Method and apparatus for deploying a bundled oil and gas horizontal well cluster and an oil and gas horizontal well cluster

Abstract

The application discloses a kind of deployment method and device of bundled oil and gas horizontal well group and oil and gas horizontal well group.The method comprises the following steps: obtaining the well number, wellhead spacing and horizontal well section spacing of target bundled oil and gas horizontal well's production well, process well and auxiliary well;Determine the maximum size of available well site, and the well site area size required for rig operation;According to the requirements of drilling magnetic ranging positioning operation of the bundled oil and gas horizontal well group, determine the minimum wellhead row spacing;Determine the safety distance between production well and process well;According to the well number, wellhead spacing of the production well, process well and auxiliary well, the maximum size of available well site, the well site area size required for rig operation, the safety distance between the production well and process well, and the preset well site combination deployment rule, determine the combination form of the corresponding well site of the bundled oil and gas horizontal well group.The application provides a solution for wellhead deployment that meets the characteristics of the bundled oil and gas horizontal well group.

Description

Technical Field

[0001] This invention relates to the field of oil and gas geological drilling technology, and in particular to a method and apparatus for deploying bundled oil and gas horizontal well groups and oil and gas horizontal well groups. Background Technology

[0002] Bundled horizontal well groups refer to groups of horizontal wells drilled along the strike of a target formation in an underground geological segment for specific oil and gas extraction purposes. These groups typically have the following characteristics: ① They include process wells requiring special technologies (such as electric heaters, high-temperature fluid heating, electromagnetic radiation heating, or media combustion heating) and oil and gas production wells; ② The group contains a large number of wells, generally more than 5, and usually more than 10, with the horizontal well sections distributed across multiple different planes; ③ The spacing between the horizontal well sections is small, and the spatial requirements between them are strict. Due to the large number of wells, the small spacing between the horizontal well sections, and the specific oil and gas development methods, there are certain special requirements for the wellhead deployment of these horizontal well groups. Existing cluster platform well deployment methods are primarily applicable to conventional oil and gas development. In these clusters, the spacing between wellheads is typically small (generally between 5 and 20 meters, and possibly less than 2 meters below the wellhead in clusters under artificial islands), while the trajectories in the lower well sections are largely divergent. This reduces the risk of trajectory collisions during drilling operations, and because there are no special requirements for downhole operations, the wellhead deployment requirements are relatively low. Therefore, considering the characteristics of bundled horizontal oil and gas well groups, existing cluster platform well deployment methods are not suitable for the wellhead deployment requirements of bundled horizontal oil and gas well groups. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a method and apparatus for deploying a bundled horizontal oil and gas well group, and an oil and gas horizontal well group, which overcomes or at least partially solves the above problems.

[0004] In a first aspect, embodiments of the present invention provide a method for deploying bundled horizontal oil and gas well groups, including:

[0005] Obtain the number of production wells, process wells, and auxiliary wells, wellhead spacing, and horizontal section spacing of the target bundled oil and gas horizontal wells;

[0006] Determine the maximum available well site size and the area of ​​the well site required for drilling operations;

[0007] Based on the drilling magnetic ranging and positioning requirements of the bundled oil and gas horizontal well group, determine the minimum wellhead spacing.

[0008] Determine the safe distance between production wells and process wells;

[0009] Based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined.

[0010] In one embodiment, determining the maximum available well site size includes:

[0011] Based on the underground targets of the target-bundled horizontal oil and gas well group and the drilling trajectory control requirements, determine the reasonable horizontal distance L between the center of the well site and the drilling target. b ;

[0012] Based on the reasonable horizontal distance L between the well site center and the drilling target, b Determine the lengths of the long side a and the short side b corresponding to the maximum size that can be obtained.

[0013] In one embodiment, determining the size of the well site required for drilling operations includes:

[0014] Determine the type of drilling rig required for drilling;

[0015] Based on the required drilling rig model, the minimum well site length 'a' required for the drilling rig to complete the drilling operation can be determined. rig Minimum width b rig .

[0016] In one embodiment, determining the safe spacing between production wells and process wells includes:

[0017] Acquire the drilling magnetic ranging and positioning operation method for bundled horizontal oil and gas well groups;

[0018] If magnetic ranging positioning technology, which does not require instruments to be installed in the already drilled wellbore, is used, the minimum wellhead spacing L can be determined. r The value is L r1 ;

[0019] If magnetic ranging positioning technology, which requires instruments to be installed in the drilled wellbore, is used, the minimum wellhead spacing L should be determined. r The value is L r2 ;

[0020] When using a workover rig to connect the instrument to the tubing and run it into the drilled wellbore, determine the minimum wellhead spacing L. r The value is L r3 .

[0021] In one embodiment, the L r1 The value range of L is [10-30]m; r2The range of values ​​for is [b rig / 3,4b rig / 5];

[0022] The L r3 The range of values ​​for is [b rig / 2,b rig ].

[0023] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0024] If the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, allow for the acquisition of the maximum well site size, the area required for drilling operations, and the safe distance between the production wells and process wells, and meet one of the following preset conditions, then a single-well-site single-row well deployment scheme or a dual-well-site well deployment scheme will be adopted. In the single-well-site single-row well deployment scheme, all process wells, auxiliary wells, and production wells are deployed in the same row of wellheads, wherein the distance between a production well and its process well or auxiliary well is the safe distance L. p In the aforementioned dual-wellfield deployment scheme, process wells, auxiliary wells, and production wells are deployed in two different wellfields.

[0025] The first condition is:

[0026] L p +b rig >b≥b rig

[0027] (N s +N p +N F -2)L w +L p +a rig ≤a;

[0028] N S It is the number of process wells, N p It is the number of producing wells, N F It is the number of auxiliary wells, L w It is the distance between wellheads;

[0029] a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively.

[0030] a and b are the lengths of the long and short sides corresponding to the maximum dimensions of the well site, respectively.

