CN114961560B - Rescue well reentry track control method and equipment - Google Patents
Rescue well reentry track control method and equipment Download PDFInfo
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- CN114961560B CN114961560B CN202210600439.2A CN202210600439A CN114961560B CN 114961560 B CN114961560 B CN 114961560B CN 202210600439 A CN202210600439 A CN 202210600439A CN 114961560 B CN114961560 B CN 114961560B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
- G06F17/12—Simultaneous equations, e.g. systems of linear equations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
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- 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
Abstract
The application provides a control method and equipment for reentry tracks of a relief well, and relates to the technical field of drilling of relief wells. The method comprises the following steps: acquiring the relative position relation of the relief well and the accident well below a wellbore coincident point, wherein the wellbore coincident point is a sleeve collision wellbore coincident point where the relief well and the accident well are contacted; obtaining the geometric position relation of the rescue well and the accident well according to the first well inclination and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation; obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well deviation and the second azimuth angle of the accident well in a preset reentry depth; and adjusting the reentry track of the relief well according to the two-dimensional change relation and the relative position relation. The method solves the problem that the existing magnetic distance measuring method is difficult to accurately position, reduces the difficulty of track control in the reentry process, realizes continuous calibration of the rescue well track, and improves the control precision and reentry efficiency of the rescue well drilling.
Description
Technical Field
The application relates to a rescue well drilling technology, in particular to a rescue well reentry track control method and equipment.
Background
The drilling rescue well is a special measure in oil-gas engineering, is suitable for blowout accident well control, can be used for plugging old wells of gas storage, is also suitable for environmental protection treatment of difficult wells, has multiple functions, and is an important guarantee for oil-gas resource safety, high efficiency and green development.
Different from conventional directional drilling, the target area of the relief well is difficult to be determined in advance, underground detection means such as magnetic ranging are needed, the relief well is required to be subjected to track control to approach an accident well according to the measurement result, and the track control requirement near the communication point is particularly strict. In the prior art, the relative position relation between the rescue well and the accident well is calculated by mainly receiving the accident well related magnetic field signals in the rescue well through a magnetic ranging detection method, and processing and controlling the signals through a mature algorithm.
However, the magnetic ranging result is related to stratum properties, the distance measurement error is large, and the underground space is difficult to perspective, so that the measurement result lacks a reliable checking means on site, meanwhile, because the naked eye section has no magnetic beacon and cannot range in real time, a large cutting angle brings new risks to reentry, so that the rescue well track control error is large, and reentry of the rescue well is difficult to realize.
Disclosure of Invention
The application provides a rescue well reentry track control method and device, which are used for solving the problems that the magnetic ranging has large error in the control of the rescue well track and the reentry of the rescue well is difficult to realize.
In a first aspect, the present application provides a method for controlling a reentry track of a relief well, including:
acquiring the relative position relation of a relief well and an accident well below a wellbore coincident point, wherein the wellbore coincident point is a sleeve collision wellbore coincident point where the relief well and the accident well are contacted;
obtaining the geometric position relation of the rescue well and the accident well according to the first well deviation and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation;
obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well inclination and the second azimuth angle of the accident well in a preset reentry depth;
and adjusting the reentry track of the relief well according to the two-dimensional change relation and the relative position relation.
In one possible design, the acquiring the relative positional relationship between the rescue well and the accident well includes:
setting a plurality of measuring points according to a first preset straight line length on a rescue well track, and respectively obtaining the relative distance and the relative azimuth of each measuring point to a magnetic ranging point in the accident well, wherein the positions of the magnetic ranging points are kept unchanged when two adjacent measuring points are measured;
The obtaining the geometric position relationship between the relief well and the accident well according to the first well deviation and the first azimuth angle of the relief well comprises the following steps:
acquiring a first included angle and a second included angle between two adjacent measuring points and a horizontal plane according to the first azimuth angle and the relative azimuth;
acquiring projection lengths of two adjacent measuring points on a horizontal plane according to the first well deviation and the first preset straight line length;
and obtaining the geometric distance between the rescue well and the accident well at two adjacent measuring points according to the first included angle, the second included angle and the projection length.
In one possible design, the calibrating the geometric positional relationship into the relative positional relationship includes:
obtaining a plurality of groups of magnetic ranging deviations according to the relative distance and the geometric distance of each measuring point;
and processing a plurality of groups of magnetic distance measurement deviations by a Kalman filtering or neural network method to obtain the distance and the azimuth of each measuring point and the magnetic distance measurement point in the maximum confidence interval.
