Oil and gas well construction control method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention provides an oil and gas well construction control method and device, electronic equipment and a storage medium. The method comprises the steps that fracturing is conducted on the ith section of an oil-gas well of a target oil-gas well according to the ith fracturing parameter, the ith wellhead pressure of the target oil-gas well when the ith section of the oil-gas well is fractured is obtained, and the ith well bottom fracture pressure corresponding to the ith section of the oil-gas well is determined according to the ith wellhead pressure and the ith fracturing parameter, and generating construction parameters of the (i + 1) th section of the oil-gas well according to the ith well bottom fracture pressure. According to the ith wellhead pressure and the ith fracturing parameter of the target oil and gas well when the ith oil and gas well is fractured, the ith well bottom fracture pressure corresponding to the ith oil and gas well can be accurately determined, reservoir changes of all sections can be qualitatively described, reservoir changes of different wells and different fractured sections can be compared, and fracturing construction of all the sections can be further guided; and meanwhile, after the fracture pressure is obtained, the dynamic adjustment of fracturing construction parameters can be further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shale oil and gas reservoir transformation, and in particular to an oil and gas well construction control method, device, electronic equipment and storage medium. Background Art

[0002] At present, there are many methods for predicting and calculating bottom hole fracture pressure, such as: using seismic and well logging methods to calculate fracture pressure; using a combination of logging and well logging to calculate fracture pressure; using a combination of seismic, well logging and microseismic methods to predict fracture pressure; using well logging curve formula to calculate fracture pressure; using a combination of experiments and well logging to calculate the bottom hole fracture pressure of coalbed methane wells; using the method of statistically analyzing the average fracture pressure of a block to predict the fracture pressure of a certain layer; using comprehensive logging and well logging methods to calculate fracture pressure, etc.

[0003] However, the fracture pressure obtained by seismic, well logging and mud logging methods is quite different from the fracture pressure obtained by actual fracturing construction, and the accuracy is not high. The method of statistically analyzing the fracture pressure of each layer is not very instructive for exploration wells and test well groups in newly developed blocks, and it cannot accurately reflect the fracture pressure of each fracturing position in each well.

[0004] Therefore, the current technology has the technical problem of inaccurate prediction and calculation of bottom hole fracture pressure. Summary of the invention

[0005] In order to alleviate the technical problem of inaccurate prediction and calculation of bottom hole fracture pressure in current technology, the embodiments of the present invention provide an oil and gas well construction control method, device, electronic equipment and storage medium.

[0006] In a first aspect, an embodiment of the present invention provides an oil and gas well construction control method, comprising:

[0007] According to the i-th fracturing parameter, the i-th section of the target oil and gas well is fractured, where i is an integer;

[0008] Acquire the i-th wellhead pressure of the target oil and gas well during the fracturing of the i-th section of the oil and gas well;

[0009] Determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter;

[0010] According to the i-th bottom hole fracture pressure, the construction parameters of the i+1-th section of the oil and gas well are generated.

[0011] In some embodiments, obtaining the i-th wellhead pressure of the target oil and gas well during the fracturing of the i-th section of the oil and gas well includes:

[0012] Acquire multiple i-th wellhead pressure change values ​​of the target oil and gas well when the i-th section oil and gas well is in the fracturing stage;

[0013] The i-th wellhead pressure is determined according to a plurality of i-th wellhead pressure change values.

[0014] In some implementations, determining the i-th wellhead pressure according to a plurality of i-th wellhead pressure change values ​​includes:

[0015] Determining an i-th wellhead pressure change curve according to a plurality of the i-th wellhead pressure change values;

[0016] The ith wellhead pressure is determined according to the ith wellhead pressure variation curve.

[0017] In some embodiments, determining the i-th bottom hole fracture pressure according to the i-th wellhead pressure and the i-th fracturing parameter comprises:

[0018] According to the i-th fracturing parameter, generating the i-th liquid column pressure and the i-th wellbore friction;

[0019] The i-th bottom hole fracture pressure is determined according to the i-th wellhead pressure, the i-th liquid column pressure and the i-th wellbore friction.

