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Application filed by Halliburton Energy Services IncfiledCriticalHalliburton Energy Services Inc
Priority to MYPI2016701127ApriorityCriticalpatent/MY177600A/en
Priority claimed from PCT/US2013/073352external-prioritypatent/WO2015084374A1/en
Publication of MY177600ApublicationCriticalpatent/MY177600A/en
A directional casing-while-drilling system includes a rotary steerable system disposed within a casing string (50) used as a drill string during casing-while-drilling operations. The casing string (50) of some embodiments may include an upper section (52) and a lower section (53) coupled by a swivel (70), which may enable the upper section of the casing string to be rotated without substantially rotating the lower section. The rotary steerable system may be disposed at least partially within the lower section of the casing string, and coupled to a drill bit ( 111) and/or under-reamer ( 110). The rotary steerable system may enable radial diversion of the drill bit (111) and/or under-reamer (110), for example by actuation of one or more components in the rotary steerable system.
Downhole tool member containing reactive metal, downhole tool provided with downhole tool member containing degradable resin composition, and well drilling method
Method for downhole cutting of at least one line disposed outside and along a pipe string in a well, and without simultaneously severing the pipe string