WO2018018660A1

WO2018018660A1 - Interactive stability display system for estimation of rock slope

Info

Publication number: WO2018018660A1
Application number: PCT/CN2016/094082
Authority: WO
Inventors: 赵龙
Original assignee: 深圳朝伟达科技有限公司
Priority date: 2016-07-29
Filing date: 2016-08-09
Publication date: 2018-02-01
Also published as: CN106291744A

Abstract

An interactive stability display system (100) for a rock slope, the system comprising: a display screen (102), a processor (107), a storage system (108), and a user input device comprising a keyboard (104) and a clicking device (106). Further provided is a display method for an interactive stability display system for a rock slope. By means of the display system and the implementation method, the stability prediction of the rock slope can be obtained, an optimal selected pressure drop can be obtained according to the stability prediction, the optimal selected pressure drop is used for production, and the problems occurring in the detection of a drilling or production process can be displayed in real time, so that safe production can be ensured.

Description

Rock slope estimation interactive stability display system

Technical field

The present invention relates to a stability display system for a slope, and more particularly to a system for displaying stability by estimating the manner of interaction.

Background technique

Slope is a form of landform widely distributed on the surface. The study of slope stability has always been the focus of research in geotechnical engineering. There are many types of slopes, including natural slopes and artificial slopes. According to lithology, they can be divided into rock slopes and soil slopes. Due to the great harm of slope instability and widespread in the world, the instability of slopes is included in one of the major geological disasters worldwide, and its key research. Deformation and damage of rock slopes often cause extremely serious loss of life and property to human engineering activities. So far, the methods used for slope stability analysis can be roughly divided into two categories: qualitative analysis methods and quantitative analysis methods. Qualitative analysis methods include engineering analogy and graphic methods (red-level polar projection, solid proportional projection, friction circle method, etc.). Quantitative analysis methods mainly include limit equilibrium method, limit analysis method (finite element method), boundary element method and discrete element method. Etc., as well as reliability analysis methods. The prior art evaluation methods for rock slope stability are mostly directed to a certain topic, or a method of analysis and evaluation with a single research method. There are relatively few systematic and comprehensive integrated analysis and evaluation methods. There are also many problems: if the geological environment conditions of rock slopes are neglected, it is impossible to obtain accurate prediction of rock slope stability, and it is impossible to obtain the optimal pressure drop according to stability prediction, so that the most The top pressure drop is preferably produced, and the problems occurring during the drilling process or the production process cannot be displayed in real time, and production safety cannot be guaranteed.

Summary of the invention

It is an object of the present invention to provide an interactive stabilization display system for rock slopes comprising: a display screen, a processor, a storage system and user input devices, including a keyboard and a pointing device.

Preferably, the interactive stable display system is implemented on a personal computer.

Preferably, the interactive stable display system is programmed in Matlab or in C++.

Preferably, the display screen is a two-dimensional personal computer display or an LCD notebook screen, the display screen including a large number of windows or other information related to the operation of the personal computer program or process.

Preferably, the keyboard is a notebook keyboard, and the click device is a mouse, a track pad, a trackball, a joystick or other pointing device available for a personal computer.

Preferably, one of the main windows displayed on the display screen is a graphics window, and the graphics window includes a three-dimensional display and parameter information.

Preferably, the three-dimensional display displays to the user three-dimensional reproduction of the rock slope stability information around the wellbore, the three-dimensional display comprises: a bounded frame to assist in three-dimensional positioning; a north/east/lower coordinate system display module; a stress orientation and correlation Amplitude display module; a hemispherical grid for guiding the user to locate the wellbore portion; and a wellbore portion display module.

Preferably, the output of the instability prediction displayed by the three-dimensional display comprises: three main stress amplitudes in a certain depth of soil; an orientation associated with the north; pore pressure; rock slope strength, friction angle and Poisson Ratio; well azimuth and offset and liquid pressure in the pores.

