CN110821468A - Carbon dioxide displacement of reservoir oil well output well head processing apparatus - Google Patents
Carbon dioxide displacement of reservoir oil well output well head processing apparatus Download PDFInfo
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- CN110821468A CN110821468A CN201810919338.5A CN201810919338A CN110821468A CN 110821468 A CN110821468 A CN 110821468A CN 201810919338 A CN201810919338 A CN 201810919338A CN 110821468 A CN110821468 A CN 110821468A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 141
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 71
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 70
- 239000003129 oil well Substances 0.000 title claims description 31
- 238000012545 processing Methods 0.000 title claims description 7
- 238000006073 displacement reaction Methods 0.000 title claims description 5
- 239000007788 liquid Substances 0.000 claims abstract description 129
- 238000005192 partition Methods 0.000 claims abstract description 58
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 abstract description 40
- 239000007787 solid Substances 0.000 abstract description 8
- 230000008676 import Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 38
- 239000000047 product Substances 0.000 description 31
- 239000003814 drug Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
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- 235000019614 sour taste Nutrition 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
- 238000010669 acid-base reaction Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 239000012265 solid product Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a wellhead treatment device for a product of a carbon dioxide flooding well, which comprises: jar body, first baffle, second baffle, import pipeline, receipts liquid pipe, blow off pipe, dosing pipe, first hole and first top cap. The first partition plate and the second partition plate are arranged in the tank body; the inlet pipeline, the liquid collecting pipe and the sewage draining pipe are arranged at the front end of the tank body; the dosing pipe and the first hole are arranged on the upper surface of the tank body; the first top cover is arranged on the first hole. The first partition board and the front end of the tank body form an inlet dissolving bin; the first partition plate and the second partition plate form a transition mixing bin in the tank body; the second clapboard and the rear end of the tank body form a gas recovery cabin. The liquid, gas and solid of the product are separated and treated respectively through an inlet dissolving bin, a transition mixing bin, a gas recovery bin and a dosing pipe. The resource utilization rate is improved, the environment is protected, the harm to workers is reduced, and the damage to gathering and transportation equipment is reduced.
Description
Technical Field
The invention relates to the field of oil exploitation, in particular to a wellhead treatment device for an effluent of a carbon dioxide flooding well.
Background
With the continuous exploitation of petroleum, increasing attention is paid to how to increase the oil well yield and increase the recovery ratio. Carbon dioxide flooding is one of the important production increasing measures for increasing the oil well yield and improving the recovery ratio in oil recovery. The carbon dioxide flooding oil is generally divided into four stages of injection, well closing, pressure release and oil production, wherein the pressure release stage is a transition stage for releasing high-pressure gas in the well so as to meet normal production. In order to improve the effect of measures, the pressure in the well needs to be slowly and controllably released, and the well can not be opened to enter the oil production stage until the normal production condition of the oil well is met. Therefore, the design of the wellhead treatment device for the carbon dioxide flooding well produced product with a good pressure relief process becomes a problem which is concerned by people in the field of oil exploitation.
At present, three treatment processes are commonly used in the pressure relief stage: the first is an emptying discharge method, the pressure release pipeline is connected from a well mouth to enter a ground oil pool for emptying, and the output of the well mouth is directly discharged to the ground and air; secondly, an open tank method is adopted, wherein an open tank is arranged on a well site, a pressure release pipeline is connected from a well mouth and enters the open tank, gas is volatilized into air, and liquid products such as crude oil and the like are pulled away by a vehicle and discharged; and thirdly, a closed conveying method is adopted, the materials enter a ground gathering and transportation pipe network from a wellhead for closed conveying, and the materials are not discharged to the air or outside.
The related art has at least the following problems:
the air is discharged or enters the open tank to pollute the environment, harmful gas harms the safety of personnel and wastes resources. During closed conveying, carbon dioxide generates carbonic acid when meeting water to corrode a gathering and conveying pipe network, so that a gathering and conveying system is disordered.
Disclosure of Invention
The embodiment of the invention provides a wellhead treatment device for a product of a carbon dioxide flooding well, which aims to solve the problems of resource waste, environmental pollution and human body harm in the related technology. The technical scheme is as follows:
a carbon dioxide flooding well output wellhead treatment device comprises: jar body 1, first baffle 2, second baffle 3, inlet pipeline 4, receipts liquid pipe 5, blow off pipe 6, dosing pipe 7, first hole 8 and first top cap 9.
The first partition plate 2 and the second partition plate 3 are arranged inside the tank body 1; the inlet pipeline 4, the liquid collecting pipe 5 and the sewage draining pipe 6 are arranged at the front end of the tank body 1; the dosing pipe 7 and the first hole 8 are arranged on the upper surface of the tank body 1; the first top cover 9 is arranged on the first hole 8;
wherein, the lower end of the first clapboard 2 is provided with a preset number of liquid flow channels; the upper end of the second clapboard 3 is provided with a preset number of vent holes. The first clapboard 2 and the front end of the tank body 1 form an inlet dissolving bin; the first partition plate 2 and the second partition plate 3 form a transition mixing bin in the tank body 1; the second partition plate 3 and the rear end of the tank body 1 form a gas recovery cabin.
Optionally, the first top cover 9 is an oil blocking cap.
Optionally, the carbon dioxide flooding well product wellhead treatment device further comprises a screen 10.
One end of the screen pipe 10 is provided with a screen pipe clamp, and the screen pipe 10 is connected with one end of the inlet pipeline 4 through the screen pipe clamp.
