CN105651685B - A kind of experimental provision using soil-debris survey shale frictional behavior - Google Patents
A kind of experimental provision using soil-debris survey shale frictional behavior Download PDFInfo
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- CN105651685B CN105651685B CN201510350785.XA CN201510350785A CN105651685B CN 105651685 B CN105651685 B CN 105651685B CN 201510350785 A CN201510350785 A CN 201510350785A CN 105651685 B CN105651685 B CN 105651685B
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Abstract
A kind of experimental provision using soil-debris survey shale frictional behavior, the screw hole that pressure-loaded curved bar passes through on truss is connect with pressure-loaded template, pressure-loaded template and fixed template are clamped intermediate template by being embedded in the landwaste of epoxy resin in sample cell, shearing activity for sample in sample cell provides normal pressure, the displacement sensor being mounted on truss is used to measure the displacement of intermediate template, intermediate template lower end is a flexible steel cable, flexible steel cable passes through limiting stand messenger hole, around manual spiral shell cone, it is then passed through vibration isolation table messenger hole, end ties up on counterweight, flexible steel cable, which is bored, by hand spiral shell pulls intermediate template and counterweight simultaneously, shearing force is provided for intermediate template, the spring being fixed on limiting stand is used for the buffering of the downslide process of intermediate template, it is placed in the data of the electronic scale record counterbalance mass variation immediately below counterweight, electronic scale , displacement sensor and pressure sensor recorded data by the synchronous input computer of data line and store.
Description
Technical field
The present invention relates to shale gas reservoirs to stitch net transformation yield-increasing technology, utilizes soil-debris survey shale especially with regard to a kind of
The experimental provision of frictional behavior.
Background technique
The Efficient Development of shale gas needs to carry out reservoir reconstruction, to form the shale gas channel with flow conductivity, thus
Obtain industrial gas.Unlike conventional gas and oil reservoir, shale gas, which obtains high yield, utmostly reservoir to be activated naturally to split
Shearing slip is stitched and occurred, realizes being mutually communicated between intrinsic fracture.The frictional strength that face is stitched in shale reservoir crack is natural
One of the governing factor that shearing slip seam net in crack is formed.The hydraulic fracturing of reservoir is pumped into a large amount of fracturing fluid, in addition to shale
The Local influence Anlysis of reservoir, which changes, to carry out outside seam, and the interaction of fluid-rock changes the coefficient of friction of fracture faces.
The existing effect for reducing shale reservoir seam face contact rigidity (softening) of fracturing fluid containing drag reducer ingredient, and there is liquid film reduction to rub
The effect of resistance.In addition, the coring difficulty of shale be ground carry out large-scale logistics organizations, simulation hydraulic fracturing come evaluate reservoir at
It is seamed into the restraining factors of net Potential Evaluation.Therefore, the reservoir cuttings evaluation difference fracturing fluid for returning to ground is carried using drilling fluid
The affecting laws of opposite joint face frictional behavior are extremely important.Evaluating apparatus and the evaluation of the function can be achieved not yet both at home and abroad at present
Method, a set of such device of design is very necessary, and shearing slip condition occurs to probe into shale reservoir, is reservoir reconstruction work
Cheng Yingyong provides theoretical foundation.
