Rig Objectives

Question 0

Explain the 36” moon pool operations

Answer 0

Install the slope indicator and ball valves if needed. Calibrate the slope indicator.

Question 1

Explain open water operations in detail. Include 36”, 26”/28”, 22”, 16”/18” receptacles

Answer 1

• run 36” conductor pipe and housing. Make up ball valves and slope indicator in the moon pool, then jet in. Allow soak time
• release DAT with 5 right hand turns to put in drill ahead mode
• drill out for 26”/28” casing then pull up DAT
• run 26”/28” casing and housing, cement that in, then release the tool and pull it up
• drill out for 22” section
• run the high pressure wellhead and 22” casing with 18” and 16” receptacles inline then cement that in
• set the rigid lock seal assembly with the ROV panel and rigid lock setting tool. If the ROV panel fails then use the dart sub or ball valve sub as back up.
• release the wellhead running tool and pull up
• run the BOP stack and riser and latch up to the wellhead for BOP testing
• open water operations are complete,

Question 2

How is the total number of 36” joints to be installed determined?

Answer 2

It’s determined by the formation and water table

Question 3

What are the typical wall thicknesses of 36” pipe? Are all the 36” joints in a conductor string the same?

Answer 3

The thickness is determined by the weight and grade of the pipe. As long as the threads match they can be used together. The most common are 1”, 1 1/2”, and 2”

Question 4

How is the BHA length determined for the jet in process?

Answer 4

It is determined by the length of the conductor pipe. Placing the bit about 6” below the shoe is optimal

Question 5

Explain the jetting in process in detail

Answer 5

The bit is spaced out close to the shoe. Fluid is pumped down the drill string and through the mud motor which causes the bit to rotate jetting the formation up and out of the way. This allows the conductor string to sink under it’s own weight into the sea bed. After you reach full depth the string is held in place while the formation settles back in around it

Question 6

What is meant by soak time?

Answer 6

After jetting in soak time is required to allow the formation to settle back in around the pipe locking it in place

Question 7

What is the maximum angle that a conductor housing can be at and how is it determined?

Answer 7

1 degree or less and it’s determined by the slope indicator

Question 8

Explain why the 26”/28” conductor housing must be run whether you run the 26”/28” casing or not

Answer 8

The 26”/28” housing is what the wellhead lands in and must be run

Question 9

Explain the difference between the UWD-15 16” and 18” large bore Submudline hangers and receptacles. How can you tell the difference by looking at them?

Answer 9

The 18” receptacle has the jewelry for the hanger to lock into while the 16” hanger has the jewelry on it. This is so that the 18” hanger can pass through the 16” receptacle without getting hung up on anything

Question 10

Explain the difference between BHA and inner string

Answer 10

Bottom hole assembly is everything from the bit to the drill pipe. It consists of the bit, sub, mud motor, stabilizer, drill collar, heavy weight drill pipe, jars, and crossovers. Inner string is the drill pipe that is run inside of the casing below the running tool

Question 11

Explain what set weight down means and how it is accomplished

Answer 11

It means to put the drill string in compression by setting weight down against resistance at land out

Question 12

Explain what over pull means and how it is accomplished

Answer 12

It means to put the drill string in tension by pulling up against resistance

Question 13

What is neutral weight and how is it calculated? Why is this number critical when running FMC equipment?

Answer 13

Neutral weight is the weight of landing string, inner string, tools and equipment that will be pulled up once the tool is released. It is critical so they you can find the neutral floating weight of our tool so that it can be functioned without any resistance or in a bind

Question 14

How do you determine the weight of the block?

Answer 14

Look at the weight indicator when it is not supporting anything. The driller will have that number also

Question 15

Explain what a vanier is and what it is used for

Answer 15

It is a separate weight indicator that can be zeroed out at any time. It can be used to see how much weight is being pulled up it set down from a specific reading

Question 16

Describe the 3 common types of motion compensation systems and what they are used for

Answer 16

The compensator is an air over hydraulic system that is mounted either in the crown if the derrick, or between the hook and top drive. The compensation system allows the driller to apply a constant and steady amount of weight or over pull while the rig is heaving due to sea conditions

The 3 types are active heave draw-works, hook mounted compensator, and crown mounted compensator

Question 17

Explain what an index line is and how we use them

Answer 17

It is a line of wire or rope that is tied off at the slip joint. As the rig moves up and down with the sea the index line gives a hard reference to the wellhead to give the rig accurate land out measurements

Question 18

How do you determine which elevators are used to pick up an FMC tool with pup or lifting sub installed?

Answer 18

You measure what is being lifted to make sure you have the right size elevators and inserts installed

Question 19

How is the type of landing string determined? Is landing string and drill string the same thing?

Answer 19

Landing string is determined by the weight of your casing string. Landing string is usually heavy walled drill pipe used for landing heavy casing strings. Drill string can be used if it is rated high enough for the casing string

Question 20

What is the difference between regular and heavyweight drill pipe? How can you tell by looking?

Answer 20

Heavyweight drill pipe has longer tool joints and is usually spiraled. Regular drill pipe has a slick finish to it

Question 21

Define and describe a drill collar and a pony collar.

Answer 21

Drill collars are thick walled tubing used to hold the drill string in tension and provide weight for the bit. Spiral drill collars reduce the friction of the pipe and help keep the pipe from getting stuck. A pony collar is a drill collar that is shorter than 30’

Question 22

How is line pull torque figured for rig tongs?

Answer 22

Desired torque divided by the length of the tongs gives the target line pull

Question 23

Describe the different components that make up the rotary table bushings and the ID of each

Answer 23

Inner bushings - 13 5/8” and lower
Master bushings - 19.5” to 37.5”
Drive ring - 37.5” to 49.5”
Split ring - 49.5” to 60.5”