Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Perforating > Perforating > Flashcards

Perforating Flashcards

1
Q

The calculated flow area provided by perforations across a specific zone of interest

A

area open to flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A technique in which several perforating guns are run on a single trip into the well, and then all are fired simultaneously

A

bank firing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A perforating charge designed to create perforations with a large-diameter entrance hole

A

big hole charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A section of heavy walled tubing that is placed across any perforated interval through which the production tubing must pass, such as may be required in multiple zone completions

A

blast joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A small metal tube containing secondary high explosive that is crimped onto the end of the detonating cord

A

booster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A downhole tool that is located and set to isolate the lower part of the wellbore

A

bridge plug

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

An early perforating method that used a hardened steel bullet or projectile, propelled by an explosive charge, to create a perforation tunnel

A

bullet perforating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

An exposed gun system used primarily in wireline operations

A

capsule gun / strip gun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A perforating gun, consisting of a loading tube and shaped charges

A

carrier gun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A downhole tool used to confirm or correlate treatment depth using known reference points on the casing string

A

casing collar locator (CCL)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A log provided by a casing collar locator tool that generally incorporates a gamma ray log to correlate the relative position of casing string features, such as the location of a pup joint, with the reservoir or formation of interest

A

casing collar log

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

A perforating gun assembly designed to be used in a wellbore before the production tubulars or completion equipment have been installed, thus allowing access for a larger diameter gun assembly

A

casing gun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A downhole tool run on wireline to sever tubing at a predetermined point when the tubing string becomes stuck

A

chemical cutter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The rubblized or damaged zone surrounding a perforation tunnel where the action of the perforating charge or bullet has altered the formation structure and permeability

A

crushed zone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The area surrounding the wellbore that has been harmed by the drilling process, generally as a result of mud or cement-filtrate invasion

A

damaged zone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A perforating charge designed to provide a long perforation tunnel, such as may be required to bypass any near-wellbore damage

A

deep penetrating charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

To set off an explosive material

A

detonate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

A cord containing high-explosive material sheathed in a flexible outer case, which is used to connect the detonator to the main high explosive

A

detonating cord / primer cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

A device containing primary high-explosive material that is used to initiate an explosive sequence

A

detonator / blasting cap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A safety device used when running and retrieving tools or drill collars with a flush external surface that may easily pass through the rotary table slips

A

dog collar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

A ball that is dropped or pumped through the wellbore tubulars to activate a downhole tool or device

A

drop ball

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

A heavy steel bar that is dropped through the tubing or running string to fire the percussion detonator on a tubing-conveyed perforating (TCP) gun assembly

A

drop bar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

A device, shaped like a short length of pipe, which is used to drop TCP guns in the rathole or sump

A

drop sub

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

A perforating gun assembly designed to be detached from the tubing or running string after firing

