Gamma Module For LWD
The downhole probe is converted into electrical pulse signals by the natural gamma rays of the gamma detector formation. After processing, the count rate of the gamma rays is obtained, which is transmitted to the ground through the mud pulse transmission system of MWD, and the real-time gamma rays are obtained after processing. Horse curve. At the same time, the gamma count rate is sent to the memory of the gamma probe for storage. After the probe is taken out from the bottom of the well, the stored data is processed to obtain the replayed gamma curve.
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The downhole probe is converted into electrical pulse signals by the natural gamma rays of the gamma detector formation. After processing, the count rate of the gamma rays is obtained, which is transmitted to the ground through the mud pulse transmission system of MWD, and the real-time gamma rays are obtained after processing. Horse curve. At the same time, the gamma count rate is sent to the memory of the gamma probe for storage. After the probe is taken out from the bottom of the well, the stored data is processed to obtain the replayed gamma curve.
1. LWD Coil Array Short Crust (It can be processed according to the customers' requirements.)
2. LWD Wearproof Case (It can be processed according to the customers' requirements.)
3. Pressure Short Crust While Drilling (It can be processed according to the customers' requirements.)
4. Near Bit Gamma Well Deviation Measuring Short Crust (It can be processed according to the customers' requirements.)
The Gamma ray log measures the natural gamma radiation produced by the disintegration, or decay, of radioactive nuclei in the formation.
Gamma ray logs are helpful for quantifying shaliness, well-to-well correlation, depth correlation between open- and cased-hole logs, and for correlation between logging runs.
Specifications:
Gamma Detector Type: APIGR
Gamma Realtime: Yes
Recommended Minimum Sample Period: 10 Seconds
Measurement Range: 0~500API
Measurement Accuracy: ±3API (0~150API) ±10API (150~500API)
Max Data Storage Capacity: 110,000 Groups
Sensitivity: Better than 1.6 CPS/API
Vertical Resolution: Better than 130mm
Recommended Measurement Speed: ≤30 m/
Applications:
Geosteering horizontal wells.
Detecting approaching bed boundaries with high gamma ray contrast.
Maintaining tight trajectory control when drilling in formations with high steering difficulty.
Drilling horizontals in gas reservoirs where extremely flat trajectories can improve production.
Determining dip direction and detecting fractures via borehole imaging for better reservoir understanding.
Stopping precisely at desired casing/coring points.
