The integration of resistivity and natural gamma measurement results in a compact, reliable, and durable structure; Dual frequency, dual source distance, symmetrical structure coil system, with multiple detection depths and high longitudinal resolution; Adopting a symmetrical measurement mode effectively reduces the impact of environmental factors on measurement; The measurement circuit has low power consumption and high reliability; The measurement system has automatic temperature drift correction function; With automatic correction software for borehole impact and complete interpretation and correction charts, the results are accurate and reliable; The instrument has undergone rigorous testing and testing, and its response is correct, stable, and reliable.

2MHz |
400KHz |
Natural Gamma Ray (NGR) |
|
■ Phase difference
◆ 0.1~2000(ohm-m)
◆ ±0.6%(0.1~50ohm-m)
◆ ± 0.3mS/m (higher than 50ohm-m)
■ Amplitude ratio
◆ 0.1~500(ohm-m)
◆ ±0.8%(0.1~25ohm-m)
◆ ± 0.45mS/m (higher than 25ohm-m)
Vertical resolution (Rshour=1.0 ohm-m, Rbed=0.2 ohm-m)
◆ 0.2m
|
■ Phase difference
◆ 0.1~1000(ohm-m)
◆ ±1.35%(0.1~25ohm-m)
◆ ± 0.5mS/m (higher than 25ohm-m)
■ Amplitude ratio
◆ 0.1~200(ohm-m)
◆ ±2%(0.1~10ohm-m)
◆ ± 6mS/m (higher than 10ohm-m)
Vertical resolution (Rshour=1.0 ohm-m, Rbed=0.2 ohm-m)
◆ 0.5m
|
■ Measurement range
◆ 0~500(API)
Measurement accuracy
◆ ±2 API @ 100 API
Vertical resolution
◆ 172mm(6.8″)
|
Maximum operating temperature: 150 ℃ |
Maximum working pressure: 20000 psi |
Instrument length: 3480 mm |
GS-Res 350
GS-Res 650
GS-Res 1200
GS Res is used in directional well operations for horizontal wells in Daqing area. Among them, it has played an important role in controlling the wellbore trajectory in the operations of wells such as Zhaoping 1, Xu50-Ping 14, and Gulong Nanping 41, and has been recognized by users. In the future, resistivity will be referred to as the standard configuration instrument for horizontal well operations.