Summary of the invention
A kind of technical problem to be solved by this invention is to provide a kind of experiment using soil-debris survey shale frictional behavior
Device, the device can measure shale reservoir rock different fluid effect under frictional strength with normal pressure variation relation,
The frictional strength of Study In Reservoir is from the relationship of direct stress, different fracturing fluids to affecting laws of frictional strength etc..In view of pressure break
The conditions such as the complexity of construction site, the device are made every effort to simple and are precisely used, and in-site measurement is facilitated to analyze.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows:
A kind of experimental provision acting on lower rock frictional test intensity using soil-debris survey fracturing fluid, structure includes institute in Fig. 1
The component 1~20 shown.It is characterized in that, vibration isolation table provides stable measuring table, truss thereon for the device on entire top
For the supporting member of whole system, fixed template is fixed by fixed bracket, fixed template and pressure-loaded template are placed in limit
On the platform of position, fixed template is fixedly connected with limiting stand, and pressure-loaded template and limit plate are connectionless, and pressure-loaded curved bar passes through purlin
Screw hole on frame is connect with strain gauge, and pressure sensor is connect with stress loading template, pressure-loaded template and fixed sample
Plate is clamped intermediate template by being embedded in the landwaste of epoxy resin in sample cell, and the shearing activity for sample in sample cell provides just
Pressure, the displacement sensor being mounted on truss are used to measure the displacement of intermediate template, and intermediate template lower end is a flexible steel
Rope, flexible steel cable pass through limiting stand messenger hole, bore around manual spiral shell, are then passed through vibration isolation table messenger hole, and end ties up on counterweight,
In hand spiral shell cone include common screw, increasing diameter screw rod and crank, by shaking crank, drive increasing diameter screw rod to song
Handle opposite direction side is mobile, and flexible steel cable climbs to the diameter augment direction of increasing diameter screw rod, and flexible steel cable is simultaneously in drawing
Between template and counterweight, provide shearing force for intermediate template, be fixed on the downslide process that spring on limiting stand is used for intermediate template
Buffering, be placed in the data of the electronic scale record counterbalance mass variation immediately below counterweight, electronic scale, displacement sensor and pressure pass
Sensor recorded data is by the synchronous input computer of data line and stores.
Design principle of the invention:
The present invention is according to classical friction mechanics principle, by the way of staight scissors.
Beneficial effects of the present invention:
A kind of utilization soil-debris survey shale provided by the invention it can be seen from the design of above-mentioned principle and specific embodiment
The experimental provision of frictional strength has the advantages that device is simple, has good portability, and single unit system does not need servo
The cooperation of hydraulic press, loading curved bar by Rotating Barotropic power can provide normal pressure, is bored by hand spiral shell and realizes adding for shearing force
It carries；Complete rock sample had both can be used in the sample of test, also can use well drilling detritus, and sample shape specification is wanted in test
Ask flexible；The shearing slip of two rubbing surfaces is only existed in test process, frictional force is averaged by the value of two rubbing surfaces and is obtained
, it is as a result more accurate and stable；The load of tangential force can realize fine, slow load by easy device, improve
Experimental precision；It is easy to operate, it can realize that tangential force, displacement and normal pressure, data have computer record simultaneously using the present apparatus
Processing, high degree of automation.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of experimental provision using soil-debris survey shale frictional behavior of the embodiment of the present invention 1, figure
In: 1 computer, 2 data lines, 3 pressure-loaded curved bars, 4 screw holes, 5 pressure sensors, 6 pressure-loaded templates, 7 displacements pass
Sensor, 8 intermediate templates, 9 fixed templates, 10 sample cells, 11 truss, 12 fixed brackets, 13 flexible steel cables, 14 springs, 15 limits
Platform, 16 limiting stand messenger holes, 17 manual spiral shell cones, 18 vibration isolation tables, 19 vibration isolation table messenger holes, 20 counterweights, 21 electronic scales.
Fig. 2 is 10 structural schematic diagram of sample cell in Fig. 1, in figure: 22 landwaste, 23 epoxy resin.
Fig. 3 is that hand spiral shell bores 17 structural schematic diagrams in Fig. 1, in figure: 24 common screws, 25 increasing diameter screw rods, 26 cranks.
