水泵泡沫增压钻探新技术在宁夏中南部干旱带的应用研究

Application of new technique of water pump foam pressure-increasing drilling in the arid region of central-south Ningxia

宁夏中南部干旱带水资源贫乏,局部地区人畜饮水极端困难,在抗旱打井钻探过程中由于施工用水严重缺乏而无法施工.水泵泡沫增压钻探技术是一项全新的、用于针对特殊的自然地理条件以及复杂的地质条件的钻井技术,它利用均匀、稳定的泡沫流体作为钻井时的循环介质,利用其泡沫增压后,孔内上返泡沫形成循环,井内水与泡沫喷出井口以达到洗井目的.适用于在严重干旱缺水地区断层、裂隙发育、岩石较破碎的基岩地层施工,可以减少孔内不良事故的发生,解决钻进漏失的问题,增加单井出水量,减少施工用水量,提高了钻进效率,降低了成本.在极度缺水的宁夏南部干旱带钻井施工中,解决了使用常规钻进方法难以解决的问题。

Water resource is shortage in the arid region of central-south Ningxia, the drinking of people and domestic animal is extremely difficult in some regions, because of serious lack of water, drilling can＇t be under construction in the process of anti-drought drilling well. The technique of water pump foam pressure-increasing drilling is a very new drilling-well used for special natural geographical and complicated geological condition, it makes use of even and stable foam fluid as circular media in the drilling, when foam increases pressure, upward foam forms circulation, internal water of well and foam spouts out from the well mouth to attain washing well. The technique is suitable for construction in the broken bedrocks which have much fault and fissure in serious lack of water regions, can try to avert accident in drilling hole, resolves leak problem in drilling hole, increases water quantity of single well, reduces constructional water consumption, raises drilling efficiency, lowers cost. The new technique resolves the problem of drilling that cannot resolves in normal way in serious lack of water regions in southern Ningxia. A new technology has found out in probe into drilling construction in serious lack of water regions, it makes notable contribution to the drinking of people and domestic animal in the arid region of middle-southern Ningxia.