The core technical requirements for the downhole tool lubricants in deep and ultra-deep water oil and gas fields focus on the extreme pressure anti-wear properties, thermal/chemical stability, environmental compatibility and sealing adaptability under “three highs” (high temperature, high pressure, and high corrosion) conditions. There is no unified national standard but follows SY/T 5696, API Spec 7G and enterprise strict control indicators. Typical parameters are as follows:
Temperature tolerance: ≥150℃ (in ultra-deep water, it can reach 175–220℃), requires synthetic ester or polyα-olefin (PAO) base oil, antioxidant (such as phenolic/amino compounds) ≥3%, thermal decomposition temperature >250℃;
Pressure bearing: able to withstand bottom hole static pressure >50 MPa and dynamic pressure cyclic impact, extreme pressure anti-wear property (four-ball method PB value ≥800 N, OK value ≥300℃), needs sulfur/phosphorus/nitrogen extreme pressure additives (avoiding chlorine-induced stress corrosion);
Corrosion inhibition: under H₂S/CO₂/high salt environment (Cl⁻ > 10%) with nickel alloy/titanium alloy/13Cr steel, the corrosion rate is <0.1 mm/a, requires efficient corrosion inhibitor (such as imidazoline derivatives) and low free acid/bas; Fluid compatibility: compatible with water-based/synthetic-based/oil-based drilling fluids, no emulsification, no viscosity increase (apparent viscosity increase of drilling fluid ≤1.5 mPa·s), fluorescence grade <3 (API RP 59); Flow property: can form a film under high shear (10⁴–10⁶ s⁻¹) and usually has a 100℃ kinematic viscosity of 20–40 mm²/s, good pumpability at low temperature (pour point < -15℃); Environmental and safety: biodegradation rate >60% (OECD 301), no APEO/heavy metal， in line with API 11D1/ISO 12925-1 and internal control standards of the system (such as reduction rate of mud cake adhesion coefficient ≥50%， lubrication coefficient reduction rate ≥65%)；
Life and sealing：designed for an oil change cycle >1000 hours (equivalent to downhole operation time)，compatible with rubber/fluorocarbon sealing materials (such as FFKM， HNBR， FKM) (swelling rate <25%)， no deposition or coking tendency (TGA residue carbon <0.5%)； The actual selection requires considering specific tool types (such as MWD/LWD， stabilizers， shock absorbers)， wellbore fluid composition and operation duration， and referring to the lubrication requirements for downhole tools in API Spec 7G version 10； on-site， it is strictly prohibited to mix mineral/synthetic-based lubricants， and it needs to be verified through high-temperature and high-pressure simulation tests (such as E-P extreme pressure instrument， rotational viscometer + corrosion vessel combination)； The LubeSeal brand 101EU deep water high-temperature downhole tool lubricant is a high-quality， high-concentration lubricant product suitable for the oil and gas industry. It can effectively resist corrosion from downhole compounds. The LubeSeal brand 101EU deep water high-temperature downhole tool lubricant is formulated with LIQUILON， which greatly enhances its lubrication and extreme pressure performance. LIQUILON is not affected by acids， corrosives， downhole compounds and hydrocarbons containing gasoline and solvents. The LubeSeal brand 101EU deep water high-temperature downhole tool lubricant is an inert substance and has thermal stability. The film-forming property of the LubeSeal brand 101EU type deep water high-temperature downhole tool lubricant eliminates wear， effectively prevents rust and corrosion， and avoids contact between metal surfaces， thereby significantly reducing the operating temperature of the equipment. In many field application cases， the power output of the drive power supply has been reduced to a certain extent. The LubeSeal brand 101EU deep water high-temperature downhole tool lubricant can provide immediate lubrication for key equipment areas when the equipment starts. The LubeSeal 101EU deepwater high-temperature downhole tool lubricant is recommended for use in O-rings, sealing joints, gaskets, packer plugs, and other downhole tool accessories to prevent drying out, cracking, and contamination by downhole compounds. The LubeSeal 101EU deepwater high-temperature downhole tool lubricant is also recommended for lubricating steel wire operation equipment and other various downhole tools that are extremely important for corrosion resistance and wear resistance. The LubeSeal 101EU deepwater high-temperature downhole tool lubricant makes the disassembly and removal operations of downhole tools affected by harmful downhole compounds convenient and fast. Product features and advantages: ※ Contains LIQUILON components ※ High concentration ※ Can eliminate wear ※ Rust and corrosion prevention ※ Can avoid contact between metal surfaces ※ Residual lubrication ※ Can seal steel wire operation tools ※ Can provide immediate lubrication during equipment startup ※ Operating temperature range: 10°F to >400°F (-12°C to 204°C)
※ Can effectively prevent seizing and sticking during the fastening process of steel wire operation tools
※ Shelf life: Two years (2026-05-27)
