Systems and methods for detecting drillstring loads
Номер патента: EP2855826A2
Опубликовано: 08-04-2015
Автор(ы): Mark Sherman, Raghu Madhavan
Принадлежит: IntelliServ International Holding Ltd Cayman Island
Опубликовано: 08-04-2015
Автор(ы): Mark Sherman, Raghu Madhavan
Принадлежит: IntelliServ International Holding Ltd Cayman Island
Реферат: A drilling system comprises a drillstring including a dill bit, a bottomhole assembly coupled to the drill bit, and a plurality of interconnected tubular members coupled to the bottomhole assembly. A first tubular member includes a communication link having a first annular inductive coupler element disposed in an annular recess in a first end, a second annular inductive coupler element disposed in an annular recess in a second end, and a cable coupling the first annular inductive coupler element to the second annular inductive coupler element. In addition, the drilling system comprises a first signal level determination unit disposed in the drillstring and configured to determine a level of a first signal communicated from the second inductive coupler element. Further, the drilling system comprises an axial load determination unit configured to determine an axial load at the first signal level determination unit based on the level of the first signal.
Method and system for detection of fluid invasion in an annular space of flexible pipe
Номер патента: US09400227B2. Автор: Rogerio Tadeu Ramos,Stephen Kimminau. Владелец: Schlumberger Technology Corp. Дата публикации: 2016-07-26.