TAML4 Multilateral Well Completion Technical Solution And Related Tools Research

Multilateral is a well with two or more boreholes drilled from a main bore,which can increase productivity of oil and gas wells,reduce development cost,and improve EOR.This article revolves around the problem of the most useful TAML4 multilateral well completion technology to research.Around optimize process,develop multilateral tools to shape the TAML4 multilateral well completion optimization technology of more easy to operate and more reliable.First,inquiry TAML4 multilateral well completion technology of Baker,Weathford,Schlumberger and CNPC Drilling Research Institute,comparison of their technical characteristics,find the best way to design technical solution about downhole orientation,recover whipstrock,building upperlateral support,selective re-entry.Then,put them into a complete TAML4 multilateral well completion program.Around the program design the Orientation Hanger to realize automatic orientation function,the whipstrock to realize mill recover function,the Junction Tool and Pre-open window Hanger to realize upperlateral support and the Re-entry Tool to realize selective re-entry function.Create a experiment on multilateral technology program and tools,the result proved the indicators of tools meet the requirements of multilateral technology program.Then,create a field experiment on well-AZ-XXX,tools in downhole automatic orientation accurately,whipstrock to be recovered by mill shoe and lock block,build the upperlateral support system successful,re-entry to both upperlateral and lowerlateral,finally,AZ-XXX construction complete and four times more than the other well’s productivity.TAML4 multilateral well completion program and tools pass the test,achieve the desired effect,proved them reasonable and advanced.