Tight gas reservoir horizontal well control range drawing method and system

Abstract

The invention relates to a tight gas reservoir horizontal well control range drawing method and system. The tight gas reservoir horizontal well control range drawing method comprises the following steps that horizontal well control ellipse related parameters are obtained through calculation on the basis of target point coordinates and well bottom coordinates of a horizontal well on a geodetic coordinate system and the area of a horizontal well control ellipse; based on the related parameters of the horizontal well control ellipse, a control point in any direction on the horizontal well control ellipse curve is obtained through calculation, namely control range curve data of the horizontal well control ellipse are obtained; and geological software is used for loading the control range curve data, and the horizontal well control range form is obtained. According to the method, the control range curve of the tight gas horizontal well with the determined control area and the corresponding coordinates of the horizontal section can be drawn, errors and uncertainty caused by manual drawing are avoided, and scientific research and analysis of technicians are facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of gas reservoir exploitation, and in particular relates to a method and system for drawing a control range of a horizontal well in a tight gas reservoir. Background Art

[0002] The control range of a gas well refers to the range involved in the production and leakage of the gas well, which is generally obtained through gas reservoir engineering using gas well production data and gas reservoir physical parameters. At present, the technology for characterizing the control range of tight gas horizontal wells at home and abroad only stays at the relevant calculation method of the control area: for example, in the prior art, based on the basic parameters of the oil and gas reservoir and the double logarithmic curve of the well test, the flow time of the formation fluid in the non-fracture section on the short semi-axis and the flow time of the formation fluid in the non-horizontal well section on the long semi-axis are calculated, and the short semi-axis of the elliptical leakage area of ​​the horizontal well and the long semi-axis of the elliptical leakage area of ​​the multi-stage fracturing horizontal well are calculated by formula, and then the control area of ​​a single oil and gas well is calculated. This method provides a method for calculating the control area of ​​horizontal wells in tight gas reservoirs. The shape and drawing method of the control range are not clarified. At present, the control range of horizontal wells in tight gas reservoirs is mostly drawn by manual hand-drawing, which has the problems of time-consuming and large control range errors. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for drawing the control range of horizontal wells in tight gas reservoirs in order to solve the above problems.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A method for drawing a control range of a horizontal well in a tight gas reservoir comprises the following steps:

[0006] Based on the target point coordinates, bottom hole coordinates and the area of ​​the horizontal well control ellipse in the geodetic coordinate system, the relevant parameters of the horizontal well control ellipse are calculated;

[0007] Based on the relevant parameters of the horizontal well control ellipse, a control point in any direction on the horizontal well control ellipse curve is calculated, that is, control range curve data of the horizontal well control ellipse is obtained;

[0008] The control range curve data is loaded using geological software to obtain the horizontal well control range shape.

[0009] As a further optimization scheme of the present invention, the parameters related to the horizontal well control ellipse include the horizontal well horizontal section length L, the horizontal well horizontal section half length d, the horizontal well control ellipse major axis length 2a, the horizontal well control ellipse semi-major axis length a, the horizontal well control ellipse area S, the horizontal well control ellipse semi-minor axis length b, the horizontal well control ellipse focal length c, the horizontal well control ellipse center point coordinates (x 3 ,y 3), the coordinates of the two foci of the horizontal well control ellipse F 1 (x 4 ,y 4 ), F 2 (x 5 ,y 5 ).

[0010] As a further optimization scheme of the present invention, the specific process of calculating the relevant parameters of the horizontal well control ellipse based on the target point coordinates, the bottom hole coordinates and the area of ​​the horizontal well control ellipse of the horizontal well in the geodetic coordinate system is as follows:

[0011] Set the target point coordinates and bottom coordinates of the horizontal well in the geodetic coordinate system to be (x 1 ,y 1 ) and (x 2 ,y 2 );

[0012] The coordinates of the target point of the horizontal well (x 1 ,y 1 ) and the bottom coordinate (x 2 ,y 2 ) Calculate the horizontal section length L and the half length d of the horizontal section of the horizontal well, the calculation formula is as follows;

[0013]

[0014] d=L / 2; (2)

[0015] The major axis length 2a of the horizontal well control ellipse is calculated based on the horizontal section length L. The calculation formula is as follows:

[0016] 2a=1.2×L; (3)

[0017] Where a represents the length of the semi-major axis of the horizontal well control ellipse;

[0018] The semi-minor axis length b of the horizontal well control ellipse is calculated according to the area S of the horizontal well control ellipse and the semi-major axis length a of the horizontal well control ellipse. The calculation formula is as follows 4;

