Casing hanger design and features
The main problems to be overcome in designing a reasonable well casing hanger are as follows: 1. The tendency of the hanger slips to crush 2. The tendency of the hanger gasket to crush the top section 3. The tendency of pressure-squeezed top section in annular space Each of these forces tends to narrow down the inner diameter of the tube, which is not serious. But combined, they can cause damage. Excellent casing hanger design can avoid the collapsing forces concentrating on the same part of the top section. The limited circular workspace causes a big problem to the design of the casing hanger . A larger height and diameter will enable the manufacturer to produce a larger load hanger. The equipment designed in the deep well must be in accordance with the size before the the drilling. Under the existing restriction conditions, put the heavier on the hanger. Casing hanger load capacity The strength of the outer casing and the load capacity of the casing head and hanger must b...