METHOD OF DEGASSING AND DEHYDRATION OF OIL AND SEPARATOR FOR METHOD EMBODIMENT Russian patent published in 2003 - IPC

FIELD: oil producing industry; applicable at oil fields for preliminary preparation of oil and purification waste waters. SUBSTANCE: oil degassing and dehydration are carried out with heating in two-sectional separator. Gas-water-oil emulsion is introduced into the first section of separator, and its heating, in the second. Separation from oil of free gas and free water is carried out in the first section, and separation from oil of dissolved gas and emulgated water, in the second section. The first and second sections are communicated through two partitions. The first partition is perforated in upper part and installed with clearance to lower generating line of separator body. The second partition is perforated in upper part for smaller height and installed with larger clearance to generating line of separator body as compared with the first partition, and partially perforated in lower part. From atop, gas passage is provided from the first and second sections to space between partitions through perforation holes of the first and second partitions. Oil passage from the first to second sections is provided through perforation holes of the first partition, through clearance between partitions and under the second partition. Water passage is provided from below under the first and second partitions. Organized in heating section is motion of separated mixture along separator and vertical motion from center to wall of separator body. Separated gas is withdrawn in the second section near, partitions, and oil is withdrawn from the second section. Separator for method embodiment includes horizontal body, heater, transverse perforated partitions, settling section, heating section, branch pipes for intake of gas-water-oil emulsion, withdrawal of gas, water and oil. Branch pipe for input of gas-water-oil emulsion is located in separator first section. Heater is located in central part of the second section - heating section. Heater is made in form of, at least, two rows of parallel pipes located above each other and interconnected by end surfaces with horizontal headers. Upper horizontal header is connected with branch pipe for input of heat carrier, and lower horizontal header is connected with branch pipe for withdrawal of heat carrier. Pipes in each row are installed with inclination from input to withdrawal headers. Transverse perforated partitions are installed on boundary of the first and second sections of separator. Branch pipe for gas withdrawal is located above partitions. Branch pipe for water withdrawal is located in the second section near partitions. Branch pipe for oil withdrawal is located at the end of the second section. EFFECT: higher efficiency of separation process of gas-water-oil emulsion and reduced power consumption. 6 cl, 5 dwg, 3 ex