Optionally, the carbon dioxide flooding well product wellhead treatment device further comprises a heating pipe 11;
the pipe orifices at two ends of the heating pipe 11 are provided with heating pipe quick connectors; the heating pipe 11 passes through the first partition plate 2 and the second partition plate 3 and is connected with the front end of the tank body 1.
Optionally, the carbon dioxide flooding well product wellhead treatment device further comprises a liquid level meter 12;
the liquid level meter 12 is arranged on the outer wall of the rear end of the tank body 1.
Optionally, the carbon dioxide flooding well produced product wellhead treatment device further comprises a liquid level meter guard plate 13;
the liquid level meter guard plate 13 is arranged on the outer wall of the rear end of the tank body 1.
Optionally, the carbon dioxide flooding well produced product wellhead processing device further comprises a first elevator 14;
first people's ladder 14 one end with 8 one ends in first hole are connected, first people's ladder 14 other end is connected with jar body 1 bottom.
Optionally, the carbon dioxide flooding well produced product wellhead treatment device further comprises a second hole 15, a second top cover 16 and a second ladder 17;
the second hole 15 set up in jar body 1 top, 15 one end in second hole with second top cap 16 is connected, the 15 other end in second hole with second people's ladder 17 one end is connected, the second people's ladder 17 other end with jar body 1 bottom is connected.
Optionally, the carbon dioxide flooding well produced product wellhead treatment device further comprises a third hole 18, a third top cover 19 and a third ladder 20;
Optionally, the carbon dioxide flooding well produced product wellhead treatment device further comprises a base 21;
the base 21 with jar body 1 bottom links to each other, the base 21 lower extreme is provided with the davit of predetermineeing quantity.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the product is led into the tank body through a liquid inlet pipeline, and is subjected to comprehensive actions of an inlet dissolving bin between the first partition plate and the tank body, a transition mixing bin between the first partition plate and the second partition plate, a gas recovery bin between the second partition plate and the tank body, and liquid medicine led into the medicine feeding pipe, so that the carbon dioxide drives the oil well product to realize liquid-gas-solid separation, and the gas is discharged to special recovery equipment through an oil baffle cap; the liquid enters a gathering pipe network through a liquid collecting pipe; the solid substance is discharged through a sewage discharge pipe and is pulled to a designated position for treatment. The resource utilization rate is improved, the environment is protected, the harm to workers is reduced, and the damage to gathering and transportation equipment is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a wellhead treatment device for an effluent from a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first separator according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second separator according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a wellhead treatment device for an effluent from a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a wellhead treatment device for the produced product of a carbon dioxide flooding well according to an embodiment of the invention;
FIG. 6 is a schematic view of a screen construction provided by an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a wellhead treatment device for the produced product of a carbon dioxide flooding well according to an embodiment of the invention;
FIG. 8 is a schematic structural diagram of a wellhead treatment device for the product of a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a wellhead treatment device for the product of a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a wellhead treatment device for the product of a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a wellhead treatment device for the product of a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a wellhead treatment device for the product of a carbon dioxide flooding well according to an embodiment of the present invention;
FIG. 13 is a schematic structural diagram of an alternative apparatus for wellhead treatment of carbon dioxide drive well effluent according to an embodiment of the present invention.
Wherein reference numerals in the drawings are explained as follows:
1 jar body, 2 first baffle, 3 second baffle, 4 inlet pipeline, 5 receipts liquid pipe, 6 blow off pipes, 7 dosing pipe, 8 first holes, 9 first top covers, 10 screen pipes, 11 heating pipes, 12 level gauge, 13 level gauge backplate, 14 first people's ladder, 15 second holes, 16 second top covers, 17 second people's ladder, 18 third holes, 19 third top covers, 20 third people's ladder, 21 bases.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a wellhead treatment device for carbon dioxide flooding well output, which is shown in figure 1 and comprises a tank body 1, a first partition plate 2, a second partition plate 3, an inlet pipeline 4, a liquid collecting pipe 5, a drain pipe 6, a dosing pipe 7, a first hole 8 and a first top cover 9.
The first partition plate 2 and the second partition plate 3 are arranged inside the tank body 1; the inlet pipeline 4, the liquid collecting pipe 5 and the sewage draining pipe 6 are arranged at the front end of the tank body 1; the dosing pipe 7 and the first hole 8 are arranged on the upper surface of the tank body 1; the first top cover 9 is arranged on the first hole 8;
wherein, the lower end of the first clapboard 2 is provided with a preset number of liquid flow channels; the upper end of the second clapboard 3 is provided with a preset number of vent holes. The first clapboard 2 and the front end of the tank body 1 form an inlet dissolving bin; the first clapboard 2 and the second clapboard 3 form a transition mixing bin in the tank body 1; the second partition plate 3 and the rear end of the tank body 1 form a gas recovery cabin.
Optionally, the first partition plate 2 is disposed inside the tank 1, referring to fig. 2, the first partition plate 2 is vertically welded to the bottom of the tank 1, and the first partition plate 2 is provided with a predetermined number of liquid flow channels from the lower portion to the upper portion, wherein the predetermined number is 4 or 6, which is not limited in the embodiment of the present invention. The distance between the top surface of the first clapboard 2 and the top of the tank body 1 is a preset value. The first clapboard 2 and the front end of the tank body 1 form an inlet dissolving bin.
