Inventor

Baojiang Sun

Inventor

Shandong, CN

Overview

2017–2019

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 11 as inventor

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

E21Bprimary

E21BEarth or rock drilling61%

G01NInvestigating or analysing materials by determining their chemical or physical properties17%

B01FMixing, e.g. dissolving, emulsifying or dispersing6%

C04BLime, magnesia6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

G01VGeophysics6%

PatentTitleYear

10,408,014Well killing method and device for a fractured formation without safety pressure window by five-step bullheading2019 10,337,267Control method and control device for drilling operations2019 10,267,129Homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and method thereof2019 9,631,444'Kick information identification apparatus and method assisted for wellbore pressure control during horizontal drilling'2017 9,631,454'Wellbore pressure control system and method for offshore well cementation stages'2017 9,631,450'Surface layer conductor running tool for deep-water well drilling'2017 9,624,420'Foam stabilizer composition, foamed cement slurry and additive composition thereof'2017 9,612,187'Experimental apparatus for studying gas invasion and migration mechanism in oil and gas wellbores'2017 9,605,499'Subsea wellhead pressure indicating and automatic adjusting device for deep-water dual-gradient drilling'2017 9,598,936'Apparatus and method for monitoring hydrate decomposition area under different drilling and production processes'2017 9,594,038'Device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities'2017

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2017–2019Patents assigned to UNIV CHINA PETROLEUM EAST CHINA (11)· patent assignee history

2017Patents assigned to China Univeristy of Petroleum (East China) (1)· patent assignee history

2017–2019Based in Shandong, CN· patent location history

2019Based in Qingdao, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV CHINA PETROLEUM EAST CHINA	11	2017–2019
China Univeristy of Petroleum (East China)	1	2017

Locations

Location	Patents	Span
Shandong, CN	9	2017–2019
Qingdao, CN	2	2019