Another object of the present invention is to provide a display method for an interactive stabilization display system for rock slopes, comprising the following steps:

(1) The program initializes and reads out a set of default parameters from the memory that were originally obtained from the Earth model or may be established based on the particular region to be used;

(2) Predicting the stability of rock slope around the wellbore based on existing parameters, specifically implementing stability calculation based on default parameters;

(3) using a three-dimensional display to display the predicted stability of the rock slope around the wellbore in real time, and the delay time of recalculating and redisplaying in real time based on the artificial operation to change the range of the wellbore portion is less than 2 seconds or less than 0.2 seconds;

(4) Determine whether the parameters are used to give an appropriate result for the stability of the rock slope around the wellhead. The user determines based on the visual graphics and the stability information displayed on the three-dimensional display and the existing parameters, if existing The parameters are not appropriate, the user will change the input by moving the click device in step (6). Entering the parameters, and/or changing the parameter values in the data input box to recalculate. If the user determines that the current parameters are appropriate, the user continues the remaining drilling process in step (5);

(5) If the parameters are appropriate, continue the remaining drilling process;

(6) If the existing parameters are not appropriate, change the input parameters by moving the pointing device, and/or change the parameter values in the data input box to recalculate.

Preferably, the method further comprises the steps of: the user indicates the acceptability of the parameter to the computer program, the computer program records and saves the existing parameters for future use, or the user manually records the appropriate parameters or electronically records the other locations on the computer. .

Preferably, the process of using the floor plan display and the drilling step includes:

(1) loading at least some parameters used by the interactive display from an existing earth model, the parameters from the earth model being used to obtain some or all of the initial parameters;

(2) obtaining selected orientation and/or soil weight parameters from the interactive display for constructing or modifying the well plan;

(3) modifying the plane trajectory to combine one or more preferred orientations or combining the orientations close to one or more preferred orientations into one existing well plan according to the orientation and/or soil weight obtained in step (2) ;

(4) Oil well drilling using constructed or modified oil well plans.

Preferably, it also includes for drilling operations

(1) In drilling, the fluid pressure input from the known azimuth and measurement is used as an interactive display parameter, or other parameters from the earth model are used;

(2) Rock slope rupture prediction from an interactive display is compared with information obtained from RAB records or other imaging tools, where the information comes from the well during the drilling process, and if there is an inconsistency between the measured and predicted information, then Or update the Earth model, or modify the oil well plan, or do it in two steps;

(3) Drill the remaining portion of the well using the modified oil well plan.

Preferably, the prediction of the rock slope around the wellbore includes:

(1) inputting the orientation of the known open hole portion and the measured fluid pressure to the interactive display along with data from the earth model;

(2) Obtaining the stability prediction of rock slope from the open hole, and obtaining the optimal selected pressure drop according to the stability prediction;

(3) using the most preferred top pressure drop for production;

(4) Use interactive stable display to detect problems in the drilling process or in the production process.

Preferably, the above step (4) comprises using an interactive stable display to help assess where the fracture may occur, including the location of the depth and the circumferential direction, if it is suspected that a rock slope breaks within the open portion of the wellbore during production. And the results, including the breakage of the screen, or the rupture of the gravel pack.

The rock slope interactive stable display device and method provided by the invention can obtain the rock slope stability prediction from the open hole well, obtain the optimal selected pressure drop according to the stability prediction, and use the most The pressure drop of the top is preferably produced, and the problems occurring in the drilling process or the production process are detected in real time to ensure safe production.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.

Figure 1 shows an interactive stability display in accordance with a preferred embodiment of the present invention;

Figure 2 illustrates features of a display screen in accordance with a preferred embodiment of the present invention;

Figure 3 is a flow chart showing the processing implemented on a computer in accordance with the present invention;

Figure 4 is a flow chart showing the planning and drilling steps in accordance with a preferred embodiment of the present invention;

Figure 5 illustrates the implementation of a plan for generating a well and drilling in accordance with a preferred embodiment of the present invention. Interactive stability display;

Figure 6 shows a portion of an interactive stability display in accordance with another embodiment of the present invention;

Figure 7 shows a flow chart for making a complete plan and drilling steps in accordance with an embodiment of the present invention.

detailed description

In accordance with a preferred embodiment of the present invention, an interactive display device is provided that is capable of directly and graphically displaying a situation in which a rock slope around a wellbore is in a predicted fracture state, using a three-dimensional image display and a "click and drag" interface change The orientation of the well can also be simply selected from the earth parameters and drilling parameters. Shows the difference between boreholes in different directions and different angles for fast and accurate transfer, as well as the effect of soil weight changes on borehole differences, the difference between in situ pressure and rock slope characteristics. It can also be used as an interactive tool for comparing predicted deformation modes with respect to drilling data, such as establishing upper and lower limits of stress states. According to one embodiment, an oilfield service engineer responsible for designing a well for a customer will display a full function instability predictor. According to this embodiment, the user can change any of the parameters.

According to another embodiment, the oil field owner or operator uses the display device. According to this embodiment, some or all of the earth parameters as well as the rock slope parameters are input through the circuit, and the user is only allowed to modify the mine orientation, soil weight and a limited number of other parameters. For example, a user can view a three-dimensional display on their own computer to check the effects of changes in the orientation of the well, but only change the stress state.

The borehole instability predictions shown in accordance with the present invention are preferably based on calculations of stress states around the wellbore and calculations of the response of the rock slope to these stresses. More preferably, the prediction is based on the elastic modulus of the rock slope behavior, which is originally conservative, but the method has significant advantages in view of speed, clarity, and required rock slope data. Various types of mechanical models can be used, such as some complex rock slope models that consider plasticity. According to the invention, an elastic model is preferred because the plastic calculation around the wellbore is time consuming. However, in some cases, the response time is not as important or the processing energy is high, and more complex models can be used, such as in the case of plasticity. In accordance with the present invention, relatively fast response times are an important feature of interactive displays, so the user can see the results of instability calculations as the wellbore moves around. Fast response time advantageously increases display availability And the appeal of displaying between a wide range of users.

Figure 1 shows an interactive stable display in accordance with a preferred embodiment of the present invention. The interactive stable display system 100 includes a display screen 102, a processor 107, a storage system 108, and user input devices, including a keyboard 104 and a pointing device 106. According to a preferred embodiment, interactive display 100 is implemented on a personal computer, and more preferably on a hand-held personal computer. The interactive stable display 100 can be programmed, for example, using the Matlab language, preferably directly using, for example, C++ programming. Display screen 102 is a two-dimensional personal computer display, and more preferably an LCD notebook screen. Display screen 102 includes a number of windows or other information related to operation in a personal computer program or process. Considering that the interactive display 100 on a notebook computer can greatly increase the range of user work environments, the keyboard 104 is preferably a notebook keyboard. The click device 106 is preferably a mouse, track pad, trackball, joystick, but alternatives are other pointing devices available to the personal computer.

Figure 2 illustrates a display screen feature in accordance with a preferred embodiment of the present invention. One of the main windows displayed on display screen 102 is graphics window 110. The graphics window 110 primarily includes a three-dimensional (3-D) display 112 and parameter information 114. The terms "three-dimensional display", "three-dimensional reproduction" and "3-D display" as used herein include real three-dimensional display technology (eg, volume display holographic display), stereoscopic three-dimensional display, and three-dimensional (eg, perspective projection and parallel projection). The two-dimensional reproduction. According to a preferred embodiment, the 3-D display 112 is a parallel projector. The advantage of this instrument is that it does not require a high level of processing energy or special hardware other than a normal personal computer monitor. The 3-D display shows the user a three-dimensional reproduction of the rock slope stability information around the wellbore. The 3-D display preferably means that the bounded frame 116 assists in 3-D positioning; the fold line 120 as shown is a north/east/lower coordinate system; the orientation and associated amplitude of the primary stress are represented by the axis 128; The grid 118 is used to guide the user in positioning the wellbore portion 124; and the wellbore portion 124, the orientation of which may vary with the movement of the pointing device 106 with the small ball 122 (preferably in a bright color) as the handle. The wellbore portions shown are preferably opposite segments, including rock slope characteristics, and the azimuth and soil weight parameters do not vary in the length direction of this portion. This allows for quick recalculation of relevant predictive stable information. For example, it has been found that a 1 meter long portion is more suitable. The appropriate length is usually determined in part by the specific rock slope difference around the wellbore. However, if you can Get enough calculation speed, the part of the wellbore used can be longer, and the upper limit is the entire length of the well. It is also preferred that the width and length ratio of the wellbore display portion remain unchanged to improve instability. In practice, if the aspect ratio shown is locked, then the portion less than 5 meters is the preferred length.

