CAJ | 학술논문

为了定量分析胍胶压裂液稠化剂分子对低渗透砂岩气藏储层的伤害情况，借助平行样比对方法，通过基质伤害实验和滤饼伤害实验，对目标储层10块（各5块）代表性岩心进行了研究。研究表明，在气相反排至50 PV时，稠化剂分子造成的伤害（堵塞伤害和滤饼伤害）是主要伤害因素（占总伤害的51．15％）。此外，堵塞伤害先是随着反排体积增加而增大，而后趋于稳定；滤饼伤害是不可逆不可恢复的伤害。并且，堵塞伤害与阈压喉道半径和有效喉道半径均值大小成线性正相关关系。
위료정량분석고효압렬액주화제분자대저삼투사암기장저층적상해정황，차조평행양비대방법，통과기질상해실험화려병상해실험，대목표저층10괴（각5괴）대표성암심진행료연구。연구표명，재기상반배지50 PV시，주화제분자조성적상해（도새상해화려병상해）시주요상해인소（점총상해적51．15％）。차외，도새상해선시수착반배체적증가이증대，이후추우은정；려병상해시불가역불가회복적상해。병차，도새상해여역압후도반경화유효후도반경균치대소성선성정상관관계。
In order to quantitatively analyze the damage caused by thickener molecule of guanidine gum fractu-ring fluid of the low permeability sandstone gas reservoir, matrix damage experiment and filter cake damage experi-ment were conducted by using parallel samples comparison method on 10 representative cores(5 cores for each ex-periment).Research shows that, the damage caused by thickener molecule of guanidine gum is the main damage factor (51.15%of the total damage) when gas reverse discharging to 50 PV.Besides, firstly, the blocking damage increases with the discharge volume increased, then tends to be stable, while, the filter cake damage is irreversible unrecoverable harm which doesn’ t change with the discharge volume.In addition, the blocking damage makes a positive linear correlation with threshold pressure throat radius and the mean size of effective throat radius.