CN113338804B - Control method for guide hole track of inclined shaft - Google Patents
Control method for guide hole track of inclined shaft Download PDFInfo
- Publication number
- CN113338804B CN113338804B CN202110809986.7A CN202110809986A CN113338804B CN 113338804 B CN113338804 B CN 113338804B CN 202110809986 A CN202110809986 A CN 202110809986A CN 113338804 B CN113338804 B CN 113338804B
- Authority
- CN
- China
- Prior art keywords
- phi
- guide hole
- drilling
- well
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 76
- 238000010276 construction Methods 0.000 claims abstract description 36
- 238000012937 correction Methods 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 22
- 241000209094 Oryza Species 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 8
- 235000009566 rice Nutrition 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000009412 basement excavation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
- E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/10—Correction of deflected boreholes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/05—Geographic models
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Software Systems (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Geometry (AREA)
- Electromagnetism (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Graphics (AREA)
- Acoustics & Sound (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a slow inclined shaft guide hole track control method. Comprising the following steps: building a three-dimensional model of a guide hole and an inclined shaft, selecting a directional drilling machine to drill the guide hole, measuring by adopting an MWD inclinometer to obtain a well inclination angle P and a well inclination azimuth angle phi, measuring by adopting an RMRS rotating magnetic field ranging system to obtain a magnetic deviation angle delta, obtaining a Gaussian plane meridian convergence angle gamma, calculating corrected azimuth angle phi 'and phi+delta-gamma, calculating coordinates of measuring points X1 and Y1, taking an ABS (phi') angle-phi as a judgment, carrying out deviation correcting operation, and controlling a drilling track to reduce drilling deviation. The invention combines the MWD wireless inclinometry while drilling technology and the RMRS rotating magnetic field ranging technology to obtain the wireless inclinometry accurate positioning deviation while drilling, the deviation slope of the guide hole can be controlled between 0.1 and 0.5 percent, the accurate positioning of the reverse well drilling in the 25-35-degree slow inclined well construction can be realized, the deviation while drilling can be corrected, the blank of the high-precision inclinometry and deviation correction in the slow inclined well guide hole construction can be filled, and the high-precision slow inclined well guide hole drilling construction can be realized.
Description
Technical Field
The invention relates to a slow inclined shaft excavation guide hole track control technology, belongs to inclined shaft excavation engineering precision control and construction technology, and particularly relates to a slow inclined shaft guide hole track precision control method with an inclination angle of 25-35 degrees.
Background
In water conservancy and hydropower and mine engineering, the underground cavern is widely applied to inclined wells due to the requirements of water channels, cables, ventilation, traffic and the like. The construction difficulty of the inclined shaft tunneling, particularly the construction of the gentle slope inclined shaft in the hydropower project is high, and a great amount of problems in the construction of the gentle slope inclined shaft are solved by adopting corresponding construction technical measures and technical research results.
For inclined shaft construction, flat holes or guide rails-mining method construction cannot be adopted, and the safety of construction excavation and support cannot be guaranteed due to the large inclination angle, so that the construction efficiency is low; by adopting the back-well method for construction, the construction angle of the existing back-well drilling machine is generally 60-90 degrees, the gentle slope inclined well exceeds the construction range of the back-well drilling machine, the construction safety and the quality are not ensured, and a series of problems such as difficult slag sliding, drilling deviation and the like can occur. As the inclination angle of the inclined shaft with the gentle inclination angle is smaller, the directional drilling machine drill rod can generate vertical component force and the weak interlayer can generate oblique component force, so that the drill rod can generate additional downward or oblique acting force, the drilling machine can generate additional downward acting force, the guide hole can be objectively caused to develop downwards or obliquely to cause deviation of the guide hole besides axial drilling, a curve is formed, the guide hole is deviated, the guide hole is difficult to accurately penetrate, and the accuracy of the guide hole is related to success or failure of construction of the inclined shaft with the gentle inclination angle.
