CN106896212A - The device of monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property change - Google Patents
The device of monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property change Download PDFInfo
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Abstract
The present invention relates to a kind of device for monitoring the change of deepwater drilling liquid invasion procedure hydrate reservoir physical property, including：Pit shaft hydrate reservoir coupled heat and mass transfer unit and circulation of drilling fluid unit；Pit shaft hydrate reservoir coupled heat and mass transfer unit simulates reservoir structure by the method that back-up sand is compacted, for Hydrate in Porous Medium generation, decompose with regeneration reacting environment is provided, and using including the various monitoring measures including temperature and pressure sensing, electrical impedance sensing, monitoring ultrasonic, TDR monitoring and nuclear magnetic resonance tracking isotope, the physical parameter of diverse location changes in real time record reservoir；Circulation of drilling fluid unit is used to simulate the circulation of drilling fluid of different drilling parameters；The device can simulate the hydrate reservoir under the conditions of different water depth, and reservoir internal temperature, pressure, the change of electrical impedance and the Transport of the materials such as fluid, original solid phase hydration thing is decomposed during mud filtrate invasion, during monitoring pit shaft reservoir heat and mass.
Description
Technical field
The invention belongs to natural petroleum gas field field, in particular it relates to a kind of monitoring deepwater drilling liquid invasion procedure water
The device of compound reservoir change, the internal act for observing and analyzing mud filtrate invasion hydrate reservoir under different condition
Dynamic change, so that summary and induction goes out corresponding rule.
Background technology
Hydrate is a kind of cagelike structure complex compound, generally by small molecule hydrocarbon (such as methane, ethane, propane, normal butane)
Constituted with hydrone.It has the advantages that rich reserves, widely distributed, energy density are high and post-combustion pollution is small, is considered as
Future can replace the clean energy resource of conventional fossil fuel, receive pursuing and concern for countries in the world.Many countries are all first
After carried out gas hydrates pilot production project, but the only former Soviet Union has considerable business in the pilot production of Messoyakha field at present
Industry benefit.
The main preservation of gas hydrates in nature is in deep water stratum and continental shelf frozen soil layer.Exceedingly odious
Environment brings a variety of difficulties to exploitation engineering, and requirement higher is proposed to technical staff and corollary equipment.Except storm,
The influence of the factor such as shake and stormy waves stream, hydrate itself is also the weight for needing to overcome in engineering to temperature, the sensitiveness of pressure
Hang-up.The decomposition of hydrate frequently can lead to the things such as formation collapse, borehole well instability, well kick blowout, line clogging with regeneration
Therefore, the normal production of influence endangers the safety of personnel and equipment.
Drilling well is the necessary means of the recovery of subterranean energy.When drilling fluid invades reservoir in cyclic process, meeting and reservoir
Generation heat and mass.Different from conventional reservoir, after certain energy is absorbed, temperature can be gradually increasing until exceeding hydrate reservoir
Hydrate phase balance curve, decomposes the substantial amounts of gas of heat absorption generation and water.And the fluid for generating can spread under partial pressure differential effect,
Hinder drilling fluid to be flowed to reservoir depths, if suitable temperature, pressure, can also regenerate hydrate solids particle, change
Reservoir properties.The process contains the interaction between drilling fluid and reservoir, has been related to multiple variable parameters, relatively multiple
It is miscellaneous.Once control is improper, a series of geology disaster can be triggered, cause the loss for being difficult to retrieve.
At present, experimental study of the domestic and foreign scholars in hydrate field is concentrated mainly on the generation of simulating hydrate and divides
Solution, the phase balance condition probed under hydrate varying environment.And the research of heat and mass is still immature in hydrate reservoir, to boring
The understanding that well liquid invades the behavior dynamic law after hydrate reservoir is even more near barren.
For above-mentioned situation, it is necessary to design a set of can monitoring indoors and analyze mud filtrate invasion process under deepwater environment
The device of middle hydrate reservoir change, by changing drilling fluid temperature, wellbore pressure, reservoir porosity, hydrate saturation
The corresponding data of gain of parameter such as degree, go out corresponding rule, so that for deep water drilling hydrate provides optimization side with summary and induction
Case and the theoretical foundation of forecasting risk, ensure the safety of field operation.
The content of the invention
To fill up current technological gap, the present invention provides a kind of mud filtrate invasion hydrate under being used to simulate deepwater environment and stores up
Layer, and by changing drilling fluid temperature, wellbore pressure, reservoir porosity, hydrate concentration, reservoir initial temperature and pressure etc.
