CN115322761B - Preparation method of easily-flowback water locking agent for natural gas well - Google Patents
Preparation method of easily-flowback water locking agent for natural gas well Download PDFInfo
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- CN115322761B CN115322761B CN202210740166.1A CN202210740166A CN115322761B CN 115322761 B CN115322761 B CN 115322761B CN 202210740166 A CN202210740166 A CN 202210740166A CN 115322761 B CN115322761 B CN 115322761B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 40
- 239000002343 natural gas well Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 64
- 238000003756 stirring Methods 0.000 claims abstract description 63
- 239000013543 active substance Substances 0.000 claims abstract description 35
- 239000004094 surface-active agent Substances 0.000 claims abstract description 15
- -1 perfluoroalkyl sulfonate Chemical compound 0.000 claims abstract description 11
- 239000004386 Erythritol Substances 0.000 claims abstract description 7
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 7
- 235000019414 erythritol Nutrition 0.000 claims abstract description 7
- 229940009714 erythritol Drugs 0.000 claims abstract description 7
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920000570 polyether Polymers 0.000 claims abstract description 7
- 229920005862 polyol Polymers 0.000 claims abstract description 7
- 150000003077 polyols Chemical class 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 58
- 238000003860 storage Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000004146 energy storage Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 230000007306 turnover Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000012747 synergistic agent Substances 0.000 claims description 4
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000001125 extrusion Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 229930195725 Mannitol Natural products 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 235000010355 mannitol Nutrition 0.000 description 2
- 239000000594 mannitol Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/222—Control or regulation of the operation of the driving system, e.g. torque, speed or power of motors; of the position of mixing devices or elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
- B01F35/718051—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings being adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention belongs to the technical field of preparation of water-locking agent for drainage, and particularly relates to a preparation method of water-locking agent for easily-drained water for a natural gas well, which comprises the following steps: s1, adding a perfluoroalkyl sulfonate type fluorocarbon surfactant, a mannose erythritol lipid surfactant and part of water in a mixing and stirring device in a certain amount, controlling the temperature to be 30-40 ℃, and mixing and stirring for 1h; s2, adding the polyether polyol synergist and the residual water into the mixing and stirring equipment, raising the temperature to 40-80 ℃, and continuously mixing and stirring to obtain the water locking agent. According to the invention, mixing and stirring, active agent dispersing and feeding, automatic synergist adding and automatic production temperature adjusting can be realized by only one motor power source, so that the operation is convenient, the control is easy, and the energy is saved.
Description
Technical Field
The invention belongs to the technical field of preparation of water-locking agent for drainage, and particularly relates to a preparation method of water-locking agent for easily-drained water for a natural gas well.
Background
Water lock damage is widely found in the development of natural gas reservoirs and oil reservoirs. In the oil and gas field drilling and production process, after the well completion fluid, the drilling fluid, the fracturing fluid and other foreign fluids enter the oil and gas field reservoir, the retained fluid cannot be completely discharged out of the reservoir under the action of the ground pressure due to the retention effect of capillary force, so that the water saturation of the reservoir is continuously increased, the permeability is continuously reduced, and water lock damage is generated.
At present, the main method for removing the water lock injury of the natural gas reservoir adopts physical means such as increasing production pressure, thermal cleaning, formation fracturing and the like, and the water lock removing agent is used as the main water lock removing method. The water-locking remover is used for promoting the discharge of the blocked water in the natural gas reservoir stratum by utilizing the modes of reducing the surface tension of water, regulating and controlling the wettability of the stratum, reducing the viscosity of fluid and the like by utilizing agents such as a surfactant and the like, thereby achieving the effect of removing the water-locking injury.
