河南油田工程技术研究院;
Engineering Technology Institute of Henan Oil Field ; 2 .
中国石油西北分公司工程技术研究院;
Engineering Technology Institute of Sinopec Northwest Company ; 2 .
中国石油辽河石油勘探局工程技术研究院;
Engineering and Technology Research Institute of PetroChina Liaohe Petroleum Exploitation Bureau ; 3 .