Why we "case" a well?

a$.$ To prevent cave$-$in

b$.$ To create cave$-$in

c$.$ To seal$-$off formations

d$.$ To allow fluids enter the well in a controlled way

e$.$ All the above

The purpose of cementing the well is$?$

a$.$ To increase cost

b$.$ Safety issues

c$.$ To hold the casing in place

d$.$ All the above

e$.$ None of the above

The minimum casing length $($in $m)$ for range $2$ is$?$

a$.4\mathrm{.}88$

b$.7\mathrm{.}62$

c$.10\mathrm{.}36$

d$.14\mathrm{.}63$

How many casings are considered in the complete designing of a well?

a$.1$

b$.2$

c$.3$

d$.4$

e$.5$

The conductor casing is used to$?$

a$.$ Allow fresh water enter in the well

b$.$ Seal$-$off formations to avoid cave$-$in near surface

c$.$ Avoid drilling fluid interaction with underwater aquifer systems

d$.$ All the above

e$.$ None of the above

Intermediate casing is used for $?$

a$.$ Avoid fresh water entering in the well

b$.$ Fracture formations to establish communication between the well and the pay zone

c$.$ Seal$-$off formations troublesome zones to avoid cave$-$ins

d$.$ All the above

e$.$ None of the above

Production casing and production hole ranges $($in $mm)$ between?

a$.8-10$

b$.80-100$

c$.100-200$

d$.200-250$

Completions is the connection between drilling and production. Completions deal with?

a$.$ The type of downhole communication between the well and the reservoir

b$.$ The type of conduit in the well

c$.$ Avoid sand particles entering the well and the tube

d$.$ Hydraulic fracturing

e$.$ Matrix acidizing

f$.$ None of the above

Differential sticking is the problem where?

a$.$ Casing cannot turn in the well

b$.$ Drill string cannot turn in the well

c$.$ Drill string comes in contact with the wellbore walls

d$.$ Casing comes in contact with the wellbore walls

e$.$ All the above

A hopper is$?$

a$.$ The part of the mud circulation system to extract mud

b$.$ The part of the mud circulation system to insert mud

c$.$ The part of the mud circulation system to insert additives in the mud

d$.$ Create "pills"

e$.$ None of the above