CN109236259A - A kind of contradictory fracturing process of adjustment water injection well plane water drive - Google Patents
A kind of contradictory fracturing process of adjustment water injection well plane water drive Download PDFInfo
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- CN109236259A CN109236259A CN201811285897.1A CN201811285897A CN109236259A CN 109236259 A CN109236259 A CN 109236259A CN 201811285897 A CN201811285897 A CN 201811285897A CN 109236259 A CN109236259 A CN 109236259A
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- liquid
- intrinsic fracture
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- injection well
- water injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/261—Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation
Abstract
The invention discloses a kind of contradictory fracturing process of adjustment water injection well plane water drive, include the following steps, the low liquid in pit shaft out, then set packer；Prepad fluid is injected, intrinsic fracture is opened；The intrinsic fracture deep that mixed liquor injection step 2 is opened, along in intrinsic fracture direction leak-off and in intrinsic fracture TSOP fracturing, mixed liquor includes at least the liquid in proppant and step 2；Liquid gum plug class blocking agent, insulating liquid and diverting agent are implanted sequentially to the intrinsic fracture of unlatching；If intrinsic fracture be it is a plurality of if step 2-4 is repeated to each intrinsic fracture；Liquid gum plug class blocking agent is injected to intrinsic fracture, upper lifting pipe post closing well waits solidifying, closure of the formation to intrinsic fracture；It carries out water injection well and temporarily blocks up pressing crack construction, form man-made fracture along orientation of principal stress.Shorten water drive radius, achievees the purpose that improve plane waterflooding effect, promotes oil reservoir whole development effect.
Description
Technical field
The present invention relates to In Oil Field Exploration And Development underground work technical field, especially a kind of adjustment water injection well plane water drive lance
The fracturing process of shield.
Background technique
With the development of society, the mankind are increasing petroleum-based energy demand, and it is hypotonic in domestic development reserves at present
Saturating oil reservoir accounting is larger, such oil reservoir development mainly uses waterflooding extraction mode, and water injection well is most of with perforation and high energy gas
Based on fracturing production, but the factors such as poor by reservoir properties, natural microcrack development are influenced, and injection water directionality is obvious, leads to edge
Intrinsic fracture direction injection water speed of advancing by leaps and bounds is fast, corresponding waterflood or High water cut, and other direction oil well displacement systems are established
Slowly, production decline is big after bringing in, and well yield is kept low for a long time and is distributed in flakes, and plane water drive contradiction is prominent
Out, oil reservoir whole development effect is poor.
For this purpose, in recent years, by local strengthening water filling, temporarily shut down high water-cut well, well water plugging and profile controlling, oil well measure are drawn
Adjustment plane water drive contradiction is strengthened in the behaves such as effect, achieves some effects, but still is faced with water drive system and establishes slow, plane
The particularly thorny problem of water drive；In addition, water injection well Fracturing Technology Pilot trial has been carried out in Some Domestic oil field, achieve preferably
Effect, demonstrate technology can property row, how to improve water injection well stimulation measure specific aim, measure for improvement effect become current face
The main problem faced also becomes Fractured Low-Permeability Reservoir and solves oil reservoir development contradiction, realizes that Efficient Development is most urgent and asks
Topic.
Summary of the invention
The embodiment of the present invention solves existing skill by providing a kind of adjustment water injection well plane water drive contradictory fracturing process
It is whole to realize improvement plane waterflooding effect, promotion oil reservoir for the problem that Fractured hyposmosis Water injected reservoir water drive is difficult to set up in art
The purpose of body development effectiveness.
The technical solution adopted by the present invention to solve the technical problems is: a kind of contradictory pressure of adjustment water injection well plane water drive
Cracking method, which comprises the following steps:
1) low for the liquid gone out in pit shaft, then set packer；
2) prepad fluid is injected, intrinsic fracture is opened；
3) the intrinsic fracture deep for opening mixed liquor injection step 2, along intrinsic fracture direction leak-off and in intrinsic fracture
TSOP fracturing, mixed liquor include at least the liquid in proppant and step 2；
4) liquid gum plug class blocking agent, insulating liquid and diverting agent are implanted sequentially to the intrinsic fracture of unlatching；
5) if intrinsic fracture be it is a plurality of if step 2-4 is repeated to each intrinsic fracture；
6) liquid gum plug class blocking agent is injected to intrinsic fracture, upper lifting pipe post closing well waits solidifying, closure of the formation to intrinsic fracture；
7) it carries out water injection well and temporarily blocks up pressing crack construction, form man-made fracture along biggest principal stress direction.
