Product Details

Solid Lubricant

1. Product Overview

Solid Lubricant (alias: Graphite Powder) is a high-performance oilfield chemical synthesized from natural graphite and grease-based polymers. With excellent lubricating properties, it forms a strong lubricating film on the surfaces of drill bits and tools, reducing friction and wear. It is widely used as a key additive in water-based drilling fluid systems to improve drilling efficiency, prevent differential sticking and bit balling, and extend equipment service life.

2. Appearance & Technical Specifications

Core Technical Parameters

3. Core Functions

3.1 Improving Drill Bit Efficiency & Extending Service Life

The flake-like crystal structure of graphite forms a protective coating on the drill bit surface, filling capillary pores and reducing contact area with the borehole wall. This lowers friction, enhances drilling efficiency, and extends the service life of drill bits and tools.

3.2 Reducing Mud Sticking & Bit Balling

During drilling, increasing wellbore pressure may cause mud-induced bit balling. The solid lubricant forms a low-friction protective layer on both the drill bit and borehole surfaces, preventing mud adhesion and minimizing balling incidents.

3.3 Improving Filter Cake Lubricity & Preventing Sticking

It improves the lubricity of the filter cake, reducing friction between drilling tools and the borehole wall. This lowers lifting resistance and prevents sticking accidents, ensuring smooth drilling operations.

3.4 Strengthening Borehole Wall & Preventing Collapse

Beyond lubrication, the product also strengthens the borehole wall, providing additional stability and preventing collapse, especially in unstable formations.

4. Product Application

Widely used in oil and gas drilling operations as an essential additive for all water-based drilling fluid systems, with key applications including:

· Lubricating drill pipes and reducing friction coefficients

· Preventing differential sticking and bit balling

· Improving filter cake lubricity and reducing lifting resistance

· Strengthening borehole walls and preventing collapse

· Accelerating drilling and reducing overall drilling time and cost

5. Product Advantages

✅ Excellent Lubricating PerformanceSignificantly reduces friction coefficients, providing superior lubrication in various drilling conditions.

✅ Good Compatibility & Easy ApplicationCompatible with other drilling fluid additives, with simple and convenient on-site use.

✅ No Adverse Effect on Mud PropertiesDoes not affect the rheology or stability of drilling fluids, ensuring consistent performance.

✅ High-Temperature ResistanceMaintains stable lubricating performance under high-temperature downhole conditions.

✅ Environmentally Friendly & Non-ToxicNon-toxic, harmless and eco-friendly, meeting environmental protection requirements for drilling operations.

6. Packaging Specification

· Standard: 25 kg/bag in woven bags, paper-plastic composite bags, or bulk bags.

· Customizable packaging specifications are available according to client requirements.

7. Storage & Transportation

Store in a cool, ventilated, and dry warehouse during storage and transportation. Keep away from fire, heat sources, and direct sunlight to maintain product quality and performance.

8. Disclaimer & Technical Support

All specifications and descriptions in this document are for reference only. The product shall be used in accordance with the customer’s actual working conditions and technical requirements. Customized formulations and solutions are available upon request.

Application Cases of Solid Lubricants for Drilling Fluids

1. Torque and Drag Reduction Case for Ultra-long Horizontal Shale Gas Wells

Case Background: Ultra-long horizontal shale gas wells have long open-hole soaking time, large contact area between drill string and wellbore wall, and severe friction and torque increase during sliding drilling and tripping. Conventional liquid lubricants are prone to emulsification failure, poor high-temperature stability and short lubrication duration, resulting in high downhole drag, difficult tool face control and increased risk of stuck pipe, which restricts the extension and efficient construction of long horizontal sections.

Application Formula & Dosage: On the basis of water-based drilling fluid system for horizontal wells, 1.5%–2.5% high-efficiency solid lubricant was added as the core anti-friction functional agent. It forms a stable solid lubricating protective layer on the mud cake and drill string surface to achieve long-term anti-friction and drag reduction.

Application Effect: The solid lubricant has excellent high-temperature resistance and stable lubricating performance. It can fill the micro-pits on the wellbore mud cake surface, form a smooth anti-friction isolation layer, effectively reduce the friction coefficient between drill string and well wall, significantly reduce downhole torque and tripping drag. It solves the problems of difficult tool face adjustment and high construction resistance in long horizontal sections, improves drilling speed and directional control accuracy, and ensures safe and smooth completion of ultra-long horizontal well construction.

