CN105604547A - Hydraulic fracturing method based ground stress measurement method suitable for fractured rock mass - Google Patents
Hydraulic fracturing method based ground stress measurement method suitable for fractured rock mass Download PDFInfo
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- CN105604547A CN105604547A CN201610104552.6A CN201610104552A CN105604547A CN 105604547 A CN105604547 A CN 105604547A CN 201610104552 A CN201610104552 A CN 201610104552A CN 105604547 A CN105604547 A CN 105604547A
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- hydraulic fracturing
- rock body
- fragmented rock
- measurement method
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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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The invention provides a hydraulic fracturing method based ground stress measurement method suitable for a fractured rock mass. The hydraulic fracturing method based ground stress measurement method comprises the steps of punching a test hole in the fractured or relatively fractured rock mass, conducting compaction grouting on the fractured or relatively fractured rock mass, removing a grouted cured substance in the test hole, and installing a hydraulic fracturing method based ground stress measurement device in a cleaned test hole to perform hydraulic fracturing method based ground stress testing. The hydraulic fracturing method based ground stress measurement method has the advantages of being simple, practical, economical and the like, can be effectively applied to hydraulic fracturing method based ground stress measurement of the fractured or relatively fractured rock mass and has good economic benefits and social benefits.
Description
Technical field
The invention belongs to geostress measurement technical field.
Background technology
Hydraulic fracturing geostress measurement technology is because its MTD is dark, easy and simple to handle, test period is short and do not need rock mechanics parameters to participate in the advantages such as calculating, at home and abroad be used widely, the rock engineerings such as its range of application covering water power, mine, traffic, military project and earthquake mechanism, geodynamical research, but it is had relatively high expectations to the integrality of rock mass, relevant Regulations regulation, hydraulic fracturing geostress measurement be only applicable to complete with than more complete rock mass, when running into fragmentation or during compared with fragmented rock body test section, just cannot carrying out geostress measurement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body, can effectively solve fragmentation or measure crustal stress problem compared with the hydraulic fracturing of fragmented rock body.
The technical scheme that technical solution problem of the present invention adopts is: a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body, comprises the following steps:
(1) from rockmass to broken or compared with setting instrument connection fragmented rock body, described instrument connection from rockmass through broken or compared with fragmented rock body and stretch in rockmass;
(2) Grouting Pipe and packer are installed in boring, to broken or carry out compaction grouting compared with fragmented rock body;
Etc. (3), after injection slurry solidifies, remove the slip casting solidfied material in instrument connection;
(4) hydraulic fracturing geostress measurement equipment is installed in the instrument connection after cleaning, to broken or carry out the test of hydraulic fracturing crustal stress compared with fragmented rock body.
In adopting technique scheme, the present invention is further technical scheme below can also adopting or combine and adopting:
The degree of depth that in described step (1), instrument connection stretches in rockmass is not less than 1m.
In described step (1), the bore diameter of instrument connection is 76m or 108mm.
Injection slurry in described step (2) adopts cement-silicate slurries.
Grouting scope in described step (2) is not less than the aperture of 3 times of instrument connections.
Intensity after the middle injection slurry of described step (3) solidifies is not less than 1MPa.
Broken after compaction grouting or be not more than 1 Lv Rong compared with the permeability rate of fragmented rock body.
Described geostress measurement equipment comprises packer and Steel Tube Special.
The invention has the beneficial effects as follows: the present invention proposes and be a kind ofly applicable to fragmentation or compared with the new technology of the hydraulic fracturing geostress measurement of fragmented rock body, efficiently solve fragmentation or measure crustal stress problem compared with the hydraulic fracturing of fragmented rock body, the present invention adopts cement-silicate slurries to fragmentation or carries out compaction grouting compared with fragmented rock body, require range of grouting to be not less than the bore diameter of 3 times, slurries cured strength is not less than 1MPa, broken after compaction grouting or be not more than 1 Lv Rong compared with the permeability rate of fragmented rock body, in hydraulic fracturing geostress survey process, guarantee that pressure energy circulation applies, to obtain the parameter such as instantaneous closing presure and reopening pressure after rock mass fracturing, calculate the stress primitively at test position. the present invention has simply, practical, economic dispatch advantage, can effectively be applied to fragmentation or compared with the hydraulic fracturing geostress measurement of fragmented rock body, have good economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is the boring schematic diagram of step 1 of the present invention.
