238000011144 upstream manufacturing Methods 0.000 description 3. 230000005540 biological transmission Effects 0.000 description 4. 230000001276 controlling effect Effects 0.000 claims description 8. 239000012530 fluid Substances 0.000 claims abstract description 51. Assignors: PETERS, VOLKER, HAHN, DETLEF, ROUATBI, CEDRIC, SCHOLZ, ECKARD Publication of US20050260089A1 publication Critical patent/US20050260089A1/en Application granted granted Critical Publication of US7417920B2 publication Critical patent/US7417920B2/en Status Active legal-status Critical Current Adjusted expiration legal-status Critical Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US27534201P priority Critical Priority to US10/096,451 priority patent/US6898150B2/en Application filed by Baker Hughes Inc filed Critical Baker Hughes Inc Priority to US11/136,147 priority patent/US7417920B2/en Assigned to BAKER HUGHES INCORPORATED reassignment BAKER HUGHES INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Baker Hughes Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Detlef Hahn Volker Peters Cedric Rouatbi Eckard Scholz Current Assignee (The listed assignees may be inaccurate. 
Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US11/136,147 Other versions US20050260089A1
#Carrier command 2 sonic pulse generator pdf#
Google Patents Reciprocating pulser for mud pulse telemetryĭownload PDF Info Publication number US7417920B2 US7417920B2 US11/136,147 US13614705A US7417920B2 US 7417920 B2 US7417920 B2 US 7417920B2 US 13614705 A US13614705 A US 13614705A US 7417920 B2 US7417920 B2 US 7417920B2 Authority US United States Prior art keywords pulser reciprocating motor pressure pulses reciprocating member Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7417920B2 - Reciprocating pulser for mud pulse telemetry US7417920B2 - Reciprocating pulser for mud pulse telemetry
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