CN104677815B - True triaxial Rock parameter measurement system - Google Patents

True triaxial Rock parameter measurement system Download PDF

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Publication number
CN104677815B
CN104677815B CN201510099996.0A CN201510099996A CN104677815B CN 104677815 B CN104677815 B CN 104677815B CN 201510099996 A CN201510099996 A CN 201510099996A CN 104677815 B CN104677815 B CN 104677815B
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China
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axis
piston
rock
charging assembly
pressure chamber
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CN201510099996.0A
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Chinese (zh)
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CN104677815A (en
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陈健
陈一健
李皋
李新
张伦平
许秀斌
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西南石油大学
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Abstract

The invention discloses a kind of true triaxial Rock parameter measurement system, it is related to oil, gas reservoir assessment technique field.This test system includes rock load maintainer, load maintainer rotating lifting gear and detecting and controlling system.Rock load maintainer includes X, Y, Z axis charging assembly, rock core gum cover and pressure chamber kettle, and described load maintainer rotating lifting gear includes lifting hydraulic cylinder, reducer of turbodrill and dismountable mechanical handss;Rock load maintainer is connected with detecting and controlling system with control pipeline with the test in load maintainer rotating lifting gear.The present invention can test the mechanical property of formation sample under high-temperature and high-pressure conditions, acoustical behavior, electric property and seepage flow performance under the triaxial pressure not waited simultaneously, has small volume, feature vdiverse in function, safe and reliable.

Description

True triaxial Rock parameter measurement system

Technical field

The present invention relates to being related to oil, gas reservoir assessment technique field, more particularly, to a kind of true triaxial Rock parameter measurement system System.

Background technology

Due to typically being acted on by triaxiality under rock mass in the original location state, thus rock under the conditions of laboratory research triaxiality The mechanical property of body, electric property, acoustical behavior and seepage flow performance more can reflect the practical situation of natural geology rock mass.Anisobaric The impact to rock deformation intensity for the intermediate principal stress under triaxial state of stress, before all rock mass engineering project field is explored all the time One of along problem, to simulate the mechanical behaviors of rocks under anisobaric condition of triaxial stress for this conventional true triaxial test machine.

At present, existing true triaxial test machine is mostly used for evaluating the mechanical behavior of ground, and for petroleum gas row Industry, applies the mutually orthogonal load in three directions to rock for convenience, and rock sample is generally processed into square or rectangular Body, using x, the mutually orthogonal loading unit composition true triaxial loading system in tri- directions of y, z.

According to load mode and pressure chamber structure feature, true triaxil tester can be divided into rigid plate to load, flexible bags load and multiple Close and load three types.Rigid plate is loaded as sample and is arranged between six rigid plate, when in three stress directions applying pressure When, sample can produce corresponding principal strain, though this kind of load mode accurate measurement can strain, can produce homogeneous strain, reach relatively The complicated ess-strain path of big axial strain, simulation, it can be difficult to the inhomogeneities of inspection stress, and when strain is larger When, can produce between load plate and interfere it is impossible to carry out predetermined stress path tests.Flexible bags are loaded as all by hydraulic pressure System controls three principal stresses, applies hydraulic pressure by rubber pocket to sample, the no obvious border interference of this load mode, can press Predetermined complicated stress environment is tested, measurement deformation, but when not taking extraordinary precaution, also can produce border and do Disturb, if being not added with special lubricant method, difficult to reach homogeneous strain, the normal direction only passing through progressively correcting in plane is answered Power, can be only achieved plane strain condition.Combined Loading, using rigid press mold other directions is pressed using flexible in some directions Film, using rigid boundary as compression direction, the flexible boundary of Stress Control is stretched direction and can be exempted border interference as squeezing, if predetermined Experiment face become a certain fixed-direction with instrument shaft, then can be tested by stress path or strain paths, but predetermined answering Miscellaneous stress path tests are difficult to or may not carry out, and in rigid plate and flexible board, normal stress field and strain field is equal Even property is difficult to determine.

