Featuring core superior performance including ±0.02% FS high accuracy, 0.001Pa ultra-high resolution, annual drift less than 0.02% FS, and resistance to extreme working conditions of 175℃ and 100MPa, the quartz crystal pressure sensor covers the entire downhole workflow of petroleum operations, including exploration, drilling, well testing, completion, production and water injection. It serves as a core precision device for stable production, efficiency improvement and safety monitoring in deep wells, offshore oilfields and mature oilfields.
1. While-Drilling Pressure Measurement (MWD/LWD Drilling)
Adaptable to the severe working conditions of strong vibration, high temperature and high pressure in ultra-deep wells and shale gas wells, it monitors bottom-hole flowing pressure and annulus pressure in real time. It accurately predicts risks of well kick, well collapse and high-pressure formations, optimizes drilling trajectories, significantly improves reservoir encounter rate, and reduces drilling safety hazards and non-productive time.
2. Precision Well Testing & Reservoir Evaluation
It captures tiny formation pressure fluctuations and accurately restores pressure build-up curves, identifying low-permeability layers and thin interlayers that cannot be detected by conventional equipment. It precisely calculates key geological parameters such as oil reservoir reserves and permeability, providing accurate data support for the design of oilfield development plans.
3. Long-Term Downhole Monitoring for Intelligent Completion
Suitable for long-term downhole deployment in offshore and deep hydrocarbon wells, it operates stably for years without calibration. It monitors layered production pressure changes, accurately identifies inter-layer channeling and production decline, guides water blocking and zonal production, effectively reduces water cut and stabilizes oilfield production capacity.
4. Water Injection Monitoring for Mature Oilfield Potential Tapping
It precisely captures subtle pressure changes of 9–160 psi, feeds back reservoir connectivity and water injection effectiveness in real time, and guides dynamic layered water allocation. It solves the problems of uneven water flooding and invalid water injection, activates remaining oil reserves, and enhances recovery factor and stabilizes production for mature oilfields.
5. Downhole Safety Early Warning Monitoring
Adopting an all-welded anti-corrosion structure with anti-interference frequency signal output, it monitors abnormal pressure changes of wellbore and formation throughout the operation cycle. It provides early warnings of major hidden dangers such as well blowout, leakage, casing damage and formation fracture, fully building a solid safety defense line for downhole operations.
6. Monitoring for High-Temperature & High-Pressure Special Hydrocarbon Wells
Capable of withstanding 175℃ high temperature and 100MPa high pressure, and resisting hydrogen sulfide corrosion, medium adhesion and long-term working impact, it completely eliminates the defects of traditional sensors such as high-temperature drift, easy failure and data distortion, enabling stable monitoring for heavy oil thermal recovery and ultra-deep high-pressure hydrocarbon reservoirs.