Referring to fig. 3, the second partition plate 3 is disposed inside the tank body 1, the second partition plate 3 is vertically welded to the top of the tank body 1, and a predetermined number of vent holes are disposed at the upper portion of the second partition plate 3, where the predetermined number is 4 or 6, which is not limited in the embodiment of the present invention. The distance between the bottom surface of the second clapboard 3 and the bottom of the tank body 1 is a preset value. The first clapboard 2, the second clapboard 3 and the tank body 1 form a transition mixing bin.
The inlet pipeline 4 penetrates through the front end of the tank body 1 and is hermetically welded with the tank body 1, and one end of the inlet pipeline 4, which is positioned outside the tank body 1, is connected with the inlet valve. The liquid receiving pipe 5 penetrates through the bottom of the front end of the tank body 1 and is hermetically welded with the tank body 1, the length of the liquid receiving pipe 5 entering the tank body 1 is a preset value, and one end, located outside the tank body 1, of the liquid receiving pipe 5 is connected with a liquid receiving valve. One end of the blow-off pipe 6 is welded and sealed with the bottom of the front end of the tank body 1, the blow-off pipe 6 is communicated with the inside of the tank body 1, and the other end of the blow-off pipe 6 is connected with a blow-off valve. Add pencil 7 and pass 1 front end top of jar body and jar body 1 seal weld, add pencil 7 and get into the distance of 1 one end of jar body apart from the tank bottoms and be the default, add pencil 7 and be located 1 outside one end of jar body and be connected with the medicine valve. First hole 8 is short body, 8 one ends in first hole and jar body 1 rear end top seal weld, and first hole 8 communicates with each other with jar body 1, and the 8 other ends in first hole can be dismantled with first top cap 9 and be connected. The second partition plate 3 and the rear end of the tank body 1 form a gas recovery cabin.
Carbon dioxide drives oil well output and gets into jar body 1 inside import dissolving bin through inlet line 4, add through adding pencil 7 and handle the liquid medicine and react with carbon dioxide drives oil well output, solid-state material drops to jar body 1 bottom, liquid material gets into transition mixing bin through the liquid flow channel of first baffle 2, gaseous material gets into the gas recovery cabin through the air vent of second baffle 3, discharge gas through first hole 8, retrieve liquid through receiving liquid pipe 5, discharge the waste through blow off pipe 6 jar body 1.
Harmful gas in the product of the carbon dioxide flooding well is prevented from volatilizing into the air through the sealed tank body, the environment is protected, and harm to workers is reduced. The liquid medicine is added into the tank body through the medicine adding pipe and reacts with the product of the carbon dioxide displacement well, so that solid, liquid and gas are separated, harmless gas is discharged out of the tank body through the first hole, liquid resources are recycled and conveyed to the gathering and transportation pipe network through the liquid collecting pipe, the waste discharging tank body is pulled and conveyed to a designated position through the drain pipe for treatment, resources are saved, and damage to gathering and transportation equipment is reduced.
Referring to fig. 4, in an alternative embodiment, the first head cover 9 is an oil deflector cap.
The oil blocking cap is detachably connected with the first hole 8 in a sealing mode.
Referring to fig. 5, in an alternative embodiment, the carbon dioxide flooding well production wellhead treatment device further comprises a screen 10.
One end of the screen 10 is provided with a screen clamp, by means of which the screen 10 is connected to one end of the inlet line 4.
Referring to fig. 6, the screen pipe 10 is a porous tubular structure arranged regularly and is connected in parallel by multiple pipes; wherein, the size of the pore canal is sequentially enlarged from the inlet along the length direction; one end of the sieve tube 10 is provided with a sieve tube clamp, and the sieve tube 10 is detachably connected with one end of the inlet pipeline 4 through the sieve tube clamp. The sieve tube 10 is flatly laid at the bottom of the inlet dissolving bin in the tank body 1.
Referring to fig. 7, in an alternative embodiment, the carbon dioxide flooding well production wellhead treatment device further comprises heating pipes 11.
The pipe orifices at two ends of the heating pipe 11 are provided with heating pipe quick connectors; the heating pipe 11 passes through the first clapboard 2 and the second clapboard 3 to be connected with the front end of the tank body 1.
Optionally, the heating pipe 11 is a U-shaped pipe; the heating pipe 11 passes through the first partition plate 2 and the second partition plate 3 and is supported by the first partition plate 2 and the second partition plate 3, two ports of the heating pipe pass through the front end of the tank body 1 and are hermetically welded with the tank body 1, and two ports of the heating pipe 11 are provided with heating pipe quick connectors. And the heating pipe 11 is arranged in the tank body 1 with a low inlet and a high outlet.
Referring to FIG. 8, in an alternative embodiment, the carbon dioxide flooding well effluent wellhead treatment device further comprises a liquid level gauge 12.
The liquid level meter 12 is arranged on the outer wall of the rear end of the tank body 1.
Optionally, the liquid level meter 12 is arranged on the outer side of the rear end of the tank body 1, communicated with the tank body 1 through a through hole and welded and sealed, and the liquid level meter 12 is vertically connected with the bottom of the tank body 1.
Referring to fig. 9, in an alternative embodiment, the carbon dioxide flooding well effluent wellhead treatment device further comprises a liquid level gauge guard 13;
the liquid level gauge guard plate 13 is arranged on the outer wall of the rear end of the tank body 1.
Optionally, the level gauge backplate 13 is the cuboid structure, and level gauge backplate 13 sets up around level gauge 12, and welded fastening is at jar 1 outer wall.