Parameter analyzes the device of related law, is to avoid the drilling fluid from triggering hydrate mass to decompose during deep water drilling hydrate
Accident provides the theoretical foundation of prioritization scheme and forecasting risk.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows：
The device of monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property change, including：Pit shaft-hydrate reservoir coupling
Close heat and mass unit and circulation of drilling fluid unit；Pit shaft-hydrate reservoir coupled heat and mass transfer unit is compacted by back-up sand
Method simulation reservoir structure, be Hydrate in Porous Medium generation and mud filtrate invasion under the conditions of hydrate decomposition with again
Generation provides reacting environment, and utilization includes temperature pressure sensing, electrical impedance sensing, monitoring ultrasonic, TDR monitorings and nuclear-magnetism
The physical parameter change of isotope diverse location in interior various monitoring measures, real time record reservoir is followed the trail of in resonance；Drilling fluid
Cycling element is used to simulate the circulation of drilling fluid of different drilling parameters, and invades drilling well using the difference metering for circulating front and rear flowmeter
Liquid measure；The device can simulate the hydrate reservoir under the conditions of different water depth, be subjected to the feelings of different work parameter mud filtrate invasion
Condition, in monitoring pit shaft-reservoir heat and mass transfer process, reservoir internal temperature, pressure, the change of electrical impedance and decomposes fluid, original
The Transport of the predetermined substances such as solid phase hydration thing.
Relative to prior art, beneficial effects of the present invention are as follows：
1st, diverse location in reservoir can be monitored by temperature, pressure, sound wave, electromagnetic wave, electrical impedance multiple means
Physical parameter is mutually authenticated with the change of mud filtrate invasion, data accuracy and reliability is improved, so as to analyze corresponding behavior
Dynamic law；
2nd, the hole of simulation reservoir can be changed by changing the particle diameter of filling sandstone and the gas-liquid ratio of injection sandstone
The saturation degree of degree and hydrate, analyzes its influence to mud filtrate invasion reservoir behavior dynamic law；
3rd, it can be analyzed by changing salinity, temperature, circulation discharge capacity and the wellbore pressure of drilling fluid to invade drilling fluid
Enter the influence of reservoir behavior dynamic law；
4th, can be put including the hydrocarbon oxygen including H3, C14, O20 by changing the labelled element in injection gas and liquid
Injectivity isotope, during following the trail of mud filtrate invasion reservoir, the diffusion feelings of the decompositions situation of different hydrates and decomposition fluid
Condition；
5th, can be by changing the environment temperature and environmental pressure of experimental system, drilling fluid is invaded under the conditions of simulation different water depth
Enter the situation of hydrate reservoir；
6th, pit shaft part and reservoir portion thermal insulation can be dielectrically separated from before circulation of drilling fluid, it is to avoid influence each other,
It is more close with on-site actual situations.
Brief description of the drawings
Fig. 1 is the schematic diagram for monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property changeable device；
Fig. 2 is distribution schematic diagram of the same group of comprehensive sensor on vertical section；
Fig. 3 is connection diagram between adiabatic insulation flashboard and horizontal straight tube tubing string；
In figure：101st, vertical straight tube tubing string, 102, horizontal straight tube tubing string, 103, horizontal straight tube tubing string lid plug, 201, comprehensive
Sensor, 202, NMR system, 203, ultrasonic atomization probe, 204, coaxial type TDR probes, 301, first flowmeter,
302nd, second flowmeter, 303, first pressure table, 304, second pressure table, the 305, the 3rd pressure gauge, the 306, first thermometer,
307th, second temperature table, the 308, the 3rd thermometer, 401, mud pit, 402, controllable heater, 403, high pressure reciprocation cycle pump,
404th, back-pressure valve, 501, controllable telescopic pipe, 502, adiabatic insulation flashboard, 503, gas-liquid mixed supplying module.
