CN103288288A

CN103288288A - Moveable well washing water wellhead circulation treatment apparatus

Info

Publication number: CN103288288A
Application number: CN2013102509914A
Authority: CN
Inventors: 王凤霞; 许冬华; 宋广英; 赵刚
Original assignee: Individual
Current assignee: Daqing Dry Run River Water Environmental Protection Technology Co ltd
Priority date: 2013-06-24
Filing date: 2013-06-24
Publication date: 2013-09-11
Anticipated expiration: 2033-06-24
Also published as: CN103288288B

Abstract

The invention relates to a mobile well-flushing water wellhead circulation treatment device. The device processes the spit out of the water injection well on site, and re-injects directly through the high-pressure pump truck after the treatment is qualified, and collects and utilizes the crude oil spit out by the water injection well, saving water and energy. The device includes two-stage reaction of flocculation and coagulation and one-stage oil recovery. Iron powder is added to the flocculation at the same time, and the flocs in the sewage are quickly settled and collected by magnetic adsorption, and the treated clean water is directly reinjected. The invention is mobile, driven by a DC motor, and does not need to rely on an external power supply. It is especially suitable for field construction operations. It can treat the sewage spit out of the water injection well on site. After the treatment is qualified, it can be directly re-injected into the water injection well by a high-pressure pump truck, saving water for well washing. There is no need for the cost of tanker transportation, and it has the characteristics of fast processing speed, no power supply, multi-purpose machine, low processing cost and energy saving.

Description

Movable type well-flushing well mouth cyclic processing device

Technical field

The present invention relates to the oil field flushing water treatment device, be specifically related to a kind of movable type well-flushing well mouth cyclic processing device.

Background technology

In the disposing polluted water in oil field, the processing of well-flushing water is the difficult problem of disposing polluted water in oil always, water injection well in oil fields is through after a while operation, need carry out backwash to water injection well with clear water, because the water yield of water injection well backwash and the uncertainty of water quality, a lot of crude oil may spue in the water injection well pressure release simultaneously, bring certain difficulty for the processing of well-flushing water, also cause the waste of resource, distribution distance owing to water injection well relatively disperses simultaneously, need use the tank car roping by water injection well in clear water, cooperate the high pressure pump truck that water injection well is carried out backwash simultaneously, the sewage that backwash is come out also needs roping to appointed place to focus on, and namely the wasting manpower and material resources also very easily causes the environmental protection accident.

Summary of the invention

In order to overcome disadvantages of background technology, the invention provides a kind of movable type well-flushing well mouth cyclic processing device, this device is handled at the scene to the liquid that spues of water injection well, handle qualified after directly through the re-injection of high pressure pump truck, the crude oil that water injection well spues is collected utilization, reduce the task of tank car roping, saved water source and the energy simultaneously.

Technical scheme of the present invention is: this movable type well-flushing well mouth cyclic processing device comprises the skid base, each parts of this device all are fixedly connected on the skid base, wherein, place the outer rounded shoulders of the cyclone separator on the skid base to be communicated with water inlet pipe, the top center of cyclone separator is communicated with upflow tube, the conical lower portion of cyclone separator has pipeline to be communicated in the last cylinder shoulder of retort A by the tandem static mixing tank, retort A bottom has the serpentine pipe to be communicated in the last cylinder shoulder of retort B, pipeline connection is arranged at the bottom of retort B and sludge box bottom, the conical lower portion of sludge box is equipped with sedimentation magnetic adsorption zone outward, the sludge box bottom is communicated with the spiral pump import, the spiral pump outlet has pipeline to be communicated with mud case waist outer wall, there is the supernatant liquor run-off in the outside, mud case bucket wall upper edge, the conical lower portion of mud case is equipped with mud magnetic adsorption zone outward, the outside, retort B bucket wall upper edge has clear water run-off, clear water run-off to have pipeline to be communicated with water tank upper.

Above-mentioned retort A and retort B are the tubbiness thin-wall construction of upper shed, are equipped with agitator at this tubbiness center, and sludge box and mud case are the tubbiness thin-wall construction of bottom taper.

Above-mentioned supernatant liquor run-off and clear water run-off are barrel outside, wall upper edge by the circular water channel in " L " shape thin plate besieged city, and wherein, supernatant liquor run-off bottom has return line to lead in retort A top.

