High Temperature Production Logging Tools

Product Overview

High-temperature production logging tools are downhole measurement instruments designed for harsh high-temperature well conditions, capable of operating reliably at ambient temperatures up to 220 °C. Run into oil-gas wells via conveyance carriers, they acquire key downhole production parameters to evaluate well performance, identify inflow profiles, detect channeling, locate leakage points and monitor reservoir production status. These tools are widely applied in thermal recovery wells, deep high-temperature reservoirs and complex production wells.

Core Features

◆ High-temperature resistance Precisely selected high-grade metal alloys, high-temperature resistant electronic components and special insulating packaging support long-term stable operation under 220 °C borehole environment, resisting thermal drift of circuit and sensor performance.

◆ Integrated multi-parameter measurement Modular tool string integrates multiple sensors, which can measure flow rate, downhole temperature, pressure, water-holdup, density and casing collar location in one run, obtaining complete production profile data.

◆ Robust mechanical structure High-strength stainless steel housing, anti-vibration modular connections and wear-resistant structural parts adapt to downhole vibration, mud erosion and complex wellbore conditions, improving downhole operational reliability.

◆ Modular assembly Independent functional modules can be flexibly combined according to well-site requirements, convenient for maintenance, replacement of damaged units and adapting to different well diameters and logging objectives.

◆ Stable data acquisition High-precision sensors and anti-interference electronic circuits deliver high-fidelity downhole data, supporting real-time surface data transmission or downhole memory recording modes.

Main Measuring Parameters

◆ Downhole pressure

◆ Borehole temperature

◆ Fluid flow rate

◆ Water holdup / fluid phase fraction

◆ Fluid density

◆ Casing collar locator (CCL) depth positioning

Typical Applications

◆ Production profile monitoring for high-temperature deep oil & gas wells

◆ Inflow distribution evaluation of producers and injectors

◆ Detection of casing leakage, inter-layer channeling and fluid cross-flow

◆ Performance diagnosis for thermal recovery heavy-oil wells

◆ Post-stimulation effect evaluation after fracturing & acidizing operations

Operating Specifications

◆ Maximum operating temperature: 220 °C

◆ High-strength pressure-bearing metal housing

◆ Modular concatenated tool-string structure

◆ Support cable-conveyed or memory-logging deployment