The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2024
Filed:
Feb. 05, 2024
Qingdao University of Technology, Qingdao, CN;
China University of Petroleum (East China), Qingdao, CN;
Chang Lu, Qingdao, CN;
Yuhuan Bu, Qingdao, CN;
Shaorui Jing, Qingdao, CN;
Shenglai Guo, Qingdao, CN;
Huajie Liu, Qingdao, CN;
Heng Yang, Qingdao, CN;
Qingdao University of Technology, Qingdao, CN;
China University of Petroleum (East China), Qingdao, CN;
Abstract
Anti-corrosion and low-heat-conduction annulus protection fluid for deep-sea oil and gas exploitation and a preparation method thereof are provided. The annulus protection fluid includes: a polymer solution: 100 parts, clear water III: 100 parts to 500 parts, a thermally-insulating material: 20 parts, a corrosion inhibitor: 1 part to 7 parts, and xanthan gum: 0.3 parts to 0.5 parts, wherein the polymer solution is a mixture of a polymer and clear water II in a mass ratio of 1:(22-28); and the polymer includes the following raw materials: clear water I: 100 parts, an acrylamide: 15 parts to 20 parts, 2-2-methylpropanesulfonic acid: 5 parts to 10 parts, a crosslinking agent: 0.1 parts to 0.3 parts, and an initiator: 0.5 parts to 1 part. The annulus protection fluid exhibits excellent thermal insulation performance and corrosion resistance, and avoids the generation of hydrates and the decomposition of hydrate layers at a wellhead.