CN114961560A - Rescue well reentry trajectory control method and device - Google Patents
Rescue well reentry trajectory control method and device Download PDFInfo
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- CN114961560A CN114961560A CN202210600439.2A CN202210600439A CN114961560A CN 114961560 A CN114961560 A CN 114961560A CN 202210600439 A CN202210600439 A CN 202210600439A CN 114961560 A CN114961560 A CN 114961560A
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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
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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 rescue well reentry trajectory control method and equipment, and relates to the technical field of rescue well drilling. The method comprises the following steps: acquiring the relative position relation between the relief well and the accident well below a well bore coincidence point, wherein the well bore coincidence point is a collision casing well bore coincidence point of the relief well and the accident well which are in contact with each other; obtaining a geometric position relation between the relief well and the accident well according to the first well deviation and the first azimuth angle of the relief well, and calibrating the geometric position relation into a relative position relation; obtaining a two-dimensional change relation of the rescue well relative to the accident well according to a second well deviation and a second azimuth angle of the accident well at the preset re-entry well depth; and adjusting the reentry track of the relief well according to the two-dimensional change relationship and the relative position relationship. 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 the continuous calibration of the rescue well track, and improves the control precision and the reentry efficiency of drilling the rescue well.
Description
Technical Field
The application relates to a rescue well drilling technology, in particular to a rescue well reentry trajectory control method and equipment.
Background
The drilling of the relief well is a special measure in oil and gas engineering, is suitable for well killing in blowout accidents, plugging of old wells in gas storage reservoirs, environmental protection treatment of difficult wells and the like, has multiple functions, and is an important guarantee for safe, efficient and green development of oil and gas resources.
Different from the conventional directional drilling, the target area of the relief well is difficult to be determined in advance, underground detection means such as magnetic ranging and the like are required, the relief well needs to be subjected to track control to be close to the accident well according to the measurement result, and the requirement on track control near a communication point is particularly strict. In the prior art, a magnetic ranging detection method is mainly used for receiving a magnetic field signal related to an accident well in a relief well, and the relative position relation between the relief well and the accident well is calculated through mature algorithm processing and control.
However, the result of magnetic distance measurement is related to the stratum property, the distance measurement error is large, in addition, the underground space is difficult to see through, a reliable verification means is lacked in the field of the measurement result, meanwhile, due to the fact that the magnetic beacon is not available in an open hole section, real-time distance measurement cannot be achieved, a new risk is brought to reentry due to the fact that a large entry angle is formed, the rescue well track control error is large, and reentry of the rescue well is difficult to achieve.
Disclosure of Invention
The application provides a rescue well reentry trajectory control method and device, which are used for solving the problems that the control error of magnetic ranging on a rescue well trajectory is large and rescue well reentry is difficult to realize.
In a first aspect, the application provides a control method for a reentry trajectory of a relief well, comprising:
acquiring the relative position relation between a relief well and an accident well below a well bore coincidence point, wherein the well bore coincidence point is a collision casing well bore coincidence point at which the relief well is in contact with the accident well;
obtaining a geometric position relation between the relief well and the accident well according to a first well deviation and a first azimuth angle of the relief 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 a second well deviation and a second azimuth angle of the accident well in a preset re-entry well depth;
and adjusting the reentry track of the relief well according to the two-dimensional change relationship and the relative position relationship.
In one possible design, the obtaining of the relative position relationship between the relief well and the accident well comprises:
arranging a plurality of measuring points on the track of the rescue well according to the length of a first preset straight line, and respectively obtaining the relative distance and the relative azimuth from 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 of the geometric position relation between the relief well and the accident well according to the first well deviation and the first azimuth angle of the relief well comprises:
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 the projection lengths of two adjacent measuring points on the horizontal plane according to the first well deviation and the length of the first preset straight line;
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 the multiple groups of magnetic ranging deviations by a Kalman filtering or neural network method to obtain the distance and the direction of each measuring point and the magnetic ranging point in the maximum confidence interval.
