As you are aware, PetroChina is a subsidiary largely owned by the China National Petroleum Corporation (CNPC), which is itself a state-owned entity controlled by thegovernmentofthe People's Republic of China (PRC).
In the face of such developments, to say nothing of what amount to acts of war as sustained PRC government-linked hacker attacks on public and private sector computer networks, the Obama administration has maintained what can only be described as a cordially accommodating, business-as-usual approach to Beijing.