Referring to fig. 10, in an alternative embodiment, the carbon dioxide flooding well production wellhead treatment device further comprises a first personnel ladder 14.
First people's ladder 14 sets up in first hole 8 lower part, and first people's ladder 14 both ends respectively with first hole 8 and jar body 1 bottom welding to keep perpendicular with jar body 1 bottom.
Referring to fig. 11, in an alternative embodiment, the carbon dioxide flooding well production wellhead treatment device further comprises a second bore 15, a second header 16, and a second man-lift 17.
The second hole 15 sets up in jar body 1 top, and second hole 15 one end is connected with second top cap 16, and the second hole 15 other end is connected with second people's ladder 17 one end, and the second people's ladder 17 other end with jar body 1 bottom be connected.
Optionally, the second hole 15 is formed in the top of the tank body 1 between the first partition plate 2 and the second partition plate 3, the second hole 15 is detachably and hermetically connected with the first top cover 16, the second step 17 is formed in the lower portion of the second hole 15, two ends of the second step 17 are respectively welded to the second hole 15 and the bottom of the tank body 1, and the second step 17 is perpendicular to the bottom of the tank body 1.
Referring to fig. 12, in an alternative embodiment, the carbon dioxide flooding well production wellhead treatment device further comprises a third bore 18, a third head cover 19, and a third personnel ladder 20.
The third hole 18 sets up in jar body 1 top, and 18 one end of third hole are connected with third top cap 19, and the third hole 18 other end is connected with third people's ladder 20 one end, and the third people's ladder 20 other end with jar body 1 bottom be connected.
Optionally, the third hole 18 is disposed at the top of the inlet dissolving bin at the front end of the tank body 1, the third hole 18 is adjacent to the dosing pipe 7, the third hole 18 is detachably and hermetically connected with the second top cover 19, the third ladder 20 is disposed at the lower portion of the third hole 18, two ends of the third ladder 20 are respectively welded to the third hole 18 and the bottom of the tank body 1, and the third ladder 20 is perpendicular to the bottom of the tank body 1.
Referring to FIG. 13 in an alternative embodiment, the carbon dioxide flooding well production wellhead treatment device further comprises a base 21.
The base 21 is welded with the bottom of the tank body 1, and the bottom of the outer side of the base 21 is symmetrically welded with a preset number of hanging legs. The preset number is 4 or 6, which is not limited in the embodiment of the present invention.
In an alternative embodiment, the first partition plate 2 and the second partition plate 3 are welded with the tank body 1 in the tank body 1, the top surface of the first partition plate 2 is 300mm away from the top of the tank body 1, and the first partition plate is provided with 3-5 liquid flow channels with the width of 90-120 mm and the height of 200-300 mm from the lower part upwards; the bottom of the second clapboard 3 is 300mm away from the bottom of the tank body 1, and 3-9 vent holes with the diameter of 50mm are uniformly arranged on the second clapboard 3 at the position 150mm away from the top of the tank body 1 of the second clapboard 3 and are used as airflow channels.
The inlet pipeline 4 is a U-shaped steel pipe with the diameter of 73mm, the U-shaped inlet pipeline 4 penetrates through the tank wall at the front end of the tank body 1 and is hung on the middle upper part of the tank body, the inlet pipeline 4 is welded and sealed with the tank body 1, the part of the inlet pipeline 4 entering the tank body 1 is 300mm away from the bottom of the tank body, one end of the inlet pipeline 4, which is positioned inside the tank body 1, is connected with the sieve pipe 10 through a sieve pipe clamp, and the outer port of the inlet pipeline 4, which is positioned outside. The sieve tube 10 is a porous tubular structure, each sieve tube 10 is 2 meters long, 6-18 round holes are uniformly and alternately arranged on the sieve tube 10, and the diameters of the round holes are 2-15 mm. The liquid collecting pipe 5 is a seamless steel pipe with the diameter of 80mm, the distance between the liquid collecting pipe 5 and the bottom of the tank is 300mm, the liquid collecting pipe 5 enters the inlet dissolving bin for 300mm and 500mm, the liquid collecting pipe 5 is hermetically welded with the tank body 1, a filter screen structure is arranged at the port of the liquid collecting pipe 5, which is positioned in the tank body 1, and the other end of the liquid collecting pipe 5 is connected with a gathering and transportation network pipe through a liquid collecting valve. One end of the blow-off pipe 6 is hermetically welded with the bottom of the front end of the tank body 1, the blow-off pipe 6 is communicated with the tank body 1, and the other end of the blow-off pipe 6 is connected with a blow-off valve. The dosing pipe 7 is a stainless steel pipe with the diameter of 32mm, the dosing pipe 7 is perpendicular to the bottom of the tank body 1, and the upper end of the dosing pipe 7 penetrates through the top of the tank body 1 and is connected with a dosing device through a dosing valve and is welded and sealed with the tank body 1.
The first hole 8 is arranged at the rear end of the top of the tank body 1, the diameter of the first hole 8 is 600-800 mm, and the upper part of the first hole 8 is in flange connection with the first top cover 9; first people's ladder 14 is formed by the angle steel of both sides and the equidistant welding preparation of a plurality of diameter 16mm reinforcing bars in middle part, and first people's ladder 14 sets up in 8 lower parts in first hole, with tank bottoms welded fastening. The heating pipe 11 is a seamless steel pipe, the heating pipe 11 passes through the first partition plate 2 and the second partition plate 3 and is supported by the first partition plate 2 and the second partition plate 3, an inlet and an outlet of the heating pipe 11 pass through the tank wall at the front end of the tank body 1 and are welded in a sealing mode, and two ports of the heating pipe 11 are connected with heat supply equipment through quick connectors.
