CN201724866U - Device for measuring rock fracture toughness on deep stratum - Google Patents
Device for measuring rock fracture toughness on deep stratum Download PDFInfo
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- CN201724866U CN201724866U CN201020283560XU CN201020283560U CN201724866U CN 201724866 U CN201724866 U CN 201724866U CN 201020283560X U CN201020283560X U CN 201020283560XU CN 201020283560 U CN201020283560 U CN 201020283560U CN 201724866 U CN201724866 U CN 201724866U
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- sample plug
- fracture toughness
- pressure cap
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Abstract
The utility model relates to a device for measuring rock fracture toughness on a deep stratum, which comprises a bearing cylinder. The two ends of the bearing cylinder are respectively provided with a press cap, a hollow rubber tube is arranged in the bearing cylinder, the bearing cylinder and the rubber tube form an annular compression chamber, and the two ends of the rubber tube are respectively connected with the left press cap and the right press cap at the two ends of the bearing cylinder; a left sample plug penetrates through the left press cap and is connected with the left press cap through threads, a right sample plug penetrates through the right press cap and is connected with the right press cap through threads, and the left sample plug, the rubber tube and the right sample plug form a sample accommodating chamber with an adjustable length; and the left sample plug is provided with an axial injection channel, and the bearing cylinder is provided with a compression injection hole. The utility model can simulate the pressure and temperature of the stratum in the indoor environment, and can test the rock fracture toughness of various stratums under conditions with the certain pressure and certain temperature.
Description
Technical field
The utility model belongs to the rock mechanics testing tool in fields such as being mainly used in rock mechanics engineering, petroleum engineering, be a kind of device of testing the rock fracture toughness under the lab simulation engineering specifications, what be specifically related to is a kind of device of measuring deep formation rock fracture toughness.
Background technology
The rock fracture toughness is to judge whether the crack enters an index of instability status, is the important parameter in the waterfrac treatment design.Present situation from present China Petroleum, most geologic conditions have entered development late stage in the oil field preferably, and the high water-cut development stage in having entered, stable yields and the difficulty of taping the latent power are more and more big, therefore thin, in, the low permeability reservoir exploitation of difference received people's very big concern.Hydraulic fracturing technology has been widely used in the exploitation in low-permeability oil gas field as the major measure of oil-water well increasing yield and injection.Can effectively improve near the shaft bottom seepage flow condition by waterfrac treatment, improve oil well productivity.Simulate the environmental quality of deep formation exactly, apace, and the fracture toughness of mensuration rock is an important content that correctly carries out the waterfrac treatment design.But the rock fracture toughness value of conventional rock fracture toughness proving installation under can only measuring cell greenhouse press strip spare do not reflect the rock fracture toughness under the formation condition basically.
Summary of the invention
The purpose of this utility model provides a kind of device of measuring deep formation rock fracture toughness, and it is used to solve the problem of the rock fracture toughness of conventional rock fracture toughness proving installation under can only measuring cell greenhouse press strip spare.
The technical scheme that its technical matters that solves the utility model adopts is: the device of this mensuration deep formation rock fracture toughness comprises that two ends are equipped with the pressure cylinder of pressure cap, place the rubber tube of hollow in the pressure cylinder, the confined pressure chamber of looping between pressure cylinder and the rubber tube, the two ends of rubber tube are connected with the left and right pressure cap at pressure cylinder two ends respectively; Left side sample plug passes left pressure cap, and the two is threaded, and right sample plug passes right pressure cap, and the two is threaded, and left sample plug, rubber tube, right sample plug constitute length-adjustable sample placed cavity; Left side sample has axial reservoir channel beyond the Great Wall, and the confined pressure filling orifice is arranged on the pressure cylinder.
Left pressure cap is fixing on pressure cylinder by left end socket in the such scheme, left side end socket is threaded with pressure cylinder, right pressure cap is fixed on the pressure cylinder by the pressure cap connector, and the pressure cap connector is threaded with pressure cylinder, and right end socket is threaded with the pressure cap connector.
Right sample plug passes the pressure cap connector and is connected with joint screw thread with right end socket in the such scheme, and joint is threaded with right end socket.
The utlity model has following beneficial effect:
1, when the utility model is used for the test of rock fracture toughness, at first formation rock is made both samples of sizing, the rock sample that processes is placed in the utility model, confined pressure control system by the outside, heating system provides test needed pressure for rock sample, temperature environment, fracturing liquid reinjects, with the rock sample pressure break, can gather various experimental datas, obtain rock fracture toughness value, as seen, by using the utility model, can go out the pressure and the temperature conditions on stratum at lab simulation, and test various formation rocks at certain pressure, rock fracture toughness under the temperature.
2, the utility model test specification is wide, can improve testing efficiency and test result precision.
3, the utility model is easy to use, test period is short, expense is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the new middle structural representation of placing sample of this practicality.
