Spacer & Anti Settling Agent - Cementing Additives - Showran Technology Development Co., Ltd.

Spacer & Anti Settling Agent

Type 1: Anti Settling Agent & Spacer Super HT (up to 220℃ ) SP-1

Description and Primary Function:
SP-1 is a kind of pale brown powder which can dissolve in water easily. The base liquid formulated with it performs excellent in suspending and shearing dilution. The weighted spacers mixed by the base liquid, micro silica powder and high weight additive can effectively separate the mud and slurry to enhance the mud-displacing efficiency.

Secondary Effects：
SP-1 as a suspension agent has the ability to improve the stability of cement slurry. It can also be used in completion to prevent blockage during logging, reduce drafting processes during tripping.

Interaction with Other Additives:
It is compatible with other additives, adapt to all kinds of water.

Method of Application:
SP-1 dissolved in water for spacer function. It is first mixed in water by the blender for at least half an hour before adding in the heavy weight additive. The spacer needs to be stirred for 20 minutes. In formulating salt-water spacer, salt should be added after weighting agents. SP-1 dry mixed in cement as a suspension agent.

Table 1 Physical properties

Name	Cementing Spacer	Code	SP-1
Form	Solid	Color	Pale brown
Density（g/cm³）	1.88±0.02	Solubility	Slightly soluble
Odor	Weak odor	pH Value	8.3
Water content (%)	≤8.0	Fineness （0.425mm，%）	≤5.0

Table 2 Normal range of use in wells

Temperature
（ºC）

0~ 220

Concentration（BWOW，%）

0.1~ 2.0

Table 3 Technical index

Item	Index
Thickening time （75%Cement slurry＋25% Spacer fluid）	≥Cement slurry thickening time
Apparent viscosity（85℃，mPa•s ）	≥20.0
Plastic viscosity（85℃，mPa•s）	≥10.0
Fluid loss（85℃，ml）	≤150
Free fluid（% ）	≤3.0
Settlement density difference（g/cm³）	≤0.05

Type 2: Cement Spacer (SRC-100S)

PRODUCT DESCRIPTION
SRC-100S is a kind of suspending agent for spacer. It is mainly used to improve the plastic viscosity and dynamic shear force of spacer system, so as to effectively enhance the stability of the spacer.

PHYSICAL AND CHEMICAL PROPERTIES

ITEM	PHYSICAL AND CHEMICAL INDEX
Appearance	Gray or yellow powder
Density(20±2℃), g/cm³	2.50±0.20

TECHINICAL PROPERTIES

ITEM	TECHNICAL INDEX
Apparent viscosity (30℃), mPa·s	≥20
Yield point (30℃), Pa	≥10
Apparent viscosity (90℃), mPa·s	≥15
Yield point (90℃), Pa	≥7
Suspending solution composition: Distilled water: 400g, SRC-100S: 24.0g

USAGE
Application temperature range: 20-120°C (BHCT)
　Dosage: 2.0-8.0% (BWOW)

Previous page：Cement Expanding Additive Next page：Cement Elastomer