Solidat in the Oil & Gas Industry

Solidat End-to-End Measurement & Control Solutions for Upstream, Midstream and Downstream Operations

Figure 1. Solidat measurement and control portfolio for the oil & gas industry - level, flow, pressure, temperature and analytical instruments

 

One Portfolio, From the Wellhead to the Long-Distance Pipeline

Oil and gas production never stops, and neither can its instrumentation. Wellheads run at high pressure and high temperature; separators demand reliable oil–water interface control; storage tanks require custody-transfer grade gauging; long-distance pipelines need non-invasive flow measurement; and refineries depend on continuous combustion and effluent analysis. Solidat supplies the complete measurement chain - level, flow, pressure, temperature and analytical instruments - engineered for these demanding conditions.

On August 29, 2026, Solidat officially launched its Oil & Gas Industry Product Solution in Xi'an, China, alongside the industry exchange meeting on the oil & gas high-speed fieldbus standard AUTBUS, in which Solidat participated as a principal drafter. The full story is available on the Solidat official news page This article walks through the portfolio, the applications and the field-proven results behind it.

Solidat Applied Technologies is headquartered in Zhuhai, Guangdong, with a production base in Shangrao, Jiangxi. Its instruments are exported to more than 50 countries and are widely used in oil & gas, petrochemical, electric power, water treatment and mining industries.

 

Upstream: Wellheads, Separators and Gathering Stations

Figure 2. Natural gas field drilling site - the "first mile" of oil and gas production, from drilling to gathering and transportation

 

Level measurement at the production facility

Production separators, heater-treaters, gun barrels, surge drums and torch gas-liquid separation tanks all share the same requirement: dependable level and interface measurement under pressure, temperature, foam and vapor. Solidat answers with non-contact radar, guided wave radar and local indication technologies:

• The SLDL5100 SoltaFMScan 80 GHz FMCW radar level meteruses a narrow 3° beam for strong anti-interference performance in tanks with internal obstructions, with a measurement range up to 30 m.
• The SLDL5200 SoltaScan W 76–81 GHz radar family and the 26 GHz pulse radar (SLDL5220 series) cover large crude and refined-product storage tanks, offering a cost-effective choice for simple operating conditions.
• FlexScan guided wave radars, including the SLDL5525 with saturated-steam compensation and the SLDL5524 high-temperature cable probe, handle high-temperature/high-pressure vessels, stilling wells and oil–water interface measurement; servo-type and guided wave radars reach ±0.1 mm accuracy for custody transfer.
• For cryogenic service, soft-cable 3300 mm waveguide radars are applied in LNG/LPG storage down to −196 °C, cutting annual maintenance costs per tank. Magnetic level gauges provide reliable on-site local indication.

 

Figure 3. SLDL5100 80 GHz FMCW radar level gauge - narrow-beam, non-contact measurement for separators and storage tanks

 

Pressure and temperature at the wellhead

 

The SLDP3351 smart pressure transmitter family offers accuracy up to 0.02 %, a measuring range from −101 kPa to 67 MPa, process temperatures from −40 °C to 345 °C and 100:1 turndown, with response time as fast as 100 ms. Wetted diaphragms are available in 316L, Hastelloy C, tantalum, Monel and gold-plated versions for sour service and corrosion resistance. The direct-mount SLDP3351-AP configuration is widely used on Christmas trees, casing and tubing pressure monitoring, as documented in the Tahe (Yakela) and Tazhong (Yingmaili) oil & gas fields.

Temperature coverage runs from single-point SLDT248/644 transmitters (PT100/RTD and thermocouple inputs, 4–20 mA/HART) to the SLDT848T eight-channel transmitter and the SLDT3144P multivariable transmitter with dual-sensor thermal backup and drift alarm, including multi-point average temperature systems for storage tanks.

 

 Figure 4. Production tree / Christmas tree pressure measurement and control - SLDP3351 transmitter with Hastelloy diaphragm

Point-level protection and flow at the well pad

• The SLDL5400 RadioDetect 24 GHz microwave level switch penetrates dust, condensate and vapor for high-high/low-low alarm duties.
• The SLDL1610 vibrating rod level switch protects pump intakes and detects granular and powder materials.
• The SLDF7110 MagFlow electromagnetic flowmeter meters water-injection and produced-water flows (0.5 % accuracy, 100:1 turndown, 316L/Hastelloy/titanium electrodes, 4–20 mA + RS485 Modbus/HART).
• Choke and production valves are automated with the ELM050 electric actuator series.

