CN202628070U - Drilling downhole parameter interaction simulation experimental device - Google Patents
Drilling downhole parameter interaction simulation experimental device Download PDFInfo
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- CN202628070U CN202628070U CN 201220139240 CN201220139240U CN202628070U CN 202628070 U CN202628070 U CN 202628070U CN 201220139240 CN201220139240 CN 201220139240 CN 201220139240 U CN201220139240 U CN 201220139240U CN 202628070 U CN202628070 U CN 202628070U
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Abstract
The utility model discloses a drilling downhole parameter interaction simulation experimental device. The device comprises a rock core clamping mechanism, a drilling mechanism, a pressuring mechanism and a pressurization control pipeline, wherein the rock core clamping mechanism and the drilling mechanism are arranged above and below an experimental frame coaxially; constant pressure liquid applied to a rock core by a constant pressure pump of a rock constant pressure mechanism and the pressurized liquid or high-pressure air applied to the rock core by a constant pressure pump or a high-pressure air supply of the drilling mechanism are controlled by the pressurization control pipeline consisting of a filter, a back-pressure device and a flowmeter; the back-pressure device is connected with the air pipe of the high-pressure air supply of the drilling mechanism; the constant pressure pump of the clamping mechanism, the constant pressure pump of the drilling mechanism and the high-pressure air supply are controlled to apply a pressure to the rock core by the air supply pressure of the high-pressure air supply; a sensor of the back-pressure device and the flowmeter transmit signals to a computer; the change of relevant parameters is controlled by a computer program; and a reasonable drilling scheme for underpressure drilling is formulated; and therefore, the drilling speed and the drilling quality are improved and the drilling cost is reduced.
Description
Technical field
The utility model relates to a kind of oil drilling relevant parameter experimental facilities; Specifically a kind of drilling well downhole parameters interaction analogue experiment installation; For the oil field under balance pressure drilling provides reliable gross data, be convenient to make the more reasonably embodiment of under balance pressure drilling.
Background technology
Under-balanced drilling technology has been proved to be a kind of feasible and cost-effective method.In conventional overbalance or near-balance drilling, drilling fluid is except that tool cutting carring, stabilizing borehole, cools reamer head etc. act on, and the what is more important equilibrium strata pressure prevents that formation fluid from getting into pit shaft.Under balance pressure drilling then changes bottom hole circulating pressure consciously, makes it be lower than payzone pressure, and when continuing to creep into, this underbalance pressure makes the payzone fluid flow into pit shaft, thereby has avoided serial problems such as fluid leakage and reduction formation damage.In addition, under balance pressure drilling also has the prolongation bit life, is beneficial to find oil-gas reservoir and advantages such as protection environment and reduction well stimulation operating cost.
This device can be simulated parameters such as rotating speed in the under balance pressure drilling process, the pressure of the drill, burden pressure, strata pressure, bottom hole circulating pressure; Thereby can carry out simulated test in indoor process, mechanism, effect etc., the interaction of various factors in the drilling process is studied under balance pressure drilling.
Summary of the invention
The purpose of the utility model is to provide a kind of drilling well downhole parameters interaction analogue experiment installation, for the oil field under balance pressure drilling provides reliable gross data, is convenient to make the more reasonably embodiment of under balance pressure drilling.
The technical scheme of the utility model realizes in the following manner:
The utility model comprises rock core clamping device, drilling mechanism, pressure exerting arrangement and the control piper of exerting pressure; It is characterized in that rock core clamping device and drilling mechanism concentric be installed in experiment frame about; The rock core clamping device is vertically fixed on the top of clamper table top, and drilling mechanism is fixed on the bottom of clamper table top through creeping into support; The drill bit of drilling mechanism is vertically to middle part at the bottom of the rock core in the rock core clamping device; Pressure exerting arrangement comprises constant pressure pump, axial compression pump and the ring press pump of exerting pressure to the rock core clamping device; Constant voltage pipeline and the strata pressure injection hole of constant pressure pump outlet pressure through the band pressure sensor directly presses on the rock core on the end face; The axial compression pump discharge pressure communicates with the axial compression hole through the axial compression pipeline of band pressure sensor; Press on through the axial compression plug on the upper surface of rock core, ring press pump outlet pressure is through on the ring side face that the ring of band pressure sensor presses that pipeline communicates with ring pressure hole, support steel cylinder through being located at the rock core periphery and rubber press on rock core; Pressure exerting arrangement also comprises the constant pressure pump and the high-pressure air source of drilling mechanism; Constant pressure pump outlet pressure or high-pressure air source pressure communicate with drill-in fluid hole on the drilling rod through constant voltage pipeline or the high-pressure air source pipeline of band pressure sensor, press on the rock core of upper surface of drill bit; The constant pressure pump of rock core constant voltage mechanism is controlled through the control piper of being made up of strainer, back pressure device and flow meter of exerting pressure the high pressure gas of exerting pressure liquid or exerting pressure that rock core applies the constant pressure liquid that rock core applied and the constant pressure pump or the high-pressure air source of drilling mechanism; The back pressure device links to each other with the tracheae of the high-pressure air source of drilling mechanism; The constant pressure pump of the supply gas pressure control clamping device through high-pressure air source, the constant pressure pump and the high-pressure air source of drilling mechanism are exerted pressure to rock core; The sensor and the flow meter of back pressure device transmit signal to computer; Change through computer program control relevant parameter, make the reasonable drilling scheme of under-voltage drilling well, thereby improve bit speed, drilling quality and reduction drilling cost.
