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Inventor

Youqiang Liao

Inventor
Qingdao, CN

Overview

1→
Patents
2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 1 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
10,408,014Well killing method and device for a fractured formation without safety pressure window by five-step bullheading2019

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2019Patents assigned to UNIV CHINA PETROLEUM EAST CHINA (1)· patent assignee history
2019Based in Qingdao, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
UNIV CHINA PETROLEUM EAST CHINA12019
Locations
LocationPatentsSpan
Qingdao, CN12019