Funding for this research was provided by:
PetroChina Innovation Fund (2018D-5007-0212)
National Science and Technology Major Project (2016ZX05002006)
Northeast Petroleum University Scientific Research Start-up Support
Article History
Received: 12 September 2018
Accepted: 19 April 2019
First Online: 6 May 2019
Compliance with ethical standards
:
: The authors confirm that this article content has no conflict of interest.