Button 134 is used to rotate the axis to manipulate the viewing angle. It should be understood that the button 134 can also be used to display a floor plan for the user. It is important that the 3-D display 112 show a prediction that the rock slope around the wellbore portion 124 is in a stable (or unstable) state. This information is preferably displayed on the contoured surface of the portion of the wellbore, wherein the surface portions are colored differently to indicate the predicted stability around the corresponding rock slope. For example, the shaded portion of the contoured surface 126 in Figure 2 is preferably displayed in red, while the non-shaded portion is shown in blue. In the example shown in Figure 2, the red shaded portion 126 clearly indicates to the user that fractures of the rock slope can be predicted at these portions of the rock slope around the wellbore.

The parameter information portion 114 of the display includes a plurality of blocks for accessing and displaying different parameters related to the stability of the rock slope around the wellbore, preferably including: stress amplitude and orientation, rock slope strength parameters, and true vertical depth. The true vertical depth is preferably only used to convert fluid density (eg, soil weight) to fluid pressure (eg, earth pressure). The parameter information portion 114 also includes blocks that can be used to display and convert wellbore azimuth and offset as well as soil weight. However, according to a preferred embodiment, these parameters can be easily modified using the three-dimensional display 112 and the soil weight slider, respectively, and the parameter values are displayed using block 130. Although the parameter information portion 114 is shown for displaying certain preferred parameters, other parameters may also be displayed and/or manipulated by the user, such as rock slope plasticity parameters, fluid flow rate, temperature, chemistry, and electricity, according to other embodiments. Chemical properties and time since the start of drilling.

According to a preferred embodiment, the output of the instability prediction displayed by the 3-D display 112 includes: three major stress magnitudes in the soil of a certain depth involved; the orientation associated with the north; pore pressure; rock slope strength , friction angle and Poisson's ratio; azimuth and offset of the well and liquid pressure in the pore (eg, earth pressure). These parameters are used to transfer the in-situ pressure field to the wellbore coordinate system; then calculate the stress concentration around the wellbore portion, preferably using an elastic model; then the maximum and minimum local principal stresses and appropriate fracture criteria (eg, Moore- The Coulomb standard) results in a function that represents the extent to which the local stress state exceeds the strength of the rock slope; in short, whether the rock slope is broken or not What is the degree of breakage. The function is evaluated by points of the circumferential portion of the plurality of wellbore and displayed to the user in real time through the shaded area, such as the shaded portion 126 of the wellbore portion 124 in the 3-D display 112.

When the parameters change, or the portion of the wellhead orientation changes, the equations around the wellbore under stress and fracture conditions are recalculated, and the color shaded region 126 of the wellbore portion 124 is redrawn according to the fracture function value. Although any staining map can be used, the present invention preferably utilizes colors that the user can quickly and clearly distinguish. According to the preferred staining diagram, as the fracture function is from a negative or zero (no fracture occurs under local stress conditions) to a small positive value (slight rock slope fracture) to a larger positive value (severe rock edge The slope of the slope changes from blue to lavender to red. Since the calculation is preferably performed using the elastic model, the calculation speed is fast, so the wellbore color map indicating the fracture state is updated as the wellbore portion driven by the mouse movement moves, and has a high degree of interaction with the user.

According to another embodiment, the surface shape around the wellbore is deformed, i.e., the cross-sectional shape of the surface is no longer rounded, in order to show the user the severity of the rock slope. Due to the simple shading method, the movement of the wellbore can change very quickly. The shape deformation method can be used alone or preferably together with the shaded shadow method.

Since the display includes the degree of potential damage and the orientation of the wellbore, the method can be used as an inspection tool and demonstrate the effect of drilling in different orientations, and with different soil weights, an image record representing the degree of damage to the wellbore can also be analyzed, for example Specific resistance in point (RAB) records. The analysis of the damage location can help distinguish the azimuth and amplitude of the main stresses in the soil.

Figure 3 shows a flow chart of some of the processing steps performed on a computer in accordance with the present invention. In step 210, the program initializes and reads a set of default parameters from memory. These default parameters were originally obtained from the Earth model or may be established based on the particular region to be used by the present invention. In step 212, the rock slope stability around the wellbore is predicted based on existing parameters. After the initial step 210, the stability calculation is performed based on the default parameters in step 212.

