CN110029979A - A kind of fracturing process for realizing compact reservoir volume fracturing efficient support - Google Patents
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support Download PDFInfo
- Publication number
- CN110029979A CN110029979A CN201910376526.2A CN201910376526A CN110029979A CN 110029979 A CN110029979 A CN 110029979A CN 201910376526 A CN201910376526 A CN 201910376526A CN 110029979 A CN110029979 A CN 110029979A
- Authority
- CN
- China
- Prior art keywords
- fracturing
- mesh
- volume fracturing
- compact reservoir
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Nozzles (AREA)
Abstract
The invention belongs to technical field of oil production engineering more particularly to a kind of fracturing process for realizing compact reservoir volume fracturing efficient support.The present invention is by more shower holes, volume fracturing construction, seam, closing well, open flow and seeks five steps of production, solves the problems, such as that the effective degree of support of existing volume fracturing is insufficient.The present invention combines partial size proppant with 70/140 mesh by using more shower holes and pulse sand injection manner, preferably 40/70 mesh, and effectively support seam is long can be improved 30% or more, at the same volume fracturing crack sanding section be improved significantly.
Description
Technical field
The invention belongs to technical field of oil production engineering more particularly to a kind of compact reservoir volume fracturing efficient supports realized
Fracturing process.
Background technique
Compact reservoir has the characteristics that physical property is poor, the development of natural microcrack, is usually improved using extensive volume fracturing
Reservoir reconstruction volume.Existing volume fracturing technology mainly using concentrate perforation, ladder sand injection manner, mating low viscous fracturing fluid and
Greater particle size combined support agent (based on 20/40 mesh), but there are following main problems: and low viscous fracturing fluid sinks down into proppant
Outside oil reservoir bottom or payzone, cause sanding section undesirable or invalid support；Proppant transport distance is limited, volume fracturing waterpower
Crack cannot effectively support, and surveying effective degree of support is only 50% or so；Volume fracturing open intrinsic fracture, formed
Shearing crack narrower width, greater particle size proppant are difficult to enter support.Therefore, it is necessary to find out a kind of method realization compact reservoir
Volume fracturing efficient support achievees the purpose that laterally improving effective support stitches long, longitudinal improvement sanding section, to further mention
High-densit reservoir reconstruction volume.
Summary of the invention
The present invention provides a kind of fracturing process for realizing compact reservoir volume fracturing efficient support, and it is an object of the present invention to provide one
Kind laterally improves effective support and stitches long, longitudinal improvement sanding section, to realize the pressure of compact reservoir volume fracturing efficient support
Cracking method.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support, includes the following steps:
Step 1: more shower holes
The position for selecting reservoir porosity, permeability to be greater than this well average value carries out more shower holes；
Step 2: volume fracturing construction；
Step 3: seam
Using slippery water fracturing fluid seam, carries combined support agent and enter stratum；
Step 4: closing well
After the completion of step 3, closing well 25-35 minutes；
Step 5: open flow
After the completion of step 4, open flow simultaneously asks production；
More shower holes in the step one are using firepower perforation.
The perforation number of clusters is not less than 3 clusters, 1-2 meters of every cluster perforation length, the hole Perforation Density 14-18/rice, perforation phase
Parallactic angle 56-64 degree.
Volume fracturing construction is using oil jacket with note volume fracturing or light casing injected slurry volume pressure break work in the step two
Skill.
Combined support agent in the step three is composed of 40/70 mesh and 70/140 mesh proppant.
40/70 mesh is composed by volume for 1:1 with 70/140 mesh proppant.
Proppant used in pressure break is quartz sand or haydite in the step three, according to 40/70 mesh and 70/140 mesh volume
Than being composed for 1:1.
Proppant used in pressure break is injected using pulsed injection mode in the step three.
The utility model has the advantages that
The present invention is by more shower holes, volume fracturing construction, seam, closing well, open flow and seeks five steps of production, solves existing
The problem of some effective degree of support deficiencies of volume fracturing.The present invention is by using more shower holes and pulse sand injection manner, preferably
40/70 mesh combines partial size proppant with 70/140 mesh, and effectively support seam is long can be improved 30% or more, while volume fracturing crack is spread
Sand section be improved significantly.