Clamping device comprises clamping body, axial compression plunger, clamper plug, clip, shaft bottom simulation cavity and clamper table top; The clamping body is made as cylindrical, the clamping body through shaft bottom simulation cavity and clip be fixed on clamper table top centre bore above, in the middle part of the clamper intracoelomic cavity, be provided with rock core; Periphery at rock core is provided with rubber tube; On the external diameter undergauge section of rubber tube middle part, be provided with support tube, be provided with the axial compression plunger, establish the end cover of taper in the upper end of rubber tube on the top of rock core; On end cover, be provided with the combined type clamper plug that is threaded with clamper, movable sealing cooperates between clamper plug and the axial compression plunger; On end face on the clamper plug, be provided with an axial compression hole, be provided with a confined pressure hole at the middle part of clamping body, simulation cavity lower, outer perimeter is provided with a pressure regulating hole in the shaft bottom, and the center is provided with a drilling rod seal at the bottom of shaft bottom simulation cavity.
Drilling mechanism comprises that the bow font that is fixedly connected with the clamper table top creeps into support; At the belt pulley that creeps into the band internal tooth that support and clamper table top centre bore corresponding position be provided with; With the belt pulley coaxial line and be fixed on the pressure of the drill simulation cavity that creeps into the support bottom, be located at the piston in the pressure of the drill simulation cavity, the middle part periphery of passing piston and belt pulley centre bore establishes that tooth, upper top are established drill bit, the drilling rod in drilling fluid hole is established at the center; Piston and drilling rod are rotated the bearing bracket stand and the bearing of the one that is connected; Be located at creep into support one side lower part motor, be located at the pressure of the drill injection hole of the pressure of the drill simulation cavity lower, outer perimeter, belt pulley is connected with motor pulley through belt; The drilling fluid hole is connected with the constant voltage pipeline or the high-pressure air source pipeline of drilling mechanism through swivel joint, and the pressure of the drill injection hole is connected with the high pressure gas source capsule.
The utility model does not find as yet that through retrieval similar technology is arranged, and the utlity model has following advantage:
1, can simulate interactional parameter variation under balance pressure drilling or conventional overbalance drilling well or the near-balance drilling process, sum up the rule of reasonable drilling well, give and formulate reasonable drilling plan, reliable foundation is provided.
2, the running of interactional parameter variation device instrument, the variation of flow pressure in the control drilling process; The size of the speed of drilling pressure and bit speed, drill bit place pressure size, return pressure; The collection of parameter all is that experimental data is accurate through computer program control.
3, the under balance pressure drilling scheme of making can be found the oil-gas Layer that strata pressure is less, can practice thrift drilling cost.
