CN106947449B - A kind of shielding diverting agent and preparation method thereof, application method - Google Patents
A kind of shielding diverting agent and preparation method thereof, application method Download PDFInfo
- Publication number
- CN106947449B CN106947449B CN201710170063.5A CN201710170063A CN106947449B CN 106947449 B CN106947449 B CN 106947449B CN 201710170063 A CN201710170063 A CN 201710170063A CN 106947449 B CN106947449 B CN 106947449B
- Authority
- CN
- China
- Prior art keywords
- diverting agent
- shielding diverting
- shielding
- high molecular
- molecular polymer
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/10—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of amides or imides
Abstract
The present invention provides a kind of shielding diverting agents and preparation method thereof, application method, belong to oil well reagent technique field, shielding diverting agent is made by the raw material of following mass fraction: high molecular polymer 30%~50%, heat stabilizer 10%~20%, proppant 10%~40%, fluid loss additive 10%~20% and initiator 10%~20%；And disclose preparation method.The invention has the benefit that plugging strength is high, sealing ratiod is greater than 95% at 20Mpa；Without matching liquid, operation timeliness can be improved；Well-flushing can reduce the pollution of formation blockage caused by lost circulation；The agent is easy to fall off under opposite force effect, and the particle split away off is easy to be carried away by the liquid flowed；Resume permeability rate >=95%；Compatibility is strong, and clear water, brine, oil field purification sewage can be used as carrying medium.
Description
Technical field
The present invention relates to oil well reagent technique fields more particularly to a kind of shielding diverting agent and preparation method thereof, user
Method.
Background technique
As oil field long period of development produces, ground layer original dynamic equilibrium is seriously damaged, oil well in process of production, sand
Oil reservoir, holddown, oil well halt production phenomenon is buried to happen occasionally.Oil well sand washing, well-flushing are that oil field produces one of common operation means, especially
That oil field development enters the middle and later periods, the oil well production time is long, voidage-injection imbalance, and formation depletion leakage is serious, cementing strength by
Serious to destroy, well killing fluid only import but no export cannot establish normal circulation, and sand washing, well-flushing work can not carry out, and seriously perplex oil field
Normal production.Fracturing fluid leaks into oil reservoir, causes pore plugging, polluted oil reservoir, and oil well output is caused to reduce.
Summary of the invention
The purpose of the present invention is to provide a kind of shielding diverting agents and preparation method thereof, application method.
For achieving the above object, the present invention is realized by following measure: a kind of shielding diverting agent, the shielding
Diverting agent is made by the raw material of following mass fraction: high molecular polymer 30%~50%, heat stabilizer 10%~20%, support
Agent 10%~40%, fluid loss additive 10%~20% and initiator 10%~20%.
Wherein, high molecular polymer is the mass parts of hydrolyzed polyacrylamide and polyacrylamide sylvite according to 1:0.5-1
Number ratio mixes.
Wherein, the heat stabilizer is the mixture of -2 methyl propane sulfonic acid of 2- acrylamido, sodium thiosulfate and formaldehyde,
Their mass parts ratio is 1:0.3-0.5:0.5-1.
Wherein, the proppant is formulated by 55-70% bentonite, 15-20% calcium carbonate and 10-30% calcium oxide.
Wherein, the fluid loss additive is by low-viscosity sodium carboxymethyl cellulose salt and hydrolyzed polyacrylonitrile ammonium salt according to 1:0.5-
1 mass ratio mixing.
Wherein, the initiator is that potassium peroxydisulfate, sodium hydrogensulfite and potassium chloride are matched by the mass ratio of 1:1-1.5:7-10
System.
In addition, the present invention also provides the preparation methods of the shielding diverting agent, wherein preparation method includes following step
It is rapid:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer
Concentration is to 25%~30%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, heat are added according to the proportion
Stabilizer, proppant and fluid loss additive are heated to 55-60 DEG C, carry out polymerization reaction 4.5-5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 65-70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
Wherein, the particle that the 5th step obtains, 0.1~1.0mm of partial size account for 80% or more.
The application method of shielding diverting agent uses the solution that shielding diverting agent addition clear water is configured to 1%~2%.
The invention has the benefit that present invention elasticity is big, chance water is insoluble, deforms under external force and removes external force
It can restore to the original state, which has good unidirectional plugging action to imbibition and the serious stratum of leakage, is mainly used for sand washing, well-flushing etc.
Temporary stifled, leakproof in operation process；The agent has good unidirectional plugging action to imbibition and the serious stratum of leakage, washes with conventional
Well agent technology is compared, the technology have temporarily stifled success rate is high, small to reservoir injury, scene is easy to use, reduce with liquid waiting and
The features such as improving sand washing efficiency, especially suitable for long well section, multilayer position lost-circulation zone continuous sand flushing well-flushing；Plugging strength is high,
Sealing ratiod is greater than 95% under 20Mpa；Without matching liquid, operation timeliness can be improved；Well-flushing is with can reducing caused by lost circulation
Layer blocking pollution；The agent is easy to fall off under opposite force effect, and the liquid that the particle split away off is easy to be flowed carries out
It goes；Resume permeability rate >=95%；Compatibility is strong, and clear water, brine, oil field purification sewage can be used as carrying medium.
Detailed description of the invention
Fig. 1 is expansion multiple curve of the shielding diverting agent in tap water.
Fig. 2 is shielding diverting agent in the expansion multiple that salinity is in 100000mg/L water flooding.
Fig. 3 is to cover diverting agent to block pressure testing.
Fig. 4 is permeability decrease curve after blocking.
Fig. 5 is injection pressure change curve after blocking.
Fig. 6 is resume permeability curve after rinsing.
Fig. 7 is that injection pressure declines change curve after rinsing.
Fig. 8 is the relationship of elastic granule partial size and elasticity modulus.
Fig. 9 is the heat resistance of elastic granule.
Figure 10 is that well-flushing opens effect after pumping.
Specific embodiment
For achieving the above object, the present invention is realized by following measure: a kind of shielding diverting agent, the shielding
Diverting agent is made by the raw material of following mass fraction: high molecular polymer 30%~50%, heat stabilizer 10%~20%, support
Agent 10%~40%, fluid loss additive 10%~20% and initiator 10%~20%.
Wherein, high molecular polymer is the mass parts of hydrolyzed polyacrylamide and polyacrylamide sylvite according to 1:0.5-1
Number ratio mixes.
Wherein, the heat stabilizer is the mixture of -2 methyl propane sulfonic acid of 2- acrylamido, sodium thiosulfate and formaldehyde,
Their mass parts ratio is 1:0.3-0.5:0.5-1.
Wherein, the proppant is formulated by 55-70% bentonite, 15-20% calcium carbonate and 10-30% calcium oxide.
Wherein, the fluid loss additive is by low-viscosity sodium carboxymethyl cellulose salt and hydrolyzed polyacrylonitrile ammonium salt according to 1:0.5-
1 mass ratio mixing.
Wherein, the initiator is that potassium peroxydisulfate, sodium hydrogensulfite and potassium chloride are matched by the mass ratio of 1:1-1.5:7-10
System.
In addition, the present invention also provides the preparation methods of the shielding diverting agent, wherein preparation method includes following step
It is rapid:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer
Concentration is to 25%~30%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, heat are added according to the proportion
Stabilizer, proppant and fluid loss additive are heated to 55-60 DEG C, carry out polymerization reaction 4.5-5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 65-70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
Wherein, the particle that the 5th step obtains, 0.1~1.0mm of partial size account for 80% or more.
One, technical indicator
The technical indicator of shielding diverting agent is as follows:
Two, experimental section:
1, shielding diverting agent water insoluble matter content is tested
A certain amount of shielding diverting agent is weighed, is sufficiently dissolved in tap water, centrifugation drying, weighing, final water-insoluble
Content is 2.75%.
Experimental data shows that the shielding diverting agent water insoluble matter content is lower, is significantly less than current other and temporarily blocks up liquid water not
Molten object residue content will not influence shielding temporarily stifled construction effect.
2, shielding diverting agent surface-active is tested
A certain amount of shielding diverting agent is weighed, is sufficiently dissolved in tap water, uniform solution is obtained, is hung with JAhyl -180
It is 40mN/M that ring type interfacial tensimeter, which measures surface tension,.
Experimental data shows that the diverting agent aqueous solution has certain surface-active, is conducive to the row of returning after temporarily stifled construction.
3, shielding diverting agent Bulking Time and expansion multiple test
The water swelling of diverting agent is as caused by its special molecular structure.Under a certain pressure may be used after diverting agent expansion
It flexible deformation occurs, is resident in leakage stratum or fracture pore, pressure difference increase, which can reduce, shakes out and output water.Diverting agent
Expansion multiple and the time be a kind of logarithmic relationship in a certain range, start than very fast, it is then gradually slow, test objective be existing
Field construction provides parameter designing foundation.
Test method: shielding diverting agent sample 1.0g~3.0g of the invention is weighed with electronic balance, sample is placed on
Range is that water (tap water or water flooding) is added to full of cylinder scale in the clean graduated cylinder of 100mL.Graduated cylinder is placed in setting temperature
In the water-bath of degree or electrically heated drying cabinet, at regular intervals, graduated cylinder is taken out, substance therein is poured into standard screen, after filtering off water,
Quality after weighing shielding diverting agent expansion.Weighing finishes, and is filtered off liquid and hydroexpanding body refunds graduated cylinder, continue constant temperature.It presses
Formula calculates expansion multiple.
P=Mi/M (1)
In formula: P- expansion multiple；
The hydroexpanding body quality that Mi- i-th weighs, g；
M- sample quality, g.
Test result
Table 1 is with three groups of fine grain shielding diverting agents and three groups of coarse grain diameter shielding diverting agents by shielding diverting agent expansion multiple
The method of experiment, is dissolved in tap water and comparing；
Table 2 is to be dissolved in the stratum salinity 100000mg/L in room temperature, 90 DEG C and 120 DEG C with three groups of fine grain shielding diverting agents
The comparison of the coefficient of expansion and three groups of coarse grain diameter shielding diverting agents expansion multiple in same temperature, salinity water flooding in water.
Carefully refer to that the particle of 0.1~1.0mm of partial size accounts for the 80% of component；Slightly refer to that the particle of 3~5mm of partial size accounts for group
80% divided.
(1) shielding diverting agent expansion test in tap water the results are shown in Table 1, Fig. 1.
Expansion multiple of 1 shielding diverting agent of table in tap water
(2) shielding diverting agent the results are shown in Table 2, Fig. 2 in salinity for the expansion test in 100000mg/L water flooding.
Table 2
Conclusion (of pressure testing): a. shielding diverting agent reduces with the increase expansion multiple of salinity.B. after shielding diverting agent meets water
Expansion is very fast, and later speed of expansion slows down；10h or so is placed, it is basic inflatable complete.C. soaking temperature increases, speed of expansion
Accelerate, expansion multiple increases.The final swelling volume of identical quality sample is close.And under the conditions of of the same race, partial size 0.1~
1.0mm accounts for 80% fine grained of component, and expansion multiple is higher than 80% coarse granule that 3~5mm of partial size accounts for component.
4, shielding diverting agent dispersion suspension test
The dispersion suspension of shielding diverting agent is an important factor for guaranteeing construction safety, by normal construction discharge capacity, to be pumped into stifled
Agent about needs 1h from well head to shaft bottom, in addition the time of preparation, the substantially all swelling of blocking agent to shaft bottom.Suspended dispersed test
Purpose seeks to guarantee that shielding diverting agent still keeps good mobility, so that blocking agent is smoothly injected leakage stratum, avoids blocking agent
Shaft bottom or blocking oil pipe are deposited to, construction accident is caused.
The sample for being 0.5mm~5mm by partial size, clear water are configured to 1%~2% suspension, are 150 with mixing speed
Turn/stirring of the blender of min when, dispersion performance is preferable, and water it is swollen after suspension increase.The sample for being 2.0mm~3.0mm by partial size
Product are configured to 1%~2% suspension, when being stirred with the blender that mixing speed is 200 turns/min, can be allowed to be uniformly dispersed.
Experiments have shown that suspending when shielding diverting agent mass concentration is less than 2% and good flowing properties, concentration flowing when being greater than 2%
Dynamic performance starts to be deteriorated, and concentration loses flowability when reaching 3%.Therefore, when site operation, the compound concentration of shielding diverting agent is not
It preferably more than 2%, otherwise will lose flowability in oil pipe, block oil pipe, construction is caused to fail.
5, the dissolution water test of shielding diverting agent
Take shielding diverting agent to be sufficiently swollen with clear water, be divided into two parts, portion be placed in 85 DEG C under the conditions of sealing test tube in, separately
Portion is put into special test tube, is placed in 120 DEG C of baking ovens, opens special test tube every the obstructed time, and observation is after high temperature is investigated
The form of grain, the muddy degree of water, observes the elasticity and intensity of diverting agent in special test tube.Test result is shown in Table 3.
The dissolution water test of 3 shielding diverting agent of table
Experiment shows that form is varied shielding diverting agent particle at a certain temperature, compares with the sample under room temperature, glue
Body intensity becomes smaller, and grain diameter reduces, and dispersibility is strong.
6, shielding diverting agent blocks pressure testing
When diverting agent goes out closure to lost-circulation zone, the rising of operation pressure is demonstrated by temporarily stifled shut-off capacity；It carries out indoors
Rock core Logistics automatic system, test result are shown in Fig. 3, and laboratory test shows: shielding diverting agent is particle blocking agent, rear pressure stifled to plugged zone
Front end is acted predominantly on, and is risen rapidly, diverting agent particle is suitble to block near wellbore zone deficit, is not easily accessible deep position；Note
The rising for entering pressure is to measure an important indicator of diverting agent performance, measures the closure pressure of diverting agent.
7, shielding diverting agent is water-fast with permeability variation performance test
(1) test method step
Survey rock core water phase permeability；Survey rock pore volume；Displacing fluid is squeezed, stifled preceding core permeability is surveyed；
Displacing fluid is squeezed, breakthrough pressure and stifled rear core permeability are surveyed.Draw curve.
(2) test result
Shielding diverting agent simulated formation situation under the conditions of 85 DEG C measures pore volume, the permeability of temporarily stifled preceding rock core, blocks up
The situation of change of pressure and permeability afterwards.Test data is shown in Table 4, Fig. 4, Fig. 5.
Pressure, permeability test data after table 4 is temporarily stifled
From table 4 and Fig. 4, Fig. 5 Dependence Results it is found that shielding diverting agent with can effectively reduce nearly well after blocking to lost-circulation zone
The permeability of band, as the increase of injected water volume can effectively improve injection pressure, it is established that the artificial shielding of higher-strength is temporarily stifled
Layer, to eliminate or reduce to formation leakage problem.
8, shielding diverting agent reversely surveys resume permeability performance test
(1) test method step
A. rock core water phase permeability is surveyed；Survey rock pore volume；
B. squeeze diverting agent to rock core, 80 DEG C constant temperature 12-15 hours；
C. displacing fluid is squeezed, stifled rear reversed core permeability is surveyed.
D. the water-fastness value of diverting agent is calculated；Draw curve.
(2) test result
Shielding diverting agent simulated formation situation under the conditions of 85 DEG C, the pore volume before measurement rock core temporarily blocks up is 30.5%,
Water phase permeability are as follows: 2985.21um2.The situation of change of pressure and permeability after measurement is temporarily stifled.Test data is shown in Table 5, Fig. 6, figure
7。
Reversed rock core restores test data after table 5 is stifled
By table 5 and Fig. 6, Fig. 7 Dependence Results it is found that shielding diverting agent is after blocking lost-circulation zone, it is reversed to remove diverting agent
Water is injected, test illustrates to release the temporarily stifled permeability that can effectively restore near wellbore zone, and injects and press with the increase of injected water volume
Power can be effectively reduced, it is established that well-flushing circulation, thus eliminate or reduce to formation leakage problem, and after voluntarily releasing blocking,
Shorten drainage period, effective protection oil reservoir returns to normal production.
9, shielding diverting agent compressive resistance is tested
A certain amount of shielding diverting agent is equably laid on to the crushing chamber of press machine, applies pressure, at various pressures,
Its percentage of damage is measured, judges that its compressive resistance, experimental result are shown in Table 6 according to broken kernel size.
6 shielding diverting agent compressive resistance data of table
| Pressure (MPa) | 5 | 8 | 11 | 14 | 17 | 20 |
| Percentage of damage (%) | 0 | 0.1 | 0.4 | 1.2 | 4.8 | 7.5 |
Experimental data shows that shielding diverting agent percentage of damage at 20MPa is still very low, can satisfy the pressure resistance of temporarily stifled process
It is required that.6 experimental data of table shows that shielding diverting agent is up to 99.7% to core sealing ratiod, and breakthrough pressure gradient is up to
1.08MPa/cm can satisfy stifled borehole requirement.
10, influence (be shown in Table 7 and Fig. 8) of the partial size of shielding diverting agent elastic granule to elasticity modulus
The partial size of 7 elastic granule of table and the relationship of elasticity modulus
11, the temperature tolerance of shielding diverting agent elastic granule
The temperature tolerance of 8 elastic granule of table
| Temperature (DEG C) | Elasticity modulus (Pa) |
| 20 | 3165 |
| 40 | 2063 |
| 60 | 1540 |
| 70 | 1372 |
| 80 | 1813 |
| 85 | 1766 |
Three, usage and dosage
1, according to oily (gas) well data, flushing well agent usage amount V is first calculated
V=π D2 (H+50)
V-- diverting agent solution usage, m3 in formula
D-- production casing internal diameter, m
The artificial bottom of a well H-- is to the height penetrated at the top of layers apart, m
2, the agent is poured into pond, is pumped into pump truck from oil pipe, followed by being pumped into well killing fluid.
Four, field application situation
1, the application in gram gas field is strangled in Turkmenistan Saudi Arabia
The gas field is gone into operation at the beginning of the end of the sixties 70, and reservoir pressure coefficient 0.15-0.3 before repairing belongs to subnormal pressure gas well, nothing
Method establishes circulation.A well has been repaired with six months by well workover team, Ukraine, but serious due to missing, and takes a variety of induced flow and arranges
It applies and is showed no effect, fail to go into operation so far.Middle side has only been used using this technology just reaches reparation purpose for 30 days, and average product
Restore to have reached subnormal pressure well 85% or more and repair advanced international standard (not taking well stimulation).This technology is answered
With being that the important foundation that succeeds of gram gas field well workover is strangled by Saudi Arabia, up to the present 86 mouthfuls of well workover altogether, success rate 100%.(in detail
9) data are shown in Table
Table 9
2, enter field application in Shengli Oil Field Zhongyuan Oil Field, work well.
Construction well example: triumph oil development QD5-2-X18 well
(1), well-flushing condition of construction is shielded:
Because of oily thick, wax deposition implementing plan well-flushing, layer position is produced: 1 on two lower 3-4 tri- on September 19th, 2016；Well section:
1653.6-1713.9.6m, 26.9m/7 layers of artificial bottom of a well 1866m, pump are deep: 1206.93m, screen casing depth: 1217.73m, hydrodynamic
Face is 808m, is temporarily blocked up before well-flushing using shielding, when flushing fluid uses 14m3 (oil jacket annulus volume 13.4m3), has started pressure, pump
Pressure is by 0 ↗ 8MPa, and cementing truck discharge capacity third gear (about 16m3/h), oil pipe returns liquid, it is established that circulation continues to replace into flushing fluid 11m3, washes
Well pressure is 8MPa, adds up shared flushing fluid 25m3.Effect see the table below 10, Figure 10 after well-flushing opens pumping.
10 QD5-2-X18 well well washing effect statistical form of table
In order to clarify the technical characteristics of the invention, being illustrated below by specific embodiment to this programme.
Embodiment 1
The present invention is a kind of shielding diverting agent, and shielding diverting agent is made by the raw material of following mass fraction: high molecular polymerization
Object 30%, heat stabilizer 20%, proppant 30%, fluid loss additive 10% and initiator 10%.
Wherein, high molecular polymer is the mass parts ratio of hydrolyzed polyacrylamide and polyacrylamide sylvite according to 1:1
It mixes.
Wherein, heat stabilizer is the mixture of -2 methyl propane sulfonic acid of 2- acrylamido, sodium thiosulfate and formaldehyde, they
Mass parts ratio be 1:0.5:0.5.
Wherein, proppant is formulated by 55% bentonite, 20% calcium carbonate and 25% calcium oxide.
Wherein, fluid loss additive is by low-viscosity sodium carboxymethyl cellulose salt and hydrolyzed polyacrylonitrile ammonium salt according to the quality of 1:1
Than mixing.
Wherein, initiator is that potassium peroxydisulfate, sodium hydrogensulfite and potassium chloride are prepared by the mass ratio of 1:1:10.
Preparation method the following steps are included:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer
Concentration is to 25%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, heat are added according to the proportion
Stabilizer, proppant and fluid loss additive are heated to 60 DEG C, carry out polymerization reaction 5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
Wherein, the particle that the 5th step obtains, 0.1~1.0mm of partial size account for 85%.
Embodiment 2
The present invention is a kind of shielding diverting agent, and shielding diverting agent is made by the raw material of following mass fraction: high molecular polymerization
Object 40%, heat stabilizer 12%, proppant 20%, fluid loss additive 15% and initiator 13%.
Wherein, high molecular polymer is the mass fraction of hydrolyzed polyacrylamide and polyacrylamide sylvite according to 1:0.5
Than mixing.
Wherein, heat stabilizer is the mixture of -2 methyl propane sulfonic acid of 2- acrylamido, sodium thiosulfate and formaldehyde, they
Mass parts ratio be 1:0.5:1.
Wherein, proppant is formulated by 60% bentonite, 20% calcium carbonate and 20% calcium oxide.
Wherein, fluid loss additive is by low-viscosity sodium carboxymethyl cellulose salt and hydrolyzed polyacrylonitrile ammonium salt according to the matter of 1:0.5
Amount is than mixing.
Wherein, initiator is that potassium peroxydisulfate, sodium hydrogensulfite and potassium chloride are prepared by the mass ratio of 1:1.5:10.
In addition, the present invention also provides the preparation methods of the shielding diverting agent, wherein preparation method includes following step
It is rapid:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer
Concentration is to 30%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, heat are added according to the proportion
Stabilizer, proppant and fluid loss additive are heated to 60 DEG C, carry out polymerization reaction 5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
Wherein, the particle that the 5th step obtains, 0.1~1.0mm of partial size account for 90%.
Embodiment 3
The present invention is a kind of shielding diverting agent, and the shielding diverting agent is made by the raw material of following mass fraction: macromolecule
Polymer 49%, heat stabilizer 10%, proppant 15%, fluid loss additive 15% and initiator 11%.
Wherein, high molecular polymer is the mass parts ratio of hydrolyzed polyacrylamide and polyacrylamide sylvite according to 1:1
It mixes.
Wherein, the heat stabilizer is the mixture of -2 methyl propane sulfonic acid of 2- acrylamido, sodium thiosulfate and formaldehyde,
Their mass parts ratio is 1:0.5:1.
Wherein, the proppant is formulated by 67% bentonite, 16.5% calcium carbonate and 16.5% calcium oxide.
Wherein, the fluid loss additive is by low-viscosity sodium carboxymethyl cellulose salt and hydrolyzed polyacrylonitrile ammonium salt according to 1:1's
Mass ratio mixing.
Wherein, the initiator is that potassium peroxydisulfate, sodium hydrogensulfite and potassium chloride are prepared by the mass ratio of 1:1:10.
In addition, the present invention also provides the preparation methods of the shielding diverting agent, wherein preparation method includes following step
It is rapid:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer
Concentration is to 28%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, heat are added according to the proportion
Stabilizer, proppant and fluid loss additive are heated to 60 DEG C, carry out polymerization reaction 5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
Wherein, the particle that the 5th step obtains, 0.1~1.0mm of partial size account for 95%.
Technical characteristic of the present invention without description can realize that details are not described herein by or using the prior art, certainly,
The above description is not a limitation of the present invention, and the present invention is also not limited to the example above, the ordinary skill of the art
The variations, modifications, additions or substitutions that personnel are made within the essential scope of the present invention also should belong to protection model of the invention
It encloses.
Claims (5)
1. a kind of shielding diverting agent, which is characterized in that the shielding diverting agent is made by the raw material of following mass fraction: macromolecule
Polymer 30%~50%, heat stabilizer 10%~20%, proppant 10%~40%, fluid loss additive 10%~20% and initiator 10%~
20%；
High molecular polymer be hydrolyzed polyacrylamide and polyacrylamide sylvite according to the mass parts ratio mixing of 1:0.5-1 and
At；
The heat stabilizer is the mixture of -2 methyl propane sulfonic acid of 2- acrylamido, sodium thiosulfate and formaldehyde, their matter
Amount portion rate is 1:0.3-0.5:0.5-1；
The proppant is formulated by 55-70% bentonite, 15-20% calcium carbonate and 10-30% calcium oxide；
The fluid loss additive is by low-viscosity sodium carboxymethyl cellulose salt and hydrolyzed polyacrylonitrile ammonium salt according to the mass ratio of 1:0.5-1
Mixing；
The preparation method of the temporary resist the following steps are included:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer concentration
To 25%~30%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, thermostabilization are added according to the proportion
Agent, proppant and fluid loss additive are heated to 55-60 DEG C, carry out polymerization reaction 4.5-5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 65-70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
2. shielding diverting agent according to claim 1, which is characterized in that the initiator is potassium peroxydisulfate, bisulfite
Sodium and potassium chloride are prepared by the mass ratio of 1:1-1.5:7-10.
3. shielding diverting agent according to claim 1, which is characterized in that the particle that the 5th step obtains, partial size 0.1~
1.0mm accounts for 80% or more.
4. a kind of preparation method of shielding diverting agent according to claim 1-3, which is characterized in that the preparation
Method the following steps are included:
High molecular polymer is adjusted pH value 9-10 with sodium carbonate in material-compound tank by the first step, adjusts high molecular polymer concentration
To 25%~30%；
Second step, by the first step, treated that high molecular polymer is delivered to polymeric kettle, and initiator, thermostabilization are added according to the proportion
Agent, proppant and fluid loss additive are heated to 55-60 DEG C, carry out polymerization reaction 4.5-5h, obtain brown colorful rubber sheet；
Third step, the brown colorful rubber sheet for obtaining second step are granulated through pelletizer；
4th step, the granulation for obtaining third step are sent to drying box, are heated to drying at 65-70 DEG C；
5th step crushes particle of the 4th step after dry, obtains particle to get shielding diverting agent is arrived.
5. a kind of application method of shielding diverting agent according to claim 1-3, which is characterized in that shielding is temporary
The solution use that clear water is configured to 1%~2% is added in blocking agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170063.5A CN106947449B (en) | 2017-03-21 | 2017-03-21 | A kind of shielding diverting agent and preparation method thereof, application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170063.5A CN106947449B (en) | 2017-03-21 | 2017-03-21 | A kind of shielding diverting agent and preparation method thereof, application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106947449A CN106947449A (en) | 2017-07-14 |
| CN106947449B true CN106947449B (en) | 2019-10-08 |
Family
ID=59472859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710170063.5A Expired - Fee Related CN106947449B (en) | 2017-03-21 | 2017-03-21 | A kind of shielding diverting agent and preparation method thereof, application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106947449B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474807A (en) * | 2017-08-25 | 2017-12-15 | 中国石油化工股份有限公司 | Fracture-pore reservoir runner regulator and preparation method thereof |
| CN109294539B (en) * | 2018-09-25 | 2021-03-09 | 中国石油天然气股份有限公司 | Fire flooding well environment-friendly channeling sealing agent and preparation method and application thereof |
| CN109294541B (en) * | 2018-09-25 | 2021-03-09 | 中国石油天然气股份有限公司 | Fire flooding well self-degradation temporary plugging agent and preparation method and application thereof |
| CN115584252B (en) * | 2022-12-09 | 2023-04-07 | 东营盛世石油科技有限责任公司 | Temporary plugging agent for fracturing operation well repair and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603966A (en) * | 2012-03-12 | 2012-07-25 | 里群 | Cross-linked polymer microsphere for oil displacement of oilfield and preparation method for cross-linked polymer microsphere |
| CN104449613A (en) * | 2014-10-31 | 2015-03-25 | 中国石油化工集团公司 | Water-absorbent resin temporary plugging agent and preparation method thereof |
| CN104479664A (en) * | 2014-11-19 | 2015-04-01 | 长江大学 | Organic granular plugging agent for CO2-driving high-temperature low-permeation water-sensitive oil deposit and preparation method thereof |
| CN104479653A (en) * | 2014-12-11 | 2015-04-01 | 西安石油大学 | Retarding-swelling salt-tolerant high-viscoelasticity particles with interpenetrating network structure and preparation method thereof |
| CN104531115A (en) * | 2014-12-30 | 2015-04-22 | 中国石油天然气股份有限公司 | Temporary plugging agent for horizontal well water control, and preparation method and application thereof |
| CN106010491A (en) * | 2016-05-16 | 2016-10-12 | 中国石油化工股份有限公司 | Pre-crosslinking swellable profile control agent, preparation method and application |
| CN106047318A (en) * | 2016-06-23 | 2016-10-26 | 中石化石油工程技术服务有限公司 | Water swelling and plugging material and preparation method thereof |
-
2017