The liquid level meter 12 is arranged on the outer side of the rear end of the tank body 1, is communicated with the tank body 1 through a through hole and is welded with the tank body in a sealing way. The liquid level meter guard plate 13 is arranged around the liquid level meter 12 and welded with the tank body 1. The second hole 15 sets up in the top of transition mixing storehouse, and 15 diameters in second hole are 600 and give good luck 800mm, and 15 upper portions in second hole are flange structure and 16 flange joint of second top cap, and second terraced 17 is formed by the angle steel of both sides and the equidistant welding preparation of a plurality of diameter 16mm reinforcing bars in middle part, and second terraced 17 sets up in 15 lower parts in second hole, with tank bottoms welded fastening. The third hole 18 is arranged at the top of the inlet dissolving bin at the front end of the tank body 1, the diameter of the third hole 18 is 800mm, the upper part of the third hole 18 is in flange connection with a third top cover 19 through a flange structure, the third ladder 20 is formed by welding angle steel at two sides and a plurality of steel bars with the diameter of 16mm in the middle at equal intervals, and the third ladder 20 is arranged at the lower part of the third hole 18 and is welded and fixed with the bottom of the tank. The base 21 is welded with the bottom of the tank body 1, and 4 hanging legs are arranged on the base 21.
In the specific operation, the first step: and (6) hoisting. Transporting the carbon dioxide flooding well product wellhead treatment device to a well site, and placing the device at a distance CO2The well mouth of the oil well is driven to be 15 meters away, and the wind inlet direction is under the wind in local seasons, and is connected with the ground wire;
step two: and (6) checking. Checking and confirming that the inlet valve, the dosing valve, the liquid collecting valve and the sewage discharging valve are flexible and easy to use and close; checking to confirm that the first hole 8 is sealed with the first cap 9; checking and confirming that the liquid level meter 12 is flexible and accurate; the inspection confirmed that the can body 1 and the respective portions were normal.
Step three: connecting the pipelines. A 1-5 mm oil nozzle is arranged in the wellhead heat-insulating sleeve; connecting an inlet pipeline 4, opening an inlet valve, filling clear water into the tank body 1, and displaying that the liquid level reaches 400-600 mm and the submerged sieve tube 10 is not less than 300mm by the liquid level meter 12. Materials such as the pharmaceutical industry and the like are prepared and are connected with a dosing pipe 7; the medicine feeding pump and the medicine feeding equipment are connected through the medicine feeding valve.
Step four: and (5) opening the well and releasing pressure. Opening the well according to the well opening procedure and releasing pressure, wherein the carbon dioxide drives the oil well output to enter an inlet dissolving bin through an oil nozzle, a well mouth heat insulation sleeve, an inlet pipeline 4, an inlet valve and a sieve tube 10, and the gas output generates a large amount of micro bubbles in water after passing through the sieve tube 10 and is fully mixed with the water to form hydrate and mixed gas; the gas enters the transition mixing bin along the first partition plate 2, enters the gas recovery bin through the gas flow channel of the second partition plate 3, and is discharged (or recovered by the gas collector) through the oil blocking cap along the first hole 8. The liquid enters the transition mixing area along the communicating hole at the lower part of the first clapboard 2 and enters the gas recovery bin through the lower part of the second clapboard 3, under the action of buoyancy, the crude oil floats upwards, and the solid matter sinks to the bottom of the tank. When the product contains acidic corrosive substances, the acidic corrosive substances are dissolved in clear water to form acidic solution, when the pH value is lower than 6, the liquid medicine is prepared according to the formula, the medicine adding valve is opened, the medicine adding pump is started, and the liquid medicine is added into the tank body 1, so that the pH value of the liquid in the tank body 1 is kept between 7 and 8. When the liquid level exceeds the volume 2/3, the liquid collecting valve is opened to start the liquid collecting pump to collect the liquid into the gathering flow path or the pulling process. When the crude oil is solidified and can not normally receive the liquid, the crude oil is connected with heating equipment, is connected with a heating pipe 11 through a quick connector of the heating pipe, heats the liquid in the tank body 1, and starts a liquid receiving process to recover the liquid after the liquid is dissolved. The solid waste and solid products of acid-base reaction generated in the process are deposited at the bottom of the tank body 1 by the action of gravity.
Step five: and (5) ending and cleaning the tank. When the pressure release stage is finished, the inlet valve is closed, and the inlet pipeline 4 is disassembled. And opening a liquid collecting valve, starting a liquid collecting pump, and collecting the liquid into a gathering flow or a pulling treatment through a liquid collecting pipe 5. The oil blocking cap at the upper part of the first hole 8 is removed, the bolt of the second top cover 16 at the upper part of the second hole 15 is removed, the top cover is taken off, the bolt of the third top cover 19 at the upper part of the third hole 18 is removed, the top cover is taken off, air is input into the inner space of the tank body 1, and after no toxic and harmful gas is detected, the solid waste at the bottom of the tank is checked and removed.
Step six: and (5) a recovery device. After the carbon dioxide flooding well produced product wellhead treatment device is used, all connecting accessories are disassembled, the nozzles, the coil pipes and the screw threads of all connecting pieces are checked, and after the complete confirmation, the oil is coated and protected and then is recovered for standby.
