Research And Application Of Multi-source Heterogeneous Drilling Information Integration Technology

In the drilling process,there is a large amount of heterogeneous information which contains rich contents and various forms.It has an important role in drilling operation management and decision and early warning of abnormal drilling.However,due to the storage location of these information is scattered,it also has diversified characteristics in storage format which formate the "information islands" and difficult to unified management.At the same time,information aggregation and other work also need manual intervention,greatly reducing the work efficiency.Therefore,it is necessary to design and implement a general system of drilling information integration which can shield the underlying information structure and realize the integrated storage and application of information.Based on the system research at home and abroad of multi-source heterogeneous drilling information,this dissertation researches and compares the existing information integration technology.Puts forward the method of using XML technology and ontology technology by combining multi-source heterogeneous drilling information integration.First of all,establish drilling domain global ontology knowledge and local ontology knowledge with XML technology and ontology technology.Ontology is used to explain the semantic information contained in the drilling information.Secondly describes the process of query processing in detail and proposes a method to calculate the similarity of ontology concepts based on tree structure.The algorithm simplifies the calculation process and improves the accuracy of information query.Then the system function design is carried out with the analysis of user requirements,and the architecture design and database design are completed.At last,a multi-source heterogeneous drilling information integration system(MHDIS)is developed and verified by an example.The results show that the system of this research can be seamless integration of multi-source heterogeneous drilling information,provide decision support for the drilling operation management and information support for early warning of abnormal drilling and improve work efficiency.