What is a Well Temperature, Gamma, and CCL Tool？

Well Temperature, Gamma, and CCL Tool are commonly used logging tools in the exploration and development of oil and gas. They are used to log the downhole temperature, the formation gamma rays and the position of casing couplings.

Through logging the temperature gradient within the wellbore, to identify fluid-producing layers, injection profiles, casing leakage, or cement-bond anomalies.

Advantages

◆ Low Cost & High Efficiency

   No need for complex tools, rapid diagnosis of wellbore abnormalities (such as gas leakage, water intrusion).

◆ Strong Environmental Adaptability

    Suitable for open-hole wells and casing wells, especially with remarkable effects in water injection wells.

Natural gamma rays are used to measure the radioactivity of formations (such as the contents of potassium, uranium and thorium), classify lithology (such as high radioactivity of shale), compare formations and evaluate the content of argillaceous matter.
Advantages

◆ Strong foundational - It is a standard project in the logging series and is applicable to all well types.

◆ No Radioactive Source Required - only passively receives formation signals, to ensure the safe operation.

◆ High Resolution - identifying thin layers (centimeter-level), it is particularly crucial in shale gas reservoirs.

By detecting the magnetic changes of the casing coupling, to confirm the depth position, it is used for depth correction, perforation or packer setting.
Advantages

◆ Precise Localization- The error can be controlled within ±2cm to ensure the accuracy of perforation or tool lowering.

◆ Simple & Reliable - Only magnetic sensors are needed, with strong anti-interference ability.

◆ Essential Tools - For integrated use with other logging tools (such as production logging combination tools).

◆ High Precision

   It adopts high-precision platinum metal temperature sensors, high resolution, high accuracy, sensitive temperature sensing, and a time

   lag constant of less than 1 second.

◆ High Temperature & High Pressure Resistant

   The temperature resistance range is -25 to 175°C, and the pressure resistance is 103MPa

◆ Good Compatibility
   It can be connected to various logging tools (such as Multi-finger Caliper, Electromagnetic Thickness Tool, Gyroscopic Logging Tools,

   etc.)

◆ Management of Water Injection Wells

   It is used to monitor the water injection volume and water injection effect of water injection wells

◆ Monitoring of Production Wells

   It is used to evaluate the liquid production capacity of the oil layer, the saturation of remaining oil, etc

◆ Analysis of Wellbore-Wall Stability

   Combined with other logging data, to analyze the stability of the wellbore wall

Well temperature logging: Low-cost and rapid diagnosis of wellbore problems, it is applied in the dynamic monitoring.

Gamma logging: The core tool for lithology classification is safe and highly versatile.

CCL logging: The "ruler" for depth correction is precise and reliable.

Comprehensive Application: The three are often used in combination (such as in production logging, CCL depth correction + gamma lithology calibration + well temperature leak detection), covering the entire process requirements from formation evaluation to wellbore integrity monitoring, and are an indispensable classic technical combination in petroleum engineering.

Well Temperature, Gamma, and CCL Tool play a significant complementary role in the exploration and development of oil and gas. Through using this tool, it can provide more comprehensive and accurate downhole information, offering a scientific basis for oilfield development decisions.

Welcome to contact us to learn more about our tools via e-mail info@a-oneoil.com