Trican Frac School Power Point Flashcards
(28 cards)
What percent of wells fracked are vertical?
1%
Fractures grow ___________ until they no longer crack rock and then they grow _______ from the wellbore.
vertically, away
Frac is used to bypass what?
near wellbore damage or skin
Frac will contact a large part of the reservoir and ________ layers
connect
restrictions in the wellbore cause?
pressure loss and slow production
Name the 8 pieces of equipment on a frac site?
blender pumpers iron truck sand truck chemical addition unit data/frac van well head saver N2 pump
Blender?
- hub of frac operation
- takes base fluids from tanks
- blends chemical
- discharge gel/sand slurry to pumpers
Chemical addition unit?
- transports additives required to gel the fluid
- computer controlled rate
Pumper?
- high power pumps- 2,250 HP each
- Increase pressure of the slurry pumped from blender
- PDP
Hydration Unit?
- allows complete hydration of chemicals prior to blender
- high shear circulating pumps
Iron truck?
Hauls pipe required to connect pumpers to well
Sand truck?
transports proppant to location
Frac Van?
records and displays all info pertinent to frac (real-time data)
Nitrogen Pump?
takes Liquid Nitrogen, heats it and turns it into gas (for fracturing or other operations)
CO2 transport
stores and transports liquid co2 (low pressure discharge to fluid pumper).
Spearhead?
small volume of acid pumped ahead of frac fluid to break down perfs.
Pad?
The viscosified fluid that initiated the fracture and develops width for proppant.
Slurry?
The sand laden fluid
Flush?
fluid pumped to remove proppant from wellbore
Leak off?
during a treatment, the frac fluid leaks off into the formation
conductivity?
how easily the frac proppant pack allows flow back to the wellbore
Net pressure?
pressure needed to extend frac
Dead-leg?
static pressure from tubulars communicating to BHP
Initiation pressure?
Pressure required to initially crack rock
