CN104099074B - Volume fracturing reconstruction crack plugging agent and water plugging construction method - Google Patents
Volume fracturing reconstruction crack plugging agent and water plugging construction method Download PDFInfo
- Publication number
- CN104099074B CN104099074B CN201410254211.8A CN201410254211A CN104099074B CN 104099074 B CN104099074 B CN 104099074B CN 201410254211 A CN201410254211 A CN 201410254211A CN 104099074 B CN104099074 B CN 104099074B
- Authority
- CN
- China
- Prior art keywords
- water
- agent
- water shutoff
- shutoff agent
- volume
- 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.)
- Active
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
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
Abstract
The invention discloses a volume fracturing reconstruction crack plugging agent and a water plugging construction method. The water plugging agent comprises the following components by weight: 40-60% of liquid rubber, 20-30% of a solvent, 5-15% of nano-particles, 5-15% of expandable resin particles, 1-3% of a crosslinking agent, 0.1-1% of an initiator and 0.01-0.2% of fiber. The construction method includes: 1) preparing the plugging agent; 2) injecting the plugging agent into the stratum at a displacement of 100-300L/min; 3) injecting a spacer fluid slug and a gel breaker into the stratum; and 4) conducting clear water displacement, and enhancing the construction displacement to 500-700L/min, and then closing the wellhead for 24h. The construction method is convenient and fast, reduces the shortcomings of large plugging agent consumption and plugging agent shrinking aging failure caused by network fracture development after volume fracturing reconstruction, enlarges the application temperature range of a water plugging reservoir, prolongs the water plugging validity period of the production well, decreases the water content of the production well at the later stage of volume fracturing, and increases the recovery rate of the reservoir.
Description
Technical field
The invention belongs to technical field of petroleum extraction, it is related to a kind of volume fracturing transformation crack water shutoff agent, further relates to this and block up
Water preparation transforms the construction method in the water blockoff of crack in volume fracturing, is particularly suited for the well workover in fracturing reform later stage in oil exploitation
Operation.
Background technology
Volume fracturing is to implement transformation by fracturing to reservoir, while forming one or more of major fracture,
Constantly expansion and brittle rock produce shearing slip to make intrinsic fracture, realize the communication to intrinsic fracture, rock bedding, Yi Ji
The lateral pressure of major fracture forms secondary fracture, and continues branch's formation secondary crack on secondary fracture, by that analogy,
Form the intrinsic fracture fracture network interlaced with man-made fracture.Thus smashing the Effective Reservoirs that can carry out seepage flow, real
The modernization overlay of existing length three-dimensional, increases seepage area and flow conductivity, improves initil output and ultimate recovery.
At present, volume fracturing has become low permeability oil field routine straight well and a kind of emphasis of horizontal well storey increase design operation pushes away
Wide pattern.Because low permeability oil field has been carried out waterflooding extraction, it is subject in water filling through the conventional straight well that volume fracturing produces network fracture
Aqueous after effect easily steeply rise, or even " water logging ", after after horizontal well volume fracturing, a certain section of water filling is imitated, injection water can prolong net
Network crack rapidly enters horizontal segment, so that oil production is fallen sharply, and entirety is aqueous to be risen or " water logging ".Producing well transforms ratio through volume fracturing
Conventional fracturing reform is improved initil output advantage, but there is higher " water logging " risk.
Patent documentation CN 102102012A（Publication date is on June 23rd, 2011）Disclose a kind of horizontal well selective blocking
Water preparation and preparation method thereof.In described water shutoff agent, each ingredients weight parts are：6.50～7.50 parts of polymer monomer, in the middle of table activity
4.50～5.75 parts of body, 0.85～1.00 part of regulator, 85.75～88.15 parts of water.The preparation method of described water shutoff agent includes：
Table reactive intermediate is added to the water, adds polymer monomer, be stirred until homogeneous；Treat table reactive intermediate and polymer monomer
Add regulator after reaction, be stirred for reacting；Product is dried, is ground into granule, screening obtains horizontal well selectivity
Water shutoff agent granule.The beneficial effect of described water shutoff agent is：There is stronger oil, water selective, synthetically produced convenience, chemical property
Stable, strong adaptability, construction technology is simple；At the same time it can also improve the sweep efficiency of High water cut old filed horizontal well development, expand
Big swept volume, improves oil recovery.
The subject matter that the method using polymer monomer water blockoff with above-mentioned patent documentation as representative exists is summarised as：1、
Because volume fracturing produces, the more conventional space of network fracture is big, and after especially horizontal well produces water, shaft bottom discharge pressure is high, polymer list
The aggregated rear water shutoff agent intensity of body is less, leans on water shutoff agent adhesion to adsorb, adhesion after soaking through stratum water in network fracture
Reduce, easily stifled incessantly network fracture EXIT POINT.2nd, the aggregated rear water shutoff agent meeting polymerization shrinkage of polymer monomer, produces between crack
Gap, reduces water plugging effect, degradable inefficacy in the long-time hot environment of water shutoff agent simultaneously, shortens water blockoff effective time.3rd, gather
Monomer adduct and metal crosslinking agent all there are certain toxicity, are unfavorable for site operation and working fluid environmental protection requirement.4th, gather
The aggregated rear water shutoff agent of monomer adduct has temperature range and limits（The highest temperature and lowest temperature）.
Content of the invention
The present invention is directed to the defect that above-mentioned prior art exists, there is provided a kind of volume fracturing transformation crack water shutoff agent and
This water shutoff agent is applied to realize the construction method that volume fracturing transforms crack water blockoff.Transform network fracture for volume fracturing, adopt
Water shutoff agent and construction method that this method provides, need not consider reservoir temperature, formation water salinity, network fracture space size limit
System, once can seal network fracture EXIT POINT, permanently effective, convenient and quick construction, safety and environmental protection completely, have certain water blockoff
Selectivity, can meet the improved water blockoff requirement of producing well volume fracturing.
The present invention adopts the technical scheme that：
A kind of volume fracturing transformation crack water shutoff agent, including following component, each component consisting of by weight percentage：Liquid
Body rubber 40 ~ 60%, solvent 20 ~ 30%, nano-particle 5 ~ 15%, swollen resin granule 5 ~ 15%, cross-linking agent 1 ~ 3%, initiator 0.1 ~
1% and fiber 0.01 ~ 0.2%.
Preferably, described liquid rubber be CTPB liquid rubber, terminal hydroxyl polybutadiene liquid rubber, poly-
Any one in pentadiene liquid rubber.
Preferably, described solvent be DMF, N,N-dimethylacetamide, arbitrary in dimethyl sulfoxide
Kind.
Preferably, described nano-particle is nano-calcium carbonate.
Preferably, described swollen resin granule is polyvinyl alcohol swollen resin granule, the particle size range of this granule is 300～
600 mesh.
Preferably, described cross-linking agent is iso-cyanuric acid triallyl ester.
Preferably, described initiator be peroxysuccinic acid, any one in peroxide of glutaric acid.
Preferably, described fiber is modified polyvinyl alcohol fabric.
Water-blocking construction method is carried out using above-mentioned volume fracturing transformation crack water shutoff agent, comprises the steps, each step institute
State percentage ratio to be all weight percentage：
1）With fracturing blender truck, 40 ~ 60% liquid rubbers and 20 ~ 30% solvents are sucked in mulling pond, stir emery wheel with fracturing blender truck and add
5 ~ 15% nano-particle and 5 ~ 15% swollen resin granules, then add 1 ~ 3% cross-linking agent, the people into mulling pond with fracturing blender truck proportioning pump
Work adds 0.1 ~ 1% initiator and 0.01 ~ 0.2% fiber, and material mix homogeneously described in this step obtains water shutoff agent；
2）Using fracturing blender truck by step 1）The water shutoff agent of preparation is pumped to cementing truck, is arranged with 100 ~ 300L/min through cementing truck
Water shutoff agent is injected stratum by amount；
3）Inject spacer slug again in stratum, the injection rate of described spacer slug be the total consumption of water shutoff agent 50 ~
80%；
4）5 ~ 15m is injected again in stratum3Gel breaker；
5）Last injected clear water is as displacement fluid, and operational discharge capacity is improved to 500 ~ 700L/min, and construction is closed after terminating
Close well head 24 hours, the injected slurry volume of described displacement fluid is that pit shaft oil pipe internal volume adds proppant with the transformation of early stage volume fracturing
The volume summation of 2 times of quantity.
Preferably, described spacer slug is grouped into by following groups, and each weight percentages of components is：Clay stabilizer 0.5 ~
2%th, cleanup additive 0.5 ~ 2%, ammonium chloride 0.5 ~ 2%, hydroxypropyl guanidine that glue 0.3 ~ 0.5%, organic borate cross-linker 0.2 ~ 0.5% and water
93.0-98.0%.
Preferably, described clay stabilizer is G511-NWJ clay stabilizer；Cleanup additive is G517-XZ cleanup additive；Organic
Borate crosslinker is G501-YJ organic borate cross-linker；Wherein, G511-NWJ clay stabilizer, G517-XZ cleanup additive, G501-YJ have
Machine borate crosslinker is drilling engineering and technological research institute of Chuan Qing drilling project company limited independent research product.
Preferably, described gel breaker is 5 ~ 10% hydrogen peroxide that mass fraction is.
Compared with prior art, the invention has the beneficial effects as follows：
1st, the volume fracturing transformation crack water-blocking construction method that the present invention adopts, reduces water shutoff agent scene and joins residue after liquid
Environmental pollution, convenient and quick construction, reduces network fracture space size simultaneously and water shutoff agent consumption is required to limit, have certain
Water blockoff selectivity, producing well volume fracturing improved water blockoff demand can be met.
2nd, the present invention selects liquid rubber to transform the effective ingredient of crack water shutoff agent as volume fracturing, can make water shutoff agent
With expanded range, meet 20 DEG C ~ 150 DEG C of reservoir, the height of formation water salinity does not affect water shutoff agent performance, under reservoir conditions
Plugging strength is maximum, and water blockoff selectivity is high.
3rd, also contain nano-particle and swollen resin granule in the water shutoff agent of volume fracturing transformation crack of the present invention, can promote
Entering water blockoff agent prescription bulk strength increases, and shut-off capacity reaches the most by force, does not affect formula entirety in reservoir network fracture simultaneously
Expansion character.
4th, cross-linking agent and initiator, water shutoff agent intensity are also contained in the water shutoff agent of heretofore described volume fracturing transformation crack
Higher, expansion character is optimal, adjusts crack closure by expanding, and reduces the water blockoff because adhesion reduces and lost efficacy, extends water shutoff agent
Action time.
5th, in the water-blocking construction method of volume fracturing transformation crack, using injecting a certain amount of spacer slug, reduce note
Enter liquid flowing " fingering " phenomenon, water shutoff agent is uniformly pushed into design requirement destination.
6th, using a certain amount of clear water as displacement fluid in the present invention, and operational discharge capacity is improved to 500 ~ 700L/min, can
Make water shutoff agent quickly reach the far-end of network fracture, EXIT POINT is once blocked completely, reduce water shutoff agent consumption, recovering should
Well or this Reservoir Section production yields.
Below with reference to embodiment, the present invention is described in further details.
Specific embodiment
In Ordos Basin low-permeability oil Tanaka, 2013 secondary more than 800 wells using volume fracturing transformation well, secondary
Have in oil recovery and the aqueous rapid increase problem of partial volume fracturing reform well, conventional shutoff method DeGrain have occurred.
Developing for network fracture after volume fracturing transformation leads to water shutoff agent consumption big and water shutoff agent shrink ageing failure
Shortcoming, the present invention have developed a kind of liquid rubber water shutoff agent product, adjusts crack closure by expanding, reduces and reduce because of adhesion
And water blockoff lost efficacy, extend water shutoff agent action time.On this basis, the present invention is using the water shutoff agent newly developed, there is provided a kind of
Volume fracturing transformation crack water-blocking construction method, by displacement control and multistage injection mode, after liquid is joined at minimizing water shutoff agent scene
Residue environmental pollution, convenient and quick construction, reduces network fracture space size simultaneously and water shutoff agent consumption is required to limit, expand
Big water shutoff agent uses temperature range, has certain water blockoff selectivity, can achieve once closure volume fracturing transformation net completely
Network crack EXIT POINT, can meet producing well volume fracturing improved water blockoff demand.
After the volume fracturing transformation crack water-blocking construction method that the present invention provides can efficiently solve volume fracturing transformation
Network fracture develop lead to water shutoff agent consumption big and water shutoff agent shrink ageing failure problem, expand the temperature of water blockoff reservoir applications
Degree scope, extends the effect duration of producing well water blockoff, reduces the moisture content in producing well volume fracturing later stage, can improve adopting of reservoir
Yield.The application of this invention has broad prospects, and the application of this invention will promote volume fracturing technology further in hyposmosis
The development in oil field, the final recovery ratio improving reservoir in low-permeability oilfields.
Embodiment 1
This example provides a kind of volume fracturing transformation crack water shutoff agent, preferably, each component is by weight percentage
Consist of：Liquid rubber 40%, solvent 26.8%, nano-particle 15%, polyvinyl alcohol（PVA）Swollen resin granule 15%, cross-linking agent
2%th, initiator 1% and modified polyvinyl alcohol fabric 0.2%.
Wherein, described liquid rubber is the mixture containing two kinds of components, and by weight percentage, two kinds of groups are divided into 40%
CTPB liquid rubber and 60% terminal hydroxyl polybutadiene liquid rubber.Main as water shutoff agent using liquid rubber
The range of water shutoff agent can be expanded, meet the construction requirement of different temperatures reservoir by one of composition, and formation water salinity
Height do not affect water shutoff agent performance, under reservoir conditions, plugging strength is larger, and water blockoff selectivity is high.
Wherein, described solvent is mixed solvent, and mixed solvent is N,N-dimethylacetamide and the mixing of dimethyl sulfoxide
Thing.Wherein, every kind of component is 50% by weight percentage.
Wherein, described nano-particle is nano-calcium carbonate.The particle diameter of described PVA swollen resin granule is 600 mesh.Nanometer
Calcium Carbonate and the addition of PVA swollen resin granule, can increase water blockoff agent prescription bulk strength, improve the shut-off capacity of water shutoff agent,
Do not affect the overall expansion character in reservoir network fracture of formula simultaneously.
Wherein, described cross-linking agent is iso-cyanuric acid triallyl ester.The peroxide that described initiator is 7% for mass fraction
Change succinic acid aqueous solution.Cross-linking agent and the use of initiator, can make the intensity of water shutoff agent higher, and expansion character is preferable, by swollen
The closure of swollen regulation crack, reduces the water blockoff because adhesion reduces and lost efficacy, and extends water shutoff agent action time.
Further, plug water construction is carried out using above-mentioned volume fracturing transformation crack water shutoff agent, construction method includes as follows
Step, percentage ratio described in each step is all weight percentage：
1）With fracturing blender truck, 40% liquid rubber and 26.8% solvent are sucked in mulling pond, stir emery wheel with fracturing blender truck and add 15%
Nano-calcium carbonate and 15%PVA swollen resin granule, then add 2% cross-linking agent with fracturing blender truck proportioning pump, manually add into mulling pond
Enter 1% initiator and 0.2% modified polyvinyl alcohol fabric, material mix homogeneously described in this step obtains water shutoff agent；
2）Using fracturing blender truck by step 1）The water shutoff agent of preparation is pumped to cementing truck, will with 100L/min discharge capacity through cementing truck
Water shutoff agent injects stratum；
3）30m is injected again in stratum3Spacer slug（The 50% of the total consumption of water shutoff agent）.Described spacer slug is with weight
Amount percentages are 0.5% clay stabilizer, 0.5% cleanup additive, 1% ammonium chloride, 0.3% hydroxypropyl guanidine that glue, and 0.3% organic boron is handed over
Connection agent and the mixture of 97.4% water composition.In this step, clay stabilizer is G511-NWJ clay stabilizer；Cleanup additive is
G517-XZ cleanup additive；Organic borate cross-linker is G501-YJ organic borate cross-linker；Wherein, G511-NWJ clay stabilizer, G517-
XZ cleanup additive, G501-YJ organic borate cross-linker are drilling engineering and technological research institute of Chuan Qing drilling project company limited and independently grind
Send out product.
4）10m is injected again in stratum3Gel breaker；Described gel breaker is 6% hydrogen peroxide and 94% water by weight percentage
Mixture.
5）Finally inject 112m3Clear water is as displacement fluid（The injected slurry volume of described displacement fluid be pit shaft oil pipe internal volume with
The transformation of early stage volume fracturing adds the summation of the volume of 2 times of proppant quantity, because every bite volume fracturing well adds sand transformation
Scale is different, and fracture spaces are also different accordingly, so will be designed according to specific well situation, to set early stage volume fracturing
Sand feeding amount 50 side, well depth 3000m calculates）, and operational discharge capacity is improved to 700L/min, it is little that construction closes well head 24 after terminating
When, achievable volume fracturing transformation network fracture EXIT POINT once blocks completely.
Embodiment 2
This example provides a kind of volume fracturing transformation crack water shutoff agent, preferably, each component is by weight percentage
Consist of：Liquid rubber 60%, solvent 20%, nano-particle 8%, polyvinyl alcohol（PVA）Swollen resin granule 8%, cross-linking agent 3%, draw
Send out agent 0.9% and modified polyvinyl alcohol fabric 0.1%.
Wherein, described liquid rubber is the mixture containing two kinds of components, and by weight percentage, two kinds of groups are divided into 20%
CTPB liquid rubber and 80% polyprene liquid rubber.Using liquid rubber as the main component of water shutoff agent it
One, the range of water shutoff agent can be expanded, meet the construction requirement of different temperatures reservoir, and the height of formation water salinity
Do not affect water shutoff agent performance, under reservoir conditions, plugging strength is larger, water blockoff selectivity is high.
Wherein, described solvent be mixed solvent, by weight percentage, mixed solvent consist of 30%N, N- dimethyl
Methanamide and 70%N, N- dimethyl acetylamide.
Wherein, described nano-particle is nano-calcium carbonate.The particle diameter of described PVA swollen resin granule is 500 mesh.Nanometer
Calcium Carbonate and the addition of PVA swollen resin granule, can increase water blockoff agent prescription bulk strength, improve the shut-off capacity of water shutoff agent,
Do not affect the overall expansion character in reservoir network fracture of formula simultaneously.
Wherein, described cross-linking agent is iso-cyanuric acid triallyl ester.The peroxide that described initiator is 7% for mass fraction
Change 1,3-propanedicarboxylic acid aqueous solution.Cross-linking agent and the use of initiator, can make the intensity of water shutoff agent higher, and expansion character is preferable, by swollen
The closure of swollen regulation crack, reduces the water blockoff because adhesion reduces and lost efficacy, and extends water shutoff agent action time.
Further, plug water construction is carried out using above-mentioned volume fracturing transformation crack water shutoff agent, construction method includes as follows
Step, percentage ratio described in each step is all weight percentage：
1）With fracturing blender truck, 60% liquid rubber and 20% solvent are sucked in mulling pond, stir emery wheel with fracturing blender truck and add 8% nanometer
Calcium Carbonate and 8%PVA swollen resin granule, then add 3% cross-linking agent with fracturing blender truck proportioning pump, the artificial addition 0.9% into mulling pond
Initiator and 0.1% modified polyvinyl alcohol fabric, material mix homogeneously described in this step obtains water shutoff agent；
2）Using fracturing blender truck by step 1）The water shutoff agent of preparation is pumped to cementing truck, will with 300L/min discharge capacity through cementing truck
Water shutoff agent injects stratum；
3）40m is injected again in stratum3Spacer slug（The 80% of the total consumption of water shutoff agent）.Described spacer slug is with weight
Amount percentages are 0.8% clay stabilizer, 0.8% cleanup additive, 2% ammonium chloride, 0.5% hydroxypropyl guanidine that glue, and 0.5% organic boron is handed over
Connection agent and the mixture of 95.4% water composition.In this step, clay stabilizer is G511-NWJ clay stabilizer；Cleanup additive is
G517-XZ cleanup additive；Organic borate cross-linker is G501-YJ organic borate cross-linker；Wherein, G511-NWJ clay stabilizer, G517-
XZ cleanup additive, G501-YJ organic borate cross-linker are drilling engineering and technological research institute of Chuan Qing drilling project company limited and independently grind
Send out product.
4）7m is injected again in stratum3Gel breaker；Described gel breaker is 8% hydrogen peroxide and 92% water by weight percentage
Mixture.
5）Finally inject 166m3Clear water is as displacement fluid（The injected slurry volume of described displacement fluid be pit shaft oil pipe internal volume with
The transformation of early stage volume fracturing adds the summation of the volume of 2 times of proppant quantity, because every bite volume fracturing well adds sand transformation
Scale is different, and fracture spaces are also different accordingly, so will be designed according to specific well situation, to set early stage volume fracturing
Sand feeding amount 80 side, well depth 2000m calculates）, and operational discharge capacity is improved to 500L/min, it is little that construction closes well head 24 after terminating
When, achievable volume fracturing transformation network fracture EXIT POINT once blocks completely.
Embodiment 3
This example provides a kind of volume fracturing transformation crack water shutoff agent, preferably, each component is by weight percentage
Consist of：Liquid rubber 50%, solvent 25%, nano-particle 11%, polyvinyl alcohol（PVA）Swollen resin granule 11%, cross-linking agent
2.5%th, initiator 0.45% and modified polyvinyl alcohol fabric 0.05%.
Wherein, described liquid rubber is the mixture containing three kinds of components, and by weight percentage, three kinds of groups are divided into 10%
CTPB liquid rubber, 80% terminal hydroxyl polybutadiene liquid rubber and 10% polyprene liquid rubber.With liquid
The range of water shutoff agent, as one of the main component of water shutoff agent, can be expanded, meet the construction of different temperatures reservoir by rubber
Require, and the height of formation water salinity does not affect water shutoff agent performance, under reservoir conditions, plugging strength is larger, water blockoff selectivity
High.
Wherein, described solvent be mixed solvent, by weight percentage, mixed solvent consist of 80%N, N- dimethyl
Acetamide and 20% dimethyl sulfoxide.