The guide hole drilling of the traditional water conservancy and hydropower industry adopts a drill bit, a centralizer and a common drill rod, the structure is simple, the positioning and deviation correcting functions are not achieved, for a slow inclined shaft of 25 degrees to 35 degrees, the reverse well method is adopted for construction, the deviation gradient industry standard of the traditional reverse well drilling machine is 1%, the depth of the slow inclined shaft in partial engineering is larger, the accuracy requirement of the guide hole track is higher, and the deviation rate requirement is far lower than 1%, so that various deviation preventing and correcting measures are needed to be adopted in the construction process, and the guide hole track of the slow inclined shaft is controlled, so that the construction of the high-accuracy guide hole is ensured. The guide hole track of the slow inclined shaft is difficult to control by the traditional construction method, the construction precision requirement of the long slow inclined shaft cannot be met, and the difficulty of ensuring the deflection gradient is high.
Related terms commonly used in inclined shaft construction:
slow inclined shaft: an underground cavity with inclined wells between a flat hole and a vertical shaft, wherein the slow inclined well is an inclined well with an inclination angle lower than 45 degrees.
Guide holes: the portion of the inclined shaft section where the area is smaller to be excavated first is called a guide hole.
Reverse well method: and excavating the inclined shaft from bottom to top, and excavating reverse full-section blasting.
Disclosure of Invention
The invention discloses a slow inclined shaft guide hole track control method according to the defects of the prior art. The invention provides a guide hole track precision control method for a slow inclined shaft directional drilling machine, which solves the problem of deviation of a conventional slow inclined shaft guide hole when drilling along a preset inclination angle, and ensures the track precision of the slow inclined shaft guide hole.
The invention is realized by the following technical scheme:
the slow inclined shaft guide hole track control method is characterized by comprising the following steps of:
step one: determining a preset track of the guide hole, and establishing a three-dimensional model of the guide hole and the inclined shaft;
step two: selecting a directional drilling machine, an inclinometer, a magnetic measuring instrument and a deviation correcting combined drilling tool for construction;
step three: the total station lofting guide hole enters a drilling point and a direction point, and the directional drilling machine is positioned for guide hole drilling;
step four: the pilot hole drilling is carried out by adopting a directional drilling machine, and the drill bit positioning is carried out by adopting an MWD inclinometer to measure and obtain a well inclination angle P and a well inclination azimuth angle phi; the RMRS rotating magnetic field ranging system measures and obtains a magnetic declination delta;
step five: obtaining a Gaussian plane meridian convergence angle gamma, wherein gamma is calculated by the following formula, and gamma=sinB×ΔL;
wherein: b is the latitude of the measuring point, unit: a degree; Δl is the difference in longitude between the measurement point and the central meridian, in units of: a degree;
step six: calculating a corrected azimuth angle according to the monitoring data by using the following formula; phi = phi + delta-gamma; wherein:
phi' is the azimuth angle used for track calculation after azimuth correction, unit: a degree;
phi is the azimuth angle of the well measured by the MWD inclinometer, unit: a degree;
delta is the declination measured by the RMRS rotating magnetic field ranging system, east declination is positive, west declination is negative, and the unit is: a degree;
gamma is the convergence angle of the meridian of the Gaussian plane, east convergence angle is positive, west convergence angle is negative, unit: a degree;
step seven: calculating coordinates of measuring points X1 and Y1, and taking an ABS (phi') angle as a judgment;
when the calculated ABS (Φ ') to Φ) < 180, the measurement point x1=x+cos ((Φ ') +Φ)/2) ×sin ((P ' +p)/2) ×l; when ABS (Φ ') to Φ) > 180, the measurement point x1=x+cos ((Φ ') +Φ+360)/2) X sin ((P ') +p)/2) X L;
when the calculated ABS (Φ ') to Φ) < 180, the measurement point y1=y+sin ((Φ ') +Φ)/2) ×sin ((P ' +p)/2) ×l; when ABS (Φ ' - Φ) > 180, the measurement point y1=y+sin ((Φ ' - Φ+360)/2) x sin ((P ' -P)/2) x L; wherein:
x is the X-axis coordinate of the inclined wellhead guide hole, and the unit is: rice;
p' is the average well inclination angle of the measurement points, unit: a degree;
p is the well inclination angle, unit: a degree;
l is the distance between the measuring point and the wellhead, and is the unit of meter;
y is Y-axis coordinate of the inclined wellhead guide hole, and the unit is: rice;
phi' is the azimuth of the measurement point, unit: a degree;
phi is the azimuth angle of the guide hole point, unit: a degree;
step eight: calculating a measurement point elevation h1=h-cos (P') x L; wherein: h is the elevation of the inclined wellhead guide hole, and the unit is: rice; h1 is the elevation of the measuring point, and the unit is: rice;
step nine: comparing the coordinates of the measuring points X1 and Y1 with the design coordinates of the measuring points to determine the plane deflection length and direction of the guide hole; determining the deviation direction of the guide hole according to comparison between the guide hole well deviation measured by the MWD inclinometer and the designed well deviation so as to carry out deviation correcting operation on the guide hole subsequently;
step ten: and (3) adopting a directional drilling machine to match a directional combined drilling tool and a 0.5-degree bent screw rod to correct the guide hole, and adjusting to sliding drilling under the condition that the wireless inclinometer detects the deflection, and controlling the drilling track so as to reduce the hole deflection.