The low liquid in pit shaft out is carried out using active water in step 1), wherein the operational discharge capacity of active water is 0.4-
0.6m3/min；With 0.6-6.0m3The operational discharge capacity of/min makes packer setting.
Prepad fluid in step 2) is guanidine matrix liquid, and wherein the mass concentration of guanidine matrix liquid is 0.3%-0.5%, construction row
Amount is 3.0-8.0m3/ min, injection rate 10-20m3。
Mixed liquor in step 3) is that guanidine matrix liquid and 40-70 mesh or 70-100 mesh mixed with proppants form.
The concentration of the proppant is 78-200g/cm3, additional amount is 3-5m3。
The dosage of liquid gum plug class blocking agent is related to the oil well number that water injection well is connected in step 4), and what is be connected to water injection well is every
The dosage of liquid gum plug class blocking agent is 4-8m in one intrinsic fracture network system3。
Insulating liquid is guanidine glue crosslinked fluid in step 4), wherein injection guanidine glue crosslinked fluid insulating liquid dosage is 3-5m3。
Diverting agent used in step 4) is water-soluble diverting agent, and water-soluble diverting agent is added and blocks predominant pathway, into one
Step, which is promoted, stitches interior net pressure, increases the slit width of other intrinsic fractures, and the proppant in step 3 is enable to migrate to new broadening seam
Deep forms longer sand plug, avoid the main pressure break stage in later period along orientation of principal stress major fracture with do not block it is micro-
Crack is linked up.
The addition opportunity of the water solubility diverting agent is that liquid measure 2-3m is isolated in injection guanidine glue crosslinked fluid3When, series, which is added, is
Data or Production development verifying water breakthrough oil well well number subtract 1 time after tested in well group, and first order additional amount is 100-150Kg, after
Level-one additional amount 50-100Kg more than previous stage.
The replacement amount of liquid gum plug class blocking agent was replacement 2-4m in step 6)3, closing well, which is waited, to coagulate at least 4 hours, makes liquid
Rubber plug diverting agent in crack with the abundant plastic of mixed with proppants.
The one or more technical solutions provided in the embodiment of the present invention, at least have the following technical effect that
1. the fracturing technology method is after the implementation of Fractured Low-Permeability Reservoir water injection well, one side well group region raw water is driven excellent
Gesture low-pressure channel is blocked, and causes water drive channel from natural microcrack to Matrix transition, and waterflooding effect is from inefficient water injection to effective
Water filling transformation；On the other hand the man-made fracture formed shortens the water drive radius for filling the water the well that do not take effect, and reaching improves plane water drive
Effect, the purpose established new displacement system, promote oil reservoir whole development effect.
2. corresponding oil well achievees the purpose that control water, increases oil, it is embodied in High water cut or the decline of water logging well water, low pressure
In low aqueous stripper well reservoir pressure restore, water drive takes effect, and well yield improves.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, say that needs make in describing below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is that the present invention advances by leaps and bounds figure along natural microcrack direction injection water.
Fig. 2 is the state diagram that intrinsic fracture I is first turned on and blocked in the present invention.
Fig. 3 is the state diagram that intrinsic fracture I of the invention is opened and blocked by temporarily stifled rear intrinsic fracture II.
Fig. 4 is that water injection well temporarily blocks up pressure break schematic diagram after intrinsic fracture I and II of the invention is blocked simultaneously.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, by technical solution in the embodiment of the present invention carry out it is clear,
It is fully described by, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
Embodiment 1
A kind of contradictory fracturing process of adjustment water injection well plane water drive, which comprises the following steps:
1) low for the liquid gone out in pit shaft, then set packer；
2) prepad fluid is injected, intrinsic fracture is opened；
3) the intrinsic fracture deep for opening mixed liquor injection step 2, along intrinsic fracture direction leak-off and in intrinsic fracture
TSOP fracturing, mixed liquor include at least the liquid in proppant and step 2；
4) liquid gum plug class blocking agent, insulating liquid and diverting agent are implanted sequentially to the intrinsic fracture of unlatching；
5) if intrinsic fracture be it is a plurality of if step 2-4 is repeated to each intrinsic fracture；
6) liquid gum plug class blocking agent is injected to intrinsic fracture, upper lifting pipe post closing well waits solidifying, closure of the formation to intrinsic fracture；
7) it carries out water injection well and temporarily blocks up pressing crack construction, form man-made fracture along biggest principal stress direction.