Fig. 2 is the grouting schematic diagram of step 2 of the present invention.
Fig. 3 is the cleaning bottom of hole schematic diagram of step 4 of the present invention.
Fig. 4 is hydrofracturing schematic diagram of the present invention.
Number in the figure: 1-rockmass, 2-is broken or compared with fragmented rock body, 3-instrument connection, 4-Grouting Pipe, 5-isolator, 6-slip casting solidfied material, 7-Steel Tube Special.
Detailed description of the invention
With reference to accompanying drawing.
Of the present inventionly a kind ofly be applicable to fragmentation or compared with the hydraulic fracturing geostress measurement method of fragmented rock body, concrete implementation step is as follows:
Step 1: set (boring) instrument connection 3 at rockmass 1 use geological drilling rig, instrument connection 3 passes from rockmass 1, through fragmentation or compared with fragmented rock body 2, then enters in rockmass 1, the degree of depth that again enters rockmass 1 is not less than 1m, and the diameter D of instrument connection 3 is 76mm or 108mm.
Step 2: Grouting Pipe and packer are installed in boring, to broken or carry out compaction grouting compared with fragmented rock body. Injection slurry adopts cement-silicate slurries, and ratio, grouting pressure and the grouting time etc. of cement-silicate determine according to on-the-spot test, but will guarantee that grouting scope is not less than the diameter D of the instrument connection 3 of 3 times, and the intensity after slurries solidify is not less than 1MPa.
After slip casting, leave standstill a period of time, wait injection slurry to solidify the slip casting solidfied material 6 of rear formation some strength, the intensity of slip casting solidfied material 6 is not less than 1MPa.
Step 3: after waiting injection slurry to solidify to form slip casting solidfied material 6, former boring (being instrument connection 3) is carried out to cleaning bottom of hole, the slip casting solidfied material in cleaning instrument connection 3 with geological drilling rig.
Step 4: the hydraulic fracturing geostress measurement equipment such as the interior installation packer 5 of instrument connection 3 and Steel Tube Special 7 after cleaning, to broken or carry out the test of hydraulic fracturing crustal stress compared with fragmented rock body, to obtain the parameter such as instantaneous closing presure and reopening pressure after rock mass fracturing, calculate the stress primitively at test position.
Claims (8)
1. a hydraulic fracturing geostress measurement method that is applicable to fragmented rock body, is characterized in that: comprise the following steps:
(1) from rockmass to broken or compared with setting instrument connection fragmented rock body, described instrument connection from rockmass through broken or compared with fragmented rock body and stretch in rockmass;
(2) Grouting Pipe and packer are installed in boring, to broken or carry out compaction grouting compared with fragmented rock body;
Etc. (3), after injection slurry solidifies, remove the slip casting solidfied material in instrument connection;
(4) hydraulic fracturing geostress measurement equipment is installed in the instrument connection after cleaning, to broken or carry out the test of hydraulic fracturing crustal stress compared with fragmented rock body.
2. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: the degree of depth that in described step (1), instrument connection stretches in rockmass is not less than 1m.
3. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: in described step (1), the bore diameter of instrument connection is 76mm or 108mm.
4. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: the injection slurry in described step (2) adopts cement-silicate slurries.
5. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: the grouting scope in described step (2) is not less than the aperture of 3 times of instrument connections.
6. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: the intensity after the middle injection slurry of described step (3) solidifies is not less than 1MPa.
7. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: broken after compaction grouting or be not more than 1 Lv Rong compared with the permeability rate of fragmented rock body.
