Figure F84. Installation of the reentry cone and steel casing in Hole 1224D as observed on deep-source records. This figure is shown in five sections. It is extracted from the EPC graphic recording for the period 2118 to 2220 hr on 2 January. The traveltime interval shown is ~410 ms; the light horizontal traces are spaced at 100 ms. The heavier vertical traces are 5-min marks. The 14-s fluctuation with an amplitude of up to 4 ms in the traveltime of the direct water wave is primarily due to the heave of the ship pulling and slackening the vibration isolated television (VIT) cable. The 1- to 2-ms fluctuations in the traveltime for the reentry cone is a measure of the VIT heave plus the uncompensated heave of the drill string because the cone is rigidly linked to the ship's heave compensator by the drill string. CHRT = casing hanger running tool.

Figure F84. Installation of the reentry cone and steel casing in Hole 1224D as observed on deep-source records. This figure is shown in five sections. It is extracted from the EPC graphic recording for the period 2118 to 2220 hr on 2 January. The traveltime interval shown is ~410 ms; the light horizontal traces are spaced at 100 ms. The heavier vertical traces are 5-min marks. The 14-s fluctuation with an amplitude of up to 4 ms in the traveltime of the direct water wave is primarily due to the heave of the ship pulling and slackening the vibration isolated television (VIT) cable. The 1- to 2-ms fluctuations in the traveltime for the reentry cone is a measure of the VIT heave plus the uncompensated heave of the drill string because the cone is rigidly linked to the ship's heave compensator by the drill string. CHRT = casing hanger running tool.