At present, in the preparation process of the water-unlocking locking agent, various preparations are required to be added and prepared quantitatively respectively, and in order to ensure the stirring quality and the stirring efficiency, the materials are preferably added in a component manner, so that manual timing operation is required, the operation is obviously very tedious and inconvenient, and in the final addition of the synergistic agent, the heating operation is required, and the manual participation is also required, so that the whole production process of the water-unlocking locking agent is cumbersome and inconvenient, the labor cost is high, and the mistakes are easy to occur.
Therefore, we propose a preparation method of easily-flowback water locking agent for natural gas well to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems and provides a preparation method of an easily-returned water locking agent for a natural gas well.
In order to achieve the above purpose, the present invention provides the following technical solutions: the easily-flowback water locking agent for the natural gas well comprises the following components in percentage by mass: perfluoroalkyl sulfonate fluorocarbon surfactants: 6% -18%;
6-18% of mannitol erythritol lipid surfactant;
8% -35% of polyether polyol synergist;
water: 33% -80%.
A preparation method of an easily-flowback water locking agent for a natural gas well comprises the following steps:
s1, adding a perfluoroalkyl sulfonate type fluorocarbon surfactant, a mannose erythritol lipid surfactant and part of water in a mixing and stirring device in a certain amount, controlling the temperature to be 30-40 ℃, and mixing and stirring for 1h;
s2, adding the polyether polyol synergist and the residual water into the mixing and stirring equipment, raising the temperature to 40-80 ℃, and continuing mixing and stirring to obtain a water locking remover;
the mixing stirring equipment used in the preparation process of the easily-flowback water-unlocking locking agent for the natural gas well comprises a mixing tank, stirring rods are rotatably connected to the inner walls of the upper side and the lower side of the mixing tank, a plurality of stirring blades are symmetrically and fixedly connected to the rod walls of the stirring rods, a stirring motor is fixedly arranged at the lower end of the mixing tank, an upper end output shaft of the stirring motor is fixedly connected with the lower end of the stirring rod, the upper end of the stirring rod penetrates through the upper end of the mixing tank and is fixedly connected with a first cam, an active agent feeding mechanism and a synergistic agent feeding mechanism are fixedly arranged at the upper end of the mixing tank, heating wires which are arranged in a disc shape are fixedly arranged on the inner walls of the mixing tank, and a current adjusting mechanism connected with a heating wire power supply circuit is fixedly arranged at the outer side of the mixing tank and connected with the current adjusting mechanism through a transmission mechanism.
In the preparation method of the easily-flowback water locking agent for the natural gas well, the active agent feeding mechanism comprises an active agent storage box, a fixed plate is fixedly arranged in the active agent storage box, a socket is formed in the side wall of the active agent storage box, a movable plate is inserted in the corresponding socket in a sealing manner, a plurality of corresponding material through holes are formed in the surfaces of the fixed plate and the movable plate, a stress plate is fixedly connected to the outer side of the movable plate, a plurality of reset springs are fixedly connected between the stress plate and the active agent storage box, and the lower end of the active agent storage box is communicated with the mixing tank.
In the preparation method of the easy-to-flow water-unlocking lock agent for the natural gas well, the synergist feeding mechanism comprises a synergist storage box, an on-off shell is arranged on a discharging pipe at the lower end of the synergist storage box, a valve plate is rotatably connected in the on-off shell through a transmission shaft, one end of the transmission shaft penetrates out of the on-off shell and is fixedly connected with a turnover gear, an elastic energy storage mechanism is fixedly arranged at the rear side of the upper end of the mixing tank, an output end of the elastic energy storage mechanism is fixedly connected with a rack which is in sliding connection with the upper end of the mixing tank, the rack is meshed with the turnover gear, a pressurizing box is fixedly arranged at the upper end of the mixing tank, a piston plate is arranged in the pressurizing box, a plurality of extrusion rods are fixedly connected to the side wall of the piston plate, one ends of the extrusion rods penetrate out of the pressurizing box and are fixedly connected with the same extrusion plate, a plurality of return springs sleeved outside the extrusion rods are fixedly connected between the extrusion plate and the pressurizing box, the pressurizing box is communicated with the elastic energy storage mechanism through a vent pipe, and the pressurizing box is further provided with a one-way vent pipe, and the vent pipe is arranged on the pressurizing valve.
