Density graduation apparatus with automatic hydraulic sidewall contact device

Abstract

The invention relates to well logging equipment, in particular to density calibrating equipment provided with an automatic hydraulic telescoping ram for calibrating a density instrument. The density calibrating equipment comprises the hydraulic telescoping ram and a density calibrator module, wherein the hydraulic telescoping ram comprises a hydraulic cylinder, a motor, a hydraulic gear pump driven by the motor, an oil tank and an energy accumulator; and the oil tank is connected into the hydraulic gear pump which is connected with the hydraulic cylinder, and the energy accumulator is connected into the hydraulic gear pump. In order to solve the technical problems of the prior density calibrating equipment, the invention provides the density calibrating equipment which is provided with the automatic hydraulic telescoping ram, has good fidelity and a controllable pressurizing process, and can achieve pressure maintaining.

Description

technical field [0001] The invention relates to a well logging equipment, in particular to a density scale device with an automatic hydraulic pusher used for the scale of a density instrument. Background technique [0002] The density calibration device is a commonly used calibration device used as a secondary calibration device, which is matched with the density / lithology density logging tool of the exploration well. Its shape is a rectangular module, and a through hole is set at a certain distance from the sideline. When working, it is necessary to use a matching hydraulic pushing device to press in the through hole to perform directional hydraulic pushing on the logging instrument, and count the distance by recording the long and short source distances. Rate and count rate of each energy window to measure the density scale. [0003] The high and low density modules of the traditional density calibration device use an equivalent electron density of 1.7g / cm 3 and 2.7g / cm ...

AI Technical Summary

Problems solved by technology

[0004] 1. The pressurization process cannot be controlled

In the hydraulic equipment for manual pressing, the process of pressing the hydraulic cylinder against the scale is completely controlled manually. How to pressurize and how much pressurization are all controlled by the experience of the operator, so the error of the measurement result is relatively large.

[0005] 2. Unable to maintain pressure

The hydraulic equipment for manual pressing, the pressing process is completely controlled by the operator to continuously operate the hydraulic equipment to press the hydraulic cylinder. After the pressing is stopped, the pressure of the hydraulic cylinder is difficult to maintain at the same pressure, which affects the stability of data collection. Therefore, the Hydraulic equipment that is manually pressed cannot achieve pressure maintenance

[0006] 3. Manual pressure, the operator is close to the strong radiation source, the operation time is long, and it is harmful to the human body

[0007] 4. The density / lithology density logging tool of exploration wells measures formation rocks and is normalized to the equivalent limestone density, so the electron density and bulk density of limestone are numerically consistent, while metal materials are inconsistent , poor simulation

Images