Institut Francais Du Pe'trole

Michel Tholance

Jacques Lessi

Jean-Paul Michel

A process and device for hydraulically and selectively controlling, in two circulation directions, at least two tools or instruments connected to a casing located inside a well. A first hydraulic line is provided which includes branches to a first and a second of the two tools or instruments, with a distribution arrangement being adapted to modify a circulation of fluid in each of the branches and to enable an independent control, and with a hydraulic power generator being connected to the first hydraulic line. To selectively activate the first tool or instrument, the distribution arrangement of the second tool or instrument are shut off in order to reduce fluid circulation in the branch of the second tool or instrument, the distribution arrangement of the first tool or instrument are opened in order to increase fluid circulation of the branch of the first tool or instrument, and pressure is applied in the first hydraulic line in order to create a flow of fluid in the first direction in the branch of the first tool or instrument.

Process and device for hydraulically and selectively controlling at

A method and device for actuating specialized equipment in a drilled well having at least one well zone, sharply slanted with respect to the vertical, and with the drilled well having at least one tubular control column along which operating equipment as remotely installed. A control member is introduced in to the first tubular control column, with a cable being attached at one end of the control member. The control member is lowered into the first tubular control column by a downward hydraulic pumping, and the cable is paid into the tubular pipe from the surface. The control member is raised by pulling on the cable from the surface and the specialized operating equipment is selectively maneuvered while the control member is flush against the equipment in a downward or upward travel of the control member in the drilled well.

Growing community of inventors

Feucherolles, France

Michel Tholance