The above description is only an overview of the technical scheme of the present invention, in order to better understand technology hand of the invention
Section, and can be implemented in accordance with the contents of the specification, and with presently preferred embodiments of the present invention and attached drawing be cooperated to be described in detail such as below
Afterwards.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is more shower holes of the invention schematic diagram；
Fig. 2 is pulsed injection mode schematic diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment one:
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support according to shown in Fig. 1-2, including walk as follows
It is rapid:
Step 1: more shower holes
The position for selecting reservoir porosity, permeability to be greater than this well average value carries out more shower holes；
Step 2: volume fracturing construction；
Step 3: seam
Using slippery water fracturing fluid seam, carries combined support agent and enter stratum；
Step 4: closing well
After the completion of step 3, closing well 25-35 minutes；
Step 5: open flow simultaneously asks production
Then the open flow after the completion of step 4 asks production；
More shower holes in the step one are using firepower perforation.
In actual use, the present invention by more shower holes, volume fracturing construction, seam, closing well, open flow and asks production five
Step, effectively support seam be long to can be improved 30% or more, at the same volume fracturing crack sanding section be improved significantly.In step 4
Closing well 25-35 minutes, it is the closure in order to force crack, guarantees the effect of pressure break.
In actual use, compared with hydraulic jet perforation mode, using in the prior art have deep penetrating firepower penetrate
Hole mode is conducive to more cluster crack initiations.
Embodiment two:
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support according to figure 1, not with embodiment one
Be with place: the perforation number of clusters is not less than 3 clusters, and 1-2 meters of every cluster perforation length, is penetrated the hole Perforation Density 14-18/rice
Hole phase angle 56-64 degree.
In actual use, using this technology side after optimization perforation length, Perforation Density and perforation phase angular dimensions
Case is conducive to more cluster crack initiations.
Embodiment three:
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support according to figure 1, not with embodiment one
Be with place: volume fracturing construction is using oil jacket with note volume fracturing or light casing injected slurry volume pressure break in the step two
Technique.
In actual use, using the technical program, be conducive to improve operational discharge capacity, improve proppant transport ability.
Example IV:
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support according to figure 1, not with embodiment one
Be with place: the combined support agent in the step three is composed of 40/70 mesh and 70/140 mesh proppant.
Preferably 40/70 mesh is composed by volume for 1:1 with 70/140 mesh proppant.
Preferably proppant used in pressure break is quartz sand or haydite in the step three, according to 40/70 mesh and 70/
140 mesh volume ratios are composed for 1:1.
In actual use, using combination small particle proppant, be conducive to proppant and enter microcrack, improve effectively support
Seam length.
Embodiment five:
According to Fig. 1 and a kind of fracturing process for realizing compact reservoir volume fracturing efficient support shown in Fig. 2, with embodiment
One the difference is that: in the step three proppant used in pressure break be using pulsed injection mode inject.
In actual use, it compared with staged injection mode, is injected using pulsed injection mode, is conducive to improve branch
Support seam length.Pulsed injection mode of the invention is 120-180 seconds, wherein when proppant pulse using a pulse period
Between be 90-120 second, the liquid pulse time is 30-60 seconds pulsed injection modes.
Embodiment six:
A kind of fracturing process for realizing compact reservoir volume fracturing efficient support according to shown in Fig. 1-2, according to applying as follows
Work step is operated suddenly:
Firstly, selecting reservoir properties compared with the more shower holes of good position, referring to Fig. 1；
Then pressing crack construction is carried out, i.e., makes ground as prepad fluid injection using the slippery water fracturing fluid accounted for into ground liquid measure 20%
Layer crack initiation extends；
Then, use slippery water fracturing fluid carry with 70/140 mesh combine partial size proppant by 40/70 mesh by volume for
The proppant of 1:1 mixing enters stratum；In volume fracturing work progress, using proppant pulsed injection mode, referring to figure
2；
Then, load fluid is replaced using slippery water fracturing fluid and enter stratum, wherein the dosage of displacement fluid is equivalent to construction pipe
Column volume；After the completion of secondary step, closing well 30 minutes, open flow and production is asked.
