CN114573753A - High molecular resin adhesive for profile control and water plugging of oil well and water well - Google Patents
High molecular resin adhesive for profile control and water plugging of oil well and water well Download PDFInfo
- Publication number
- CN114573753A CN114573753A CN202210211690.XA CN202210211690A CN114573753A CN 114573753 A CN114573753 A CN 114573753A CN 202210211690 A CN202210211690 A CN 202210211690A CN 114573753 A CN114573753 A CN 114573753A
- Authority
- CN
- China
- Prior art keywords
- water
- oil
- resin adhesive
- profile control
- polymer resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses a high molecular resin adhesive for profile control and water plugging of oil and water wells, which relates to the technical field of oil and gas exploitation and consists of the following components: 3-4% of high molecular resin, 3-4% of water-soluble monomer, 0.05-0.1% of cross-linking agent, 0.005-0.01% of initiator, 0.1-0.2% of deoxidant, 0.1-0.2% of antacid stabilizer and the balance of water; the invention uses macromolecule resin and water-soluble resin to generate resin free radical by the initiator, the free radical and the monomer have chain reaction polymerization, and the cross-linking is macromolecule network structure, to form the resin adhesive with higher integral strength, the macromolecule resin adhesive can effectively block the oil-water well crack, karst cave water logging, water channeling, to realize the oil deposit deep profile control, with ideal blocking effect, to be used practically.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to a high-molecular resin adhesive for profile control and water plugging of oil and water wells.
Background
At present, land petroleum in China is developed by water injection basically. Under the condition of oil well exploitation, the water outlet phenomenon is more common, and the water content is improved along with the continuous improvement of the water injection development strength. According to previous investigation results, the water content in the current oil field in China reaches 80%, and particularly in the east region, the water content reaches 90%. Under the background, the water content in the petroleum is increased continuously, so that the exploitation energy consumption is improved, the yield is reduced, and the water plugging work is more important.
As the development of the oil field gradually enters the middle and later stages, some oil wells are exposed to water or flooded too early due to water layer channeling, bottom water coning or water injection and edge water burst; the uniformity of an injection profile is influenced due to the water outlet of an oil well, injected water in certain blocks quickly breaks through along a high-permeability layer to cause the water outlet of a large number of oil wells, the yield of crude oil is greatly influenced, the water outlet problem of the oil field is more common, and a water plugging agent is urgently needed to be used for controlling and solving.
The water shutoff agent mainly used at present is a water shutoff agent mainly prepared from water-based hydrolyzed polyacrylamide, and the chemical profile control agent has the advantages of low material cost, high effectiveness, simple and convenient field use process and low field operation requirement, but the water shutoff agent is easy to degrade at high temperature and has poor long-term stability, and a porous medium plugging experiment shows that the water-based hydrolyzed polyacrylamide gel is not easy to form colloid in the dynamic migration and shearing process of a porous medium; in highly mineralized saline water, the thickening property to water is insufficient, and the like.
Therefore, a polymer resin adhesive for profile control and water shutoff of oil wells and water wells is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a high-molecular resin adhesive for profile control and water plugging of oil and water wells, which solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the high molecular resin adhesive for oil and water well profile control and water shutoff consists of the following components: 3-4% of high polymer resin, 3-4% of water-soluble monomer, 0.05-0.1% of cross-linking agent, 0.005-0.01% of initiator, 0.1-0.2% of deoxidant, 0.1-0.2% of antacid stabilizer and the balance of water.
Furthermore, the polymer resin is carboxymethyl starch.
Further, the water-soluble monomer is 2-acrylamide-2-methylpropanesulfonic acid.
Still further, the crosslinking agent is N-methylformamide.
Still further, the initiator is potassium peroxypyrophosphate.
Further, the oxygen scavenger is sodium bisulfite.
Still further, the antacid stabilizer is scleroglucan.
A preparation process of a high molecular resin adhesive for oil and water well profile control and water plugging comprises the following steps:
and 6, pouring the prepared polymer resin adhesive solution into a high-temperature-resistant sealed test tube on the basis of the step 5, sealing the test tube, standing in a constant-temperature aging oven at 120 ℃ for about 2-4 hours, filling through a quantitative structure after standing, and filling to obtain the polymer resin adhesive for oil-water well profile control and water plugging.
A device of polymer resin glue for profile control and water plugging of oil and water wells is a quantitative structure in step 5 and comprises first support frames, wherein a conveyor belt is rotatably connected between the first support frames through a bearing fixedly connected with the first support frames, a first driving motor is fixedly installed on the rear side wall of each first support frame, and the first driving motor is fixedly connected with one end of a rotating shaft of the conveyor belt;
the top of the first support frame is used for a righting structure for guiding an oil drum, the righting structure comprises a bolt, a positioning hole, a sliding transverse plate, a tension spring, a convex block, a straight limiting plate, an inclined guiding plate and a sliding hole, the tension spring is fixedly connected to the top of the convex block, the bolt is fixedly connected to the top of the tension spring, the convex block is provided with the sliding hole, the sliding transverse plate is attached and slidably connected in the sliding hole, the sliding transverse plate is uniformly provided with the positioning hole, the restoring force of the tension spring drives the bottom of the bolt to be inserted into the positioning hole, the inner end of the sliding transverse plate is fixedly connected with the straight limiting plate, and the right end of the straight limiting plate is fixedly connected with the inclined guiding plate;
the quantitative blanking device comprises a first support frame, a second support frame, a material cylinder, a quantitative blanking structure, a third support frame, a gas pipe, a cylinder, an outer cover, an n-shaped plate, a baffle, a blanking hole, a Z-shaped frame, a rotary electromagnet, a cover plate and a rotating shaft, wherein the first support frame is arranged at the left end of a righting structure, the top of the second support frame is fixedly connected with the material cylinder, the top of the material cylinder is connected with the quantitative blanking structure, the bottom of the cylinder is fixedly connected with the n-shaped plate, the bottom of the n-shaped plate is fixedly connected with the Z-shaped frame, the bottom of the Z-shaped frame is fixedly connected with the baffle, the outer wall of the baffle is in fit sliding connection with the interior of the material cylinder, one end of the baffle is provided with the blanking hole for blanking, the top of the Z-shaped frame is fixedly connected with the outer cover and the rotary electromagnet, the outer cover is arranged outside the rotary electromagnet, and the output end of the rotary electromagnet is fixedly connected with the rotating shaft, the bottom of the rotating shaft is fixedly connected with a cover plate, a bottom plate of the cover plate is attached to the top of the baffle plate in a sliding connection mode, and an air pipe used for balancing pressure below the baffle plate is fixedly connected to a straight hole in the top of the cover plate;
the bottom of the charging barrel is fixedly connected with a discharging pipe, and a control valve is fixedly arranged on the discharging pipe;
the first support frame is provided with a positioning structure for limiting the oil drum at the lower part of the blanking pipe, the positioning structure comprises a first C-shaped plate, a second C-shaped plate, a sliding groove, a threaded rod, a rotating rod, a threaded groove, a U-shaped plate, a connecting straight block, a second driving motor, a third driving motor and a sliding plate, the output end of the third driving motor is fixedly connected with a threaded rod, the threaded rod is in threaded connection with a connecting straight block, the top of the connecting straight block is fixedly connected with a U-shaped plate, one end of the U-shaped plate is fixedly connected with a second driving motor, the output end of the second driving motor is fixedly connected with a rotating rod, the rotating rod is symmetrically provided with thread grooves, the rotating rod is connected with a sliding plate through a thread groove and a thread, the side wall of the sliding plate is respectively and fixedly connected with a second C-shaped plate and a first C-shaped plate, and the side wall of the first support frame is provided with a sliding groove matched with the second C-shaped plate and the first C-shaped plate for use.
Furthermore, the convex block is fixedly arranged at the top of the first support frame, and the convex block is arranged at the right end of the second support frame.
Furthermore, during feeding, the rotary electromagnet drives the rotating shaft to rotate, the rotating shaft drives the cover plate to rotate to the outer side of the discharging hole, the rotary electromagnet resets after feeding is finished, and the rotary electromagnet drives the cover plate to rotate right above the discharging hole to plug the discharging hole.
Furthermore, the third support frame is fixedly arranged at the top of the charging barrel.
Furthermore, during blanking, the air pipe guides air into the baffle, and the discharge of materials below the baffle is guaranteed.
Furthermore, the third driving motor is fixedly installed on the side wall of the first support frame, and the side wall of the first support frame is rotatably connected with the threaded rod through a bearing fixedly connected with the side wall of the first support frame.
Furthermore, the upright part of the U-shaped plate is rotatably connected with a rotating rod through a bearing fixedly connected with the U-shaped plate.
Furthermore, the second C-shaped plate and the first C-shaped plate are arranged at two ends of the blanking pipe.
The beneficial effects of the invention are:
according to the quantitative filling device, the positioning hole of the righting structure is selected according to the size of the quantitatively filled oil drum, the bolt is pulled upwards, the sliding transverse plate is slid, the sliding transverse plate drives the selected positioning hole to move to the position below the bolt, the restoring force of the tension spring drives the bolt to be inserted into the positioning hole after the bolt is loosened, so that the oil drum which is suitable for quantitative filling is arranged between the straight limiting plates, the oblique guide plate conveniently guides the quantitatively filled oil drum into the straight limiting plate, and then the oil drum moves to the position below the blanking pipe through the straight limiting plate;
according to the invention, a second driving motor of a positioning structure drives a rotating rod to rotate, the rotating rod drives a sliding plate to move through a thread groove, the sliding plate drives a first C-shaped plate and a second C-shaped plate to move, so that oil barrels suitable for different quantitative filling sizes are arranged between the first C-shaped plate and the second C-shaped plate, before filling, a third driving motor drives a threaded rod to rotate, the threaded rod drives a connecting straight block to move backwards, the connecting straight block drives a U-shaped plate to move backwards, the U-shaped plate drives the second C-shaped plate and the first C-shaped plate to move backwards, the second C-shaped plate and the first C-shaped plate to move to the rearmost end, an oil barrel moves to the right end of the first C-shaped plate through the second C-shaped plate, the first C-shaped plate limits the oil barrel and then fills, after filling, the third driving motor drives the threaded rod to rotate, the threaded rod drives the connecting straight block to move forwards, the connecting straight block drives the U-shaped plate to move forwards, the U-shaped plate drives the second C-shaped plate and the first C-shaped plate to move forwards, the second C-shaped plate and the first C-shaped plate move to the foremost end, the oil drum on the right side of the second C-shaped plate is blocked by the second C-shaped plate, the oil drum on the right end of the first C-shaped plate is discharged from the first C-shaped plate, and the oil drum is conveniently limited below the discharging pipe in sequence;
according to the invention, the cylinder of the quantitative blanking structure is started according to the ration of quantitative blanking, the cylinder drives the baffle plate to move through the n-shaped plate and the Z-shaped frame, the cylinder is stopped when the storage amount below the baffle plate meets the quantitative requirement, the rotary electromagnet drives the rotary shaft to rotate during feeding, the rotary shaft drives the cover plate to rotate to the outer side of the blanking hole, the rotary electromagnet resets after the feeding is finished, the rotary electromagnet drives the cover plate to rotate right above the blanking hole to block the blanking hole, and then the storage amount below the baffle plate is subjected to quantitative blanking through the blanking pipe, so that the device can conveniently perform quantitative blanking;
according to the invention, the polymer resin and the water-soluble resin are initiated by the initiator to form resin free radicals, the free radicals and the monomers are subjected to chain reaction polymerization and are crosslinked into a macromolecular network structure, so that a resin adhesive with higher overall strength is formed, and the polymer resin adhesive for oil-water well profile control and water plugging can effectively plug oil-water well cracks, karst cave water flooding and water channeling, so that the deep profile control of an oil reservoir can be realized, the plugging effect is ideal, and the practical use is facilitated; the high molecular resin adhesive for profile control and water shutoff of the oil-water well is resistant to temperature and salt, has low viscosity before gelling and good injection performance, does not need to move a tubular column during construction, allows the plugging agent to enter a water channeling high flow guide channel preferentially, performs selective plugging, adjusts the pressure difference of an oil-water channel of a reservoir after gelling, increases the flow area, achieves the purpose of controlling water and increasing oil, and realizes effective water shutoff by uniformly spreading a pure viscous fluid to a dominant channel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings 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 that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the manufacturing process of the present invention;
FIG. 2 is a graph of injection rate versus injection pressure for sand packed pipes of different permeability according to the present invention;
FIG. 3 is a diagram of a Sydansk bottle visualization of the present invention;
FIG. 4 is a water flooding graph of a 30m long sand-packed pipe of the present invention after being injected with 10m plugging agent to form gel;
FIG. 5 is a graph showing the plugging rate of the resin paste according to the present invention;
FIG. 6 is a graph of the relationship between plugging rate and injection amount of the present invention;
FIG. 7 is a water-channeling blocking water production curve of the water injection well of the Xinjiang oil field H2410 according to the invention;
FIG. 8 is a pressure curve diagram of plugging of the Jidong oilfield water injection well G26-24 according to the invention;
FIG. 9 is a scanning electron microscope image of the polymer resin adhesive of the present invention;
FIG. 10 is a graph of the resistance coefficients for different migration positions in an embodiment of the present invention;
FIG. 11 is a water absorption cross section of a water injection well G26-24 in a Jidong oilfield according to the present invention;
FIG. 12 is a graph of production data from a Jidong oilfield water injection well G26-24 wells according to the present invention;
FIG. 13 is a schematic structural view of the present invention;
FIG. 14 is a rear view of the structure of the present invention;
FIG. 15 is a top view of the structure of the present invention;
FIG. 16 is a structural cross-sectional view of the present invention;
FIG. 17 is a bottom view in cross-section of the structure of the present invention;
FIG. 18 is a right side cross-sectional view of the structure of the present invention;
FIG. 19 is a schematic view of the centralizing structure of the invention;
FIG. 20 is an enlarged view of the structure at A of FIG. 17 in accordance with the present invention;
FIG. 21 is an enlarged view of the structure at B of FIG. 18 in accordance with the present invention;
FIG. 22 is a schematic view of a rotatable shaft and its connection structure according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. the automatic feeding device comprises a first support frame 2, a first driving motor 3, a conveyor belt 4, a centering structure 401, a bolt 402, a positioning hole 403, a sliding transverse plate 404, a tension spring 405, a convex block 406, a straight limiting plate 407, an inclined guide plate 408, a sliding hole 5, a second support frame 6, a positioning structure 601, a first C-shaped plate 602, a second C-shaped plate 603, a sliding groove 604, a threaded rod 605, a rotating rod 606, a threaded groove 607, a U-shaped plate 608, a connecting straight block 609, a second driving motor 610, a third driving motor 611, a sliding plate 7, a control valve 8, a feeding pipe 9, a charging barrel 10, a quantitative feeding structure 1001, a third support frame 1002, a gas pipe 1003, a cylinder 1004, a housing 1005, an n-shaped plate 1006, a baffle 1007, a feeding hole 1008, a Z-shaped frame 1009, a rotating electromagnet 1011 and a rotating shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
As shown in the figures 1-8 of the drawings,
the high molecular resin adhesive for oil and water well profile control and water shutoff consists of the following components: 3% of high polymer resin, 4% of water-soluble monomer, 0.1% of cross-linking agent, 0.01% of initiator, 0.2% of oxygen scavenger, 0.1% of acid-resistant stabilizer and the balance of water.
The high molecular resin is carboxymethyl starch.
The water-soluble monomer is 2-acrylamide-2-methylpropanesulfonic acid.
The cross-linking agent is N-methylformamide.
The initiator is potassium peroxypyrophosphate.
The oxygen scavenger is sodium bisulfite.
The antacid stabilizer is scleroglucan.
A preparation process of a high molecular resin adhesive for oil and water well profile control and water plugging comprises the following steps:
and 6, pouring the prepared polymer resin adhesive solution into a high-temperature-resistant sealed test tube on the basis of the step 5, sealing the test tube, standing the test tube in a 120-DEG C constant-temperature aging oven for about 4 hours, filling the test tube through a quantitative structure after standing, and filling to obtain the polymer resin adhesive for profile control and water plugging of the oil-water well.
Example 2
Example 2 is a further modification of example 1.
As shown in the figures 1-8 of the drawings,
the high molecular resin adhesive for oil and water well profile control and water shutoff consists of the following components: 4% of high polymer resin, 3% of water-soluble monomer, 0.2% of cross-linking agent, 0.05% of initiator, 0.2% of oxygen scavenger, 0.2% of acid-resistant stabilizer and the balance of water.
The high molecular resin is carboxymethyl starch.
The water-soluble monomer is 2-acrylamide-2-methylpropanesulfonic acid.
The cross-linking agent is N-methylformamide.
The initiator is potassium peroxypyrophosphate.
The oxygen scavenger is sodium bisulfite.
The antacid stabilizer is scleroglucan.
A preparation process of a high molecular resin adhesive for oil and water well profile control and water plugging comprises the following steps:
and 6, pouring the prepared polymer resin adhesive solution into a high-temperature-resistant sealed test tube on the basis of the step 5, sealing the test tube, standing in a 120-DEG C constant-temperature aging oven for about 5 hours, filling through a quantitative structure after standing, and filling to obtain the polymer resin adhesive for oil-water well profile control and water plugging.
The tests of example 1 and example 2 were carried out according to the standard Q/SH 10201493-2014/strong jelly
| Item | Index (I) | Index (I) |
| Gel strength | ≥9x106mpa.s | ≥1x105mpa.s |
| Modulus of elasticity Pa | ≥10 | ≥10 |
| Rate of water shutoff | ≥93％ | ≥95％ |
| Water plugging rate after 100PV water scouring | ≥85％ | ≥90％ |
| Viscosity retention after 7 days at constant temperature | ≥98％ | ≥98％ |
| Gel forming time | ≤7h | ≤7h |
| Breakthrough pressure gradient | 6.5MPa/m | 8.8MPa/m |
The invention uses macromolecule resin and water-soluble resin to generate resin free radical by the initiator, the free radical and the monomer have chain reaction polymerization, and the cross-linking is macromolecule network structure, to form the resin adhesive with higher integral strength, the macromolecule resin adhesive can effectively block the oil-water well crack, karst cave water logging, water channeling, to realize the oil deposit deep profile control, with ideal blocking effect, to be used practically.
Detailed description of the preferred embodiment
As shown in fig. 9, after the high polymer resin adhesive is injected, the scanning electron microscope is used for blocking the water flow dominant channel in an integral slug type manner by using the high polymer resin adhesive, the high polymer resin adhesive is temperature resistant and salt resistant, the viscosity is low before gelling, the injection performance is good, a tubular column does not need to be moved during construction, the blocking agent preferentially enters the water channeling high flow guide channel to be selectively blocked, the pressure difference of the reservoir oil-water channel is adjusted after gelling, the flow area is increased, the purpose of controlling water and increasing oil is achieved, and the pure viscous fluid uniformly spreads to the dominant channel to realize effective water blocking.
The specific operation is as follows:
during the process of injecting 10m of plugging agent into a 30m long sand-filled pipe, the plugging agent migrates in a porous medium in a manner of a slug, the resistance coefficient slowly decreases during the migration process, namely the apparent viscosity of the plugging agent decreases along with shearing, when the plugging agent migrates to a position of 8.16m from an inlet, the resistance coefficient decreases from 50 to about 40, and correspondingly, the apparent viscosity decreases by about 20%, and the plugging agent has certain shear resistance, as shown in detail in fig. 10. The long sand-packed pipe plugging experimental result shows that after the resin adhesive plugs the pore passage, the high-molecular resin adhesive has good scour resistance at the same time, and the details are shown in table 1.
TABLE 1
The Jidong oil field G26-24 is a high 5-section one-well in the high and deep north, the water absorption profile is measured in 8 months and 17 days in 2017, the data shows that the 28# layer absorbs 24.82% of water and the 29# layer absorbs 75.18% of water, the water absorption profile is a main water absorption layer, and the profile control is carried out on the well according to the research and the requirement of controlling the 28# and 29# main water absorption layers corresponding to the high water content of the oil well. Profile control construction is carried out in 2018, 5 months and 10 days, the temperature of the well stratum is about 130 ℃, the selected polymer resin gel is injected into 430 squares, and water injection is recovered after the well is closed for 3 days.
As shown in fig. 11 and 12, after the well profile control, the water absorption of the layer No. 29 of the main water absorption layer is reduced to 31.77 percent from 75.18 percent before construction; the No. 28 layer is reduced to 0 from 24.82 percent before construction, and does not absorb water at all. And the 27b layer is restarted, the water absorption capacity is 50.52 percent, and the water absorption capacity of the 30# layer is 17.71 percent, so that the water absorption profile is effectively improved, and the shallow adjustment construction is very successful.
Example 3
Example 3 is a further modification to example 1.
As shown in fig. 13 to 22, a device of polymer resin glue for profile control and water shutoff of oil and water wells is a quantitative structure in the third step, and comprises first support frames 1, wherein the first support frames 1 are rotatably connected with a conveyor belt 3 through bearings fixedly connected with each other, a first driving motor 2 is fixedly installed on the rear side wall of each first support frame 1, and the first driving motor 2 is fixedly connected with one end of a rotating shaft of the conveyor belt 3;
the top of the first support frame 1 is used for guiding an oil drum, the righting structure 4 comprises a bolt 401, a positioning hole 402, a sliding transverse plate 403, a tension spring 404, a convex block 405, a straight limiting plate 406, an inclined guiding plate 407 and a sliding hole 408, the tension spring 404 is fixedly connected to the top of the convex block 405, the bolt 401 is fixedly connected to the top of the tension spring 404, the sliding hole 408 is formed in the convex block 405, the sliding transverse plate 403 is attached and slidably connected in the sliding hole 408, the positioning hole 402 is uniformly formed in the sliding transverse plate 403, the restoring force of the tension spring 404 drives the bottom of the bolt 401 to be inserted into the positioning hole 402, the straight limiting plate 406 is fixedly connected to the inner end of the sliding transverse plate 403, the inclined guiding plate 407 is fixedly connected to the right end of the straight limiting plate 406, the convex block 405 is fixedly mounted at the top of the first support frame 1, the convex block 405 is arranged at the right end of the second support frame 5, and the positioning hole 402 of the righting structure 4 is selected according to the size of the oil drum which is quantitatively filled, the bolt 401 is pulled upwards, the sliding transverse plate 403 is slid, the sliding transverse plate 403 drives the selected positioning hole 402 to move to the position below the bolt 401, the bolt 401 is driven to be inserted into the positioning hole 402 by the restoring force of the tension spring 404 after the bolt 401 is loosened, so that the oil drum suitable for quantitative filling is arranged between the straight limiting plates 406, the oil drum suitable for quantitative filling is conveniently guided into the straight limiting plates 406 by the inclined guide plate 407, and then the oil drum is moved to the position below the blanking pipe 8 through the straight limiting plates 406;
the left end of the righting structure 4 of the first support frame 1 is provided with a second support frame 5, the top of the second support frame 5 is fixedly connected with a charging barrel 9, the top of the charging barrel 9 is connected with a quantitative blanking structure 10, the quantitative blanking structure 10 comprises a third support frame 1001, an air pipe 1002, an air cylinder 1003, an outer cover 1004, an n-shaped plate 1005, a baffle 1006, a blanking hole 1007, a Z-shaped frame 1008, a rotary electromagnet 1009, a cover plate 1010 and a rotating shaft 1011, the top of the third support frame 1001 is fixedly connected with the air cylinder 1003, the bottom of the air cylinder 1003 is fixedly connected with the n-shaped plate 1005, the bottom of the n-shaped plate 1005 is fixedly connected with the Z-shaped frame 1008, the bottom of the Z-shaped frame 1008 is fixedly connected with a baffle 1006, the outer wall of the baffle 1006 is in fit sliding connection with the interior of the charging barrel 9, one end of the baffle 1006 is provided with the blanking hole 1007 for blanking, the top of the Z-shaped frame 1008 is fixedly connected with the outer cover 1004 and the rotary electromagnet 1009, the outer cover 1004 is arranged outside the rotary electromagnet 1009, the output end of the rotating electromagnet 1009 is fixedly connected with a rotating shaft 1011, the bottom of the rotating shaft 1011 is fixedly connected with a cover plate 1010, the bottom plate of the cover plate 1010 is in fit sliding connection with the top of the baffle 1006, a straight hole at the top of the cover plate 1010 is fixedly connected with an air pipe 1002 for balancing pressure below the baffle 1006, the rotating electromagnet 1009 drives the rotating shaft 1011 to rotate during feeding, the rotating shaft 1011 drives the cover plate 1010 to rotate to the outer side of the blanking hole 1007, the rotating electromagnet 1009 resets after feeding, the rotating electromagnet 1009 drives the cover plate 1010 to rotate to block the blanking hole 1007 right above the blanking hole, the third support frame 1001 is fixedly arranged at the top of the charging barrel 9, the air pipe 1002 guides air into the baffle 1006 during blanking, discharge of materials below the baffle 1006 is ensured, the air cylinder 1003 of the quantitative blanking structure 10 is started according to quantitative blanking, the air cylinder 1003 drives the baffle 1006 to move through the n-shaped plate 1005 and the Z-shaped frame 1008, stopping the air cylinder 1003 when the storage amount below the baffle 1006 meets the quantitative requirement, driving the rotating shaft 1011 to rotate by the rotating electromagnet 1009 during feeding, driving the cover plate 1010 to rotate to the outer side of the blanking hole 1007 by the rotating shaft 1011, resetting the rotating electromagnet 1009 after feeding is finished, driving the cover plate 1010 to rotate by the rotating electromagnet 1009 to block the blanking hole 1007, and then quantitatively blanking the storage amount below the baffle 1006 through the blanking pipe 8, so that the device is convenient for quantitatively blanking;
the bottom of the charging barrel 9 is fixedly connected with a discharging pipe 8, and the discharging pipe 8 is fixedly provided with a control valve 7.
Example 4
Example 4 is a further modification of example 3.
As shown in fig. 13 to 22, a positioning structure 6 for oil drum limiting is disposed below the discharging pipe 8 of the first support frame 1, the positioning structure 6 includes a first C-shaped plate 601, a second C-shaped plate 602, a sliding groove 603, a threaded rod 604, a rotating rod 605, a threaded groove 606, a U-shaped plate 607, a connecting straight block 608, a second driving motor 609, a third driving motor 610 and a sliding plate 611, an output end of the third driving motor 610 is fixedly connected with the threaded rod 604, the threaded rod 604 is in threaded connection with the connecting straight block 608, a top of the connecting straight block 608 is fixedly connected with the U-shaped plate 607, one end of the U-shaped plate 607 is fixedly connected with the second driving motor 609, an output end of the second driving motor 609 is fixedly connected with the rotating rod 605, the threaded groove 606 is symmetrically formed in the rotating rod 605, the sliding plate 611 is in threaded connection with the rotating rod 605 through the threaded groove 606, side walls of the sliding plate 611 are respectively fixedly connected with the second C-shaped plate 602 and the first C-shaped plate 601, the side wall of the first support frame 1 is provided with a sliding groove 603 matched with the second C-shaped plate 602 and the first C-shaped plate 601 for use, the third driving motor 610 is fixedly installed on the side wall of the first support frame 1, the side wall of the first support frame 1 is rotatably connected with the threaded rod 604 through a fixedly connected bearing, the upright part of the U-shaped plate 607 is rotatably connected with a rotating rod 605 through a fixedly connected bearing, the second C-shaped plate 602 and the first C-shaped plate 601 are arranged at two ends of the blanking pipe 8, the second driving motor 609 of the positioning structure 6 drives the rotating rod 605 to rotate, the rotating rod 605 drives the sliding plate 611 to move through the threaded groove 606, the sliding plate 611 drives the first C-shaped plate 601 and the second C-shaped plate 602 to move, so that the first C-shaped plate 601 and the second C-shaped plate 602 are suitable for oil drum sizes of different quantitative filling, before filling, the third driving motor 610 drives the threaded rod 604 to rotate, the threaded rod 604 drives the connecting straight block 608 to move backwards, the connecting straight block 608 drives the U-shaped plate 607 to move backwards, the U-shaped plate 607 drives the second C-shaped plate 602 and the first C-shaped plate 601 to move backwards, the second C-shaped plate 602 and the first C-shaped plate 601 move to the rearmost end, the oil drum moves to the right end of the first C-shaped plate 601 through the second C-shaped plate 602, the first C-shaped plate 601 limits the oil drum and then performs filling, after filling, third driving motor 610 drives threaded rod 604 and rotates, threaded rod 604 drives and connects straight piece 608 and move forward, it drives U-shaped plate 607 and moves forward to connect straight piece 608, U-shaped plate 607 drives second C-shaped plate 602 and first C-shaped plate 601 and moves forward, second C-shaped plate 602 and first C-shaped plate 601 move to foremost, second C-shaped plate 602 blocks up the oil drum on second C-shaped plate 602 right side, the oil drum of first C-shaped plate 601 right-hand member is discharged from first C-shaped plate 601, conveniently arrange oil drum spacing in order in unloading pipe 8 and put the below.
When the quantitative blanking device is used, according to the quantitative filling requirement, the air cylinder 1003 of the quantitative blanking structure 10 is started, the air cylinder 1003 drives the baffle 1006 to move through the n-shaped plate 1005 and the Z-shaped frame 1008, and the air cylinder 1003 is stopped when the storage capacity below the baffle 1006 meets the quantitative requirement;
selecting a positioning hole 402 of a righting structure 4 according to the size of a quantitatively filled oil drum, pulling a bolt 401 upwards, sliding a sliding transverse plate 403, driving the selected positioning hole 402 to move to the position below the bolt 401 by the sliding transverse plate 403, driving the bolt 401 to be inserted into the positioning hole 402 by the restoring force of a pulling spring 404 after the bolt 401 is loosened, so that the oil drum which is suitable for quantitative filling between straight positioning plates 406 is enabled, driving a rotating rod 605 to rotate by a second driving motor 609 of the positioning structure 6, driving the sliding plate 611 to move by the rotating rod 605 through a thread groove 606, and driving a first C-shaped plate 601 and a second C-shaped plate 602 to move by the sliding plate 611, so that the oil drum which is suitable for different quantitative filling between the first C-shaped plate 601 and the second C-shaped plate 602 is enabled to be suitable for different oil drum sizes; before filling, the third driving motor 610 drives the threaded rod 604 to rotate, the threaded rod 604 drives the connecting straight block 608 to move backwards, the connecting straight block 608 drives the U-shaped plate 607 to move backwards, the U-shaped plate 607 drives the second C-shaped plate 602 and the first C-shaped plate 601 to move backwards, the second C-shaped plate 602 and the first C-shaped plate 601 move to the rearmost end, an oil drum is placed on the conveyor belt 3, the conveyor belt 3 is driven by the first driving motor 2 to move, the oil drum is driven by the conveyor belt 3 to move, the inclined guide plate 407 conveniently guides the quantitatively filled oil drum into the straight limit plate 406 and then moves below the blanking pipe 8 through the straight limit plate 406, the oil drum moves to the right end of the first C-shaped plate 601 through the second C-shaped plate 602, the first C-shaped plate 601 limits the oil drum and then fills, the oil drum is conveniently limited below the blanking pipe 8 in sequence, then the baffle 1006 is loaded, the rotary electromagnet 1009 drives the rotary shaft 1011 to rotate during loading, the rotating shaft 1011 drives the cover plate 1010 to rotate to the outer side of the blanking hole 1007, the rotating electromagnet 1009 resets after the feeding is finished, the rotating electromagnet 1009 drives the cover plate 1010 to rotate right above the blanking hole 1007 to block the blanking hole 1007, then the storage amount below the baffle 1006 is quantitatively blanked through the blanking pipe 8, so that the quantitative blanking is conveniently performed, after the quantitative filling, the third driving motor 610 drives the threaded rod 604 to rotate, the threaded rod 604 drives the connecting straight block 608 to move forwards, the connecting straight block 608 drives the U-shaped plate 607 to move forwards, the U-shaped plate 607 drives the second C-shaped plate 602 and the first C-shaped plate 601 to move forwards, the second C-shaped plate 602 and the first C-shaped plate 601 move to the foremost end, the second C-shaped plate 602 blocks an oil barrel on the right side of the second C-shaped plate 602, the oil barrel on the right side of the first C-shaped plate 601 is discharged from the first C-shaped plate 601, and then the third driving motor 610 drives the threaded rod 604 to rotate, the threaded rod 604 drives the connecting straight block 608 to move backwards, the connecting straight block 608 drives the U-shaped plate 607 to move backwards, the U-shaped plate 607 drives the second C-shaped plate 602 and the first C-shaped plate 601 to move backwards, and the second C-shaped plate 602 and the first C-shaped plate 601 move to the rearmost end.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The high molecular resin adhesive for profile control and water plugging of oil and water wells is characterized in that: the polymer resin adhesive for profile control and water plugging of oil and water wells comprises the following components: 3-4% of high molecular resin, 3-4% of water-soluble monomer, 0.05-0.1% of cross-linking agent, 0.005-0.01% of initiator, 0.1-0.2% of deoxidant, 0.1-0.2% of antacid stabilizer and the balance of water.
2. A polymer resin adhesive for profile control and water shutoff of oil and water wells as claimed in claim 1, wherein: the high molecular resin is carboxymethyl starch.
3. A polymer resin adhesive for profile control and water shutoff of oil and water wells as claimed in claim 1, wherein: the water-soluble monomer is 2-acrylamide-2-methylpropanesulfonic acid.
4. The polymer resin adhesive for oil-water and well profile control and water shutoff according to claim 1, which is characterized in that: the cross-linking agent is N-methylformamide.
5. A polymer resin adhesive for profile control and water shutoff of oil and water wells as claimed in claim 1, wherein: the initiator is potassium peroxypyrophosphate.
6. The polymer resin adhesive for profile control and water shutoff of oil and water wells as claimed in claim 1, wherein: the oxygen scavenger is sodium bisulfite.
7. A polymer resin adhesive for profile control and water shutoff of oil and water wells as claimed in claim 1, wherein: the antacid stabilizer is scleroglucan.
8. A process for preparing the high-molecular resin adhesive for profile control and water shutoff of oil and water wells according to any one of claims 1 to 7, which comprises the following steps: the preparation process comprises the following steps:
step 1, placing a beaker on a platform below a stirring rod of a digital display mechanical stirrer, adding water into the beaker, adjusting the height of the stirring rod until the stirring rod completely submerges over the water surface, opening a rotation speed adjusting knob, and adjusting the rotation speed to 800 rpm;
step 2, adding an antacid stabilizer on the basis of the step 1, and continuously shearing for 28-32min until the scleroglucan is dissolved;
step 3, slowly introducing the polymer resin into the water surface being sheared on the basis of the step 2, reducing the rotating speed of the stirrer to 300-400rpm to obtain a homogeneous solution, and continuously stirring for 25-30min after the polymer resin is completely dissolved into the water;
step 4, adding the water-soluble monomer on the basis of the step 3, and shearing for 5-10min until the water-soluble monomer is uniformly dissolved;
step 5, sequentially adding a cross-linking agent, an oxygen scavenger and an initiator on the basis of the step 4, and stirring and shearing for 5-10min, so that the preparation of the polymer resin glue solution is finished;
and 6, pouring the prepared polymer resin adhesive solution into a high-temperature-resistant sealed test tube on the basis of the step 5, sealing the test tube, standing in a constant-temperature aging oven at 120 ℃ for about 2-4 hours, filling through a quantitative structure after standing, and filling to obtain the polymer resin adhesive for oil and water well profile control and water plugging.
