Acid-Soluble Bridge Plugging Agent: High-Efficiency LCM for Fractured & Vugular Formations

• Customization: Available
• CAS No.: N/a
• EINECS: N/a
• Model NO.: Acid-Soluble Bridge Plugging Agent
• Appearance: Powder
• Usage: Mud Chemicals
• Color: White
• Model No.: Stq
• Grade: Industrial Grade
• Content: Standard
• Use Scene: Oilfield Drilling Industry
• Odour: Insipid
• HS: 3824909990
• Transport Package: 25kg/Bag
• Specification: 25KG/1T
• Trademark: Sanherunjing
• Origin: China
• Package Gross Weight: 25.000kg

Product Description

Product Overview

This product is a specialized acid-soluble bridge plugging agent developed for lost circulation formations in drilling engineering. It is made from special acid-soluble materials as the base, supplemented with composite modifiers. It features high bridge plugging strength, excellent plugging efficiency, and complete acid solubility. It can effectively seal various types of lost circulation channels without affecting subsequent acidizing operations. The acid-soluble nature ensures that once the plugging material contacts hydrochloric acid or other conventional acidizing fluids, it dissolves completely, leaving no residual solids that could block production zones. It is suitable for various drilling scenarios such as oil and gas drilling and shale gas drilling.

Functions and Characteristics

Product Features and Advantages

1. High-Efficiency Plugging: Reasonable particle size gradation allows rapid formation of a dense bridge plugging layer in lost circulation channels, instantly blocking losses. High success rate of plugging, suitable for fractured, porous, and vugular losses. The multi-modal particle distribution ensures effective bridging across a wide range of fracture widths, minimizing the need for multiple treatments and reducing non-productive time.

2. Complete Acid Solubility: Can completely dissolve in conventional acidizing media such as hydrochloric acid, leaving no residual impurities, avoiding blockage of oil and gas channels, ensuring subsequent productivity release, and eliminating the need for additional fishing operations. This feature is particularly valuable in reservoir sections where formation damage must be minimized to preserve long-term well productivity.

3. Excellent Compatibility: Compatible with various drilling fluid systems. Addition does not alter key drilling fluid properties such as viscosity and gel strength, and does not cause flocculation or sedimentation. This allows the material to be added at any stage of the drilling operation without disrupting existing fluid performance or requiring costly system reconditioning.

4. Stable Performance: Excellent temperature and pressure resistance. The bridge plugging structure is not easily damaged in complex formation environments, maintaining plugging effectiveness long-term. Consistent performance under downhole stress ensures reliable sealing even during extended circulation interruptions or when encountering high-pressure zones.

5. Green and Environmentally Friendly: Base materials contain no toxic or harmful substances. Acid-soluble products are easily carried away by formation fluids, causing no secondary pollution to the formation. This environmental profile supports compliance with stringent offshore and onshore regulations, making the product suitable for use in ecologically sensitive drilling areas.

Specification

Parameter	Indicator
Appearance	Grayish-white fibrous powder, non-caking, free-flowing
Fineness	Medium-Coarse Type: Passing 40-mesh sieve, %: 45–95 Fine Type: Passing 80-mesh sieve, %: 25–85
Moisture, %	≤5
Acid Solubility, %	≥75
Water-Soluble Content, %	≤12
Fluid Loss of Original Slurry Before Plugging, ml	Total Loss
Fluid Loss of Original Slurry After Plugging, ml	≤35
Active Content, % ≥	—
Residual Alkali, %	3.0 ~ 5.0
Freshwater Apparent Viscosity, mPa·s ≤	8
Freshwater Fluid Loss Reduction Rate, % ≥	50
Brine Apparent Viscosity, mPa·s ≤	8
Brine Fluid Loss Reduction Rate, % ≥	70

Packaging & Storage

‌Packaging‌: 25 kg triple-layer kraft bags 

‌Storage Conditions‌:

Keep dry and protect from direct sunlight and moisture.

Temperature: 10–30°C (avoid thermal cycling).

Humidity: ≤65% RH (critical for anti-caking).

Ventilation: Well-ventilated area, isolated from oxidizers.

‌Validity Period‌: 24 months from production date (see batch code for details).

Lost Circulation Materials	SDL-2	High Fluid Loss Lost Circulation Material
	SDL-1	Film-Forming Lost Circulation Material
	GPC	Anti-Caving Lost Circulation Material While Drilling
	CBM	Composite Lost Circulation Material
	-	Single Plugging Lost Circulation Material
	SFD-1	Plugging Agent
Lubricants	SLUB	Extreme Pressure Lubricant
	SLUB-1	Solid Lubricant
	SRH-2	Solid Lubricant for Drilling Fluid
	JT-2	Environmentally Friendly Oil-Based Lubricant
Defoamers	DF-1	Silicone Defoamer
	DF-4	High-Efficiency Defoamer TypeⅡ
Weighting Materials	Ultrafine Calcium Carbonate	Ultrafine Calcium Carbonate
	Barite Powder	Barite Powder
Inorganic Salts	Soda Ash	Soda Ash
	NaOH
	-	Sodium Bicarbonate
	KCl	Potassium Chloride
Composite Materials	LBM	Fresh Water System Composite Agent
	SMBM	Salt Water System Composite Agent
Bentonite	-	Sodium Bentonite
Others	HTBH	High-Temperature Protective Agent