CN-118811935-B - Viscosity reduction coalescence separation integrated device

CN118811935BCN 118811935 BCN118811935 BCN 118811935BCN-118811935-B

Abstract

The invention relates to the technical field of oil-water separation in petrochemical industry, in particular to a viscosity reduction coalescence separation integrated device. The device comprises a dynamic and static shearing viscosity reduction unit and a spiral coalescence separation unit, wherein the dynamic and static shearing viscosity reduction unit comprises a viscosity reduction shop window cylinder, a plurality of viscosity reduction rotary disks are inserted into the viscosity reduction shop window cylinder, the viscosity reduction rotary disks are all connected with a lock type central overflow pipe, the spiral coalescence separation unit comprises a coalescence cone cylinder, the coalescence cone cylinder is connected with the viscosity reduction shop window cylinder, the inner side of the coalescence cone cylinder is connected with a tangential inlet disk, the tangential inlet disk is connected with a material coalescence inverted cone, the tail end of the tangential inlet disk is connected with an equal-pitch central overflow pipe, the equal-pitch central overflow pipe is connected with an equal-pitch spiral flow channel, the tail end of the equal-pitch central overflow pipe is connected with a variable-pitch central overflow pipe, and the variable-pitch central overflow pipe is connected with a variable-pitch spiral flow channel. The viscosity reduction, coalescence and separation integrated device provided by the invention solves the problems of high viscosity, difficult separation, serious emulsification, difficult separation and the like of oil well produced liquid.

Inventors

ZHENG GUOXING
SUN YANAN
WEI JIDE
PENG YONGGANG
LI WEIWEI
WANG SIQI
MA ZHIQUAN
ZHOU GUANGLING
ZHAO LIXIN

Assignees

大庆油田有限责任公司
中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230419

Claims (7)