In one possible design, the obtaining the two-dimensional variation relationship of the relief well relative to the accident well according to the second well inclination and the second azimuth of the accident well includes:
Obtaining the well deviation change of the rescue well relative to the accident well according to the first well deviation and the second well deviation;
obtaining the azimuth angle change of the rescue well relative to the accident well according to the first azimuth angle and the second azimuth angle;
dividing the distance between the rescue well and the accident well into a plurality of change points according to a second preset straight line length, and obtaining the relative change quantity of two adjacent change points in the two-dimensional direction according to the well deviation change, the azimuth angle change, the second well deviation and the second preset straight line length.
In one possible design, the adjusting the re-entry trajectory of the relief well according to the two-dimensional change relation and the relative position relation includes:
acquiring a Cartesian coordinate relation of the rescue well relative to the accident well according to the relative position relation;
combining all first variation amounts of the first direction in the two-dimensional direction to obtain a first total movement amount of the relief well track in the first direction;
bringing the first total movement amount of the rescue well track into the Cartesian coordinate relationship to obtain a second total movement amount in a second direction in the two-dimensional direction;
and adjusting the reentry track of the relief well according to the second total movement amount.
In one possible design, before the relative positional relationship between the relief well and the accident well is obtained below the wellbore coincidence point, the method further includes:
acquiring the space coordinates of the relief well and the space coordinates of the wellbore overlapping point between the relief well head and the wellbore overlapping point;
according to the pre-measured historical inclinometry data of the accident well, the space coordinates of the accident well below the coincident point of the well hole are obtained, and the well inclination and the azimuth angle of the rescue well drilling are adjusted according to the space coordinates of the accident well.
In one possible design, the acquiring the spatial coordinates of the accident well below the wellbore coincidence point based on the pre-measured historical inclinometry data of the accident well includes:
setting a plurality of continuous interval points in the accident well, and acquiring a recursive formula of any two adjacent interval points in the accident well according to the space coordinates of the coincident points of the well bores and the historical inclinometry data of the accident well:
wherein, l' is the accident well depth in the historical inclinometry data; alpha' is the accident well inclination in the historical inclinometry data;an accident well azimuth in the historical inclinometry data; (x) N ，y N ，z N ) Spatial coordinates of the coincident point for the wellbore; (X) i ，Y i ，Z i ) The space coordinates of the accident well are obtained; i is any point in the accident well, i>1。
In a second aspect, the present application provides a relief well reentry track control apparatus, comprising:
the acquisition module is used for acquiring the relative position relation of the relief well and the accident well below a wellbore coincident point, wherein the wellbore coincident point is a sleeve collision wellbore coincident point where the relief well and the accident well are contacted;
the first processing module is used for obtaining the geometric position relation between the rescue well and the accident well according to the first well deviation and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation;
the second processing module is used for obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well inclination and the second azimuth of the accident well in a preset reentry depth;
and the adjusting module is used for adjusting the reentry track of the relief well according to the two-dimensional change relation and the relative position relation.
In a third aspect, the present application provides an electronic device comprising: a processor, and a memory communicatively coupled to the processor;
the memory stores computer-executable instructions;
and the processor executes the computer execution instructions stored in the memory to realize the control method of the reentry track of the relief well.
In a fourth aspect, the present application provides a computer readable storage medium having stored therein computer executable instructions for implementing a relief well re-entry trajectory control method when executed by a processor.
