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11.Discuss the following points.

  1. The most high-usage rigs.

  2. Foreign drilling rig classification advantages.

  3. Domestic drilling rig classification advantages.

  4. Disadvantages of both classifications.

  5. Modern tendencies in drilling rig development.

Rigging Up

Once the contractor gets the rig to the site, the next step is for the drilling crew to put the rig together, or rig up.

12. Put the following rig components and stages in right rigging up order.

Rig floor

Mast

Substructures

Derrick

Raising the mast or derrick

13. Read the following texts and match them with above-mentioned rig components and rigging up stages. Fill in the chart.

1.

This drilling rig part allows the crew to drill sev­eral wells right next to each other on the platform. Crew members can drill one well, shift the crown block and the rotary, drill another well, shift the crown block and the rotary again, drill still another well, and so on, until they have drilled up to nine wells.

2.

It can be of two types: box-on box and the self-elevating, or sling­shot.

4.

It is a framework that rests right over the hole. It raises the rig floor anywhere from about 10 to 40 feet (3 to 12 metres) above the ground. The exact height depends on the space needed to clear this equipment.

3.

One of the tallest drilling rig parts are about 200 feet, or 60 metres, high. The short­est are about 65 feet, or 20 metres, high.

6.

Some of them fold, telescope, or even come apart into sections to make them shorter and easier to move. Neverthe­less, they retain their integrity as a unitized component.

5.

An important piece of equipment that is drawworks is placed on this drilling rig part.

7.

Its capacities for vertical loads run from 0.25 million up to 1.5 million pounds (over 0.5 million to about 3 million kilograms). In some cases, the drill string alone may weigh as much as a half million pounds, or over one million kilograms.

8.

If the rig has a mast, it is done mainly with the help of drawworks. If the rig has a der­rick, crew members bolt it together, one piece at a time, on the substructure.

Rig component

Description

Function

Additional information

Part II. Rig Systems

A rotary rig's main job is to make hole. To make hole, the drilling crew places a bit on bottom, then the driller rotates it and pumps drilling mud to it. A rig needs a multitude of equipment to make these operations happen. A first look at all the gear on a drilling rig can over­whelm you. It is, however, easy to un­derstand a rig's components if you divide them into systems: power, hoist­ing, rotating, and circulating.

1. Power system

2. Hoisting system

Diesel engine 1 Drawworks

Diesel engine 2 Cathead

Diesel engine 3 Blocks and drilling lines

E

3. Rotating system

ting system

4. Circulating system

lectric motors

Swivel Drilling mud

Kelly Mud pits

Rotary table Mud pumps

Top drive Rotary hose

Drill pipe Return line

Drill bit Shale shaker

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