Specific embodiment
As shown in figure 1, the device of monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property change, including：Pit shaft-water
Compound reservoir coupled heat and mass transfer unit and circulation of drilling fluid unit；Pit shaft-hydrate reservoir coupled heat and mass transfer unit leads to
Cross the method simulation reservoir structure of back-up sand compacting, be Hydrate in Porous Medium generation and mud filtrate invasion under the conditions of hydrate
Decomposition with regeneration provide reacting environment, and using include temperature pressure sensing, electrical impedance sensing, monitoring ultrasonic, TDR supervise
Survey and the physical parameter of nuclear magnetic resonance tracking isotope diverse location in interior various monitoring measures, real time record reservoir becomes
Change；Circulation of drilling fluid unit is used to simulate the circulation of drilling fluid of different drilling parameters, and using the difference meter of flowmeter before and after circulation
Amount invades drilling well liquid measure；The device can simulate the hydrate reservoir under the conditions of different water depth, be subjected to different work parameter drilling well
The situation that liquid is invaded, in monitoring pit shaft-reservoir heat and mass transfer process, reservoir internal temperature, pressure, the change and decomposition of electrical impedance
The Transport of the predetermined substances such as fluid, original solid phase hydration thing.
Pit shaft-hydrate reservoir coupled heat and mass transfer unit, including：Vertical straight tube tubing string 101, horizontal straight tube tubing string 102,
Horizontal straight tube tubing string lid plug 103；Wherein, vertical straight tube tubing string 101 is using circular tubing string, vertically placement, horizontal straight tube tubing string 102
Using circular tubing string, horizontal positioned, vertical straight tube tubing string 101, horizontal straight tube tubing string 102 are fixedly connected, vertical straight tube tubing string 101
It is in 90 ° of angles between horizontal straight tube tubing string 102,102 points by horizontal straight tube tubing string of vertical straight tube tubing string 101 is upper and lower two-section；
Horizontal straight tube tubing string 102 uses compacting back-up sand, and reservoir porosity is changed by adjusting gravel size, for simulation and pit shaft
The one-dimensional hydrate reservoir of radial direction of contact, its one end is connected with the middle part of vertical straight tube tubing string 101, and the other end is by horizontal straight tube tubing string
Lid plug 103 is blocked, a length of L of horizontal straight tube tubing string 102, and internal diameter is D, and vertical straight tube tubing string 101 is used to simulate circulation of drilling fluid mistake
The pit shaft contacted with reservoir in journey.
Horizontal straight tube tubing string 102 equidistantly uniformly installs totally 20 groups of comprehensive sensors 201 along horizontal axis direction, and every group comprehensive
Close sensor 201 and include 4 probes positioned at same perpendicular, every probe is disposed radially, and every group of 4 probes are mutual
Be distributed in the horizontal vertical section of straight tube tubing string 102 in 90 °, two be vertically arranged, two be horizontally disposed with；Carried on every probe
2 groups of probes, 2 groups of probes are respectively apart from horizontal straight tube tubing string 102 inner tubal wall D/5,2D/5, every group of temperature of probe monitors present position
Degree, pressure, electrical impedance；The outer end of comprehensive sensor 201 is provided with NMR system 202, is centered around the whole body of horizontal straight tube tubing string 102
Outward, for following the trail of Diffusion Law of the specific isotope in reservoir.
Press close to vertical being provided with the vertical position of straight tube tubing string 101 on horizontal straight tube tubing string 102 to be longer than in horizontal straight tube tubing string 102
Controllable telescopic pipe 501 is set in the slideway in footpath, slideway with adiabatic insulation flashboard 502；Wherein controllable telescopic pipe 501 insulate with adiabatic
Flashboard 502 is rigidly connected, and controllable telescopic pipe 501 drives adiabatic the insulation complete pair of vertical straight tube tubing string 101 of flashboard 502 and level
Envelope between straight tube tubing string 102 is cut；Thermal insulation insulation flashboard 502 is located inside slideway, and controllable using adiabatic insulating rigid material
The connecting portion of telescoping tube 501 is in T shape, and dynamic sealing is formed with slideway.
Horizontal straight tube tubing string lid plug 103 uses high pressure resistant cylinder, and its is same to be diametrically provided with two at the D/6 of the center of circle
Flowing ports, for providing fluid Vomitory for horizontal straight tube tubing string 102；The 3rd pressure is separately installed with two in flowing ports
The thermometer 308 of power table 305 and the 3rd, measures the temperature and pressure of the horizontal fluid of straight tube tubing string 102 that comes in and goes out respectively；End is flowed at two
Mouth is connected by the first adiabatic pipeline with gas-liquid mixed feed unit 503, the gas for providing abundance for horizontal straight tube tubing string 102
Liquid fluid-mixing is generating hydrate.
