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Cement Additives > Additives > Flashcards

Additives Flashcards

1
Q

HexCem Fluidlock (LD/HD)

A
  • Fluid loss additive
  • Improves slurry stability
  • Does not increase viscosity
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2
Q

Cal Portland G

A
  • Class G cement
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3
Q

Q-CEL ONG

A
  • Hollow microspheres
  • Allows for lightweight slurries
  • Attributes to higher compressive strengths even at low densities
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4
Q

TRB-CD-33

A
  • Dispersant
  • Improves flow of the slurry
  • Decreases HHP requirements
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5
Q

Glass Bubbles

A
  • Hollow glass spheres used to reduce density and increase strength
  • improved heat insulation properties
  • functions as a lost circulation aid
  • increases slurry vol. yield
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6
Q

NaCl (Sodium Chloride)

A
  • Used to improve bonding to water-sensitive shales, bentonotic sands, and salt formations
  • Low concentrations provide acceleration
  • High concentrations provide retardation
  • Minimizes damage in zones that are sensitive to fresh water
  • Saturation is required for bonding to salt formations
  • Decreases the effectiveness of some FL additives
  • Decreases the yield of bentonite
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7
Q

Silica Flour

A
  • Powdered sand used to stabilize the strength and permeability of cement above temps of 230F
  • Can cause slurry viscosity to increase without required water
  • Helps with compressive strength
  • Assists in preventing strength retrogression
  • compatible with all cements
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8
Q

Fritz Bond EX-H

A
  • High temperature expansion additive
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9
Q

Bentonite

A
  • Extender
  • Reduces free water and fluid loss
  • Increases Slurry yield
  • It increases slurry visc. and decreases early strength
  • Is a colloidal clay. In the presence of water, it swells to about 10 times its original dry volume. It is used to increase cement slurry vol. and to decrease slurry weight
  • Cement slurries containing more than 8% bentonite need to contain a dispersant to control slurry visc
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10
Q

Microlite

A
  • Allows for lower density slurries
  • Extender
  • Used as a stabilizer to create homogenous cements & eliminates settling
  • Used in lightweight cement to prevent free water
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11
Q

CaCl2 (Calcium Chloride)

A
  • Accelerator
  • shortens WOC time
  • Used in shallow, low temp wells
  • Decreases TT
  • Increases early strength
  • Decreases slurry visc at low concentration
  • Increases slurry visc at high concentration
  • Concentration to be used: 2-4% - greater than 5% becomes erratic
  • Promotes water loss
  • better to add to cold mixing water than dry cement
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12
Q

Bermcoll M10

A
  • Newer & cheaper additive
  • Fluid loss additive (promotes water retention)
  • improves slurry stability
  • possible rheological modification
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13
Q

X-Air (antifoam)

A
  • Powdered de-foamer
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14
Q

Kol-Seal

A
  • Lost circulation material
  • Slurry extender
  • Lightweight granular solid. Provides an economical cementing system with low-density lost circulation control and superior scouring action
  • Does not alter TT
  • compatible with most cement additives
  • Provides a lightweight, high yield slurry
  • Does not require additional water
  • Provides compressive strength for low dens slurries
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15
Q

Gypsum

A
  • Accelerator - Short TT - short pump time
  • Rapid compressive strength development
  • Has expanding properties
  • Increases visc, water requirement, & early strength
  • Decreases density slightly (and TT)
  • Has rapid settling and/or gelation properties which makes it necessary to keep the slurry in motion until it’s placed at the required location
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16
Q

Tupac 4901

A
  • Liquid additive
  • self stabilizing late
  • Gas migration
  • Thermal stability
  • Alkali and acid resistance
17
Q

StAR TS

A
  • Tensile strength enhancer

- Lost circulation and fluid loss control

18
Q

Microfine

A
  • Fine-particle, high surface area cement blend useful for squeeze jobs, tight casting leaks, gravel packs, small fractures, channels, or microannuli. Can also be used in slimhole conditions for production strings
  • Excellent pumping properties due to its ultra fine particle size
  • Eliminates the need for dispersants or friction reducers
  • Compatible with all cement additives and does not require dispersants
  • Used in lightweight applications
19
Q

PRC-4

A
  • Retarder intensifier
20
Q

Thermoset fine

A
  • Lost circulation additive
21
Q

XPC-1

A
  • Expansion additive
  • Improves bonding
  • Helps to prevent losses
  • Enhances zonal isolation
22
Q

CFL-160

A
  • Fluid loss controller for temps <200F
23
Q

Cemthix

A
  • Thixotropic additive designed to control free water
  • Provides excellent thixotropic properties
  • Promotes early strength development
  • Helps prevent cement fall back
  • Helps control fluid migration
  • It accelerates at low temps
  • Can be adversely affected by dispersants, retarders and dispersing fluid-loss additives
24
Q

stAR Thermoset Medium

A
  • lost circulation additive
25
Q

CFL-115

A
  • Fluid loss controller for temps <180F

- Old & expensive

26
Q

Superlite

A
  • Used in lightweight slurries
  • Minimizes free water
  • Increases fluid loss control
  • Helps with compressive strength
27
Q

CR-1

A
  • Cement retarder
  • effective up to 250F
  • secondary dispersant
28
Q

Diacel LWL

A
  • Fluid loss controller

- Secondary dispersing effect 70-350F

29
Q

Fly ash

A
  • Helps decrease density
  • increases pump ability
  • promotes bonding
  • at times is used to replace a portion of cement and reduce its density
30
Q

StAR HTR

A
  • High temp retarder

Does not require intensifier even at 380F

31
Q

FL-17

A
  • Fluid loss controller 80-350F

- Secondary gas migration

32
Q

Sodium Metasilicate

A
  • Is an anhydrous sodium metasilicate with a high water requirement
  • Used to produce a low-density, high-volume cement slurry
  • Causes slurry to gel
  • Accelerates slurry
  • Helps in decreasing density by reducing free water
  • Not recommended for use with CaCl2 or high conc. Of NaCl
33
Q

CAF-34L

A
  • Accelerator
  • Decreases WOC time
  • De-foamer additive. Minimizes air entrainment and foaming

Cement Additives (1 decks)

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