According to the rescue well reentry track control method and the rescue well reentry track control equipment, the relative position relation between the rescue well and the accident well is obtained through the position below the wellbore coincidence point, wherein the wellbore coincidence point is the sleeve collision wellbore coincidence point where the rescue well is contacted with the accident well; obtaining the geometric position relation of the rescue well and the accident well according to the first well inclination and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation; obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well deviation and the second azimuth angle of the accident well in a preset reentry depth; the method solves the problem that the existing magnetic ranging method is difficult to accurately position, reduces the difficulty of track control in the reentry process, realizes continuous calibration of the rescue well track, and improves the control precision and reentry efficiency of the rescue well drilling.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an application scenario of a relief well reentry track control method provided by the application;
FIG. 2 is a flowchart of a method for controlling reentry trajectory of a relief well according to the present application;
FIG. 3 is a second flowchart of a relief well reentry track control method provided by the application;
FIG. 4 is a schematic diagram of a triangular navigation calibration calculation model provided by the present application;
FIG. 5 is a flowchart III of a relief well reentry track control method provided by the application;
FIG. 6 is a schematic diagram of a three-dimensional variable two-dimensional calculation model of the relative track of a rescue well and an accident well;
FIG. 7 is a flowchart of a relief well reentry track control method provided by the application;
FIG. 8 is a schematic structural diagram of a relief well reentry track control device provided by the application;
fig. 9 is a schematic structural diagram of an electronic device provided by the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the application, as detailed in the accompanying claims, rather than all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The specific application scene of the application is as follows:
fig. 1 is a schematic diagram of an application scenario of a relief well reentry track control method provided by the application. As shown in fig. 1, in the relief well reentry track control method provided by the application, before a relief well 101 is in wellhead to two wells and collides with a casing, the conventional orientation method is used for drilling the relief well 101 into a detectable range of magnetic ranging, a magnetic distance meter for measuring the relative position relation between the relief well 101 and the accident well 102 in real time and an inclinometer for measuring the travelling direction of the bit of the relief well 101 are arranged at a drill bit, as the accident well is gradually far away from the ground, the measuring error of the relief well is gradually increased, for the accident well 102, the range of error ellipse 103 is gradually increased from top to bottom, after the relief well 101 and the accident well 102 collide with the casing, a wellbore reentry point 104 is formed, the error ellipse 103 of the accident well 102 can be calibrated through the wellbore reentry point 104, then the accident well 102 is calibrated onto the relief well 101, so that the relief well 101 gradually approaches to the position of the accident well 102, and under the wellbore reentry point 104, the geometric position relation is obtained through the triangular navigation method, when the drill bit approaches to the vicinity of the preset well depth, the longitudinal direction of the accident well can be considered to be satisfied, the two-dimensional direction is adjusted only according to the fact that the longitudinal direction of the accident is required to be adjusted, the two-dimensional change is satisfied, and the two-dimensional reentry condition is realized.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 2 is a flowchart of a method for controlling reentry trajectory of a relief well according to the present application. As shown in fig. 2, a relief well reentry track control method includes:
s201, acquiring a relative position relation between a relief well and an accident well below a wellbore coincidence point, wherein the wellbore coincidence point is a sleeve collision wellbore coincidence point where the relief well and the accident well are contacted;
specifically, the wellbore coincidence point is the place where the first intersection distance of the relief well and the accident well is closest, the relief well drill bit can be determined to reach the vicinity of the accident well according to the wellbore coincidence point, and then the relief well track needs to be finely controlled to re-drill into the accident well, so that the relative position relationship between the two wells below the wellbore coincidence point needs to be acquired, wherein the relative position relationship is mainly the relative distance and the relative azimuth angle between the two wells, and the measurement is performed through the magnetic range finder.
S202, according to a first well deviation and a first azimuth angle of the relief well, obtaining a geometric position relation between the relief well and the accident well, and calibrating the geometric position relation into the relative position relation;
specifically, because the relief well is dynamically changed in track, the depth, the gradient and the direction of the drill bit can be obtained by arranging the inclinometer at the drill bit, and then the depth, the well deviation and the azimuth of the relief well can be correspondingly obtained.
S203, obtaining a two-dimensional change relation of the rescue well relative to the accident well according to a second well inclination and a second azimuth angle of the accident well in a preset reentry depth;
specifically, before the rescue well is drilled, the depth of the rescue well, namely the preset reentry well depth, of the rescue well is firstly set according to the accident well, the preset reentry well depth is a depth range, the reentry point is only one point in the preset reentry well depth range, namely the longitudinal direction is restrained, the influence of the change of the track of the reentry well can be avoided, and the three-dimensional space relation can be simplified into a two-dimensional space relation. The difference between the well inclination and the azimuth angle between the two wells can be obtained according to the first well inclination and the first azimuth angle of the relief well and the second well inclination and the second azimuth angle of the accident well, so that the variation in the two right-angle directions corresponding to the drilling distance can be obtained according to the drilling distance within a small enough range.
S204, adjusting the reentry track of the relief well according to the two-dimensional change relation and the relative position relation.
Specifically, since the adjustment of the position in any one of the two directions of the two-dimensional relationship affects the other direction, a Cartesian coordinate relationship between the two directions is established, the changes in the two directions are projected onto the Cartesian coordinate system, the obtained multiple groups of two-dimensional change relationships are combined to respectively obtain total movement amounts on the two Cartesian coordinate systems, and then the total movement amounts are converted to zero points of the Cartesian coordinate system only by referring to the Cartesian coordinate system, so that the coincidence of the rescue well and the accident well can be realized, and the reentry track process of the rescue well is completed.
According to the method provided by the embodiment, the relative position relation between the relief well and the accident well is obtained below the wellbore coincident point, wherein the wellbore coincident point is a sleeve collision wellbore coincident point where the relief well and the accident well are contacted; obtaining the geometric position relation of the rescue well and the accident well according to the first well inclination and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation; obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well deviation and the second azimuth angle of the accident well in a preset reentry depth; the method solves the problem that the existing magnetic ranging method is difficult to accurately position, reduces the difficulty of track control in the reentry process, realizes continuous calibration of the rescue well track, and improves the control precision and reentry efficiency of the rescue well drilling.
