Workover Operations Expert Systems Research

Unceasingly thorough along with our country petroleum natural gas resource prospecting development advancement, the development number of wells increases year by year, the work over job quantity and the technical difficulty enlarge unceasingly, causes the domestic work over job to have many problems, for example: work over job's capriciousness and blindness are big, the operation isn't in some standard, work over material and the work over tools has not carried on the unification in the classified management, the production runs into the expert which each kind of question lacks consult. At present, the key of the work over level is the scene technical personnel's experience and the ability. Because the accident frequency increase year by year in the oil well, but experienced expert and technical personnel are relatively insufficiency. Therefore, summarize experiences expert's knowledge and the technical method for each kind of accident, develops the expert system to instruct the scene work over job and help work over job technical personnel to complete each kind of work down hole, at the same time may be used into the training of wells technical personnel, improves the ordinary personnel's technical level in the short-term. This not only can increase the success ratio of work over job, but also may reduce the work over job period and cost, has the significant practical significance to dealing with oil field work over job accident. Therefore, the research and development work over job expert system has the big market prospect and will create big economic efficiency for oil field.The work over job software is a few in the domestic and foreign, moreover the function is very imperfect, along with the investment of work over job and exploration new technology, these soft wares have not been able to meet the scene needs. This paper, in the domestic and foreign existing research results foundation, has completed following several aspects work:(1) Has investigated and studied the present situation in our country workover jobs and the question the workover jobs exists, proposed to develope workover job expert system to solve the problem which at present exists, has systematically proven the workover job expert system development necessity, and analyzed the domestic and foreign correlations domain research present situation.(2) Has analyzed and studied the expert system structure, the composition and various modules performance history, and determined to use the Object-Oriented technology to complete the workover expert system the development mentality, using production knowledge expressed way carried on the expert system knowledge base design and the development. Uses the belt conflict to dispel is carrying on the expert system reasonging mechanism to the reasonging method the design and the development, has completed the expert system explanation...