In one possible design, the obtaining a two-dimensional variation relationship of the relief well relative to the accident well according to a second well deviation and a second azimuth angle of the accident well includes:
obtaining the well deviation change of the relief well relative to the accident well according to the first well deviation and the second well deviation;
obtaining 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 relief 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 of the reentry trajectory of the relief well according to the two-dimensional variation relationship and the relative position relationship includes:
acquiring a Cartesian coordinate relation of the relief well relative to the accident well according to the relative position relation;
combining all first variable quantities in a first direction in the two-dimensional directions to obtain a first total movement amount of the rescue well track in the first direction;
substituting the first total movement amount of the rescue well track into the Cartesian coordinate relation 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 acquiring the relative position relationship between the relief well and the accident well below the well bore coincidence point, the method further comprises the following steps:
acquiring the space coordinate of the relief well and the space coordinate of the well bore coincidence point between the wellhead of the relief well and the well bore coincidence point;
and acquiring the space coordinates of the accident well below the well bore coincidence point according to the pre-measured historical inclination measurement data of the accident well, and adjusting the well inclination and the azimuth angle drilled by the relief well according to the space coordinates of the accident well.
In one possible design, the obtaining spatial coordinates of the accident well below the wellbore coincidence point according to the pre-measured historical inclination data of the accident well comprises:
setting a plurality of continuous interval points in the accident well, and acquiring a recursion formula of any two adjacent interval points in the accident well according to the space coordinate of the well bore coincident point and the historical inclination measurement data of the accident well:
in the formula, l' is the depth of the accident well in the historical inclination measurement data; alpha' is the well deviation of the accident well in the historical deviation measurement data;
the azimuth angle of the accident well in the historical inclination measurement data is obtained; (x) N ，y N ，z N ) The spatial coordinates of the well bore coincident points; (X) i ，Y i ，Z i ) Is the spatial coordinate of the accident well; i is any point in the accident well, i>1。
In a second aspect, the present application provides a relief well reentry trajectory control apparatus, comprising:
the system comprises an acquisition module, a processing module and a display module, wherein the acquisition module is used for acquiring the relative position relation between a relief well and an accident well below a well bore coincidence point, and the well bore coincidence point is a collision sleeve well bore coincidence point of the relief well and the accident well which are in contact with each other;
the first processing module is used for obtaining a geometric position relation between the relief well and the accident well according to a first well deviation and a first azimuth of the relief 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 a second well deviation and a second azimuth angle of the accident well at a preset reentry well depth;
and the adjusting module is used for adjusting the reentry track of the relief well according to the two-dimensional change relationship and the relative position relationship.
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;
the processor executes the computer execution instructions stored in the memory to realize the rescue well reentry trajectory control method.
In a fourth aspect, the present application provides a computer-readable storage medium having stored therein computer-executable instructions for implementing a relief well reentry trajectory control method when executed by a processor.
