新型铝离子无水压裂液的制备及其性能

页岩气等非常规油气资源储层物性差、敏感性严重,压裂过程中往往会消耗大量水资源,同时其返排液的处理也会造成巨大的环保压力.为此,需要研究一种新型的低碳烷烃无水压裂液.在低碳烷烃基液中,通过磷酸酯胶凝剂与新型高效、低成本铝离子交联剂交联制备无水压裂液,相比于铁离子交联剂,铝离子交联剂体系稳定性更强.实验结果表明,该无水压裂...

Preparation and properties of a new aluminum ion hydraulic fracturing fluid

Unconventional oil and gas resources, such as shale gas, are characterized by poor physical properties and serious sensitivity. A large amount of water resources consumed in the fracturing process, and the treatment of flowback fluid will also cause huge environmental pressure. Therefore, a new type of low carbon alkane anhydrous fracturing fluid is studied in this paper. It is prepared by cross-linking a new type of phosphate ester gelling agent with a new high-efficiency, low-cost aluminum ion cross-linking agent in a low-carbon alkane-based liquid, compared with the iron ion cross-linking agent, aluminum ion crosslinking agent system stability, the experiment shows that the water fracturing fluid has a good rheological property, gel breaking and carrier performance, temperature tolerance of up to 145 ℃, and meet the needs in high temperature oil field reservoir reconstruction. Because the fracturing fluid gel system does not contain water,it has good compatibility with the reservoir and little damage to the reservoir, so it has a good development prospect for the development of unconventional sensitive reservoir.