2. High-temperature Lubrication and System Stabilization Case for Deep HTHP Wells

Case Background: Deep well high-temperature and high-pressure formations have bottom hole temperatures exceeding 150℃. Conventional liquid lubricants are prone to high-temperature oxidation, volatilization and failure, accompanied by system foaming and rheological fluctuation. The lubricating performance decays rapidly with the extension of drilling time, resulting in increased downhole friction and frequent downhole complex conditions, which cannot meet the long-cycle lubrication requirements of deep and ultra-deep wells.

Application Method & Dosage: 1.8%–2.8% high-temperature resistant solid lubricant was applied in high-density HTHP drilling fluid systems. It features non-volatile, non-foaming and thermal aging resistance to stabilize downhole lubricating performance under extreme working conditions.

Application Effect: The product has stable solid particle structure, no thermal decomposition or performance attenuation after long-term high-temperature rolling. It can maintain continuous and efficient lubricating and anti-wear effects in high-temperature and high-pressure environments, effectively reduce drilling friction and torque fluctuation. It does not affect the rheological filtration performance of drilling fluid, avoids foaming and instability problems caused by liquid lubricants, ensures long-term stable lubrication of deep well systems, and reduces downhole construction risks.

3. Anti-wear and Drag Reduction Case for Offshore Cluster Well Seawater Drilling Fluids

Case Background: Offshore cluster wells adopt seawater-based drilling fluid systems, which have high salinity and strong ion interference. Conventional lubricants are sensitive to salt pollution, prone to performance degradation and poor compatibility, resulting in unstable downhole lubrication, severe casing and drill string wear, and high tripping resistance, affecting the high-efficiency construction of offshore well groups.

Application Dosage: 1.2%–2.2% salt-resistant solid lubricant was added to offshore seawater drilling fluid systems to achieve anti-salt pollution, anti-wear and stable lubrication integration.

Application Effect: The solid lubricant has excellent salt and seawater resistance, stable performance in high-salinity systems without compatibility failure. It can form a uniform anti-wear lubricating film on the surface of drill string and wellbore mud cake, effectively reduce the friction of directional drilling and casing running operations. It significantly reduces the wear loss of drilling tools and casings, improves the success rate of one-time casing running, and meets the requirements of high-efficiency and low-loss drilling for offshore cluster wells.

4.  Anti-sticking Drag Reduction and Speed Increase Case for Directional Deflection Wells

Case Background: Directional deflection wells have complex well trajectories and large wellbore curvature. During deflection and sliding drilling, the contact pressure between drill string and well wall is high, with severe friction resistance and obvious stick-slip phenomenon. Conventional lubricants have short effective duration, poor adaptability to complex well trajectories, and cannot continuously reduce downhole friction, resulting in low directional drilling efficiency and increased downhole complex risks.

Application Method & Effect: Solid lubricant was applied at 1.3%–2.0% in directional well drilling fluid systems. Relying on physical ball-bearing and smoothing effects of solid particles, it optimizes downhole friction conditions in an all-round way. It stably reduces drilling torque and stick-slip vibration, improves trajectory control accuracy, effectively avoids differential pressure stuck pipe risks, and significantly improves directional drilling efficiency and footage speed.

5.  Low-damage Lubrication and Reservoir Protection Case for Low-permeability Reservoirs

Case Background: Low-permeability reservoirs have tiny pore throats and fragile reservoir structures. Conventional oily liquid lubricants are prone to oil phase residue and pore throat blockage, causing reservoir permeability damage, poor logging response and reduced reservoir reconstruction effect, failing to meet the standard of low-damage protective drilling.

Application Method & Effect: The conventional dosage is 1.0%–1.8%. The solid lubricant is non-fluorescent, oil-free and low-residue, with excellent reservoir compatibility. While improving the lubricating performance of drilling fluid and reducing downhole friction, it will not block reservoir pore throats or interfere with logging interpretation. It has low comprehensive reservoir damage and high core permeability recovery rate, realizing high-quality lubrication and low-damage protective drilling of low-permeability reservoirs.