Study And Improvement On Pipe Conveyed Logging Operation Processes

Pipe Conveyed Logging (PCL) is a new technique that is used to perform horizontal,high deviation and difficult hole conditions well logging for exploration and development in oil field.This technique has been used to complete many logging works in oil field in china.Pipe conveyed logging operation processes is complex,which caused by conveyed tools,hole condition,hole depth,operation method,therefore,it has a lower logging success rate, and has took place many events.First, a great number of problems,event cases had been collected,and the causes were analysed.For the special requirements of complex, super deep,super long open hole horizontal wells logging,a number of study and improvement have been made on pipe conveyed logging process technique. conveyed tools improvement, operation method design improvement,logging experiments in field,logging operation processes design.The techniques about side-entry sub leave casing shoe logging,h igh deviation hole condition wet connectors contact,to prevent wet connectors blockage in long open-hole well,to prevent wet connector unlatching in logging,w ire-line safe protection,c ase pipe conveyed logging in minor size casing are explained in details.A large number of logging results to proved all improvement are success,pipe conveyed logging important operation method is expounded.In addition,PCL theorem is narrated, main tools and instruments structure and function are also analysed,explained Improved methods adapt to actual.O peration methods is concise and useful to operators.