- 2017-03-21 CN CN201710170063.5A patent/CN106947449B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603966A (en) * | 2012-03-12 | 2012-07-25 | 里群 | Cross-linked polymer microsphere for oil displacement of oilfield and preparation method for cross-linked polymer microsphere |
| CN104449613A (en) * | 2014-10-31 | 2015-03-25 | 中国石油化工集团公司 | Water-absorbent resin temporary plugging agent and preparation method thereof |
| CN104479664A (en) * | 2014-11-19 | 2015-04-01 | 长江大学 | Organic granular plugging agent for CO2-driving high-temperature low-permeation water-sensitive oil deposit and preparation method thereof |
| CN104479653A (en) * | 2014-12-11 | 2015-04-01 | 西安石油大学 | Retarding-swelling salt-tolerant high-viscoelasticity particles with interpenetrating network structure and preparation method thereof |
| CN104531115A (en) * | 2014-12-30 | 2015-04-22 | 中国石油天然气股份有限公司 | Temporary plugging agent for horizontal well water control, and preparation method and application thereof |
| CN106010491A (en) * | 2016-05-16 | 2016-10-12 | 中国石油化工股份有限公司 | Pre-crosslinking swellable profile control agent, preparation method and application |
| CN106047318A (en) * | 2016-06-23 | 2016-10-26 | 中石化石油工程技术服务有限公司 | Water swelling and plugging material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 互穿聚合物网络凝胶调剖堵水剂的研究进展;李翠霞，等;《应用化工》;20141020;第43卷(第10期);第1895-1898页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106947449A (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106947449B (en) | A kind of shielding diverting agent and preparation method thereof, application method | |
| CN105441043B (en) | A kind of temporarily stifled microballoon and preparation method thereof | |
| CN109294541B (en) | Fire flooding well self-degradation temporary plugging agent and preparation method and application thereof | |
| CN104610950B (en) | A kind of suspended gel particle plugging agent and its application | |
| CN109294539B (en) | Fire flooding well environment-friendly channeling sealing agent and preparation method and application thereof | |
| CN106833572B (en) | Solidified water temporary plugging well killing working fluid and preparation and liquid discharge methods thereof | |
| CN104629699B (en) | A kind of heat-resistant salt-resistant frozen glue of low cross-linking agent consumption | |
| CN105062444A (en) | High temperature swellable granule plugging agent and preparation method thereof | |
| CN106398660A (en) | Pressure-bearing plugging agent for drilling fluid | |
| CN104341548A (en) | Micron-grade copolymer microspheres and preparation method thereof | |
| CN106958438B (en) | A kind of method for removing blockage of polymer flooding blocking well | |
| CN104804719B (en) | A kind of method using fracturing outlet liquid preparing fracturing fluid | |
| CN114106810A (en) | Nano silicon dioxide, nano composite slickwater fracturing fluid, preparation method and application | |
| CN107629775B (en) | Oil-containing sludge profile control agent and preparation method thereof | |
| CN104045179B (en) | A kind of oil-gas field fracturing that processes returns method and the device thereof of discharge opeing | |
| CN110317590A (en) | It is suitble to the transfer drive system and preparation method thereof of high contents of calcium and magnesium oil reservoir | |
| CN106753298B (en) | Cationic dispersion gel composite emulsification type profile control water plugging agent prepared by using oily sludge as base material | |
| CN102899014B (en) | Fiber steering acid | |
| CN109652031B (en) | Strong wall drilling fluid system and preparation method thereof | |
| CN105482794A (en) | Gel particles and preparation method thereof | |
| CN116200183A (en) | High-efficiency variable-viscosity fracturing fluid for deep coal bed gas development and integrated construction method | |
| CN113444505B (en) | Self-adaptive plugging isolation liquid system and preparation method thereof | |
| RU2410406C1 (en) | Oil recovery enhancing composition and preparation method thereof | |
| CN114920877A (en) | Temporary plugging agent for oilfield fracturing and preparation method thereof | |
| CN112210353B (en) | High-filtration high-acid-solubility plugging agent for reservoir plugging 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191008 |