In the prior art, CN103207114A discloses a kind of three-dimensional and rigidly loads rock true triaxil tester, and it rigidly adds Support plate using hard and soft mixing pressure sheet although it can be avoided that between load plate interfere with sample deformation after be subject to lateral Interference, but the flexure strip on hard and soft mixing pressure sheet and cube rigidity fast between docking site adopt the bondings such as seccotine Together, if during stress loading, rock sample end face Stress non-homogeneity is it is easy to cause abutting edge damaged;Under high temperature, Abutting edge is easy to fall off, and therefore this device can not carry out hot test;And the pressure-bearing of flexure strip is limited in scope, monoblock is caused to load The loading stress of plate limited it is impossible to carry out the test under condition of high ground stress;In addition, the rigid load plate in six faces of rock sample is no Method seals sample, and the rigid load plate of surrounding is also provided without insulation measures, and therefore this device cannot be carried out Seepage Experiment, and not The electric property of energy test sample.

CN101701887A discloses a kind of multifunctional triaxial core clamper device, and this device adopts the liquid of quality of rubber materials Pressure capsule loads, and hydraulic bag is placed in four relative grooves in main body, and groove is in " ten " font on cross section, hydraulic bag it Between separated by the chamfering between adjacent grooves, this hydraulic bag processing technique is complicated, high cost.The flexible load mode of design The uniformity straining cannot be ensured, when three-dimensional stress difference is larger, the hydraulic bag meeting compressive deformation of quality of rubber materials is through groove Chamfering flows in adjacent groove, and when stress is larger, chamfering easily pierces through hydraulic bag.CN101761333A discloses a kind of many work( Energy true triaxial stress cinder heart clamp holder, this device adopts Combined Loading mode, is cased with gum cover, can carry out seepage tests outside sample, But Y-axis pressure plunger acts directly on the gum cover outside sample, bearing capacity limited it is impossible to carry out heavily stressed under test.Y Axle pressure plunger end face does not take any insulation measures, thus this device cannot test sample electric property.United States Patent (USP) US3728895 discloses a kind of three-dimensional compression verification device, and this device is loaded using rigidity, and sample is placed on metal rectangular main body In middle space, six metal rigidity module insertions lead in the opening in main body space with rock core directly contact, metal rigidity Module is fixed in rectangular body by screw rod, and bearing capacity is low, can only do the mechanical test under low stress, additionally, this device Seepage flow performance, electric property and the acoustical behavior of sample under triaxial pressure can not be tested.

The above four class triaxial apparatus all can not carry out under meeting condition of triaxial stress simultaneously High Temperature High Pressure seepage tests, Electrical performance testing, Mechanics Performance Testing and acoustics performance test.And in domestic triaxial apparatus design, triaxial apparatus each to plus Carrying to put all stretches to outside triaxial apparatus main body, and this method for designing increases plant bulk, and device seems heavy and is difficult to operate.

Content of the invention

The technical problem to be solved is to provide a kind of true triaxial Rock parameter measurement system, described test system The mechanical property of rock, acoustical behavior, electric property can be tested under high-temperature and high-pressure conditions simultaneously and ooze under the triaxial pressure such as not Fluidity energy.

For solving above-mentioned technical problem, the technical solution used in the present invention is:A kind of true triaxial Rock parameter measurement system System it is characterised in that:Described test system includes rock load maintainer, load maintainer rotating lifting gear and detection and controls system System, described rock load maintainer is connected on described rotating lifting gear, high for testing under the triaxial pressure not waited simultaneously The mechanical property of formation sample, acoustical behavior, electric property and seepage flow performance under warm condition of high voltage;Described rotating lifting gear is used Rotated and elevating movement in driving described rock load maintainer;Rock load maintainer and load maintainer rotating lifting gear Interior electricity component is attached with described detecting and controlling system, and described detecting and controlling system is used for loading machine by described rock Structure acts on to formation sample, the Parameters variation of collection formation sample, and controls described rotating lifting gear to drive described rock Stone load maintainer does and rotates and elevating movement.

