Well Completion
NoDoC Model for well completion is a system that includes drilling-in reservoir, well cementing, well completing, and putting the well into production.
The basis of well completion is a theory composed of the parts in reservoir geology, reservoir engineering, and petroleum production, which are related to well completion.
The NoDoC assembly for well completion have two parts:
- Reservoir geology and engineering,
- Petroleum production.
The reservoir geology and reservoir engineering include types, configuration, lithology, fluid properties, pore configuration, and fluid flow characteristics of oil and gas reservoirs, which are the theoretical grounds for selecting well completion mode and avoiding formation damage.
The petroleum production part includes the requirements of different types of wells (such as oil well, gas well, water injection well, gas injection well, steam injection well, and horizontal well), production modes (such as multizone commingled production in a well, separate zone production, artificial lift after flowing production, and production with steam treatment), and technical measures necessary during oil and gas field development (such as fracturing, acidizing, sand control, water shutoff, and gas well dewatering and gas production) for well completion mode selection, casing size and strength selections, cement slurry return height and high-temperature resistance of cement, and life prolongation of production and injection wells, etc.
Main phases that in the NoDoC assembly have been considered are:
- Checking and Conditioning the borehole,
- Remedial cementing,
- Re -establishing pay zone - borehole communication,
- Well testing,
- Treating the pay zone,
- Equipment installation,
- Putting the well on stream and assessing performance,
- Moving the rig,
- Operation to be performed at a later date:
- Measurements,
- Maintenance,
- Workover,
- Abandonment.
The basis of well completion is a theory composed of the parts in reservoir geology, reservoir engineering, and petroleum production, which are related to well completion.
The NoDoC assembly for well completion have two parts:
- Reservoir geology and engineering,
- Petroleum production.
The reservoir geology and reservoir engineering include types, configuration, lithology, fluid properties, pore configuration, and fluid flow characteristics of oil and gas reservoirs, which are the theoretical grounds for selecting well completion mode and avoiding formation damage.
The petroleum production part includes the requirements of different types of wells (such as oil well, gas well, water injection well, gas injection well, steam injection well, and horizontal well), production modes (such as multizone commingled production in a well, separate zone production, artificial lift after flowing production, and production with steam treatment), and technical measures necessary during oil and gas field development (such as fracturing, acidizing, sand control, water shutoff, and gas well dewatering and gas production) for well completion mode selection, casing size and strength selections, cement slurry return height and high-temperature resistance of cement, and life prolongation of production and injection wells, etc.
Main phases that in the NoDoC assembly have been considered are:
- Checking and Conditioning the borehole,
- Remedial cementing,
- Re -establishing pay zone - borehole communication,
- Well testing,
- Treating the pay zone,
- Equipment installation,
- Putting the well on stream and assessing performance,
- Moving the rig,
- Operation to be performed at a later date:
- Measurements,
- Maintenance,
- Workover,
- Abandonment.