1. An integrated viscosity reducing, coalescing and separating device, comprising: The dynamic and static shearing viscosity reduction unit comprises a viscosity reduction showcase (1), viscosity reduction rotary plates (2), dynamic shearing rotors (3), locking type central overflow pipes (4), rotor fixing caps (5) and viscosity reduction rotary columns (6), wherein the viscosity reduction showcase (1) is provided with a plurality of turntable showcases (14), the viscosity reduction showcase (1) is connected with the viscosity reduction rotary plates (2) through the turntable showcases (14) in an inserting mode, a plurality of viscosity reduction through holes (15) are formed in the side walls of the viscosity reduction showcase (1), viscosity reduction rotary columns (6) are inserted into the viscosity reduction through holes (15), the viscosity reduction rotary columns (6) are connected with the viscosity reduction rotary plates (2), two dynamic shearing rotors (3) are installed in the viscosity reduction rotary plates (2), and the top ends of the dynamic shearing rotors (3) are fixed through the rotor fixing caps (5) and are connected with the locking type rotary plates (4); the turntable cabinet window holes (14) are divided into a plurality of groups, the turntable cabinet window holes (14) of each group are arranged in a staggered way from top to bottom at equal intervals, and the turntable cabinet window holes of each group encircle the viscosity reduction cabinet window cylinder (1) for one circle; the viscosity reduction rotary disc (2) comprises a rotary disc eye-shaped frame (16), rotor support frames (17), static shearing nets (20), rotor rotary columns (18) and locking type central holes (19), one side of the rotary disc eye-shaped frame (16) is provided with viscosity reduction rotary holes (21), two rotor support frames (17) are welded at the bottom of the rotary disc eye-shaped frame (16), a plurality of static shearing nets (20) are welded at the bottom of the rotary disc eye-shaped frame (16), each static shearing net (20) is welded with the rotor support frames (17), the rotor support frames (17) are welded with the rotor rotary columns (18), the two rotor support frames (17) are perpendicular to each other, the locking type central holes (19) are formed in the intersection points of the two rotor support frames (17), the cross section of each static shearing net (20) is triangular, and the circumferential outer contour of each static shearing net (20) is circular; The spiral coalescence-separation unit comprises a coalescence cone (7), a tangential inlet disc (8), a material coalescence back taper (9), a constant pitch spiral runner (10), a constant pitch central overflow pipe (11), a variable pitch central overflow pipe (12) and a variable pitch spiral runner (13), wherein the tangential inlet disc (8) is connected to the inner side of the coalescence cone (7), the tangential inlet disc (8) is connected with the material coalescence back taper (9), the tail end of the tangential inlet disc (8) is connected with the constant pitch central overflow pipe (11), the constant pitch central overflow pipe (11) is connected with the constant pitch spiral runner (10), the tail end of the constant pitch central overflow pipe (11) is connected with the variable pitch central overflow pipe (12), and the variable pitch central overflow pipe (12) is connected with the variable pitch spiral runner (13); The dynamic and static shearing viscosity reduction unit is connected with the spiral coalescence separation unit, the viscosity reduction show window cylinder (1) is detachably connected with the coalescence conical cylinder (7), and the locking type central overflow pipe (4) is connected with the tangential inlet disc (8).
2. The viscosity reduction coalescence separation integrated device according to claim 1, wherein viscosity reduction rotary disk (2) is connected with viscosity reduction rotary column (6) through viscosity reduction rotary hole (21) concentric, viscosity reduction rotary disk (2) is connected with locking-type center overflow pipe (4) through locking-type center hole (19), viscosity reduction rotary disk (2) is connected dynamic shearing rotor (3) through rotor rotary column (18).
3. The viscosity reducing coalescence separation integrated device as recited in claim 1, wherein the dynamic shear rotor (3) comprises a rotor center ring (22), a power screw blade (23) and a conical shear blade (24), the rotor center ring (22) is connected with the rotor spin column (18), the power screw blade (23) is provided with a plurality of blades, each blade of which welds the rotor center ring (22), and the conical shear blade (24) welds the rotor center ring (22).
4. The viscosity reduction coalescence separation integrated device as recited in claim 1, wherein tangential inlet disk (8) includes tangential inlet chamber (25), swirl support chamber (26), swirl cone runner (27), coalescence adsorption baffle (28) and disk center overflow pipe (29), tangential inlet chamber (25) welding swirl support chamber (26), swirl support chamber (26) and coalescence adsorption baffle (28) are connected respectively at the both ends of swirl cone runner (27), coalescence adsorption baffle (28) welding disk center overflow pipe (29), coalescence adsorption baffle (28) are parallel and level with the bottom of swirl support chamber (26), disk center overflow pipe (29) welding is at the center of tangential inlet chamber (25), disk center overflow pipe (29) runs through tangential inlet chamber (25).
5. The viscosity reduction, coalescence and separation integrated device according to claim 4, wherein the outer wall of the rotational flow supporting cavity (26) is connected with the inner wall of the coalescence cone (7), the material coalescence back taper (9) is fixed on the coalescence adsorption baffle (28) and the disc type central overflow pipe (29), and two ends of the disc type central overflow pipe (29) are respectively connected with the lock type central overflow pipe (4) and the equal pitch central overflow pipe (11).
6. The viscosity reduction coalescence separation integrated device according to claim 1, wherein the equal pitch spiral runner (10) and the variable pitch spiral runner (13) are provided with the same number of spiral runners, the directions of rotation of the dynamic shearing rotor (3), the equal pitch spiral runner (10) and the variable pitch spiral runner (13) are the same, the pitch of the variable pitch spiral runner (13) is gradually reduced, and a plurality of array liquid inlets (30) are arranged at the bottom of the variable pitch central overflow pipe (12).
7. The viscosity reduction coalescence separation integrated device according to claim 6, wherein one end of viscosity reduction show window barrel (1) is provided with threads, viscosity reduction show window barrel (1) is connected with coalescence cone barrel (7) through threads, threads are arranged in viscosity reduction through hole (15), and viscosity reduction through hole (15) is connected with viscosity reduction rotary column (6) through threads.