According to the rescue well reentry track control method and device, the relative position relation between the rescue well and the accident well is obtained below the well bore coincidence point, and the well bore coincidence point is a collision sleeve well bore coincidence point where the rescue well and the accident well are in contact; obtaining a geometric position relation between the rescue well and the accident well according to a first well deviation and a first azimuth angle of the rescue well, and calibrating the geometric position relation into a relative position relation; obtaining a two-dimensional change relation of the rescue well relative to the accident well according to a second well deviation and a second azimuth angle of the accident well at the preset re-entry well depth; the method for adjusting the reentry track of the rescue well according to the two-dimensional change relationship and the relative position relationship 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 the continuous calibration of the track of the rescue well, and improves the control precision and the reentry efficiency of drilling the rescue well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a rescue well reentry trajectory control method provided by the present application;
fig. 2 is a first flowchart of a rescue well reentry trajectory control method provided by the present application;
fig. 3 is a second flowchart of a rescue well reentry trajectory control method provided by the present application;
FIG. 4 is a schematic diagram of a triangular navigation calibration calculation model provided in the present application;
fig. 5 is a flow chart of a rescue well reentry trajectory control method provided by the application;
FIG. 6 is a schematic diagram of a three-dimensional to two-dimensional calculation model of a relative track of a relief well and an accident well according to the application;
fig. 7 is a fourth flowchart of the rescue well reentry trajectory control method provided by the present application;
fig. 8 is a schematic structural diagram of a rescue well reentry trajectory control device provided by the present application;
fig. 9 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The application has the following specific application scenarios:
fig. 1 is a schematic view of an application scenario of the rescue well reentry trajectory control method provided by the application. As shown in fig. 1, according to the rescue well reentry trajectory control method provided by the present application, before a well head of a rescue well 101 hits a casing of two wells, the rescue well 101 is drilled to a detectable range of magnetic distance measurement by using a conventional orientation method, a magnetic distance measuring instrument for measuring the relative position relationship between the rescue well 101 and an accident well 102 in real time and an inclinometer for measuring the advancing direction of a drill bit of the rescue well 101 are installed at the drill bit, as the accident well gradually gets away from the ground, the measurement error thereof gradually increases, for the accident well 102, the error ellipse 103 thereof gradually increases from top to bottom, after the rescue well 101 hits the casing of the accident well 102, a borehole reentry point 104 is formed, the error ellipse 103 of the accident well 102 can be calibrated by the borehole reentry point 104, then the accident well 102 is calibrated onto the rescue well 101, so that the rescue well 101 gradually gets close to the position of the accident well 102 and is below the borehole reentry point 104, the geometric position relation is obtained through a triangular navigation method, the relative position relation is calibrated through the geometric position relation, when the drill bit advances to the position near the preset well depth, the longitudinal depth of the drill bit can be considered to meet the conditions due to the fact that the drill bit is close to the reentrant point 105, the position of the two-dimensional direction except the initial longitudinal direction is only required to be adjusted at the moment, the reentrant conditions can be met, therefore, the variable quantity of the two-dimensional direction is obtained through reverse triangular navigation, the composite reentrant accident well is realized according to the variable quantity adjustment of the two-dimensional direction, and the technical problems in the prior art are solved.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 2 is a first flowchart of a rescue well reentry trajectory control method provided by the application. As shown in fig. 2, a rescue well reentry trajectory control method includes:
s201, obtaining the relative position relation between a relief well and an accident well below a well bore coincident point, wherein the well bore coincident point is a well bore coincident point of a collision sleeve, which is formed by contacting the relief well and the accident well;
specifically, the well bore coincidence point is the closest place of the first intersection distance between the relief well and the accident well, the situation that the drill head of the relief well reaches the vicinity of the accident well can be determined according to the well bore coincidence point, and then the track of the relief well needs to be finely controlled to re-drill into the accident well, so that the relative position relationship between the two wells below the well bore coincidence point needs to be obtained, wherein the relative position relationship mainly comprises the relative distance and the relative azimuth angle between the two wells, and the measurement is carried out by a magnetic distance measuring instrument.
S202, obtaining a geometric position relation between the relief well and the accident well according to a first well deviation and a first azimuth angle of the relief well, and calibrating the geometric position relation into the relative position relation;
specifically, the rescue well is dynamically changed in track, the depth, the inclination and the direction of the drill bit can be obtained by arranging the inclinometer at the drill bit, and further the depth, the well inclination and the azimuth angle of the rescue well can be correspondingly obtained, for the rescue well, when the drilling distance is small enough, the drilling route of the rescue well can be considered to be a straight line direction, so that the rescue well can be considered as a broken line path formed by combining a plurality of straight line segments, the projection of the rescue well on a horizontal plane can be obtained for two adjacent points, the relative distance and the azimuth included angle between the magnetic distance meter and the two adjacent points are respectively obtained, the position of the magnetic distance meter is considered to be fixed within a short drilling distance, therefore, the geometric distance between the magnetic distance meter and the two adjacent points can be obtained according to the corresponding relationship of corners of a triangle formed by the magnetic distance meter and the two adjacent points, and the magnetic distance deviation can be obtained by subtracting the geometric distance from the measured relative distance, the maximum confidence interval of the magnetic ranging deviation can be obtained by comparing a plurality of groups of magnetic ranging deviations, so that the relative distance with larger error measured by the magnetic range finder is eliminated, and the calibration of the relative position relation is realized.