[0031] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0032] If the number of production wells, process wells, and auxiliary wells, the wellhead spacing, and the required well site area for drilling operations, along with the safety distance between the production wells and process wells, satisfy the following preset condition three, then a single-well-site double-row well deployment scheme is adopted. In this scheme, all process wells, auxiliary wells, and production wells are deployed in the same row of wellheads, and the distance between the two rows of wellheads is the safety distance L. p ;

[0033] The third condition is:

[0034] L p +b rig ≤b≤L p +L r +b rig

[0035] (N s +N F -1)L w +a rig ≤a

[0036] L r Minimum wellhead spacing; N S It is the number of process wells, N F It is the number of auxiliary wells, a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively.

[0037] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0038] If the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, allow for the determination of the maximum well site size, the area required for drilling operations, and the safe distance between the production wells and process wells, and meet the following preset condition four, then a single-well-site double-row well deployment scheme is adopted. In this scheme, process wells and auxiliary wells are deployed on one side of the two rows of wellheads, and production wells are deployed on the other side. The spacing between the two rows of wellheads is the minimum wellhead row spacing L. rThe minimum distance between production wells and process wells or auxiliary wells is the safety distance L. p ;

[0039] Condition four is:

[0040] L r +b rig ≤b≤L p +L r +b rig

[0041] L P +b rig ≤b

[0042] (N sFP4 '-2)L w +L p +a rig ≤a

[0043] Where: When N S +N F +N P When the value of N is odd, sFP4 '=(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP4 '=(N S +N F +N P ) / 2;

[0044] N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells;

[0045] a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively.

[0046] a and b are the lengths of the long and short sides corresponding to the maximum dimensions of the well site, respectively.

[0047] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0048] If the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, allow for the determination of the maximum well site size, the area required for drilling operations, and the safe distance between the production wells and process wells, and meet the following preset condition six, then a single-well-site three-row well deployment scheme is adopted. In this scheme, process wells and auxiliary wells are deployed in two rows of wellheads, and production wells are deployed in the other row. The spacing between the wellheads of the two rows of process wells and auxiliary wells is the minimum wellhead row spacing L. r The spacing between production wells and process wells or auxiliary wells is the safety distance L. p ;

[0049] Condition six is:

[0050] L p +L r +b rig ≤b≤L p +2L r +b rig

[0051] (N sFP6 '-1)L w +a rig ≤a

[0052] N sFP6 '≥N P

[0053] Where: When N S +N F When the value of N is odd, sFP6 '=(N S +N F +1) / 2; when N S +N F When the value of N is even, sFP6 '=(N S +N F ) / 2;

[0054] N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells;

[0055] a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively.

[0056] a and b are the lengths of the long and short sides corresponding to the maximum dimensions of the well site, respectively.

[0057] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0058] If the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, allow for the determination of the maximum well site size, the area required for drilling operations, and the safe distance between the production wells and process wells, and meet the following preset condition seven, then a single-well-site three-row well deployment scheme or a dual-well-site well deployment scheme can be adopted. In the single-well-site three-row well deployment scheme, the process wells and auxiliary wells are deployed on one side of the three rows of wellheads, and the production wells are deployed on the other side of the three rows of wellheads. The spacing between the three rows of wellheads is the minimum wellhead row spacing L. r Or the aforementioned safety distance L p The minimum distance between production wells and process wells or auxiliary wells is the safety distance L. p In the aforementioned dual-wellfield deployment scheme, process wells, auxiliary wells, and production wells are deployed in two different wellfields.

[0059] The seventh condition is:

[0060] 2L r +b rig ≤b≤L p +2L r +b rig

[0061] L p +L r +b rig ≤b≤L p +2L r +b rig

[0062] (N sFP '-3)L w +L p +a rig ≤a

[0063] In the formula: when (N) S +N F +N P When ) / 3 is an integer, N sFP7 '=(N S +N F +N P +1) / 3; when (N S +N F +N P When N / 3 is not an integer, sFP7 '=[(N S+N F +N P ) / 3]+1.

[0064] N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells;

[0065] a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively.

[0066] a and b are the lengths of the long and short sides corresponding to the maximum dimensions of the well site, respectively.

[0067] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0068] If the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, and the safe distance between the production wells and process wells meet the following preset conditions two or five, then a dual-well site deployment scheme is adopted. In the dual-well site deployment scheme, the process wells, auxiliary wells, and production wells are deployed in two different well sites respectively.

[0069] The second condition is:

[0070] L p +b rig >b≥b rig

[0071] (N s +N p +N F -2)L w +L p '+a rig >a

[0072] In the formula: (N) S +N F )*L w rig / 2 And when choosing to use magnetic ranging and positioning technology that requires instruments to be installed in the drilled wellbore, L p 'For L r Otherwise L p 'For L p ;

[0073] The fifth condition is:​

[0074] L r +b rig ≤b≤L p +L r +b rig

[0075] (N sFP5 '-2)L w +L p +a rig ≥a

[0076] Where: When N S +N F +N P When the value of N is odd, sFP5 '=(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP5 '=(N S +N F +N P ) / 2;

[0077] N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells;

[0078] a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively.

[0079] a and b are the lengths of the long and short sides corresponding to the maximum dimensions of the well site, respectively.

[0080] In one embodiment, based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including:

[0081] If the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, and the safe distance between the production wells and process wells meet the following preset condition eight, then a dual-well site deployment scheme is adopted, in which the process wells, auxiliary wells, and production wells are deployed in two different well sites respectively.

[0082] Condition 8 refers to the situation where any one of conditions 1 to 7 is not met.

[0083] In one embodiment, the dual-wellfield well location deployment scheme can be determined in the following way:

[0084] The process wells, auxiliary wells, and production wells are deployed in two different well sites. In each well site, based on the number of production wells, process wells, and auxiliary wells and the wellhead spacing, the maximum size of the well site, the area of ​​the well site required for drilling operations, and the safe distance between the production wells and process wells are determined to meet conditions one, three, four, six, or seven.