For example, in a carbon dioxide flooding oil well, the pressure of an oil pipe at a wellhead is 18MPa, the pressure of a casing pipe is 20MPa, the well depth is 2998m before pressure release, a phi 38 tubular pump is put in, and the pump hanging depth is 2008 m. And (4) carrying out pressure relief construction on the carbon dioxide flooding oil well by utilizing a wellhead treatment device for the product of the carbon dioxide flooding oil well. The method comprises the following steps:
the method comprises the following steps: and (6) hoisting. Firstly, a wellhead treatment device for the product of the carbon dioxide flooding well is conveyed to a well site, and a crane is placed at a position 25 meters away from the wellhead and at the position of a wind inlet in local seasons. A ground wire is connected.
Step two: and checking the connecting pipeline. Checking and confirming that the inlet valve, the dosing valve, the liquid collecting valve and the sewage discharging valve are flexible and easy to use and close; checking to confirm that the first hole 8 is sealed with the first cap 9; checking and confirming that the liquid level meter 12 is flexible and accurate; the inspection confirmed that the can body 1 and the respective portions were normal. Clean water is filled into the tank body 1, the liquid level meter 12 displays the liquid level of 600mm, and the sieve tube 10 is submerged by about 450 mm.
Step three: and (5) opening the well and releasing pressure. A3 mm oil nozzle is installed from an oil pipe heat-insulating sleeve, and a connecting pipeline enters an inlet dissolving bin of a tank body 1 through an inlet valve, an inlet pipeline 4 and a sieve pipe 10 of a product wellhead treatment device of a carbon dioxide flooding well. After the pressure is released for 4 hours, the liquid level meter 12 shows that the liquid level rises by 300mm, the converted liquid amount is about 5.5 tons, the PH value of the sampled liquid is between 5 and 6, the gas is discharged from an oil blocking cap at the top of the gas recovery bin, and corrosive sour exists around the gas recovery bin.
Step four: and (6) collecting the liquid. Processing liquid medicine is prepared in the medicine adding device according to the formula, a medicine adding valve is opened, a medicine adding pump is started, the processing liquid medicine is added into the tank body 1, after one hour, the PH value is detected to be between 7 and 8, and gas exhausted from an oil blocking cap at the top of the gas recovery bin has no obvious corrosive sour taste. After 24 hours of pressure release, the liquid level meter 12 displays that the liquid level rises by 1.8 meters and exceeds 2/3 volumes of the tank body 1, and the normal production of the gathering and transportation system is not influenced by substances contained in the liquid in the tank body 1 after sampling and testing. And a liquid receiving pipeline and a liquid receiving pump are connected immediately, and the liquid receiving pipeline and the liquid receiving pump recover 18 parts of output from the gathering and transportation system through a liquid receiving valve and a liquid receiving pipe 5 arranged on the tank body 1 through the production flow of the oil well, and the gathering and transportation system is observed for 6 hours to produce normally. And (4) continuing to adopt the method and the program for pressure relief, relieving the pressure of the oil pipe for 13 days, and relieving the pressure of the sleeve for 11 days, wherein the pressure relief pipeline is not blocked. And stopping pressure relief until the pressure of the oil pipe is reduced to 0.8MPa and the pressure of the casing pipe is reduced to 0.9MPa, and ending the pressure relief stage of the well. After the inlet valve is closed, the pressure relief pipeline and the oil nozzle of the heat insulation sleeve are disassembled, and the well is opened for normal production.
Step five: and (5) ending and cleaning the tank. Unload the oil cap that keeps off on 8 upper portions in first hole, unload 15 upper portion top cap bolts in second hole, take off second top cap 16, unload 18 upper portion top cap bolts in third hole, take off third top cap 19, to jar 1 inner space input air, after detecting no poisonous and harmful gas, the inspection tank bottoms condition, jar 1 lower part leaves over thick form liquid 200mm, and about 50mm solid waste has been deposited to the bottom. And then, a recovery facility is connected to the outer side of the sewage valve, and the sewage valve is opened to transport and pull away the substances through a sewage outlet and process the substances by a professional department.
Step six: and (5) a recovery device. Checking that the accessories of each part are intact, and after the screw threads and bolts of the connecting parts are complete and maintained, pulling back to the mine field for storage.
For another example, in a carbon dioxide oil-driving well, the pressure of a wellhead oil pipe is 11MPa, the pressure of a casing pipe is 15MPa, the well depth is 2668m before pressure release, a phi 44 flexible metal pump is put in, and the pump hanging depth is 1880 m. And (4) carrying out pressure relief construction on the carbon dioxide flooding oil well by using a wellhead treatment device for the product of the carbon dioxide flooding oil well. The use steps are as follows:
the method comprises the following steps: and (6) hoisting. Firstly, a wellhead treatment device of the product of the carbon dioxide flooding well is transported to a well site by a truck, and the device is placed at a wind inlet position 18 meters away from the well head in local seasons by a crane. A ground wire is connected.
Step two: and checking the connecting pipeline. Then, assembly and inspection are performed. The inlet valve is flexible and easy to use and close; the medicine adding valve is checked to be flexible and easy to use and close; the liquid receiving valve is checked to be flexible and easy to use and close; the inspection sewage valve is flexible and easy to use and close; checking the sealing of the first hole 8 with the first cap 9; the liquid level meter 12 is flexibly and accurately checked; checking the tank body 1 and all parts to be normal; clean water is added into the tank body 1, the liquid level meter 12 displays the liquid level of 650mm, and the sieve tube 10 is submerged by about 500 mm.
