Well Completion Design Quiz

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.