[0020] In some embodiments, before fracturing the i-th section of the target oil and gas well according to the i-th fracturing parameter, the method further includes:

[0021] Obtaining a first corresponding relationship between the friction resistance value of clean water and the displacement, and a second corresponding relationship between the friction resistance value of slippery water and the displacement;

[0022] According to the first corresponding relationship and the second corresponding relationship, the bridge plug ball displacement parameter in the i-th fracturing parameter is determined.

[0023] In some embodiments, generating the construction parameters of the i+1th oil and gas well according to the i-th bottom hole fracture pressure includes:

[0024] Determining the reservoir change parameter of the i+1th oil and gas well according to the i-th bottom hole fracture pressure;

[0025] The construction parameters of the i+1th section of the oil and gas well are determined according to the reservoir change parameters of the i+1th section of the oil and gas well.

[0026] In some embodiments, the construction parameters include the amount of silt sand grinding and the amount of acid.

[0027] In a second aspect, an embodiment of the present invention provides an oil and gas well construction control device, comprising:

[0028] The first module is used to perform fracturing on the i-th section of the target oil and gas well according to the i-th fracturing parameter, where i is an integer;

[0029] The second module is used to obtain the i-th wellhead pressure of the target oil and gas well when the i-th section of the oil and gas well is being fractured;

[0030] The third module is used to determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter;

[0031] The fourth module is used to generate the construction parameters of the i+1th section of the oil and gas well according to the i-th bottom hole fracture pressure.

[0032] In a third aspect, an embodiment of the present invention provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the method described in the first aspect is implemented.

[0033] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by one or more processors, the method described in the first aspect is implemented.

[0034] Compared with the prior art, one or more embodiments of the present invention can at least bring the following beneficial effects:

[0035] The embodiment of the present invention provides an oil and gas well construction control method, device, electronic device and storage medium; the method includes fracturing the i-th section of the target oil and gas well according to the i-th fracturing parameter, i is an integer, obtaining the i-th wellhead pressure of the target oil and gas well when the i-th section of the oil and gas well is fracturing, determining the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter, and generating the construction parameters of the i+1-th section of the oil and gas well according to the i-th bottom hole fracture pressure. In the method provided by this scheme, according to the i-th wellhead pressure and the i-th fracturing parameter of the target oil and gas well when the i-th section of the oil and gas well is fracturing, the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well can be accurately determined, and the reservoir changes of each section can be qualitatively described, and the reservoir changes of different wells and different fracturing sections can be compared, which can further guide the fracturing construction of each section; at the same time, after obtaining the fracture pressure, the dynamic adjustment of the fracturing construction parameters can be further improved, so that the success rate of the post-fracturing construction of each section is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic diagram of a flow chart of an oil and gas well construction control method provided in an embodiment of the present application;

[0038] Figure 2 An actual construction curve diagram of a shale gas well in a certain area provided in an embodiment of the present application, in which the wellhead pressure rises to the peak Pmax after the bridge plug ball is set;

[0039] Figure 3 A schematic diagram of calculating the fracture pressure values ​​of each section of a shale gas well in a certain area by using the oil and gas well construction control method provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of using the oil and gas well construction control method provided in an embodiment of the present application to calculate the fracture pressure values ​​of each section of a shale gas well in another region;

[0041] Figure 5 A schematic diagram of the structure of an oil and gas well construction control device provided in an embodiment of the present application.

[0042] In the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0043] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present application.

[0044] Meanwhile, in the following description, many specific details are set forth for the purpose of explanation to provide a thorough understanding of the embodiments of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the specific details or the specific manner described herein.

[0045] Embodiment 1

[0046] Figure 1 For a flow chart of the oil and gas well construction control method provided in the embodiment of the present application, please refer to Figure 1 The oil and gas well construction control method provided in this embodiment includes:

[0047] Step S110: performing fracturing on the i-th section of the target oil and gas well according to the i-th fracturing parameter, where i is an integer.

[0048] In the present application, the fracturing parameters at least include the bridge plug ball displacement parameter, etc.; the value range of i is preferably: 2≤i≤10.