[0019] b=S / a / π; (4)

[0020] The focal length c of the horizontal well control ellipse is calculated according to the semi-major axis length a of the horizontal well control ellipse and the semi-minor axis length b of the horizontal well control ellipse. The calculation formula is as follows:

[0021]

[0022] The coordinates of the target point of the horizontal well (x 1 ,y 1 ) and the bottom coordinate (x 2 ,y 2) Calculate the coordinates of the center point of the horizontal well control ellipse (x 3 ,y 3 ), the calculation formula is as follows;

[0023]

[0024]

[0025] The center coordinates of the ellipse (x 3 ,y 3 ), horizontal well horizontal section target point coordinates (x 1 ,y 1 ) and the bottom coordinate (x 2 ,y 2 ), the focal length c of the horizontal well control ellipse and the half length d of the horizontal section of the horizontal well are used to calculate the coordinates of the two focal points of the horizontal well control ellipse. 1 (x 4 ,y 4 ), F 2 (x 5 ,y 5 ), the calculation formula is as follows;

[0026]

[0027]

[0028]

[0029]

[0030] As a further optimization scheme of the present invention, the specific process of calculating the control points in any direction on the horizontal well control ellipse curve based on the relevant parameters of the horizontal well control ellipse, that is, obtaining the control range curve data of the horizontal well control ellipse is as follows:

[0031] A polar coordinate system is established with the center point of the horizontal well control ellipse as the origin of the coordinate system, the east direction as the positive direction of the X axis, the north direction as the positive direction of the Y axis, and the counterclockwise direction as the positive direction of the angle;

[0032] In the polar coordinate system, select any point A(θ, b), where θ is the angle between point A and the due east direction in the polar coordinate system, and b is the length of the minor semi-axis of the control ellipse; calculate the geodetic coordinates (x 6 ,y 6 ), the formula is as follows:

[0033] x 6 =x 3 +b·cosθ; (12)

[0034] y6 =y 3 +b·sinθ; (13)

[0035] Calculate point A and the two foci F of the horizontal well control ellipse 1 , F 2 The sum of the distances A d , the calculation formula is as follows:

[0036]

[0037] Judgment A d The relationship with the major axis 2a of the ellipse is that when |A d When -2a|≤δ, δ is the precision error, then point A is considered to be a control point in the θ direction of the horizontal well control ellipse;

[0038] When|A d When -2a|>δ, take the new coordinates of point A as (θ, b+△r), and use formula 12 and formula 13 to calculate the new geodetic coordinates of point A (x 6 ,y 6 ), and use formula 14 to calculate the new A d , and re-judge until |A is satisfied d -2a|≤δ, then point A is considered to be a control point in the θ direction of the horizontal well control ellipse, and finally the coordinates of point A (x 6 ,y 6 ) is defined as the coordinates of a control point of the horizontal well control ellipse; wherein △r is the cyclic iteration step increment of the preset A point coordinates;

[0039] Judgment A d After the relationship with the major axis 2a of the ellipse, the size of θ in the coordinates of point A (θ, b) is changed until a control point in any direction on the horizontal well ellipse control curve is found, that is, the control range curve data of the horizontal well control ellipse is obtained.

[0040] A system for drawing the control range of a horizontal well in a tight gas reservoir, comprising:

[0041] The ellipse parameter calculation module is used to calculate the relevant parameters of the horizontal well control ellipse based on the target point coordinates and the bottom hole coordinates of the horizontal well in the geodetic coordinate system;

[0042] A curve data calculation module, used to calculate the control points in any direction on the horizontal well control ellipse curve based on the relevant parameters of the horizontal well control ellipse, that is, to obtain the control range curve data of the horizontal well control ellipse;

[0043] The control range morphology display module is used to load the control range curve data using geological software to obtain the horizontal well control range morphology.

[0044] An electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0045] Memory, for storing computer programs;

[0046] The processor is used to implement a method for drawing a control range of a horizontal well in a tight gas reservoir when executing a program stored in the memory.

[0047] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements a method for drawing a control range of a horizontal well in a tight gas reservoir.

