Casing Hanger Calculation Pdf Pdf Casing Borehole Plasticity This document summarizes an engineering calculation to determine the casing slip hanging capacity for a 9 5 8" #47.0 l 80 casing. it defines relevant parameters such as annulus pressure, casing properties, and slip data. The mechanical analysis model of slip type casing hanger is established according to the specific size and operation process of casing head and casing hanger in the oil field.
Casing Design Pdf Pdf Casing Borehole Blowout Well Drilling This calculation was conducted in order to determine casing slip capacity. initial load comes from downhole pressure (p) uniformly distributed to casing and (pannulus) which act between outer side of casing and wellhead inner profile. Parameters like space restriction, higher pressure of the order of 15000 psi and casing loads up to 2 million lbf were considered to generate design concepts of the slip casing hanger and its test fixtures. Casing serves several important functions in drilling and completing a well: prevents collapse of the borehole during drilling prevents cave in of unconsolidated, weaker, near surface sediments protects the shallow, freshwater sands from contamination isolates the wellbore fluids from the subsurface formations and formation fluids provides a. The calculations of the ton miles for the operation of setting casing should be determined as for drill pipe, but with the buoyed weight of the casing being used, and with the result being multiplied by one half, because setting casing is a one way (1 2 round trip) operation.
Casing Design Pdf Casing Borehole Geotechnical Engineering Casing serves several important functions in drilling and completing a well: prevents collapse of the borehole during drilling prevents cave in of unconsolidated, weaker, near surface sediments protects the shallow, freshwater sands from contamination isolates the wellbore fluids from the subsurface formations and formation fluids provides a. The calculations of the ton miles for the operation of setting casing should be determined as for drill pipe, but with the buoyed weight of the casing being used, and with the result being multiplied by one half, because setting casing is a one way (1 2 round trip) operation. This abstract presents information to consider in the design of a safe and effective production casing string for well production and also as a conduit for a fracture stimulation. This approach is developed based on a pure elastic cased borehole model, which can include multiple cemented concentric casing strings that are surrounded by a homogeneous anisotropic medium. Design the casing to achieve minimum cost. ignore buoyancy effect on tension. ignore effect of tension on collapse. assume an injection pressure that is equivalent to 0.4 ppg greater than the fracture gradient and a safety factor of 1.15. To reduce the loss of diameter each time a new casing string or liner is set, a cold working process has been developed whereby the casing or liner can be expanded by up to 20% in diameter after being run down hole.
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