Research And Application Of Mobile Transaction Processing For Well Completion Business

Well completion,that is,completing oil and gas wells,is an important production link that connects the two production links of drilling engineering and oil extraction engineering.As a vital component of oilfield production capacity construction,its cycle starts from drilling operation and ends up with production operation.The efficiency and quality of well completion business directly affect the output of oilfields and whether the future oil extraction work can be carried out smoothly,which would be directly related to the economic benefits of oilfield development.The establishment of the well completion operating information mobile service platforms based on intelligent mobile devices enables staff members to handle official business anytime and anywhere,improving the efficiency of oilfield information management.In view of the frequent disconnection,limited resources,asymmetric network communication and other features in the well completion business mobile environment,carrying out research on the mobile transaction processing of well completion business is of great significance to enhancing the transaction processing performance of mobile completion business and increasing the efficiency of well completion information management.Because most of well completion business is conducted in the wild,and the wild mobile computing environment is characterised by frequent disconnection,limited resources and network communication asymmetry,inefficient transaction processing is resulted in.In the light of this problem,the main research contents of this paper are the mobile transaction processing for well completion business and they are as follows:An optimistic concurrency control protocol based on the read-write timestamp of well completion.Due to the limitation of the mobile computing environment,when a transaction is processed,the well completion operating information mobile service platform is less efficient than that in the traditional environment while carrying out concurrency control.However,the mobile computing environment cannot be changed.Therefore,as regards this problem,in order to improve the efficiency of the well completion operating information mobile service platform while carrying out concurrency control,according to the feature of most of the data of the well completion operating information mobile service platform-read-more and write-less with fewer conflicts,the optimistic concurrency control protocol is taken;the timestamp is introduced;and improvement is made on the basic optimistic concurrency control protocol.A mobile transaction processing model based on well completion weight self-adaptation.Owing to the existence of a small part of hotspot data in well completion business,if the improved optimistic concurrency control protocol is applied while processing this part of transactions,the low efficiency problem is easily caused by plenty of rollback transactions when there is much concurrency.Aiming at this problem and in combination of the improved optimistic concurrency control protocol,a mobile transaction processing model based on weight self-adaptation is proposed.In accordance with the mobile computing environment of well completion and the situation of the data accessed by well completion business,the model automatically selects the corresponding strategies of processing mobile transactions by mean of weights.Applying the mobile transaction processing studied in this paper to the well completion operating information mobile service platform of the Third Oil Extraction Plant and performing tests by using the mobile computing environment in the oilfield site verify the practicability of algorithms,improve the performance of the system and save network bandwidth,which have remarkable significance for both improving the efficiency of oilfield information management and promoting oilfield production capacity.