1 left sample plug 2 left pressure cap 3 left end socket 4 pressure cylinder 5T shape pressure break rubber tubes 6 rubber tubes 7 samples 8 pressure cap connectors 9 right sample plug 10 right end socket 11 joints 12 reservoir channels confined pressure chambers 13,14 right pressure cap 15 confined pressure filling orifices 16 sample placed cavities
Embodiment
In conjunction with the accompanying drawings the utility model is described further:
As shown in Figure 1 and Figure 2, the device of this mensuration deep formation rock fracture toughness is made up of pressure cylinder 4, left sample plug 1, left pressure cap 2, left end socket 3, rubber tube 6, pressure cap connector 8, right sample plug 9, right end socket 10, joint 11, reservoir channel 12, confined pressure chamber 13, right pressure cap 14, confined pressure filling orifice 15.Pressure cylinder 4 is heavy wall hollow tubes that have confined pressure filling orifice 15, its left end is installed left pressure cap 2, right-hand member is equipped with right pressure cap 14, place the rubber tube 6 of hollow in the pressure cylinder 4, the confined pressure chamber 13 of looping between pressure cylinder 4 and the rubber tube 6, can in confined pressure chamber 13, inject hydraulic oil by confined pressure filling orifice 15, rock sample 7 simulations that install in the rubber tube 6 are applied the stratum confined pressure; The two ends of rubber tube 6 are connected with the left and right pressure cap at pressure cylinder two ends respectively, and rubber tube 6 is realized sealing between pressure cylinder 4 and the rubber tube 6 under the extruding of left pressure cap 2 and right pressure cap 14; Left side pressure cap 2 is fixing on pressure cylinder 4 by left end socket 3, a left side end socket 3 and pressure cylinder 4 are by being threaded, right pressure cap 14 is fixed on the pressure cylinder 4 by pressure cap connector 8, pressure cap connector 8 is connected with pressure cylinder 4 by screw thread, right end socket 10 is used screwed connection with pressure cap connector 8, and joint 11 is threaded with right end socket 10 usefulness; Left side sample plug 1 passes left pressure cap 2, left side sample plug 1 is connected with left pressure cap 2 by screw thread, right sample plug 9 passes right pressure cap 14, pressure cap connector 8, right end socket 10, joint 11, right sample plug 9 respectively with right pressure cap 14, pressure cap connector 8, right end socket 10, joint 11 by being threaded; Left side sample plug 1, rubber tube 6, right sample plug 9 constitute sample placed cavity 16, and by rotating left sample plug 1 and right sample plug 9, two sample plugs of scalable stretch into the degree of depth of rubber tube 6, to regulate the length of sample placed cavity 16; On the left side sample plug 1 axial reservoir channel 12 is arranged, rock sample 7 also is provided with in advance and portals, and T shape pressure break rubber tube 5 is packed in this hole, injects fracturing liquid by reservoir channel 12 in T shape pressure break rubber tube 5.
During use, the utility model is at first according to the length of rock sample, right sample plug 9 is adjusted to the appropriate location, if sample is longer, right sample plug 9 is regulated to the right, if sample is shorter, then regulate left, make sample be in the core of rubber tube 6 as far as possible, the sample 7 that will install T shape pressure break rubber tube 5 is afterwards put in the rubber tube 6 in the pressure cylinder 4, left sample plug 1 usefulness screw thread is installed on the left pressure cap 2, up to sample 7 being fixed on left sample plug 1, among right sample plug 9 and the rubber tube 6, inject hydraulic oil from the confined pressure chamber 13 of confined pressure filling orifice 15 between pressure cylinder 4 and rubber tube 6, for test sample provides the stratum confined pressure, it is fixed that the size of confined pressure is come according to the demand of test, behind the confined pressure value stabilization, use outside constant temperature oven to give device and the whole loading of sample, reach the testing requirements position up to specimen temperature, inject fracturing liquid by reservoir channel 12 to T shape pressure break rubber tube 5 more at last, cracked up to sample 7, record injection pressure at this moment, after device and sample cooling in the constant temperature oven, regulate left sample plug 1 left, more left end socket is disassembled from pressure cylinder 4, by left pressure cap 2 sample is extracted, finish testing experiment.
Claims (3)
1. device of measuring deep formation rock fracture toughness, it is characterized in that: the device of this mensuration deep formation rock fracture toughness comprises that two ends are equipped with the pressure cylinder of pressure cap (4), place the rubber tube (6) of hollow in the pressure cylinder (4), the confined pressure chamber (13) of looping between pressure cylinder (4) and the rubber tube (6), the two ends of rubber tube (6) are connected with the left and right pressure cap at pressure cylinder (4) two ends respectively; Left side sample plug (1) passes left pressure cap (2), and the two is threaded, and right sample plug (9) passes right pressure cap (14), and the two is threaded, and left sample plug (1), rubber tube (6), right sample plug (9) constitute length-adjustable sample placed cavity (16); On the left side sample plug (1) axial reservoir channel (12) is arranged, confined pressure filling orifice (15) is arranged on the pressure cylinder (4).