A

dropoff gun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
A value that reflects the number of perforations per unit of length (usually feet) that are producing, or injecting, efficiently
 effective shot density
26
The hole created in the internal surface of the casing or liner by the perforating charge or bullet
 entrance hole
27
A perforating gun assembly that disintegrates upon firing, thereby reducing the volume and dimensions of retrieved components
 expendable gun
28
A pipe-shaped housing that protects the firing head of a tubing-conveyed perforating gun
 fill sub
29
A mechanical or electronic device used to detonate perforating charges conveyed by tubing, drillpipe, coiled tubing or slickline
 firing head
30
A specialized perforating-gun system that contains shaped charges loaded at 0°, 60°, 120°, or 180° phase angles to provide a casing entrance hole of approximately 0,5 in [1,3 cm], which is intended to be large enough for hydraulic fracturing operations
 frac gun
31
A perforating-gun system containing big-hole or gravel-pack charges
 gravel pack gun
32
A device used to perforate oil and gas wells in preparation for production
 gun
33
The point on a gun assembly or perforating string that is used when correlating depth
 gun zero
34
Chemical explosive material having an extremely high reaction rate that creates very high combustion pressures, unlike low explosives that have a much lower reaction rate and are commonly used as propellants
 high explosive
35
A perforating gun having more than four shots per foot
 high shot density gun
36
A perforating gun, consisting of a loading tube and shaped charges
 hollow carrier gun
37
The use of shaped explosive charges to create perforation tunnels
 jet perforating
38
A surface detection system used to ensure that all tubing-conveyed perforating guns have fired, from the top shot to the bottom shot
 last-shot detection
39
The reduction in permeability in the near-wellbore area resulting from mechanical factors such as the displacement of debris that plugs the perforations or formation matrix
 mechanical skin
40
A column of high-pressure nitrogen typically applied to a tubing string in preparation for drillstem testing or perforating operations in which the reservoir formation is to be opened to the tubing string
 nitrogen cushion
41
To create holes in the casing or liner to achieve efficient communication between the reservoir and the wellbore
 perforate
42
To create holes in the liner or casing under conditions in which the hydrostatic pressure inside the casing or liner is greater than the reservoir pressure
 perforate overbalanced
43
To create holes in the liner or casing under conditions in which the hydrostatic pressure inside the casing or liner is less than the reservoir pressure
 perforate underbalanced
44
The section of wellbore that has been prepared for production by creating channels between the reservoir formation and the wellbore
 perforated interval
45
A wellbore tubular in which slots or holes have been made before the string is assembled and run into the wellbore
 perforated liner
46
An acid treatment placed in the wellbore over the interval to be perforated
 perforating acid
47
An explosive device that utilizes a cavity-effect explosive reaction to generate a high-pressure, high-velocity jet that creates a perforation tunnel
 perforating charge / shaped charge |  perforating charge / shaped charge
48
A wireline log run to provide a means of depth correlation by comparing the position of casing collars to the reference log (gamma ray log)
 perforating depth control log
49
A specially prepared fluid placed in the wellbore over the interval to be perforated
 perforating fluid
50
A device used to perforate oil and gas wells in preparation for production
 perforating gun
51
The number of perforations per linear foot
 perforation density
52
A measure, or indicator, of the length that a useable perforation tunnel extends beyond the casing or liner into the reservoir formation
 perforation penetration
53
The radial distribution of successive perforating charges around the gun axis
 perforation phasing
54
Electric detonators used in wireline and electronic firing-head perforating operations, which are immune to radio interference and thus cannot be accidentally triggered by radio transmissions
 radio safe detonator
55
A procedure imposed during perforating operations in which radios at or near the wellsite are switched off to prevent accidental detonation of perforating guns
 radio silence
56
A perforating gun designed to be retrieved from the wellbore after firing
 retrievable gun
57
A blank gun section or spacer installed between the top perforating-gun assembly and firing head in a TCP operation
 safety spacer
58
A perforating gun with a recess profile in the perforating gun body adjacent to the shaped charge
 scallop gun
59
The technique of selectively firing successive perforating guns arranged in a multiple gun assembly
 selective firing
60
A technique used to fire individual perforating guns when multiple guns have been run together in a single trip into the well
 selective perforating
61
 A short piece of brass or steel that is used to retain sliding components in a fixed position until sufficient force is applied to break the pin
 shear pin
62
To perforate a wellbore in preparation for production
 shoot a well
63
A surface detection technique to verify that perforating guns have fired
 shot detection
64
The geometric profile around a correctly placed perforation
 stable arch
65
The space between the shaped charge and the internal surface of the perforating gun body
 standoff
66
 The use of tubing, drillpipe or coiled tubing to convey perforating guns to the required depth
TCP / tubing conveyed perforating
67
A perforating gun assembly designed to run through the restricted clearance of production tubing, then operate effectively within the larger diameter of the casing or liner below
 through tubing gun
68
A special perforating gun, or charge, that is designed for limited penetration to allow an inner tubing or casing string to be perforated without damaging a surrounding outer string
 tubing puncher

Perforating (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions