CN106289943B - Drilling well disturbs all surrouding rock stress real-time monitoring experimental systems of going into the well - Google Patents

Drilling well disturbs all surrouding rock stress real-time monitoring experimental systems of going into the well Download PDF

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Publication number
CN106289943B
CN106289943B CN201610587177.5A CN201610587177A CN106289943B CN 106289943 B CN106289943 B CN 106289943B CN 201610587177 A CN201610587177 A CN 201610587177A CN 106289943 B CN106289943 B CN 106289943B
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drilling
well
control system
time monitoring
rock stress
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CN106289943A (en
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范翔宇
梁永昌
张千贵
段美恒
郭东亚
赵鹏斐
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Southwest Petroleum University
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Southwest Petroleum University
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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  • Biochemistry (AREA)
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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

Drilling well disturbs all surrouding rock stress real-time monitoring experimental provisions and the system of going into the well, the present invention relates to drilling experiment analogue technique fields, drilling well local relative position borehole wall pressure change can not be obtained by solving the prior art, have ignored the technical problems such as the disturbance for significantly affecting result and the inadequate closer to reality of simulated environment.The invention mainly comprises control system, the drilling rod power output system, drilling simulation system and the filled media measuring instrument that are connect with control system；It further include filled media measuring instrument.The present invention is for rock stress test around underground.

Description

Drilling well disturbs all surrouding rock stress real-time monitoring experimental systems of going into the well
Technical field
The present invention relates to drilling experiment analogue technique fields, and in particular to drilling well disturbs all surrouding rock stress real-time monitorings of going into the well Experimental provision and system.
Background technique
In the recovery process of oil gas, people often extract sample from reservoir and carry out experiment of machanics to reservoir rock Research, the purpose is to determine the properties such as the intensity of rock by various experiment of machanics results, so that it is determined that reasonable drilling well out Liquid Density Window, and then ensure the smooth exploitation of oil gas.
Since the experiment of machanics research at present to reservoir rock is mainly based upon uniaxial compression, pseudo- triaxial compressions and true triaxial It tests to study its mechanical characteristic, stress condition and underground actual conditions have very big difference.Therefore, it measures by this method Rock mechanics parameters reliability be limited.Therefore, in order to solve this problem, " borehole wall deformation under drilling well disturbs has been invented Real-time monitoring experimental system ".
Summary of the invention
For the above-mentioned prior art, it is an object of that present invention to provide drilling wells to disturb all surrouding rock stress real-time monitoring experiments of going into the well Apparatus and system, drilling well local relative position borehole wall pressure change can not be obtained by solving the prior art, had ignored and significantly affected The technical problems such as the inadequate closer to reality of disturbance and simulated environment as a result.
In order to achieve the above objectives, The technical solution adopted by the invention is as follows:
Drilling well disturbs all surrouding rock stress real-time monitoring experimental provisions of going into the well, including
Control system, the drilling rod power output system being connect with control system, drilling simulation system and filled media measurement Instrument；
Filled media measuring instrument, including at least two independent sealed cavitys collectively form a complete hollow cylinder, empty The outer wall of stem body and the borehole wall of drilling simulation system fit, and each independent sealed cavity is provided with to be respectively communicated with it Booster and retracting cylinder.
In above scheme, the filled media measuring instrument is set to the rear portion of drill bit in drilling simulation system.
In above scheme, the booster is connected to control system.
In above scheme, the independent sealed cavity is air cavity, and the booster selects air compressor (to can be Hydraulic oil or other fluids).
In above scheme, the retracting cylinder is connected to control system.
In above scheme, the independent sealed cavity is air cavity, and the retracting cylinder selects gas cylinder.
Drilling well disturbs all surrouding rock stress real-time monitoring experimental systems of going into the well, including
Control system is used for parameter setting and information exchange；
Drilling rod power output system receives the drill bit driving signal of control system output；
Drilling simulation system, the debugging signal for receiving control system output or feedback drilling environment parameter to control system, And its drill bit is driven by drilling rod power output system；
Filled media measuring instrument acquires the borehole wall pressure change signal of local relative position in drilling simulation system and feeds back Pressure value signal is to control system.
In above scheme, the control system, control drilling simulation system inputs or output reservoir fluid.
In above scheme, the drilling simulation system selects true triaxial system, receives three pressure of control system output Signal exports three pressure feedback signals to control system.
In above scheme, the filled media measuring instrument, including
Booster is driven by control system；
Retracting cylinder is driven by control system；
Gas measuring stress instrument, including at least two independent sealed cavitys collectively form a complete hollow cylinder, empty The outer wall of stem body and the borehole wall of drilling simulation system fit, and independent sealed cavity is by booster injected media, also by stretching The opposite borehole wall pressure change of the detection of contracting cylinder independent sealed cavity cavity variation and generation as caused by borehole wall local positions deformation；
The retracting cylinder also sets up the pressure value signal extremely control that corresponding opposite borehole wall pressure change is fed back by air gauge System processed.
Compared with prior art, beneficial effects of the present invention:
(1) relative position at borehole wall pressure change is realized to detect；Since the cavity of gas measuring stress instrument is isolated mould Block is divided into two or more parts, and each part can be carried out independent stress mornitoring, therefore, according to the change of each section stress Change, so that it may determine the pressure change of the borehole wall at deformeter.
(2) dynamic process of real-time monitoring soft rockmass borehole wall deformation；Since the cavity of gas measuring stress instrument is isolated mould Block is divided into two or more parts, and each part can be carried out independent stress mornitoring, therefore, according to each section stress-time Relation curve, so that it may determine that the dynamic of borehole wall pressure at deformeter becomes process.
(3) situation of change of real-time monitoring borehole wall confining pressure stress；Since the cavity of gas measuring stress instrument is isolated module It is divided into two or more parts, and each part can be carried out independent stress mornitoring, therefore, can be monitored in real time at deformeter The willpower situation of change of each part.
(4) experimental situation is made to be more nearly true environment, thus the reliability of Enhancement test result；Experimental system simulation Be the rock around Engineering Disturbance situation is gone into the well stress variation situation, than traditional static test test macro closer to true Real drilling environment, therefore reliability is higher.
(5) by experimental result, optimal drilling fluid density window is provided, to ensure that smoothly completing for drilling well provides effectively Foundation；
(6) it can simulate under more field conditions, the deformation and pressure changing of the reservoir borehole wall.Gu heat-stream-coupling can be simulated Borehole wall deformation and surrouding rock stress situation of change under the conditions of conjunction, in true crustal stress situation, and in Engineering Disturbance.
(7) many factors can be measured (such as: three-dimensional crustal stress, the variation of formation temperature, reservoir fluid pressure, drilling speed The variation of degree etc.) to the deformation of the reservoir borehole wall, the influence of borehole wall stress.
(8) experimental situation keeps experimental result more reliable closer to true environment.Traditional experiment primary concern is that Static measurement, and the influence of Engineering Disturbance is not considered.
(9) dynamic process of borehole wall deformation, stress variation can be measured, determines that drilling fluid density window has to be reasonable Practical significance.
Detailed description of the invention
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is independent sealed cavity structure schematic diagram.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.
The present invention will be further described with reference to the accompanying drawing:
Embodiment 1
This experimental system is as shown in Figure 1,1 is true triaxial experimental system for simulating, and 2 be experiment drill bit, and 3 be gas stress test Instrument, 4 be experiment drilling rod, and 5 be drilling rod power output system, and 6 be air compressor, and 7 be gas cylinder, and 8 is defeated for three pressure informations Enter/export, 9 be reservoir fluid input/output, and 10 be integrated circuit information operation control platform, and totality can be divided into 3 parts It constitutes, down-hole simulation system, the information transfer system and control system.Its work work process are as follows: operating system issues instruction, passes through Instruction is passed to down-hole simulation system by the information transfer system, and under the action of down-hole simulation system, information system is again by information Feed back to operating system.
Working principle: (1) operating system input 1. reservoir primary stress situation be maximum, minimum level crustal stress and on cover Rock pressure value.2. reservoir initial temperature value.3. reservoir pressure etc..(2) information transfer system passes information to reservoir mould Quasi- system.(3) true triaxial compressor pressurizes rock sample at this time, while associated gas is filled with into rock sample, and to rock sample Gas compressor starts to " borehole wall deformation aeration measuring instrument " (work at this time for control system outflow instruction after be heated to preset value Make principle to have explained in patent 1) in be filled with gas, when being filled with gas pressure and reaching predicted value, " borehole wall deformation aeration is surveyed Amount instrument " intake valve is automatically closed, and air outlet valve connect with gas cylinder and is constantly in open state.At this point, operation control system Automatic output order makes " simulation drill bit " rotary drilling, and the registration variation of " gas cylinder " is automatic by operating system always simultaneously Control.
In simulation drilling process, the situation of change of borehole wall stress and strain is operated by the variation of " gas cylinder " registration Platform record, therefore, in the case where reservoir pressure, temperature, crustal stress are constant, so that it may obtain the borehole wall deformation with drilling time and The trends relation curve of rate of penetration.Also available in borehole wall deformation and drilling time, the pass of rate of penetration etc. simultaneously It is curve.
It is now made and being illustrated as schematic diagram tool using Fig. 2.
Independent sealed cavity 14；
Face AFGH, face DEGL --- 1/3 cavity support disk；
Body ABCDEF, body HIKLJG --- cavity support isolation module 13；
Curved surface AHLD --- high-strength flexible elasticity iron sheet；
R, T --- into and out of stomata；
Y --- with barometric booster 12；
M --- with barometric gas cylinder 11；
Face AHGF, HGJL, LGED, ADLH form 1/3 cavity；
Working principle: air inlet R is connect with booster Y, and effect is that constant air pressure is poured in booster Y-direction cavity in advance Determine atmospheric pressure value P0, venthole T is opened simultaneously, the air gauge show value P of gas cylinder M is made0When, close booster Y, that is, air inlet R.Venthole T should be made to be constantly in open state at this time.Cavity is found out by the variation of barometric value on gas cylinder M Interior air pressure change situation.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Belong to those skilled in the art in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, all answers It is included within the scope of the present invention.

