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传统的钻进工艺需要消耗大量的地表水,而干旱缺水地区钻探又经常会遇到缺水问题。针对这一问题,基于孔内地层水局部循环节水思维,研制了脉动器替代地表钻探泵的传统出水阀,利用地表钻探泵缸体中的水经过脉动器后形成水力脉冲驱动孔内潜水泵工作,使孔内地层水实现孔内局部循环完成正常钻进,可节水4/5~19/20。其潜水泵改型为液动冲击器、潜水泵改型成潜孔扬水泵、潜水泵改型成锤击打入式取样器,可实现孔底回转冲击钻进、抽取地下水满足缺水地区及时补充泥浆池供水的需要、在不扰动地层的情况下取得原状土。该节水钻探新技术在钻进过程中基本不消耗地表水,且不扰动地层,并能显著提高机械钻速,在干旱缺水地区具有广阔的应用前景。
The traditional drilling process consumes a large amount of surface water, while drilling in arid and dry areas often encounters the problem of water shortage. In view of this problem, based on the thought of partial circulation water saving in the formation water in the hole, a traditional outlet valve of the pulsator instead of the surface drilling pump was developed. After the surface water in the pump cylinder was pumped through the pulsator, a hydraulic pulse was driven to drive the submerged pump in the hole Work to make the formation of holes within the hole to complete the local circulation of normal drilling, saving 4/5 ~ 19/20. The submersible pump is modified into a hydraulic impactor, the submersible pump is converted into a submersible pump, the submersible pump is transformed into a hammer-driven sampler, which can drill and impact the bottom of the hole, and extract underground water to timely respond to the shortage of water To supplement the need for mud pool water supply, undisturbed strata obtained undisturbed soil. The new water-saving drilling technology in the drilling process basically does not consume surface water, and does not disturb the formation, and can significantly improve the ROP, has a broad application prospect in drought and water shortage areas.