Further technical scheme is:Described rock load maintainer includes pressure chamber, X-axis, Y-axis, Z axis charging assembly with And rock core gum cover, positioned at described pressure interior, described X-axis, Y-axis, Z axis charging assembly are each for described X-axis, Y-axis, Z axis charging assembly It is provided with two, is located at the front, back, left, right, up, down side of described formation sample respectively, described X-axis charging assembly adds before including X-axis Carry charging assembly after assembly and X-axis, line of symmetry is configured and structure is identical centered on Y-axis, charging assembly and X-axis before X-axis Charging assembly includes X-axis and loads piston afterwards, X-axis load piston be provided with the pressure transducer of X-axis, displacement transducer and with pressure Power displacement measurement line;Described Y-axis charging assembly includes the left charging assembly of Y-axis and the right charging assembly of Y-axis, symmetrical centered on X-axis Line is configured and structure is identical, and the left charging assembly of Y-axis and the right charging assembly of Y-axis include Y-axis and load piston and piston base, institute State Y-axis and load pressure transducer, displacement transducer, pressurized control line and the line pressure shift p-wire that piston is provided with Y-axis;Institute State Z axis charging assembly and include charging assembly under charging assembly and Z axis on Z axis, under described Z axis, charging assembly includes Z axis and load living Plug, is fixed on the base of pressure chamber, and on described Z axis, charging assembly includes Z axis loading piston and piston base, and described Z axis add Carry pressure transducer, displacement transducer, pressurized control line, line pressure shift p-wire and the permeability survey that piston is provided with Z axis Examination line;The center of described rock core gum cover is coffin, and for placing formation sample, rock core gum cover is along six faces of formation sample It is respectively equipped with an opening, the external shape that the shape of opening loads piston with X-axis, Y-axis, Z axis is adapted, and loads piston and extend into In the opening in each face, opening is blocked;X-axis loads piston and Y-axis loads the end face of piston by ceramic gasket and rock stratum The front, rear, left and right side of sample contacts, and the loading piston of Z axis is provided with piezoelectric ceramics, and pressure interior is filled with hydraulic oil, Confined pressure pressurized pipeline is provided with pressure chamber, in load maintainer, all of pipeline, p-wire and data acquisition line are all through overvoltage Pressure outdoor guided to by the manhole of power room bottom, is connected with detecting and controlling system.

Further technical scheme is:Described X-axis loads piston, Y-axis loads on charging assembly under piston and Z axis It is cuboid that Z axis load piston near the part of formation sample, and the part being connected with cuboid is cylinder, cuboid and rock stratum The catercorner length of end face of sample contact is identical with cylindrical diameter;It is close that Z axis on charging assembly on Z axis load piston The part of formation sample be cuboid, middle part be cylinder, the catercorner length of the end face that cuboid contacts with formation sample and Cylindrical diameter is identical, and bottom is the diameter cylinder bigger than the cylindrical diameter in middle part.

Further technical scheme is:The face that the piston base of Y-axis on described Y-axis charging assembly is contacted with pressure chamber For circular arc camber, it is adapted with the inwall of pressure chamber, the diameter of circular arc camber is identical with pressure chamber kettle internal diameter.

Further technical scheme is:The surrounding of described ceramic gasket carries out chamfered;

Further technical scheme is:The outer surface of described ceramic gasket posts elastica.

Further technical scheme is:Described pressure chamber includes pressure chamber base and pressure chamber kettle, described pressure chamber Whorl of base is connected to the bottom of described pressure chamber kettle.

Further technical scheme is:The side wall of described pressure chamber kettle is provided with heating tube and cooling water channel.

Further technical scheme is:Described rotating lifting gear include support, lifting hydraulic cylinder, reducer of turbodrill and Dismountable mechanical handss, described lifting hydraulic cylinder, reducer of turbodrill and dismountable mechanical handss are fixing on the bracket, described lifting The clutch end of hydraulic cylinder and reducer of turbodrill is connected with pressure chamber.

Further technical scheme is:Two lip blocks are provided with the Y-axis of pressure chamber base, for supporting Y-axis Load piston.

