primary cementation
University Of Petroleum and Energy Studies
Dehradun
Minor Project
“PRIMARY CEMENTATION”
Under the guidance of
Dr. D.K Gupta
Professor and HOD
Department of Petroleum and Earth Sciences Engineering
Submitted by:
Vikrant Lakhanpal R820210025 ___________________
Nimish Tandon R820210038 Signature: Dr. D.K Gupta
Rishabh Jain R820210017
Udit Datta R820210032
Model description:
The model consists of an outer cylinder representing the casing. Inside the casing is a pipe of smaller diameter which represents the drill string. To the lower end of this pipe (drill string) is attached a non return valve (a simple rubber diaphragm in this case). Now the cement slurry is pumped through the drill string followed by buffer solution. The hydrostatic head provided by drilling fluid after buffer solution in real time is transformed by a manually weighted piston which pushes the cement into the drill string and then enforces it to move through the annulus. The non return valve helps for only one way movement of pumped cement slurry. Replica of various equipments actually used in the industry is used:
Guide Shoe
Float Collar
Centralizer
Bottom Plug/Wiper Plug
Top Plug/Shut Off Plug
Non return valve (NRV)
Three pistons are used in place of mechanical pumps in the model. The first piston contains water, used to wash the well i.e the spacer fluid. Second piston contains cement (colored blue water in this case). Third piston contains displacing fluid, used to displace fluid until shut off plug lands on float collar.
The Drill String:
Operational Procedure:
1. Fill piston one with water. Close P2 and P3, open P1. Inject the fluid. The water will enter the casing after passing through the drill string. Thus, the well is washed.
Dehradun
Minor Project
“PRIMARY CEMENTATION”
Under the guidance of
Dr. D.K Gupta
Professor and HOD
Department of Petroleum and Earth Sciences Engineering
Submitted by:
Vikrant Lakhanpal R820210025 ___________________
Nimish Tandon R820210038 Signature: Dr. D.K Gupta
Rishabh Jain R820210017
Udit Datta R820210032
Model description:
The model consists of an outer cylinder representing the casing. Inside the casing is a pipe of smaller diameter which represents the drill string. To the lower end of this pipe (drill string) is attached a non return valve (a simple rubber diaphragm in this case). Now the cement slurry is pumped through the drill string followed by buffer solution. The hydrostatic head provided by drilling fluid after buffer solution in real time is transformed by a manually weighted piston which pushes the cement into the drill string and then enforces it to move through the annulus. The non return valve helps for only one way movement of pumped cement slurry. Replica of various equipments actually used in the industry is used:
Guide Shoe
Float Collar
Centralizer
Bottom Plug/Wiper Plug
Top Plug/Shut Off Plug
Non return valve (NRV)
Three pistons are used in place of mechanical pumps in the model. The first piston contains water, used to wash the well i.e the spacer fluid. Second piston contains cement (colored blue water in this case). Third piston contains displacing fluid, used to displace fluid until shut off plug lands on float collar.
The Drill String:
Operational Procedure:
1. Fill piston one with water. Close P2 and P3, open P1. Inject the fluid. The water will enter the casing after passing through the drill string. Thus, the well is washed.