[0085] If satisfied, the combination form of each well site shall be determined according to the well site combination deployment rules corresponding to the conditions one, three, four, six or seven that are met.

[0086] If any one of conditions one, three, four, six, and seven cannot be satisfied, the number of production wells, process wells, and auxiliary wells in each of the two well sites shall be re-divided until the number of production wells, process wells, and auxiliary wells in each well site, the wellhead spacing, and the maximum size of the well site, the area of ​​the well site required for drilling operations, and the safe distance between the production wells and process wells can satisfy conditions one, three, four, six, or seven. The combination form of each well site shall be determined according to the well site combination deployment rules corresponding to the conditions one, three, four, six, or seven that are met.

[0087] In one embodiment, the safe distance is greater than 15m.

[0088] Secondly, embodiments of the present invention provide a bundled oil and gas horizontal well group deployment device, comprising:

[0089] The acquisition module is used to acquire the number of production wells, process wells, and auxiliary wells, the wellhead spacing, and the horizontal well section spacing of the target bundled oil and gas horizontal well.

[0090] The determination module is used to determine the maximum available well site size and the well site area required for drilling operations; to determine the minimum wellhead spacing based on the requirements of the magnetic ranging and positioning operation of the bundled oil and gas horizontal well group; and to determine the safe distance between production wells and process wells.

[0091] The deployment form determination module is used to determine the combination form of the well site corresponding to the bundled oil and gas horizontal well group based on the number of production wells, process wells and auxiliary wells, the wellhead spacing, the maximum size of the well site, the area of ​​the well site required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules.

[0092] Thirdly, embodiments of the present invention provide an oil and gas horizontal well group, characterized in that the bundled oil and gas horizontal well group is deployed according to the aforementioned bundled oil and gas horizontal well group deployment method, and is distributed in the same well site or two different well sites.

[0093] The beneficial effects of the above-described technical solutions provided in the embodiments of the present invention include at least the following:

[0094] The deployment method and device for the above-mentioned bundled oil and gas horizontal well groups provided in this invention, along with the wellhead spacing and horizontal well section spacing, can obtain the maximum well site size, the well site area required for drilling operations, the minimum wellhead row spacing, the safe distance between production wells and process wells, and preset well site combination deployment rules, to determine the combination form of the well site corresponding to the bundled oil and gas horizontal well group. This invention comprehensively considers the number of production wells, process wells, and auxiliary wells of the target bundled oil and gas horizontal well, as well as the requirements of surface conditions, horizontal well group drilling technology, and special technologies of the horizontal well group, to deploy the optimal wellhead spacing and wellhead row to fully meet the deployment requirements of the bundled oil and gas horizontal well group, and solves the problem that the existing cluster wellhead deployment process cannot fully consider the special operation mode of the bundled oil and gas horizontal well group.

[0095] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0096] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0097] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0098] Figure 1 This is a flowchart of the bundled horizontal oil and gas well group deployment method in an embodiment of the present invention;

[0099] Figure 2 This is a schematic diagram of different orbital plane types in the strata according to embodiments of the present invention;

[0100] Figure 3 In this embodiment of the invention, a reasonable horizontal distance L from the well site center to the drilling target can be obtained. b A schematic diagram;

[0101] Figures 4-8This is a schematic diagram of the well location deployment scheme for each single well site in an embodiment of the present invention;

[0102] Figure 9 This is a schematic diagram showing the relative positions of the two well sites in the dual-well site deployment scheme of this invention.

[0103] Figure 10 This is a schematic diagram of the structure of the bundled oil and gas horizontal well group deployment device in an embodiment of the present invention. Detailed Implementation

[0104] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0105] The inventors of this invention have discovered that with the rapid development of the oil and gas industry and the continuous increase in demand for oil and gas resources, oil and gas exploration and development has shifted from external source oil and gas resources outside the source rock to internal source oil and gas resources inside the source rock. Due to the immaturity, ultra-low porosity and permeability, and difficulty in exploitation of internal source oil and gas resources, special process technologies are required for exploration and development. For example, through in-situ electric heating, unconverted organic matter and generated hydrocarbons in medium- and low-maturity internal source oil and gas resources can be converted into light oil and natural gas for development.

[0106] This technology requires the deployment of bundled horizontal well groups, which involve placing numerous closely spaced, equidistant heating sources within the source rock. This uniform heating of the formation accelerates the conversion of organic matter and hydrocarbons into natural gas and light oil. Bundled horizontal well groups are the key technological foundation for realizing this process. If existing cluster well deployment methods are used to design the spatial location of bundled horizontal well groups, it cannot meet the specific small-spacing drilling requirements of the downhole horizontal sections, nor can it meet the requirements of specialized oil and gas extraction processes.

[0107] Based on the aforementioned challenges in deploying bundled horizontal oil and gas well groups, and referring to Figure 1 As shown, this embodiment of the invention provides a method for deploying bundled horizontal oil and gas well groups, which includes the following steps:

[0108] S11. Obtain the number of production wells, process wells, and auxiliary wells, wellhead spacing, and horizontal well section spacing of the target bundled oil and gas horizontal well;

[0109] S12. Determine the maximum available well site size and the well site area required for drilling operations;

[0110] S13. Determine the minimum wellhead spacing according to the drilling magnetic ranging and positioning operation requirements of the bundled oil and gas horizontal well group;

[0111] S14. Determine the safe distance between production wells and process wells;

[0112] S15. Based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined.

[0113] The following sections will provide a detailed explanation of each of the above steps.

[0114] In step S11 above, the number N of process wells in the bundled horizontal oil and gas well group is obtained. S Number of production wells N p Number of auxiliary wells N F Wellhead spacing L w Horizontal well section spacing L H .

