NUMBER POSITION/LEVEL TASK DESCRIPTION

1 Move Supervisor In charge of operation

1 Tool pusher Assigns individual responsibilities; is jacking console operator 1 Driller Maintains proper clearances and communication with console

operator

1 Rig Engineer Assigns Electrician, Mechanic, and Motorman responsibilities and stands by to assist

1 Electrician Stands by below deck to take action to correct any electrical malfunction

1 Mechanic Stands by below deck to take action to correct any mechanical malfunction

1 Welder Assures that welding equipment is in good condition and that welding supplies are on board

1 Derrick man

2 Motorman

Three men assigned to each yoke house

6 Roughnecks or

Roustabouts

2.2 JACKING DOWN OPERATION

1. Switch fixed pins to “OUT” on all columns.

2. Lower yokes (raise platform) slightly with master jacking lever, monitoring rod end pressure gauges and “FIXED PIN OUT” light on all columns. If rod end pressure reaches 2500 psi on columns 1, 2, or 3 before the red “FIXED PIN OUT” light on any of those columns comes

on, stop jacking until the fixed pin (or pins) which may be stuck is disengaged. Confirmation of the pin situation from each column should be obtained with every pin change before proceeding with the jack-ing. This information should be obtained by telephone from personnel in each jack house.

3. When all fixed pins are confirmed to be “OUT,” use the master jacking lever to raise the yokes (lower the platform) in unison one full, six-foot stroke. During the stroke, the aluminum wedges can be removed.

NOTE : The automatic leveling device incorporated within the jacking system should keep

the three yokes in line to: 1 inch relative to column 1 during the power stroke. During the power stroke and when about 10 inches from the end of the stroke, switch all the fixed pins to the “IN” position on the console and continue jacking in the same direction. These pins will not move all the way in immediately as they are not centered over the respective pin holes, but the “FIXED PIN OUT” lights will go off and the pins will be loaded up against the columns ready to go into the column pin holes as soon as they become aligned. As the end of the stroke nears, watch both the “FIXED PIN IN” lights and the rod-end pressure gauges for all three columns. The green “FIXED PIN IN” lights, indicating that all fixed pins are in, should come on before rod end pressure starts to decrease. If there is an indication of pressure decrease before a green light activates on any one column, jacking should be stopped until the cause of the problem can be determined (such as a stuck fixed pin, a maladjusted limit switch, etc.).

4. When all fixed pins are “IN” and confirmed, switch yoke pins to “OUT” position on the console, and use the master jacking lever to raise the yokes (transfer the platform load to the fixed pins), allowing the yoke pins to disengage themselves from the columns. Confirm yoke pin disengagement and then push the master jacking lever to the “YOKES DOWN” position for the return stroke (six feet). Switch yoke pins back to the “IN” position, again, about six inches before the end of the return stroke, and continue jacking until all yoke pins are “IN” as before and confirmed.

5. Repeat steps 2, 3, and 4 as required to bring the platform down to the water. Before the platform enters the water, a platform weight summary and platform longitudinal center of gravity (LCG) calculations are to be made. This is required for determining the amount of drilling water to be shifted in the platform in order to obtain even keel conditions when the mat is free and the unit floating. The method for adjusting the platform LCG to coincide with the floating longitudinal center of buoyancy (LCB) will normally be by shifting drilling water only. If feasible for the particular drilling unit and location, the derrick skid unit may also be moved to expedite the adjusting of the LCG. Continue jacking down until platform draft exceeds the calculated floating draft by two feet. With this amount of excess buoyancy, the mat should free itself from the sea bottom, as can be observed by a decrease in platform draft and head end pressure on all three columns. If difficulty is encountered and the mat will not pull loose with two feet excess draft, provisions have been made for water to be jetted from the underside of the mat. The piping for this system terminates in column 1. 6. Using the same action it took to lower the platform, raise the mat the desired clearance

(bottom to bottom) for the move. If it is desired to raise the mat up to the uppermost position (2’6" clearance between the molded platform bottom and mat deck), override the automatic shutdown at columns 2 and 3. This is accomplished by holding the override button down in the lower left corner of the console before the end of the last 4’6" stroke is reached.

7. When sufficient clearance between the bottom of the mat and sea bottom exists, pressure up the rod ends of all cylinders (lower the yokes) with both the fixed pins and the yoke pins engaged and the yoke down to about 1500 psi. This will prevent relative movement between mat and platform due to wave action. If after a period of time the pressure decreases in the rod end of the cylinders, they can be repressured to 1500 psi.