2. the device of mensuration deep formation rock fracture toughness according to claim 1, it is characterized in that: described left pressure cap (2) is gone up fixing by left end socket (3) at pressure cylinder (4), left side end socket (3) is threaded with pressure cylinder (4), right pressure cap (14) is fixed on the pressure cylinder (4) by pressure cap connector (8), pressure cap connector (8) is threaded with pressure cylinder (4), and right end socket (10) is threaded with pressure cap connector (8).
3. the device of mensuration deep formation rock fracture toughness according to claim 2, it is characterized in that: described right sample plug (9) passes pressure cap connector (8) and right end socket (10) is threaded with joint (11), and joint (11) is threaded with right end socket (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020283560XU CN201724866U (en) | 2010-08-06 | 2010-08-06 | Device for measuring rock fracture toughness on deep stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020283560XU CN201724866U (en) | 2010-08-06 | 2010-08-06 | Device for measuring rock fracture toughness on deep stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201724866U true CN201724866U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020283560XU Expired - Fee Related CN201724866U (en) | 2010-08-06 | 2010-08-06 | Device for measuring rock fracture toughness on deep stratum |
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| CN (1) | CN201724866U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760028A (en) * | 2014-01-07 | 2014-04-30 | 洛阳理工学院 | Confining pressure loading device for laboratory rock strength |
| CN105115824A (en) * | 2015-09-18 | 2015-12-02 | 河南理工大学 | Rock confining pressure loading and unloading testing device |
| CN105628507A (en) * | 2016-02-05 | 2016-06-01 | 四川大学 | Hydraulic fracturing test apparatus based on conventional testing machine for rock mechanics, rock specimen and hydraulic fracturing testing method |
| CN106872284A (en) * | 2015-12-10 | 2017-06-20 | 中国石油化工股份有限公司 | Device and method for detecting rock toughness under simulation stratum condition |
| CN108104786A (en) * | 2017-12-24 | 2018-06-01 | 东北石油大学 | A kind of shale pressure break simulating lab test device |
| CN108457645A (en) * | 2018-03-08 | 2018-08-28 | 长江大学 | Coal gas layer nitrogen circulation is handled up pressure break feasibility assessment device |
| CN110595903A (en) * | 2019-10-09 | 2019-12-20 | 中国石油大学(北京) | Rock fracture testing device |
| CN112858022A (en) * | 2021-01-19 | 2021-05-28 | 中南大学 | Device and method for measuring fracture toughness of high-temperature rock by using hydraulic fracturing method |
| CN115420615A (en) * | 2022-10-21 | 2022-12-02 | 苏州洽盈自动化科技有限公司 | Double-station isostatic pressing test machine |
-
2010
- 2010-08-06 CN CN201020283560XU patent/CN201724866U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760028A (en) * | 2014-01-07 | 2014-04-30 | 洛阳理工学院 | Confining pressure loading device for laboratory rock strength |
| CN105115824A (en) * | 2015-09-18 | 2015-12-02 | 河南理工大学 | Rock confining pressure loading and unloading testing device |
| CN105115824B (en) * | 2015-09-18 | 2018-11-16 | 河南理工大学 | A kind of rock confining pressure adds unloading test device |
| CN106872284A (en) * | 2015-12-10 | 2017-06-20 | 中国石油化工股份有限公司 | Device and method for detecting rock toughness under simulation stratum condition |
| CN106872284B (en) * | 2015-12-10 | 2019-11-05 | 中国石油化工股份有限公司 | For detecting the device and method of rock toughness under simulation stratum condition |
| CN105628507A (en) * | 2016-02-05 | 2016-06-01 | 四川大学 | Hydraulic fracturing test apparatus based on conventional testing machine for rock mechanics, rock specimen and hydraulic fracturing testing method |
| CN105628507B (en) * | 2016-02-05 | 2018-07-03 | 四川大学 | The device of realization hydraulic fracturing experiments and rock sample and method in conventional rock mechanics experiment machine |
| CN108104786B (en) * | 2017-12-24 | 2021-04-06 | 东北石油大学 | Shale fracturing indoor simulation experiment device |
| CN108104786A (en) * | 2017-12-24 | 2018-06-01 | 东北石油大学 | A kind of shale pressure break simulating lab test device |
| CN108457645A (en) * | 2018-03-08 | 2018-08-28 | 长江大学 | Coal gas layer nitrogen circulation is handled up pressure break feasibility assessment device |
| CN110595903B (en) * | 2019-10-09 | 2020-06-30 | 中国石油大学(北京) | Rock fracture testing device |
| CN110595903A (en) * | 2019-10-09 | 2019-12-20 | 中国石油大学(北京) | Rock fracture testing device |
| CN112858022A (en) * | 2021-01-19 | 2021-05-28 | 中南大学 | Device and method for measuring fracture toughness of high-temperature rock by using hydraulic fracturing method |
| CN115420615A (en) * | 2022-10-21 | 2022-12-02 | 苏州洽盈自动化科技有限公司 | Double-station isostatic pressing test machine |
| CN115420615B (en) * | 2022-10-21 | 2023-03-24 | 苏州洽盈自动化科技有限公司 | Double-station isostatic pressing test machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20120806 |