Water injection type high-pressure combustor

Abstract

The invention belongs to the technical field of oil exploitation equipment and provides a water injection type high-pressure combustor. The water injection type high-pressure combustor comprises a head part (1), a combustion section (7) and a mixing section (12), wherein the combustion section (7) is arranged in the middle of the water injection type high-pressure combustor, and one end of the combustion section (7) is connected with the head part (1), while the other end is connected with the mixing section (12); the head part (1) is internally provided with an air distributor (2), an oil nozzle (3), a water injection hole (4), an igniter (5) and an air cap (6); the combustion section (7) is a cylindrical structure, and the middle of the combustion section (7) is provided with a combustion chamber (10); the outer side of the combustion chamber (10) is provided with a heat insulation sleeve (8), the outer side of the heat insulation sleeve (8) is provided with a cooling water jacket (9), and a cooling water jacket inlet joint (18) is arranged on the cooling water jacket (9). The water injection type high-pressure combustor has strong reliability and easy operation, and the service life of the equipment is obviously prolonged.

Description

technical field [0001] The invention relates to a high-pressure mixed gas generating device for petroleum thermal exploitation, which belongs to the technical field of petroleum exploitation equipment. Background technique [0002] The oil extraction process can be roughly divided into primary oil recovery, secondary oil recovery and multiple oil recovery. Steam recovery is a typical multiple oil recovery process. Steam oil recovery uses the heating effect of thermal energy to reduce the viscosity of crude oil, and at the same time increase the pressure of the oil layer to a certain extent, thereby improving the oil recovery rate of the oil well. [0003] Since the early 1980s, the practice of using steam thermal recovery technology in my country's oilfields has shown that this technology is more suitable for the low production cycle range of oil layers in formations above 800m. During the production process, the formation pressure continues to drop. After 6 to 8 cycles of...

AI Technical Summary

Problems solved by technology

However, these patented devices still have deficiencies in structural design, which brings many difficulties to practical applications.

Typically: the temperature in the combustion chamber is too high (about 2000°C), and under the condition of high oil well back pressure (as is usually the case in practice), ① the high temperature center of the flame in the combustion chamber gradually moves to the fire-facing surface of the head, and the head The parts are easily burned (such as the end face of the fire, the ignition head of the igniter, the atomizer of the oil nozzle, etc.); The use effect of the lining is significantly reduced, thus greatly shortening the service life of the burner (or gas injector) (sometimes less than one gas injection working day)

And so on, the reliability and economy of the operation of the gas injection device will be seriously affected

Images