[0048] The beneficial effects of the present invention are:

[0049] The present invention can draw the control range curve for the tight gas horizontal well whose control area and corresponding coordinates of the horizontal section have been determined, thus avoiding the error and uncertainty of manual drawing; the computer simulation calculation can be conveniently realized, and the parameters such as the gas well control area, the target point coordinates and the bottom hole coordinates are inputted, the computer can quickly calculate the control point coordinates of the horizontal well control range curve, and batch calculation of multiple wells can be performed, which can be directly loaded and applied by software such as GeoMap and Petrel, facilitating the scientific research analysis of technical personnel; in view of the limitations of the current method for drawing the control range of horizontal wells in tight gas reservoirs, a method for automatically drawing the control range of horizontal wells using the relevant coordinates and control area of ​​the horizontal well can realize the fast, accurate and batch drawing of the control range of horizontal wells in tight gas reservoirs. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a flow chart of the method of the present invention;

[0051] Figure 2 It is a schematic diagram of the control points of the elliptic curve for calculating the horizontal well control of the present invention;

[0052] Figure 3 It is a flow chart of calculating the ellipse control points of a horizontal well control according to the present invention;

[0053] Figure 4 is a horizontal well control elliptic curve and control point diagram of the horizontal well H1 in an embodiment of the present invention;

[0054] Figure 5 is a system structure block diagram in an embodiment of the present invention;

[0055] Figure 6 It is a block diagram of the device structure in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0057] like Figure 1 As shown, a method for drawing a control range of a horizontal well in a tight gas reservoir comprises the following steps:

[0058] Based on the target point coordinates, bottom hole coordinates and the area of ​​the horizontal well control ellipse in the geodetic coordinate system, the relevant parameters of the horizontal well control ellipse are calculated;

[0059] Based on the relevant parameters of the horizontal well control ellipse, a control point in any direction on the horizontal well control ellipse curve is calculated, that is, control range curve data of the horizontal well control ellipse is obtained;

[0060] The control range curve data is loaded using geological software to obtain the horizontal well control range shape.

[0061] like Figure 2 As shown, the parameters related to the horizontal well control ellipse include the horizontal well horizontal section length L, the horizontal well horizontal section half length d, the horizontal well control ellipse major axis length 2a, the horizontal well control ellipse semi-major axis length a, the horizontal well control ellipse area S, the horizontal well control ellipse semi-minor axis length b, the horizontal well control ellipse focal length c, the horizontal well control ellipse center point coordinates (x 3 ,y 3 ), the coordinates of the two foci of the horizontal well control ellipse F 1 (x 4 ,y 4 ), F 2 (x 5 ,y 5 ).

[0062] The specific process of calculating the relevant parameters of the horizontal well control ellipse based on the target point coordinates, bottom hole coordinates and area of ​​the horizontal well control ellipse in the geodetic coordinate system is as follows:

[0063] Set the target point coordinates and bottom coordinates of the horizontal well in the geodetic coordinate system to be (x 1 ,y 1 ) and (x 2 ,y 2 );

[0064] The coordinates of the target point of the horizontal well (x 1 ,y 1 ) and the bottom coordinate (x 2 ,y 2) Calculate the horizontal section length L and the half length d of the horizontal section of the horizontal well, the calculation formula is as follows;

[0065]

[0066] d=L / 2; (2)

[0067] The major axis length 2a of the horizontal well control ellipse is calculated based on the horizontal section length L. The calculation formula is as follows:

[0068] 2a=1.2×L; (3)

[0069] Where a represents the length of the semi-major axis of the horizontal well control ellipse;

[0070] The semi-minor axis length b of the horizontal well control ellipse is calculated according to the area S of the horizontal well control ellipse and the semi-major axis length a of the horizontal well control ellipse. The calculation formula is as follows 4;

[0071] b=S / a / π; (4)

[0072] The focal length c of the horizontal well control ellipse is calculated according to the semi-major axis length a of the horizontal well control ellipse and the semi-minor axis length b of the horizontal well control ellipse. The calculation formula is as follows:

[0073]

[0074] The coordinates of the target point of the horizontal well (x 1 ,y 1 ) and the bottom coordinate (x 2 ,y 2 ) Calculate the coordinates of the center point of the horizontal well control ellipse (x 3 ,y 3 ), the calculation formula is as follows;

[0075]

[0076]

[0077] The center coordinates of the ellipse (x 3 ,y 3 ), horizontal well horizontal section target point coordinates (x 1 ,y 1 ) and the bottom coordinate (x 2 ,y 2 ), the focal length c of the horizontal well control ellipse and the half length d of the horizontal section of the horizontal well are used to calculate the coordinates of the two focal points of the horizontal well control ellipse. 1 (x 4 ,y 4 ), F 2 (x 5 ,y 5 ), the calculation formula is as follows;

[0078]

[0079]

[0080]

[0081]

[0082] like Figure 3 As shown, the specific process of calculating the control points in any direction on the horizontal well control ellipse curve based on the relevant parameters of the horizontal well control ellipse, that is, obtaining the control range curve data of the horizontal well control ellipse, is as follows:

[0083] A polar coordinate system is established with the center point of the horizontal well control ellipse as the origin of the coordinate system, the east direction as the positive direction of the X axis, the north direction as the positive direction of the Y axis, and the counterclockwise direction as the positive direction of the angle;

[0084] In the polar coordinate system, select any point A(θ, b), where θ is the angle between point A and the due east direction in the polar coordinate system, and b is the length of the minor semi-axis of the control ellipse; calculate the geodetic coordinates (x 6 ,y 6 ), the formula is as follows:

[0085] x 6 =x 3 +b·cosθ; (12)

[0086] y 6 =y 3 +b·sinθ; (13)

[0087] Calculate point A and the two foci F of the horizontal well control ellipse 1 , F 2 The sum of the distances A d , the calculation formula is as follows:

[0088]

[0089] Judgment A d The relationship between the horizontal well control point and the major axis 2a of the ellipse is used to obtain the control point on the horizontal well control elliptic curve.

[0090] When|A d When -2a|≤δ, δ is the precision error, then point A is considered to be a control point in the θ direction of the horizontal well control ellipse.

[0091] When|A d When -2a|>δ, take the new coordinates of point A as (θ, b+△r), and use formula 12 and formula 13 to calculate the new geodetic coordinates of point A (x6 ,y 6 ), and use formula 14 to calculate the new A d , and re-judge until |A is satisfied d -2a|≤δ, then point A is considered to be a control point in the θ direction of the horizontal well control ellipse, and finally the coordinates of point A (x 6 ,y 6 ) is defined as the coordinates of a control point of the horizontal well control ellipse; where △r is the cyclic iteration step increment of the preset A point coordinates.

[0092] Judgment A d After the relationship with the major axis 2a of the ellipse, the size of θ in the coordinates of point A (θ, b) is changed until a control point in any direction on the horizontal well ellipse control curve is found, that is, the control range curve data of the horizontal well control ellipse is obtained.

[0093] In this embodiment,

[0094] 1. Based on the target point coordinates (10001000, 4004000) and the end coordinates (10000577, 4003094) of the horizontal well H1, calculate the horizontal section length L = 1000m and the horizontal section half length d = 500m.

[0095] 2. Calculate the length of the semi-major axis of the ellipse according to the length of the horizontal section L: a = 1.2 × L / 2 = 600m;

[0096] 3. According to the well control area S = 300000m 2 (Control ellipse area) and ellipse semi-major axis a calculate the length of ellipse semi-minor axis b 159m;

[0097] 4. The focal length of the ellipse can be calculated based on the semi-major axis a and semi-minor axis b of the ellipse

[0098] 5. The coordinates of the center of the ellipse (10000789, 4003547) can be calculated from the coordinates of the target point of the horizontal well (10001000, 4004000) and the bottom coordinates of the well (10000577, 4003094);

[0099] 6. The coordinates of the two foci of the ellipse can be calculated from the coordinates of the center of the ellipse (10000789, 4003547), the coordinates of the target point of the horizontal section of the horizontal well (10001000, 4004000) and the coordinates of the bottom of the well (10000577, 4003094), the focal length c = 578.5m and the half length of the horizontal section d = 500m. 1 (10001033, 4004071), F 2 (10000544, 4003023);

[0100] 7. Calculate the ellipse control points:

[0101] (1) Select any point A (65°, 159) in polar coordinates and calculate the geodetic coordinates of point A (10000856, 4003691);

[0102] (2) Calculate point A and the two foci F of the ellipse 1 , F 2 The sum of the distances A d =1157m, the accuracy error is defined as δ=5m, and the judgment |A d -2a|=|1157-2×600|=43m>δ; Take △r=2m, calculate the new coordinates of point A as (65°, 161), and loop to calculate the geodetic coordinates of point A, A d After 220 cycles of calculation and judgment, until the coordinates of point A are (65°, 599), A d =1198m, judgment |A d -2a|=|1198-2×600|=2m<δ, then point A is considered to be a control point of the ellipse in the 65° direction, and the geodetic coordinates of point A at this time are (10001042,4004090) as the coordinates of a control point of the ellipse;

[0103] (3) Change the size of θ in the coordinates of point A(θ, 159), and repeat steps (1) to (2) to find a total of 34 control points and draw a control range curve for the horizontal well.

[0104] (4) Load the curve data in GeoMap or Petrel and other related software to display the elliptical shape of the well control range, such as Figure 4 shown.

[0105] like Figure 5 As shown, a system for drawing a control range of a horizontal well in a tight gas reservoir comprises:

[0106] The ellipse parameter calculation module 11 is used to calculate the relevant parameters of the horizontal well control ellipse based on the target point coordinates and the bottom hole coordinates of the horizontal well in the geodetic coordinate system;

[0107] A curve data calculation module 12 is used to calculate the control points in any direction on the horizontal well control ellipse curve based on the relevant parameters of the horizontal well control ellipse, that is, to obtain the control range curve data of the horizontal well control ellipse;

[0108] The control range shape display module 13 is used to load the control range curve data using geological software to obtain the horizontal well control range shape.

[0109] The implementation process of the functions and effects of each module in the above system is specifically described in the implementation process of the corresponding steps in the above method, which will not be repeated here.

[0110] For the system embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The system embodiment described above is only schematic, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of the present invention. Those of ordinary skill in the art can understand and implement it without paying creative labor.

[0111] In the above-mentioned embodiment, any multiple of all modules can be combined in one module for implementation, or any one of the modules can be split into multiple modules. Alternatively, at least some functions of one or more of these modules can be combined with at least some functions of other modules and implemented in one module. At least one of all modules can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation modes of software, hardware and firmware or in a suitable combination of any of them. Alternatively, at least one of all modules can be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding function can be executed.

[0112] See also Figure 6 , an electronic device provided by an embodiment of the present disclosure includes a processor 1110, a communication interface 1120, a memory 1130 and a communication bus 1140, wherein the processor 1110, the communication interface 1120, and the memory 1130 communicate with each other through the communication bus 1140;

[0113] Memory 1130, for storing computer programs;

[0114] The processor 1110 is used to implement the following method for drawing the control range of a horizontal well in a tight gas reservoir when executing the program stored in the memory 1130.

[0115] The communication bus 1140 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 1140 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0116] The communication interface 1120 is used for communication between the above electronic device and other devices.

[0117] The memory 1130 may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory 1130 may also be at least one storage device located away from the processor 1110.

[0118] The above-mentioned processor 1110 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0119] The embodiment of the present disclosure further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for drawing a control range of a horizontal well in a tight gas reservoir as described above is implemented.

[0120] The computer-readable storage medium may be included in the device / apparatus described in the above embodiment; or it may exist independently without being assembled into the device / apparatus. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method for drawing the control range of horizontal wells in tight gas reservoirs according to the embodiment of the present disclosure is implemented.

[0121] According to an embodiment of the present disclosure, a computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0122] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for drawing the control range of a horizontal well in a tight gas reservoir, characterized in that: The following steps are involved: Based on the target point coordinates, bottom hole coordinates and the area of ​​the horizontal well control ellipse in the geodetic coordinate system, the relevant parameters of the horizontal well control ellipse are calculated; Based on the relevant parameters of the horizontal well control ellipse, a control point in any direction on the horizontal well control ellipse curve is calculated, that is, control range curve data of the horizontal well control ellipse is obtained; The control range curve data is loaded using geological software to obtain the horizontal well control range shape.

2. A method for drawing a control range of a horizontal well in a tight gas reservoir according to claim 1, characterized in that: The parameters related to the horizontal well control ellipse include the length L of the horizontal section of the horizontal well, the half length d of the horizontal section of the horizontal well, the length 2a of the major axis of the horizontal well control ellipse, the length a of the semi-major axis of the horizontal well control ellipse, the area S of the horizontal well control ellipse, the length b of the semi-minor axis of the horizontal well control ellipse, the focal length c of the horizontal well control ellipse, the coordinates of the center point of the horizontal well control ellipse (x3, y3), and the coordinates of the two foci of the horizontal well control ellipse F1 (x4, y4) and F2 (x5, y5).

3. A method for drawing a control range of a horizontal well in a tight gas reservoir according to claim 2, characterized in that: The specific process of calculating the relevant parameters of the horizontal well control ellipse based on the target point coordinates, bottom hole coordinates and area of ​​the horizontal well control ellipse in the geodetic coordinate system is as follows: Set the target point coordinates and bottom coordinates of the horizontal well in the geodetic coordinate system to (x1, y1) and (x2, y2) respectively; The horizontal section length L and the half length d of the horizontal section of the horizontal well are calculated by the target point coordinates (x1, y1) and the bottom coordinates (x2, y2) of the horizontal well. The calculation formula is as follows: d=L / 2 ; (2) The major axis length 2a of the horizontal well control ellipse is calculated based on the horizontal section length L. The calculation formula is as follows: 2a=1.2×L ; (3) where a represents the length of the semi-major axis of the horizontal well control ellipse; The semi-minor axis length b of the horizontal well control ellipse is calculated according to the area S of the horizontal well control ellipse and the semi-major axis length a of the horizontal well control ellipse. The calculation formula is as follows 4; b=S / a / π ; (4) The focal length c of the horizontal well control ellipse is calculated according to the semi-major axis length a of the horizontal well control ellipse and the semi-minor axis length b of the horizontal well control ellipse. The calculation formula is as follows: The coordinates of the center point (x3, y3) of the horizontal well control ellipse are calculated from the target point coordinates (x1, y1) and the bottom hole coordinates (x2, y2) of the horizontal well. The calculation formula is as follows: The coordinates of the two focal points of the horizontal well control ellipse are calculated as F1 (x4, y4) and F2 (x5, y5) respectively from the center coordinates of the horizontal well control ellipse (x3, y3), the target point coordinates of the horizontal section of the horizontal well (x1, y1), the bottom hole coordinates (x2, y2), the focal length c of the horizontal well control ellipse and the half length d of the horizontal section of the horizontal well. The calculation formula is as follows:

4. A method for drawing a control range of a horizontal well in a tight gas reservoir according to claim 3, characterized in that: The specific process of calculating and obtaining the control points in any direction on the horizontal well control ellipse curve based on the relevant parameters of the horizontal well control ellipse, that is, obtaining the control range curve data of the horizontal well control ellipse, is as follows: A polar coordinate system is established with the center point of the horizontal well control ellipse as the origin of the coordinate system, the east direction as the positive direction of the X axis, the north direction as the positive direction of the Y axis, and the counterclockwise direction as the positive direction of the angle; In the polar coordinate system, select any point A(θ, b), where θ is the angle between point A and the due east direction in the polar coordinate system, and b is the length of the minor semi-axis of the control ellipse; calculate the geodetic coordinates (x6, y6) of point A, and the formula is as follows: x6=x3+b·cosθ; (12) y6=y3+b·sinθ; (13) Calculate the sum of the distances A between point A and the two foci F1 and F2 of the horizontal well control ellipse d , the calculation formula is as follows: Judgment A d The relationship with the major axis 2a of the ellipse is that when |A d When -2a|≤δ, δ is the precision error, then point A is considered to be a control point in the θ direction of the horizontal well control ellipse; When|A d When -2a|>δ, take the new coordinates of point A as (θ, b+△r), and use formula 12 and formula 13 to calculate the new geodetic coordinates of point A (x6, y6), and use formula 14 to calculate the new A d , and re-judge until |A is satisfied d -2a|≤δ, then point A is considered to be a control point in the θ direction of the horizontal well control ellipse, and finally the coordinates of point A (x6, y6) are defined as the coordinates of a control point of the horizontal well control ellipse; wherein △r is the preset cyclic iteration step increment of the coordinates of point A; Judgment A d After the relationship with the major axis 2a of the ellipse, the size of θ in the coordinates of point A (θ, b) is changed until a control point in any direction on the horizontal well ellipse control curve is found, that is, the control range curve data of the horizontal well control ellipse is obtained.

5. A system for drawing the control range of horizontal wells in tight gas reservoirs, characterized in that: include: The ellipse parameter calculation module is used to calculate the relevant parameters of the horizontal well control ellipse based on the target point coordinates and the bottom hole coordinates of the horizontal well in the geodetic coordinate system; A curve data calculation module, used to calculate the control points in any direction on the horizontal well control ellipse curve based on the relevant parameters of the horizontal well control ellipse, that is, to obtain the control range curve data of the horizontal well control ellipse; The control range morphology display module is used to load the control range curve data using geological software to obtain the horizontal well control range morphology.

6. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory, for storing computer programs; The processor is used to implement the method for drawing the control range of horizontal wells in tight gas reservoirs according to any one of claims 1 to 4 when executing the program stored in the memory.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for drawing the control range of horizontal wells in tight gas reservoirs according to any one of claims 1 to 4 is implemented.

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