The relief well re-entry trajectory control method of the present application is described in detail below with reference to a specific embodiment.
Fig. 3 is a flowchart II of a relief well reentry track control method provided by the application. As shown in fig. 3, on the basis of the above embodiment, the present embodiment describes in detail an implementation manner in which a geometric positional relationship between the relief well and the accident well is obtained according to a first well deviation and a first azimuth angle of the relief well, and the geometric positional relationship is calibrated into the relative positional relationship.
S301, setting a plurality of measuring points on a rescue well track according to a first preset straight line length, and respectively obtaining the relative distance and the relative azimuth of each measuring point to a magnetic ranging point in the accident well, wherein the positions of the magnetic ranging points are unchanged when two adjacent measuring points are measured;
specifically, a first measuring point A is obtained by using a magnetic distance meter 1 First distance d at 1 And a first direction theta 1 Second measuring point A 2 Second distance d at 2 And a second orientationθ 2 And so on, the distance between two adjacent measuring points is smaller, for example, less than 5m, and the connecting line between the two measuring points is a straight line segment, which can be represented by the following triangular navigation calibration calculation model:
fig. 4 is a schematic diagram of a trigonometric navigation calibration calculation model provided by the application. As shown in fig. 4, the geometric positional relationship is obtained using a trigonometric navigation calibration calculation model. When the relief well is inclined by alpha from one measuring point 1 And azimuth angleForward drilling l 1 When reaching another measuring point, the relief well track is projected to the coincident point A of the well bore 0 Is the starting point, azimuth angle is +.>The projection of each measuring point on the ray is A 1 、A 2 ……A n 。
S302, acquiring a first included angle and a second included angle between two adjacent measuring points and a horizontal plane according to the first azimuth angle and the relative azimuth;
Specifically, according to a first azimuth angleAnd a first direction theta 1 Acquiring a first included angle->According to the first azimuth angle->And a second azimuth theta 2 Acquiring a second included angle->
S303, acquiring projection lengths of two adjacent measuring points on a horizontal plane according to the first well deviation and the first preset straight line length;
specifically according toFirst well deviation alpha 1 And a first preset straight line length l 1 Obtaining the projection length K of two adjacent measuring points on the horizontal plane 1 ：
K 1 ＝l 1 sinα 1 。
S304, obtaining the geometric distance between the rescue well and the accident well at two adjacent measuring points according to the first included angle, the second included angle and the projection length;
specifically, according to a first angleSecond included angle->And projection length K 1 Acquiring a first measuring point A by utilizing the ratio relation of triangular navigation 1 First geometric distance d 'to accident well' 1 And a second measuring point A 2 A second geometric distance d 'to the accident well' 2 ：
S305, obtaining a plurality of groups of magnetic ranging deviations according to the relative distance and the geometric distance of each measuring point;
specifically, the first geometric distance d 'to be acquired' 1 From a first distance d acquired by a magnetic distance meter 1 Subtracting to obtain a first magnetic ranging deviation delta 1 The second geometrical distance d 'to be acquired' 2 From a second distance d acquired by a magnetic distance meter 2 Subtracting to obtain a second magnetic ranging deviation delta 2 ：
And by analogy, acquiring magnetic ranging deviations of all the measuring points.
S306, processing a plurality of groups of magnetic ranging deviations through a Kalman filtering or neural network method to obtain the distance and the azimuth of each measuring point and the magnetic ranging point in the maximum confidence interval.
Specifically, error optimization processing is performed on a plurality of groups of magnetic ranging deviations, the processing mode includes, but is not limited to, a Kalman filtering or neural network method, the specific processing method is the prior art, no further detailed description is made here, probability that the magnetic ranging output result is larger than normal and smaller than normal can be obtained after processing, the magnetic ranging result of the maximum quality information zone can be given according to the processing result, and therefore the determination of which magnetic ranging distance and azimuth data are available and which are unavailable is assisted, and the accuracy of track control is improved.
According to the embodiment of the invention, the magnetic ranging calibration is carried out on the short-distance accompanying section after the rescue well reaches the well re-entry point, the geometric position relation is obtained through the triangular navigation proportion relation, the relative position relation obtained through the magnetic ranging instrument is calibrated through the geometric position relation, double insurance is carried out, the reliability of the data obtained by the magnetic ranging instrument is improved, and the accuracy of the magnetic ranging result on the control of the rescue well track is improved.
