Geo Energy And Drilling - Engineering Assignment Help

Assignment Task

Question 1

A well is to be drilled to a depth of 20,000 ft using a land rig. The effective weight of the drill pipe is 20 lbs/ft and that of the drill collar is 120 lbs/ft. The drill collar length is 1,000 ft, the hoisting system has 10 lines strung between traveling block and crown block, and the weight of travelling block (including hook, etc.) is 10,000 lbs.

Answer following questions and clearly explain your answer.

a) The driller had to trip out due to bit failure. Calculate the tension in the fast line and deadline when the drill bit is at 17,000 ft, and the drill string is hanging from the hook and is static?

b) Calculate the vertical load on the rig while pulling the string at 20,000 ft.

Question 3

Clearly describe the impacts of mud weight, solid contents, and mud type (oil or water based) on the performance of a PDC bit when drilling a formation with

a) High permeability/porosity

b) Low permeability/porosity

Question 4

Explain explicitly why a riser and divertor system is installed when drilling the 26” (surface) hole section of a subsea exploration well?

Question 5

List four major causes of kicks and clearly explain how each can result in a kick and how each of these problem scenarios can be avoided.

Question 6

Clearly describe 3 principal mechanisms used to lower a mud's solid content along with their advantages and disadvantages. Name 1 device/technique that is based on each mechanism.

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