[0115] Special process wells (hereinafter referred to as process wells) are process wells implemented to achieve oil and gas extraction. These special processes include, but are not limited to, heating by electric heaters, high-temperature fluid heating, electromagnetic radiation heating, and medium combustion heating.

[0116] The horizontal sections of process wells are typically distributed across different planes, with each plane containing a portion of the horizontal wellbore trajectory. Generally, these planes are horizontal or nearly horizontal; however, in some cases, they may be parallel to the formation strike but with a certain angle of inclination, such as... Figure 2 As shown. The number of layers in the process well pattern is determined by the geological reservoir scheme and ranges from 3 to 8, usually 3 or 4.

[0117] A production well is a well that recovers liquids containing an oil and gas mixture from the formation. A group of horizontal wells must have at least one production well, but the total number of wells N p Fewer than the number of process wells N S ;

[0118] Auxiliary wells are wells drilled to ensure the normal construction, production and management of bundled horizontal oil and gas well groups. For example, control wells are used to ensure the successful drilling of the target reservoir, measurement wells are used to measure reservoir physical parameters, and observation wells or monitoring wells are used to observe reservoir production dynamics.

[0119] The above-mentioned wellhead spacing refers to the distance between adjacent wellheads in the same row of wells on the ground, which is generally between 5 and 20m.

[0120] The aforementioned horizontal well spacing refers to the distance between two adjacent horizontal wells in the target formation for underground oil and gas extraction. It is generally within 20m, usually less than 10m, and sometimes even less than 2m.

[0121] In step S12 above, the maximum size of the existing available well site can be obtained in the following way:

[0122] Available well sites refer to a specific piece of land selected by oil surface engineers based on the underground target of the target bundled oil and gas horizontal well group, considering drilling trajectory control requirements, surface conditions, surface environment, and land rights, which is suitable for completing the drilling operation of the bundled oil and gas horizontal well group.

[0123] The above-mentioned drilling trajectory control requirements based on the underground targets of the target-bundled horizontal oil and gas well group include, but are not limited to: the direction, burial depth, control accuracy of the underground targets of the target-bundled horizontal oil and gas well group, and the reasonable horizontal distance L between the center of the obtainable well site and the drilling target that must be guaranteed to achieve accurate drilling. b .

[0124] L b The size can be determined in the following two ways: ①L b It should be selected between 150 and 800m; ②L b It can be calculated according to the first calculation formula.

[0125] L b A diagram illustrating the size can be found here. Figure 3 As shown.

[0126] Surface conditions include the topography, shallow geology, surface vegetation, and transportation conditions of the candidate sites. For example, the size that can be achieved after leveling and filling in mountainous conditions; the size of the available well site that may be limited by the instability of shallow foundations; the size of the available well site that may be limited by the inability to destroy the vegetation in some parts of nature reserves; and the size of the available well site that may be limited by factors such as ground buildings, transportation, communication, and power.

[0127] Land rights mainly refer to the land use rights and the size of the available well sites restricted by all rights.

[0128] The first calculation formula mentioned above is: L b =1719.75 / R, where R is the range of wellbore trajectory build-up rate relative to the designed horizontal well group, typically between (3~12)° / 30m. R can be obtained based on the overall design of the bundled horizontal well group and the build-up capability of existing wellbore trajectory control tools. L b The unit is meters.

[0129] Based on the reasonable horizontal distance L between the well site center and the drilling target, bDetermine the lengths of the long side a and the short side b corresponding to the maximum size that can be obtained.

[0130] The available well site is usually rectangular, with the longest side designated as 'a' and the shortest side as 'b'. The available well site can also be irregular in shape, with the maximum length dimension of the available well site area designated as 'a' and the maximum dimension of the perpendicular side of the corresponding maximum length line designated as 'b'.

[0131] When the available well site is irregularly shaped, the selection of a and b should not affect the equipment layout for subsequent drilling operations. Otherwise, the length line of a should be rotated by a certain angle to reselect the period value until the equipment layout for subsequent drilling operations is satisfied.

[0132] In one embodiment, the size of the well site area required for drilling operations in step S12 above can be determined in the following manner:

[0133] The drilling rig model required for drilling can be obtained by selecting it according to the method provided in the petroleum industry standard SY / T 5609 ("Types and Basic Parameters of Petroleum Drilling Rigs"). The above method is existing technology and will not be elaborated here.

[0134] Based on the required drilling rig model, the size of the well site required to complete the drilling operation can be determined, including two parameters: the minimum length requirement of the well site, and the area required for drilling operations. rig Minimum width requirement b rig .

[0135] In one embodiment, in step S13 above, the minimum wellhead spacing is determined according to the drilling magnetic ranging and positioning requirements of the bundled oil and gas horizontal well group. In specific implementation, this can be achieved in the following way:

[0136] Magnetic positioning refers to a special drilling technique implemented to achieve drilling operations with small well spacing in bundled horizontal oil and gas well groups. Based on the current status of the technology, it is divided into two types: one is magnetic ranging and positioning technology that does not require the instrument to be installed in the wellbore of the already drilled process well during drilling magnetic ranging and positioning operations, and the other is magnetic ranging and positioning technology that requires the instrument to be installed in the wellbore of the already drilled process well during drilling magnetic ranging and positioning operations.

[0137] The aforementioned magnetic ranging and positioning technology, which requires the insertion of special instruments into the drilled wellbore, generally requires the use of a coiled tubing workover rig to lower the instruments into the drilled wellbore, or a workover rig to connect the instruments to the tubing and lower them into the drilled wellbore. Different operating methods have different requirements for the well site area and the minimum wellhead spacing.

[0138] To obtain the drilling magnetic ranging and positioning operation method for bundled horizontal oil and gas well groups, such as adopting magnetic ranging and positioning technology that does not require running instruments into the already drilled wellbore, the minimum wellhead spacing L is required. r The value is Lr1 If magnetic ranging positioning technology, which requires instruments to be installed in the drilled wellbore, is used, and a coiled tubing workover rig is used to run the special instruments into the drilled wellbore, the minimum wellhead spacing L is... r The value is L r2 When using a workover rig to connect the instrument to the tubing and run it into the drilled wellbore, the minimum wellhead spacing L is... r The value is L r3 .

[0139] L r1 The spacing can be selected according to the conventional cluster well spacing method, generally between 10 and 30m;

[0140] L r2 The value is determined based on the safe distance between the coiled tubing installation machine and the drilling rig operating simultaneously, and it is generally distributed in [b rig / 3,4b rig Between / 5];

[0141] L r3 The value is determined based on the safe distance between the workover rig and the drilling rig operating simultaneously, and it is generally distributed in [b]. rig / 2,b rig ]between.

[0142] In one embodiment, in step S14 above, the safe distance L between the production well and the process well is determined in the following manner. p :

[0143] In the production of oil and gas from bundled horizontal well groups, the process well requires special technological measures, such as the introduction of high-voltage power, high temperature, or special media. These measures pose a certain risk of explosion to the oil and gas components in the production well. Furthermore, the produced oil and gas components contain corrosive elements, which also pose a risk of corrosion or contamination to the process well. Therefore, a certain safety distance L is required between the process well and the production well. p Its value is usually greater than 15m, and in most cases it is above 20m.

[0144] In one embodiment, the well site combination can be determined, for example, in the following manner in step S15:

[0145] Based on the number of process wells N S Number of production wells N p Number of auxiliary wells N F Wellhead spacing L w The maximum well site dimensions a and b can be obtained, and the well site area a required for the drilling rig model is... rig and b rig Safety spacing L between production wells and process wells pThe well site combination form can be determined by combining the following preset well site combination deployment rules:

[0146] When condition one is met, a single-wellfield, single-row well deployment scheme should be prioritized, meaning that process wells, auxiliary wells, and production wells are all deployed in the same row of wellheads, with the wellhead spacing between production wells and other wells being L. p Alternatively, a dual-wellsite deployment can be used; see the schematic diagram for details. Figure 4 .

[0147] When condition two is met, a dual-well site deployment scheme is adopted.

[0148] When condition three is met, a single-well-site, dual-row well deployment scheme should be prioritized. This means that all process wells and auxiliary wells are deployed in one row of wellheads, while production wells are deployed in another row. The distance between the two rows of wellheads is L. p This also checks whether condition four is met. If it is, the well location deployment plan corresponding to condition four can be selected. See the diagram for a specific deployment plan. Figure 5 .

[0149] When condition four is met, a single-well-site, double-row well deployment scheme is adopted, that is, process wells and auxiliary wells are deployed on one side of the two rows of wellheads, and production wells are deployed on the other side, with a spacing of L between the two rows of wellheads. r The minimum distance between production wells and process or auxiliary wells is L. p This also checks whether condition three is met. If it is, the well location deployment plan corresponding to condition three can be selected. See the diagram for a specific deployment plan. Figure 6 .

[0150] When condition five is met, a dual-wellsite well location deployment scheme must be adopted, in which process wells, auxiliary wells, and production wells are deployed in two different wellsites.

[0151] When condition six is ​​met, a single-wellfield, three-row well deployment scheme is adopted, that is, process wells and auxiliary wells are deployed in two rows of wellheads, and production wells are deployed in a separate row. The distance between the wellheads of the two rows of process wells and auxiliary wells is L. r The spacing between production wells and process wells or auxiliary wells is L. p For a detailed deployment diagram, please refer to [link / reference]. Figure 7 .

[0152] When condition seven is met, a single-well-site three-row well deployment scheme should be prioritized, i.e., process wells and auxiliary wells are deployed on one side of the three-row wellheads, and production wells are deployed on the other side of the three-row wellheads, with a spacing of L between the three rows of wellheads. r or L p The minimum distance between production wells and process or auxiliary wells is L. p Alternatively, a dual-well site deployment can be used directly. See the diagram for a specific deployment. Figure 8 .

[0153] When condition eight is met, the dual-well site deployment scheme shall be given priority.

[0154] Specifically, conditions one through eight are as follows:

[0155] Condition 1 is: (In this case, the width of the well site can only be laid out in one row, while the length can be laid out in one row.)

[0156] L p +b rig >b≥b rig

[0157] (N s +N p +N F -2)L w +L p +a rig ≤a

[0158] Condition 2 is: (In this case, the well site width can only be laid out in one row, and the length is insufficient for one row)

[0159] L p +b rig >b≥b eig

[0160] (N s +N p +N F -2)L w +L p '+a rig >a

[0161] In the formula: (N) S +N F )*L w rig / 2 And when choosing to use magnetic ranging and positioning technology that requires the insertion of special instruments into the already drilled wellbore, L p 'For L r Otherwise L p 'For L p .

[0162] Condition 3 is: (In this case, the well site width can accommodate two rows, and the length can accommodate one row of process wells and auxiliary wells)

[0163] L p +b rig ≤b≤L p +L r +b rig

[0164] (N s +N F -1)L w ​+a rig ≤a

[0165] Condition four is: (In this case, the width of the well site can accommodate two rows of wells, but the length can only accommodate two rows; one row is not enough.)

[0166] L r +b rig ≤b≤L p +L r +b rig

[0167] L P +b rig ≤b

[0168] (N sFP4 '-2)L w +L p +a rig ≤a

[0169] Where: When N S +N F +N P When the value of N is odd, sFP4 '=(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP4 '=(N S +N F +N P ) / 2.

[0170] Condition 5 is: (In this case, the width of the well site can accommodate two rows of wells, but the length cannot accommodate two rows.)

[0171] L r +b rig ≤b≤L p +L r +b rig

[0172] (N sFP5 '-2)L w +L p +a rig ≥a

[0173] In the formula: when the value of NS+NF+NP is odd, N sFP5 '=(N S +N F +N P +1) / 2; when N S +N F +N PWhen the value of N is even, sFP5 '=(N S +N F +N P ) / 2.