Fig. 5 is a flowchart III of a relief well reentry track control method provided by the application. As shown in fig. 5, based on the above embodiment, the present embodiment describes in detail an implementation manner of adjusting the re-entry trajectory of the relief well according to the two-dimensional change relationship and the relative positional relationship.
S501, dividing the distance between the rescue well and the accident well into a plurality of change points according to a second preset straight line length in a preset reentry depth, and obtaining the well deviation change of the rescue well relative to the accident well according to the first well deviation and the second well deviation;
specifically, the preset reentry well depth is the preset reentry designated depth of the relief well, the designated depth is a determined range, and the accident well can be reversely solved at any measuring point A according to the borehole trajectory inversion method disclosed in the patent CN113756787A n At well inclination alpha' n And azimuth angleAs it is existingThe technology, the application is not described in detail here, but the relief well is described in A n Well deviation alpha at measuring point n And azimuth->Can be obtained by inclinometer, thus, from A n Measuring point to A n+1 The drilling distance of the measuring point is l n Then according to A n First well inclination alpha of relief well at measuring point n And a second well deviation alpha 'of the accident well' n Obtaining the well deviation change (alpha 'of the rescue well relative to the accident well' n -α n )。
S502, obtaining the azimuth angle change of the rescue well relative to the accident well according to the first azimuth angle and the second azimuth angle;
specifically, according to A n First azimuth of relief well at measuring pointAnd second azimuth of accident well->Obtaining the azimuth angle change of the rescue well relative to the accident well>
S503, obtaining the relative variable quantity of two adjacent change points in the two-dimensional direction according to the well deviation change, the azimuth angle change, the second well deviation and the second preset straight line length;
FIG. 6 is a schematic diagram of a three-dimensional variable two-dimensional calculation model of the relative track of a rescue well and an accident well. As shown in fig. 6, according to the well deviation change (α' n -α n ) Azimuth angle variationSecond preset straight length l n And a second well deviation alpha 'of the accident well' n Obtaining the product from A n Measuring point to A n+1 Change relation of measuring points:
s504, acquiring a Cartesian coordinate relation of the rescue well relative to the accident well according to the relative position relation;
specifically, the accident well needs to be reentered at a specified well depth, the ordinate of the accident well is constrained in the three-dimensional space, and the rescue well track is controlled by two degrees of freedom in the horizontal direction. If two degrees of freedom in the horizontal direction are adjusted at the same time, the control effect of the rescue well track cannot be predicted due to the difference of stratum and the interference of the magnetic instrument, so that the relation structure of the three-dimensional space becomes complex, and the variables are difficult to control. Therefore, near the heavy entry well depth, it is necessary to change the relief well from three dimensions to two dimensions with respect to the accident well trajectory. Magnetic ranging measurement at A n The relative position relation of the measuring point relief well and the accident well is the distance d n Azimuth θ n Converting the relation into Cartesian coordinate relation:
s505, combining all first variation amounts of the first direction in the two-dimensional direction to obtain a first total movement amount of the rescue well track in the first direction;
specifically, the first direction x is adjusted by superposition until A is reached m Dot, makeAt A m D at point n,x Zero, only d is present n,y The deviation of the direction, so that the second direction y only needs to be finely adjusted to realize the coincident entry accident well.
S506, bringing the first total movement amount of the relief well track into the Cartesian coordinate relationship to obtain a second total movement amount in a second direction in a two-dimensional direction;
s507, adjusting the reentry track of the relief well according to the second total movement amount.
Specifically, since the two directions are related to each other in the Cartesian coordinate relationship, the first direction is affected by the fine adjustment of the second direction, and thus the adjustment of the two directions is repeated until d is set n,x And d n,y The direction is zero, and the corresponding variable quantity is the movement quantity of the rescue well to be controlled.
According to the embodiment of the invention, the longitudinal space which falls into the specified well depth range in the three-dimensional space is ignored near the specified accident well depth reentry point, and the moving distance in the other two directions is only adjusted, so that the relative position relation between the two is established through the Cartesian coordinate system because the relative position relation between the two is known, the adjustment variable is further reduced, the precise control of the rescue well track is realized, the higher adjustment time length caused by no adjustment among multiple variables is avoided, and the rescue well reentry adjustment efficiency is improved.
Fig. 7 is a flowchart of a relief well reentry track control method provided by the application. As shown in fig. 7, in the above embodiment, the present embodiment describes in detail the operation mode before the relative positional relationship between the relief well and the accident well is acquired.