In step 214, the 3-D display is used to indicate to the user the predicted stability of the rock slope around the wellbore, preferably as described with respect to FIG. As discussed above, the basic operation of predicting stability is performed, and the predetermined stability is displayed in real time so that the display has a high degree of interaction. In particular, the wellbore is made based on human operation. The delay time of the partial range change and real time recalculation (and preferably redisplay) is preferably less than 2 seconds, more preferably less than 0.2 seconds.

In step 216, it is necessary to determine if the parameters are used to give an appropriate result to the rock slope stability of the surrounding portion of the wellhead. The user preferably makes the determination based on the visual graphics and the stability information displayed on the 3-D display as well as the existing parameters. If the existing parameters are not appropriate, the user may change the input parameters by moving the pointing device at step 220, such as by changing the orientation of the well or the weight of the soil, and/or changing the parameter values within the data entry box. If the user determines that the current parameters are appropriate, the user continues the remaining drilling process in step 218. The user preferably indicates the acceptability of the parameters to the computer program, which records and saves the existing parameters for future use. Alternatively, the user manually records the appropriate parameters or electronically records at other locations on the computer. In fact, since the parameters are usually set by the drilling environment, the user is most interested in the soil weight and the trajectory of the wellbore.

4 is a flow chart showing a plan view display and drilling steps in accordance with some embodiments of the present invention. In step 319, at least some of the parameters used by the interactive display are loaded from the existing earth model. In step 312, the user uses an interactive display. In this case, the parameters from the earth model are used for some or all of the initial parameters in step 210 of FIG. In step 314, the selected or preferred parameters are typically azimuth and/or soil weight, obtained from an interactive display. The preferred orientation and/or soil weight in step 318 is used to construct or modify the oil well plan. For example, based on the preferred azimuth obtained in step 314, the planar trajectory is modified to merge one or more preferred orientations, or to merge one or more preferred orientations into one existing well plan. Finally, in step 320, oil well drilling is performed using the constructed or modified oil well plan.

According to another embodiment of the invention, an interactive stable display is used in a drilling operation. In drilling, the known azimuth in step 322 and the measured fluid pressure (in this case, earth pressure) are input as interactive display parameters. Other parameters from the Earth model can also be used (step 310). In step 312 the user uses an interactive display. In step 324, the rock slope rupture prediction from the interactive display is compared to information obtained from RAB recordings or other imaging tools, where the information comes from the well during the drilling process. If there is an inconsistency between the measured value and the predicted information, then or even more New Earth model, or modify the oil well plan, or do it in two steps. In step 328, the remaining portion of the well is drilled using the modified oil well plan.

In accordance with another embodiment of the present invention, an interactive display can be used to predict rock slope stability within the openings during production. According to this embodiment, the orientation of the apertured wellbore portion and the measured fluid pressure (in this case the pressure of the production fluid) are known to be input to the interactive display along with data from the earth model in step 322. An interactive display is used in step 312. In step 330, the rock slope stability prediction is obtained from the open hole. A preferred or selected pressure drop is obtained based on stability predictions, and in step 332, production is performed using a preferred pressure drop.

Alternatively, in accordance with another embodiment, in step 334, interactive stabilization displays can be used to detect problems that occur during the drilling process or during production. For example, if it is suspected that a rock slope breaks in the bore portion of the wellbore during production, an interactive stability display can be used to help assess where the break may occur (depth and perimeter orientation) and results (eg, broken screen) , or the rupture of the gravel pack).

Figure 5 shows a block diagram of the use of an interactive stable display for generating a well plan and drilling a well in accordance with a preferred embodiment of the present invention. According to this embodiment, the interactive stable display 100 is run on a notebook computer. The interactive stabilization display 100 obtains at least some parameters for predicting the stability of the rock slope around the wellbore from the earth model stored in the storage system 412 of the computer system 410. The computer system 410 can be directly connected to the notebook via a network connector or a dial-up connector, or can be connected via a wireless connection. Additionally, the connection between computer system 410 and the notebook computer may be permanent, but it is preferred to temporarily establish a connection for downloading initialization parameters and settings and recording and storing output parameters such as azimuth and/or soil weight. In some cases, a certain value in the earth model may be updated based on results from the interactive stable display 100.

The azimuth and/or soil weight selected to construct or modify the oil well plan is selected as described above. The oil well plan may be on another computer 420, as shown in Figure 5, or using the same laptop as display 100, and may be produced and used in hard copy form. In accordance with the present invention, the oil well plan view 412 on the computer 420 is then used.

Figure 6 shows an interactive stable display portion in accordance with another embodiment of the present invention. In particular, the window 510 is used when planning the location and arrangement, or when adjusting the phase, or when drilling in the well refinement process to establish fluid flow between the surrounding reservoir rock and the conductors in the wellbore for the fluid being produced. Many of the features of window 510 are described with reference to Figure 2 above. According to a preferred embodiment, the outer surface of the wellbore portion 124 is not a shaded region, but each bore 520 is colored separately according to the predicted stability surrounding the borehole rock slope. The surface of the wellbore portion 124 generally does not require any shaded shadow areas because the wellbore is typically closed when drilling.

The bore 520 can generally be arranged and repositioned according to portions of the wellbore, preferably by clicking on the borehole and dragging the borehole to a new location. Users can also add new drill holes through menus or similar methods. Other techniques can also be used to add, delete, and move drill locations including: menus, radio buttons, and the like. Another option for changing the drilling arrangement is to provide the user with some or all of the drilling around the central axis of the wellbore portion.

According to a preferred embodiment, the borehole is often positioned at a position perpendicular to the centerline of the wellbore portion, as this enables most of the borehole to be commercially manufactured if not all. However, in accordance with another embodiment of the present invention, the interactive display allows for a change in the tilt and azimuth of the borehole relative to the centerline of the wellbore portion, which angle is initially set at 90 degrees. According to another embodiment, the length of the borehole can be changed from the initial value by right clicking on the borehole and entering a value on the popup menu. According to another embodiment, a right click can select a borehole, and then from the menu the user can choose to view the details of the borehole in a similar manner to the wellbore portion 124 and shaded region 126 display of Figure 2, except when the surface and shadow are selected. Set the borehole instead of the stability of the wellbore.

Figure 7 shows a flow chart for making a complete plan and drilling in accordance with one embodiment of the present invention. At least interactive display is used in step 330 to draw parameters of the borehole downloaded from the existing earth model. In step 332, the user uses an interactive display that draws holes. The parameters are selected or preferred in step 334, and it is generally preferred to obtain the position and orientation of the borehole from the interactive display. The preferred drilling position and orientation in step 338 is used to construct and modify the complete plan. Finally, in step 340, a full plan view is used for drilling. It should be understood that the embodiment shown in Figure 5 and the above description can also be used to map the borehole plan for the well. In the example.

The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims

A rock slope interactive stability display system (100), characterized by comprising:

Display (102),

Processor (107),

Storage system (108), and

The user input device includes a keyboard (104) and a pointing device (106).
A rock slope interactive stability display system (100) according to claim 1, wherein said interactive stability display system (100) is implemented on a personal computer.
The rock slope interactive stability display system (100) according to claim 1, wherein the interactive stability display system (100) is programmed in Matlab language or in C++.
A rock slope interactive stability display system (100) according to claim 1, wherein said display screen (102) is a two-dimensional personal computer display or an LCD notebook screen, said display screen ( 102) Includes a large number of windows or other information related to the operation of a personal computer program or process.
The rock slope interactive stability display system (100) according to claim 1, wherein the keyboard (104) is a notebook keyboard, and the click device (106) is a mouse, a track pad, Trackballs, joysticks or other pointing devices available on personal computers.
A rock slope interactive stability display system (100) according to claim 1, wherein a main window displayed on the display screen (102) is a graphic window (110), the graphic window (110) includes a three-dimensional (3-D) display (112) and parameter information (114).
A rock slope interactive stability display system (100) according to claim 6, wherein said three-dimensional display (112) displays to the user three-dimensional reproduction of rock stability information around the wellbore, The three-dimensional display includes: a bounded frame (116) to assist in three-dimensional positioning; a north/east/lower coordinate system display module; a stress orientation and associated amplitude display module; a hemispherical mesh (118) for reference The user is positioned to locate the wellbore portion (124); and the wellbore portion (124) displays the module.
A rock slope interactive stable display system (100) according to any of claims 6-7, characterized in that the output of the instability prediction displayed by the three-dimensional display (112) comprises: Three major stress amplitudes in deep soil; azimuth associated with the north; pore pressure; rock strength, friction angle and Poisson's ratio; azimuth and offset of the well and liquid pressure in the pore.