Description
A-One Oil Casing Collar Locations Tool is used to measure the relative positions of downhole tools. It determines the depth of the tool by detecting changes in magnetic field intensity. Magnetic locator logging is often used with gamma ray and well temperature logging to provide a more comprehensive dataset.
Casing Collar Locations Tool (CCL ) Measurement Principle
The CCL consists of an inductive coil, magnetic steel, and an amplifier. The inductive coil is positioned between the magnetic steel pieces. As the tool moves within the casing, the magnetic field strength within the coil changes correspondingly with the variation of the magnetic flux from surrounding ferromagnetic objects, thereby generating an induced voltage.


Technical Parameters
|
General Spec |
|
|
Maximum Pressure |
15,000PSI (103MPa) |
|
Minimum Temperature |
-4 °F (-20°C) |
|
Maximum Temperature |
350°F (175°C) |
|
Diameter |
43mm (1-11/16 in) |
|
Tool Length |
1230mm (48.42in) |
|
Effective Length |
1180mm (46.45in) |
|
Weight |
7.5kg (16.53lbs) |
|
Maximum Logging Speed |
32 ft/min (600 m/h) |
|
Working Voltage |
15VDC~30VDC |
|
Zero Length |
GR Section - 15.15in (385mm) |
|
CCL Section - 37.91in (963mm) |
|
|
Temperature Section - 6.5in(165mm) |
|
|
Gamma |
|
|
Test Range Resolution |
0 ~10,000 CPS 1 CPS |
|
Background Noise |
≥100 CPS |
|
Sensor Type |
NaI |
|
Fluctuation Range |
≤ 7% |
|
High-Pressure Range |
< 2000V |
|
Dynamic Range |
10 kHz ~ 50 kHz |
|
SNR |
≥ 5 kHz |
|
Temperature |
|
|
Probe Type |
PT100 |
|
Test Range |
-13°F ~ 350°F (-25°C~175°C) |
|
Accuracy |
±1.8°F (±1°C) |
|
Resolution |
0.09°F (0.05°C) |
|
Response Time |
≤ 1S |
|
CCL |
|
|
Signal Range |
0 ~3300 (mv) |
|
SNR |
≥ 5 kHz |
|
Signal Transmission |
|
|
Tool Bus Type |
CAN |
|
Signal Transmission Rate |
1Mbit/s |
Applications
◆ The Casing Collar Locations Tool application in the Correlation of cased hole logging curves between the casing and the wellbore.
◆ Depth control
◆ Lithology identification
◆ Leakage inspection using a high-resolution temperature logger
◆ CCL is a key tool for casing well operations and is widely used in fields such as perforation and well workover with its high precision, strong adaptability and low failure rate.
FAQ
Q: Does Casing Collar Locations Tool is for real-time mode or memory mode?
A: Memory mode.
Q: Do you have case studies of actual data of tool in operations?
A: Yes, we have.
Q: How to operate the tools?
A: We will provide the Operating Manual.
In addition, our technical team will arrange professional operators to conduct online training for you . Easy to operate and safe to use.
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