Step three: and (5) opening the well and releasing pressure. A3 mm oil nozzle is installed from an oil pipe heat-insulating sleeve, and a connecting pipeline enters an inlet dissolving bin of a tank body 1 through an inlet valve, an inlet pipeline 4 and a sieve pipe 10 of a product wellhead treatment device of a carbon dioxide flooding well. After the pressure was released for 10 hours, the level gauge 12 showed that the liquid level had risen by 400mm, the converted liquid amount was about 6.5 tons, the pH of the sampled liquid was 5 or less, and the gas was discharged from the oil cap at the top of the gas recovery silo, and corrosive sour taste was present around the gas.
Step four: and (6) collecting the liquid. The method comprises the steps of preparing treatment liquid medicine according to a formula in a medicine adding device, opening a medicine adding valve, starting a medicine adding pump, adding the treatment liquid medicine into a tank body 1, detecting the pH value between 6 and 7 after one hour, and detecting the pH value between 7 and 8 after two hours, wherein gas discharged from an oil blocking cap at the top of a gas recovery bin has no obvious corrosive sour taste. After the pressure is released for 48 hours, the liquid level meter 12 displays that the liquid level rises by 1.6 meters and exceeds 2/3 volumes of the tank body 1, and the normal production of the gathering and transportation system is not influenced by substances contained in the liquid in the tank body 1 after sampling and testing. And a liquid receiving pipeline and a liquid receiving pump are connected immediately, and the liquid receiving pipeline and the liquid receiving pump recover 15 parts of output from the gathering and transportation system through the production flow of the oil well through a liquid receiving valve and a liquid receiving pipe 5 arranged on the tank body 1, and the gathering and transportation system is normally produced after observation for 4 hours. And (4) continuing to adopt the method and the program for pressure relief, relieving the pressure of the oil pipe for 15 days, and relieving the pressure of the sleeve for 8 days, wherein the pressure relief pipeline is not blocked. And stopping pressure relief until the pressure of the oil pipe is reduced to 0.5MPa and the pressure of the casing pipe is reduced to 1.0MPa, and ending the pressure relief stage of the well. After the inlet valve is closed, the pressure relief pipeline and the oil nozzle of the heat insulation sleeve are disassembled, and the well is opened for normal production.
Step five: and (5) ending and cleaning the tank. Unload the oil cap that keeps off on 8 upper portions in first hole, unload 15 upper portion top cap bolts in second hole, take off second top cap 16, unload 18 upper portion top cap bolts in third hole, take off third top cap 19, to jar 1 inner space input air, after detecting no poisonous and harmful gas, the inspection tank bottoms condition, jar 1 lower part leaves over thick form liquid 100mm, and about 20mm solid waste has been deposited to the bottom. And then, a recovery facility is connected to the outer side of the sewage valve, and the sewage valve is opened to transport and pull away the substances through a sewage outlet and process the substances by a professional department.
Step six: and (5) a recovery device. Checking that the accessories of each part are intact, and after the screw threads and bolts of the connecting parts are complete and maintained, pulling back to the mine field for storage.
The working principle of the wellhead treatment device for the carbon dioxide flooding well output provided by the embodiment of the invention is as follows:
carbon dioxide drives oil well output and gets into jar internal portion's import through inlet line 4 and screen pipe 10 rather than being connected and dissolve the storehouse, add through adding pencil 7 and handle the liquid medicine and react with carbon dioxide drives oil well output, solid-state material drops to jar body 1 bottom, liquid material gets into transition mixing storehouse through the flow channel of first baffle 2, gaseous state material gets into the gas recovery cabin through the air vent of second baffle 3, harmless gas filters gas outgoing tank body 1 through the oil cap that keeps off who is connected with first hole 8, retrieve liquid through receiving pipe 5, discharge the discarded object through blow off pipe 6 jar body 1. The liquid inside the tank 1 is heated by the heating pipe 11. Can detect the interior liquid level of jar body 1 through level gauge 12 and level gauge backplate 13, through first hole 8, first top cap 9, first people's ladder 14, second hole 15, second top cap 16, second people's ladder 17, third hole 18, third top cap 19, third people's ladder 20 can get into jar internal portion of body 1. The position of the tank body 1 can be moved through the base 21 and the hanging legs.
In conclusion, the carbon dioxide drives the oil well output to realize the liquid-gas-solid separation through the comprehensive action of the inlet dissolving bin between the first partition plate and the tank body, the transition mixing bin between the first partition plate and the second partition plate, the gas recovery bin between the second partition plate and the tank body and the liquid medicine introduced into the medicine feeding pipe, and the harmless gas is discharged out of the tank body through the oil blocking cap, so that the environment is protected, and the harm to working personnel is reduced; the liquid enters the gathering and transportation pipe network through the liquid collecting pipe, so that the resource utilization rate is improved, and the damage to gathering and transportation equipment is reduced; the solid substance is discharged through the sewage discharge pipe and is pulled to a designated position for treatment, thereby protecting the environment.