Figure 5. On-site installation of gas production tree instrumentation at a western China oil & gas field

 

 

Midstream: Tank Farms, Gathering Networks and Trunk Pipelines

Figure 6. Aerial view of a petroleum refining, storage and transportation base and the first station of a long-distance pipeline

Custody-transfer tank gauging

Large crude oil and refined-product tanks combine high-frequency radar level, multi-point average temperature and pressure measurement for inventory and custody transfer. Solidat metrology-grade radars provide dedicated LNG antenna designs with top-to-bottom measurement and in-service verification, while wireless adapters and 3300 mm waveguide radars bring tank farm inventory data directly into the SCADA system.

Figure 7. LNG/LPG cryogenic storage and terminal inventory - radar level measurement for service temperatures down to −196 °C

 

Ultrasonic flow measurement: no pipe cutting, no pressure loss

Solidat ultrasonic flowmeters use the transit-time difference principle: no moving parts, no contact with the medium, no pressure loss, and clamp-on installation without production shutdown - making them ideal for retrofit and custody measurement on large-diameter crude and product pipelines.

Model / mounting	Diameter range	Accuracy	Typical use
SLDF2065 flanged spool piece	DN15–DN600	±0.5 % FS	New builds, custody transfer
SLDF2000 external clamp-on	DN25–DN3000	±1.0 % FS	Retrofit, no shutdown, temporary verification
SLDF2080 insertion type	DN80–DN2000	±0.8 % FS	Large pipes under pressure
SLDF2100 portable	DN15–DN6000	±1.5 % FS	Survey, calibration checks, allocation

Table 1. Solidat ultrasonic flowmeter selection for oil & gas pipeline measurement (turndown up to 100:1)

 

Differential-pressure flow measurement remains available with orifice plates, Venturi tubes, Annubar averaging pitot tubes and compact orifice plates (2–38 integrated components, only 2D upstream straight pipe required), paired with SLDP3351DP differential pressure transmitters and multi-parameter mass-flow transmitters.

Figure 8. Annubar flowmeter installation on the West–East Gas Transmission pipeline - differential-pressure flow measurement with SLDP3351 transmitters

 

Field result: orifice plate replaced by ultrasonic

At a gathering and transportation station of a western oil & gas field, an original orifice plate flowmeter was replaced by an SLDF2065 ultrasonic flowmeter. The results: annual electricity savings of 120,000 kWh, measurement accuracy improved from ±1.5 % to ±0.5 %, and annual losses from trade disputes reduced by more than RMB 2 million.

Figure 9. Aerial view of a new long-distance natural gas pipeline under construction - continuous flow and pressure monitoring along the route

 

Downstream: Refining, Petrochemicals and Combustion

Figure 10. Refining and chemical plant complex - atmospheric/vacuum distillation, catalytic cracking, hydrorefining and tank farm systems

 

Hot vessels, steam drums and interface measurement

• In high-temperature lubricating oil and hot-oil vessels, the SLDL5525 steam-compensation guided wave radar corrects saturated-steam interference in real time.
• Boiler steam drums in power generation and waste-heat recovery use the SLDL3600 DiamondDetect electric contact level gauge, rated up to 275 bar at 450 °C.
• High-temperature/high-pressure and anti-corrosion radar variants serve distillation columns, reactors and sour-water strippers.

Gas analysis and turnkey analyzer shelters

Combustion efficiency and environmental compliance depend on continuous gas analysis. Solidat supplies the SLDA9310 zirconia oxygen analyzer for flue-gas O₂ monitoring in process heaters and boilers, and the SLDA2100 sulfuric-acid dew-point analyzer for air-preheater corrosion protection. The broader gas-analysis portfolio covers NDIR infrared analyzers (CO, CO₂, CH₄, NH₃, SO₂, NOₓ), trace and high-purity oxygen analyzers, thermal-conductivity hydrogen analyzers, aluminum-oxide capacitance dew-point meters, and fixed/portable gas detectors for H₂S, combustible gas (LEL), O₂, CO, Cl₂ and NH₃ - delivered as turnkey explosion-proof analyzer shelters.

Each shelter integrates sampling probe, sample preprocessing, analyzer unit, alarm control and automatic calibration, with maintenance intervals of 90 days or longer, Ex d II CT6 protection and 4–20 mA / RS485 outputs into the DCS.