S203, obtaining a two-dimensional change relation of the relief well relative to the accident well according to a second well deviation and a second azimuth angle of the accident well at a preset re-entry well depth;
specifically, before the rescue well is drilled, the depth of the rescue well re-entering the accident well, namely the preset re-entering well depth, is set according to the accident well, the preset re-entering well depth is a depth range, the re-entering point is only one point in the preset re-entering well depth range, namely the longitudinal direction is constrained, the change influence of the track can not be considered, and at the moment, the three-dimensional spatial relationship can be simplified into the two-dimensional spatial relationship. The difference value of the well deviation and the azimuth angle between the two wells can be obtained according to the first well deviation and the first azimuth angle of the relief well and the second well deviation 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 in a small enough short range.
And S204, adjusting the reentry trajectory of the relief well according to the two-dimensional change relationship and the relative position relationship.
Specifically, the adjustment of the position of any one of the two directions of the two-dimensional relationship affects the other direction, so that a Cartesian coordinate relationship between the two directions is established, the changes in the two directions are projected onto a Cartesian coordinate system, the obtained multiple groups of two-dimensional relationship are combined to respectively obtain the total movement amount on the two Cartesian coordinate systems, then the rescue well and the accident well can be superposed by only referring to the Cartesian coordinate system and converting the total movement amount to the zero point of the Cartesian coordinate system, and the process of re-entering the track 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 well bore coincident point, wherein the well bore coincident point is a well bore coincident point of a collision sleeve, which is formed by contacting the relief well and the accident well; obtaining a geometric position relation between the rescue well and the accident well according to a first well deviation and a first azimuth angle of the rescue well, and calibrating the geometric position relation into a relative position relation; obtaining a two-dimensional change relation of the rescue well relative to the accident well according to a second well deviation and a second azimuth angle of the accident well at the preset re-entry well depth; the method for adjusting the reentry track of the rescue well according to the two-dimensional change relationship and the relative position relationship 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 the continuous calibration of the track of the rescue well, and improves the control precision and the reentry efficiency of drilling the rescue well.
The rescue well reentry trajectory control method of the present application is described in detail below with reference to a specific embodiment.
Fig. 3 is a flowchart of a second method for controlling a reentry trajectory of a relief well according to the present application. As shown in fig. 3, based on the above embodiment, this embodiment describes in detail an implementation manner of obtaining a geometric positional relationship between the relief well and the accident well according to a first well deviation and a first azimuth of the relief well, and calibrating the geometric positional relationship into the relative positional relationship.
S301, arranging 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 direction from 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;
specifically, the first measuring point A is obtained by using a magnetic distance measuring instrument 1 A first distance d of 1 And a first orientation theta 1 Second measurement point A 2 A second distance d 2 And a second orientation theta 2 And by analogy, the distance between two adjacent measuring points is set to be smaller, for example, less than 5m, and at this time, the connecting line between two measuring points is a straight line segment, which can be represented by the following triangle navigation calibration calculation model:
fig. 4 is a schematic diagram of a triangle navigation calibration calculation model provided in the present application. As shown in fig. 4, the geometric position relationship is obtained by using a triangle navigation calibration calculation model. When the relief well is deviated from a measuring point by a well deviation alpha 1 And azimuth angle
Drilling forward 1 When the well reaches another measuring point, the track of the relief well is projected to a well coincident point A 0 As a starting point, an azimuth angle of
On the ray of (A), the projection of each measuring point corresponding to 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;
in particular according to a first azimuth angle
And a first orientation theta 1 Obtaining a first included angle
According to a first azimuth angle
And a second orientation theta 2 Obtaining a second included angle
S303, acquiring the projection lengths of two adjacent measuring points on a horizontal plane according to the first well deviation and the length of the first preset straight line;
in particular, according to a first well deviation α 1 And a first predetermined linear 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 the first included angle
Second included angle
And a projection length K 1 Obtaining a first measuring point A by using the ratio relation of triangular navigation 1 First geometric distance d 'to accident well' 1 And a second measuring point A 2 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;
in particular, it relates toD 'of the acquired first geometric distance' 1 A first distance d from the magnetic distance meter 1 Subtracting to obtain the first magnetic distance measurement deviation delta 1 D 'of the second geometric distance to be acquired' 2 And a second distance d obtained by a magnetic distance meter 2 Subtracting to obtain the second magnetic distance measurement deviation delta 2 ：
And analogizing in turn, and acquiring the magnetic ranging deviation of all the measuring points.
S306, processing the multiple groups of magnetic ranging deviations through a Kalman filtering or neural network method to obtain the distance and the direction 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 method or a neural network method, the specific processing method is the prior art, further details are not described here, the probability that the magnetic ranging output result is larger than the normal value can be obtained after processing, and the magnetic ranging result in the maximum confidence interval can be given according to the processing result, so that the distance and azimuth data of which magnetic ranging is available and which magnetic ranging is unavailable are determined in an auxiliary manner, and the accuracy of trajectory control is improved.
According to the embodiment of the invention, the magnetic ranging calibration is carried out on the close-distance accompanying section after the relief well reaches the well re-entry point, the geometric position relation is obtained through the triangular navigation proportional relation, and the relative position relation obtained through the magnetic distance meter is calibrated by using the geometric position relation, so that double insurance is realized, the reliability of the data obtained by the magnetic distance meter is improved, and the precision of the magnetic ranging result on the track control of the relief well is improved.
Fig. 5 is a flow chart of a rescue well reentry trajectory control method provided by the application. As shown in fig. 5, on the basis of the above embodiment, the embodiment describes in detail an implementation manner of adjusting the reentry trajectory of the relief well according to the two-dimensional change relationship and the relative position relationship.
S501, dividing the distance between the relief well and the accident well into a plurality of change points according to a second preset straight line length at a preset reentry well depth, and obtaining well deviation change of the relief well relative to the accident well according to the first well deviation and the second well deviation;
specifically, the preset reentry well depth is a preset rescue well reentry appointed depth, the appointed depth is a determined range, and according to a well track inversion method disclosed in patent CN113756787A, the method can be used for solving the problem of the accident well at any measuring point A in an inversion mode n Well deviation of alpha' n And azimuth angle
Since the prior art, the present application is not described in detail herein, and the relief well is at A n Well deviation alpha at survey point n And azimuth angle
Can be obtained by an inclinometer, and is thus obtained from A n Point to A n+1 Measuring point drilling distance is l n Then according to A n First well deviation alpha of relief well at measuring point n And a second well deviation alpha 'of the accident well' n Obtaining the well deviation (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;
in particular according to A n First azimuth of rescue well at survey point
And a second azimuth of the accident well
Obtaining the azimuth angle change of the rescue well relative to the accident well
S503, obtaining the relative variation of two adjacent variation points in the two-dimensional direction according to the well deviation variation, the azimuth angle variation, the second well deviation and the second preset straight line length;
FIG. 6 is a schematic diagram of a three-dimensional to two-dimensional calculation model of a relative track of a relief well and an accident well. As shown in FIG. 6, according to well deviation (α' n -α n ) Change in azimuth
And a second predetermined linear length l n And a second well deviation alpha 'of the accident well' n Obtained from A n Point to A n+1 The variation relationship of the measuring points is as follows:
s504, acquiring a Cartesian coordinate relationship of the rescue well relative to the accident well according to the relative position relationship;
particularly, the accident well needs to be re-entered at a specified well depth, the vertical coordinate in a three-dimensional space is constrained, 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 simultaneously, the control effect of the rescue well track cannot be pre-judged due to the difference of the stratum and the interference of a magnetic instrument, so that the relational architecture of the three-dimensional space becomes complex, and the variables are difficult to control. Therefore, near the near reentry well depth, it is necessary to change the relief well from three dimensions to two dimensions with respect to the accident well trajectory. Magnetic distance measurement is at A n The relative position relation between the rescue well and the accident well is a distance d n Orientation theta n And converting the relationship into a Cartesian coordinate relationship as follows:
s505, combining all first variable quantities in a first direction in the two-dimensional directions to obtain a first total movement quantity of the relief well track in the first direction;
in particular, the first direction x is adjusted in superposition until A is reached m Point on, make
In A m D at a point n,x Is zero, only d is present n,y Deviation in direction, so that subsequently only fine tuning of the second direction y is required to effect re-entry into the accident well.
