US 11,674,887 B2
Apparatus and method for testing dynamic sealability of fluid in the downhole minor leaks
Lin Xu, Zhoushan (CN); Xiaohe Huang, Zhoushan (CN); Yue Huang, Zhoushan (CN); Mingbiao Xu, Zhoushan (CN); Yingying Guo, Zhoushan (CN); Huanzhi Feng, Zhoushan (CN); Xijin Xing, Zhoushan (CN); Li Xu, Zhoushan (CN); and Lang Wang, Zhoushan (CN)
Assigned to ZHEJIANG OCEAN UNIVERSITY, Zhejiang (CN); and YANGTZE UNIVERSITY, Hubei (CN)
Filed by Zhejiang Ocean University, Zhejiang (CN); and Yangtze University, Hubei (CN)
Filed on Jul. 29, 2021, as Appl. No. 17/388,126.
Prior Publication US 2023/0032805 A1, Feb. 2, 2023
Int. Cl. G01N 19/04 (2006.01); E21B 47/117 (2012.01)
CPC G01N 19/04 (2013.01) [E21B 47/117 (2020.05)] 11 Claims
OG exemplary drawing
 
1. A sealability testing apparatus, comprising a tester, wherein the tester comprises:
a leakage assembly having:
an upper cap provided with a fluid inlet and a pressure sensor on an upper end of the upper cap, wherein said pressure sensor is capable of recording and transmitting pressure data to a control panel by a pressure data wire;
a leakage element with different size of pores being secured into said upper cap for simulating downhole string leakage on-site;
a retainer being in connection with a lower end of said upper cap for fixing said leakage element; and
a visual bottom cup made of quartz glass, wherein a bottom of said visual bottom cup is open, and said visual bottom cup is temperature-resistant and pressure-resistant for observing a plugging process when sealant flows across said leakage element,
wherein the upper cap, the leakage element, the retainer and the visual bottom cup are arranged coaxially.