CAJ | 학술논문

通过静态观察实验以及岩心动态流动实验，研究了煤岩吸水膨胀对储层的影响，揭示了煤岩水敏机理，提出了防治煤岩水敏的方法。水敏实验结果表明，煤岩很容易发生水敏，对地层产生较大伤害。膨胀实验显示，煤粉在低矿化度的流体中更易发生膨胀。对煤粉充填压实岩心进行的流动实验结果表明，黏土矿物水化膨胀，产生微粒运移，使渗透率下降，对储层的伤害具有不可逆性，而 KCl 对抑制煤岩膨胀具有很好的效果。
통과정태관찰실험이급암심동태류동실험，연구료매암흡수팽창대저층적영향，게시료매암수민궤리，제출료방치매암수민적방법。수민실험결과표명，매암흔용역발생수민，대지층산생교대상해。팽창실험현시，매분재저광화도적류체중경역발생팽창。대매분충전압실암심진행적류동실험결과표명，점토광물수화팽창，산생미립운이，사삼투솔하강，대저층적상해구유불가역성，이 KCl 대억제매암팽창구유흔호적효과。
The influence of water swelling of coal rock on reservoir was studied by means of static observation experiments and core dynamic flow experiments.The water sensitive mechanism of coal was revealed,and the control methods of the coal rock water sensitive was proposed.The experiment results show that water sensitivity of coal rock is easily happened,which damages the strata a lot.Core flow of compacted coal powder is studied,which shows that particle migration is caused by clay mineral hydration swellingand causes the drop of permeability.The damage on reservoir is irreversible,while KCl has a good effect on control of coal rock expansion.