S506, 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 S507, adjusting the reentry track of the rescue well according to the second total movement amount.
Specifically, because two directions are correlated in a cartesian coordinate relationship, the first direction is inevitably influenced when the second direction is finely adjusted, and therefore, the adjustment of the two directions needs to be repeatedly performed until the d of the two directions is enabled n,x And d n,y The directions are all zero, and the corresponding variable quantity is the movement quantity of the rescue well needing to be controlled.
According to the embodiment of the invention, the longitudinal space falling into the designated well depth range in the three-dimensional space is ignored near the well depth reentry point of the designated accident well, and only the moving distances in the other two directions are adjusted.
Fig. 7 is a fourth flowchart of the rescue well reentry trajectory control method provided by the present application. As shown in fig. 7, on the basis of the above-mentioned embodiment, the present embodiment describes in detail the operation manner before acquiring the relative positional relationship between the relief well and the accident well.
S701, acquiring a space coordinate of the relief well and a space coordinate of the well bore coincidence point between the wellhead of the relief well and the well bore coincidence point;
in particular, forSufficiently small separation, space coordinate (x) at i-th position of any point i ，y i ，z i ) Can pass through the space coordinate (x) at the (i-1) th position i-1 ，y i-1 ，z i-1 ) The recursion is integrated, and the formula is:
wherein l is the depth of the relief well obtained by an inclinometer, alpha and
the well deviation and the azimuth angle of the relief well are acquired by an inclinometer. Because the space coordinate of the wellhead of the relief well is determined, the space coordinate (x) of the relief well at the well coincident point can be obtained by recursion N ，y N ，z N )。
S702, arranging a plurality of continuous interval points in the accident well, and acquiring a recursion formula of any two adjacent interval points in the accident well according to the space coordinate of the well bore coincident point and the historical inclination measurement data of the accident well;
specifically, below the well bore coincidence, for a sufficiently small interval, the relief well also satisfies the recursive integral of the spatial coordinates, and therefore, the historical inclinometry data of the known accident well is used to be substituted into the recursive formula, and finally the spatial coordinates (x) of the relief well at the well bore coincidence point are recursive N ，y N ，z N ) The space coordinate of the accident well can be calibrated to the rescue well.
S703, acquiring the space coordinates of the accident well below the well bore coincident point according to a recursion formula of any two adjacent spaced points in the accident well;
specifically, the accident well spatial coordinates are:
in the formula, l' is a through inclinometerAcquired historical data of the depth of the well at accident, alpha' and
the historical data of the well deviation and the azimuth angle of the accident well obtained by the inclinometer.
S704, adjusting the well deviation and the azimuth angle of the rescue well drilling according to the accident well space coordinate.
According to the embodiment of the invention, the space coordinates of the well bore coincident points are firstly deduced through a recursion formula, then the space coordinates of all the accident wells below the well bore coincident points can be deduced through the recursion formula according to the space coordinates of the well bore coincident points and the historical inclination measurement data of the accident wells, the relief wells are associated with the accident wells, the drilling well inclination and the drilling azimuth angle of the relief wells are adjusted according to the space coordinates of the accident wells obtained through recursion, so that the data accumulation error above the well bore coincident points is eliminated, the referential performance of the historical inclination measurement data of the accident wells obtained by an inclinometer is enhanced, numerous error influences caused in the process of adjusting the relative position relation only by adopting magnetic ranging are avoided, and the reentry efficiency is improved.