The inclined well with the gentle dip angle is an inclined well with the drilling angle of 25-35 degrees. The drilling is inclined shaft drilling with an inclination angle of 25-35 degrees.
The drill bit is positioned by adopting an MWD inclinometer and an RMRS rotating magnetic field ranging system to measure the well inclination angle and the magnetic azimuth angle; the measurement data of the MWD inclinometer are used for controlling a pulse generator to generate mud pressure through a modulator, a ground mud pressure sensor is used for sending obtained data to a ground computer, and the well inclination angle P and the well inclination azimuth angle phi are displayed after the data are processed by the computer; the RMRS rotating magnetic field ranging system measures and displays the magnetic declination delta by the measuring probe, the east magnetic declination is positive, and the west magnetic declination is negative.
The research of the invention is that: inclined shaft drilling is embodied as a spiral shape starting from the beginning of drilling and gradually shifting downwards and leftwards and rightwards over time, but as the length of the inclined shaft increases, the limit track can be approximately spiral.
In the control application of the track precision of the guide hole excavated by the slow inclined shaft inverted well drilling machine, the method of the invention uses the MWD inclinometer and the RMRS distance meter to acquire related parameters, utilizes the calculation and analysis of related parameter data to construct a three-dimensional model of the guide hole inclinometry, the magnetic declination and the guide well, realizes the deviation correction while drilling and the high-precision inclinometry in the construction of the slow inclined shaft guide hole, and ensures the guide hole excavation precision of the slow inclined shaft.
According to the invention, by utilizing the research of the MWD wireless inclinometry while drilling technology, the accurate positioning of the construction of the slow inclined shaft guide hole is realized, the RMRS magnetic distance meter is matched, the defects of the MWD inclinometer are effectively overcome, the error influence caused by the MWD inclinometer can be eliminated, and the method is suitable for the track control of the slow inclined shaft guide hole under various scene conditions.
The invention has the following advantages: the invention utilizes the combination of the MWD wireless inclinometry while drilling technology and the RMRS rotating magnetic field ranging technology to obtain the wireless inclinometry accurate positioning deviation correction while drilling, the deviation slope of the guide hole can be controlled to be between 0.1 and 0.5 percent, the traditional water and electricity industry still adopts a large amount of reverse well drilling machine touch-typing modes at present, meanwhile, the angle of the traditional reverse well drilling machine capable of excavating is generally 60-90 degrees, the inclined well under 45 degrees is excavated, but the inclined well guide hole under 25-35 degrees is excavated, no precedent exists at present, the track control method of the inclined well guide hole with the slow inclination angle can realize the accurate positioning of the reverse well drilling in the construction of the inclined well with the slow inclination angle of 25-35 degrees, the deviation correction while drilling is realized, the purpose of intelligent water and electricity construction inclined well construction is achieved, and the invention fills the blank in the aspects of high-precision inclinometry and deviation correction of the construction of the inclined well guide hole with the slow inclination angle can realize the high-precision inclined well drilling construction.