9. A device of polymer resin glue for oil and water well profile control and water shutoff according to claim 8, characterized in that: the device is a quantitative structure in step 6 and comprises first support frames (1), a conveyor belt (3) is rotatably connected between the first support frames (1) through bearings fixedly connected, a first driving motor (2) is fixedly mounted on the rear side wall of each first support frame (1), and the first driving motor (2) is fixedly connected with one end of a rotating shaft of the conveyor belt (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211690.XA CN114573753B (en) | 2022-03-04 | 2022-03-04 | High molecular resin adhesive for profile control and water plugging of oil well and water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211690.XA CN114573753B (en) | 2022-03-04 | 2022-03-04 | High molecular resin adhesive for profile control and water plugging of oil well and water well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114573753A true CN114573753A (en) | 2022-06-03 |
| CN114573753B CN114573753B (en) | 2022-12-09 |
Family
ID=81773987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210211690.XA Active CN114573753B (en) | 2022-03-04 | 2022-03-04 | High molecular resin adhesive for profile control and water plugging of oil well and water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114573753B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6418701B1 (en) * | 2000-03-03 | 2002-07-16 | Ramon Munoz Navarro | Automated filling machine and method |
| USRE38747E1 (en) * | 1994-03-02 | 2005-06-28 | Robert Bosch Packaging Technology, Inc. | Vial filling apparatus |
| CN102180277A (en) * | 2011-04-13 | 2011-09-14 | 无锡市德瑞包装设备制造有限公司 | Automatic open-bag feeding, filling and sealing equipment |
| CN104087275A (en) * | 2014-07-14 | 2014-10-08 | 中国石油大学(华东) | High-temperature-resistant and high-salt-resistant fine gel particle as profile control agent as well as preparation method and application of fine gel particle |
| CN106590557A (en) * | 2016-11-23 | 2017-04-26 | 中国石油集团长城钻探工程有限公司 | Gel plugging agent for plugging fluid channeling big channel of medium-temperature oil reservoir and preparation method thereof |
| CN107814881A (en) * | 2017-11-14 | 2018-03-20 | 西南石油大学 | A kind of quick copolymer gel of temperature sensitive salt and preparation method thereof |
| CN207524950U (en) * | 2017-11-30 | 2018-06-22 | 增城市峰源实业有限公司 | A kind of auto-filling equipment |
| CN207738426U (en) * | 2017-09-09 | 2018-08-17 | 广州佳怡宝保健食品有限公司 | A kind of oral solution filling and sealing machine |
| CN109776728A (en) * | 2019-01-14 | 2019-05-21 | 中国石油大学(华东) | Temporary plugging agent for drilling fluid and preparation method thereof and water-base drilling fluid and application |
| CN110183579A (en) * | 2019-06-06 | 2019-08-30 | 陕西延长石油(集团)有限责任公司研究院 | A kind of temperature-sensitive hydrogel sealing agent and the preparation method and application thereof |
| US20200017618A1 (en) * | 2016-12-15 | 2020-01-16 | Clariant International Ltd. | Water-soluble and/or water-swellable hybrid polymer |
| CN110804428A (en) * | 2019-10-14 | 2020-02-18 | 中国石油化工股份有限公司 | Profile control composition, profile control agent and preparation method thereof |
| CN111348405A (en) * | 2020-03-02 | 2020-06-30 | 广州汉方医学生物科技有限公司 | Automatic righting device for inverted bottle |
| CN212348424U (en) * | 2019-12-19 | 2021-01-15 | 安徽百事丽防水建材科技有限公司 | Coating production is with quantitative discharging device |
| CN112960151A (en) * | 2021-01-29 | 2021-06-15 | 福州三合元生物科技有限公司 | Production method and production equipment of nerve-soothing and sleep-promoting solid beverage |
| CN113355009A (en) * | 2021-07-01 | 2021-09-07 | 广州市修米德科技有限公司 | Marine coating for preventing marine organisms from attaching and processing technology |
| CN214875732U (en) * | 2021-04-01 | 2021-11-26 | 德州华凯农业科技有限公司 | Filling equipment is used in water-retaining agent production |
| CN214931150U (en) * | 2021-06-17 | 2021-11-30 | 山西鼎鑫肥业股份有限公司 | Full-automatic bag sealing machine for producing calcium ammonium nitrate |
| CN113755144A (en) * | 2021-08-31 | 2021-12-07 | 中国石油大学(北京) | Gel water shutoff agent and preparation method thereof |
| CN215323604U (en) * | 2021-06-11 | 2021-12-28 | 合能智造（北京）机械有限公司 | Multifunctional supporting table for liquid filling machine |
-
2022
- 2022-03-04 CN CN202210211690.XA patent/CN114573753B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE38747E1 (en) * | 1994-03-02 | 2005-06-28 | Robert Bosch Packaging Technology, Inc. | Vial filling apparatus |
| US6418701B1 (en) * | 2000-03-03 | 2002-07-16 | Ramon Munoz Navarro | Automated filling machine and method |
| CN102180277A (en) * | 2011-04-13 | 2011-09-14 | 无锡市德瑞包装设备制造有限公司 | Automatic open-bag feeding, filling and sealing equipment |
| CN104087275A (en) * | 2014-07-14 | 2014-10-08 | 中国石油大学(华东) | High-temperature-resistant and high-salt-resistant fine gel particle as profile control agent as well as preparation method and application of fine gel particle |
| CN106590557A (en) * | 2016-11-23 | 2017-04-26 | 中国石油集团长城钻探工程有限公司 | Gel plugging agent for plugging fluid channeling big channel of medium-temperature oil reservoir and preparation method thereof |
| US20200017618A1 (en) * | 2016-12-15 | 2020-01-16 | Clariant International Ltd. | Water-soluble and/or water-swellable hybrid polymer |
| CN207738426U (en) * | 2017-09-09 | 2018-08-17 | 广州佳怡宝保健食品有限公司 | A kind of oral solution filling and sealing machine |
| CN107814881A (en) * | 2017-11-14 | 2018-03-20 | 西南石油大学 | A kind of quick copolymer gel of temperature sensitive salt and preparation method thereof |
| CN207524950U (en) * | 2017-11-30 | 2018-06-22 | 增城市峰源实业有限公司 | A kind of auto-filling equipment |
| CN109776728A (en) * | 2019-01-14 | 2019-05-21 | 中国石油大学(华东) | Temporary plugging agent for drilling fluid and preparation method thereof and water-base drilling fluid and application |
| CN110183579A (en) * | 2019-06-06 | 2019-08-30 | 陕西延长石油(集团)有限责任公司研究院 | A kind of temperature-sensitive hydrogel sealing agent and the preparation method and application thereof |
| CN110804428A (en) * | 2019-10-14 | 2020-02-18 | 中国石油化工股份有限公司 | Profile control composition, profile control agent and preparation method thereof |
| CN212348424U (en) * | 2019-12-19 | 2021-01-15 | 安徽百事丽防水建材科技有限公司 | Coating production is with quantitative discharging device |
| CN111348405A (en) * | 2020-03-02 | 2020-06-30 | 广州汉方医学生物科技有限公司 | Automatic righting device for inverted bottle |
| CN112960151A (en) * | 2021-01-29 | 2021-06-15 | 福州三合元生物科技有限公司 | Production method and production equipment of nerve-soothing and sleep-promoting solid beverage |
| CN214875732U (en) * | 2021-04-01 | 2021-11-26 | 德州华凯农业科技有限公司 | Filling equipment is used in water-retaining agent production |
| CN215323604U (en) * | 2021-06-11 | 2021-12-28 | 合能智造（北京）机械有限公司 | Multifunctional supporting table for liquid filling machine |
| CN214931150U (en) * | 2021-06-17 | 2021-11-30 | 山西鼎鑫肥业股份有限公司 | Full-automatic bag sealing machine for producing calcium ammonium nitrate |
| CN113355009A (en) * | 2021-07-01 | 2021-09-07 | 广州市修米德科技有限公司 | Marine coating for preventing marine organisms from attaching and processing technology |
| CN113755144A (en) * | 2021-08-31 | 2021-12-07 | 中国石油大学(北京) | Gel water shutoff agent and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 刘文龙等: "油田化学耐盐堵剂研究进展", 《内蒙古石油化工》 * |
| 李林: ""耐温抗盐丙烯酰胺类复合堵水剂的研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 段久芳编著: "《天然高分子材料》", 30 September 2016, 华中科技大学出版社 * |
| 潘虹等: "天然高分子用于油田堵水调剖的研究进展", 《高分子通报》 * |
| 荣元帅等: "淀粉接枝共聚AM/AMPS预交联凝胶调剖剂ROS性能评价", 《精细石油化工进展》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114573753B (en) | 2022-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104632123B (en) | A kind of ultralow kill-job blocking method | |
| CN108825177B (en) | Horizontal well profile control and flooding process | |
| CN102434124A (en) | Successive-compounding-process based plugging method for well drilling | |
| CN106639971A (en) | High pressure-bearing blocking method for perforation shot hole | |
| CN115538972B (en) | Drilling plugging method suitable for malignant leakage stratum | |
| CN113512414B (en) | Delayed crosslinking type high-temperature-resistant low-friction-resistance aggravated guanidine gum fracturing fluid and application method thereof | |
| CN114573753B (en) | High molecular resin adhesive for profile control and water plugging of oil well and water well | |
| CN106479462A (en) | A kind of blocking agent and preparation method thereof and oil well casing leak stopping envelope alter method | |
| CN112961662A (en) | Wetting reversal agent, wetting reversal liquid and pressure flooding water injection method | |
| CN110804428A (en) | Profile control composition, profile control agent and preparation method thereof | |
| CN110305644B (en) | Preparation and application of leakage-reducing flexible colloidal particle well-flushing fluid | |
| CN114044850B (en) | High-strength temporary plugging agent capable of realizing well zone seepage and preparation method thereof | |
| CN106590557A (en) | Gel plugging agent for plugging fluid channeling big channel of medium-temperature oil reservoir and preparation method thereof | |
| CN113136185A (en) | Organic water plugging gel for low-temperature hypersalinity oil reservoir | |
| CN114183095B (en) | Plugging method for large-scale cracks of fractured reservoir | |
| CN116410713A (en) | Cross-linking time controllable plugging agent based on low molecular weight polyacrylamide and preparation method thereof | |
| CN115505070A (en) | High-temperature-resistant expansion fiber resin plugging material, preparation method thereof and application thereof in leak prevention and plugging of well cementation cement slurry | |
| CN111622725B (en) | Profile control method suitable for heterogeneous oil reservoir after polymer flooding | |
| CN112876612A (en) | Temperature-sensitive low-fluid-loss underground cross-linking agent for plugging cracks and application thereof | |
| CN111963100A (en) | Water plugging method for fractured reservoir | |
| CN115075789B (en) | Method for improving recovery ratio of discontinuous chemical flooding of strong heterogeneous oil field | |
| CN114426826B (en) | Plugging slug composition, oil displacement slug composition, profile control and profile control agent and application | |
| CN114790882B (en) | Repeated fracturing production method | |
| CN111154467B (en) | Open hole section shaft treatment fluid and construction method thereof | |
| CN115340855B (en) | Interpenetrating network gel profile control agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |