Poor equipment use environment. If equipment is used improperly and maintenance is not done in time, it will inevitably accelerate the aging of the equipment. For example, if the external watch is not protected, it will accumulate dirt, damage the paint coating, and make the instrument quickly rust and worn out. Failure to pay attention to moisture-proof and heat-proof will reduce the insulation strength of internal circuit components, wiring, and brackets, resulting in serious faults such as leakage, change of value, breakdown, and burnout. Therefore, in the production practice, well logging equipment should be used to prolong the life of logging equipment. The maintenance and maintenance of logging equipment is especially important.
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The simplest overhaul of sensors and circuits is the maintenance personnel's use of eyes to see, listen to the ear, to visually determine whether the components are damaged and the location of the fault, determine the cause of the fault, the advantage is simple and rapid, does not require the use of professional detection instruments, this method should have With certain experience, this method is often used to overhaul initial failures and improve ergonomics.
There is measurement and maintenance, through the multimeter to measure the voltage, current, resistance to determine the fault, the general need to measure the product power supply voltage and the unit voltage of each unit operating point voltage crystal extreme voltage, the voltage of the integrated block pins, and The normal value is compared to analyze the cause of the fault. By measuring the whole machine or unit circuit operating current, the sensor input signal current to check for short circuit, component damage and the working status is normal. Because the current measurement needs to connect the current meter into the line, it is often necessary to disconnect the component wiring in the printed circuit board or the line, and sometimes the operation is inconvenient, so it is also possible to indirectly measure the electric voltage and convert the current value again using Ohm's law. The measurement of resistance is often used in the case where the machine to be repaired is not energized. It is also a simple method to judge the quality of a component when it is connected to contacts, contact pins, and printed boards.
Then there are some products because of the bad use of the environment, the components are subject to vibration, corrosion, oxidation, wear, dust caused by displacement, poor contact moisture, so that the whole machine is not working properly, resulting in reduced technical performance, can be printed on the board, components Such as dust, with non-corrosive anhydrous alcohol, such as cleaning, and then dry or dry, remove the oxide joints re-welded joints, reinforcement fasteners, thereby restoring product features.
During the normal use of the UPS, the equipment should be frequently maintained and maintained to ensure reliable operation and extend the life of the equipment. Should always pay attention to make:
Ensure that the UPS is clean and free from dust and foreign objects. When turning off the UPS, wipe it with a soft, dry cloth.
In areas where there is no power interruption for a long period of time, disconnect the UPS mains input periodically (usually for three months), discharge the battery by 30%, and check the battery operation.
Analysis and elimination of common fault phenomena
Fault phenomenon
cause of issue
Troubleshooting
All lights are off
Mains and battery are not connected
Mains power is not connected and the battery is exhausted
AC and DC fuse blows
Access to mains and batteries
Connect the mains and charge the UPS
Replace spare or same size fuse
When the light is off or turn on all the lights off after a few seconds, you can not open the UPS
Battery exhausted
Connect the mains and charge the UPS
Mains light (green) is off
Mains electricity is not connected
Mains fuses fail
Access to the mains
Tighten or replace the same size fuse
Battery indicator is off
Battery fuse blows
Replace spare or same size fuse
Overload indicator light
Output overload
Reduce the overload load to the allowable range of the device
Fault indicator is on
Short circuit
Cut off the inverter switch, eliminate short-circuit load, restart
Battery indicator turns red
Battery power
Charge the battery. Access to mains, charging for more than 10 hours
Battery indicator is still red after charging
Charging fuse blows
Replace spare or same size fuse
UPS no output
Output line is not connected
Mains battery is without electricity
UPS is damaged
Connect the output line
Into the mains and battery
Please contact the manufacturer or a nearby maintenance department directly
Logging software belongs to application software and application software has specificity. Dedicated means that the software performs specific functions in a specific device and system supporting software environment. Therefore, it is better not to install other irrelevant software for the dedicated logging computer, and it is absolutely impossible to use the logging-dedicated computer for other purposes. Installing other software In addition to occupying hard disk space and reducing the speed of operation, the greatest danger lies in virus infringement. Once the virus infringes, the consequences can be disastrous.