[0174] Condition six is: (In this case, the well site width can accommodate two rows of wells and one row of production wells, and the length can also accommodate them)

[0175] L p +L r +b rig ≤b≤L p +2L r +b rig

[0176] (N sFP6’ -1)L w +a rig ≤a

[0177] N sFP6’ ≥N P

[0178] In the formula: when the value of NS+NF is odd, N sFP6 '=(N S +N F +1) / 2; when N S +N F When the value of N is even, sFP6 '=(N S +N F ) / 2.

[0179] Condition seven is: (In this case, the well site width can accommodate three rows of wells, with production wells squeezed to one side, and the length can be arranged).

[0180] 2L r +b rig ≤b≤L p +2L r +b rig

[0181] L p +L r +b rig ≤b≤L p +2L r +b rig

[0182] (N sFP7 '-3)L w +L p +a rig ≤a

[0183] In the above formula: when (N) S +N F +NP When ) / 3 is an integer, N sFP7 '=(N S +N F +N P +1) / 3; when (N S +N F +N P When N / 3 is not an integer, sFP7 '=[(N S +N F +N P ) / 3]+1.

[0184] Condition eight:

[0185] All cases that do not satisfy conditions one through seven above are the complement of the set of conditions one through seven above.

[0186] In the formulas for conditions one through eight above, N S It is the number of process wells, N p It is the number of producing wells, N F It is the number of auxiliary wells, L w It is the distance between wellheads;

[0187] a rig and b rig These are the minimum length and minimum width of the rectangular well site required for the drilling rig to complete the drilling operation, respectively.

[0188] a and b are the lengths of the long and short sides corresponding to the maximum size of the rectangular well site, respectively;

[0189] a rig and b rig These are the minimum length and minimum width of the rectangular well site required for the drilling rig to complete the drilling operation, respectively.

[0190] L p The safe distance between production wells and process wells;

[0191] L r Minimum wellhead spacing;

[0192] The meanings of other parameters can be found in the foregoing explanation, and will not be repeated here.

[0193] In the case of the dual-wellfield scheme described above, the process wells, auxiliary wells, and production wells need to be deployed to two different wellfields, either evenly or unequally. Then, each wellfield is judged according to conditions one, three, four, six, and seven. If it is determined that the dual-wellfield scheme is still required, the number of process wells, auxiliary wells, and production wells is re-divided, and each wellfield is judged again according to conditions one, three, four, six, and seven. This process is repeated until the number of process wells, auxiliary wells, and production wells in both wellfields meets conditions one, three, four, six, and seven.

[0194] In a dual-well site deployment scheme, the two well sites can be arranged in parallel, facing each other, or in a front-to-back, oblique, or lateral arrangement. For details, please refer to [example missing]. Figure 9 As shown.

[0195] Based on the same inventive concept, embodiments of the present invention also provide a bundled oil and gas horizontal well group deployment device and an oil and gas horizontal well group.

[0196] The bundled oil and gas horizontal well group deployment device provided in this embodiment of the invention refers to... Figure 10 As shown, it includes:

[0197] The acquisition module 101 is used to acquire the number of production wells, process wells and auxiliary wells, wellhead spacing and horizontal well section spacing of the target bundled oil and gas horizontal well;

[0198] The determination module 102 is used to determine the maximum available well site size and the well site area required for drilling operations; to determine the minimum wellhead spacing according to the requirements of the magnetic ranging and positioning operation of the bundled oil and gas horizontal well group; and to determine the safe distance between production wells and process wells.

[0199] The deployment form determination module 103 is used to determine the combination form of the well site corresponding to the bundled oil and gas horizontal well group based on the number of production wells, process wells and auxiliary wells, the wellhead spacing, the maximum size of the well site that can be obtained, the size of the well site area required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules.

[0200] The present invention provides an oil and gas horizontal well group, wherein the bundled oil and gas horizontal well group is deployed according to the aforementioned bundled oil and gas horizontal well group deployment method, and is distributed in the same well site or two different well sites.

[0201] The deployment method and device for the above-mentioned bundled oil and gas horizontal well groups provided in this invention, along with the wellhead spacing and horizontal well section spacing, can obtain the maximum well site size, the well site area required for drilling operations, the minimum wellhead row spacing, the safe distance between production wells and process wells, and preset well site combination deployment rules, to determine the combination form of the well site corresponding to the bundled oil and gas horizontal well group. This invention comprehensively considers the number of production wells, process wells, and auxiliary wells of the target bundled oil and gas horizontal well, as well as the requirements of surface conditions, horizontal well group drilling technology, and special technologies of the horizontal well group, to deploy the optimal wellhead spacing and wellhead row to fully meet the deployment requirements of the bundled oil and gas horizontal well group, and solves the problem that the existing cluster wellhead deployment process cannot fully consider the special operation mode of the bundled oil and gas horizontal well group.

[0202] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for deploying bundled horizontal oil and gas well groups, characterized in that, include: Obtain the number of production wells, process wells, and auxiliary wells, wellhead spacing, and horizontal section spacing of the target bundled oil and gas horizontal wells; Determine the maximum available well site size and the area of ​​the well site required for drilling operations; Based on the drilling magnetic ranging and positioning requirements of the bundled oil and gas horizontal well group, determine the minimum wellhead spacing. Determine the safe distance between production wells and process wells; Based on the number of production wells, process wells, and auxiliary wells, the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined. Based on the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including: If the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, can be used to determine the maximum well site size and the area required for drilling operations, and the safety distance between the production wells and process wells satisfies the following: If the first preset condition is met, a single-well-site, single-row well deployment scheme or a dual-well-site well deployment scheme is adopted. In the single-well-site, single-row well deployment scheme, process wells, auxiliary wells, and production wells are all deployed in the same row of wellheads, wherein the distance between a production well and its process well, or between a production well and its auxiliary well, is the safety distance L. p In the dual-wellfield deployment scheme, the process well, auxiliary well, and production well are deployed in two different wellfields; condition one is: ； ； It is the number of process wells, N p It is the number of producing wells, N F It is the number of auxiliary wells, L w It is the wellhead spacing; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition three involves a single-well-site, double-row well deployment scheme. In this scheme, process wells, auxiliary wells, and production wells are all deployed in the same row of wellheads, with the distance between the two rows of wellheads being the safety distance L. p The third condition is: ； ； L r Minimum wellhead spacing; N S It is the number of process wells, N F It is the number of auxiliary wells, a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively. Preset condition four: A single-well-site, double-row well deployment scheme is adopted. In this scheme, process wells and auxiliary wells are deployed on one side of the two rows of wellheads, and production wells are deployed on the other side. The distance between the two rows of wellheads is the minimum wellhead row spacing L. r The minimum distance between production wells and process wells, or between production wells and auxiliary wells, is the safety distance L. p Condition four is: ； ； ； Where: When N S +N F +N P When the value of N is odd, sFP4 ’ =(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP4 ’ =(N S +N F +N P ) / 2; N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition six: A single-well-site, three-row well deployment scheme is adopted. In this scheme, process wells and auxiliary wells are deployed in two rows of wellheads, and production wells are deployed in the other row. The distance between the wellheads of the two rows of process wells and auxiliary wells is the minimum wellhead row spacing L. r The spacing between production wells and process wells, or between production wells and auxiliary wells, is the safety distance L. p ; Condition six is: ； ； ； Where: When N S +N F When the value of N is odd, sFP6 ’ =(N S +N F +1) / 2; when N S +N F When the value of N is even, sFP6 ’ =(N S +N F ) / 2; N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition seven: A single-well-site three-row well deployment scheme or a dual-well-site well deployment scheme is adopted. In the single-well-site three-row well deployment scheme, process wells and auxiliary wells are deployed on one side of the three rows of wellheads, and production wells are deployed on the other side of the three rows of wellheads. The spacing between the three rows of wellheads is the minimum wellhead row spacing L. r Or the aforementioned safety distance L p The minimum distance between production wells and process wells, or between production wells and auxiliary wells, is the safety distance L. p In the aforementioned dual-wellfield deployment scheme, process wells, auxiliary wells, and production wells are deployed in two different wellfields. The seventh condition is: ; ； ； In the formula: when (N) S +N F +N P When N / 3 is an integer, sFP7 ’ =(N S +N F +N P +1) / 3; when (N S +N F +N P When N / 3 is not an integer, sFP7 ’ =[(N S +N F +N P ) / 3]+1;N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; If either condition two or condition five is preset, a dual-wellsite deployment scheme is adopted, in which the process well, auxiliary well, and production well are deployed in two different wellsites respectively; condition two is: ； ； In the formula: (N) S + N F )* L w rig / 2 And when choosing to use magnetic ranging and positioning technology that requires instruments to be installed in the drilled wellbore, L p ’ For L r Otherwise L p ’ For L p ;​ The fifth condition is: ； ； Where: When N S +N F +N P When the value of N is odd, sFP5 ’ =(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP5 ’ =(N S +N F +N P ) / 2; N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition eight is to adopt a dual-wellfield well location deployment scheme, in which process wells, auxiliary wells, and production wells are deployed in two different well fields respectively; condition eight is the case where any one of the above conditions one to seven is not met.

2. The method as described in claim 1, characterized in that, Determining the maximum available well site size includes: Based on the underground targets of the target-bundled horizontal oil and gas well group and the drilling trajectory control requirements, determine the reasonable horizontal distance L between the center of the well site and the drilling target. b ; Based on the reasonable horizontal distance L between the well site center and the drilling target, b Determine the lengths of the long side a and the short side b corresponding to the maximum size that can be obtained.

3. The method as described in claim 1, characterized in that, Determine the size of the well site required for drilling operations, including: Determine the type of drilling rig required for drilling; Based on the required drilling rig model, the minimum well site length 'a' required for the drilling rig to complete the drilling operation can be determined. rig Minimum width b rig .

4. The method as described in claim 3, characterized in that, Determine the safe spacing between production wells and process wells, including: Acquire the drilling magnetic ranging and positioning operation method for bundled horizontal oil and gas well groups; If magnetic ranging positioning technology, which does not require instruments to be installed in the already drilled wellbore, is used, the minimum wellhead spacing L can be determined. r The value is L r1 ; If magnetic ranging positioning technology, which requires instruments to be installed in the drilled wellbore, is used, the minimum wellhead spacing L should be determined. r The value is L r2 ; When using a workover rig to connect the instrument to the tubing and run it into the drilled wellbore, determine the minimum wellhead spacing L. r The value is L r3 .

5. The method as described in claim 4, characterized in that, The L r1 The value range of L is [10-30]m; r2 The range of values ​​for is [b rig / 3,4b rig / 5];The L r3 The range of values ​​for is [b rig / 2,b rig ].

6. The method as described in claim 1, characterized in that, The aforementioned dual-wellsite well location deployment scheme specifically includes: The process wells, auxiliary wells, and production wells are deployed in two different well sites. In each well site, based on the number of production wells, process wells, and auxiliary wells and the wellhead spacing, the maximum size of the well site, the area of ​​the well site required for drilling operations, and the safe distance between the production wells and process wells are determined to meet conditions one, three, four, six, or seven. If satisfied, the combination form of each well site shall be determined according to the well site combination deployment rules corresponding to the conditions one, three, four, six or seven that are met. If any one of conditions one, three, four, six, and seven cannot be satisfied, the number of production wells, process wells, and auxiliary wells in each of the two well sites shall be re-divided until the number of production wells, process wells, and auxiliary wells in each well site, the wellhead spacing, and the maximum size of the well site, the area of ​​the well site required for drilling operations, and the safe distance between the production wells and process wells can satisfy conditions one, three, four, six, or seven. The combination form of each well site shall be determined according to the well site combination deployment rules corresponding to the conditions one, three, four, six, or seven that are met.