Description of drawings
Fig. 1-the utility model experiment flow figure
The structural representation of Fig. 2-clamper
The structural representation of Fig. 3-drilling well mechanism
1-confined pressure pump 2-axial compression pump 3-pressure sensor 4-constant pressure pump 5-clamping device 6-strainer 7-back pressure device 8-flow meter 9-drilling mechanism 10-reducing valve 11-high-pressure air source 12-atmospheric valve among Fig. 1
5-1-clamper table top 5-2-shaft bottom simulation cavity 5-3-clip 5-4-confined pressure hole 5-5-clamping body 5-6-clamper plug 5-7-axial compression cavity 5-8-axial compression plunger 5-9-strata pressure injection hole 5-10-O shape circle 5-11-end cover 5-12-rock core 5-13-rubber tube 5-14-return port 5-15-drilling rod seal among Fig. 2
9-1-the pressure of the drill injection hole 9-2-the pressure of the drill simulation cavity 9-3-creeps into the tooth 9-10-belt 9-11-motor pulley 9-12-bearing 9-13-piston 9-14-motor 9-15-swivel joint 9-16-drilling fluid inlet on the 9-7-drilling rod 9-8-drill bit 9-9-drilling rod of support 9-4-bearing 9-5-belt pulley 9-6-drilling fluid hole among Fig. 3.
The specific embodiment
For further disclosing the technical scheme of the utility model, elaborate through embodiment below in conjunction with Figure of description:
Comprise clamping device 5, drilling mechanism 9, pressure exerting arrangement and the control piper of exerting pressure like Fig. 1,2, the utility model shown in 3; It is characterized in that clamping device 5 and drilling mechanism 9 concentric be installed in clamper table top 5-1 about; Clamping device is vertically fixed on the top of clamper table top 5-1, and drilling mechanism is fixed on the bottom of clamper table top through creeping into support 9-3; The drill bit 9-8 of drilling mechanism is vertically to middle part at the bottom of the rock core 5-2 in the rock core clamping device; Pressure exerting arrangement comprises constant pressure pump 4, axial compression pump 2 and the ring press pump 1 of exerting pressure to clamping device; Constant voltage pipeline and the strata pressure injection hole 5-9 of constant pressure pump outlet pressure through band pressure sensor 3 directly presses on the rock core on the end face; The axial compression pump discharge pressure communicates with axial compression hole 5-7 through the axial compression pipeline of band pressure sensor 3; Press on the upper surface of rock core through axial compression plunger 5-8, ring press pump outlet pressure is through on the ring side face that the ring of band pressure sensor 3 presses that pipeline communicates with ring pressure hole, support steel cylinder through being located at the rock core periphery and rubber tube 5-13 press on rock core; Pressure exerting arrangement also comprises the constant pressure pump and the high-pressure air source 11 of drilling mechanism; Constant pressure pump outlet pressure or high-pressure air source pressure communicate with drill-in fluid hole on the drilling rod through constant voltage pipeline or the high-pressure air source pipeline of band pressure sensor, press on the rock core of upper surface of drill bit; The constant pressure pump of rock core constant voltage mechanism is controlled through the control piper of being made up of strainer 6, back pressure device 7 and flow meter 8 of exerting pressure the high pressure gas of exerting pressure liquid or exerting pressure that rock core applies the constant pressure liquid that rock core applied and the constant pressure pump or the high-pressure air source of drilling mechanism; The back pressure device links to each other with the tracheae of the high-pressure air source of drilling mechanism; The constant pressure pump of the supply gas pressure control clamping device through high-pressure air source, the constant pressure pump and the high-pressure air source of drilling mechanism are exerted pressure to rock core; The sensor and the flow meter of back pressure device transmit signal to computer; Change through computer program control relevant parameter, make the reasonable drilling scheme of under-voltage drilling well, thereby improve bit speed, drilling quality and reduction drilling cost.
As shown in Figure 2; The constant voltage pipeline of clamping device 5 injects liquid (kerosene) through the strata pressure injection hole 5-9 on the axial compression plunger 5-8 in rock core 5-12; The strata pressure of simulated formation interval; The axial compression pipeline injects liquid through the axial compression hole 5-7 on the clamper plug 5-6 on the annular section of axial compression plunger 5-8, exert pressure the following multiple pressure or the support force of simulated formation to rock core 5-12 surface through axial compression plunger 5-8; The pressure of axial compression cavity does not leak under O shape circle 5-10 sealing; The confined pressure pipeline is exerted pressure to support tube through the confined pressure hole 5-4 on the clamping body 5-5, and support tube is exerted pressure to rubber tube 5-13, and rubber tube is exerted pressure to rock core, and what the simulated formation ring was all is squeezed under end cover 5-11 sealing and the position-limiting action, and pressure can not leak and decompose.