In the embodiment of the present invention, the electronic device or the main control device may be divided into the functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware or a form of a software functional module. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 8 is a schematic structural diagram of a rescue well reentry trajectory control device provided by the present application. As shown in fig. 8, the apparatus 80 includes:
an obtaining module 801, configured to obtain a relative position relationship between a relief well and an accident well below a wellbore coincidence point, where the wellbore coincidence point is a cased wellbore coincidence point where the relief well contacts the accident well;
specifically, the obtaining module 801 is specifically configured to: acquiring the space coordinate of the relief well and the space coordinate of the well bore coincidence point between the wellhead of the relief well and the well bore coincidence point; and acquiring the space coordinates of the accident well below the well bore coincidence point according to the pre-measured historical inclination measurement data of the accident well, and adjusting the well inclination and the azimuth angle drilled by the relief well according to the space coordinates of the accident well.
Furthermore, a plurality of continuous interval points are arranged in the accident well, a recursion formula of any two adjacent interval points in the accident well is obtained according to the space coordinate of the well bore coincident point and the historical inclination measurement data of the accident well, and the space coordinate of the accident well below the well bore coincident point is obtained according to the recursion 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: arranging a plurality of measuring points on the track of the rescue well according to the length of a first preset straight line, and respectively obtaining the relative distance and the relative azimuth from 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 the projection lengths of two adjacent measuring points on the horizontal plane according to the first well deviation and the length of the first preset straight line; 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, obtaining a plurality of groups of magnetic ranging deviations according to the relative distance and the geometric distance of each measuring point; and processing the multiple groups of magnetic ranging deviations by a Kalman filtering or neural network method to obtain the distance and the direction of each measuring point and the magnetic ranging point in the maximum confidence interval.
The second processing module 803 is configured to obtain, at 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 relief well relative to the accident well according to the first well deviation and the second well deviation; obtaining 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 relief 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, acquiring a Cartesian coordinate relation of the relief well relative to the accident well according to the relative position relation; combining all first variable quantities in a first direction in the two-dimensional directions to obtain a first total movement amount of the rescue 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.
And the adjusting module 804 is used for adjusting the reentry trajectory of the relief well according to the two-dimensional change relationship and the relative position relationship.
The rescue well reentry trajectory control device provided by the embodiment can execute the rescue well reentry trajectory control method of the above embodiment, and the implementation principle and the technical effect are similar, and the detailed description is omitted here.
In a specific implementation of the rescue well reentry trajectory control apparatus, the modules may be implemented as a processor, and the processor may execute computer-executable instructions stored in a memory, so that the processor executes the rescue well reentry trajectory control method.
Fig. 9 is a schematic structural diagram of an electronic device provided in the present application. As shown in fig. 9, the electronic apparatus 90 includes: at least one processor 901 and memory 902. The electronic device 90 further comprises a communication component 903. The processor 901, the memory 902, and the communication section 903 are connected by a bus 904.
In a specific implementation, the at least one processor 901 executes the computer-executable instructions stored in the memory 902, so that the at least one processor 901 performs the rescue well reentry trajectory control method as performed by the electronic device.
For a specific implementation process of the processor 901, reference may be made to the above method embodiments, which implement principles and technical effects are similar, and details of this embodiment are not described herein again.
In the above embodiments, it should be understood that the Processor may be a Central Processing Unit (CPU), other general-purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. 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 invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise high speed RAM memory and may also include non-volatile storage NVM, such as at least one disk memory.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The above-mentioned scheme provided by the embodiment of the present invention is introduced with respect to the functions implemented by the electronic device and the main control device. It is understood that the electronic device or the main control device includes hardware structures and/or software modules for performing the functions in order to realize the functions. The elements and algorithm steps of each example described in connection with the embodiments disclosed in the embodiments disclosed herein may be embodied as hardware or in a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present teachings.
The application also provides a computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the rescue well reentry trajectory control method is realized.