7. The method according to any one of claims 1-6, characterized in that, The safe distance is greater than 15m.

8. A bundled horizontal well group deployment device, characterized in that, include: The acquisition module is used to acquire the number of production wells, process wells, and auxiliary wells, the wellhead spacing, and the horizontal well section spacing of the target bundled oil and gas horizontal well. The determination module is used to determine the maximum available well site size and the well site area required for drilling operations; and to determine the minimum wellhead spacing based on the requirements for drilling magnetic ranging and positioning operations of the bundled oil and gas horizontal well group. And determine the safe distance between production wells and process wells; The deployment form determination module is used to determine the combination form of the well site corresponding to the bundled oil and gas horizontal well group based on the number of production wells, process wells and auxiliary wells, the wellhead spacing, the maximum size of the well site, the area of ​​the well site required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules. Based on the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, the maximum well site size, the well site area required for drilling operations, the safe distance between the production wells and process wells, and the preset well site combination deployment rules, the combination form of the well site corresponding to the bundled oil and gas horizontal well group can be determined, including: If the number of production wells, process wells, and auxiliary wells, and the wellhead spacing, can be used to determine the maximum well site size and the area required for drilling operations, and the safety distance between the production wells and process wells satisfies the following: If the first preset condition is met, a single-well-site, single-row well deployment scheme or a dual-well-site well deployment scheme is adopted. In the single-well-site, single-row well deployment scheme, process wells, auxiliary wells, and production wells are all deployed in the same row of wellheads, wherein the distance between a production well and its process well, or between a production well and its auxiliary well, is the safety distance L. p In the dual-wellfield deployment scheme, the process well, auxiliary well, and production well are deployed in two different wellfields; condition one is: ； ； N S It is the number of process wells, N p It is the number of producing wells, N F It is the number of auxiliary wells, L w It is the wellhead spacing; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition three involves a single-well-site, double-row well deployment scheme. In this scheme, process wells, auxiliary wells, and production wells are all deployed in the same row of wellheads, with the distance between the two rows of wellheads being the safety distance L. p The third condition is: ； ； L r Minimum wellhead spacing; N S It is the number of process wells, N F It is the number of auxiliary wells, a rig and b rig These are the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation, respectively. Preset condition four: A single-well-site, double-row well deployment scheme is adopted. In this scheme, process wells and auxiliary wells are deployed on one side of the two rows of wellheads, and production wells are deployed on the other side. The distance between the two rows of wellheads is the minimum wellhead row spacing L. r The minimum distance between production wells and process wells, or between production wells and auxiliary wells, is the safety distance L. p Condition four is: ； ； ； Where: When N S +N F +N P When the value of N is odd, sFP4 ’ =(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP4 ’ =(N S +N F +N P ) / 2; N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition six: A single-well-site, three-row well deployment scheme is adopted. In this scheme, process wells and auxiliary wells are deployed in two rows of wellheads, and production wells are deployed in the other row. The distance between the wellheads of the two rows of process wells and auxiliary wells is the minimum wellhead row spacing L. r The spacing between production wells and process wells, or between production wells and auxiliary wells, is the safety distance L. p ; Condition six is: ； ； ； Where: When N S +N F When the value of N is odd, sFP6 ’ =(N S +N F +1) / 2; when N S +N F When the value of N is even, sFP6 ’ =(N S +N F ) / 2; N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition seven: A single-well-site three-row well deployment scheme or a dual-well-site well deployment scheme is adopted. In the single-well-site three-row well deployment scheme, process wells and auxiliary wells are deployed on one side of the three rows of wellheads, and production wells are deployed on the other side of the three rows of wellheads. The spacing between the three rows of wellheads is the minimum wellhead row spacing L. r Or the aforementioned safety distance L p The minimum distance between production wells and process wells, or between production wells and auxiliary wells, is the safety distance L. p In the aforementioned dual-wellfield deployment scheme, process wells, auxiliary wells, and production wells are deployed in two different wellfields. The seventh condition is: ; ； ； In the formula: when (N) S +N F +N P When N / 3 is an integer, sFP7 ’ =(N S +N F +N P +1) / 3; when (N S +N F +N P When N / 3 is not an integer, sFP7 ’ =[(N S +N F +N P ) / 3]+1;N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; If either condition two or condition five is preset, a dual-wellsite deployment scheme is adopted, in which the process well, auxiliary well, and production well are deployed in two different wellsites respectively; condition two is: ； ； In the formula: (N) S + N F )* L w rig / 2 And when choosing to use magnetic ranging and positioning technology that requires instruments to be installed in the drilled wellbore, L p ’ For L r Otherwise L p ’ For L p ;​ The fifth condition is: ； ； Where: When N S +N F +N P When the value of N is odd, sFP5 ’ =(N S +N F +N P +1) / 2; when N S +N F +N P When the value of N is even, sFP5 ’ =(N S +N F +N P ) / 2; N S It is the number of process wells, N p It is the number of producing wells, N F It refers to the number of auxiliary wells; a rig and b rig , respectively, represent the minimum length and minimum width of the well site required for the drilling rig to complete the drilling operation; a and b are the lengths of the long side and short side corresponding to the maximum size of the well site, respectively; Preset condition eight is to adopt a dual-wellfield well location deployment scheme, in which process wells, auxiliary wells, and production wells are deployed in two different well fields respectively; condition eight is the case where any one of the above conditions one to seven is not met.

9. A horizontal well group for oil and gas, characterized in that, The bundled horizontal oil and gas well group is deployed according to the bundled horizontal oil and gas well group deployment method as described in any one of claims 1-7, and is distributed in the same well site or two different well sites.

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