Drawings
FIG. 1 is a schematic illustration of a pilot hole drilling of the present invention; wherein A, B is a guide hole track measuring point, phi A and phi B are the grid azimuth angles of the measuring points A, B respectively, and thick lines in the figure represent guide hole tracks.
FIG. 2 is a schematic view of a vertical trajectory of a manhole guide in accordance with an embodiment of the present invention; wherein C is the longitudinal drilling point of the guide hole, D is the longitudinal track of the guide hole, E is the longitudinal track of the inclined shaft design, and F is the longitudinal drilling point of the guide hole.
FIG. 3 is a schematic view of a plan trajectory of a manhole guide in accordance with an embodiment of the present invention; wherein H is the plane drilling point of the guide hole, I is the plane track of the guide hole, J is the plane track of the inclined shaft design, and K is the plane drilling point of the guide hole.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, which are intended to be illustrative of the principles of the present invention and not in any way limiting, nor will the same or similar techniques be used in connection with the present invention beyond the scope of the present invention.
The slow inclined shaft guide hole track control method comprises the following steps:
step one: determining a preset track of the guide hole, and establishing a three-dimensional model of the guide hole and the inclined shaft;
step two: selecting a directional drilling machine, an inclinometer, a magnetic measuring instrument and a deviation correcting combined drilling tool for construction;
step three: the total station lofting guide hole enters a drilling point and a direction point, and the directional drilling machine is positioned for guide hole drilling;
step four: the pilot hole drilling is carried out by adopting a directional drilling machine, and the drill bit positioning adopts an MWD inclinometer and an RMRS rotating magnetic field ranging system to measure the well inclination angle and the magnetic azimuth angle.
The measurement data of the MWD inclinometer are used for controlling the pulse generator to generate mud pressure through the modulator, the ground mud pressure sensor is used for sending obtained data to a ground computer, and the computer is used for carrying out data processing and displaying a well inclination angle P and a well inclination azimuth angle phi; the RMRS rotating field ranging system measures and displays the declination delta, the east declination is positive, and the west declination is negative.
Step five: the gaussian plane meridian convergence angle γ is calculated from γ=sinb×Δl;
wherein: b is the latitude of the measuring point, and the unit degree; delta L is the longitude difference between the measuring point and the central meridian, and the unit degree;
step six: calculating a corrected azimuth angle according to the monitoring data by using the following formula; phi = phi + delta-gamma; wherein:
azimuth angle used for track calculation after azimuth correction is carried out on phi' and unit degree;
phi is the well inclination azimuth angle measured by the MWD inclinometer, and is unit degree;
delta is the magnetic declination measured by the RMRS rotating magnetic field ranging system, east magnetic declination is positive, and west magnetic declination is negative in unit degree;
gamma is the convergence angle of the meridian of the Gaussian plane, east convergence angle is positive, west convergence angle is negative, and unit degree;
step seven: calculating coordinates of measuring points X1 and Y1, and taking an ABS (phi') angle as a judgment;
when the calculated ABS (Φ ') to Φ) < 180, the measurement point x1=x+cos ((Φ ') +Φ)/2) ×sin ((P ' +p)/2) ×l; when ABS (Φ ') to Φ) > 180, the measurement point x1=x+cos ((Φ ') +Φ+360)/2) X sin ((P ') +p)/2) X L;
when the calculated ABS (Φ ') to Φ) < 180, the measurement point y1=y+sin ((Φ ') +Φ)/2) ×sin ((P ' +p)/2) ×l; when ABS (Φ ' - Φ) > 180, the measurement point y1=y+sin ((Φ ' - Φ+360)/2) x sin ((P ' -P)/2) x L;
wherein:
x is the X-axis coordinate of the inclined wellhead guide hole, and the unit meter;
p' is the average well inclination angle of the measuring points, and the unit degree;
p is the well inclination angle, unit degree;
l is the distance between the measuring point and the wellhead per meter;
y is the Y-axis coordinate of the inclined wellhead guide hole, and the unit meter;
phi' is the azimuth of the measuring point, and is a unit degree;
phi is the azimuth angle of the guide hole point, and is unit degree.