As shown in Figure 3; Drilling mechanism 9 is through creeping into support 9-3 and clamping device 5 concentric being fixed on the clamper table top 5-1; Rotary power is provided for drilling rod 9-7 and drill bit 9-8 through motor 9-14, motor pulley 9-11, belt 9-10, belt pulley 9-5, the external tooth 9-9 on the drilling rod makes the drilling rod rotation through the internal tooth engagement with belt pulley 9-5; The constant voltage pipeline of drilling mechanism and high-pressure air source pipeline carry liquid or high pressure gas, simulation drilling fluid injection pressure and flow through swivel joint 9-15 and the drilling fluid inlet 9-16 that is rotatably connected with drilling rod to drill bit end injection silt particle; The pressure of the drill injection hole 9-1 through on the pressure of the drill simulation cavity 9-2 injects high pressure gas,
Promote drilling rod through piston 9-13 with the bearing 9-12 that piston 9-13 and drilling rod 9-7 are connected one with rotation mode and advance simulation drilling pressure and rate of penetration.
Like Fig. 1, shown in 2; If the drilling fluid injection pressure of simulation is under-voltage drilling well less than the strata pressure of simulation, if greater than or to be equilibrated at the simulation ground pressure be conventional overbalance drilling well or near-balance drilling; The simulation drilling fluid injects the size of excess pressure; The flow size be through with shaft bottom simulation cavity 5-2 on refluxing opening 5-14 is connected, by strainer 6, back pressure device, flow meter 8 and pressure sensor 3, reducing valve 10 is formed the keyholed back plate roads with atmospheric valve 12 and is controlled.
1, the key technical indexes of the utility model
1. bit diameter: 31.75mm (1.266 '), hydrophthalmia 6.35mm (1/4 ')
2. rotating speed: 0 ~ 200rpm is adjustable continuously, and can be by computer settings
3. the pressure of the drill: gear wheel 890 N ± 10N, PDC500N ± 10N
4. burden pressure: 100MPa clear water
5. strata pressure: 70MPa kerosene
6. bottom hole circulating pressure: 70MPa air and clear water
7. rock core size: 76.2mm (3 ') * ［ 50～88.9mm (3.5 ') ］
8. the preboring degree of depth, brill are deeply: computer input control.
9. clear water flow, air mass flow are all measured by flow meter.
10. confined pressure, axial compression, pore pressure size are all by computer input control.
2, drilling fluid injects the circulating system
Adopt air and clear water as circulatory mediator, so this system mainly divides two parts, a part is a high pressure
Air circulation system, a part are the water under high pressure circulating systems, and two parts are separate, connect each other again.
The pressure-air circulating system mainly comprises: quiet air compressor, gas drive gas booster pump, high pressure tank, high-pressure pressure-reducing valve, back-pressure valve, the strainer of replaceable cartridge, flow meter, back pressure regulator, pressure sensor etc.
The water under high pressure circulating system mainly comprises: high pressure constant voltage plunger displacement pump (ISCO100D), intermediate receptacle, back-pressure valve, the strainer of replaceable cartridge, flow meter, back pressure regulator, pressure sensor etc.
3, confined pressure and axial compression system
Providing of confined pressure and axial compression is that MP-I type multifunctional solution press pump provides automatically
MP-I type multifunctional solution press pump has following function
A, both can manually also can be electronic, also can move by computer control.Under the situation that does not connect electricity, to load onto rocking handle and get final product manual pressure or pressure release, its operation is in full accord with manually-actuated metering pump; Connect that electricity just can have start and stop through the control panel pressure release of pressurizeing, just changes on the panel, counter-rotating, high, normal, basic three keeps off speed controlling etc., can realize electric operating through these buttons; When using interface line that it is connected computer, we can realize computer control.
B, pressure 0-100MPa, pressing speed can be controlled.
C, the automatic tracking technique of pressure
Through of the variation of control software from the motion tracking confined pressure, adjust the operation of pump automatically, realize constant voltage control according to preset confined pressure parameter.
D, be designed with spacing before and after the plunger, superpressure power-off protection, off line and safety precautions such as force to stop.
This cover system is made up of following components: stepper motor (START company); Stepper motor driver (START company); Transformer (START company); Control circuit; Measuring pump; Pressure sensor (import, precision is less than 0.2%) control flow panel, application software.
4, simulated formation pressure system
Select for use the ISCO 100D type precise injection pump of U.S.'s import flat, range of flow 0 ~ 25ml/min, pressure limit 0 ~ 70MPa, but get final product also constant speed of constant voltage.
This pump is produced by American I SCO company, is the continuous syringe pump of D series.Whole system is mainly by controller; A, two single pump housings of B and connecting line valve are formed.
Controller mainly is made up of Acquisition Circuit, control circuit and display module, it with single pump housing between holding wire be connected, after the start, can detect model and duty and each item running parameter of each pump housing automatically, and can make amendment and set each parameter.After the startup work, controller shows the operating pressure of A, each pump housing of B in real time, working flow, concrete parameters such as the interior hydraulic fluid capacity of pump.In addition, controller is reserved with the communication interface with computer and electromagnetic valve, and convenient later upgrading is changed.The list pump housing mainly is made up of sensor, signal circuit, working cavity and control motor, in its periphery control power switch is only arranged then, only needs each other just can work after the simple pipeline valve connection.This system not only can adopt water, kerosene, alcohol etc. as working solution, can also adopt compression such as liquid carbon dioxide gas as working solution, and the experiment of reality is had bigger meaning.
This system is in long-term application, and overall performance is stable, and reliable operation greatly facilitates experimental work.
The s main working parameters of 100D system:
5, automatically control and data collecting system
System operates and adopts Windows2000 Chinese operating system, application software to adopt Visual Basic6.0 programming, and the executable file that generates at last makes fixing disc, and data acquisition board employing precision is 16 a clever magnificent pci bus data acquisition plate.And be equipped with the computer data acquiring peripheral circuit that our factory is developed voluntarily.
Computer adopts and grinds magnificent industrial control computer, configuration P4 3.2G, internal memory 512M, hard disk 160G, 17 " LCDs; The HP1020 laser printer.
The full Chinese interface of operation control software, flexible operation, convenience, the dialog box of window type is all used in all inputs and prompting, and the experiment flow signal is convenient to be familiar with system's operation; Tested the directly data sheet of output of back computer.
Claims (3)
1. drilling well downhole parameters interaction analogue experiment installation; Comprise rock core clamping device, drilling mechanism, pressure exerting arrangement and the control piper of exerting pressure; It is characterized in that rock core clamping device and drilling mechanism concentric be installed in experiment frame about; The rock core clamping device is vertically fixed on the top of clamper table top, and drilling mechanism is fixed on the bottom of clamper table top through creeping into support; The drill bit of drilling mechanism is vertically to middle part at the bottom of the rock core in the rock core clamping device; Pressure exerting arrangement comprises constant pressure pump, axial compression pump and the ring press pump of exerting pressure to the rock core clamping device; Constant voltage pipeline and the strata pressure injection hole of constant pressure pump outlet pressure through the band pressure sensor directly presses on the rock core on the end face; The axial compression pump discharge pressure communicates with the axial compression hole through the axial compression pipeline of band pressure sensor; Press on through the axial compression plug on the upper surface of rock core, ring press pump outlet pressure is through on the ring side face that the ring of band pressure sensor presses that pipeline communicates with ring pressure hole, support steel cylinder through being located at the rock core periphery and rubber press on rock core; Pressure exerting arrangement also comprises the constant pressure pump and the high-pressure air source of drilling mechanism; Constant pressure pump outlet pressure or high-pressure air source pressure communicate with drill-in fluid hole on the drilling rod through constant voltage pipeline or the high-pressure air source pipeline of band pressure sensor, press on the rock core of upper surface of drill bit; The constant pressure pump of rock core constant voltage mechanism is controlled through the control piper of being made up of strainer, back pressure device and flow meter of exerting pressure the high pressure gas of exerting pressure liquid or exerting pressure that rock core applies the constant pressure liquid that rock core applied and the constant pressure pump or the high-pressure air source of drilling mechanism; The back pressure device links to each other with the tracheae of the high-pressure air source of drilling mechanism; The constant pressure pump of the supply gas pressure control clamping device through high-pressure air source, the constant pressure pump and the high-pressure air source of drilling mechanism are exerted pressure to rock core; The sensor and the flow meter of back pressure device transmit signal to computer; Change through computer program control relevant parameter, make the reasonable drilling scheme of under-voltage drilling well.
