HiDRIL - HTHP OBM Technology

n  Technical Introduction

    HiDRIL - HTHP OBM is meticulously crafted for high-temperature deep and ultra-deep well operations. It commences with the synthesis of high-efficiency emulsifiers to reduce oil-water interfacial tension, enhancing stick-cut control under high-density conditions with minimal emulsifier addition. This formulation boasts strong inhibition, high lubrication, micro-blocking, and anti-corrosion characteristics, addressing the performance demands of drilling fluid density, temperature resistance, and fouling resistance in complex formations like extensive gypsum-salt formations and localized high-pressure brine areas.

    Key treatment agents include the main emulsifier HiEMUL, auxiliary emulsifier HiCOAT, wetting agent HiWET, thixotropic agent RheVIS, fluid loss control agent HiFLO, and formation sealant MicroCAP.

n  Technical Features

   ( 1 ) Excellent thermostability: exceeds 220 ℃, with a density capability up to 2.90 g/cm ^3;

   ( 2 ) Precise Rheological Control: Dynamic shear force and 3 revolutions remain stable within 3-10, facilitating ultra-low viscous shear operation and effectively reducing the load on the drilling site's circulation system.

   ( 3 ) Strong anti-pollution ability: Voltage maintained at ≥400V even with 30% saltwater intrusion; remains a complete emulsion at local pollution concentration as high as 100%, providing ample time for ground treatment.

   ( 4 ) Good on-site adaptability: high-density added weight is large, and it still has good solubility under normal shear conditions.

   ( 5 ) Good compatibility: Compatible with both diesel base and white oil based fluids.

n  Field Application

    The system has seen successful deployment in over 20 wells in the Kuqa Shanqian well in Tarim, with operations running smoothly. Notably, one of the high-density wells established the highest density record among international operating wells. During drilling operations in extensive salt-gypsum layers, tripping and drilling were executed successfully. Additionally, it exhibits strong inhibition against creeping ooze, maintaining system performance well during continuous saltwater intrusion processes.