The inner circle centre position of horizontal straight tube tubing string lid plug 103 is provided with coaxial TDR sensing seats, be provided with sensing seat five groups it is coaxial
TDR probes 204, five groups of coaxial TDR probes 204 L/6,2L/6,3L/6,4L/6,5L/6 long, five groups of coaxial TDR probes 204 respectively
It is horizontally fixed on center line, horizontal straight tube tubing string 102 is equidistantly divided into six parts, satisfies for testing hydrate in different zones
With degree and the change of moisture content, mud filtrate invasion state is analyzed；Horizontal straight tube tubing string lid plug 103 is provided with ultrasound near circle centre position
Ripple atomization probe 203, for the change of hydrate concentration in testing level straight tube tubing string 102 and moisture content.
Circulation of drilling fluid unit, including：Mud pit 401, high pressure reciprocation cycle pump 402, controllable heater 403 and back-pressure valve
404；Mud pit 401 is connected by the first adiabatic feed-line with the vertical upper port of straight tube tubing string 101, the first adiabatic feed-line
On from mud pit 401 to the vertical upper port of straight tube tubing string 101 be sequentially arranged with first flowmeter 302, high pressure reciprocation cycle pump 402,
Controllable heater 403, first pressure table 303, the first thermometer 306；The vertical lower port of straight tube tubing string 101 is adiabatic defeated by second
Send pipeline to be connected with mud pit 401, on the second adiabatic feed-line from the vertical lower port of straight tube tubing string 101 to mud pit 401 according to
It is secondary equipped with back-pressure valve 404, second pressure table 304, second temperature table 307, second flowmeter 302；Mud pit 401 fills enough
Specify the drilling fluid of ionic species and concentration；High pressure reciprocation cycle pump 402 is used to provide power for circulation of drilling fluid, while regulation and control
Circulation discharge capacity；Controllable heater 403 is used to regulate and control the temperature of drilling fluid；Back-pressure valve 404 be used for regulate and control circulation of drilling fluid during
Pressure in vertical straight tube tubing string 101；First flowmeter 302 and second flowmeter 302 are respectively used to measurement and flow in and out vertically
The mud flow rate of straight tube tubing string 101；First pressure table 303 and second pressure table 304 are respectively used to measure vertical straight tube tubing string
The real-time pressure of 101 upper ports and lower port；First thermometer 306 and second temperature table 307 are respectively used to measurement and flow into and flow
Go out the drilling fluid real time temperature of vertical straight tube tubing string 101.
One layer of insulating materials of coaxial type TDR probes 204 outside hot compresses, can reduce when electromagnetic wave is propagated in media as well
Loss, strengthens transmission capacity, reduces error, so that measurement result is more accurate.
The distribution such as Fig. 2 of 8 groups of probes on the same vertical section of horizontal straight tube tubing string 102 in every group of comprehensive sensor 201
It is shown.
Controllable telescopic pipe 502 is as shown in Figure 3 in the installation of the horizontal sliding way of straight tube tubing string 102 with thermal insulation insulation flashboard 503.
The method for monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property dynamic rule, using above-mentioned monitoring depth
The device of aqueous drilling fluid invasion procedure hydrate reservoir physical property change, it is concretely comprised the following steps：
(1) back-up sand gas injection liquid, cooling supercharging simulating hydrate reservoir
Controllable telescopic pipe 501 is driven, thermal insulation insulation flashboard 502 the horizontal bottom of straight tube tubing string 102 is pushed into, by vertical straight tube
Tubing string 101 and horizontal straight tube tubing string 102 insulate completely.
Horizontal straight tube tubing string lid plug 103 is unloaded, sandstone species and particle diameter is selected according to default reservoir matrix and porosity,
To back-up sand in horizontal straight tube tubing string 102 until overflowing, horizontal straight tube tubing string lid plug 103 is installed, then by horizontal straight tube tubing string 102
Inside vacuumizes.
It is that horizontal straight tube tubing string 102 freezes with immersion method, until the temperature data of the acquisition of comprehensive sensor 201 and the 3rd temperature
The reading for spending table 308 is consistent, reaches preset value and stablizes constant.
According to default gaseous species, class of liquids and mixed proportion needed for gas-liquid mixed feed unit 503 is configured
Fluid, and injected in horizontal straight tube tubing string 102, until pressure data and the 3rd pressure gauge 305 that comprehensive sensor 201 is obtained
Reading is consistent, reaches preset value and stablizes constant, now thinks that hydrate balances each other under the conditions of having reached this in porous media, root
Hydrate concentration in reservoir can be estimated according to the consumption of fluid in gas-liquid mixed feed unit 503.
(2) circulating fluid, simulation invades reservoir heat and mass
Open and set high pressure reciprocation cycle pump 402 and controllable heater 403, by mud pit 401 according to default ion
Species and the drilling fluid of concentration configuration, inject in vertical straight tube tubing string 101 according to default circulation discharge capacity and temperature.Regulation back pressure
Valve 404, is preset value to control in vertical straight tube tubing string 101 and horizontal straight tube tubing string 102 that pressure is constant.
Observation second pressure table 304 and second temperature table 307, when reading reaches preset value and stablizes constant, driving can
Control telescoping tube 501, thermal insulation insulation flashboard 502 is pulled up, until straight tube tubing string 101 and horizontal straight tube tubing string 102 connect completely vertically
It is logical, now start simulation loop mud filtrate invasion hydrate reservoir.
(3) reservoir change is monitored, mud filtrate invasion dynamic law is analyzed
Collection comprehensive sensor 201, NMR system 202, ultrasonic atomization probe 203, coaxial type TDR probes 204,
First flowmeter 301, second flowmeter 302, first pressure table 303, second pressure table 304, first the 306, second temperature of thermometer
Spending the live signal of table 307, and these signals are converted into corresponding data carries out Treatment Analysis.
Wherein, what comprehensive sensor 201 was recorded is temperature, pressure, the electrical impedance of reservoir diverse location, and reflection drilling fluid is invaded
Reservoir temperature, pressure field and electrical impedance change with time under the conditions of entering.
What NMR system 202 was followed the trail of and recorded is the movement locus of material where default radioactive element, and reflection is bored
Well liquid invade under the conditions of in reservoir original certain predetermined substance bent by decomposition of hydrate, secondary generation and drilling fluid replace influenceed and
The Transport of generation.When occurring physically or chemically to react in reservoir, default radioactive element can be from original place material
It is transformed into new material, monitors its real-time location status, may infer that reservoir internal dynamic and reaction progress.For lifting is accurate
Exactness, once only marks a kind of radioactive element.
The record of ultrasonic atomization probe 203 is that different frequency sound wave is turned back the time used, hydrate in reflection reservoir
Saturation degree and moisture content.
The record of coaxial type TDR probes 204 is the oscillogram drawn after reflection of electromagnetic wave, so as to calculate different positions in reservoir
The dielectric constant put, hydrate concentration and moisture content in reflection reservoir are mutually authenticated with ultrasonic atomization probe 203, so that
Round-off error.
The record of first flowmeter 301 is flow of the drilling fluid into vertical straight tube tubing string 101, and second flowmeter 302 is remembered
What is recorded is the flow that drilling fluid flows out vertical straight tube tubing string 101, can be counted by first flowmeter 301 and second flowmeter 302
Calculate total filter loss of mud filtrate invasion reservoir.
The record of 303 and first thermometer of first pressure table 306 be drilling fluid flow out vertical straight tube tubing string 101 pressure and
Temperature, second pressure table 304 and the record of second temperature table 307 are pressure and temperature of the drilling fluid into vertical straight tube tubing string 102
Degree, by first pressure table 303, second pressure table 304, the first thermometer 306, second temperature table 307 can estimate drilling well
Liquid passes to the gross energy of reservoir.
Sandstone species, the particle diameter of horizontal straight tube tubing string 102 are packed into by changing respectively, multi-pass operation, research storage is carried out
Layer species and influence of the initial porosity to mud filtrate invasion hydrate reservoir behavior dynamic law.
By changing the gas-liquid mixed ratio in gas-liquid mixed feed unit 503, multi-pass operation is carried out, water in Study In Reservoir
The influence of compound saturation degree, void fraction, moisture content to mud filtrate invasion hydrate reservoir behavior dynamic law.
By changing in gas-liquid mixed feed unit 503 carbon isotope (such as C14) in gas molecule, adjustment nuclear-magnetism is total to
The receives frequency of vibrating system 202 carries out real-time tracing to the carbon isotope, and decomposition of hydrate generates the expansion of gas in Study In Reservoir
Dissipate rule.
By changing in gas-liquid mixed feed unit 503 protium isotope (such as H3) in fluid molecule, adjustment nuclear-magnetism is total to
The receives frequency of vibrating system 202 carries out real-time tracing to the hydrogen isotope, and decomposition of hydrate generates the expansion of liquid in Study In Reservoir
Dissipate rule.
By adjusting and reforming the environment temperature and pressure of the horizontal straight tube tubing string 102 of change, carry out multi-pass operation, research different water depth and
Mud filtrate invasion hydrate reservoir behavior dynamic law under water temperature.
By adjusting high pressure reciprocation cycle pump 402 and controllable heater 403, the discharge capacity and temperature of circulating fluid are changed respectively
Degree, carries out multi-pass operation, studies mud filtrate invasion hydrate reservoir behavior dynamic law under different drilling conditions.
By changing the ionic species and concentration of drilling fluid in mud pit 401 respectively, multi-pass operation is carried out, study different brills
Well liquid ionic species and concentration are to mud filtrate invasion hydrate reservoir behavior dynamic law.
Claims (10)
1. the device that a kind of monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property changes, including：Pit shaft-hydrate reservoir
Coupled heat and mass transfer unit and circulation of drilling fluid unit；Characterized in that, pit shaft-hydrate reservoir coupled heat and mass transfer unit
The method being compacted by back-up sand simulates reservoir structure, is hydrated under the conditions of the generation and the mud filtrate invasion that are Hydrate in Porous Medium
The decomposition of thing provides reacting environment with regeneration, and utilization includes temperature pressure sensing, electrical impedance sensing, monitoring ultrasonic, TDR
Monitoring and nuclear magnetic resonance follow the trail of the physical parameter of isotope diverse location in interior various monitoring measures, real time record reservoir
Change；Circulation of drilling fluid unit is used to simulate the circulation of drilling fluid of different drilling parameters, and using the difference of flowmeter before and after circulation
Metering invades drilling well liquid measure.
2. the device that monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1 changes, it is special
Levy and be, pit shaft-hydrate reservoir coupled heat and mass transfer unit, including：Vertical straight tube tubing string, horizontal straight tube tubing string, level are straight
Bobbin post lid plug；Wherein, using circular tubing string, vertically placement, horizontal straight tube tubing string is using circular tubing string, water for vertical straight tube tubing string
Placing flat, vertical straight tube tubing string, horizontal straight tube tubing string are fixedly connected, and vertical straight tube tubing string is divided into upper and lower two by horizontal straight tube tubing string
Cut；Horizontal straight tube tubing string uses compacting back-up sand, and reservoir porosity is changed by adjusting gravel size, for simulation and pit shaft
The one-dimensional hydrate reservoir of radial direction of contact, its one end is connected with vertical straight tube tubing string middle part, and the other end is by horizontal straight tube tubing string lid
Plug closure, the horizontal a length of L of straight tube tubing string, internal diameter is D, and vertical straight tube tubing string is used to simulate connect with reservoir during circulation of drilling fluid
Tactile pit shaft.
3. the device that the monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1-2 changes, its
It is characterised by, horizontal straight tube tubing string equidistantly uniformly installs totally 20 groups of comprehensive sensors, every group of comprehensive biography along horizontal axis direction
Sensor includes 4 probes positioned at same perpendicular, and every probe is disposed radially, and every group of 4 probes are mutually in 90 ° points
Cloth in horizontal straight tube tubing string vertical section, two be vertically arranged, two be horizontally disposed with；2 groups of probes, 2 are carried on every probe
Group probe is respectively apart from horizontal straight tube tubing string inner tubal wall D/5,2D/5, every group of temperature of probe monitors present position, pressure, resistance
It is anti-；Comprehensive sensor outer end is provided with NMR system, is centered around outside the horizontal straight tube tubing string whole body, for following the trail of specific isotope
Diffusion Law in reservoir.
4. the device that the monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1-3 changes, its
It is characterised by, vertical straight tube tubing string position is pressed close on horizontal straight tube tubing string and sets the slideway for being longer than horizontal straight tube tubing string internal diameter vertically,
Controllable telescopic pipe is set in slideway with adiabatic insulation flashboard；Wherein controllable telescopic pipe is rigidly connected with thermal insulation insulation flashboard, controllable
Telescoping tube drives the envelope between the adiabatic insulation complete pair of vertical straight tube tubing string of flashboard and horizontal straight tube tubing string to cut；Thermal insulation insulation lock
Plate is located inside slideway, in T shape with controllable telescopic pipe connecting portion using adiabatic insulating rigid material, forms dynamic with slideway
Sealing.
5. the device that the monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1-4 changes, its
It is characterised by, horizontal straight tube tubing string lid plug uses high pressure resistant cylinder, its same being diametrically provided with the D/6 of the center of circle at two is flowed
Moved end mouthful, for providing fluid Vomitory for horizontal straight tube tubing string；The 3rd pressure gauge is separately installed with two in flowing ports
With the 3rd thermometer, the temperature and pressure of the horizontal straight tube tubing string fluid that comes in and goes out are measured respectively；Flowing ports are exhausted by first at two
Hot pipeline is connected with gas-liquid mixed feed unit, for providing the gas-liquid mixture fluid of abundance for horizontal straight tube tubing string to generate water
Compound.
6. the device that the monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1-5 changes, its
Be characterised by, horizontal straight tube tubing string lid plug the inner circle centre position is provided with coaxial TDR sensing seats, be provided with sensing seat five groups it is coaxial
TDR probes, five groups of coaxial TDR probes L/6,2L/6,3L/6,4L/6,5L/6 long respectively, five groups of coaxial TDR probe levels are fixed
On center line, horizontal straight tube tubing string is equidistantly divided into six parts, for test in different zones hydrate concentration with it is aqueous
The change of rate, analyzes mud filtrate invasion state；Horizontal straight tube tubing string lid plug is provided with ultrasonic atomization probe near circle centre position, uses
In the change of hydrate concentration in testing level straight tube tubing string and moisture content.
7. the device that the monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1-6 changes, its
It is characterised by, circulation of drilling fluid unit, including：Mud pit, high pressure reciprocation cycle pump, controllable heater and back-pressure valve；Mud pit
Be connected with vertical straight tube tubing string upper port by the first adiabatic feed-line, from mud pit to vertical on the first thermal insulation feed-line
Straight tube tubing string upper port is sequentially arranged with first flowmeter, high pressure reciprocation cycle pump, controllable heater, first pressure table, the first temperature
Degree table；Vertical straight tube tubing string lower port is connected by the second adiabatic feed-line with mud pit, on the second adiabatic feed-line certainly
Vertical straight tube tubing string lower port to mud pit is sequentially arranged with back-pressure valve, second pressure table, second temperature table, second flowmeter；Mud
Stock tank fills the drilling fluid of enough specified ionic species and concentration.
8. the device that the monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property according to claim 1-7 changes, its
It is characterised by, coaxial type TDR probes one layer of insulating materials of outside hot compress.
9. it is a kind of monitor deepwater drilling liquid invasion procedure hydrate reservoir physical property dynamic rule method, using claim
The device of deepwater drilling liquid invasion procedure hydrate reservoir physical property change is monitored described in 1-8, it is characterised in that concretely comprise the following steps：
(1) back-up sand gas injection liquid, cooling supercharging simulating hydrate reservoir
Controllable telescopic pipe is driven, thermal insulation insulation flashboard is pushed into horizontal straight tube tubing string bottom, vertical straight tube tubing string and level is straight
Bobbin post is insulated completely；
Horizontal straight tube tubing string lid plug is unloaded, sandstone species and particle diameter is selected according to default reservoir matrix and porosity, to level
Back-up sand in straight tube tubing string is until overflow, the horizontal straight tube tubing string lid plug of installation will then be vacuumized inside horizontal straight tube tubing string；
It is that horizontal straight tube tubing string freezes with immersion method, until the reading of the temperature data of comprehensive sensor acquisition and the 3rd thermometer
Unanimously, reach preset value and stablize constant；
According to default gaseous species, class of liquids and mixed proportion in the required fluid of gas-liquid mixed feed unit configuration, and
Injected in horizontal straight tube tubing string, until the pressure data that comprehensive sensor is obtained is consistent with the 3rd pressure gauge reading, reached pre-
If being worth and stablizing constant, now think that hydrate balances each other under the conditions of having reached this in porous media, supplied according to gas-liquid mixed
The consumption of fluid can estimate hydrate concentration in reservoir in unit；
(2) circulating fluid, simulation invades reservoir heat and mass
High pressure reciprocation cycle pump and controllable heater are opened and set, will be configured according to default ionic species and concentration in mud pit
Drilling fluid, injected in vertical straight tube tubing string according to default circulation discharge capacity and temperature.Regulation back-pressure valve, to control vertical straight tube
It is preset value that pressure is constant in tubing string and horizontal straight tube tubing string；
Observation second pressure table and second temperature table, when reading reaches preset value and stablizes constant, drive controllable telescopic pipe, will
Thermal insulation insulation flashboard pull-up, until straight tube tubing string is connected completely with horizontal straight tube tubing string vertically, now starts simulation loop drilling well
Liquid invades hydrate reservoir；
(3) reservoir change is monitored, mud filtrate invasion dynamic law is analyzed
Collection comprehensive sensor, NMR system, ultrasonic atomization probe, coaxial type TDR probes, first flowmeter, second
Flowmeter, first pressure table, second pressure table, the first thermometer, the live signal of second temperature table, and these signals are converted
For corresponding data carry out Treatment Analysis；
Wherein, what comprehensive sensor was recorded is temperature, pressure, the electrical impedance of reservoir diverse location, reflects mud filtrate invasion condition
Lower reservoir temperature, pressure field and electrical impedance change with time；
What NMR system was followed the trail of and recorded is the movement locus of material where default radioactive element, reflects mud filtrate invasion
Under the conditions of in reservoir original certain predetermined substance bent by decomposition of hydrate, secondary generation and drilling fluid and replace what is influenceed and occurred to move
Move rule；When occurring physically or chemically to react in reservoir, default radioactive element can be transformed into newly from original place material
Material in, monitor its real-time location status, may infer that reservoir internal dynamic and reaction progress；It is the lifting degree of accuracy, one
It is secondary only to mark a kind of radioactive element；
Ultrasonic atomization probes records are that different frequency sound wave is turned back the time used, in reflection reservoir hydrate concentration and
Moisture content；
Coaxial type TDR probe records are the oscillograms drawn after reflection of electromagnetic wave, so as to calculate Jie of diverse location in reservoir
Electric constant, hydrate concentration and moisture content in reflection reservoir are mutually authenticated, so that round-off error with ultrasonic atomization probe；
First flowmeter record is flow of the drilling fluid into vertical straight tube tubing string, and second flowmeter record is drilling fluid stream
Go out the flow of vertical straight tube tubing string, total filter of mud filtrate invasion reservoir can be calculated by first flowmeter and second flowmeter
Vector；
What first pressure table and the first thermometer were recorded is the pressure and temperature that drilling fluid flows out vertical straight tube tubing string, second pressure
What table and second temperature token were recorded is the pressure and temperature that drilling fluid enters vertical straight tube tubing string, by first pressure table, second
Pressure gauge, the first thermometer, second temperature table can estimate the gross energy that drilling fluid passes to reservoir.
10. monitoring deepwater drilling liquid invasion procedure hydrate reservoir physical property dynamic rule according to claim 9
Method, it is characterised in that：
Sandstone species, the particle diameter of horizontal straight tube tubing string are packed into by changing respectively, multi-pass operation is carried out, Study In Reservoir species with
Influence of the initial porosity to mud filtrate invasion hydrate reservoir behavior dynamic law；
By changing the gas-liquid mixed ratio in gas-liquid mixed feed unit, multi-pass operation is carried out, hydrate is satisfied in Study In Reservoir
Influence with degree, void fraction, moisture content to mud filtrate invasion hydrate reservoir behavior dynamic law；
By changing in gas-liquid mixed feed unit carbon isotope (such as C14) in gas molecule, NMR system is adjusted
Receives frequency real-time tracing is carried out to the carbon isotope, in Study In Reservoir decomposition of hydrate generate gas Diffusion Law；
By changing in gas-liquid mixed feed unit protium isotope (such as H3) in fluid molecule, adjustment NMR system
Receives frequency carries out real-time tracing to the hydrogen isotope, and decomposition of hydrate generates the Diffusion Law of liquid in Study In Reservoir；
By adjusting and reforming the environment temperature and pressure of the horizontal straight tube tubing string of change, multi-pass operation is carried out, under research different water depth and water temperature
Mud filtrate invasion hydrate reservoir behavior dynamic law；
By adjusting high pressure reciprocation cycle pump and controllable heater, the discharge capacity and temperature of circulating fluid are changed respectively, carried out many
Secondary operation, studies mud filtrate invasion hydrate reservoir behavior dynamic law under different drilling conditions；
By changing the ionic species and concentration of drilling fluid in mud pit respectively, carry out multi-pass operation, study different drilling fluids from
Subcategory and concentration are to mud filtrate invasion hydrate reservoir behavior dynamic law.
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