The present invention is that the technical thought of oil well measure volume increase and oilwell water shutoff is introduced into a process of water injection well,
Temporarily block up the thinking that combines of pressure break using intrinsic fracture+water injection well is blocked, concrete operations are as follows: be before water injection well pressure break,
By liquid gum plug blocking agent+proppant+diverting agent combination mode, the natural fine fisssure that water injection well and oil well have been linked up is blocked step by step
Seam, then pressure break is temporarily blocked up by water injection well, the complicated seam net along biggest principal stress direction is formed, shortens water drive radius, reaches improvement
Plane waterflooding effect, the purpose for promoting oil reservoir whole development effect solve Fractured hyposmosis Water injected reservoir water drive and are difficult to set up
Problem.
Embodiment 2
As shown in Figure 1 and Figure 2, it is to improve on the basis of embodiment 1, carries out low replace out using active water in step 1)
Liquid in pit shaft, wherein the operational discharge capacity of active water is 0.4-0.6m3/min；With 0.6-6.0m3The operational discharge capacity of/min makes to seal
It is set every device.Active water is injected from oil pipe, returns to ground from the annular space of oil pipe and casing；Active water makes well for cleaning pit shaft
Cylinder is clean, it is ensured that packer setting effect.
Prepad fluid in step 2) is guanidine matrix liquid, and wherein the mass concentration of guanidine matrix liquid is 0.3%-0.5%, construction row
Amount is 3.0-8.0m3/ min, injection rate 10-20m3.Guanidine matrix liquid is injected, the natural microcrack linked up with oil well is opened, wherein
Guanidine matrix liquid can be substituted with other drop blocking solutions, can achieve the intrinsic fracture for strutting and linking up with oil well.
The intrinsic fracture linked up with oil well is opened, this natural seam may be to be formed after a plurality of intrinsic fracture is communicated with each other
One additional a plurality of secondary crack of main seam, it is also possible to which a plurality of intrinsic fracture simultaneously and deposits, this is depended primarily on develops in reservoir
The factors such as the density and orientation situation of intrinsic fracture.
Mixed liquor in step 3) is that guanidine matrix liquid and 40-70 mesh or 70-100 mesh mixed with proppants form.
The concentration of the proppant is 78-200g/cm3, additional amount is 3-5m3.By 40-70 mesh or 70-100 mesh proppant
It is added in guanidine matrix liquid and forms mixed liquor, the natural microcrack deep for then opening mixed liquor injection, in natural microcrack
The quick leak-off in direction and TSOP fracturing.
Embodiment 3
As shown in Figure 3, Figure 4, it is improved on the basis of embodiment 1, embodiment 2, and liquid gum plug class is stifled in step 4)
The dosage of agent is related to the oil well number that water injection well is connected to, liquid glue in each the intrinsic fracture network system being connected to water injection well
The dosage for filling in class blocking agent is 4-8m3.It is in a liquid state before the injection of liquid gum plug class blocking agent and easily injects, in certain temperature and pressure condition
Under be consolidated into rubber plug and have certain intensity.The effect of liquid gum plug class blocking agent is to fill the proppant injected into step 3
It is consolidated in hole and with proppant, blocks the natural microcrack that original oil-water well is linked up and the injection water predominant pathway formed, reach
It blocks water to adjustment injection water water drive horizontal contradiction and oil well and increases the purpose of oil.
Insulating liquid is guanidine glue crosslinked fluid in step 4), wherein injection guanidine glue crosslinked fluid insulating liquid dosage is 3-5m3.Guanidine glue is handed over
Connection insulating liquid is the high viscosity characteristic using guanidine glue crosslinked fluid, liquid gum plug class blocking agent is integrally pushed to the depth of intrinsic fracture
Place guarantees that liquid gum plug class blocking agent is not broken up.