Specific embodiment
Embodiment 1
A kind of experimental provision using soil-debris survey shale frictional behavior, structure include component 1 shown in Fig. 1~
20.It is characterized in that, vibration isolation table 18 provides stable measuring table for the device on entire top, truss 11 thereon is entire system
The supporting member of system is fixed fixed template 9 by fixed bracket 12, and fixed template 9 and pressure-loaded template are placed in limiting stand
On 15, fixed template is fixedly connected with limiting stand, and pressure-loaded template and limit plate are connectionless, and pressure-loaded curved bar 3 passes through purlin
Screw hole 4 on frame is connect with pressure sensor 5, and pressure sensor 5 is connect with stress loading template 6, pressure-loaded template 6 and solid
Random sample plate 9 is clamped intermediate template 8 by being embedded in the landwaste 22 of epoxy resin 23 in sample cell 10, is sample in sample cell 10
Shearing activity provides normal pressure, and the displacement sensor 7 being mounted on truss is used to measure the displacement of intermediate template 8, intermediate template 8
Lower end is a flexible steel cable 13, and flexible steel cable 13 passes through limiting stand messenger hole 16, around manual spiral shell cone 17, is then passed through vibration isolation table
Messenger hole 19, end ties up on counterweight, wherein hand spiral shell cone includes common screw 24, increasing diameter screw rod 25 and crank 26, leads to
It crosses shake crank 26, drives the mobile to crank opposite direction side of increasing diameter screw rod 25, flexible steel cable 13 is to increasing diameter spiral shell
The diameter augment direction of bar 26 climbs, and flexible steel cable 13 pulls intermediate template 8 and counterweight 20 simultaneously, provides and cuts for intermediate template 8
Shear force, the spring 15 being fixed on limiting stand are used for the buffering of the downslide process of intermediate template 8, the electronics being placed in immediately below counterweight
Scale 21 records the data of counterbalance mass variation, and electronic scale 21, displacement sensor 7 and 5 recorded data of pressure sensor pass through
The synchronous input computer 1 of data line 2 simultaneously stores.
Of the invention is described in detail with reference to the accompanying drawings and examples:
Step 1: carrying the shale reservoir landwaste for returning to ground in well head acquisition drilling fluid, cleans and screen 10~50 mesh
Landwaste is several, dries to be measured.
Step 2: pouring into appropriate epoxy resin in sample cell, then sample point is spread with 4 sample cells, is gathered simultaneously
By surface be depressed into it is neat protrude from sample cell, polished flat after epoxy resin intensity stabilization with 300 mesh sand paper.To measure not
With the frictional strength under fracturing fluid effect, impregnated for 24 hours sample cell to be placed in fracturing fluid, 48h or longer time.
Step 3: sample cell is mounted on template, guarantee that sample cell is just aligned, applies predetermined normal pressure with screw rod.
Step 4: computer terminal opens software, start synchronous recording displacement, normal pressure and shearing force, crank handle carries out
Shearing force applies.When intermediate template slides to spring retainer stopping downlink, stop data record, Data Analysis Services obtain this positive pressure
The frictional strength of shale under power and the fluid matasomatism.
Claims (3)
1. a kind of experimental provision using soil-debris survey shale frictional behavior, which is characterized in that vibration isolation table is the device of upper part
Stable measuring table is provided, truss thereon is the supporting member of whole device, fixed template fixed by fixed bracket,
The fixed bracket is connected between the truss and the fixed template, and fixed template and pressure-loaded template are placed in limiting stand
On, fixed template is fixedly connected with limiting stand, and the limiting stand is set to the truss, pressure-loaded template and limiting stand without even
It connects；
When pressure-loaded template and fixed template clamp intermediate template, it is embedded into containing in the sample cell of the fixed template
The epoxy resin of landwaste is contacted with the epoxy resin containing landwaste in a sample cell for being embedded into the intermediate template, insertion
To the epoxy resin containing landwaste in another sample cell of the intermediate template and it is embedded into the pressure-loaded template
The epoxy resin contact containing landwaste in sample cell；
The screw hole that pressure-loaded curved bar passes through on truss is connect with pressure sensor, and pressure sensor and pressure-loaded template connect
It connects；The pressure-loaded curved bar provides normal pressure for the shearing activity of sample in sample cell, the displacement sensing being mounted on truss
Device is used to measure the displacement of intermediate template；
Intermediate template lower end is a flexible steel cable, and flexible steel cable passes through limiting stand messenger hole, is wrapped over manual spiral shell cone, is then passed through
Vibration isolation table messenger hole, end tie up on counterweight, wherein manual spiral shell cone includes common screw, increasing diameter screw rod and crank, pass through
Crank is shaken, drives increasing diameter screw rod mobile to crank opposite direction side, flexible steel cable increases to the diameter of increasing diameter screw rod
General orientation is climbed, and flexible steel cable pulls intermediate template and counterweight simultaneously, is provided shearing force for intermediate template, is fixed on limiting stand
Spring for intermediate template downslide process buffering, be placed in immediately below counterweight electronic scale record counterbalance mass variation number
According to electronic scale, displacement sensor and pressure sensor recorded data are by the synchronous input computer of data line and deposit
Storage.