[0049] In some embodiments, before fracturing the i-th section of the target oil and gas well according to the i-th fracturing parameter, it also includes: obtaining a first corresponding relationship between the friction value and the displacement of clean water, and a second corresponding relationship between the friction value and the displacement of slick water; and determining the bridge plug ball displacement parameter in the i-th fracturing parameter according to the first corresponding relationship and the second corresponding relationship.

[0050] In this application, the displacement parameter of the bridge plug ball can be 1-5m 3 / min, etc. In this embodiment, the displacement parameter of the bridge plug ball is preferably 2m 3 / min.

[0051] At present, the majority of shale oil and gas horizontal well fracturing adopts the technology of bare casing (two sizes of φ139.7mm or φ114.3mm) + pumped bridge plug perforation. The main steps of this technology are: (1) the first section adopts oil-connected perforation or opening the toe sleeve; (2) fracturing the first section; (3) using cable pumping hollow soluble or drillable bridge plug to the designated position for sealing, and then lifting the perforating gun to perforate each cluster in the second section, and then pulling out of the wellhead after perforation; (4) pumping the bridge plug ball into the wellbore to seal the first section; (5) fracturing the second section; (6) fracturing the last section according to steps (3), (4), and (5).

[0052] Wherein, the above step (2) may include: a. cluster perforating the first section, with a hole diameter of 15 mm, a hole density of 19 holes / m, a length of each cluster of 1-1.5 m, and 2-3 perforation clusters; b. fracturing the first cluster, using a fracturing truck, a sand mixing truck, a manifold truck, an instrument truck, a sand tower and other equipment to pump sand-containing slick water, and slowly increase the pumping pressure according to the order of reservoir stress from low to high, so that the reservoir with low stress is broken first, and the reservoir with low stress is subjected to fracturing construction; the construction pressure is gradually increased during the construction process, and the pressure is kept constant until the pressure is high. After the reservoir is obviously broken, the pumping pressure will drop significantly, and then the construction displacement will be increased to the designed displacement to carry out fracturing construction; c. Throwing balls to plug the first cluster, put the balls into the ball thrower, and manually operate the ball thrower. For each rotation of the ball thrower, generally 4-5 balls will enter the wellbore. As the slippery water enters the reservoir, the holes will be plugged; the number of balls thrown is 1.2 times that of the blasthole; the size of the ball is determined according to different perforation parameters, that is, the size of the hole determines the size of the ball, and the pumping displacement is 2-3m3 / min; d. Repeat the fracturing construction, ball throwing, and plugging steps in steps b and c for the second cluster and the third cluster in turn, until the fracturing construction, ball throwing, and plugging steps for each cluster in the first section are completed.

[0053] It can be understood that the subsequent fracturing construction, ball dropping and plugging steps for each cluster in the second, third, fourth, ..., i-th sections are the same as the above method in the first section.

[0054] In the embodiment of the present application, in the above step (4), i.e., the bridge plug setting stage, the φ139.7 mm or φ114.3 mm casing mainly contains a mixture of pre-treated acid, clean water and part of slick water, and a first corresponding relationship between the friction resistance value of clean water and the displacement, and a second corresponding relationship between the friction resistance value of slick water and the displacement are obtained; according to the first corresponding relationship and the second corresponding relationship, the bridge plug displacement parameter in the i-th fracturing parameter is determined; since the displacement at this time is small, the bridge plug displacement parameter is preferably 2m 3 After determining the bridge plug ball displacement parameter in the i-th fracturing parameter, the i-th section of the target oil and gas well is fractured according to the parameter.

[0055] Step S120: Acquire the i-th wellhead pressure of the target oil and gas well when fracturing the i-th section of the oil and gas well.

[0056] In some embodiments, obtaining the i-th wellhead pressure of the target oil and gas well when the i-th section of the oil and gas well is fracturing includes: obtaining multiple i-th wellhead pressure change values ​​of the target oil and gas well when the i-th section of the oil and gas well is in the fracturing stage; and determining the i-th wellhead pressure based on the multiple i-th wellhead pressure change values.

[0057] In some embodiments, determining the i-th wellhead pressure based on multiple i-th wellhead pressure change values ​​includes: determining the i-th wellhead pressure change curve based on multiple i-th wellhead pressure change values; determining the i-th wellhead pressure based on the i-th wellhead pressure change curve.

[0058] In the embodiment of the present application, when fracturing the i-th section of the oil and gas well, the i-1th section needs to be sealed, and the drillable bridge plug is pumped to the designated position for sealing by cable pumping, and then the perforating gun is lifted to perform perforation of each cluster of the i-th section, and the wellhead is pulled out after the perforation is completed; specifically, through 2m 3 / min displacement pumps the bridge plug ball into the bottom of the well. At the moment the bridge plug ball is seated on the bridge plug, the perforation cluster will pop open, and the wellhead pressure will increase significantly. After the pressure increases to the peak Pmax, it will decrease, indicating that the formation is fracturing; that is, when the i-th section of the oil and gas well is in the fracturing stage, multiple i-th wellhead pressure values ​​of the target oil and gas well change (increase), and the i-th wellhead pressure change curve can be determined based on the multiple i-th wellhead pressure change values, and the highest point of the i-th wellhead pressure change curve is determined as the i-th wellhead pressure (that is, the wellhead surface pressure peak value Pmax).

[0059] Step S130: determining the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter.

[0060] In some embodiments, determining the i-th bottom hole fracture pressure according to the i-th wellhead pressure and the i-th fracturing parameter includes: generating the i-th liquid column pressure and the i-th wellbore friction according to the i-th fracturing parameter; and determining the i-th bottom hole fracture pressure according to the i-th wellhead pressure, the i-th liquid column pressure, and the i-th wellbore friction.

[0061] Specifically, during the stage of the bridge plug setting, the φ139.7mm or φ114.3mm casing is mainly a mixture of pre-treated acid, clean water and some slippery water. 3 / min), the friction value of slick water is equivalent to that of clean water. At this time, the liquid in the wellbore can be equivalent to clean water. The friction formula of clean water is used to calculate the wellbore friction P according to the entire casing length from the perforation section to the wellhead. Then the wellbore friction P and the liquid column pressure P1 are brought into the bottom hole fracture pressure calculation formula: bottom hole fracture pressure Pf = ground pressure peak value Pmax + liquid column pressure Pl - wellbore friction P, and the fracture pressure value of each section can be obtained relatively easily; that is, if the i-th section is fractured, then the i-th bottom hole fracture pressure is equal to the i-th wellhead pressure (i.e., the wellhead ground pressure peak value Pmax) plus the i-th liquid column pressure minus the i-th wellbore friction.

[0062] It should be noted that the bottom hole fracture pressure of the first section is calculated by using the inversion algorithm of the above method.

[0063] Step S140: generating construction parameters of the i+1th section of the oil and gas well according to the i-th bottom hole fracture pressure.

[0064] In some embodiments, generating the construction parameters of the i+1th section of oil and gas well based on the i-th bottom hole fracture pressure includes: determining the reservoir change parameters of the i+1th section of oil and gas well based on the i-th bottom hole fracture pressure; determining the construction parameters of the i+1th section of oil and gas well based on the reservoir change parameters of the i+1th section of oil and gas well.

[0065] In some embodiments, the construction parameters include the amount of silt sand grinding and the amount of acid.

[0066] Specifically, after fracturing the i-th section, a hollow soluble or drillable bridge plug is pumped to a designated position by cable pumping for sealing, and then the perforating gun is lifted to perform perforation of each cluster of the i+1 section, and the wellhead is pulled out after the perforation is completed; after the bridge plug ball is pumped into the wellbore, the i-th section is sealed, and the i+1 section is fractured; these steps are subsequently repeated for fracturing until the last section is completed.

[0067] Through the above-mentioned oil and gas well construction control method, the bottom hole fracture pressure value of each section of the oil and gas well can be obtained relatively easily, the reservoir changes of each section can be qualitatively described, and the reservoir changes of different wells and different fracturing sections can be compared, which can further guide the fracturing construction of each section; in addition, after determining the bottom hole fracture pressure, the pressure when the fracture is displayed in the large-volume fracture making stage can also be used to deduce the main friction resistance value, and dynamically adjust the construction parameters such as the silt grinding treatment amount and the acid amount.

[0068] Based on the above records, this application is now described in detail in combination with specific scenarios.

[0069] The oil and gas well construction control method of the present application can be used to calculate the bottom hole bursting pressure of each section of shale oil and gas horizontal well exploration and development wells. The bursting pressure values ​​of different sections can reflect different geological conditions to a certain extent. During fracturing construction, the bursting pressure value of each section can be accurately calculated in advance to guide the dynamic adjustment of fracturing construction parameters and improve the transformation effect. The oil and gas well construction control method of the present application was used to calculate the bursting pressure values ​​of more than 100 sections of multiple wells. There are certain differences in the bottom hole bursting pressure of each section, which is mainly manifested in the natural fracture development section and the near-fault section. The bottom hole bursting pressure value is low, and vice versa.

[0070] See also Figure 2 and Figure 3 , Figure 2 An actual construction curve diagram of a shale gas well in a certain area provided in an embodiment of the present application, in which the wellhead pressure rises to the peak Pmax after the bridge plug ball is set; Figure 3 A schematic diagram of calculating the fracture pressure values ​​of each section of a shale gas well in a certain area by using an oil and gas well construction control method provided in an embodiment of the present application (wherein, Figure 3 The first-stage rupture pressure value is calculated using the inversion algorithm of this method. Figure 2As shown in Figure 1, a deep shale gas well in the ××× area has a vertical depth of 4242.00-4364.53 m and passes through small layers ②, ③, and ④. There are small faults around. This well was fractured in 25 sections. The pressure values ​​of the wellhead pressure rising to the peak Pmax after the bridge plug ball was seated in each section were recorded (such as Figure 2 The bottom hole fracture pressure of each section is obtained by calculating the bottom hole fracture pressure Pf = the ground pressure peak value Pmax + the liquid column pressure Pl - the wellbore friction P (as shown in the middle curve). Figure 3 shown).

[0071] from Figure 3 As shown in the figure, the 1st to 11th sections of this well are far from the fault and have higher fracture pressure values. In view of this feature, more silt sand and silt pottery were used to grind the holes during the on-site implementation to reduce the friction resistance near the wellbore and increase the acid dosage of each section to 60m 3 The 12th to 23rd sections are close to the fault and have a low fracture pressure. In view of this feature, the amount of acid used was reduced to 40m 3 The bottom hole fracture pressure calculated by this method has a good correspondence with the formation knowledge. After the fracture pressure value is obtained by this method, the dynamic adjustment of the fracturing operation parameters can be further improved. The success rate of each section after fracturing is high. The test production of this well is high, reaching 42.66×10 4 m 3 / d, and achieved good application effect.

[0072] See also Figure 4 , Figure 4 A schematic diagram of calculating the fracture pressure values ​​of each section of a shale gas well in another region using an oil and gas well construction control method provided in an embodiment of the present application (wherein, Figure 4 The first-stage rupture pressure value is calculated using the inversion algorithm of this method. Figure 4 As shown in the figure, a deep shale gas well in the ××× area has a vertical depth of 4242.17m at target A and 4343.80m at target B. The well was fractured for 30 stages, and the pressure value of the wellhead pressure rising to the peak Pmax after the bridge plug ball was seated in each stage was recorded. The bottom hole fracture pressure Pf of each stage was obtained by the calculation formula: the top value of the ground pressure Pmax + the liquid column pressure Pl - the wellbore friction P. Figure 4 ).

[0073] The fracture pressure value calculated by the oil and gas well construction control method provided in the embodiment of the present application further improves the dynamic adjustment of each stage of fracturing construction parameters. The construction success rate of this well after fracturing is high, and the test production of this well is also high, reaching 41.2×10 4 m 3 / d, and achieved good application effect.

[0074] According to the above two cases, the oil and gas well construction control method provided in the embodiment of the present application has been applied in various shale oil and gas blocks in the above two regions. The calculated bottom hole fracture pressure result is relatively accurate, which can qualitatively reflect the changes in each section of the reservoir, and effectively guide the adjustment of each section of the fracturing construction parameters, thus helping to achieve better results after multiple deep shale gas pressure tests.

[0075] In summary, this embodiment can accurately determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter of the target oil and gas well during the fracturing of the i-th section of the oil and gas well, can qualitatively describe the reservoir changes in each section, and can also compare the reservoir changes of different wells and different fracturing sections, which can further guide the fracturing construction of each section; at the same time, after obtaining the fracture pressure, the dynamic adjustment of the fracturing construction parameters can be further improved, so that the success rate of the post-fracturing construction of each section is higher.

[0076] Embodiment 2

[0077] Figure 5 For a structural diagram of the oil and gas well construction control device provided in the embodiment of the present application, please refer to Figure 5 The oil and gas well construction control device provided in this embodiment includes:

[0078] The first module 510 is used to perform fracturing on the i-th section of the target oil and gas well according to the i-th fracturing parameter, where i is an integer;

[0079] The second module 520 is used to obtain the i-th wellhead pressure of the target oil and gas well when the i-th section oil and gas well is being fractured;

[0080] The third module 530 is used to determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter;

[0081] The fourth module 540 is used to generate the construction parameters of the i+1th section of the oil and gas well according to the i-th bottom hole fracture pressure.

[0082] In some embodiments, the second module 520 is also used to obtain multiple i-th wellhead pressure change values ​​of the target oil and gas well when the i-th section of the oil and gas well is in the fracturing stage; and determine the i-th wellhead pressure based on the multiple i-th wellhead pressure change values.

[0083] In some embodiments, the second module 520 is further used to determine the i-th wellhead pressure change curve according to a plurality of the i-th wellhead pressure change values; and determine the i-th wellhead pressure according to the i-th wellhead pressure change curve.

[0084] In some embodiments, the third module 530 is also used to generate the i-th liquid column pressure and the i-th wellbore friction according to the i-th fracturing parameter; and determine the i-th bottom hole fracture pressure according to the i-th wellhead pressure, the i-th liquid column pressure and the i-th wellbore friction.

[0085] In some embodiments, the fourth module 540 is also used to determine the reservoir change parameters of the i+1th section of the oil and gas well based on the i-th bottom hole fracture pressure; and to determine the construction parameters of the i+1th section of the oil and gas well based on the reservoir change parameters of the i+1th section of the oil and gas well.

[0086] The specific implementation examples based on the above-mentioned modules for executing the method have been described in detail in the first embodiment and will not be repeated here.

[0087] Embodiment 3

[0088] This embodiment provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the oil and gas well fracturing control method described in Embodiment 1 is implemented. It is understood that the electronic device may also include an input / output (I / O) interface and a communication component.

[0089] The processor is used to execute all or part of the steps in the oil and gas well fracturing control method in Example 1. The memory is used to store various types of data, which may include instructions of any application or method in the terminal device, and data related to the application.

[0090] The processor can be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute the oil and gas well fracturing control method in the above-mentioned embodiment 1.

[0091] The memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0092] Embodiment 4

[0093] This embodiment also provides a computer-readable storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a disk, an optical disk, a server, an App application store, etc., wherein a computer program is stored on the storage medium, and when the computer program is executed by a processor, the following method steps can be implemented:

[0094] According to the i-th fracturing parameter, the i-th section of the target oil and gas well is fractured, where i is an integer;

[0095] Acquire the i-th wellhead pressure of the target oil and gas well during the fracturing of the i-th section of the oil and gas well;

[0096] Determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter;

[0097] According to the i-th bottom hole fracture pressure, the construction parameters of the i+1-th section of the oil and gas well are generated.

[0098] The specific implementation process of the above method steps can be found in Example 1, and this embodiment will not be repeated here.