S701, acquiring the space coordinates of the relief well and the space coordinates of the wellbore overlapping point between the relief well head and the wellbore overlapping point;
specifically, for a sufficiently small interval, the spatial coordinate (x i ，y i ，z i ) Can be obtained by spatial coordinates (x i-1 ，y i-1 ，z i-1 ) Recursively integrating, and the formula is:
wherein l is the depth of the relief well obtained by the inclinometer, and alpha are the valuesFor rescue obtained by inclinometerWell inclination and azimuth. Because the space coordinates of the relief well head are determined, the space coordinates (x) of the relief well at the wellbore junction can be obtained by recursion N ，y N ，z N )。
S702, setting a plurality of continuous interval points in the accident well, and acquiring a recurrence formula of any two adjacent interval points in the accident well according to the space coordinates of the coincident points of the well holes and the historical inclinometry data of the accident well;
specifically, below the borehole coincidence, the relief well also satisfies the recursive integral of the spatial coordinates for a sufficiently small interval, and therefore, the historical inclinometry data of the known accident well is taken into the recursive formula, and finally, the spatial coordinates (x N ，y N ，z N ) The spatial coordinates of the accident well can be calibrated to the relief well.
S703, acquiring the space coordinates of the accident well below the coincident point of the well hole according to a recurrence formula of any two adjacent interval points in the accident well;
specifically, the accident well space coordinates are:
where l 'is historical data of the depth of the accident well obtained by the inclinometer, and alpha' andis the historical data of the well inclination and azimuth angle of the accident well obtained by the inclinometer.
And S704, adjusting the well inclination and the azimuth angle of the rescue well drilling according to the space coordinates of the accident well.
According to the embodiment of the invention, the space coordinates of the coincident points of the well bores are firstly deduced through a recurrence formula, then the space coordinates of all the accident wells below the coincident points of the well bores and the historical inclinometry data of the accident wells are recurrence by using the recurrence formula, and the rescue wells are associated with the accident wells, so that the drilling inclination and azimuth angle of the rescue wells are adjusted according to the recurrence-obtained space coordinates of the accident wells, thereby eliminating the accumulated error of the data above the coincident points of the well bores, enhancing the referential of the historical inclinometry data of the accident wells obtained by an inclinometer, avoiding numerous error influences brought in the process of adjusting the relative position relationship by only adopting magnetic ranging, and improving the reentry efficiency.
The embodiment of the application can divide the functional modules of the electronic device or the main control device according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing unit. The integrated units may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
Fig. 8 is a schematic structural diagram of a relief well reentry track control device provided by the application. As shown in fig. 8, the apparatus 80 includes:
an obtaining module 801, configured to obtain a relative positional relationship between a relief well and an accident well below a wellbore coincidence point, where the wellbore coincidence point is a casing-collision wellbore coincidence point where the relief well contacts the accident well;
specifically, the obtaining module 801 is specifically configured to: acquiring the space coordinates of the relief well and the space coordinates of the wellbore overlapping point between the relief well head and the wellbore overlapping point; according to the pre-measured historical inclinometry data of the accident well, the space coordinates of the accident well below the coincident point of the well hole are obtained, and the well inclination and the azimuth angle of the rescue well drilling are adjusted according to the space coordinates of the accident well.
Further, a plurality of continuous interval points are arranged in the accident well, a recurrence formula of any two adjacent interval points in the accident well is obtained according to the space coordinates of the coincident points of the well holes and the historical inclinometry data of the accident well, and the space coordinates of the accident well below the coincident points of the well holes are obtained according to the recurrence formula.
A first processing module 802, configured to obtain a geometric position relationship between the relief well and the accident well according to a first well deviation and a first azimuth of the relief well, and calibrate the geometric position relationship into the relative position relationship;
specifically, the first processing module 802 is specifically configured to: setting a plurality of measuring points according to a first preset straight line length on a rescue well track, and respectively obtaining the relative distance and the relative azimuth of each measuring point to a magnetic ranging point in the accident well, wherein the positions of the magnetic ranging points are kept unchanged when two adjacent measuring points are measured; acquiring a first included angle and a second included angle between two adjacent measuring points and a horizontal plane according to the first azimuth angle and the relative azimuth; acquiring projection lengths of two adjacent measuring points on a horizontal plane according to the first well deviation and the first preset straight line length; and obtaining the geometric distance between the rescue well and the accident well at two adjacent measuring points according to the first included angle, the second included angle and the projection length.
Further, according to the relative distance and the geometric distance of each measuring point, a plurality of groups of magnetic distance measurement deviations are obtained; and processing a plurality of groups of magnetic distance measurement deviations by a Kalman filtering or neural network method to obtain the distance and the azimuth of each measuring point and the magnetic distance measurement point in the maximum confidence interval.
