Resources Contact Us Home
Column structure enabling handling appliances on the seabed, particularly for the assembly and maintenance of well-heads

Image Number 4 for United States Patent #4119145.

The invention concerns the handling of appliances on the seabed, particularly for handling and maintaining well-heads and corresponding installations. For handling the well-heads, trolleys are mounted for travel along a column which is articulated to a base constructed on the seabed over a number of drilling wells. The trolleys are movable between the upper structure of the columns and the lower body part of the column coupled to the base, and carry well-heads or other devices between the upper structure and the base and release the same upon reaching the lower part of the column at a position above corresponding well orifices. Elongate vertical members or posts of the column have lateral walls constituting guide rails for the trolleys.

  Recently Added Patents
Electrowetting display devices with a reflective plate structure
Caching techniques
Gas cap removal tool
Power conversion device and method for controlling thereof
Substrate and patterning device for use in metrology, metrology method and device manufacturing method
Sensor packages and method of packaging dies of differing sizes
Image heating apparatus
  Randomly Featured Patents
Data processing device
Mounting for an electrical connection box
X-ray examination apparatus having an automatic positioning system for an imaging system
Diamond 2D scan for aligning an optical fiber to an optical output port
System and method for generating a device code download step sequence
Semiconductor device
7,10-Dimethyl-5,9-imino-4,5,8,9-tetrahydro-cyclooct[b]thiophenes and a process for obtaining it
CMOS image sensor unit with serial transmitting function
Process for producing silicide or silicon gates for an integrated circuit having elements of the gate-insulator-semiconductor type