Field Testing and Sharing Water Well Assessment with Borehole Imaging Device

Field Testing and Sharing Water Well Assessment with Borehole Imaging Device

Background

Gold Company utilized the GD-C1201 Borehole imaging device to perform a 3D full-well image analysis of a water well with a depth of 200 meters. The well, measuring approximately 20 centimeters in diameter at the opening and spanning a total length of around 200 meters, was surveyed to evaluate the precise condition of the wellbore, including the detection of major fissures, stratification, and other potential factors.

Survey

The Borehole imaging device scans and records the internal conditions of a well, capturing specific images of the subsurface. It typically consists of one or multiple cameras installed on tools or equipment lowered into the wellbore, allowing for descent along the depth of the well.

During testing, the Borehole imaging device continuously captures images of the wellbore, revealing details and features of the wellbore wall. These images can display the surface condition, cracks, stratification, sedimentation, and other potential issues of the wellbore. The imaging data can be transmitted to surface equipment for recording and analysis via cables or wirelessly.

With the Borehole imaging device, operators can observe real-time images of the wellbore and record and save them as needed. These images provide a detailed understanding of the wellbore structure and condition, aiding in determining the well's health, assessing crack severity, and identifying sediment distribution. This information is invaluable for water well maintenance, geological exploration, and engineering evaluations.

Equipment Used

• GD-C1201 Full hole wall imaging system

• 52mm Deep water probe

Result

Based on the inspection conducted using a 3D borehole imaging device on a 200-meter deep water well, the following results were obtained:

• Wellbore surface: The 3D imaging device provided high-resolution images, revealing detailed information about the wellbore's surface. Overall, the wellbore surface appeared smooth without any noticeable damage or signs of corrosion.

• Cracks and faults: During the inspection, several small cracks were identified, primarily concentrated in specific areas of the wellbore wall. These cracks were of a small magnitude and currently do not pose significant threats to the structural stability of the well. Additionally, no evident signs of faults were observed.

• Sediments and deposits: The imaging data displayed the distribution of sediments within the wellbore. Some deposits were observed at the bottom of the well; however, they have not significantly impacted the productivity or operation of the water well.

• Other issues: Apart from the aforementioned results, no distinct wellbore issues such as cavities, stratification, or other structural problems were observed.

In conclusion, based on the inspection conducted with the 3D borehole imaging device, the water well is in good overall condition. However, further monitoring and maintenance may be required for the small cracks and localized sediment deposits to ensure the long-term stability and performance of the water well.

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