Have the beneficial effects that using produced by technique scheme:1st, described test system can be under high-temperature and high-pressure conditions Rock is carried out with mechanical property under triaxial stress, electric property, acoustical behavior and seepage flow performance test simultaneously;2nd, pacify on kettle Equipped with heating tube and cooling water circulation water channel from the beginning, heating assembly can be heated and control of being lowered the temperature;3rd, use rock core gum cover, The loading piston rod on formation sample and loading piston, the hydraulic oil of isolation formation sample and pressure interior can be sealed;4、X、 Equipped with pressure transducer and displacement transducer on Y, Z axis charging assembly, formation sample three-dimensional stress, strain can be tested;5、X、Y The loading piston rod end face of axle charging assembly, equipped with corundum ceramic pad, plays insulating effect, enables test system to test rock The electric property of layer sample;6th, the piston cylinder end-face circular design that loads of Y-axis charging assembly improves holding of pressure chamber kettle Pressure energy power;7th, the chamfered of corundum ceramic pad end face, can eliminate present in rigid load mode between charger Interfere;8th, process of the test, corundum ceramic pad end face posts elastica, can prevent in flow event fluid from rock sample with The contact position channelling of corundum ceramic pad;9th, Z axis charging assembly, equipped with piezoelectric ceramic piece, can test the acoustics of formation sample Energy;10th, whole test system is completely placed in pressure interior, and kettle base is drilled with through hole, the testing tube of whole charging assembly Line data collection pipeline can be guided to outside kettle by through hole, reduces the volume of device;11st, load maintainer rotating lifting gear Make the easier for installation of pressure chamber and charging assembly.

Brief description

The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.

Fig. 1 is the theory diagram of the present invention;

Fig. 2 is X-axis in the present invention, Y-axis, the explosive view of Z axis charging assembly;

Fig. 3 is the cross section structure diagram along Y direction for the rock load maintainer;

Fig. 4 is the overlooking the structure diagram of rock load maintainer;

Fig. 5 is the structural representation of rock load maintainer and described lift rotating equipment;

Wherein:1st, rock load maintainer 2, load maintainer rotating lifting gear 3, detecting and controlling system 4, X-axis loading group Part 5, Y-axis charging assembly 6, Z axis charging assembly 7, rock core gum cover 8, formation sample 9, piston base 10, loading piston 11st, displacement transducer 12, pressurized control line 13, line pressure shift p-wire 14, ceramic gasket 15, permeability p-wire 16, Lip block 17, pressure chamber base 18, pressure chamber kettle 19, sealing ring 20, heating tube 21, cooling water channel 22, support 23rd, lifting hydraulic cylinder 24, reducer of turbodrill 25, dismountable mechanical handss 26, confined pressure pressurized pipeline.

Specific embodiment

With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.

Elaborate a lot of details in the following description in order to fully understand the present invention, but the present invention is acceptable To be implemented different from alternate manner described here using other, those skilled in the art can be without prejudice to intension of the present invention In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.

Front, back, left, right, up, down of the present invention illustrates with respect to Fig. 2.

As shown in figure 1, the invention discloses a kind of true triaxial Rock parameter measurement system, described test system includes rock Load maintainer 1, load maintainer rotating lifting gear 2 and detecting and controlling system 3.Described rock load maintainer 1 is connected to described On rotating lifting gear, for testing the mechanical property of formation sample under high-temperature and high-pressure conditions under the triaxial pressure not waited simultaneously Energy, acoustical behavior, electric property and seepage flow performance;Described rotating lifting gear is used for driving described rock load maintainer 1 to carry out Rotation and elevating movement;Electricity component in rock load maintainer 1 and load maintainer rotating lifting gear 2 and described detection control System 3 processed is attached, and described detecting and controlling system 3 is used for by described rock load maintainer 1, formation sample being acted on, Gather the Parameters variation of formation sample, and control described rotating lifting gear to drive described rock load maintainer 1 to do and rotate and rise Fall motion.

Further, as in Figure 2-4, described rock load maintainer 1 includes pressure chamber, X-axis, Y-axis, Z axis charging assembly 4,5,6 and rock core gum cover 7, described pressure chamber includes pressure chamber base 17 and pressure chamber kettle 18.Described pressure chamber base 17 It is threadedly connected to the bottom of described pressure chamber kettle 18, between pressure chamber base 17 and pressure chamber kettle 18, be provided with sealing ring 19, Base center has a circular groove, and groove size is identical with the loading piston size of charging assembly under Z axis.Loading group under Z axis The loading piston of part can be fixed in groove, and base center also has a cylindrical hole, the test of whole charging assembly Pipeline data collection pipeline can guide to pressure outdoor by through hole, and pressure chamber base is provided with confined pressure pressurized pipeline, to give Pressure chamber refuels and presses.

