Grease injection seals form a dynamic barrier around moving wireline using high-viscosity grease pumped at 1.5x well pressure. Dual flow tubes with braided packing create multiple sealing zones. Schlumberger’s grease system uses 150 cSt silicone grease, sealing 10,000 psi on 0.125-inch cable. Injection rates of 0.5 gal/min maintain seal during 200 ft/min runs. In offshore rigs, these ... https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/