Wherein, described nano-particle is nano-calcium carbonate.The particle diameter of described PVA swollen resin granule is 500 mesh.Nanometer
Calcium Carbonate and the addition of PVA swollen resin granule, can increase water blockoff agent prescription bulk strength, improve the shut-off capacity of water shutoff agent,
Do not affect the overall expansion character in reservoir network fracture of formula simultaneously.
Wherein, described cross-linking agent is iso-cyanuric acid triallyl ester.The each component of described initiator is by weight percentage
The mixture of 6% peroxysuccinic acid, 1% peroxide of glutaric acid and 93% water.Cross-linking agent and the use of initiator, can make water shutoff agent
Intensity higher, expansion character preferably, adjusts crack closure by expanding, and reduces the water blockoff because adhesion reduces and lost efficacy, extends
Water shutoff agent action time.
Further, plug water construction is carried out using above-mentioned volume fracturing transformation crack water shutoff agent, construction method includes as follows
Step, percentage ratio described in each step is all weight percentage：
1）With fracturing blender truck, 50% liquid rubber and 25% solvent are sucked in mulling pond, stir emery wheel with fracturing blender truck and add 11% to receive
Rice Calcium Carbonate and 11%PVA swollen resin granule, then add 2.5% cross-linking agent with fracturing blender truck proportioning pump, manually add into mulling pond
Enter 0.45% initiator and 0.05% modified polyvinyl alcohol fabric, material mix homogeneously described in this step obtains water shutoff agent；
2）Using fracturing blender truck by step 1）The water shutoff agent of preparation is pumped to cementing truck, will with 200L/min discharge capacity through cementing truck
Water shutoff agent injects stratum；
3）38.5m is injected again in stratum3Spacer slug（The 70% of the total consumption of water shutoff agent）.Described spacer slug with
Percentage by weight is calculated as 2% clay stabilizer, 1% cleanup additive, 1% ammonium chloride, 0.4% hydroxypropyl guanidine that glue, and 0.4% organic boron is crosslinked
Agent and the mixture of 95.2% water composition.In this step, clay stabilizer is G511-NWJ clay stabilizer；Cleanup additive is G517-
XZ cleanup additive；Organic borate cross-linker is G501-YJ organic borate cross-linker；Wherein, G511-NWJ clay stabilizer, G517-XZ help
Row's agent, G501-YJ organic borate cross-linker are the independent research of drilling engineering and technological research institute of Chuan Qing drilling project company limited and produce
Product.
4）15m is injected again in stratum3Gel breaker；Described gel breaker is 5% hydrogen peroxide and 95% water by weight percentage
Mixture.
5）Finally inject 143m3Clear water is as displacement fluid（The injected slurry volume of described displacement fluid be pit shaft oil pipe internal volume with
The transformation of early stage volume fracturing adds the summation of the volume of 2 times of proppant quantity, because every bite volume fracturing well adds sand transformation
Scale is different, and fracture spaces are also different accordingly, so will be designed according to specific well situation, to set early stage volume fracturing
Sand feeding amount 70 side, well depth 1000m calculates）, and operational discharge capacity is improved to 600L/min, it is little that construction closes well head 24 after terminating
When, achievable volume fracturing transformation network fracture EXIT POINT once blocks completely.
Above embodiments of the present invention are described, but the present invention is not limited to above-mentioned embodiment, in this area
The ken that possesses of those of ordinary skill in, various changes can also be made on the premise of without departing from present inventive concept
Change.
Claims (4)
1. a kind of volume fracturing transformation crack water shutoff agent is it is characterised in that include following component, and each component is by weight percentage
Consist of：Liquid rubber 40 ~ 60%, solvent 20 ~ 30%, nano-particle 5 ~ 15%, swollen resin granule 5 ~ 15%, cross-linking agent 1 ~ 3%,
Initiator 0.1 ~ 1% and fiber 0.01 ~ 0.2%；Described liquid rubber is CTPB liquid rubber, the poly- fourth of terminal hydroxy group
Any one in diene liquid rubber, polyprene liquid rubber；Described solvent is N, N- dimethylformamide, N, N- diformazan
Any one in yl acetamide, dimethyl sulfoxide；Described nano-particle is nano-calcium carbonate；Described swollen resin granule is poly- second
Enol swollen resin granule, the particle size range of this granule is 300～600 mesh；Described cross-linking agent is the different melamine of triallyl
Acid esters；Described initiator is peroxysuccinic acid, any one in peroxide of glutaric acid；Described fiber is that modified polyvinylalcohol is fine
Dimension.