2. according to claims 1 described drilling well downhole parameters interaction analogue experiment installation; It is characterized in that clamping device comprises clamping body, axial compression plunger, clamper plug, clip, shaft bottom simulation cavity and clamper table top; The clamping body is made as cylindrical, the clamping body through shaft bottom simulation cavity and clip be fixed on clamper table top centre bore above, in the middle part of the clamper intracoelomic cavity, be provided with rock core; Periphery at rock core is provided with rubber tube; On the external diameter undergauge section of rubber tube middle part, be provided with support tube, be provided with the axial compression plunger, establish the end cover of taper in the upper end of rubber tube on the top of rock core; On end cover, be provided with the combined type clamper plug that is threaded with clamper, movable sealing cooperates between clamper plug and the axial compression plunger; On end face on the clamper plug, be provided with an axial compression hole, be provided with a confined pressure hole at the middle part of clamping body, simulation cavity lower, outer perimeter is provided with a pressure regulating hole in the shaft bottom, and the center is provided with a drilling rod seal at the bottom of shaft bottom simulation cavity.
3. according to claims 1 described drilling well downhole parameters interaction analogue experiment installation; It is characterized in that drilling mechanism comprises that the bow font that is fixedly connected with the clamper table top creeps into support; At the belt pulley that creeps into the band internal tooth that support and clamper table top centre bore corresponding position be provided with; With the belt pulley coaxial line and be fixed on the pressure of the drill simulation cavity that creeps into the support bottom, be located at the piston in the pressure of the drill simulation cavity, the middle part periphery of passing piston and belt pulley centre bore establishes that tooth, upper top are established drill bit, the drilling rod in drilling fluid hole is established at the center; Piston and drilling rod are rotated the bearing bracket stand and the bearing of the one that is connected; Be located at creep into support one side lower part motor, be located at the pressure of the drill injection hole of the pressure of the drill simulation cavity lower, outer perimeter, belt pulley is connected with motor pulley through belt; The drilling fluid hole is connected with the constant voltage pipeline or the high-pressure air source pipeline of drilling mechanism through swivel joint, and the pressure of the drill injection hole is connected with the high pressure gas source capsule.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220139240 CN202628070U (en) | 2012-04-05 | 2012-04-05 | Drilling downhole parameter interaction simulation experimental device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220139240 CN202628070U (en) | 2012-04-05 | 2012-04-05 | Drilling downhole parameter interaction simulation experimental device |
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| Publication Number | Publication Date |
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| CN202628070U true CN202628070U (en) | 2012-12-26 |
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| CN 201220139240 Expired - Fee Related CN202628070U (en) | 2012-04-05 | 2012-04-05 | Drilling downhole parameter interaction simulation experimental device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048982A (en) * | 2014-06-30 | 2014-09-17 | 中国科学院武汉岩土力学研究所 | Multifunctional rock core holder for rock core scale nuclear magnetic resonance test |
| CN104989276A (en) * | 2015-07-10 | 2015-10-21 | 中国海洋石油总公司 | Rock jet experimental device and method capable of simulating stratum confining pressure |
| CN114165212A (en) * | 2021-11-26 | 2022-03-11 | 中国地质科学院勘探技术研究所 | Drilling parameter acquisition test device for small-caliber core drilling |
| CN114198082A (en) * | 2021-11-26 | 2022-03-18 | 中国地质科学院勘探技术研究所 | Test device for simulating drilling of small-caliber drilling hole bottom under complex working conditions |
-
2012
- 2012-04-05 CN CN 201220139240 patent/CN202628070U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048982A (en) * | 2014-06-30 | 2014-09-17 | 中国科学院武汉岩土力学研究所 | Multifunctional rock core holder for rock core scale nuclear magnetic resonance test |
| CN104989276A (en) * | 2015-07-10 | 2015-10-21 | 中国海洋石油总公司 | Rock jet experimental device and method capable of simulating stratum confining pressure |
| CN104989276B (en) * | 2015-07-10 | 2018-11-09 | 中国海洋石油集团有限公司 | The rock injection experiment device and experimental method of simulated formation confining pressure |
| CN114165212A (en) * | 2021-11-26 | 2022-03-11 | 中国地质科学院勘探技术研究所 | Drilling parameter acquisition test device for small-caliber core drilling |
| CN114198082A (en) * | 2021-11-26 | 2022-03-18 | 中国地质科学院勘探技术研究所 | Test device for simulating drilling of small-caliber drilling hole bottom under complex working conditions |
| CN114165212B (en) * | 2021-11-26 | 2023-09-15 | 中国地质科学院勘探技术研究所 | Drilling parameter acquisition test device for small-caliber core drilling |
| CN114198082B (en) * | 2021-11-26 | 2024-06-04 | 中国地质科学院勘探技术研究所 | Drilling test device for simulating complex working conditions at bottom of small-caliber drilling hole |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20170405 |