Diverting agent used in step 4) is water-soluble diverting agent, and water-soluble diverting agent is added and blocks predominant pathway, into one
Step, which is promoted, stitches interior net pressure, increases the slit width of other intrinsic fractures, and the proppant in step 3 is enable to migrate to new broadening seam
Deep forms longer sand plug, avoid the main pressure break stage in later period along orientation of principal stress major fracture with do not block it is micro-
Crack is linked up.
The addition opportunity of the water solubility diverting agent is that liquid measure 2-3m is isolated in injection guanidine glue crosslinked fluid3When, series, which is added, is
Data or Production development verifying water breakthrough oil well well number subtract 1 time after tested in well group, and first order additional amount is 100-150Kg, after
Level-one additional amount 50-100Kg more than previous stage.
The replacement amount of liquid gum plug class blocking agent was replacement 2-4m in step 6)3, closing well, which is waited, to coagulate at least 4 hours, makes liquid
Rubber plug diverting agent in crack with the abundant plastic of mixed with proppants.
Water-soluble diverting agent is usually in solid-state under normal temperature and pressure conditions, meets water and degrades under certain temperature and pressure condition
Aquation prevents from causing reservoir secondary injury, and main function is to wait the intrinsic fracture that solidifying preceding closure has turned in non-closing well, into
And open natural microcrack that is not opening and having linked up with oil well.
It is implanted sequentially liquid gum plug class blocking agent, insulating liquid and diverting agent in step 4, is the injection of continuous not termination of pumping
Journey, intermediate Non-intermittent can achieve simplified working procedure, shorten the purpose of construction period.
Embodiment 4
As Figure 1-Figure 4, it is improved on the basis of embodiment 3 embodiment 1-, and it is low that the present invention be directed to Fractureds
Infiltration oil reservoir is advanced by leaps and bounds along natural microcrack direction injection water, and corresponding oil well High water cut or water logging, water drive swept volume is smaller, well group
The particularly thorny problem of plane water drive, the technical thought of oil well measure volume increase and oilwell water shutoff is introduced into water injection well, is proposed
Closure intrinsic fracture+water injection well temporarily blocks up the thinking that pressure break combines and that is, before water injection well pressure break passes through liquid gum plug blocking agent
+ proppant+diverting agent combination mode, blocks the natural microcrack that water injection well and oil well have been linked up, then pass through water injection well step by step
Temporarily stifled pressure break forms the complicated seam net along biggest principal stress direction, shortens water drive radius (major fracture shown in 4 figures and fine fisssure in figure
The distance between seam and oil well), achieve the purpose that improve plane waterflooding effect, promote oil reservoir whole development effect, solves crack
The problem that property hyposmosis Water injected reservoir water drive is difficult to set up.Specific fracturing process following steps:
A kind of contradictory fracturing process of adjustment water injection well plane water drive, which comprises the following steps:
1) low for the liquid gone out in pit shaft, then set packer；
2) prepad fluid is injected, intrinsic fracture is opened；
3) the intrinsic fracture deep for opening mixed liquor injection step 2, along intrinsic fracture direction leak-off and in intrinsic fracture
TSOP fracturing, mixed liquor include at least the liquid in proppant and step 2；
4) liquid gum plug class blocking agent, insulating liquid and diverting agent are implanted sequentially to the intrinsic fracture of unlatching；
5) if intrinsic fracture be it is a plurality of if step 2-4 is repeated to each intrinsic fracture；
6) liquid gum plug class blocking agent is injected to intrinsic fracture, upper lifting pipe post closing well waits solidifying, closure of the formation to intrinsic fracture；
7) it carries out water injection well and temporarily blocks up pressing crack construction, form man-made fracture along biggest principal stress direction.
Finally, opening pump again, carry out water injection well and temporarily block up pressing crack construction, forms major fracture along biggest principal stress direction, simultaneously
The complexity that crack is promoted by temporary plugging technique, further reduces lateral oilwell and the oil well water drive radius that do not take effect, reaches and change
The purpose of kind plane waterflooding effect.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.
It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not the present invention claims protection scope within.
Claims (10)
1. a kind of contradictory fracturing process of adjustment water injection well plane water drive, which comprises the following steps:
1) low for the liquid gone out in pit shaft, then set packer；
2) prepad fluid is injected, intrinsic fracture is opened；
3) the intrinsic fracture deep for opening mixed liquor injection step 2, along intrinsic fracture direction leak-off and in intrinsic fracture end
Sand fallout, mixed liquor include at least the liquid in proppant and step 2；
4) liquid gum plug class blocking agent, insulating liquid and diverting agent are implanted sequentially to the intrinsic fracture of unlatching；
5) if intrinsic fracture be it is a plurality of if step 2-4 is repeated to each intrinsic fracture；
6) liquid gum plug class blocking agent is injected to intrinsic fracture, upper lifting pipe post closing well waits solidifying, closure of the formation to intrinsic fracture；
7) it carries out water injection well and temporarily blocks up pressing crack construction, form man-made fracture along biggest principal stress direction.
2. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1, it is characterised in that: step
1) the low liquid in pit shaft out is carried out using active water in, wherein the operational discharge capacity of active water is 0.4-0.6m3/min；With
0.6-6.0m3The operational discharge capacity of/min makes packer setting.
3. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1, it is characterised in that: step
2) prepad fluid in is guanidine matrix liquid, and wherein the mass concentration of guanidine matrix liquid is 0.3%-0.5%, operational discharge capacity 3.0-
8.0m3/ min, injection rate 10-20m3。
4. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1, it is characterised in that: step
3) mixed liquor in is that guanidine matrix liquid and 40-70 mesh or 70-100 mesh mixed with proppants form.
5. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 4, it is characterised in that: described
The concentration of proppant is 78-200g/cm3, additional amount is 3-5m3。
6. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1, it is characterised in that: step
4) dosage of liquid gum plug class blocking agent is related to the oil well number that water injection well is connected in, each intrinsic fracture being connected to water injection well
The dosage of liquid gum plug class blocking agent is 4-8m in network system3。
7. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1, it is characterised in that: step
4) insulating liquid is guanidine glue crosslinked fluid in, wherein injection guanidine glue crosslinked fluid insulating liquid dosage is 3-5m3。
8. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1 or claim 7, it is characterised in that:
Diverting agent used in step 4) is water-soluble diverting agent, and water-soluble diverting agent is added and blocks predominant pathway, further promotes seam
Interior net pressure increases the slit width of other intrinsic fractures, and the proppant in step 3 is enable to migrate to the deep of new broadening seam, shape
At longer sand plug, the main pressure break stage in later period is avoided along the major fracture of orientation of principal stress and does not block microcrack ditch
It is logical.
9. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 8, it is characterised in that: described
The addition opportunity of water-soluble diverting agent is that liquid measure 2-3m is isolated in injection guanidine glue crosslinked fluid3When, be added series be well group in after tested
Data or Production development verifying water breakthrough oil well well number subtract 1 time, and first order additional amount is 100-150Kg, rear stage additional amount ratio
The more 50-100Kg of previous stage.
10. a kind of contradictory fracturing process of adjustment water injection well plane water drive according to claim 1, it is characterised in that: step
It is rapid 6) in the replacement amount of liquid gum plug class blocking agent be replacement 2-4m3, closing well, which is waited, to coagulate at least 4 hours, makes liquid gum plug diverting agent
In crack with the abundant plastic of mixed with proppants.