2. water-blocking construction method is carried out using the volume fracturing transformation crack water shutoff agent described in claim 1 it is characterised in that
Comprise the steps, percentage ratio described in each step is all weight percentage：
With fracturing blender truck, 40 ~ 60% liquid rubbers and 20 ~ 30% solvents are sucked in mulling pond, with fracturing blender truck stir emery wheel add 5 ~
15% nano-particle and 5 ~ 15% swollen resin granules, then add 1 ~ 3% cross-linking agent, the people into mulling pond with fracturing blender truck proportioning pump
Work adds 0.1 ~ 1% initiator and 0.01 ~ 0.2% fiber, and material mix homogeneously described in this step obtains water shutoff agent；
Using fracturing blender truck by step 1）The water shutoff agent of preparation is pumped to cementing truck, will with 100 ~ 300L/min discharge capacity through cementing truck
Water shutoff agent injects stratum；
Inject spacer slug again in stratum, the injection rate of described spacer slug is the 50 ~ 80% of the total consumption of water shutoff agent；
5 ~ 15m3 gel breaker is injected again in stratum；
Last injected clear water is as displacement fluid, and operational discharge capacity is improved to 500 ~ 700L/min, and construction closes well head after terminating
24 hours, the injected slurry volume of described displacement fluid was that pit shaft oil pipe internal volume adds proppant quantity 2 with the transformation of early stage volume fracturing
The summation of volume again.
3. volume fracturing according to claim 2 transformation crack water-blocking construction method is it is characterised in that described insulating liquid
Slug is grouped into by following groups, and each weight percentages of components is：Clay stabilizer 0.5 ~ 2%, cleanup additive 0.5 ~ 2%, ammonium chloride 0.5
~ 2%, hydroxypropyl guanidine that glue 0.3 ~ 0.5%, organic borate cross-linker 0.2 ~ 0.5% and water 93.0-98.0%.
4. the volume fracturing transformation crack water-blocking construction method according to claim 2 is it is characterised in that described gel breaker
It is 5 ~ 10% hydrogen peroxide that mass fraction is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410254211.8A CN104099074B (en) | 2014-06-10 | 2014-06-10 | Volume fracturing reconstruction crack plugging agent and water plugging construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410254211.8A CN104099074B (en) | 2014-06-10 | 2014-06-10 | Volume fracturing reconstruction crack plugging agent and water plugging construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104099074A CN104099074A (en) | 2014-10-15 |
| CN104099074B true CN104099074B (en) | 2017-02-15 |
Family
ID=51667626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410254211.8A Active CN104099074B (en) | 2014-06-10 | 2014-06-10 | Volume fracturing reconstruction crack plugging agent and water plugging construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104099074B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405360B (en) * | 2014-10-27 | 2018-02-27 | 中石化胜利油田分公司采油工艺研究院 | A kind of fracturing process for improving fracturing fluid solid-carrying performance |
| CN107287669A (en) * | 2016-04-12 | 2017-10-24 | 中国石油化工集团公司 | A kind of alkaline-resisting temperature resistance PVA fibers and application thereof |
| CN107287675A (en) * | 2016-04-12 | 2017-10-24 | 中国石油化工集团公司 | A kind of vinal and preparation method thereof |
| CN110724508B (en) * | 2018-07-16 | 2022-01-14 | 长江大学 | Fiber composite gel particle bridging agent for fractured reservoir and preparation method thereof |
| CN109236274B (en) * | 2018-11-01 | 2022-05-10 | 中国石油天然气股份有限公司 | Well selection method for water plugging of high-water-content oil well |
| CN110500080B (en) * | 2019-09-20 | 2021-09-07 | 四川洁能锐思石油技术有限公司 | High-permeability bottoming water coning shut-in well plugging dredging production control comprehensive treatment method |
| CN114075431B (en) * | 2020-08-17 | 2023-10-13 | 中石化石油工程技术服务有限公司 | Weak cross-linked polymer for plugging oil-based drilling fluid and preparation method thereof |
| CN114017017B (en) * | 2021-11-11 | 2023-05-05 | 西南石油大学 | Multi-scale crack plugging condition evaluation and experiment method |
| CN115109571B (en) * | 2022-05-23 | 2023-10-24 | 四川捷贝通能源科技有限公司 | Temperature-control phase-change water shutoff agent and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080028994A1 (en) * | 2006-08-07 | 2008-02-07 | Veronique Barlet-Gouedard | Geopolymer composition and application in oilfield industry |
| CN102557539A (en) * | 2011-12-27 | 2012-07-11 | 天津市宝坻区兴海盛橡胶加工厂 | High-performance rubber concrete |
