How to put out the fire caused by uncontrolled blo

2022-08-05
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How to put out the fire of out of control blowout

in order to balance the formation pressure during drilling, it is necessary to continuously inject mud into the well, and adjust the mud proportion at any time according to the change of formation pressure, so that the bottom hole pressure is always in balance with the formation pressure in 2013. The out of control blowout of the oil well is caused by the bottom hole pressure being lower than the formation pressure, and the downhole pressure is out of balance. When drilling meets underground oil, gas and water layers, underground oil, gas or water will flow into the mud in the well, speeding up the mud flow and circulation, and the underground oil, gas and water pressure will be out of control, causing the mixture of oil, gas and water to spray to the surface. If the blowout is out of control and cannot be controlled in time, it is easy to cause fire

the standard configuration of the flat jaw is: 0 ⑴ 5, 15 ⑶ 0

the ignition of uncontrolled blowout fire is mainly oil and natural gas, as well as a small amount of nitrogen, hydrogen and sulfur. After the fire, under the action of high temperature and pressure, the wellhead will often be deformed, and the rupture of the blowout pipe will also change the injection direction of oil and gas, resulting in multi-directional fire. At the same time, the crude oil flows and the fire spreads everywhere. The strong radiant heat will burn the surrounding buildings or combustibles, and the fire will expand again

modification technology: it mainly adopts blending, filling, toughening, strengthening, compatibility, chemical resistance - high chemical resistance to make plastic parts more resistant to corrosion, rain, detergent and other materials than metal. In order to avoid losses caused by uncontrolled blowout and fire, some preparatory work needs to be done in the early stage. Before the fire-fighting well blowout, the derrick and drilling equipment within 50m around the blowout must be cleared. The heavy equipment must be towed away. There must be a pool for storing enough fire water. There must be a parking lot for fire engines around the pool to ensure the amount of water supply. It is also necessary to ensure smooth communication at the fire site. Signal lights and flags must be prepared, and contact and command signals must be specified in advance. The area within 50m away from the blowout is the cooling area. The water gun with bracket shall be erected and fixed at a certain distance to prepare for cooling, and the gas concentration and gas toxicity shall be detected at any time

in case of blowout accident, rescue shall be carried out according to the following methods. The first is to cool the equipment, cover and clear the site. When there is no fire after the oil and gas well blowout, the fire brigade on site shall immediately organize several large-diameter water guns to disperse the combustible gas around the wellhead, cover and clear the site, strictly control the ignition source to prevent deflagration, and then set a warning line to determine the warning range. After the fire, the wellhead equipment and devices can be cooled with water, and a certain number of water guns can be organized to press the air flow and flame to one side to form a tight water curtain. Put out the fire immediately after the well site is cleaned. Secondly, use a water gun to cut off and eliminate the flames. The use of water guns and water cannons to cut off and eliminate flames is a prerequisite for changing the wellhead and subduing the blowout. A considerable number of water guns are organized to aim at the root of the flame from different angles to separate the flame from the gas source. Third, internal injection and external injection can inhibit combustion. The halogenated alkane extinguishing agent is injected into the well with high-pressure equipment through the pipeline, and the purpose of extinguishing the fire is achieved with the gas flow ejected from the wellhead. External spraying is to strengthen the fire extinguishing speed. While injecting into the well, use a dry powder gun to spray to the wellhead with a spraying intensity of not less than 20, so as to cover and surround the flame and stop the oil and gas combustion

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