Description

Viscosity reduction coalescence separation integrated device Technical Field The invention relates to the technical field of oil-water separation in petrochemical industry, in particular to a viscosity reduction coalescence separation integrated device. Background Along with the gradual rise of the water content of the oilfield produced liquid, the polymer oil displacement technology is gradually and widely applied, the operation of the polymer oil displacement technology is simple and convenient, the cost is lower, and meanwhile, the related raw materials are easy to obtain. However, in actual production, as the polymer is added, the aqueous phase viscosity of the produced liquid of the oil well is increased, so that the viscosity of the produced liquid containing polymer is increased, the subsequent oil-water two-phase separation is not facilitated, and in addition, the emulsion formed by the oil-water emulsification phenomenon has stronger stability because of the serious oil-water emulsification phenomenon, and the subsequent difficulty of oil-water separation and sewage treatment is increased. In addition, in recent years, the viscosity reduction mode mainly applied to land and offshore oil fields is mechanical viscosity reduction, and the mechanical viscosity reduction technology is to make high-viscosity macromolecules, namely polymer macromolecules, subjected to mechanical shearing action under the action of mechanical shearing or flowing in stratum porous media, so that molecular chain segments are damaged, viscosity is reduced, the cost of the mechanical viscosity reduction technology is low, environmental adaptability is high, the service period is long, the viscosity reduction effect is obvious and stable, however, the mechanical shearing rate in actual production is too high, the emulsification phenomenon is serious, oil-water separation efficiency is low because most oil drops are sheared into small oil drops, and the subsequent oil-water separation difficulty is increased, so that the viscosity reduction, coalescence separation integrated device is provided for the defects. Disclosure of Invention First, the technical problem to be solved The invention provides a viscosity-reducing coalescence-separation integrated device which is developed to overcome the defects of high viscosity, difficult separation, serious emulsification, difficult separation and the like of oil well produced liquid in the prior art. (II) technical scheme In order to solve the above problems, the present invention provides a viscosity reduction, coalescence and separation integrated device, comprising: The device comprises a dynamic and static shearing viscosity reduction unit and a spiral coalescence separation unit, wherein the dynamic and static shearing viscosity reduction unit comprises a viscosity reduction showcase barrel, viscosity reduction rotating discs, dynamic shearing rotors, locking type central overflow pipes, rotor fixing caps and viscosity reduction rotating columns, the viscosity reduction showcase barrel is provided with a plurality of turntable showcases, the viscosity reduction showcase barrel is connected with the viscosity reduction rotating discs through the turntable showcase holes in an inserting mode, a plurality of viscosity reduction through holes are formed in the side wall of the viscosity reduction showcase barrel, each viscosity reduction through hole is internally provided with the viscosity reduction rotating columns, the viscosity reduction rotating columns are connected with the viscosity reduction rotating discs, two dynamic shearing rotors are arranged in each viscosity reduction rotating disc, the top ends of the dynamic shearing rotors are fixed through the rotor fixing caps, and the viscosity reduction rotating discs are connected with the locking type central overflow pipes; The spiral coalescence-separation unit comprises a coalescence cone, a tangential inlet disc, a material coalescence back taper, an equal-pitch spiral flow channel, an equal-pitch central overflow pipe, a variable-pitch central overflow pipe and a variable-pitch spiral flow channel, wherein the inner side of the coalescence cone is connected with the tangential inlet disc, the tangential inlet disc is connected with the material coalescence back taper, the tail end of the tangential inlet disc is connected with the equal-pitch central overflow pipe, the equal-pitch central overflow pipe is connected with the equal-pitch spiral flow channel, the tail end of the equal-pitch central overflow pipe is connected with the variable-pitch central overflow pipe, and the variable-pitch central overflow pipe is connected with the variable-pitch spiral flow channel; the dynamic and static shearing viscosity reduction unit is connected with the spiral coalescence separation unit, the viscosity reduction show window cylinder is detachably connected with the coalescence conical cylinder, and the lock type central overflow