8. a kind of hydraulic fracturing geostress measurement method that is applicable to fragmented rock body as claimed in claim 1, is characterized in that: described geostress measurement equipment comprises packer and Steel Tube Special.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104552.6A CN105604547B (en) | 2016-02-25 | 2016-02-25 | A kind of hydraulic fracturing geostress measurement method suitable for fragmented rock body |
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|---|---|---|---|
| CN201610104552.6A CN105604547B (en) | 2016-02-25 | 2016-02-25 | A kind of hydraulic fracturing geostress measurement method suitable for fragmented rock body |
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| CN105604547A true CN105604547A (en) | 2016-05-25 |
| CN105604547B CN105604547B (en) | 2019-03-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445193A (en) * | 2018-06-04 | 2018-08-24 | 东北大学 | The prefabricated system of grouting test containing rock mass with cracks and application method under a kind of excavation stress |
| CN109029796A (en) * | 2018-09-13 | 2018-12-18 | 北京科技大学 | A kind of hydrofracturing detecting earth stress unit protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5745240A (en) * | 1994-05-11 | 1998-04-28 | Essilor International Compagnie Generale D'optique | Method and device for in situ stress measurement within a thin film upon its deposition on a substrate |
| CN102031954A (en) * | 2010-12-30 | 2011-04-27 | 河南理工大学 | Coal and rock bore hydraulic fracture experimental apparatus |
| US20130283925A1 (en) * | 2012-04-06 | 2013-10-31 | David Joshua WHITE | Mobile test system and methods for in situ characterization of stress and deflection dependent stiffness and bearing capacity of soils and geo-materials |
| CN103850678A (en) * | 2012-12-04 | 2014-06-11 | 冯刚 | Hydraulic fracturing ground stress testing system for panoramic drill hole inspection instrument |
| CN104749036A (en) * | 2015-04-01 | 2015-07-01 | 中国电建集团华东勘测设计研究院有限公司 | In-situ rock-mass mechanic test system and in-situ rock-mass mechanic test method |
-
2016
- 2016-02-25 CN CN201610104552.6A patent/CN105604547B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5745240A (en) * | 1994-05-11 | 1998-04-28 | Essilor International Compagnie Generale D'optique | Method and device for in situ stress measurement within a thin film upon its deposition on a substrate |
| CN102031954A (en) * | 2010-12-30 | 2011-04-27 | 河南理工大学 | Coal and rock bore hydraulic fracture experimental apparatus |
| US20130283925A1 (en) * | 2012-04-06 | 2013-10-31 | David Joshua WHITE | Mobile test system and methods for in situ characterization of stress and deflection dependent stiffness and bearing capacity of soils and geo-materials |
| CN103850678A (en) * | 2012-12-04 | 2014-06-11 | 冯刚 | Hydraulic fracturing ground stress testing system for panoramic drill hole inspection instrument |
| CN104749036A (en) * | 2015-04-01 | 2015-07-01 | 中国电建集团华东勘测设计研究院有限公司 | In-situ rock-mass mechanic test system and in-situ rock-mass mechanic test method |
Non-Patent Citations (3)
| Title |
|---|
| 刘允芳: "水压致裂法三维地应力测量", 《岩石力学与工程学报》 * |
| 刘汉东: "《岩土力学》", 30 June 2014, 中央广播电视大学出版社 * |
| 闫富有等: "《地下工程施工》", 31 January 2012, 黄河水利出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445193A (en) * | 2018-06-04 | 2018-08-24 | 东北大学 | The prefabricated system of grouting test containing rock mass with cracks and application method under a kind of excavation stress |
| CN108445193B (en) * | 2018-06-04 | 2020-01-07 | 东北大学 | Grouting test system for prefabricated crack-containing rock mass under excavation stress and use method |
| CN109029796A (en) * | 2018-09-13 | 2018-12-18 | 北京科技大学 | A kind of hydrofracturing detecting earth stress unit protection device |
| CN109029796B (en) * | 2018-09-13 | 2023-11-03 | 北京科技大学 | Protector of hydraulic fracturing ground stress testing device |
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| CN105604547B (en) | 2019-03-05 |
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