Claims (9)

  1. All surrouding rock stress real-time monitoring experimental provisions 1. drilling well disturbance is gone into the well, which is characterized in that including
    Control system, the drilling rod power output system being connect with control system, drilling simulation system and filled media measuring instrument；
    Filled media measuring instrument, including at least two independent sealed cavitys, collectively form a complete hollow cylinder, open tubular column The outer wall of body and the borehole wall of drilling simulation system fit, and each independent sealed cavity is provided with the boosting being respectively communicated with it Pump and retracting cylinder；
    The filled media measuring instrument, is set to the rear portion of drill bit in drilling simulation system.
  2. All surrouding rock stress real-time monitoring experimental provisions 2. drilling well disturbance according to claim 1 is gone into the well, which is characterized in that institute The booster stated, is connected to control system.
  3. All surrouding rock stress real-time monitoring experimental provisions 3. drilling well disturbance according to claim 2 is gone into the well, which is characterized in that institute The independent sealed cavity stated is air cavity, and the booster selects air compressor.
  4. All surrouding rock stress real-time monitoring experimental provisions 4. drilling well disturbance according to claim 1 is gone into the well, which is characterized in that institute The retracting cylinder stated, is connected to control system.
  5. All surrouding rock stress real-time monitoring experimental provisions 5. drilling well disturbance according to claim 4 is gone into the well, which is characterized in that institute The independent sealed cavity stated is air cavity, and the retracting cylinder selects gas cylinder.
  6. All surrouding rock stress real-time monitoring experimental systems 6. drilling well disturbance is gone into the well, which is characterized in that including
    Control system is used for parameter setting and information exchange；
    Drilling rod power output system receives the drill bit driving signal of control system output；
    Drilling simulation system, the debugging signal for receiving control system output or feedback drilling environment parameter to control system, and by Drilling rod power output system drives its drill bit；
    Filled media measuring instrument acquires the borehole wall pressure change signal and feedback pressure of local relative position in drilling simulation system Value signal is to control system.
  7. All surrouding rock stress real-time monitoring experimental systems 7. drilling well disturbance according to claim 6 is gone into the well, which is characterized in that institute The control system stated, the input of control drilling simulation system or output reservoir fluid.
  8. All surrouding rock stress real-time monitoring experimental systems 8. drilling well disturbance according to claim 7 is gone into the well, which is characterized in that institute The drilling simulation system stated selects true triaxial system, receives three pressure feedbacks of three pressure signals or output of control system output Signal is to control system.
  9. All surrouding rock stress real-time monitoring experimental systems 9. drilling well disturbance according to claim 6 is gone into the well, which is characterized in that institute The filled media measuring instrument stated, including
    Booster is driven by control system；
    Retracting cylinder is driven by control system；
    Gas measuring stress instrument, including at least two independent sealed cavitys, collectively form a complete hollow cylinder, open tubular column The outer wall of body and the borehole wall of drilling simulation system fit, and independent sealed cavity by booster injected media and also passes through retracting cylinder The opposite borehole wall pressure change for detecting the independent sealed cavity cavity variation as caused by borehole wall local positions deformation and generating；
    The retracting cylinder also sets up and feeds back the pressure value signal of corresponding opposite borehole wall pressure change by air gauge to controlling and be System.
CN201610587177.5A 2016-07-25 2016-07-25 Drilling well disturbs all surrouding rock stress real-time monitoring experimental systems of going into the well Active CN106289943B (en)

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CN107195240B (en) * 2017-08-01 2019-06-28 深圳市鹰硕技术有限公司 A kind of teaching simulation apparatus for demonstrating for professional skill field
CN111720173A (en) * 2020-06-30 2020-09-29 上海应用技术大学 Contact roadway surrounding rock load detector and roadway excavation load detection method
CN112081575B (en) * 2020-09-10 2022-09-13 西南石油大学 Multi-field coupling coal bed gas well surrounding rock deformation visual simulation device and method

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CN2432575Y (en) * 2000-07-28 2001-05-30 山东科技大学资源与环境工程学院 Directly-measuring type bolt-spray tunnel concrete layer strength monitor
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Publication number Priority date Publication date Assignee Title
CN2432575Y (en) * 2000-07-28 2001-05-30 山东科技大学资源与环境工程学院 Directly-measuring type bolt-spray tunnel concrete layer strength monitor
CN102242630A (en) * 2011-01-30 2011-11-16 山东科技大学 Pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as monitoring method of monitoring device
CN202182790U (en) * 2011-08-09 2012-04-04 天地科技股份有限公司 Borehole stressmeter with adjustable diameter
CN104729969A (en) * 2015-03-23 2015-06-24 中国电建集团华东勘测设计研究院有限公司 Surrounding rock stress disturbing degree test device
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CN105606278A (en) * 2016-03-11 2016-05-25 北京科技大学 Drill hole monitoring probing rod for surrounding rock stress field

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