A second processing module 803, configured to obtain, in a preset reentry depth, a two-dimensional change relationship of the relief well with respect to the accident well according to a second well deviation and a second azimuth of the accident well;
specifically, the second processing module 803 is specifically configured to: obtaining the well deviation change of the rescue well relative to the accident well according to the first well deviation and the second well deviation; obtaining the azimuth angle change of the rescue well relative to the accident well according to the first azimuth angle and the second azimuth angle; dividing the distance between the rescue well and the accident well into a plurality of change points according to a second preset straight line length, and obtaining the relative change quantity of two adjacent change points in the two-dimensional direction according to the well deviation change, the azimuth angle change, the second well deviation and the second preset straight line length.
Further, according to the relative position relation, a Cartesian coordinate relation of the rescue well relative to the accident well is obtained; combining all first variation amounts of the first direction in the two-dimensional direction to obtain a first total movement amount of the relief well track in the first direction; bringing the first total movement amount of the rescue well track into the Cartesian coordinate relationship to obtain a second total movement amount in a second direction in the two-dimensional direction; and adjusting the reentry track of the relief well according to the second total movement amount.
The adjusting module 804 is configured to adjust the re-entry trajectory of the relief well according to the two-dimensional change relationship and the relative position relationship.
The relief well reentry track control device provided in this embodiment may execute the relief well reentry track control method in the above embodiment, and its implementation principle and technical effect are similar, and this embodiment will not be repeated here.
In the specific implementation of the aforementioned relief well re-entry trajectory control device, each module may be implemented as a processor, and the processor may execute computer-executable instructions stored in the memory, so that the processor executes the aforementioned relief well re-entry trajectory control method.
Fig. 9 is a schematic structural diagram of an electronic device provided by the present application. As shown in fig. 9, the electronic device 90 includes: at least one processor 901 and a memory 902. The electronic device 90 further comprises a communication component 903. The processor 901, the memory 902, and the communication unit 903 are connected via a bus 904.
In a specific implementation process, at least one processor 901 executes computer-executable instructions stored in the memory 902, so that the at least one processor 901 executes the rescue well re-entry trajectory control method executed on the electronic device side.
The specific implementation process of the processor 901 may refer to the above-mentioned method embodiment, and its implementation principle and technical effects are similar, and this embodiment will not be described herein again.
In the above embodiment, it should be understood that the processor may be a central processing unit (english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The memory may comprise high speed RAM memory or may further comprise non-volatile storage NVM, such as at least one disk memory.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The scheme provided by the embodiment of the application is introduced aiming at the functions realized by the electronic equipment and the main control equipment. It will be appreciated that the electronic device or the master device, in order to implement the above-described functions, includes corresponding hardware structures and/or software modules that perform the respective functions. The present embodiments can be implemented in hardware or a combination of hardware and computer software in combination with the various exemplary elements and algorithm steps described in connection with the embodiments disclosed in the embodiments of the present application. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present application.
The application also provides a computer readable storage medium, wherein the computer readable storage medium stores computer execution instructions, and when a processor executes the computer execution instructions, the rescue well reentry track control method is realized.
The computer readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. In the alternative, the readable storage medium may be integral to the processor. The processor and the readable storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). The processor and the readable storage medium may reside as discrete components in an electronic device or a master device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. The rescue well reentry track control method is characterized by comprising the following steps of:
acquiring the relative position relation of a relief well and an accident well below a wellbore coincident point, wherein the wellbore coincident point is a sleeve collision wellbore coincident point where the relief well and the accident well are contacted;
obtaining the geometric position relation of the rescue well and the accident well according to the first well deviation and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation;
obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well inclination and the second azimuth angle of the accident well in a preset reentry depth;
adjusting the re-entry track of the relief well according to the two-dimensional change relation and the relative position relation;
the obtaining the relative position relation between the rescue well and the accident well comprises the following steps:
setting a plurality of measuring points according to a first preset straight line length on a rescue well track, and respectively obtaining the relative distance and the relative azimuth of each measuring point to a magnetic ranging point in the accident well, wherein the positions of the magnetic ranging points are kept unchanged when two adjacent measuring points are measured;
the obtaining the geometric position relationship between the relief well and the accident well according to the first well deviation and the first azimuth angle of the relief well comprises the following steps:
Acquiring a first included angle and a second included angle between two adjacent measuring points and a horizontal plane according to the first azimuth angle and the relative azimuth;
acquiring projection lengths of two adjacent measuring points on a horizontal plane according to the first well deviation and the first preset straight line length;
and obtaining the geometric distance between the rescue well and the accident well at two adjacent measuring points according to the first included angle, the second included angle and the projection length.
