Compatibility method of gas field fracturing flow-back fluid and oilfield reinjection water

• Main Authors: WANG YULONG, WANG XU, MA LIJUN, WANG ZUYI, MI HAIDONG
• Format: Patent
• Language: Chinese; English
• Published: 18.11.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a gas field fracturing flow-back fluid and oilfield reinjection water compatibility method. The method comprises the following steps: (1) the fracturing flow-back fluid firstly enters a reverse osmosis system to be subjected to reverse osmosis treatment; (3) adding a water quality stabilizer into the fracturing flow-back fluid subjected to reverse osmosis treatment; and (4) finally, the fracturing flow-back fluid and oilfield reinjection water are subjected to compatibility. According to the fracturing flow-back fluid treated by the equipment independent treatment method or the equipment and agent composite method, the compatibility of sewage is improved, and the compatibility of the treated fracturing flow-back fluid with various types of water can be improved. 本发明涉及一种气田压裂返排液与油田回注水配伍方法。本发明包括以下步骤：1)压裂返排液先进入反渗透系统，进行反渗透处理；3)在反渗透处理后的压裂返排液中加入水质稳定剂；4)最后将压裂返排液与油田回注水进行配伍。本发明采用设备单独处理或设备与药剂复合方法处理后的压裂返排液，提高提高污水的配伍性，可以满足处理后可以提高与多种类型水的配伍性。