Also be equipped with coagulating agent medicine-chest and flocculation agent medicine-chest on the above-mentioned skid base, the coagulating agent medicine-chest has pipeline connection volume pump B import, volume pump B outlet has pipeline connection in the pipe center of static mixer, the flocculation agent medicine-chest has pipeline connection volume pump A import, volume pump A outlet has pipeline connection in the pipe center of serpentine pipe, described retort A which is provided with worm conveyor, and the discharge port of worm conveyor is positioned at the opening top circumference range of retort A.

Above-mentioned spiral pump, volume pump A, volume pump B, worm conveyor and agitator drive by direct-current machine.

Above-mentioned sedimentation magnetic adsorption zone and mud magnetic adsorption zone are filled with the sheet Nd-Fe-B permanent magnet in its scope.

The present invention has following beneficial effect: the crude oil that this device at first spues water injection well is collected, avoided the waste of the energy, add meticulous iron powder and coagulating agent by giving in the sewage, make sewage abolish stability fast, increase the flco proportion after sewage breaks surely, adding the bridging action that flocculation agent makes the floc sedimentation contain iron powder take full advantage of flocculation agent again grows up rapidly, that grows up contains iron powder flco rapid subsidence under the effect of the Nd-Fe-B permanent magnet of magnetic adsorption zone, and the mud after the sedimentation is discharged through spiral pump and entered the sludge settling tank stores, and mud falls to the bottom through the magnetic adsorption zone, supernatant liquor is back to front end, this device drives with direct-current machine for portable, need not to rely on external power source, especially be fit to the field construction operation, but the sewage that the site disposal water injection well spues handles directly being recycled in the water injection well through the high pressure pump truck after qualified, saves the well-flushing water, need not the cost of tank car roping, it is fast to have processing speed, need not power supply, but a tractor serves several purposes, processing cost is low, the characteristics of save energy.

Description of drawings:

Accompanying drawing 1 is structural representation of the present invention.

1-skid base among the figure, 2-flocculation agent medicine-chest, 3-volume pump A, 4-volume pump B, 5-coagulating agent medicine-chest, the 6-water inlet pipe, 7-cyclone separator, 8-retort A, 9-serpentine pipe, 10-retort B, 11-spiral pump, 12-sedimentation magnetic adsorption zone, 13-water tank, 14-mud case, 15-mud magnetic adsorption zone, 16-sludge out pipe, 17-supernatant liquor run-off, the 18-return line, 19-sludge box, 20 ,-clear water run-off, the 21-agitator, 22-worm conveyor, 23-static mixer, 24-upflow tube.

Embodiment:

The invention will be further described below in conjunction with accompanying drawing: by shown in Figure 1, the crude oil that this device at first spues water injection well is collected after cyclone separator 7 separates, avoided the waste of the energy, the sewage of removing crude oil adds coagulating agent through static mixer 23 and fully mixes with sewage and form small flco, add iron powder used in metallurgy by giving in the sewage, through the reaction of retort A8 and the stirring action of agitator 21, iron powder is because its magnetic ununiformity and heavy characteristics, make small flco form small floc sedimentation around ferrous powder granules, make sewage abolish stability fast, increase the flco proportion after sewage breaks surely, the reaction that mixes by retort B10 and agitator 21, adding the bridging action that flocculation agent makes the floc sedimentation contain iron powder take full advantage of flocculation agent again grows up rapidly, that grows up contains the iron powder flco in sludge box 19, because of rapid subsidence under the effect of the Nd-Fe-B permanent magnet of sedimentation magnetic adsorption zone 12, mud after the sedimentation is discharged through spiral pump 11 and is entered 14 storages of mud case, mud through mud magnetic adsorption zone 15 further concentration and settlements in the bottom, supernatant liquor is back to front end, the upper reaches clear water of sludge box 19 enters water tank through clear water run-off 20, inject well head through the high pressure pump truck, realize the well-flushing water circular treatment.

This movable type well-flushing well mouth cyclic processing device comprises skid base 1, each parts of this device all are fixedly connected on skid base 1 and install transportable purpose to realize this, wherein, place the outer rounded shoulders of the cyclone separator 7 on the skid base 1 to be communicated with water inlet pipe 6, the top center of cyclone separator 7 is communicated with upflow tube 24 and is used for collecting the crude oil that cyclone separator 7 upflow tubes flow out, the crude oil of collecting is stored, operation is finished post-tensioning and is transported to the joint station recovery, the conical lower portion of cyclone separator 7 has pipeline to be communicated in the last cylinder shoulder of retort A8 by tandem static mixing tank 23, retort A8 bottom has serpentine pipe 9 to be communicated in the last cylinder shoulder of retort B10, pipeline connection is arranged at the bottom of retort B10 and sludge box 19 bottoms, the structural arrangement of pipeline and retort makes sewage enter on the top of retort A8 or retort B10, stir and certain hydraulic detention time through agitator, guarantee reaction times and the churning time of medicament and sewage;

