation pattern in the world. According to the reliability analysis of original data and the fitting analysis of measured data, the software system can also determine the comprehensive formation pore, fracture and caving pressure gradients. It consists of the general control system,the pieces of inputting of data, computing and arranging of data, complementing of data, establishing of the pressure gradients of wells which are under design,regressing of data, inquiring of data and inquiring of graphs, and auxiliary system. Its basic construction, principle, function, and realizing method are introduced as stress.
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