What to Consider When Choosing a Location for a Well Drilling Rig

    There are many factors to consider when choosing the location of the well drilling rig. Below, Shandong Yikuang Drilling Technology Co., Ltd. will tell you about the influencing factors. Take a look.

    1. The foundation trench shall be excavated according to the stable slope, and the stratum that is prone to collapse shall be excavated into a stepped shape. The bottom of the foundation trench should be dug to 0.5-1.om above the groundwater level, and the distance between the trench wall and the outer wall of the wellbore is generally 0.6-1m. To ensure the normal construction of the drilling rig.

    2. The pouring blade feet should be selected in the solid soil layer, otherwise it should be tamped to prevent the drilling rig from tilting during the construction process. When the strength of the concrete blade foot reaches 70% of the design strength, the wellbore can be poured on the blade foot.

    3. Use a steel drill to fix the drilling rig firmly to prevent the drilling rig and drilling machinery from shifting at the wellhead during work.

    4. Rotate the rocker to wind the central wire rope of the drilling rig, and use the hook at the end of the rope to hoist the middle slide mark, so that the drill pipe can be lifted when the rocker rotates clockwise. When the sliding gauge is taller than one person, hang the two steel wire ropes on both sides, and hoist the faucet and the main drill pipe together at the same time. The lower ends of the two wire ropes are hung on the rocker. Note that the winding direction is opposite to that of the main rope. One end of the 4-meter-long hose is fastened to the faucet, and the other end is connected to the water outlet of the water pump.

    5. When installing the drilling rig tower, pay attention to the position of the main rope hook to be aligned with the wellhead. Adjust the diesel engine, use a V-belt to connect with the outer groove on the three-slot pulley of the main engine, and the inner groove is connected to the water pump. The water output should be determined to be able to flush the sediment up. Normally, one shot takes 1-10 minutes. The lower end of the water pump is connected to the water inlet pipe, and the lower end of the water inlet pipe is placed in the circulating pool.

    6. When drilling to large sand layers or deep sand layers, the feeding speed should be fast to avoid landslides caused by long-term stirring. If there is a landslide, please mix it with sticky mud into thick mud and pump it in with a pump. If the landslide is too serious, you can fill the block of sticky mud along the wellhead, re-drill it after filling it up, or put mud column mud while drilling. ball.

    7. Reciprocating cycle. When the ideal depth is reached, it is confirmed that there is no mistake. Raise the main rod pipe section to the ground enough to stop the machine. Unload the working drill pipe at the workbench, remove the main anal water hyacinth and the slider, and prepare for The small lifting head is screwed on the working rod, and then the drill pipe is lifted section by section with the middle wire rope. After the first rod is down, the small throttle lifts the main rod. When the pipe joint of the drill bit is exposed to the ground, it can be stopped. Then raise the pipe joint to the top of the work surface, and use two pipe to loosen the drill bit and remove it. The drill pipe with another drill bit installed is lowered down the wellhead to the proper position where it can be connected with the main rod, and is quickly connected with the main rod. After tightening it with a pipe  put it back into the wellhead, pump water, start the machine, and the third rod, only unload The second section of working drill pipe is installed at the lower main rod, and the drill bit does not need to be moved.

    8. Installation: Wrap the pipe with the hole drilled below it with sand net, insert it from the main unit, lift it about half a meter from the bottom, put it on the work surface and cut it off, and use the well head to draw water. After a few minutes, if the observation is normal, the main engine can be removed, the water pump can be installed, the water is officially pumped, and the well drilling is completed.

    9. Allowable deviation of shaft wall thickness: 50mm for reinforced concrete and 30mm for masonry.

    10. The wellbore should be kept stable when it sinks. When displacement or inclination is found, it must be corrected in time. Well drilling rigs in Henan are mainly to solve the problem of lack of water resources. In many remote mountainous areas in China and many areas without running water, well drilling rigs need to be used to fetch water to solve the problem of water sources. China has a vast land and vast resources, and it is even more necessary to use it. Well drilling rigs come in even greater use.

    11. When the drainage method is used for manual construction, the water level in the caisson should drop with the sinking of the wellbore, generally controlled at 0.5-1.0m below the excavation surface. The excavation depth of manual excavation should be 0.3m each time.

    12. For large wells with well wall water inlet, the well wall inlet holes and anti-filter layers must be arranged according to the design requirements, and the water inlet holes should be prevented from being blocked during construction.

    13. The thickness of the reverse filter layer and the particle size of the filter material should be constructed in accordance with the design requirements for large wells with water intake at the bottom of the well. Bottom hole mud and sediment must be removed before laying the reverse filter layer. The filter material should be sieved to remove mud, and the amount should be used for later use.

14. After the well is completed, test pumping should be carried out. Generally, only one large-drawing and deep pumping should be done, and the water level should be stable for no less than 8 hours.

The above is the relevant little knowledge about "What to Consider When Choosing a Location for a Well Drilling Rig", if you have any questions, you can contact our customer service staff of Shandong Yikuang Drilling Technology Co.,Ltd., we will be happy to discuss with you.