| WO2012174527A3 (en) * | 2011-06-17 | 2013-02-21 | M-I L.L.C. | Composition of polybutadiene-based formula for downhole applications |
| CN102443383B (en) * | 2011-09-06 | 2013-04-24 | 中国石油天然气集团公司 | High-dehydration hardenable plugging sealing agent |
| CN103756659A (en) * | 2013-12-28 | 2014-04-30 | 北京国海能源技术研究院 | Flexible particle diverter and preparation method thereof |
-
2014
- 2014-06-10 CN CN201410254211.8A patent/CN104099074B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080028994A1 (en) * | 2006-08-07 | 2008-02-07 | Veronique Barlet-Gouedard | Geopolymer composition and application in oilfield industry |
| WO2012174527A3 (en) * | 2011-06-17 | 2013-02-21 | M-I L.L.C. | Composition of polybutadiene-based formula for downhole applications |
| CN103827252A (en) * | 2011-06-17 | 2014-05-28 | M-I有限公司 | Composition of polybutadiene-based formula for downhole applications |
| CN102443383B (en) * | 2011-09-06 | 2013-04-24 | 中国石油天然气集团公司 | High-dehydration hardenable plugging sealing agent |
| CN102557539A (en) * | 2011-12-27 | 2012-07-11 | 天津市宝坻区兴海盛橡胶加工厂 | High-performance rubber concrete |
| CN103756659A (en) * | 2013-12-28 | 2014-04-30 | 北京国海能源技术研究院 | Flexible particle diverter and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104099074A (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099074B (en) | Volume fracturing reconstruction crack plugging agent and water plugging construction method | |
| CN103725277B (en) | A kind of fiber composite temporary plugging agent | |
| CN108300439B (en) | Water-soluble temporary plugging agent for fracturing temporary plugging steering of oil and gas well and preparation method thereof | |
| CN102093864B (en) | Temporary plugging diversion agent for refracturing of oil-water well and preparation method thereof | |
| CN105504158A (en) | Intelligent gel particles capable of being crosslinked again under stratum condition and preparation method and application of intelligent gel particles | |
| CN106317321B (en) | It is used to prepare the composition of underground crosslinking plural gel and crosslinking plural gel prepared therefrom | |
| CN103113864B (en) | Temporary blocking agent, composite blockage removal agent and combined blockage removal method using temporary blocking agent and composite blockage removal agent | |
| EA009172B1 (en) | Method of completing poorly consolidated formations | |
| CN104861953A (en) | Oil field fracture temporary plugging agent and preparation method thereof | |
| WO2014085055A1 (en) | Methods of enhancing the fracture conductivity of multiple interval fractures in subterranean formations propped with cement packs | |
| CN105658760B (en) | Well treatment fluid and its application method comprising zirconium crosslink agent | |
| CN110484229B (en) | Composite oil displacement system for low-permeability oil reservoir and preparation and application methods thereof | |
| CN105649593A (en) | Method for maintaining flow conductivity of multi-slit fracturing seams in horizontal well section | |
| CN101086210A (en) | Profile control and water plugging technology for coal bed gas | |
| CN106188403A (en) | A kind of anti-CO of high temperature and high salt oil deposit2has channeling blocking agent and preparation method thereof | |
| CN109915093A (en) | A kind of method that " stifled/tune/drive " integration improves oil recovery | |
| CA2922848A1 (en) | Carbonate based slurry fracturing using solid acid for unconventional reservoirs | |
| CA3009163C (en) | Multifunctional solid particulate diverting agent | |
| CN106958438B (en) | A kind of method for removing blockage of polymer flooding blocking well | |
| Chen et al. | Experimental Study on Fiber Balls for Bridging in Fractured-Vuggy Reservoir | |
| CN103468237A (en) | Clean fracturing fluid and preparation method thereof | |
| CN111087998B (en) | Slow-expansion particles and preparation method thereof | |
| CN108300442A (en) | A kind of shale gas pressure break overcome high stress difference temporarily stall to diverting agent and preparation method thereof | |
| CN112324411A (en) | Loose sandstone heavy oil reservoir vertical well complex long-seam fracturing process | |
| CN105368420B (en) | Low elasticity microballoon for transfer drive and the compound displacement system containing it and transfer drive method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201119 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710016 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Patentee before: CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED ENGINEERING TECHNOLOGY Research Institute |
|
| TR01 | Transfer of patent right |