CN210764657U

CN210764657U - Three-phase separator for oil-water sand of return liquid of well washing of water injection well

Info

Publication number: CN210764657U
Application number: CN201921491417.7U
Authority: CN
Inventors: 胡锋
Original assignee: Xinjiang Petroleum Administration Co ltd; China National Petroleum Corp
Current assignee: Xinjiang Petroleum Administration Co ltd; China National Petroleum Corp
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-06-16
Anticipated expiration: 2029-09-09

Abstract

The utility model relates to an oil field water injection well-flushing operation technical field, a liquid oil water sand three-phase separator is returned in water injection well-flushing, include about along to the jar body that sets up, jar body left end is equipped with the water inlet, jar internal bottom is provided with the sand trap to setting up around a plurality of pieces along the axially parallel interval, every sand trap's front side, the trailing flank reaches down the terminal surface all with jar internal wall fixed connection, jar internal bottom interval is provided with a plurality of sand discharge mouth, jar internal vortex sand removal device that has set gradually from a left side to the right side, current stabilizer and TP board group, vortex sand removal device and water inlet are linked together, be equipped with the oil-out on the jar body that corresponds TP board group top position, be equipped with the delivery port on the jar body that corresponds baffle right side position, jar body top is. The utility model has the advantages of reasonable and compact structure, convenient to use, its setting through flowing sand removing device, current stabilizer and TP board group to it is high to have separation efficiency, separates effectual characteristics.

Description

Three-phase separator for oil-water sand of return liquid of well washing of water injection well

Technical Field

The utility model relates to an oil field water injection well-flushing operation technical field is a liquid oil water sand three-phase separator is returned in water injection well-flushing.

Background

The oil field water injection well washes out shaft sediment through well washing, which is an important means for preventing suspended matters from blocking the stratum and ensuring normal water injection of the water injection well. The oil-water-sand three-phase separation technology is one of key technologies of closed well washing operation of an oil field water injection well, and an existing oil-water-sand three-phase separator is poor in oil-water-sand separation effect and low in oil-water-sand separation efficiency, so that the well washing operation time of the water injection well is long.

Disclosure of Invention

The utility model provides a water injection well flushing returns play liquid oil water sand three-phase separator has overcome above-mentioned prior art not enough, and it can effectively solve current oil water sand three-phase separator and have profit sand separation inefficiency, the poor problem of separation effect.

The technical scheme of the utility model is realized through following measure: a three-phase separator for oil-water sand in the return liquid of well-flushing of water injection well is composed of a tank body with water inlet at left end, several sand baffles axially parallel and arranged at intervals at bottom of tank body, several sand discharging holes at bottom of tank body, a cyclone sand-removing unit, a flow stabilizer and a TP plate set sequentially arranged from left to right in the tank body, and a fluid channel between two adjacent inclined single plates, the inclined single plate on the rightmost side is fixedly connected with the inner wall of the tank body through a vertically arranged partition plate, the front side face, the back side face and the upper end face of the partition plate are fixedly connected with the inner wall of the tank body, the lower end face of the partition plate is fixedly connected with the upper end face of the inclined single plate on the rightmost side, the lower end face of the inclined single plate on the leftmost side is fixedly connected with the upper end face of one of the sand blocking plates, an oil outlet is formed in the tank body corresponding to the position above the TP plate group, a water outlet is formed in the tank body corresponding.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the cyclone desanding device can comprise a cylindrical shell and a conical shell which are coaxially arranged, the bottom of the cylindrical shell is fixedly connected with the top of the conical shell, a water inlet pipe communicated with a water inlet is arranged on the side wall of the cylindrical shell, the water inlet pipe is tangent to the inner wall of the cylindrical shell, an overflow port is arranged at the top of the cylindrical shell, a sand outlet is arranged at the bottom of the conical shell, a baffle is connected to the conical shell through a connecting rod, and the baffle is located below the sand outlet.

The flow stabilizing device can comprise a supporting plate, a plurality of first flow stabilizing plate rows and a plurality of second flow stabilizing plate rows, the first flow stabilizing plate rows and the second flow stabilizing plate rows are alternately arranged at intervals in the left-right direction, the first flow stabilizing plate rows comprise a plurality of first right-angle flow stabilizing plates which are arranged at intervals in the front-back direction and in parallel, the second flow stabilizing plate rows comprise a plurality of second right-angle flow stabilizing plates which are arranged at intervals in the front-back direction and in parallel, the right-angle end of each first right-angle flow stabilizing plate is arranged towards the left and fixedly connected with the bottom and the supporting plate, the right-angle end of each second right-angle flow stabilizing plate is fixedly connected with the bottom, the right-angle end of each second right-angle flow stabilizing plate is arranged between two adjacent first right-angle flow stabilizing plates, and the lower end face of the supporting plate is fixedly connected with the upper end face of one of the sand blocking plates.

The tank body top corresponding to the position between the swirling flow desanding device and the flow stabilizing device can be provided with a first quick-opening manhole, the tank body top corresponding to the position between the flow stabilizing device and the TP plate group is provided with a rotary cover manhole, the right end of the tank body is provided with a second quick-opening manhole, and the tank body interiors corresponding to the positions of the quick-opening manhole and the rotary cover manhole are respectively provided with a crawling ladder.

The right end of the tank body can be provided with a back washing port, and a back washing pipeline communicated with the back washing port is arranged in the tank body.

The bottom of the tank body can be provided with a saddle.

The utility model has the advantages of reasonable and compact structure, convenient to use, its setting through flowing sand removing device, current stabilizer and TP board group to it is high to have separation efficiency, separates effectual characteristics.

Drawings

Fig. 1 is a schematic structural view of the preferred embodiment of the present invention.

Fig. 2 is a schematic top view of the flow stabilizer shown in fig. 1.

The codes in the figures are respectively: the device comprises a tank body 1, a water inlet 2, a sand baffle 3, a sand discharge port 4, a TP plate group 5, a partition plate 6, an oil outlet 7, a water outlet 8, a pressure relief valve 9, a cylindrical shell 10, a conical shell 11, a water inlet pipe 12, a connecting rod 13, a baffle 14, a supporting plate 15, a first right-angle flow stabilizer 16, a second right-angle flow stabilizer 17, a first quick-opening manhole 18, a rotary cover manhole 19, a ladder stand 20, a second quick-opening manhole 21, a back flushing port 22, a back flushing pipeline 23 and a saddle 24.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in attached figures 1 and 2, the well-flushing return-flow oil-water-sand three-phase separator for the water injection well comprises a tank body 1 arranged along the left-right direction, a water inlet 2 is arranged at the left end of the tank body 1, a plurality of sand blocking plates 3 arranged along the front-back direction are arranged at the bottom in the tank body 1 along the axial direction in parallel at intervals, the front side, the rear side and the lower end of each sand blocking plate 3 are fixedly connected with the inner wall of the tank body 1, a plurality of sand discharge ports 4 are arranged at intervals at the bottom in the tank body 1, a swirling flow sand removing device, a flow stabilizing device and a TP plate set 5 are sequentially arranged in the tank body 1 from the left to the right, the swirling flow sand removing device is communicated with the water inlet 2, the TP plate set 5 comprises a plurality of inclined single plates arranged along the axial direction of the tank body 1 at intervals, each inclined single plate is arranged along the front-back direction, the front side and the rear side of each inclined single plate, form the fluid passage of from left to right tilt up between two adjacent slope veneers, a slope veneer on the rightmost side is through baffle 6 and the 1 inner wall fixed connection of jar body of a vertical setting, baffle 6 preceding, trailing flank and up end all with jar 1 inner wall fixed connection, baffle 6 lower terminal surface and a slope veneer up end fixed connection on the rightmost side, terminal surface and 3 up end fixed connection of one of them sand board under the slope veneer on the leftmost side, be equipped with oil-out 7 on the jar body 1 of corresponding TP board group 5 top position, be equipped with delivery port 8 on the jar body 1 of corresponding 6 right side positions of baffle, jar body 1 top is equipped with relief valve 9. According to the requirement, the cyclone desanding device, the flow stabilizing device and the TP plate group 5 can adopt the prior known technology, the solid sand particles can be rapidly separated from oil and water through the arrangement of the cyclone desanding device, the oil-water mixed liquid flow passing through the flow stabilizing device is a stable flow through the arrangement of the flow stabilizing device, and further the subsequent oil-water separation is facilitated, the separation effect is mentioned, the oil-water mixed liquid can only pass through the fluid channel in the TP plate group 5 from top to bottom and then can flow into the area of the tank body 1 at the right side of the TP plate group 5 through the arrangement of the TP plate group 5, when the oil-water mixed liquid flows through the fluid channel, the oil phase is gathered into a large liquid mass on the surface of the TP plate group 5 by small liquid drops, when the oil-water mixed liquid reaches a certain size, the oil rises to the liquid surface along the surface of the TP plate group 5 and is discharged through, and the oil-water separation effect is good, the pressure in the tank body 1 can be prevented from being too high through the arrangement of the pressure release valve 9, and the smooth operation of the separation operation is ensured. The utility model has the advantages of high separation efficiency and good separation effect.

The oil-water-sand three-phase separator for the return liquid of the well washing of the water injection well can be further optimized or/and improved according to actual requirements:

as shown in the attached figure 1, the rotational flow desanding device comprises a cylindrical shell 10 and a conical shell 11 which are coaxially arranged, the bottom of the cylindrical shell 10 is fixedly connected with the top of the conical shell 11, a water inlet pipe 12 communicated with a water inlet 2 is arranged on the side wall of the cylindrical shell 10, the water inlet pipe 12 is tangent to the inner wall of the cylindrical shell 10, an overflow port is arranged at the top of the cylindrical shell 10, a sand outlet is arranged at the bottom of the conical shell 11, a baffle 14 is connected to the conical shell 11 through a connecting rod 13, and the baffle 14 is located below the sand outlet. From this when oil water sand three-phase material with tangential direction from the inlet tube 12 enter into the whirl sand removal device in, the solid sand grain that the quality is big can sink and discharge from the sand outlet, and oil water mixture can discharge from the overflow mouth to realize the separation of oil water and sand grain fast, can prevent through setting up of baffle 14 in addition that sand grain below the sand outlet from piling up, and then guaranteed the sand discharge speed.

As shown in the attached drawings 1 and 2, the flow stabilizer comprises a support plate 15, a plurality of first flow stabilizer rows and a plurality of second flow stabilizer rows, the first flow stabilizer rows and the second flow stabilizer rows are alternately arranged at intervals in the left-right direction, the first flow stabilizer rows comprise a plurality of first right-angle flow stabilizers 16 which are arranged at intervals in the front-back direction and are arranged in parallel, the second flow stabilizer rows comprise a plurality of second right-angle flow stabilizers 17 which are arranged at intervals in the front-back direction and are arranged in parallel, the right-angle end of each first right-angle flow stabilizer 16 is arranged towards the left and is fixedly connected with the bottom and the support plate 15, the right-angle end of each second right-angle flow stabilizer 17 is fixedly connected with the support plate 15, the right-angle end of each second flow stabilizer 17 is positioned between two adjacent first right-angle flow stabilizers 16, and the lower end face of the support plate 15 is fixedly connected with the upper end face of one of the sand baffle 3. The arrangement of the supporting plate 15 and the sand blocking plate 3 enables oil-water mixed liquid to flow through the flow stabilizing device, and the flow stabilizing devices of the first flow stabilizing plate row and the second flow stabilizing plate row can enable the flow of the oil-water mixed liquid after passing through the flow stabilizing device to be changed into stable flow, so that subsequent oil-water two-phase rapid separation is facilitated.

As shown in figure 1, a first quick-opening manhole 18 is arranged at the top of the tank body 1 corresponding to the position between the swirling flow desanding device and the flow stabilizing device, a rotary cover manhole 19 is arranged at the top of the tank body 1 corresponding to the position between the flow stabilizing device and the TP plate group 5, a second quick-opening manhole 21 is arranged at the right end of the tank body 1, and crawling ladders 20 are respectively arranged inside the tank body 1 corresponding to the positions of the quick-opening manhole and the rotary cover manhole 19. Thereby facilitating cleaning of the inside of the can body 1.

As shown in the attached figure 1, the right end of the tank body 1 is provided with a back washing port 22, and a back washing pipeline 23 communicated with the back washing port is arranged inside the tank body 1. Thereby facilitating the discharge of the sand particles at the bottom of the tank 1.

As shown in figure 1, the bottom of the tank 1 is provided with a saddle 24.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. A three-phase separator for oil-water sand in the return liquid of well-flushing of water injection well is composed of a tank with left and right water inlets, several sand-blocking plates with front and back ends, several sand-discharging holes, a cyclone sand-removing unit, a flow stabilizer and a TP plate set sequentially arranged in said tank from left to right, said cyclone sand-removing unit is communicated with water inlets, said TP plate set includes several inclined single plates parallel to tank and with intervals, each inclined single plate is arranged in front and back direction, the front and back sides of each inclined single plate are sealed with the inner wall of tank, and the upper and lower end surfaces of each inclined single plate have gaps with the inner wall of tank, the inclined single plate on the rightmost side is fixedly connected with the inner wall of the tank body through a vertically arranged partition plate, the front side face, the back side face and the upper end face of the partition plate are fixedly connected with the inner wall of the tank body, the lower end face of the partition plate is fixedly connected with the upper end face of the inclined single plate on the rightmost side, the lower end face of the inclined single plate on the leftmost side is fixedly connected with the upper end face of one of the sand blocking plates, an oil outlet is formed in the tank body corresponding to the position above the TP plate group, a water outlet is formed in the tank body corresponding.

2. The three-phase separator for the oil-water-sand return liquid of the well-flushing of the water injection well of claim 1, wherein the cyclone desanding device comprises a cylindrical shell and a conical shell which are coaxially arranged, the bottom of the cylindrical shell is fixedly connected with the top of the conical shell, a water inlet pipe communicated with a water inlet is arranged on the side wall of the cylindrical shell, the water inlet pipe is tangent to the inner wall of the cylindrical shell, an overflow port is arranged on the top of the cylindrical shell, a sand outlet is arranged on the bottom of the conical shell, a baffle plate is connected to the conical shell through a connecting rod, and the baffle plate is positioned below the.

3. The water injection well flushing return liquid oil-water-sand three-phase separator of claim 1 or 2, the flow stabilizing device is characterized by comprising a supporting plate, a plurality of first flow stabilizing plate rows and a plurality of second flow stabilizing plate rows, wherein the first flow stabilizing plate rows and the second flow stabilizing plate rows are alternately arranged at intervals in the left-right direction, the first flow stabilizing plate rows comprise a plurality of first right-angle flow stabilizing plates which are arranged at intervals in the front-back direction and in parallel, the second flow stabilizing plate rows comprise a plurality of second right-angle flow stabilizing plates which are arranged at intervals in the front-back direction and in parallel, the right-angle end of each first right-angle flow stabilizing plate is arranged towards the left, the bottom of each first right-angle flow stabilizing plate is fixedly connected with the supporting plate, the right-angle end of each second right-angle flow stabilizing plate is fixedly connected with the bottom of each second right-angle flow stabilizing plate, the right-angle end of each second right-angle flow stabilizing plate is positioned between two adjacent first right-angle flow stabilizing plates, and the lower end face.

4. The three-phase separator for oil, water and sand return of well washing of water injection well according to claim 1 or 2, characterized in that a first quick-opening manhole is arranged at the top of the tank body corresponding to the position between the cyclone sand removing device and the flow stabilizer, a revolving cover manhole is arranged at the top of the tank body corresponding to the position between the flow stabilizer and the TP plate group, a second quick-opening manhole is arranged at the right end of the tank body, and crawling ladders are respectively arranged inside the tank body corresponding to the positions of the quick-opening manhole and the revolving cover manhole.

5. The three-phase separator for oil-water-sand return of well washing of water injection well according to claim 3, characterized in that a first quick-opening manhole is arranged at the top of the tank body corresponding to the position between the cyclone sand removing device and the flow stabilizer, a revolving cover manhole is arranged at the top of the tank body corresponding to the position between the flow stabilizer and the TP plate group, a second quick-opening manhole is arranged at the right end of the tank body, and a ladder stand is respectively arranged inside the tank body corresponding to the positions of the quick-opening manhole and the revolving cover manhole.

6. The three-phase separator for oil, water and sand of return effluent of well washing of water injection well according to claim 1, 2 or 5, characterized in that the right end of the tank body is provided with a back flushing port, and the inside of the tank body is provided with a back flushing pipeline communicated with the back flushing port.

7. The three-phase separator for oil-water-sand of return fluid of well-flushing of water injection well of claim 3, wherein the right end of the tank body is provided with a back-flushing port, and the inside of the tank body is provided with a back-flushing pipeline communicated with the back-flushing port.

8. The three-phase separator for oil-water-sand of return fluid of well-flushing of water injection well of claim 4, wherein the right end of the tank body is provided with a back-flushing port, and the inside of the tank body is provided with a back-flushing pipeline communicated with the back-flushing port.

9. The three-phase separator of oil, water and sand of the return liquid of the well-flushing of the water injection well according to the claim 1 or 2 or 5 or 7 or 8 is characterized in that the bottom of the tank body is provided with a saddle.

10. The three-phase separator for the oil-water-sand of the return liquid of the well-flushing of the water injection well according to claim 3 is characterized in that a saddle is arranged at the bottom of the tank body.