A method of installing a plurality of casing sections in a well, the method comprising: providing a hanger supporting the casing sections that extend longitudinally in the well, the hanger comprising: a lower member having upwardly facing inverted V-shaped wedge surfaces (112c, 112d); an upper member having downwardly facing V-shaped wedge surfaces (110a, 110b); an intermediate member located between the upper member and the lower member, the intermediate member being composed of a first section and a second section, the first section (11 1 e) and the second section having upwardly facing V-shaped wedge surfaces (111a, 111b), and the first section and the second section having downwardly facing inverted V-shaped wedge surfaces (111c, 111d); a fastening means configured to hold the first and second sections; landing the hanger on a structure at a well head, whereby weight of the casing sections longitudinally compresses the hanger; cementing casing sections in position in the wall below the hanger; loosening the fastening means to enable lateral translation or expansion of the intermediate member to allow the upper member to move towards the lower member to provide for controlled longitudinal shortening of the hanger length, thereby removing exertion of casing sections weight on the hanger; and removing at least the upper member away from the well head; wherein said lateral translation or expansion is facilitated by sliding the upwardly facing V-shaped wedge surfaces (111a, 111b) of the first section and of the second section of the intermediate member relative to the downwardly facing V-shaped wedge surfaces (110a, 110b) of the upper member whilst simultaneously sliding the downwardly facing inverted V-shaped wedge surfaces (111c, 111d) of the first section and of the second section of the intermediate member relative to the upwardly facing inverted V-shaped wedge surfaces (112c, 112d) of the lower member. providing a hanger supporting the casing sections that extend longitudinally in the well, the hanger comprising: a lower member having upwardly facing inverted V-shaped wedge surfaces (112c, 112d); an upper member having downwardly facing V-shaped wedge surfaces (110a, 110b); an intermediate member located between the upper member and the lower member, the intermediate member being composed of a first section and a second section, the first section (11 1 e) and the second section having upwardly facing V-shaped wedge surfaces (111a, 111b), and the first section and the second section having downwardly facing inverted V-shaped wedge surfaces (111c, 111d); a fastening means configured to hold the first and second sections; a lower member having upwardly facing inverted V-shaped wedge surfaces (112c, 112d); an upper member having downwardly facing V-shaped wedge surfaces (110a, 110b); an intermediate member located between the upper member and the lower member, the intermediate member being composed of a first section and a second section, the first section (11 1 e) and the second section having upwardly facing V-shaped wedge surfaces (111a, 111b), and the first section and the second section having downwardly facing inverted V-shaped wedge surfaces (111c, 111d); a fastening means configured to hold the first and second sections; landing the hanger on a structure at a well head, whereby weight of the casing sections longitudinally compresses the hanger; cementing casing sections in position in the wall below the hanger; loosening the fastening means to enable lateral translation or expansion of the intermediate member to allow the upper member to move towards the lower member to provide for controlled longitudinal shortening of the hanger length, thereby removing exertion of casing sections weight on the hanger; and removing at least the upper member away from the well head; wherein said lateral translation or expansion is facilitated by sliding the upwardly facing V-shaped wedge surfaces (111a, 111b) of the first section and of the second section of the intermediate member relative to the downwardly facing V-shaped wedge surfaces (110a, 110b) of the upper member whilst simultaneously sliding the downwardly facing inverted V-shaped wedge surfaces (111c, 111d) of the first section and of the second section of the intermediate member relative to the upwardly facing inverted V-shaped wedge surfaces (112c, 112d) of the lower member.