The conical lower portion of sludge box 19 is equipped with sedimentation magnetic adsorption zone 12 outward, when current slowly rise, the floc sedimentation that contains iron powder in the magnetic attraction sewage of the sedimentation magnetic adsorption zone 12 of sludge box bottom descends fast, be adsorbed on sludge box 19 bottoms, sludge box 19 bottoms are communicated with spiral pump 11 imports, spiral pump 11 outlets have pipeline to be communicated with mud case 14 waist outer walls, mud enters the middle part of mud case, the floc sedimentation that contains iron powder descends under gravity and the attached effect of magnetic, the clear liquid come-up, select mud to enter at mud case 14 middle parts, on the one hand under the pressure of supernatant liquor, mud enters mud case 14 slowly, the fluid that enters of mud also can not stir the mud of sedimentation on the other hand, and the outside, 14 barrels of wall upper edges of mud case has supernatant liquor run-off 17, the conical lower portion of mud case 14 to be equipped with mud magnetic adsorption zone 15 outward, the outside, retort B10 bucket wall upper edge has clear water run-off 20, clear water run-off 20 to have pipeline to be communicated with water tank 13 tops.

Described retort A8 and retort B10 are the tubbiness thin-wall construction of upper shed, be equipped with agitator 21 at this tubbiness center, sludge box 19 and mud case 14 are the tubbiness thin-wall construction of bottom taper, barrel-like structure can farthest be brought into play the circumference stirring action of propeller-blade, the conical lower portion structure can flock together when descending simultaneously so that contain the floc sedimentation of iron powder, tap density increases, and is conducive to reduce the water ratio of mud.

Described supernatant liquor run-off 17 and clear water run-off 20 are barrel outside, wall upper edge by the circular water channel in " L " shape thin plate besieged city, and wherein, supernatant liquor run-off 18 bottoms have return line 18 to lead in retort A8 top.

Also be equipped with coagulating agent medicine-chest 5 and flocculation agent medicine-chest 2 on the described skid base 1, coagulating agent medicine-chest 5 has pipeline connection volume pump B4 import, volume pump B4 outlet has pipeline connection in the pipe center of static mixer 23, in the coagulating agent medicine-chest 5 coagulant solution is housed, by volume pump B4 coagulating agent is boosted and to enter in the static mixer 23, utilize the characteristic of static mixer 23 that sewage and coagulating agent are fully mixed, reaction enters retort A8, flocculation agent medicine-chest 2 has pipeline connection volume pump A3 import, volume pump A3 outlet has pipeline connection in the pipe center of serpentine pipe 9, in the flocculation agent medicine-chest 2 flocculant solution is housed, the pipe center that volume pump A3 boosts flocculation agent to enter serpentine pipe 9, make the sewage that adds coagulating agent in the pipe of serpentine pipe 9, fully be mixed into retort B11 with flocculation agent, described retort A8, which is provided with worm conveyor 22, the discharge port of worm conveyor 22 is positioned at the opening top circumference range of retort A8, the material that worm conveyor is carried can enter along the largest circumference of retort A8, and the current that take full advantage of the top speed of agitator 21 stirrings in the retort fully mix with sewage.

Described spiral pump 11, volume pump A2, volume pump B3, worm conveyor 22 and agitator 21 drive by direct-current machine, direct-current machine is driven by store battery, need not to utilize external power source, enlarge the use range of this device, avoided the potential safety hazard of bringing with automobile power-taking device and on-board engine simultaneously.

Described sedimentation magnetic adsorption zone 12 and mud magnetic adsorption zone 15 are filled with the sheet Nd-Fe-B permanent magnet in its scope, utilize the ferromagnetism of Nd-Fe-B permanent magnet to adsorb floc sedimentation rapid subsidence, the gathering that contains iron powder.