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|---|---|---|---|---|
| CN109944578A (en) * | 2019-02-27 | 2019-06-28 | 中国石油天然气股份有限公司 | A kind of prefabricated pressure break replaces the preparation method and its construction technology of isolator |
| CN111561300A (en) * | 2020-05-26 | 2020-08-21 | 中国石油天然气股份有限公司 | Method for improving water drive effect of water injection well of ultra-low permeability fractured reservoir |
| CN111577198A (en) * | 2020-05-28 | 2020-08-25 | 中国石油天然气股份有限公司 | Plugging and pressure increasing integrated repeated transformation method for controlling water and increasing oil by utilizing stratum pre-crosslinked gel plugging agent |
| CN113309502A (en) * | 2020-02-26 | 2021-08-27 | 中国石油化工股份有限公司 | Fracturing method for increasing transformation volume of deep shale gas reservoir |
| CN114183112A (en) * | 2020-09-15 | 2022-03-15 | 中国石油化工股份有限公司 | Displacement method for improving fracture support profile through intra-segment multi-cluster fracturing and fracturing method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834181A (en) * | 1987-12-29 | 1989-05-30 | Mobil Oil Corporation | Creation of multi-azimuth permeable hydraulic fractures |
| CN1869398A (en) * | 2005-05-25 | 2006-11-29 | 中国石油天然气股份有限公司 | Fracture method for horizontal well |
| CN104373103A (en) * | 2014-12-08 | 2015-02-25 | 中国石油天然气股份有限公司 | Old well slot temporary blockage refracturing tubular column and method capable of achieving large-displacement construction |
| CN204371286U (en) * | 2014-12-08 | 2015-06-03 | 中国石油天然气股份有限公司 | A kind of can stifled refracturing tubing string temporarily in the old well seam of high flow rate operation |
| CN104694095A (en) * | 2015-02-14 | 2015-06-10 | 丹诺(北京)石油技术服务有限公司 | Spacer fluid for penetrating selective plugging agent and application method of spacer fluid |
| CN105089603A (en) * | 2015-07-13 | 2015-11-25 | 中国石油大学(北京) | Reservoir modifying method through forming crack network by temporary plugging turning in cracks |
| CN105089596A (en) * | 2015-07-13 | 2015-11-25 | 中国石油大学(北京) | Hydraulic fracturing treatment method of an unconventional reservoir oil and gas well |
| CN105275442A (en) * | 2015-10-29 | 2016-01-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Old well re-transformation volume fracturing technology |
| CN106917619A (en) * | 2017-03-21 | 2017-07-04 | 中国石油天然气股份有限公司 | The temporary stall of slit formation carbonate reservoir to fracture support integration remodeling method |
| CN107558980A (en) * | 2017-07-18 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of low-density, which is temporarily blocked up, suppresses the long extension fracturing process of seam |
| CN107558981A (en) * | 2017-07-18 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of more the scope of grain size grading temporarily block up the fracturing technology for realizing complex fracture |
| CN108505982A (en) * | 2018-02-27 | 2018-09-07 | 中国石油天然气股份有限公司 | It is a kind of using liquid gum plug realize temporary stall to old well refracturing method for increasing |
-
2018
- 2018-10-31 CN CN201811285897.1A patent/CN109236259A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834181A (en) * | 1987-12-29 | 1989-05-30 | Mobil Oil Corporation | Creation of multi-azimuth permeable hydraulic fractures |
| CN1869398A (en) * | 2005-05-25 | 2006-11-29 | 中国石油天然气股份有限公司 | Fracture method for horizontal well |
| CN104373103A (en) * | 2014-12-08 | 2015-02-25 | 中国石油天然气股份有限公司 | Old well slot temporary blockage refracturing tubular column and method capable of achieving large-displacement construction |
| CN204371286U (en) * | 2014-12-08 | 2015-06-03 | 中国石油天然气股份有限公司 | A kind of can stifled refracturing tubing string temporarily in the old well seam of high flow rate operation |
| CN104694095A (en) * | 2015-02-14 | 2015-06-10 | 丹诺(北京)石油技术服务有限公司 | Spacer fluid for penetrating selective plugging agent and application method of spacer fluid |
| CN105089603A (en) * | 2015-07-13 | 2015-11-25 | 中国石油大学(北京) | Reservoir modifying method through forming crack network by temporary plugging turning in cracks |
| CN105089596A (en) * | 2015-07-13 | 2015-11-25 | 中国石油大学(北京) | Hydraulic fracturing treatment method of an unconventional reservoir oil and gas well |
| CN105275442A (en) * | 2015-10-29 | 2016-01-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Old well re-transformation volume fracturing technology |
| CN106917619A (en) * | 2017-03-21 | 2017-07-04 | 中国石油天然气股份有限公司 | The temporary stall of slit formation carbonate reservoir to fracture support integration remodeling method |
| CN107558980A (en) * | 2017-07-18 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of low-density, which is temporarily blocked up, suppresses the long extension fracturing process of seam |
| CN107558981A (en) * | 2017-07-18 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of more the scope of grain size grading temporarily block up the fracturing technology for realizing complex fracture |
| CN108505982A (en) * | 2018-02-27 | 2018-09-07 | 中国石油天然气股份有限公司 | It is a kind of using liquid gum plug realize temporary stall to old well refracturing method for increasing |
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