WELL CONTROL SYSTEM

Question 1

is defined as the pressure at which a fluid or gas exists in the pores of a permeable rock. This is also called pore pressure.

Answer 1

Formation Pressure

Question 2

followed by loss of fluid, also defined as

Answer 2

Formation breakdown pressure.

Question 2

The amount of pressure a formation can withstand before the formation breaks down as a fracture is initiated, followed by loss of fluid, also defined as Formation breakdown pressure.

Answer 2

Fracture Pressure

Question 3

is achieved by ensuring that the mud hydrostatic pressure overcomes formation pore pressures.
To maintain primary well control, the well should always be filled with mud with a density within the mud window.

Answer 3

Primary Well Control

Question 3

The amount of pressure the formation can withstand before the formation accepts any fluids.

Answer 3

Leak-Off Pressure

Question 3

A combination of one or more Well Barrier Elements that together constitute a method of containment of fluids within a well that prevents uncontrolled flow of fluids into another formation, or, to escape at surface

Answer 3

Well Barrier Envelope

Question 3

is achieved by using valves to prevent the flow of fluid from the well until such time as the well can be made safe.

Answer 3

Secondary Well Control

Question 4

Prevents uncontrolled influx of formation fluid into the well i.e., kick

Answer 4

Well Control System

Question 4

A flow of formation fluids into the wellbore during drilling operations. The kick is physically caused by the pressure in

Answer 4

Kick

Question 5

2 kinds of BOP

Answer 5

Land Rig BOP Stack
Floating Rig BOP Stack

Question 5

Two basic types of BOPs

Answer 5

Annular Preventor
Ram Preventor

Question 6

designed to seal off the annulus between the drillstring and the side of hole

Answer 6

Annular Preventor

Question 7

may also seal off open hole if kick occurs while the pipe is out of the hole

Answer 7

Annular Preventor

Question 7

made of synthetic rubber which, when expanded, will seal off the cavity

Answer 7

Annular Preventor

Question 8

The ability to seal on a variety of pipe sizes is one advantage the annular blowout preventer has over the ram blowout preventer.

Answer 8

Annular Preventor

Question 9

Designed to seal off the annulus by ramming large rubberfaced blocks of steel together;

Answer 9

Ram Preventors

Question 10

set is configured as an opposing pair and, depending on function, are designed to close within the bore of the preventer;

Answer 10

Ram Preventors

Question 11

are commonly available in single-, double-, triple- and quad-ram configurations

Answer 11

Ram Preventors

Question 12

seal off open holes

Answer 12

Blind rams

Question 13

seals a range of tubular sizes

Answer 13

Variable bore rams

Question 13

seal off around drill pipe

Answer 13

Pipe rams

Question 14

sever drill pipe

Answer 14

Shear rams

Question 14

spacers between preventers that provide hookups for the choke line and kill line during a kick

Answer 14

Drilling Spool

Question 14

a hydraulic pressure unit that keeps liquid under pressure in the tanks and provides a method to open and close the blowout preventers quickly and reliably.

Answer 14

Accumulator Unit

Question 15

attached to the blowout preventer stack, usually directly opposite the choke manifold. Heavy weight fluid is pumped to the kill line into the well bore until balance has been restored.

Answer 15

Kill Line

Question 15

device that is used to remove gas from the mud coming out of a well when kick is being circulating out.

Answer 15

Mud Gas Separator

Question 15

an arrangement of piping and special valves, called choke

Answer 15

Choke Manifold

Question 16

– a pipe attached to the blowout preventer stack out of which kick fluids and mud can be pumped to the choke manifold when a blowout preventer is closed in on a kick.

Answer 16

Choke Line