In the preparation method of the easily-flowback water locking agent for the natural gas well, the current adjusting mechanism comprises an insulating adjusting shell fixedly arranged on the outer side of the mixing tank, a resistor strip is fixedly arranged in the adjusting shell, an adjusting block is connected onto the adjusting shell in a sliding mode, one side of the adjusting block is fixedly connected with a conductive connecting sheet in contact with the resistor strip, and the upper end of the adjusting block is fixedly connected with a lifting rod.
In the preparation method of the easily-flowback water locking agent for the natural gas well, the transmission mechanism comprises a bearing seat fixedly connected to the upper end of the mixing tank, a connecting shaft is rotatably sleeved in the bearing seat through a ball bearing, one end of the connecting shaft is fixedly connected with a transmission gear meshed with the rack, and the other end of the connecting shaft is fixedly connected with a second cam.
In the preparation method of the easily-flowback water locking agent for the natural gas well, the elastic energy storage mechanism comprises a positioning cylinder, an air pressure piston is sleeved in the positioning cylinder, a compression spring is fixedly connected to the front side of the air pressure piston, an opening is formed in the front side of the positioning cylinder, an end cover is magnetically connected to the position corresponding to the opening, a first annular magnetic block is fixedly embedded in the rear side of the end cover, and a second annular magnetic block is fixedly embedded in the front end of the positioning cylinder.
In the preparation method of the easily-flowback water locking agent for the natural gas well, the outer side of the end cover is symmetrically and fixedly connected with a plurality of limiting sliding rods, and the outer side of the front end of the positioning cylinder is fixedly connected with a plurality of limiting sliding cylinders which are in sliding sleeve joint with the limiting sliding rods.
Compared with the prior art, the invention provides a preparation method of the easily-flowback water locking agent for a natural gas well, which has the following beneficial effects:
1. according to the preparation method of the easily-flowback water locking agent for the natural gas well, through the mixing tank, the stirring rod, the stirring blade, the stirring motor, the first cam and the active agent feeding mechanism, intermittent active agent feeding can be realized, feeding uniformity is guaranteed, stirring quality and efficiency are further improved, the easily-flowback water locking agent is linked with the stirring motor, extra power equipment is not needed, energy is saved, and the easily-controlled operation is realized.
2. According to the preparation method of the easily-flowback water locking agent for the natural gas well, through the provided synergist feeding mechanism and the elastic energy storage mechanism, the addition of the synergist can be automatically carried out after the active agent is stirred for a certain time, the timing operation is not required to be manually controlled, the operation is quick and convenient, additional power equipment is not required, and the production integrity is better.
3. According to the preparation method of the easily-flowback water locking agent for the natural gas well, through the transmission mechanism and the current adjusting mechanism, the current can be automatically adjusted when the synergist is added, so that the production temperature is increased along with the automatic adjustment, linkage control can be realized, and the operation is convenient.
To sum up: the utility model discloses a can realize compounding stirring, active agent dispersed pay-off, synergist automatic feeding and to the automatically regulated of production temperature through a motor power supply only, convenient operation, easily control, the energy saving.
Drawings
FIG. 1 is a schematic structural diagram of a method for preparing a water locking agent easy to be flow back and unlock for a natural gas well;
FIG. 2 is a schematic diagram of an active agent feeding mechanism of a preparation method of an easily-flowback water locking agent for a natural gas well;
FIG. 3 is a schematic diagram of a synergist feeding mechanism of a preparation method of an easily-flowback water locking agent for a natural gas well;
FIG. 4 is a schematic diagram of a pressurized tank structure of a preparation method of an easily-flowback water locking agent for a natural gas well;
FIG. 5 is a schematic diagram of a current adjusting mechanism of a method for preparing a water locking agent easy to be flow back for a natural gas well;
fig. 6 is a schematic structural diagram of an elastic energy storage mechanism of the preparation method of the easily-backflow water locking agent for the natural gas well.
In the figure: 1. a mixing tank; 2. a stirring rod; 3. stirring blades; 4. a stirring motor; 5. a first cam; 6. an active agent feeding mechanism; 61. an active agent storage tank; 62. a fixing plate; 63. a movable plate; 64. a material opening; 65. a force-bearing plate; 66. a return spring; 7. a synergist feeding mechanism; 71. a synergist storage box; 72. the shell is opened and closed; 73. a transmission shaft; 74. a valve plate; 75. a turnover gear; 76. a rack; 77. a pressurizing box; 78. a piston plate; 79. extruding the push rod; 710. a push plate; 711. a return spring; 712. a vent pipe; 8. a heating wire; 9. a current adjusting mechanism; 91. an adjustment housing; 92. a resistor strip; 93. an adjusting block; 94. a conductive tab; 95. a lifting rod; 10. a transmission mechanism; 101. a bearing seat; 102. a connecting shaft; 103. a transmission gear; 104. a second cam; 11. an elastic energy storage mechanism; 111. a positioning cylinder; 112. a pneumatic piston; 113. a compression spring; 114. an end cap; 115. a first annular magnetic block; 116. a second annular magnetic block; 117. a limit slide bar; 118. and a limiting sliding cylinder.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
Referring to fig. 1-6, an easily-flowback water locking agent for a natural gas well comprises the following components in percentage by mass: perfluoroalkyl sulfonate fluorocarbon surfactants: 6% -18%;
6-18% of mannitol erythritol lipid surfactant;
8% -35% of polyether polyol synergist;
water: 33% -80%.
A preparation method of an easily-flowback water locking agent for a natural gas well comprises the following steps:
s1, adding a perfluoroalkyl sulfonate type fluorocarbon surfactant, a mannose erythritol lipid surfactant and part of water in a mixing and stirring device in a certain amount, controlling the temperature to be 30-40 ℃, and mixing and stirring for 1h;
s2, adding the polyether polyol synergist and the residual water into the mixing and stirring equipment, raising the temperature to 40-80 ℃, and continuing mixing and stirring to obtain a water locking remover;
the mixing stirring equipment used in the preparation process of the easily-flowback water-locking agent for the natural gas well comprises a mixing tank 1, wherein stirring rods 2 are rotatably connected to the inner walls of one side, opposite to the upper side and the lower side, of the mixing tank 1, the rod walls of the stirring rods 2 are symmetrically and fixedly connected with a plurality of stirring blades 3, the lower end of the mixing tank 1 is fixedly provided with a stirring motor 4, an upper end output shaft of the stirring motor 4 is fixedly connected with the lower end of the stirring rod 2, the upper end of the stirring rod 2 penetrates through the upper end of the mixing tank 1 and is fixedly connected with a first cam 5, the upper end of the mixing tank 1 is fixedly provided with an active agent feeding mechanism 6 and a synergist feeding mechanism 7, heating wires 8 which are arranged in a disc shape are fixedly arranged on the inner walls of the mixing tank 1, current adjusting mechanisms 9 connected with power supply circuits of the heating wires 8 are fixedly arranged on the outer sides of the mixing tank 1, and the synergist feeding mechanism 7 and the current adjusting mechanisms 9 are connected through transmission mechanisms 10.
The active agent feeding mechanism 6 comprises an active agent storage box 61, a fixed plate 62 is fixedly arranged in the active agent storage box 61, a jack is formed in the side wall of the active agent storage box 61, a movable plate 63 is sleeved in the corresponding jack in a sealing manner, a plurality of corresponding material through holes 64 are formed in the surfaces of the fixed plate 62 and the movable plate 63, a stress plate 65 is fixedly connected to the outer side of the movable plate 63, a plurality of reset springs 66 are fixedly connected between the stress plate 65 and the active agent storage box 61, and the lower end of the active agent storage box 61 is communicated with the mixing tank 1.
The synergist feeding mechanism 7 comprises a synergist storage box 71, an on-off shell 72 is arranged on a discharging pipe at the lower end of the synergist storage box 71, a valve plate 74 is rotatably connected in the on-off shell 72 through a transmission shaft 73, one end of the transmission shaft 73 penetrates out of the on-off shell 72 and is fixedly connected with a turnover gear 75, an elastic energy storage mechanism 11 is fixedly arranged at the rear side of the upper end of the mixing tank 1, a rack 76 which is slidingly connected to the upper end of the mixing tank 1 is fixedly connected to the output end of the elastic energy storage mechanism 11, the rack 76 is meshed with the turnover gear 75, a pressurizing box 77 is fixedly arranged at the upper end of the mixing tank 1, a piston plate 78 is arranged in the pressurizing box 77, a plurality of extrusion pushing rods 79 are fixedly connected to the side wall of the piston plate 78, one end of each extrusion pushing rod 79 penetrates out of the pressurizing box 77 and is fixedly connected with the same extrusion pushing plate 710, a plurality of return springs 711 which are sleeved outside the extrusion pushing rods 79 are fixedly connected between the extrusion pushing plates 710 and the pressurizing box 77, the pressurizing box 77 are communicated through a vent pipe 712, a vent hole is further arranged on the pressurizing box 77, and the pressurizing box 77 is further provided with a vent hole 712, and the vent pipe 712 is provided with a one-way valve.
The current adjusting mechanism 9 comprises an insulating adjusting shell 91 fixedly arranged on the outer side of the mixing tank 1, a resistor strip 92 is fixedly arranged in the adjusting shell 91, an adjusting block 93 is connected to the adjusting shell 91 in a sliding mode, a conductive tab 94 in contact with the resistor strip 92 is fixedly connected to one side of the adjusting block 93, and a lifting rod 95 is fixedly connected to the upper end of the adjusting block 93.
The transmission mechanism 10 comprises a bearing seat 101 fixedly connected to the upper end of the mixing tank 1, a connecting shaft 102 is rotatably sleeved in the bearing seat 101 through a ball bearing, one end of the connecting shaft 102 is fixedly connected with a transmission gear 103 meshed with the rack 76, and the other end of the connecting shaft 102 is fixedly connected with a second cam 104.
The elastic energy storage mechanism 11 comprises a positioning cylinder 111, an air pressure piston 112 is sleeved in the positioning cylinder 111, a compression spring 113 is fixedly connected to the front side of the air pressure piston 112, an opening is formed in the front side of the positioning cylinder 111, an end cover 114 is magnetically connected to the corresponding opening, a first annular magnetic block 115 is fixedly embedded in the rear side of the end cover 114, and a second annular magnetic block 116 is fixedly embedded in the front end of the positioning cylinder 111.
The outer side of the end cover 114 is symmetrically and fixedly connected with a plurality of limit sliding rods 117, and the outer side of the front end of the positioning cylinder 111 is fixedly connected with a plurality of limit sliding cylinders 118 which are in sliding sleeve joint with the limit sliding rods 117.
