新场气田JS_2~1致密储层低伤害压裂液应用研究

RESEARCH ON LOW DAMAGE FRACTUR -ING LIQUID FOR COMPACT CLASTIC - ROCK RESERVOIR JS21 OF XINCHANG GAS FIELD

新场气田JS21气层属典型的致密碎屑岩储层,储层具低渗、强水敏、强贾敏效应等地质特点,存在较大的潜在损害因素,开展水力加砂压裂储层改造技术对压裂液整体性能要求较高.针对其储层地质特征,研制出具耐温抗剪切性好、携砂力强、破胶彻底、滤失小的低伤害压裂液配方体系,在现场应用中取得较好效果.

Reservoir JS21 of Xinchang Gas Field belongs to representative compact clastic rock gas reservoir with geological characters of low permeability , strong water - sensitivity and serious Jamin Effect, where there are potentially damage factor to formation. So, hydraulic sand fracturing of the reservoir has higher requirement to property of fracturing liquid. On the basis of the geological characters of the reservoir, the low damage fracturing fluid system is developed. Through field application, the better fracturing effect is obtained.