Properties of a novel imbibition polymer with ultra-high wetting ability as a fracturing fluid system†,New Journal of Chemistry

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Properties of a novel imbibition polymer with ultra-high wetting ability as a fracturing fluid system†
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2019-11-28 , DOI: 10.1039/c9nj03515j
Jinhao Gao _{1,

2,

3,

4} , Guanghua Zhang _{1,

2,

3,

4} , Lei Wang _{1,

2,

3,

4} , Xiaojia Xue _{4,

5,

6,

7} , Li Ding _{4,

5,

6,

7} , Xianwen Li _{4,

5,

6,

7} , Xiaojuan Lai _{1,

2,

3,

4} , Chuanqing Huang _{1,

2,

3,

4}

Affiliation

A novel fracturing fluid system with wettability was prepared. XRD and TGA of the polymer were measured. Rheology and SEM experiments showed that the fracturing fluid had a dense network structure. The microstructures of the gel breaking fluid were obtained using SEM and TEM tests, which demonstrated more obvious crosslinking. Contact angle and wetting function of the gel breaking fluid were evaluated on sandstone. The NFW fracturing fluid showed excellent rheological properties at 90 °C. The surface tension of the gel breaking fluid was relatively low, being 20 mN m⁻¹. The W_A, BET data and zeta potential of the NFW gel breaking fluid suggested that the material was absorbed on the sandstone surface and a bilayer was formed. Meanwhile, CT and AFM studies indicated that the imbibition effect of the gel breaking fluid could obviously be observed on the sandstone. The contact angle increased to 146° when the sandstone was immersed in solution, which suggested that the wettability of the rock was changed. The imbibition efficiency of NFW is higher than that of water. Thus, this fracturing fluid with wettability could be an alternative for development in tight oil reservoirs.

中文翻译：

具有超高润湿能力的新型吸水聚合物作为压裂液体系的性能†

制备了具有润湿性的新型压裂液体系。测量了聚合物的XRD和TGA。流变学和SEM实验表明，压裂液具有致密的网状结构。使用SEM和TEM测试获得了破胶液的微观结构，证明了更明显的交联。在砂岩上评估破胶液的接触角和润湿功能。NFW压裂液在90°C时显示出优异的流变性。破胶液的表面张力相对较低，为20mNm ^-1。在W_一NFW破胶液的BET数据和zeta电位表明该材料被吸收在砂岩表面上并形成了双层。同时，CT和AFM研究表明，在砂岩上可以明显观察到破胶液的吸收作用。当砂岩浸入溶液中时，接触角增加到146°，这表明岩石的润湿性发生了变化。NFW的吸水效率高于水。因此，这种具有润湿性的压裂液可以作为致密油藏开发的替代方案。

更新日期：2019-12-23

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