Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

18 Questions

0 Views

Whipstocks in Multilateral Wells

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main purpose of a whipstock?

To extract oil from wells

To create new wells

To mill casing windows for sidetracking existing wells (correct)

To prevent drilling

What is the function of the chisel point at the bottom of a whipstock?

To extract oil

To guide the drill bit

To mill the casing

To prevent the tool from turning (correct)

How is a standard removable whipstock used?

To fill holes with cement

To remain permanently in the well

To kick off wells and for sidetracking (correct)

To extract oil from wells

What components are part of a drilling assembly used with a standard removable whipstock?

Bit, stabilizer, orientation sub Signup and view all the answers

How is the drilling bit directed in the required direction using a whipstock?

Weight is applied to shear the pin and allow the bit to slide down the shute Signup and view all the answers

In what year is the text discussing the use of whipstocks?

2024 Signup and view all the answers

What is the primary method of deflecting wells discussed in the text?

Jetting Signup and view all the answers

In jetting, what is considered the 'toolface'?

Large jet nozzle Signup and view all the answers

What is the purpose of the bent sub in downhole motors according to the text?

To orient the BHA Signup and view all the answers

What happens when drilling is carried out with no surface rotation to the drillstring with bent subs?

The wellbore is deflected Signup and view all the answers

Which component's degree of curvature largely determines the deflection of the drillbit?

Bent sub Signup and view all the answers

What replaced the bent sub in deflecting wells as per the text?

Steerable Motors Signup and view all the answers

What is the purpose of the bent housing angle in a steerable motor?

To tilt the axis of the bit relative to the axis of the hole Signup and view all the answers

How does a steerable motor function in the sliding mode?

Drillstring remains stationary while the drillbit is rotated Signup and view all the answers

Why are single shot surveys not accurate in orienting steerable motors?

Due to the high reactive torque produced by the motor Signup and view all the answers

What tool is usually run with steerable motor assemblies to provide real-time survey and orientation data?

Measurement while drilling (MWD) tool Signup and view all the answers

What effect does having only a small bit offset create in drilling operations?

Increases bit side force Signup and view all the answers

In rotary mode, what happens when a steerable motor is 'locked' with respect to trajectory?

The hole direction and inclination are maintained Signup and view all the answers