Liquid such as oil water carried in the gas can flow back to the inside of the tank body through the oil blocking cap, and external liquid such as rainwater is prevented from entering. Through sieve pipe hole column structure and side by side connection, prevent that local temperature drop from causing the pipeline stifled to freeze and prevent that the solid in the output from entering into jar internal. Through the heating pipe, avoid jar body temperature to cross excessively to cause the pipeline to freeze stifled, and the heating pipe sets up to import low, and the export is high, avoids self to freeze stifled. The volume of the product in the tank and the liquid level in the tank can be measured by the liquid level meter, and the liquid level meter is fixedly protected by the protective plate of the liquid level meter.
This device can in time be maintained through first hole and first people's ladder, second hole and second people's ladder, third hole and third people's ladder, changes jar internal part accessory and clearance tank bottoms passageway. The position of the tank body can be moved through the base and the hanging legs.
All the above optional technical solutions may be combined arbitrarily to form the optional embodiments of the present disclosure, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a carbon dioxide displacement of reservoir oil well output well head processing apparatus which characterized in that, carbon dioxide displacement of reservoir oil well output well head processing apparatus includes: the device comprises a tank body (1), a first partition plate (2), a second partition plate (3), an inlet pipeline (4), a liquid collecting pipe (5), a sewage discharge pipe (6), a dosing pipe (7), a first hole (8) and a first top cover (9);
the first partition plate (2) and the second partition plate (3) are arranged inside the tank body (1); the inlet pipeline (4), the liquid collecting pipe (5) and the sewage discharge pipe (6) are arranged at the front end of the tank body (1); the dosing pipe (7) and the first hole (8) are arranged on the upper surface of the tank body (1); the first top cover (9) is arranged on the first hole (8);
wherein the lower end of the first clapboard (2) is provided with a preset number of liquid flow channels; the upper end of the second clapboard (3) is provided with a preset number of vent holes; the first partition plate (2) and the front end of the tank body (1) form an inlet dissolving bin; the first partition plate (2) and the second partition plate (3) form a transition mixing bin in the tank body (1); the second partition plate (3) and the rear end of the tank body (1) form a gas recovery cabin.
2. The carbon dioxide driven oil well output wellhead treatment device according to claim 1 wherein the first head cover (9) is an oil cap.
3. The carbon dioxide flooding oil well production wellhead treatment device according to claim 1, characterized in that it further comprises a screen (10);
one end of the sieve tube (10) is provided with a sieve tube clamp, and the sieve tube (10) is connected with one end of the inlet pipeline (4) through the sieve tube clamp.
4. The carbon dioxide flooding oil well output wellhead treatment device according to claim 1, characterized in that it further comprises a heating pipe (11);
the pipe orifices at two ends of the heating pipe (11) are provided with heating pipe quick connectors; the heating pipe (11) penetrates through the first partition plate (2) and the second partition plate (3) to be connected with the front end of the tank body (1).
5. The carbon dioxide flooding oil well output wellhead treatment device according to claim 1, characterized in that it further comprises a liquid level meter (12);
the liquid level meter (12) is arranged on the outer wall of the rear end of the tank body (1).
6. The carbon dioxide flooding oil well output wellhead treatment device according to claim 5, characterized in that it further comprises a gauge apron (13);
the liquid level meter guard plate (13) is arranged on the outer wall of the rear end of the tank body (1).
7. The carbon dioxide flooding oil well output wellhead treatment device according to claim 1, characterized in that it further comprises a first man ladder (14);
one end of the first ladder (14) is connected with one end of the first hole (8), and the other end of the first ladder (14) is connected with the bottom of the tank body (1).
8. The carbon dioxide flooding oil well output wellhead treatment device according to claim 1, characterized in that it further comprises a second hole (15), a second top cover (16) and a second man-ladder (17);
the second hole (15) is arranged at the top of the tank body (1), one end of the second hole (15) is connected with the second top cover (16), the other end of the second hole (15) is connected with one end of the second ladder (17), and the other end of the second ladder (17) is connected with the bottom of the tank body (1).
9. The carbon dioxide flooding oil well output wellhead treatment device according to claim 1, characterized in that it further comprises a third hole (18), a third top cover (19) and a third man ladder (20);
third hole (18) set up in jar body (1) top, third hole (18) one end with third top cap (19) are connected, third hole (18) other end with third people's ladder (20) one end is connected, third people's ladder (20) other end with jar body (1) bottom is connected.
10. The carbon dioxide flooding oil well output wellhead treatment device according to claim 1, characterized in that it further comprises a base (21);
the base (21) is connected with the bottom of the tank body (1), and the lower end of the base (21) is provided with a preset number of hanging legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919338.5A CN110821468A (en) | 2018-08-13 | 2018-08-13 | Carbon dioxide displacement of reservoir oil well output well head processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810919338.5A CN110821468A (en) | 2018-08-13 | 2018-08-13 | Carbon dioxide displacement of reservoir oil well output well head processing apparatus |
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| CN110821468A true CN110821468A (en) | 2020-02-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467644A (en) * | 2022-11-02 | 2022-12-13 | 华运隆腾机械制造有限公司 | Corrosion-resistant carbon dioxide gas production wellhead device |
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2018
- 2018-08-13 CN CN201810919338.5A patent/CN110821468A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467644A (en) * | 2022-11-02 | 2022-12-13 | 华运隆腾机械制造有限公司 | Corrosion-resistant carbon dioxide gas production wellhead device |
| CN115467644B (en) * | 2022-11-02 | 2023-02-10 | 华运隆腾机械制造有限公司 | Corrosion-resistant carbon dioxide gas production wellhead device |
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