Measuring Course - Multishot

Distinctive features of the KURS-MULTISHOT devices:

• Duration of battery life, reaching several days;
• A large amount of onboard flash memory that allows you to record and store up to hundreds of thousands of measurements;
• Use as a fault gyroscopic inclinometer "Girokursor-M", which allows measurements inside steel drill and casing pipes;
• Geophysical measurements using a KURS-DM gamma-ray logger as a fault inclinometer.

All downhole blocks included in the measuring complex "KURS" are used as fault inclinometers without any changes. Since they are all built according to a single power supply scheme and use the same encoding of the output signal, their autonomy is ensured by a universal power supply unit and recording measurement information. It includes batteries that provide power to the downhole unit, a microprocessor and on-board memory, where the measurement data is recorded.

The conversion of any downhole block to a discharge device occurs according to the scheme shown in the Figure.

A universal power supply unit (UBP) is screwed onto the upper end face of the downhole block instead of the cable head of the geophysical cable, and a multi-link shock absorber is installed on the lower end of the downhole block. At the upper end of the UPS there is a connector through which the batteries are charged and connected to the computer.

The full cycle of measurements can be divided into three stages

The first is preset. The device is connected to a computer, data on a specific bottom-hole block are entered into the device’s memory, which will be dumped into the well and its operation is programmed - switching on, switching off, the sequence of measurements, i.e. at what points in time they should be produced, etc.

The second - the device is discharged into the well, and then removed from it, either inside the drill pipe, or with the overshot head being lowered-lifted on a cable. In the process of lifting, measurements are made at programmed time points (if it is a “Gyrocursor”, then the gyroscope is started and measurements are made by the gyroscope). At the same time points on the surface, data on the length of the tool from the wellhead to the measurement point is entered into the computer.

Third, after extracting from the well, the device is connected to the computer and data from the on-board memory is “downloaded” to the computer. After processing this data and performing calculations, the measurement results are displayed, which are also documented in the appropriate form.