The article discusses early well logging operation. The authors suggest using a new piece of equipment, MGG-3x168x21 logging rig with a sealing device. This equipment was developed by specialists of RN-Uvatneftegas LLC together with Neftegazdetal LLC colleagues. The MGG-3x168x21 rig allows for well logging immediately after moving the drilling rig to the next well. Alternative well logging options existing today are considered. The first option is to use a well completion rig. The disadvantage of this method is that the completion crew is idle while only the rig itself is used. The second option is to use lubricators available on the market, but the lubricators’ diameters are limited and guy-lines are needed to ensure stability.
The article provides information on the rig design. To make it easier to install logging tools, the rig is placed at the well horizontally. To fix the tools in the receiving chamber, a “trap" is installed in the lower part of the rig. After that, the rig is put into a vertical position using a hydraulic pump. The MGG-3x168x21 rig has been tested at RN-Uvatneftegas LLC fields and in has proved effective. The rig made it possible to reduce well completion time by 12 hours per well. Well completion time with and without using the rig was compared. It is demonstrated that the MGG rig can be installed close to the batch drilling rig, which allows for well logging immediately after moving the rig to the next well.
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