The material that described worm conveyor 22 is carried is iron powder used in metallurgy, the iron-holder of described iron powder used in metallurgy is about 65%, the granularity of described iron powder used in metallurgy is between 200～250 orders, iron-holder is that about 65% iron powder used in metallurgy can produce and satisfies the requirement that makes the floc sedimentation sedimentation that contains iron powder and with low cost, the granularity of iron powder used in metallurgy is too little, its weight and magnetic can not produce tangible effect, rate request to current is very tight, the problem that granularity is too big is, the one, the weight of iron powder itself can be broken the bridging action of flocculation agent, sedimentation is ineffective voluntarily to break through floc sedimentation, also make simultaneously iron powder add dosage and cost significantly improves, test shows that the iron powder used in metallurgy between 200～250 orders relatively is suitable as well-flushing water and handles the sedimentation additive.

This device drives with direct-current machine for portable, need not to rely on external power source, especially be fit to the field construction operation, but the sewage that the site disposal water injection well spues handles directly being recycled in the water injection well through the high pressure pump truck after qualified, saves the well-flushing water, need not the cost of tank car roping, it is fast to have processing speed, need not power supply, but a tractor serves several purposes, processing cost is low, the characteristics of save energy.

Claims

1. A mobile well-washing wellhead circulation treatment device, comprising a skid-mounted base (1), characterized in that: each component of the device is fixedly connected to the skid-mounted base (1), wherein, placed on the skid-mounted base ( 1) The outer circular shoulder of the cyclone separator (7) is connected to the water inlet pipe (6), the top center of the cyclone separator (7) is connected to the overflow pipe (24), and the cyclone separator (7) The conical bottom of the pipe is connected to the upper cylindrical shoulder of the reaction tank A (8) through the series static mixer (23), and the bottom of the reaction tank A (8) has an "S" shaped pipe (9) connected to the reaction tank B The upper cylindrical shoulder of (10), the bottom of the reaction tank B (10) is connected with the bottom of the settling box (19) by a pipeline, and the conical bottom of the settling box (19) is provided with a settling magnetic adsorption area (12) outside. The bottom of the box (19) is connected to the inlet of the screw pump (11), and the outlet of the screw pump (11) has a pipeline connected to the outer wall of the waist of the sludge tank (14), and the upper edge of the barrel wall of the sludge tank (14) has supernatant overflowing Pool (17), sludge magnetic adsorption area (15) is placed outside the conical bottom of the sludge tank (14), and there is a clear water overflow pool (20) on the outside of the wall of the reaction tank B (10), where the clear water overflows Pool (20) has pipeline to communicate with water tank (13) top.

2. mobile well flushing water well head circulating treatment device according to claim 1, is characterized in that: described reaction tank A (8) and reaction tank B (10) are the barrel-shaped thin-walled structure of upper opening, An agitator (21) is arranged at the barrel-shaped center, and both the settling tank (19) and the sludge tank (14) are barrel-shaped thin-walled structures with conical bottoms.

3. The mobile well flushing water well head circulating treatment device according to claim 2, characterized in that: the supernatant overflow pool (17) and the clear water overflow pool (20) are both on the upper edge of the barrel wall The outer side is a circular water channel surrounded by "L"-shaped thin plates, wherein the bottom of the supernatant overflow pool (18) has a return pipe (18) connected to the upper part of the reaction tank A (8).

4. The mobile well-flushing water wellhead circulation treatment device according to claim 3, characterized in that: the skid-mounted base (1) is also equipped with a coagulant medicine box (5) and a flocculant medicine box ( 2), the coagulant medicine box (5) has a pipeline connected to the inlet of the metering pump B (4), and the outlet of the metering pump B (4) has a pipeline connected to the pipe center of the static mixer (23), and the flocculant medicine box ( 2) There is a pipeline connected to the inlet of the metering pump A (3), and the outlet of the metering pump A (3) is connected to the center of the "S"-shaped pipe (9). A screw conveyor (22) is provided, and the outlet of the screw conveyor (22) is located within the circumference range above the opening of the reaction tank A (8).

5. The mobile well flushing wellhead circulating treatment device according to claim 4, characterized in that: the screw pump (11), the metering pump A (2), the metering pump B (3), the screw conveyor ( 22) and agitator (21) are all driven by DC motor.

6. The mobile well flushing wellhead circulating treatment device according to claim 1, characterized in that: the magnetic sedimentation zone (12) and the sludge magnetic adsorption zone (15) are filled with flaky NdFeB permanent magnets.

7. The mobile well-flushing wellhead circulating treatment device according to claim 5, characterized in that: the material conveyed by the screw conveyor (22) is iron powder for powder metallurgy, and the iron powder for powder metallurgy is The iron content is about 65%, and the particle size of the iron powder for powder metallurgy is between 200 and 250 mesh.