Further, as in Figure 2-4, described X-axis, Y-axis, Z axis charging assembly 4,5,6 are located at described pressure interior, institute State X-axis, Y-axis, Z axis charging assembly 4,5,6 are respectively provided with two, be located at the front, back, left, right, up, down of described formation sample 8 respectively Side, described X-axis charging assembly 4 includes charging assembly after charging assembly and X-axis before X-axis, and centered on Y-axis, line of symmetry is configured And structure is identical, after charging assembly and X-axis before X-axis, charging assembly includes X-axis and loads piston, and X-axis loads piston and is provided with X-axis Pressure transducer, displacement transducer 11 and with line pressure shift p-wire 13;Described Y-axis charging assembly 5 includes Y-axis left loading group Part and the right charging assembly of Y-axis, centered on X-axis, line of symmetry is configured and structure is identical, and the left charging assembly of Y-axis and the Y-axis right side add Carry assembly and include Y-axis loading piston and piston base 9, described Y-axis loads piston and is provided with the pressure transducer of Y-axis, displacement biography Sensor 11, pressurized control line 12 and line pressure shift p-wire 13;Described Z axis charging assembly 6 includes charging assembly and Z on Z axis Charging assembly under axle, under described Z axis, charging assembly includes Z axis loading piston, is fixed on the base of pressure chamber, on described Z axis Charging assembly includes Z axis and loads piston and piston base 9, and described Z axis load piston and are provided with the pressure transducer of Z axis, displacement Sensor 11, pressurized control line 12, line pressure shift p-wire 13 and permeability p-wire 15.

Stress on X axis is provided by the oil pressure in pressure chamber kettle, and Y-axis and Z axis stress upwards needs individually to load. Further, the Z axis that described X-axis loads piston, Y-axis loads on charging assembly under piston and Z axis load piston near rock stratum The part of sample 8 is cuboid, and the part being connected with cuboid is cylinder, the end face that cuboid is contacted with formation sample 8 Catercorner length is identical with cylindrical diameter;Z axis on charging assembly on Z axis load the part near formation sample 8 for the piston For cuboid, middle part is cylinder, the catercorner length of the end face that cuboid is contacted with formation sample 8 and cylindrical diameter phase With bottom is the diameter cylinder bigger than the cylindrical diameter in middle part.The piston base 9 of the Y-axis on described Y-axis charging assembly with The face of pressure chamber contact is circular arc camber, is adapted with the inwall of pressure chamber, in the diameter of circular arc camber and pressure chamber kettle 18 Footpath is identical, so that the piston base of Y-axis can preferably contact after moving to pressure chamber kettle inner circumferential wall in pressure process, Increase the piston base end face of Y-axis and the contact area of pressure chamber kettle inner circumferential wall, reduce pressure chamber kettle bears pressure.

Pressurized control line on Y-axis charging assembly is arranged on Y-axis and loads piston cylinder side.The loading of charging assembly under Z axis Piston is arranged in pressure chamber base;The piston base size of Z axis is bigger relative to the piston base size of Y-axis, the piston bottom of Z axis Seat end face is smooth circle, Z axis piston base and pressure chamber kettle upper end contact internal walls after Z-direction stress loading, more greatly Size design reduce pressure chamber kettle upper end inwall bear pressure;Pressurization control in the end face center of Z axis piston base Line processed is drawn and can also be drawn from pressure chamber bottom via the opening on pressure chamber kettle.

The center of described rock core gum cover 7 is coffin, and for placing formation sample 8, rock core gum cover 7 is along formation sample 8 Six faces be respectively equipped with an opening, the external shape that the shape of opening loads piston with X-axis, Y-axis, Z axis is adapted, and loads and lives Plug extend in the opening in each face that is to say, that the open interior of rock core gum cover 7 is rectangle, and outside is cylindrical, makes each Load plunger to be tightly connected with rock core gum cover 7;X-axis load piston and Y-axis load piston end face pass through ceramic gasket 14 with The front, rear, left and right side of formation sample 8 contacts, and the loading piston 10 of Z axis is provided with piezoelectric ceramics.Described Y-axis loads It is provided with lip block 16, it is to avoid the loading piston of Y-axis is deformed because gravity is too big between assembly 5 and pressure chamber.Ceramic blanket Piece 14 end face surrounding carries out chamfered, mutual between hydraulic loaded assembly present in existing rigid load mode to solve Interference.When being tested, ceramic gasket 14 end face posts elastica, prevents seepage flow test process fluid from formation sample and pottery The channelling of pad contact position.

Described detecting and controlling system 3 is connected with the described control end loading piston component by described pressurized control line 12, Described pressure transducer and displacement transducer 11 are electrically connected with detecting and controlling system 3 by described line pressure shift p-wire 13, institute State piezoelectric ceramics to electrically connect with described detecting and controlling system 3 by described permeability p-wire 15.Install on pressure chamber kettle 18 There is heating tube 20, heat to whole rock load maintainer, so that test system is tested at high temperature, on pressure chamber kettle 18 It is drilled with cooling water circulation water channel 21 from the beginning, rock load maintainer fast cooling can be made.

As shown in figure 5, described rotating lifting gear includes support 22, lifting hydraulic cylinder 23, reducer of turbodrill 24 and removable Unload mechanical hand 25, described lifting hydraulic cylinder 23, reducer of turbodrill 24 and dismountable mechanical handss 25 are fixed on described support 22.Institute State lifting hydraulic cylinder 23 and the clutch end of reducer of turbodrill 24 be connected with pressure chamber, dismountable mechanical handss 25 be used for handling and Lifting load maintainer, the bottom of described support 22 is provided with universal wheel 26, conveniently moves at any time.

To sum up, described test system has the advantage that:1st, described test system can be simultaneously right under high-temperature and high-pressure conditions Rock carries out mechanical property under triaxial stress, electric property, acoustical behavior and seepage flow performance test;2nd, it is provided with kettle and add Heat pipe and from the beginning cooling water circulation water channel, can be heated and control of being lowered the temperature to heating assembly;3rd, rock core gum cover, Neng Goumi are used The indoor hydraulic oil of loading piston rod on envelope formation sample and loading piston, isolation formation sample and pressure;4th, X, Y, Z axis adds Carry on assembly equipped with pressure transducer and displacement transducer, formation sample three-dimensional stress, strain can be tested;5th, X, Y-axis load The loading piston rod end face of assembly, equipped with corundum ceramic pad, plays insulating effect, enables test system to test formation sample Electric property;6th, the piston cylinder end-face circular that loads of Y-axis charging assembly designs the bearing capacity that improve pressure chamber kettle; 7th, the chamfered of corundum ceramic pad end face, can eliminate mutually dry between charger present in rigid load mode Disturb;8th, process of the test, corundum ceramic pad end face posts elastica, can prevent in flow event fluid from rock sample and corundum ceramic The channelling of pad contact position;9th, Z axis charging assembly, equipped with piezoelectric ceramic piece, can test the acoustical behavior of formation sample;10th, whole Test system is completely placed in pressure interior, kettle base is drilled with through hole, the test line data of whole charging assembly is adopted Manifold line can be guided to outside kettle by through hole, reduces the volume of device;11st, load maintainer rotating lifting gear make pressure chamber with And charging assembly is easier for installation.

Claims (8)