[0099] In summary, the embodiments of the present invention provide an oil and gas well construction control method, device, electronic device and storage medium; the method includes fracturing the i-th section of the target oil and gas well according to the i-th fracturing parameter, i is an integer, obtaining the i-th wellhead pressure of the target oil and gas well when fracturing the i-th section of the oil and gas well, determining the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter, and generating the construction parameters of the i+1-th section of the oil and gas well according to the i-th bottom hole fracture pressure. In the method provided in this scheme, according to the i-th wellhead pressure and the i-th fracturing parameter of the target oil and gas well during the fracturing of the i-th section of the oil and gas well, the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well can be accurately determined, the reservoir changes in each section can be qualitatively described, and the reservoir changes in different wells and different fracturing sections can be compared, which can further guide the fracturing construction of each section; at the same time, after obtaining the fracture pressure, the dynamic adjustment of the fracturing construction parameters can be further improved, so that the success rate of the post-fracturing construction of each section is higher.

[0100] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0101] Although the implementation methods disclosed in this application are as above, the contents described are only implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A method for controlling oil and gas well construction, characterized in that: include: According to the i-th fracturing parameter, the i-th section of the target oil and gas well is fractured, where i is an integer; Acquire the i-th wellhead pressure of the target oil and gas well during the fracturing of the i-th section of the oil and gas well; Determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter; According to the i-th bottom hole fracture pressure, the construction parameters of the i+1-th section of the oil and gas well are generated.

2. The oil and gas well fracturing control method according to claim 1, characterized in that: The obtaining of the i-th wellhead pressure of the target oil and gas well during the fracturing of the i-th section of the oil and gas well comprises: Acquire multiple i-th wellhead pressure change values ​​of the target oil and gas well when the i-th section oil and gas well is in the fracturing stage; The i-th wellhead pressure is determined according to a plurality of i-th wellhead pressure change values.

3. The oil and gas well fracturing control method according to claim 2, characterized in that: The step of determining the i-th wellhead pressure according to the plurality of i-th wellhead pressure change values ​​comprises: Determining an i-th wellhead pressure change curve according to a plurality of the i-th wellhead pressure change values; The ith wellhead pressure is determined according to the ith wellhead pressure variation curve.

4. The oil and gas well fracturing control method according to claim 1, characterized in that: The step of determining the i-th bottom hole fracture pressure according to the i-th wellhead pressure and the i-th fracturing parameter comprises: According to the i-th fracturing parameter, generating the i-th liquid column pressure and the i-th wellbore friction; The i-th bottom hole fracture pressure is determined according to the i-th wellhead pressure, the i-th liquid column pressure and the i-th wellbore friction.

5. The oil and gas well fracturing control method according to claim 4, characterized in that: Before fracturing the i-th section of the target oil and gas well according to the i-th fracturing parameter, the method further includes: Obtaining a first corresponding relationship between the friction resistance value of clean water and the displacement, and a second corresponding relationship between the friction resistance value of slippery water and the displacement; According to the first corresponding relationship and the second corresponding relationship, the bridge plug ball displacement parameter in the i-th fracturing parameter is determined.

6. The oil and gas well fracturing control method according to any one of claims 1 to 5, characterized in that: The generating of the construction parameters of the i+1th oil and gas well according to the i-th bottom hole fracture pressure comprises: Determining the reservoir change parameter of the i+1th oil and gas well according to the i-th bottom hole fracture pressure; The construction parameters of the i+1th section of the oil and gas well are determined according to the reservoir change parameters of the i+1th section of the oil and gas well.

7. The oil and gas well fracturing control method according to claim 6, characterized in that: The construction parameters include the amount of silt sand grinding and the amount of acid.

8. An oil and gas well construction control device, characterized in that: include: The first module is used to perform fracturing on the i-th section of the target oil and gas well according to the i-th fracturing parameter, where i is an integer; The second module is used to obtain the i-th wellhead pressure of the target oil and gas well when the i-th section of the oil and gas well is being fractured; The third module is used to determine the i-th bottom hole fracture pressure corresponding to the i-th section of the oil and gas well according to the i-th wellhead pressure and the i-th fracturing parameter; The fourth module is used to generate the construction parameters of the i+1th section of the oil and gas well according to the i-th bottom hole fracture pressure.

9. An electronic device, characterized in that: The method comprises a memory and a processor; a computer program is stored in the memory, and when the computer program is executed by the processor, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the method according to any one of claims 1 to 7 is implemented.

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