Step eight: calculating a measurement point elevation h1=h-cos (P') x L; wherein:
h is the elevation of the inclined wellhead guide hole, and is unit meter;
p' is the average well inclination angle of the measuring points, and the unit degree;
l is the distance (namely the well depth) between the measuring point and the wellhead, and the unit meter;
h1 is the height of the measuring point, and the unit meter;
step nine: comparing the coordinates of the measuring points X1 and Y1 with the design coordinates of the measuring points to determine the plane deflection length and direction of the guide hole; determining the vertical direction of the guide hole according to comparison between the guide hole well inclination measured by the MWD inclinometer and the designed well inclination;
step ten: and (3) adopting a directional drilling machine to match a directional combined drilling tool and a 0.5-degree bent screw rod to correct the guide hole, and adjusting to sliding drilling under the condition that the wireless inclinometer detects the deflection, and controlling the drilling track so as to reduce the hole deflection.
The invention uses the earth magnetic field positioning principle, the Gaussian plane rectangular coordinate system and the earth coordinate system to carry out guide hole track analysis, uses the MWD inclinometer and the RMRS rotating magnetic field ranging system to obtain related data, builds a three-dimensional model of guide hole inclinometry, magnetic declination and guide well, and provides basis for a guide hole track precision control method.
In the application of controlling the track precision of the directional drilling machine excavation guide hole, the method prepares a guide hole deviation correcting scheme by obtaining relevant parameters such as well depth, well deviation, magnetic deflection angle and the like, and adjusts the guide hole deviation correcting scheme to sliding drilling under the condition that the deviation is measured by a wireless inclinometer while drilling, thereby controlling the drilling track so as to reduce the hole deviation.
In the construction of the inclined shaft, the invention forms a real-time positioning and deviation correcting technology, and solves the problems of drilling deviation of the slow-dip angle guide hole caused by the dead weight of the drill rod and complex geology. By adopting the method, the deviation between the guide hole penetration of the inclined shaft with the length of 263m and 36 degrees and the designed point position is 25cm, and the construction penetration achieves the accuracy of 1 per mill.
The invention can ensure real-time track monitoring and deviation correction of the guide hole in the construction process of the inclined shaft guide hole with the gentle dip angle, ensure that the guide hole precision meets the standard requirement and avoid the risk of drill sticking caused by larger curvature of the guide hole.
Claims (3)
1. The slow inclined shaft guide hole track control method is characterized by comprising the following steps of:
step one: determining a preset track of the guide hole, and establishing a three-dimensional model of the guide hole and the inclined shaft;
step two: selecting a directional drilling machine, an inclinometer, a magnetic measuring instrument and a deviation correcting combined drilling tool for construction;
step three: the total station lofting guide hole enters a drilling point and a direction point, and the directional drilling machine is positioned for guide hole drilling;
step four: the pilot hole drilling is carried out by adopting a directional drilling machine, and the drill bit positioning is carried out by adopting an MWD inclinometer to measure and obtain a well inclination angle P and a well inclination azimuth angle phi; the RMRS rotating magnetic field ranging system measures and obtains a magnetic declination delta;
step five: obtaining a gaussian plane meridian convergence angle γ, γ obtained by calculation of the formula γ=sinb×Δl, wherein: b is the latitude of the measuring point, unit: a degree; Δl is the difference in longitude between the measurement point and the central meridian, in units of: a degree;
step six: calculating a corrected azimuth angle according to the monitoring data by using the following formula; phi (phi) ˊ =Φ+δ - γ; wherein: phi (phi) ˊ For azimuth angle used for track calculation after azimuth correction, unit: a degree; phi is the azimuth angle of the well measured by the MWD inclinometer, unit: a degree; delta is the magnetic declination measured by the RMRS rotating magnetic field ranging system, east magnetic declination is positive, west magnetic declination is negative, and single magnetic declination is measuredBits: a degree; gamma is the convergence angle of the meridian of the Gaussian plane, east convergence angle is positive, west convergence angle is negative, unit: a degree;
step seven: the coordinates of the measurement points X1 and Y1 are calculated by ABS (phi) ˊ -phi) angle as a determination;
when calculating ABS (phi) ˊ -phi) < 180, the measurement point x1=x+cos ((phi) ˊ +φ)/2)×sin((P ˊ +p)/2) x L; when ABS (phi) ˊ -phi) > 180, the measurement point x1=x+cos ((phi) ˊ +φ+360)/2)×sin((P ˊ +P)/2)×L；
When calculating ABS (phi) ˊ -phi) < 180, the measurement point y1=y+sin ((phi) ˊ +φ)/2)×sin((P ˊ +p)/2) x L; when ABS (phi) ˊ -phi) > 180, the measurement point y1=y+sin ((phi) ˊ +φ+360)/2)×sin((P ˊ +P)/2)×L；
Wherein: x is the X-axis coordinate of the inclined wellhead guide hole, and the unit is: rice; p (P) ˊ The average well inclination angle of the measuring points is as follows: a degree; p is the well inclination angle, unit: a degree; l is the distance between the measuring point and the wellhead, and is the unit of meter; y is Y-axis coordinate of the inclined wellhead guide hole, and the unit is: rice; phi (phi) ˊ The azimuth angle of the measuring point is as follows: a degree; phi is the azimuth angle of the guide hole point, unit: a degree;
step eight: calculating the measurement point elevation h1=h-cos (P ˊ ) X L; wherein: h is the elevation of the inclined wellhead guide hole, and the unit is: rice; h1 is the elevation of the measuring point, and the unit is: rice;
step nine: comparing the coordinates of the measuring points X1 and Y1 with the design coordinates of the measuring points to determine the plane deflection length and direction of the guide hole; determining the deviation direction of the guide hole according to comparison between the guide hole well deviation measured by the MWD inclinometer and the designed well deviation so as to carry out deviation correcting operation on the guide hole subsequently;
step ten: and (3) adopting a directional drilling machine to match a directional combined drilling tool and a 0.5-degree bent screw rod to correct the guide hole, and adjusting to sliding drilling under the condition that the wireless inclinometer detects the deflection, and controlling the drilling track so as to reduce the hole deflection.
2. The method for controlling the trajectory of a pilot hole of a slow inclined shaft according to claim 1, wherein the method comprises the following steps: the slow inclined well is an inclined well with an inclined angle of 25-35 degrees.
3. The method for controlling the trajectory of a pilot hole of a slow inclined shaft according to claim 2, wherein the method comprises the following steps: the MWD inclinometer controls a pulse generator to generate mud pressure through a modulator, obtains data through a ground mud pressure sensor, and processes and displays a well inclination angle P and a well inclination azimuth angle phi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110809986.7A CN113338804B (en) | 2021-07-17 | 2021-07-17 | Control method for guide hole track of inclined shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110809986.7A CN113338804B (en) | 2021-07-17 | 2021-07-17 | Control method for guide hole track of inclined shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113338804A CN113338804A (en) | 2021-09-03 |
| CN113338804B true CN113338804B (en) | 2023-05-05 |
Family
ID=77479948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110809986.7A Active CN113338804B (en) | 2021-07-17 | 2021-07-17 | Control method for guide hole track of inclined shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113338804B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804051A (en) * | 1987-09-25 | 1989-02-14 | Nl Industries, Inc. | Method of predicting and controlling the drilling trajectory in directional wells |
| CN104533304A (en) * | 2014-12-29 | 2015-04-22 | 中国水利水电第七工程局有限公司 | Gentle slope inclined shaft excavation construction method and device |
| WO2018090348A1 (en) * | 2016-11-19 | 2018-05-24 | 吴平 | Automatic collision avoidance method for adjacent wells |
| DE102018205134A1 (en) * | 2018-04-05 | 2018-06-21 | Emqopter GmbH | Distance sensor system for the efficient and automatic detection of landing sites for autonomous hoverable aircraft |
| CN110513043A (en) * | 2019-07-15 | 2019-11-29 | 中国地质大学（武汉） | A kind of vertical drilling process straightening control method based on automatic guide drilling tool |
| CN112012751A (en) * | 2020-08-24 | 2020-12-01 | 中国水利水电第七工程局有限公司 | Precise excavation method for gentle slope inclined shaft |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2012203948B2 (en) * | 2008-10-14 | 2014-04-24 | Precision Alignment Holdings Pty Ltd | Laser Alignment Device for use with a Drill Rig |
| WO2012173601A1 (en) * | 2011-06-14 | 2012-12-20 | Halliburton Energy Services, Inc. | System, method, and computer program for predicting borehole geometry |
-
2021
- 2021-07-17 CN CN202110809986.7A patent/CN113338804B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4804051A (en) * | 1987-09-25 | 1989-02-14 | Nl Industries, Inc. | Method of predicting and controlling the drilling trajectory in directional wells |
| CN104533304A (en) * | 2014-12-29 | 2015-04-22 | 中国水利水电第七工程局有限公司 | Gentle slope inclined shaft excavation construction method and device |
| WO2018090348A1 (en) * | 2016-11-19 | 2018-05-24 | 吴平 | Automatic collision avoidance method for adjacent wells |
| DE102018205134A1 (en) * | 2018-04-05 | 2018-06-21 | Emqopter GmbH | Distance sensor system for the efficient and automatic detection of landing sites for autonomous hoverable aircraft |
| CN110513043A (en) * | 2019-07-15 | 2019-11-29 | 中国地质大学（武汉） | A kind of vertical drilling process straightening control method based on automatic guide drilling tool |
| CN112012751A (en) * | 2020-08-24 | 2020-12-01 | 中国水利水电第七工程局有限公司 | Precise excavation method for gentle slope inclined shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113338804A (en) | 2021-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018201714A1 (en) | Accurate extraction method for coal mine gas | |
| CN106437512B (en) | A kind of shale gas horizontal well landing path drilling tracking regulation and control method | |
| CN108316363B (en) | Automatic monitoring system and method for horizontal displacement of foundation pit | |
| US9243455B2 (en) | Methods for directing vertical drilling | |
| CN112253083A (en) | Automatic positioning device and method for drilling | |
| CN109915018B (en) | Method for determining tool face angle in three-dimensional borehole trajectory control | |
| CN108035678B (en) | Shaft excavation guide control device and adjustment method | |
| CN101319610B (en) | Down-hole drilling direction ruler and fast orienting method for hole drilling | |
| CN107387167A (en) | Shallow tunnel advance core extrudes system for monitoring displacement and method | |
| CN110362899A (en) | The cutter head torque calculation method of basement rock protrusion section is crossed for super-large-diameter shield | |
| CN105631753A (en) | Attitude of stratum-based horizontal well oil reservoir profile modeling method | |
| CN104153391A (en) | Open caisson geometrical shape monitoring method based on differential GPS | |
| CN207177972U (en) | Shallow tunnel advance core extrudes system for monitoring displacement | |
| CN109653229A (en) | The more negative well bore pressure cylinder anemometer tower composite foundations of jacket automate negative pressure method for sinking | |
| CN105444711A (en) | Anti-torsion universal deep-hole inclinometry method, anti-torsion universal deep-hole inclinometer and anti-torsion universal deep-hole inclinometry system | |
| CN106703823A (en) | Posture error correction system and method of large driving equipment | |
| CN109596112B (en) | Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel | |
| CN113338804B (en) | Control method for guide hole track of inclined shaft | |
| CN107060642A (en) | Horizontal well track control method being connected trona deep-thin layer more | |
| CN109630016A (en) | A kind of mining horizontal km directional drilling machine trace tracking method | |
| CN112049648B (en) | Pipe jacking construction monitoring control method | |
| CN106320978A (en) | Drawing method of coal seam contour line based on underground location hole | |
| CN219034719U (en) | Deviation correcting device for pipe curtain jacking construction | |
| CN111594143A (en) | Construction method for rapidly determining drilling azimuth angle | |
| CN202216642U (en) | Tunnel technical specification (TSP) geometric parameter all-around measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |