Synthesis and working mechanism of fluid loss additive by freeze-drying method

ABSTRACT

A liquid fluid loss additive was synthesized by 2-acrylamide-2-methyl propane sulfonic acid (AMPS), N, N-dimethyl acrylamide (DMAM), maleic anhydride (MA), and allyl alcohol polyoxyethylene ether (APEG), which named ADMA (AMPS/DMAM/MA/APEG). The liquid ADMA was freeze-dried and grinded to a white powdery polymer (FDADMA). The FDADMA had less fluid loss volume and superior rheological properties both in fresh water and sea water, while ADMA merely exhibited good filtrate loss control and rheology in fresh water. Besides, the surface morphology of FDADMA was dendritic in sea water after freeze drying, while the ADMA was severely aggregated in sea water.

GRAPHICAL ABSTRACT

KEYWORDS:

• Freeze drying
• sea water
• fluid loss additive
• adsorption
• electrolyte

Disclosure statement

The authors declare that they have no conflict of interest.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [Grant No. 51874210].

Notes on contributors

Yang Xu

Yang Xu who is a doctor, currently works at the School of Chemical Engineering and Technology, Tianjin University. The most recent project is function agents in oil well cement, such as oil well dispersant and fluid loss additive.

Yongjin Yu

Yongjin Yu who is a doctor, currently works at Tianjin University and CNPC Engineering Technology R&D Company Limited. The most recent project is function agents in oil well cement, such as oil well dispersant and fluid loss additive.

Ming Liu

Ming Liu who is a doctor, currently works at the School of Chemical Engineering and Technology, Tianjin University. Their most recent projects are function agents in oil well cement and self-healing in cement composite.

Pengpeng Li

Pengpeng Li who is a master, currently works at the School of Chemical Engineering and Technology, Tianjin University. The most recent project is function agents in oil well cement.

Jintang Guo

Jintang Guo who is a professor, currently works at the School of Chemical Engineering and Technology, Tianjin University. Their most recent projects are function agents in oil well cement, recycle of waste cement, and self-healing in cement composite.