EP 2888446 A4 20160706 - COMMUNICATION USING A SPACER FLUID
Title (en)
COMMUNICATION USING A SPACER FLUID
Title (de)
KOMMUNIKATION UNTER VERWENDUNG EINER ABSTANDSFLÜSSIGKEIT
Title (fr)
COMMUNICATION À L'AIDE D'UN FLUIDE D'ESPACEMENT
Publication
Application
Priority
- US 201213664520 A 20121031
- US 2013067040 W 20131028
Abstract (en)
[origin: US2014118157A1] Disclosed are systems and methods for transmitting commands from a surface to downhole electronic equipment using pills of a spacer fluid. One method of communicating down a wellbore may include providing a flow of a first fluid along a flow path, introducing a series of one or more pills of a second fluid into the flow of the first fluid at a first point along the flow path, and detecting the series of one or more pills of the second fluid at a second point along the flow path, the second point being separated from the first point. In certain embodiments, a series of brine pills may be introduced into a flow of a drilling fluid.
IPC 8 full level
E21B 47/12 (2012.01); E21B 47/18 (2012.01)
CPC (source: EP US)
E21B 47/13 (2020.05 - US); E21B 47/138 (2020.05 - EP US)
Citation (search report)
- [X] DE 3503980 A1 19860904 - SCHOTTDORF BERND DR MED
- [XYI] WO 8804052 A1 19880602 - TECHNICON INSTR [US]
- [XYI] GB 2185569 A 19870722 - WESSEX INSTRUMENTATION LIMITED
- [A] US 6349766 B1 20020226 - BUSSEAR TERRY R [US], et al
- [A] US 6915848 B2 20050712 - THOMEER HUBERTUS V [US], et al
- See references of WO 2014070648A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2014118157 A1 20140501; AR 093251 A1 20150527; AU 2013338258 A1 20150402; AU 2013338258 B2 20160707; CA 2885864 A1 20140508; CA 2885864 C 20181030; EP 2888446 A1 20150701; EP 2888446 A4 20160706; WO 2014070648 A1 20140508
DOCDB simple family (application)
US 201213664520 A 20121031; AR P130103931 A 20131028; AU 2013338258 A 20131028; CA 2885864 A 20131028; EP 13850601 A 20131028; US 2013067040 W 20131028