The computer-readable storage medium 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 or optical disk. Readable storage media can be any available media 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. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in an electronic device or a host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method for a reentry trajectory of a relief well is characterized by comprising the following steps:
acquiring the relative position relation between a relief well and an accident well below a well bore coincidence point, wherein the well bore coincidence point is a collision casing well bore coincidence point at which the relief well is in contact with the accident well;
obtaining a geometric position relation between the relief well and the accident well according to a first well deviation and a first azimuth angle of the relief 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 a second well deviation and a second azimuth angle of the accident well in a preset re-entry well depth;
and adjusting the reentry track of the relief well according to the two-dimensional change relationship and the relative position relationship.
2. The method of claim 1, wherein obtaining the relative position relationship between the relief well and the accident well comprises:
arranging a plurality of measuring points on the track of the rescue well according to the length of a first preset straight line, and respectively obtaining the relative distance and the relative azimuth from 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 of the geometric position relation between the relief well and the accident well according to the first well deviation and the first azimuth angle of the relief well comprises:
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 the projection lengths of two adjacent measuring points on the horizontal plane according to the first well deviation and the length of the first preset straight line;
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.
3. The method of claim 2, 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 the multiple groups of magnetic ranging deviations by a Kalman filtering or neural network method to obtain the distance and the direction of each measuring point and the magnetic ranging point in the maximum confidence interval.
4. The method of claim 1, wherein obtaining a two-dimensional changing relationship of the relief well relative to the accident well based on a second well deviation and a second azimuth of the accident well comprises:
obtaining the well deviation change of the relief well relative to the accident well according to the first well deviation and the second well deviation;
obtaining 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 relief 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.
5. The method of claim 4, wherein the adjusting of the reentry trajectory of the relief well according to the two-dimensional variation relationship and the relative position relationship comprises:
acquiring a Cartesian coordinate relation of the relief well relative to the accident well according to the relative position relation;
combining all first variable quantities in a first direction in the two-dimensional directions to obtain a first total movement amount of the rescue 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.
6. The method according to claim 1, wherein before acquiring the relative position relationship between the relief well and the accident well below the well bore coincidence point, the method further comprises:
acquiring the space coordinate of the relief well and the space coordinate of the well bore coincidence point between the wellhead of the relief well and the well bore coincidence point;
and acquiring the space coordinates of the accident well below the well bore coincidence point according to the pre-measured historical inclination measurement data of the accident well, and adjusting the well inclination and the azimuth angle drilled by the relief well according to the space coordinates of the accident well.
7. The method of claim 6, wherein the obtaining of the spatial coordinates of the failed well below the wellbore coincidence point from the pre-measured historical slope data of the failed well comprises:
setting a plurality of continuous interval points in the accident well, and acquiring a recursion formula of any two adjacent interval points in the accident well according to the space coordinate of the well bore coincident point and the historical inclination measurement data of the accident well:
in the formula, l' is the depth of the accident well in the historical inclination measurement data; alpha' is the well deviation of the accident well in the historical inclination data;
the azimuth of the accident well in the historical inclination data is obtained; (x) N ，y N ，z N ) The spatial coordinates of the well bore coincident points; (X) i ，Y i ，Z i ) Is the spatial coordinate of the accident well; i is any point in the accident well, and i is more than 1.
8. A rescue well reentry trajectory control apparatus, comprising:
the system comprises an acquisition module, a processing module and a display module, wherein the acquisition module is used for acquiring the relative position relation between a relief well and an accident well below a well bore coincidence point, and the well bore coincidence point is a collision sleeve well bore coincidence point of the relief well and the accident well which are in contact with each other;
the first processing module is used for obtaining a geometric position relation between the rescue well and the accident well according to a first well deviation and a 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 a second well deviation and a second azimuth angle of the accident well at a preset reentry well depth;
and the adjusting module is used for adjusting the reentry track of the relief well according to the two-dimensional change relationship and the relative position relationship.
9. 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 by the memory to implement the method of any of claims 1 to 7.
10. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, are configured to implement the method of any one of claims 1 to 7.
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