In the present embodiment, more perforations are using conventional firepower gun perforation process, 3 cluster of perforation number of clusters, every shower hole segment length
Spend 2 meters, 16 holes of Perforation Density/rice, 60 degree of perforation phase angle.Volume fracturing construction infuses volume fracturing using conventional oil jacket is same
Technique.Pressure break slippery water fracturing fluid, main purpose are to carry proppant and enter microcrack or intrinsic fracture.Used in pressure break
Proppant is mainly quartz sand or haydite, and 40/70 mesh and 70/140 mesh proppant volume ratio are 1:1.What the proppant used
It is pulsed injection mode, a pulse period is 120 seconds, and wherein the proppant burst length is 90 seconds, and the liquid pulse time is
30 seconds.Closing well 30 minutes are to force crack closure.
The above description is only an embodiment of the present invention, is not intended to limit the invention, all within principle of the invention, institute
Any modification, equivalent substitution, improvement and etc. of work, should all be included in the protection scope of the present invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
It is to be appreciated that in the absence of conflict, those skilled in the art can respectively show above-mentioned according to the actual situation
Relevant technical characteristic is combined with each other in example, different herein particularly for various combined situations to reach corresponding technical effect
One repeats.
The above, only presently preferred embodiments of the present invention, the present invention be not intended to be limited to it is shown in this article this
A little embodiments, and it is to fit to the widest scope consistent with principles disclosed herein and novel features.According to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, still fall within the technology of the present invention
In the range of scheme.
Claims (7)
1. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support, which comprises the steps of:
Step 1: more shower holes
The position for selecting reservoir porosity, permeability to be greater than this well average value carries out more shower holes；
Step 2: volume fracturing construction；
Step 3: seam
Using slippery water fracturing fluid seam, carries combined support agent and enter stratum；
Step 4: closing well
After the completion of step 3, closing well 25-35 minutes；
Step 5: open flow
After the completion of step 4, open flow simultaneously asks production.
More shower holes in the step one are using firepower perforation.
2. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support as described in claim 1, it is characterised in that:
The perforation number of clusters is not less than 3 clusters, 1-2 meters of every cluster perforation length, the hole Perforation Density 14-18/rice, perforation phase angle 56-
64 degree.
3. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support as described in claim 1, it is characterised in that:
Volume fracturing construction is using oil jacket with note volume fracturing or light casing injected slurry volume fracturing technology in the step two.
4. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support as described in claim 1, it is characterised in that:
Combined support agent in the step three is composed of 40/70 mesh and 70/140 mesh proppant.
5. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support as claimed in claim 4, it is characterised in that:
40/70 mesh is composed by volume for 1:1 with 70/140 mesh proppant.
6. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support as claimed in claim 4, it is characterised in that:
Proppant used in pressure break is quartz sand or haydite in the step three, is 1:1 group according to 40/70 mesh and 70/140 mesh volume ratio
It closes.
7. a kind of fracturing process for realizing compact reservoir volume fracturing efficient support as described in claim 1, it is characterised in that:
Proppant used in pressure break is injected using pulsed injection mode in the step three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910376526.2A CN110029979A (en) | 2019-05-07 | 2019-05-07 | A kind of fracturing process for realizing compact reservoir volume fracturing efficient support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910376526.2A CN110029979A (en) | 2019-05-07 | 2019-05-07 | A kind of fracturing process for realizing compact reservoir volume fracturing efficient support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110029979A true CN110029979A (en) | 2019-07-19 |
Family
ID=67241389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910376526.2A Pending CN110029979A (en) | 2019-05-07 | 2019-05-07 | A kind of fracturing process for realizing compact reservoir volume fracturing efficient support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110029979A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3838736A (en) * | 1972-09-08 | 1974-10-01 | W Driver | Tight oil or gas formation fracturing process |