The principle of operation of the present invention will now be described as follows: through the mixing tank 1, the stirring rod 2, the stirring blade 3, the stirring motor 4, the first cam 5 and the active agent feeding mechanism 6, the stirring motor 4 drives the stirring rod 2 and the stirring blade 3 to rotate so as to mix and stir materials, the upper end of the stirring rod 2 drives the first cam 5 to synchronously rotate, the first cam 5 continuously extrudes and pushes the stress plate 65, and the reset spring 66 is matched for reset, so that the movable plate 63 can be driven to move back and forth, further, the material inlets 64 on the surfaces of the movable plate 63 and the fixed plate 62 are intermittently overlapped, further, active agent materials stored in the active agent storage box 61 automatically fall into the mixing tank 1, intermittent active agent feeding can be realized, feeding uniformity is ensured, stirring quality and efficiency are further improved, and the stirring tank is linked with the stirring motor 4, does not need additional power equipment, saves energy sources and is easy to control;
through the synergist feeding mechanism 7 and the elastic energy storage mechanism 11, the first cam 5 also continuously pushes the extrusion plate 710 when rotating, the extrusion plate 710 pushes the piston plate 78 to move in the pressurizing box 77 through the extrusion plate 79, air is pushed into the positioning cylinder 111 through the vent pipe 712, the compression spring 113 is compressed along with the increase of air pressure in the positioning cylinder 111, when an active agent is mixed for a certain time, the continuous elasticity of the compression spring 113 is larger than the magnetic attraction between the first annular magnetic block 115 and the second annular magnetic block 116, the end cover 114 is flushed away at one moment, the rack 76 is synchronously pushed to move, the valve plate 74 is driven to overturn by 90 degrees through the meshing action of the rack 76 and the overturning gear 75, the discharging pipe of the synergist storage box 71 is smooth, the feeding of the synergist is realized, the synergist is automatically added after the active agent is stirred for a certain time, the operation is not needed to be controlled manually, the operation is fast and convenient, additional power equipment is not needed, and the production integrity is better;
through the drive mechanism 10 and the electric current adjustment mechanism 9 that are equipped with, the meshing effect through rack 76 and drive gear 103 drives connecting axle 102 in bearing frame 101 internal rotation, and then drive second cam 104 synchronous rotation, push up lifter 95 through the cam and move down, lifter 95 promotes regulating block 93 and moves down, regulating block 93 drives conductive tab 94 and slides on resistance strip 92 for the resistance of access heating wire power supply circuit reduces, and the electric current increases, can be to the automatic regulation of heater strip 8 access electric current when the synergist adds, and then makes the production temperature rise along with it, can realize coordinated control, convenient operation.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (1)
1. A preparation method of an easily-flowback water locking agent for a natural gas well is characterized by comprising the following steps of: the method comprises the following steps:
s1, adding a perfluoroalkyl sulfonate type fluorocarbon surfactant, a mannose erythritol lipid surfactant and part of water in a mixing and stirring device in a certain amount, controlling the temperature to be 30-40 ℃, and mixing and stirring for 1h;
s2, adding the polyether polyol synergist and the residual water into the mixing and stirring equipment, raising the temperature to 40-80 ℃, and continuing mixing and stirring to obtain a water locking agent;
the easily-flowback water locking agent for the natural gas well comprises the following components in percentage by mass: perfluoroalkyl sulfonate fluorocarbon surfactants: 6-18%, 6-18% of mannose erythritol lipid surfactant, 8-35% of polyether polyol synergist and water: 33% -80%;
the mixing stirring equipment used in the preparation process of the easily-flowback water locking agent for the natural gas well comprises a mixing tank (1), wherein stirring rods (2) are rotationally connected to the inner walls of one side, which are opposite to the upper side and the lower side, of the mixing tank (1), a plurality of stirring blades (3) are symmetrically and fixedly connected to the rod walls of the stirring rods (2), a stirring motor (4) is fixedly arranged at the lower end of the mixing tank (1), an upper output shaft of the stirring motor (4) is fixedly connected with the lower end of the stirring rod (2), the upper end of the stirring rod (2) penetrates through the upper end of the mixing tank (1), a first cam (5) is fixedly connected to the upper end of the mixing tank (1), an active agent feeding mechanism (6) and a synergistic agent feeding mechanism (7) are fixedly arranged at the upper end of the mixing tank (1), heating wires (8) which are arranged in a disc shape are fixedly arranged on the inner walls of the mixing tank (1), a current adjusting mechanism (9) which is connected with a power supply circuit of the heating wires (8) are fixedly arranged at the outer side of the mixing tank (1), and the synergistic agent feeding mechanism (7) is connected with the current adjusting mechanism (9) through a transmission mechanism (10).