2. a kind of experimental provision using soil-debris survey shale frictional behavior according to claim 1, which is characterized in that sample
Product slot is fixed on template, and interior is rectangular recess, and landwaste is fixed in sample cell by epoxy resin.
3. a kind of experimental provision using soil-debris survey shale frictional behavior according to claim 1, which is characterized in that hand
Increasing diameter screw profile on dynamic spiral shell cone is the screw rod that trapezoidal diameter is gradually increased, and the cumulative screw rod of rotating diameter is wrapped in
The flexible steel cable of increasing diameter screw rod will affect slide unit by pull ring, while draw big mass weight, realize high-precision, slow
Slow tangential force load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350785.XA CN105651685B (en) | 2015-06-24 | 2015-06-24 | A kind of experimental provision using soil-debris survey shale frictional behavior |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350785.XA CN105651685B (en) | 2015-06-24 | 2015-06-24 | A kind of experimental provision using soil-debris survey shale frictional behavior |
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| Publication Number | Publication Date |
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| CN105651685A CN105651685A (en) | 2016-06-08 |
| CN105651685B true CN105651685B (en) | 2018-12-21 |
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| CN201510350785.XA Expired - Fee Related CN105651685B (en) | 2015-06-24 | 2015-06-24 | A kind of experimental provision using soil-debris survey shale frictional behavior |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333071A (en) * | 2018-04-24 | 2018-07-27 | 吉林大学 | A kind of swinging friction and wear test method and test device |
| CN109342184A (en) * | 2018-11-09 | 2019-02-15 | 中国石油天然气集团有限公司 | Testing device, method and system for testing shale characteristics |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2399723Y (en) * | 1999-12-01 | 2000-10-04 | 长沙交通学院公路工程试验检测中心 | Double-jack pulling-drawing friction test appts. |
| CN201673100U (en) * | 2010-05-13 | 2010-12-15 | 桂林电子科技大学 | Experimental device for sliding friction and wear both on dry surface and lubricated surface |
| CN102175599A (en) * | 2011-02-21 | 2011-09-07 | 合肥工业大学 | High-frequency high-specific pressure long-stroke temperature-controllable reciprocating friction test device |
| CN102735821A (en) * | 2012-07-06 | 2012-10-17 | 中国石油大学(北京) | Method and system for testing abrasiveness of rock |
| CN202903654U (en) * | 2012-09-12 | 2013-04-24 | 中冶集团武汉勘察研究院有限公司 | Testing device for friction coefficient of contact surface between pile and soil or between open caisson wall and soil or between tailings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100107726A1 (en) * | 2008-10-31 | 2010-05-06 | Mitsubishi Materials Corporation | Device for determining the coefficient of friction of diamond conditioner discs and a method of use thereof |
-
2015
- 2015-06-24 CN CN201510350785.XA patent/CN105651685B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2399723Y (en) * | 1999-12-01 | 2000-10-04 | 长沙交通学院公路工程试验检测中心 | Double-jack pulling-drawing friction test appts. |
| CN201673100U (en) * | 2010-05-13 | 2010-12-15 | 桂林电子科技大学 | Experimental device for sliding friction and wear both on dry surface and lubricated surface |
| CN102175599A (en) * | 2011-02-21 | 2011-09-07 | 合肥工业大学 | High-frequency high-specific pressure long-stroke temperature-controllable reciprocating friction test device |
| CN102735821A (en) * | 2012-07-06 | 2012-10-17 | 中国石油大学(北京) | Method and system for testing abrasiveness of rock |
| CN202903654U (en) * | 2012-09-12 | 2013-04-24 | 中冶集团武汉勘察研究院有限公司 | Testing device for friction coefficient of contact surface between pile and soil or between open caisson wall and soil or between tailings |
Non-Patent Citations (1)
| Title |
|---|
| "气体钻井环空岩屑颗粒碰撞对井壁稳定性的影响";高如军等;《钻井液与完井液》;20070930;全文 * |
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| CN105651685A (en) | 2016-06-08 |
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