1. a kind of true triaxial Rock parameter measurement system it is characterised in that:Described test system include rock load maintainer (1), Load maintainer rotating lifting gear (2) and detecting and controlling system (3), described rock load maintainer (1) is connected to described rotation On lowering or hoisting gear, for testing the mechanical property of formation sample, sound under high-temperature and high-pressure conditions under the triaxial pressure not waited simultaneously Learn performance, electric property and seepage flow performance;Described rotating lifting gear is used for driving described rock load maintainer (1) to be rotated And elevating movement;Electricity component in rock load maintainer (1) and load maintainer rotating lifting gear (2) and described detection control System (3) processed is attached, and described detecting and controlling system (3) is used for by described rock load maintainer (1), formation sample being entered Row effect, the Parameters variation of collection formation sample, and control described rotating lifting gear to drive described rock load maintainer (1) to do Rotation and elevating movement;
Described rock load maintainer (1) inclusion pressure chamber, X-axis, Y-axis, Z axis charging assembly (4,5,6) and rock core gum cover (7), Described X-axis, Y-axis, Z axis charging assembly (4,5,6) are located at described pressure interior, described X-axis, Y-axis, Z axis charging assembly (4,5,6) It is respectively provided with two, be located at the front, back, left, right, up, down side of described formation sample (8), described X-axis charging assembly (4) bag respectively Include charging assembly after charging assembly and X-axis before X-axis, line of symmetry is configured and structure is identical centered on Y-axis, loads before X-axis After assembly and X-axis, charging assembly includes X-axis loading piston, and X-axis loads piston and is provided with the pressure transducer of X-axis, displacement sensing Device (11) and with line pressure shift p-wire (13);Described Y-axis charging assembly (5) includes the left charging assembly of Y-axis and the right loading of Y-axis Assembly, centered on X-axis, line of symmetry is configured and structure is identical, and the left charging assembly of Y-axis and the right charging assembly of Y-axis include Y-axis Load piston and piston base (9), described Y-axis loads piston and is provided with the pressure transducer of Y-axis, displacement transducer (11), adds Pressure control line (12) and line pressure shift p-wire (13);Described Z axis charging assembly (6) is included under charging assembly and Z axis on Z axis Charging assembly, under described Z axis, charging assembly includes Z axis loading piston, is fixed on the base of pressure chamber, described Z axis load Assembly includes Z axis and loads piston and piston base (9), and described Z axis load piston and are provided with the pressure transducer of Z axis, displacement biography Sensor (11), pressurized control line (12), line pressure shift p-wire (13) and permeability p-wire (15);Described rock core gum cover (7) center is coffin, and for placing formation sample (8), rock core gum cover (7) is along six faces difference of formation sample (8) It is provided with an opening, the external shape that the shape of opening loads piston with X-axis, Y-axis, Z axis is adapted, and loads piston and extend into each In the opening in face, opening is blocked;X-axis loads piston and Y-axis loads the end face of piston by ceramic gasket (14) and rock stratum The front, rear, left and right side of sample (8) contacts, and the loading piston (10) of Z axis is provided with piezoelectric ceramics, pressure interior is filled with Hydraulic oil, pressure chamber is provided with confined pressure pressurized pipeline (26), all of pipeline, p-wire and data acquisition in load maintainer Line all guides to pressure outdoor through the manhole of pressure chamber bottom, is connected with detecting and controlling system (3);
Described pressure chamber includes pressure chamber base (17) and pressure chamber kettle (18), and described pressure chamber base (17) is threaded In the bottom of described pressure chamber kettle (18), between pressure chamber base (17) and pressure chamber kettle (18), it is provided with sealing ring (19).
2. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:Described X-axis loads piston, Y It is cuboid that the Z axis that axle loads on charging assembly under piston and Z axis load piston near the part of formation sample (8), with length The part that cube is connected is cylinder, and the catercorner length of the end face that cuboid is contacted with formation sample (8) is straight with cylindrical Footpath is identical;It is cuboid that Z axis on charging assembly on Z axis load piston near the part of formation sample (8), and middle part is cylinder Body, the catercorner length of the end face that cuboid is contacted with formation sample (8) is identical with cylindrical diameter, and bottom is in diameter ratio The big cylinder of the cylindrical diameter in portion.
3. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:On described Y-axis charging assembly The face that contacts with pressure chamber of piston base (9) of Y-axis be circular arc camber, be adapted with the inwall of pressure chamber, circular arc camber Diameter is identical with pressure chamber kettle (18) internal diameter.
4. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:Described ceramic gasket (14) Surrounding carries out chamfered.
5. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:Described ceramic gasket (14) Outer surface posts elastica.
6. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:Described pressure chamber kettle (18) Side wall be provided with heating tube (20) and cooling water channel (21).
7. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:Described rotating lifting gear bag Include support (22), lifting hydraulic cylinder (23), reducer of turbodrill (24) and dismountable mechanical handss (25), described lifting hydraulic cylinder (23), reducer of turbodrill (24) and dismountable mechanical handss (25) are fixed on described support (22), described lifting hydraulic cylinder (23) It is connected with pressure chamber with the clutch end of reducer of turbodrill (24).
8. true triaxial Rock parameter measurement system according to claim 1 it is characterised in that:The Y of pressure chamber base (17) Two lip blocks (16) are provided with axle, for supporting Y-axis to load piston.
CN201510099996.0A 2015-03-06 2015-03-06 True triaxial Rock parameter measurement system CN104677815B (en)

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