| CN103527163A (en) * | 2013-09-24 | 2014-01-22 | 西南石油大学 | Tight reservoir horizontal well volume fracturing process |
| CN105134158A (en) * | 2015-08-26 | 2015-12-09 | 中国石油天然气股份有限公司 | Fracturing method for supplementing stratum energy of dense oil reservoir |
| CN106223922A (en) * | 2016-08-26 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | Staged fracturing technique is blocked up in the seam inner shield of shale gas horizontal well proppant temporarily |
| CN107420081A (en) * | 2017-09-08 | 2017-12-01 | 中国石油天然气股份有限公司 | A kind of fracturing process for realizing the effective partial pressure of fine and close heterogeneous reservoir |
| CN107558979A (en) * | 2016-06-30 | 2018-01-09 | 中国石油化工股份有限公司 | A kind of method of shale volume pressure break |
-
2019
- 2019-05-07 CN CN201910376526.2A patent/CN110029979A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3838736A (en) * | 1972-09-08 | 1974-10-01 | W Driver | Tight oil or gas formation fracturing process |
| CN103527163A (en) * | 2013-09-24 | 2014-01-22 | 西南石油大学 | Tight reservoir horizontal well volume fracturing process |
| CN105134158A (en) * | 2015-08-26 | 2015-12-09 | 中国石油天然气股份有限公司 | Fracturing method for supplementing stratum energy of dense oil reservoir |
| CN107558979A (en) * | 2016-06-30 | 2018-01-09 | 中国石油化工股份有限公司 | A kind of method of shale volume pressure break |
| CN106223922A (en) * | 2016-08-26 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | Staged fracturing technique is blocked up in the seam inner shield of shale gas horizontal well proppant temporarily |
| CN107420081A (en) * | 2017-09-08 | 2017-12-01 | 中国石油天然气股份有限公司 | A kind of fracturing process for realizing the effective partial pressure of fine and close heterogeneous reservoir |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107387053B (en) | Method for collaborative fracturing of main cracks and complex crack network of large channel | |
| CN110608024B (en) | Volume fracturing method for improving filling efficiency of micro-support system by deep shale gas | |
| CN109977612B (en) | Fracturing process suitable for encrypted development of shale gas well | |
| CN111322050B (en) | Shale horizontal well section internal osculating temporary plugging fracturing construction optimization method | |
| CN106907137B (en) | A kind of method of the effective water conservancy diversion in shale oil reservoir volume fracturing crack | |
| CN107965305B (en) | Layered repeated fracturing method | |
| CN106246150B (en) | A kind of oil field compression fracture remodeling method | |
| US11408264B2 (en) | Volumetric fracturing method of temporarily plugging and diverting through functional slick water with oil displacement agent injected simultaneously | |
| CN105239990B (en) | A kind of Oil in Super-low Permeability compact oil reservoir intends the lateral displacement horizontal well well-arranging procedure of this well | |
| CN110761765B (en) | Volume fracturing method for activating natural fracture in large range | |
| CN107545088B (en) | Normal-pressure shale gas horizontal well volume fracturing method | |
| CA2509130A1 (en) | Methods and compositions for introducing conductive channels into a hydraulic fracturing treatment | |
| CN106194145A (en) | A kind of the most stifled multistage degree of depth network acid fracturing method | |
| CN106593389B (en) | A kind of fracturing process for realizing high angle intrinsic fracture oil reservoir using permanent blocking agent | |
| CN103437746A (en) | Volume fracturing method for multiple cracks in multiple sections of horizontal well | |
| CN105422068A (en) | Method for developing heavy oil reservoir of horizontal well by combining staged volume fracturing and fracturing filling | |
| CN109751035A (en) | A kind of oil-gas reservoir fracturing sand feeding method | |
| CN109458168A (en) | A kind of Complex Temporary Blocking turnaround fracture method improving sandstone reservoir gas well deliverability | |
| Lolon et al. | Evaluating horizontal well placement and hydraulic fracture spacing/conductivity in the Bakken Formation, North Dakota | |
| CN109236257A (en) | A kind of radial bore volume fracturing method | |
| CN112324412A (en) | Method for forming complex seam net through volume fracturing | |
| CN106372377B (en) | A kind of fine silt oil reservoir filling anti-sand method | |
| CN110516407A (en) | More cluster fracturing fracture complexity calculating methods in a kind of fracture-type reservoir net horizontal section | |
| CN110529089A (en) | A kind of open-hole horizontal well refracturing method | |
| CN110029979A (en) | A kind of fracturing process for realizing compact reservoir volume fracturing efficient support |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190719 |
|
| RJ01 | Rejection of invention patent application after publication |