EXPERIMENTAL PREPARATION AND CHARACTERIZATION OF A NOVEL NONIONIC DENDRITIC MACROMOLECULAR DERIVATIVES USING FOR WASTE WATER BASED DRILLING FLUID TREATMENT

摘要

Drilling fluids are essential for oil and gas drilling operations. Water-based drilling fluids will inevitably generate large amounts of drilling waste fluid during recycling. Therefore, timely and efficient disposal of waste water-based drilling fluids is essential for environmental protection. At present, the commonly used disposal methods for waste drilling fluids generally have problems of low processing efficiency, incomplete treatment, high cost, and inadequate environmental protection. In this paper, we proposed an experimental preparation method for a novel nonionic dendritic macromolecular derivative, based on the waste water-based drilling fluid treatment. Firstly, amino dendrimers PATAM-0, PATAM-1 and PATAM-2 were prepared based on the highly regular spatially symmetric structures of dendritic macromolecules, monomer optimization and optimized preparation techniques. Then, the corresponding non-ionic dendritic macromolecular derivative PATAM-AM was developed by end group modification and addition reaction. Meanwhile, we quantitatively analyzed its structure and physicochemical properties. Acrylamide (AM) was preferred as a nonionic monomer for terminal modification of dendritic macromolecular PATAM-1 and PATAM-2, and PATAM has been modified with an aqueous solution polymer. The results showed that PATAM-1 is more suitable as the core of flocculated macromolecules. The prepared PATAM-AM-1 conforms to the basic requirements of the molecular structure of the dendritic macromolecular derivatives. Moreover, we also determined the optimal preparation conditions of PATAM-AM-1 by orthogonal tests.