The active agent feeding mechanism (6) comprises an active agent storage box (61), a fixed plate (62) is fixedly arranged in the active agent storage box (61), a jack is formed in the side wall of the active agent storage box (61), a movable plate (63) is sleeved in the corresponding jack in a sealing manner, a plurality of corresponding material through holes (64) are formed in the surfaces of the fixed plate (62) and the movable plate (63), a stress plate (65) is fixedly connected to the outer side of the movable plate (63), a plurality of reset springs (66) are fixedly connected between the stress plate (65) and the active agent storage box (61), and the lower end of the active agent storage box (61) is communicated with the mixing tank (1);
the synergist feeding mechanism (7) comprises a synergist storage box (71), an on-off shell (72) is arranged on a discharging pipe at the lower end of the synergist storage box (71), a valve plate (74) is rotatably connected in the on-off shell (72) through a transmission shaft (73), one end of the transmission shaft (73) penetrates out of the on-off shell (72) and is fixedly connected with a turnover gear (75), an elastic energy storage mechanism (11) is fixedly arranged at the rear side of the upper end of the mixing tank (1), the output end of the elastic energy storage mechanism (11) is fixedly connected with a rack (76) which is slidably connected to the upper end of the mixing tank (1), the rack (76) is meshed with the turnover gear (75), a pressurizing box (77) is fixedly arranged at the upper end of the mixing tank (1), a piston plate (78) is arranged in the pressurizing box (77), one end of the plurality of pushing rods (79) penetrates out of the pressurizing box (77) and is fixedly connected with a plurality of pushing rods (79), the same pushing plates (710) are fixedly connected with a plurality of pushing rods (77) through a plurality of pushing rods (79), the pressurizing pipes (710) are fixedly connected with the pressurizing pipes (711) through the pressurizing pipes (77), the pressurizing pipes (710) and are fixedly connected with the pressurizing pipes (711), the supercharging box (77) is also provided with a gas supplementing port, and the gas supplementing port and the breather pipe (712) are provided with one-way valves;
the current adjusting mechanism (9) comprises an insulating adjusting shell (91) fixedly arranged on the outer side of the mixing tank (1), a resistor strip (92) is fixedly arranged in the adjusting shell (91), an adjusting block (93) is connected onto the adjusting shell (91) in a sliding mode, one side of the adjusting block (93) is fixedly connected with a conductive tab (94) which is in contact with the resistor strip (92), and the upper end of the adjusting block (93) is fixedly connected with a lifting rod (95);
the transmission mechanism (10) comprises a bearing seat (101) fixedly connected to the upper end of the mixing tank (1), a connecting shaft (102) is rotatably sleeved in the bearing seat (101) through a ball bearing, one end of the connecting shaft (102) is fixedly connected with a transmission gear (103) meshed with the rack (76), and the other end of the connecting shaft (102) is fixedly connected with a second cam (104);
the elastic energy storage mechanism (11) comprises a positioning cylinder (111), an air pressure piston (112) is sleeved in the positioning cylinder (111), a compression spring (113) is fixedly connected to the front side of the air pressure piston (112), an opening is formed in the front side of the positioning cylinder (111), an end cover (114) is magnetically connected to the corresponding opening, a first annular magnetic block (115) is fixedly embedded in the rear side of the end cover (114), and a second annular magnetic block (116) is fixedly embedded in the front end of the positioning cylinder (111);
the outer side of the end cover (114) is symmetrically and fixedly connected with a plurality of limit sliding rods (117), and the outer side of the front end of the positioning cylinder (111) is fixedly connected with a plurality of limit sliding cylinders (118) which are in sliding sleeve joint with the limit sliding rods (117).
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