Figure 11. Online gas analysis integrated system - turnkey analyzer shelter for refinery and gas-processing applications

 

Refinery wastewater: 24/7 unattended compliance

Effluent treatment combines electromagnetic flowmeters with online water-quality analyzers: the SLDW5110 UV-C online COD analyzer, W1123 digital pH sensor, SLDW3510 LDO luminescent dissolved-oxygen analyzer, W1513 digital conductivity analyzer, SLDW3310 MLSS suspended-solids analyzer and the SLDW7120 SPE spectral multi-parameter analyzer (COD, ammonia nitrogen, total phosphorus, total nitrogen).

At a large refinery wastewater treatment plant, this suite enabled round-the-clock unattended monitoring: the effluent discharge compliance rate improved from 92 % to 99.5 %, saving more than RMB 800,000 per year in manual inspection costs.

 

Bulk-Solids Inventory: 3D Radar Volume Scanning

Refineries and gas-processing plants also store catalysts, sulfur granules, sand and fly ash. The SLDL53 / SLDL5300 3D radar volume scanner (120–140 GHz) builds a real-time point-cloud surface model and computes volume and mass instead of a single level point. For large square silos and coal bunkers, the SLDL5360 3D multi-point scanning radar coordinates up to 255 sensors into one inventory model - accurate stockpile management without climbing silos.

 

AUTBUS: The High-Speed Fieldbus Built for Oil & Gas

Solidat is a principal drafter of the national technical specification for the oil & gas site high-speed fieldbus, built on AUTBUS (IEC 61158 Type 28 / IEC 61784 CPF 22). At each station, level, pressure, flow and temperature instruments share one two-wire bus carrying both power and data to the fiber-optic backbone and central SCADA.

100 Mbps communication over 500 m, up to 254 nodes, 40 μs deterministic response and bit error rate ≤ 10⁻¹¹.

Transparent compatibility with Modbus, HART, PROFIBUS, CAN, Ethernet and PROFINET; redundant master and ring topology for large stations.

Field cabling reduced by about 60 %, construction cost by about 25 %, overall automation cost by 30–40 %, with payback in 1–2 years.

Figure 12. Natural gas compressor station - yellow process piping, valves and pressure instruments connected over the AUTBUS fieldbus

 

Field Case: Oil–Water Well Smart IoT System

Figure 13. Intelligent IoT system for oil and water wells - intelligent monitoring, data acquisition, remote control and smart diagnostics

 

At the Wuqi Oil Production Plant (Zhangguanmiao, Baibao and Wucangbao production teams), Solidat deployed SLDP3351 pressure transmitters, SLDF7110 electromagnetic flowmeters, SLDL3351 submersible level transmitters and intelligent control cabinets across:

 

• 1,927 production wells
• 771 water-injection wells and 23 water-source wells
• 409 water-distribution stations

 

The IoT network combined with UAV aerial inspection cuts manual well-inspection workload by more than 80 %, reduces fault response from hours to minutes, and increases oil-well production uptime by 3–5 %. A large-screen display system in the central control room shows real-time production dynamics, well status and alarms across the plant.

Figure 14. UAV aerial inspection of well sites after snowfall at the Changqing oilfield - a network of smart oil wells across the wilderness

 

Figure 15. Laser methane telemetry UAV - RTK centimeter-level positioning, detection range ≥ 80 m, for pipeline right-of-way leak inspection

 

Certifications, Quality and Global Service

• Full-range explosion-proof and functional-safety certifications: ATEX, IECEx, CSA, CNEx and SIL2/SIL3; HART, Modbus and PROFIBUS communication.
• 5-year warranty across the product line, with lifetime maintenance of core components.
• Standard products delivered within 2 weeks; customized products within 4–6 weeks; 48-hour service-center response and global spare-parts delivery.
• 24/7 multilingual technical support, CNAS-accredited calibration laboratory, and localized service teams operating in more than 100 countries and regions.

Figure 16. End-to-end application across ref industrial scenarios - from wellhead instrumentation to refinery and terminal integration

 

Discuss Your Project With Solidat

 

Whether you are modernizing a separator, retrofiting a custody-transfer pipeline, building an analyzer shelter or digitalizing an entire oilfield, Solidat provides free model selection and on-site inspection planning. Browse the full product catalog or contact our sales engineering team:

Carl Chen - Sales Manager
SOLIDAT APPLIED TECHNOLOGIES LIMITED
No.33 Kerong Road, Xiangzhou District, Zhuhai City, Guangdong, P.R. China
WhatsApp / Tel: +86 18602022788
Email: solidat@solidat.net
Web: https://www.solidat.net

 

Measure The Solid Benefits...