地浸采铀矿层伤害评价与区块配伍性研究

INVESTIGATION ON ASSESSMENT OF URANIUM BEARING LAYER DAMAGE AND SUITABILITY TO FIELD BLOCK FOR IN-SITU URANIUM LEACHING

地层伤害降低地浸采铀钻井的抽注液能力。结合地浸采铀工艺的特点,如何有效地预防伤害、保护矿层,最大限度地提高钻井产能和注液能力,开展地层伤害评价与区块配伍性评价研究是地浸采铀一项崭新的课题。本文在对地浸采铀地层伤害进行分类的基础上,结合某矿床地浸采铀实践,提出了地层伤害实验与评价的方法;通过区块配伍性评价,得出区块整体复合解堵改造方案,从而达到消除伤害,保护矿层的目的。

The flowrate of input and output of well for in-situ uranium leaching could be reduced by stratum damage. Considering the in--situ uranium mining technology, how efficently to prevent uranium bearing layer from damage, maximally increases the well production capacity and well input ability, and cartying out investigation on assessment of stratum damage and its field block suitability is a novel project to insitu uranium leaching. Based on classification of reservoir formation damage, and combined with an uranium deposit in situ leaching test, the method for formation damage experiment and assessment is proposed. With the assessment of block suitability, the way to deblock is obtained and the requirement for prevent uranium bearing layer from damage is met.