Well Completion Design Quiz

Study Notes

Well Completion Design

Well completion design involves designing a well to optimize hydrocarbon production.
Factors affecting well completion design include reservoir characteristics, completion equipment, and operational requirements.

Types of Well Completions

Open-hole (barefoot) completion: no casing or liner is used, allowing direct contact between the wellbore and the reservoir.
Predrilled or slotted liner completion: a liner with holes or slots allows fluid flow while maintaining wellbore stability.
Cased hole completion: a casing is used to line the wellbore, and perforations or slots are made to allow fluid flow.
Sand control completion: used in unconsolidated formations to prevent sand production.
Tubing completion: a tubing string is used to produce fluids from the wellbore.
Tubing completion with packer: a packer is used to isolate the production zone and prevent fluid flow behind the tubing.

Specialized Completions

Tubingless completion: no tubing string is used, and the well produces directly through the casing.
Dual completion: two separate production zones are completed simultaneously using multiple tubing strings.
Christmas tree: a wellhead assembly that connects the well to the surface production system.

Sand Production

Sand production occurs when unconsolidated formations are produced, leading to sand influx into the wellbore.
Factors affecting sand production include reservoir pressure, fluid velocity, and rock strength.
Types of sand production: fine grain production, clean-up or transient sand production, and continuous sand production.
Sand control mechanisms include gravel packs, screens, and inflow control devices.

Well Completion Design

Well completion design is a crucial aspect of production operations.
It involves designing and implementing a system to control the flow of fluids from the reservoir into the wellbore.

Types of Well Completions

Open-hole (barefoot) completion: a type of completion where the wellbore is not cased.
Cased hole completion: a type of completion where the wellbore is cased.
Predrilled or slotted liner completion: a type of completion that uses a liner with predrilled or slotted holes.
Sand control completion: a type of completion designed to prevent sand production.

Tubing Completions

Tubingless completion: a type of completion where no tubing is used.
Tubing completion without packer: a type of completion where tubing is used but no packer is installed.
Tubing completion with packer: a type of completion where tubing is used and a packer is installed.
Dual completion tubing: a type of completion where two strings of tubing are used.

Christmas Tree

A Christmas tree is a assembly of valves and fittings installed at the wellhead to control the flow of fluids from the well.

Sand Production

Sand production occurs when sand is produced along with the fluid from the reservoir.
Factors affecting sand production include: reservoir properties, fluid properties, completion design, and production conditions.
Types of sand production include: fine grain production, clean-up or transient sand production, and continuous sand production.

Sand Control Mechanism

Sand control mechanisms are designed to prevent sand production or to control the amount of sand produced.
Problems associated with sand production include: erosion, plugging, and sand disposal.

Description

This quiz covers the fundamentals of well completion design, including chapters 1 and 2 of the Heriot Watt Institute of Petroleum Engineering Manual and chapters 2 and 10 of Jonathan Ballerby's book. It's ideal for students of Iran University of Science and Technology and Production Operations.