Bentonite for drilling fluids

Applications: Our company’s products are primarily used in oilfield drilling to address issues such as spalling, collapse, leak sealing, and wellbore protection, all of which they effectively mitigate.

Category

Oilfield Drilling Mud Series

Product Description

　　 Characteristics: This product is a yellow‑white powder, exhibiting excellent suspending, swelling, hydrophilic, and lubricating properties.
　　 Purpose: Our company’s products are primarily used in oilfield drilling, effectively addressing issues such as wellbore spalling, collapse, leak sealing, and wellbore protection.
　　 Packaging: It is packaged in a double-layer system: an inner plastic film and an outer woven plastic bag, or according to customer specifications. Package weight is customized per customer requirements.

Technical Specifications for Bentonite Used in Drilling Fluids

Project		Indicator	Bentonite for Longteng drilling fluids
Residue on a 75 μm sieve (mass fraction) (%)		≤1.5	1.1
Performance of the suspension before thermal cycling	Viscometer reading at 600 r/min	≥30.0	40.5
	Dynamic–plastic ratio, Pa/(mPa·s)	≤3.0	0.9
	Filtrate volume (ml)	≤15.0	13.0
Performance after the suspension is thermally rolled at 150°C for 16 hours	Viscometer reading at 600 r/min	30.0-90.0	73.0
	Filtrate volume (ml)	≤20.0	17.2
Performance after the suspension is subjected to thermal cycling at 180°C for 16 hours.	Viscometer reading at 600 r/min	30.0 - 90.0	55.5
	Filtrate volume (ml)	≤25.0	16.4

Technical Specifications for OCMA-Grade Bentonite

Performance	Indicator	OCMA-grade bentonite
Viscometer, 600 r/min reading	≥30	≥35
Yield value/plastic viscosity	≤3	≤2.8
Filtrate volume (ml)	≤16.0	≤15.0
Residue on 75 µm sieve (%)	≤2.5	≤2.0
Moisture (%)	≤13.0	≤11.0