High-temperature and high-pressure thermal recovery steam injection pipeline decompression device for oil field

• Main Authors: TIAN HONG, DU CHUNDONG, SHU HUAWEN, GAO JIE, YU GUOHUA
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2012
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a high-temperature and high-pressure thermal recovery steam injection pipeline decompression device for an oil field. The decompression device comprises a steam pipeline, wherein stop valves, a decompression valve, a two-stage pressure regulating valve, a safety valve and a gauge valve are arranged on the steam pipeline; the stop valves are high-temperature and high-pressure oblique stop valves; the decompression valve is a self-operated decompression valve and arranged behind the stop valves on the steam pipeline; the two-stage pressure regulating valve is arranged behind the decompression valve on the steam pipeline; the safety valve is arranged behind the two-stage pressure regulating valve on the steam pipeline; and the gauge valve is arranged behind the safety valve on the steam pipeline. By the decompression device, steam pressure in the pipeline can be effectively controlled, can be reduced until the steam pressure accords with the process requirements of production equipmen