Liquid-gas separator and drilling blowout accident

• Sep 29, 2021
• Blowout is a phenomenon in which the pressure of oil, natural gas, water and other formation fluids in the drilling process is greater than the pressure in the well, and they rush into the wellbore and eject uncontrollably from the wellhead....

On August 11, 2014, a blowout accident occurred at a drilling site of the PetroChina Changqing Oilfield at the Sixth Oil Production Plant, Wumaozi Township, Dingbian County, Shaanxi Province. This is the third month after the well blowout and land pollution caused by geological pressure during the test of Well 17-34 of the Third Oil Production Plant of Changqing Oilfield in Hequan Town, Dingbian County on June 8 this year. The second blowout accident.
 

 

Blowout is a phenomenon in which formation fluids such as oil, natural gas, and water rush into the wellbore when the pressure is greater than the pressure in the well during the drilling process, and eject uncontrollably from the wellhead. If the huge pressure and shock waves during the eruption cause casualties and property losses, Become a blowout accident. The most serious blowout accident is the combustible gas. If the combustible gas leaks out of the well, it will threaten the safety of the surrounding area, and it will be very difficult to remove the risk and rescue.

The fire is fierce, and the blowout accident not only causes major economic and property losses to the country and individuals, but also causes significant pollution to the soil and surrounding environment on site, and the loss is immeasurable.

 

 

As a special equipment for the primary degassing of gas intrusion drilling fluid, the liquid-gas separator is a very useful mud gas separator. The liquid-gas separator is divided into two types according to the pressure: normal pressure and pressure automatic control. Liquid-gas separator atmospheric pressure hydrogen sulfide-proof drilling fluid liquid-gas separator is made of materials, which can effectively prevent the corrosion of harmful gases and ensure the safe production of man and machine. When the drilling fluid produces gas intrusion, its specific gravity and viscosity will deviate greatly, which cannot meet the drilling requirements. In severe cases, if it is not treated in time, it will cause well kicks and even blowout accidents. The combined use of the liquid-gas separator and the electronic ignition device can ensure the smooth progress of the drilling process.