The following points should be noted in the operation of logging software:
(1) Understand and be familiar with various parameters such as the name, meaning, normal range of the software user interface, relationship with other parameters, influence on system work, etc., and the initial data is unreasonable. There are many types of logging equipment data and the correlation is large. In addition, many of these data have continuity and accumulation. If the initial data is unreasonable or inappropriate, it will cause the system to work abnormally or make mistakes. For example, if the winch parameter input is inaccurate, the hook height measurement error will be caused. Another example is that the gas measurement window time is not practical, which can cause the gas measurement to be actually too large or too small. For another example, incorrect drilling tool parameters may result in non-judgment of single-rooted items, etc.
(2) Operational modification errors. In the process of using the instrument, it is normal to adjust a certain parameter, but sometimes mistakes in modification will cause system confusion. For example, once an operator wants to fine-tune the well depth, it actually enters the calibration system window when it is actually executed. The height correction factor is entered into the depth of the well, the data is chaotic, and the well logging is in an important stage. For example, when logging at the target layer, it is not arbitrary. Frequent changes to the software's working status, such as modifying parameters, etc., to avoid the software affect the quality of logging.
(3) As far as possible, there is no need to log the special computer installation and logging related software. During the non-logging period, the computer is not used by other personnel to prevent virus infringement. There are thousands of computer viruses today. Logging instrument computer as a dedicated logging computer, should not have been infected with the virus, but the practice has proved that the logging computer is infected with viruses and even run with poison is not an example of two cases. At the same time as logging, the virus takes up CPU time, occupies external memory resources, destroys file data, reduces printing speed, and frequently crashes or makes the system unable to start.
Logging software failures
Fault phenomenon
Inspection Method
Logging work is abnormal
Check the drill bit jitter threshold, the bottom hole threshold, and the trip threshold.
Check if there is a substitute for the elevation pressure data or check if the minimum cyclic pressure threshold is reasonable.
Check the depth of the well and the position of the drill bit.
Check whether the hook load data and the KaVo threshold data are reasonable.
The drill bit position should be equal to the depth of the kerf in the scratch state.
Check whether the drilling tool is normal
There is no change in a measurement parameter
First check whether the parameter has been replaced, whether there is a large smoothing coefficient, and whether the calibration data is correct. If the software
If there is no problem with the settings, check the hardware devices such as the I/O, A/D acquisition board, front-end acquisition circuit, and sensors.
Single / column judgment is not normal
Check whether the threshold data, maximum hook speed limit, and hook data in the threshold settings are reasonable.
Check whether the drill rod upper and lower limit data is normal in the threshold setting.
Check the drill setting and hook height correction factor and drill correction factor in the threshold.
Saved data is abnormal
Check the relevant settings of the interval save and time save and its rationality
Late data is abnormal
Check the size of drilling tools, borehole size, flow, pumping and other related factors are normal.
Check if the late queue data is normal.
Check whether drilling fluid, cuttings uplift coefficient or late arrival time is reasonable and normal.
Gas measurement data is abnormal
Check the initial data related to the gas measurement, such as whether the window time setting and the base value acquisition time are correct. Check whether the curve is normal or not. Verify that the gas calibration curve is correct. Check whether the 2#I/O card is working properly, because abnormal program control will affect the gas measurement data.
The parameter is not in the expected range
Check the calibration data is normal. Check whether the parameter control data setting is reasonable. Check whether this parameter is reasonable about the correction factor.
Whole-meter error
Check the formation pressure data, dcn trend line definition is normal.
Check if there are any problems with the drilling tool and well tool parameters.
Check if the late queue is normal.
In the process of writing this article, we have referenced and excerpted the technical articles of the manufacturer and some oil field counterparts. I am grateful for this. Thanks to the limited level of the authors, errors are unavoidable. Please criticize and correct me. I have summed up some of the work methods and techniques I have outlined above. I hope that everyone can put forward valuable suggestions so that I can better improve my own business and do my part for the development of the company.