2. The method of claim 1, wherein said calibrating said geometric positional relationship into said relative positional relationship comprises:
obtaining a plurality of groups of magnetic ranging deviations according to the relative distance and the geometric distance of each measuring point;
and processing a plurality of groups of magnetic distance measurement deviations by a Kalman filtering or neural network method to obtain the distance and the azimuth of each measuring point and the magnetic distance measurement point in the maximum confidence interval.
3. The method of claim 1, wherein the deriving a two-dimensional change relationship of the relief well relative to the accident well from the second well deviation and the second azimuth of the accident well comprises:
obtaining the well deviation change of the rescue well relative to the accident well according to the first well deviation and the second well deviation;
Obtaining the azimuth angle change of the rescue well relative to the accident well according to the first azimuth angle and the second azimuth angle;
dividing the distance between the rescue well and the accident well into a plurality of change points according to a second preset straight line length, and obtaining the relative change quantity of two adjacent change points in the two-dimensional direction according to the well deviation change, the azimuth angle change, the second well deviation and the second preset straight line length.
4. A method according to claim 3, wherein said adjusting a relief well re-entry trajectory according to said two-dimensional change relationship and said relative positional relationship comprises:
acquiring a Cartesian coordinate relation of the rescue well relative to the accident well according to the relative position relation;
combining all first variation amounts of the first direction in the two-dimensional direction to obtain a first total movement amount of the relief well track in the first direction;
bringing the first total movement amount of the rescue well track into the Cartesian coordinate relationship to obtain a second total movement amount in a second direction in the two-dimensional direction;
and adjusting the reentry track of the relief well according to the second total movement amount.
5. The method of claim 1, wherein the method further comprises, prior to obtaining the relative positional relationship of the relief well and the accident well below the wellbore coincidence point:
Acquiring the space coordinates of the relief well and the space coordinates of the wellbore overlapping point between the relief well head and the wellbore overlapping point;
according to the pre-measured historical inclinometry data of the accident well, the space coordinates of the accident well below the coincident point of the well hole are obtained, and the well inclination and the azimuth angle of the rescue well drilling are adjusted according to the space coordinates of the accident well.
6. The method of claim 5, wherein the obtaining the spatial coordinates of the accident well below the wellbore coincidence point based on pre-measured historical inclinometry data of the accident well comprises:
setting a plurality of continuous interval points in the accident well, and acquiring a recursive formula of any two adjacent interval points in the accident well according to the space coordinates of the coincident points of the well bores and the historical inclinometry data of the accident well:
wherein, l' is the accident well depth in the historical inclinometry data; alpha' is the accident well inclination in the historical inclinometry data;an accident well azimuth in the historical inclinometry data; (x) N ,y N ,z N ) Spatial coordinates of the coincident point for the wellbore; (X) i ,Y i ,Z i ) The space coordinates of the accident well are obtained; i is any point in the accident well, i>1。
7. A relief well reentry trajectory control device, comprising:
The acquisition module is used for acquiring the relative position relation of the relief well and the accident well below a wellbore coincident point, wherein the wellbore coincident point is a sleeve collision wellbore coincident point where the relief well and the accident well are contacted;
the first processing module is used for obtaining the geometric position relation between the rescue well and the accident well according to the first well deviation and the first azimuth angle of the rescue well, and calibrating the geometric position relation into the relative position relation;
the second processing module is used for obtaining a two-dimensional change relation of the rescue well relative to the accident well according to the second well inclination and the second azimuth of the accident well in a preset reentry depth;
the adjusting module is used for adjusting the reentry track of the relief well according to the two-dimensional change relation and the relative position relation;
the acquisition module is used for acquiring the relative position relation between the rescue well and the accident well, and is specifically used for: setting a plurality of measuring points according to a first preset straight line length on a rescue well track, and respectively obtaining the relative distance and the relative azimuth of each measuring point to a magnetic ranging point in the accident well, wherein the positions of the magnetic ranging points are kept unchanged when two adjacent measuring points are measured;
The first processing module is specifically configured to, when obtaining the geometric positional relationship between the relief well and the accident well according to the first well deviation and the first azimuth angle of the relief well:
acquiring a first included angle and a second included angle between two adjacent measuring points and a horizontal plane according to the first azimuth angle and the relative azimuth;
acquiring projection lengths of two adjacent measuring points on a horizontal plane according to the first well deviation and the first preset straight line length;
and obtaining the geometric distance between the rescue well and the accident well at two adjacent measuring points according to the first included angle, the second included angle and the projection length.
8. An electronic device, comprising: a processor, and a memory communicatively coupled to the processor;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored in the memory to implement the method of any one of claims 1 to 6.
9. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to carry out the method of any one of claims 1 to 6.
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