Oil well development method and apparatus

Abstract

The application discloses an oil well development method and device, and belongs to the technical field of oil exploitation. The method comprises the following steps: acquiring reservoir data of a target oil reservoir, wherein the reservoir data comprises oil layer thickness and oil saturation of N oil-bearing sand layers; drilling to a first position with a first length in the target oil reservoir at a first angle of inclination to obtain a first section of oil layers of an oil well; determining a target oil-bearing sand layer based on the oil layer thickness and the oil saturation of the N oil-bearing sand layers; adjusting the angle of inclination to a second angle, drilling to a second position with a second length from the first position at the second angle to obtain a second section of oil layers of the oil well; adjusting the angle of inclination to a third angle, and drilling to a third position from the second position at the third angle to obtain a third section of oil layers of the oil well; determining a target oil well based on the first section of oil layers of the oil well, the second section of oil layers of the oil well and the third section of oil layers of the oil well, and carrying out oil extraction based on the target oil well. The method can improve the oil production of the target oil well and improve the oil layer drilling rate of the target oil well.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of oil exploitation, and particularly relate to an oil well development method and device. BACKGROUND

[0002] In the process of oil exploitation, in order to collect oil in the underground reservoir, an oil well is generally drilled, which can be in communication with the underground reservoir, so that the crude oil in the underground reservoir can be collected through the oil well.

[0003] In the related art, a complex structure well such as a straight well or a horizontal well, or a high-inclination well is generally used. The horizontal well refers to a well that continues to extend a certain length after the well trajectory reaches a horizontal state. The high-inclination well refers to a directional well with a ratio of the drilling inclination length to the vertical depth greater than 2 and an inclination angle between 60 degrees and 86 degrees.

[0004] However, since the underground reservoir includes multiple oil-bearing sand layers, when oil is extracted according to the horizontal well, only a single oil-bearing sand layer in the reservoir can be controlled, which can easily reduce the oil production of the oil well. When oil is extracted according to the high-inclination well, since multiple interlayers are also drilled through when drilling through multiple oil-bearing sand layers, the oil layer drilling success rate of the oil well is relatively low. Therefore, there is an urgent need for an oil well development method to develop an oil well, and oil is extracted based on the developed oil well, so as to improve the oil production of the oil well and improve the oil layer drilling success rate of the oil well. SUMMARY

[0005] Embodiments of the present application provide an oil well development method and device, which can be used to solve the problems of low oil production of an oil well and low oil layer drilling success rate of the oil well in the related art. The technical solution is as follows:

[0006] On the one hand, the embodiments of the present application provide an oil well development method, which comprises:

[0007] obtaining reservoir data of a target reservoir, the target reservoir including N oil-bearing sand layers, the reservoir data including oil layer thicknesses of the N oil-bearing sand layers and oil-bearing saturations of the N oil-bearing sand layers, the N being an integer greater than or equal to 1;

[0008] drilling a first length to a first position in the target reservoir according to a first angle of inclination to obtain a first section of oil layer of an oil well, the first section of oil layer of the oil well drilling through M oil-bearing sand layers, the M being an integer greater than or equal to 1 and less than or equal to the N;

[0009] determining a target oil-bearing sand layer based on the oil layer thicknesses of the N oil-bearing sand layers and the oil-bearing saturations of the N oil-bearing sand layers;

[0010] adjusting the hole angle to a second angle, drilling a second length from the first position to a second position according to the second angle to obtain a second section of the oil well, the second position being located in the target oil-bearing sand layer;

[0011] adjusting the hole angle to a third angle, continuing to drill from the second position to a third position according to the third angle to obtain a third section of the oil well, the first angle, the second angle and the third angle being different angles respectively;

[0012] determining a target oil well based on the first section of the oil well, the second section of the oil well and the third section of the oil well, and performing oil extraction based on the target oil well.

[0013] In a possible implementation, the reservoir data further includes thicknesses of N-1 interlayers;

[0014] drilling a first length in the target reservoir according to a hole angle of a first angle to obtain a first section of the oil well, including:

[0015] determining the first length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 interlayers and the first angle;

[0016] drilling the first length in the target reservoir according to the hole angle of the first angle to obtain the first section of the oil well.

[0017] In a possible implementation, the adjusting the hole angle to a second angle, drilling a second length from the first position to a second position according to the second angle to obtain a second section of the oil well, includes:

[0018] adjusting the hole angle to a second angle, determining the second length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 interlayers, the target oil-bearing sand layer and the second angle;

[0019] drilling the second length from the first position to a second position according to the second angle to obtain a second section of the oil well.

[0020] In a possible implementation, the determining a target oil-bearing sand layer based on the oil layer thicknesses of the N oil-bearing sand layers and the oil-bearing saturations of the N oil-bearing sand layers, includes:

[0021] determining an oil-bearing sand layer with an oil layer thickness meeting a first target requirement in the N oil-bearing sand layers as the target oil-bearing sand layer;

[0022] or, determining an oil-bearing sand layer with an oil-bearing saturation meeting a second target requirement in the N oil-bearing sand layers as the target oil-bearing sand layer;

[0023] Or, the oil-bearing sand layer in the N oil-bearing sand layers with the oil layer thickness meeting the first target requirement and the oil-bearing saturation meeting the second target requirement is determined as the target oil-bearing sand layer.

[0024] In a possible implementation, the first length is determined based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 interlayers, and the first angle.

[0025] The thickness of the target oil reservoir is determined based on the oil layer thicknesses of the N oil-bearing sand layers and the thicknesses of the N-1 interlayers.

[0026] The first length L1 is determined based on the thickness of the target oil reservoir and the first angle according to the following formula:

[0027]

[0028] Wherein, the α is the first angle, and the A is the thickness of the target oil reservoir.

[0029] In a possible implementation, the well inclination is adjusted to a second angle, and the second length is determined based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 interlayers, the target oil-bearing sand layer, and the second angle.

[0030] The first distance from the first position to the target oil-bearing sand layer is determined based on the oil layer thicknesses of the N oil-bearing sand layers and the thicknesses of the N-1 interlayers.

[0031] The second length L2 is determined based on the second angle and the first distance according to the following formula:

[0032]

[0033] Wherein, the X is the first distance, and the β is the second angle.

[0034] In a possible implementation, after the target oil well is determined based on the first section of the oil well, the second section of the oil well, and the third section of the oil well, the method further includes:

[0035] Determining the length of the target oil well.

[0036] Determining the drilled oil layer length of the target oil well.

[0037] Determining the oil layer drilling rate of the target oil well based on the length of the oil well and the drilled oil layer length, the oil layer drilling rate being used to evaluate the target oil well.

[0038] In a possible implementation, the first angle ranges from 60 degrees to 86 degrees, the second angle ranges from 91 degrees to 95 degrees, and the third angle ranges from 86 degrees to 90 degrees.

[0039] In another aspect, an oil well development device is provided, and the device includes:

[0040] An acquisition module is configured to acquire reservoir data of a target reservoir, the target reservoir including N oil-bearing sand layers, the reservoir data including oil layer thicknesses of the N oil-bearing sand layers and oil-bearing saturations of the N oil-bearing sand layers, and N being an integer greater than or equal to 1.

[0041] A drilling module is configured to drill a first length to a first position in the target reservoir at a hole inclination angle of a first angle, to obtain a first section of oil layers of an oil well, the first section of oil layers of the oil well penetrating M oil-bearing sand layers, and M being an integer greater than or equal to 1 and less than or equal to N.

[0042] A determination module is configured to determine a target oil-bearing sand layer based on the oil layer thicknesses of the N oil-bearing sand layers and the oil-bearing saturations of the N oil-bearing sand layers.

[0043] The drilling module is further configured to adjust the hole inclination angle to a second angle, to drill a second length from the first position at the second angle to obtain a second section of oil layers of the oil well, and the second position being located in the target oil-bearing sand layer.

[0044] The drilling module is further configured to adjust the hole inclination angle to a third angle, to continue drilling from the second position at the third angle to a third position to obtain a third section of oil layers of the oil well, and the first angle, the second angle, and the third angle being different angles.

[0045] The determination module is further configured to determine a target oil well based on the first section of oil layers of the oil well, the second section of oil layers of the oil well, and the third section of oil layers of the oil well, and to perform oil extraction based on the target oil well.

[0046] In a possible implementation, the reservoir data further includes thicknesses of N-1 barriers.

[0047] The drilling module is configured to determine the first length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 barriers, and the first angle.

[0048] The first length is drilled in the target reservoir at a hole inclination angle of a first angle to obtain a first section of oil layers of an oil well.

[0049] In one possible implementation, the drilling module is used to adjust the well inclination angle to a second angle, and determine the second length based on the oil layer thickness of the N oil-bearing sand layers, the thickness of the N-1 interlayers, the target oil-bearing sand layer, and the second angle;

[0050] Drill the second length from the first position to the second position at the second angle to obtain the second oil layer of the oil well.

[0051] In one possible implementation, the determining module is used to determine the oil-bearing sand layer among the N oil-bearing sand layers whose oil layer thickness meets the first target requirement as the target oil-bearing sand layer;

[0052] Alternatively, the oil-bearing sand layer among the N oil-bearing sand layers whose oil saturation meets the second target requirement can be determined as the target oil-bearing sand layer;

[0053] Alternatively, the oil-bearing sand layer among the N oil-bearing sand layers whose oil layer thickness meets the first target requirement and whose oil saturation meets the second target requirement can be determined as the target oil-bearing sand layer.

[0054] In one possible implementation, the determining module is used to determine the thickness of the target reservoir based on the oil layer thickness of the N oil-bearing sand layers and the thickness of the N-1 interlayers;

[0055] Based on the thickness of the target reservoir and the first angle, the first length L1 is determined according to the following formula:

[0056]

[0057] Wherein, α is the first angle, and A is the thickness of the target reservoir.

[0058] In one possible implementation, the determining module is used to determine a first distance from the first location to the target oil-bearing sand layer based on the oil layer thickness of the N oil-bearing sand layers and the thickness of the N-1 interlayers;

[0059] Based on the second angle and the first distance, the second length L2 is determined according to the following formula:

[0060]

[0061] Wherein, X is the first distance, and β is the second angle.

[0062] In one possible implementation, the determining module is further configured to determine the well length of the target oil well;

[0063] Determine the length of the oil-bearing layer encountered by the target oil well;

[0064] Based on the oil well length and the drilled oil layer length, an oil layer drilling rate of the target oil well is determined, and the oil layer drilling rate is used to evaluate the target oil well.

[0065] In a possible implementation, the first angle ranges from 60 degrees to 86 degrees, the second angle ranges from 91 degrees to 95 degrees, and the third angle ranges from 86 degrees to 90 degrees.

[0066] The technical scheme provided by the embodiments of the present application at least brings the following beneficial effects:

[0067] The technical scheme provided by the embodiments of the present application determines the target oil well based on the reservoir data of the target reservoir. Since the oil well development method considers the oil layer thickness and oil saturation of each oil-bearing sand layer of the target reservoir when determining the target oil well, the oil production of the target oil well can be improved, and the oil layer drilling rate of the target oil well can be improved when oil production is performed according to the determined target oil well. BRIEF DESCRIPTION OF DRAWINGS

[0068] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0069] Figure 1 is a flowchart of an oil well development method provided by the embodiments of the present application;

[0070] Figure 2 is a schematic diagram of a target oil well developed in a target reservoir provided by the embodiments of the present application;

[0071] Figure 3 is a structural schematic diagram of an oil well development device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0072] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0073] The embodiment of the present application provides an oil well development method, which can be applied to an electronic device or a server. The electronic device is any electronic product capable of human-computer interaction with a user through one or more of a keyboard, a touchpad, a touch screen, a remote controller, voice interaction or handwriting equipment, such as a PC (Personal Computer), a mobile phone, a smart phone, a PDA (Personal Digital Assistant), a wearable device, a PPC (Pocket PC) and a tablet computer. The server is a server, or a server cluster composed of multiple servers, or at least one of a cloud computing platform and a virtualization center, and the embodiment of the present application does not limit this.

[0074] Those skilled in the art should understand that the above-mentioned electronic device and server are only examples, and other existing or future electronic devices or servers, such as those applicable to the present application, should also be included in the protection scope of the present application and are hereby included by reference.

[0075] The embodiment provides an oil well development method, and the execution subject of the oil well development method is taken as an example to be an electronic device. Figure 1 The method comprises the following steps 101 to 106.

[0076] In step 101, reservoir data of a target reservoir is acquired, the target reservoir comprises N oil-bearing sand layers, the reservoir data comprises oil layer thicknesses of the N oil-bearing sand layers and oil-bearing saturations of the N oil-bearing sand layers, and N is an integer greater than 1.

[0077] In a possible implementation, the target reservoir is an oil reservoir to be collected, a straight well is first drilled in or around the target reservoir, the reservoir data of the target reservoir is measured based on the straight well, and the reservoir data of the target reservoir and a reservoir number of the target reservoir are stored in the electronic device in correspondence, so that the reservoir data of the target reservoir can be quickly and accurately acquired based on the reservoir number of the target reservoir subsequently.

[0078] In a possible implementation, the target reservoir comprises N oil-bearing sand layers, and the reservoir data of the target reservoir comprises oil layer thicknesses of the N oil-bearing sand layers and oil-bearing saturations of the N oil-bearing sand layers. Of course, the reservoir data can also comprise other data of the target reservoir, and the embodiment of the present application only takes the oil layer thicknesses of the oil-bearing sand layers and the oil-bearing saturations of the oil-bearing sand layers as examples of the reservoir data of the target reservoir, and does not limit the reservoir data of the target reservoir.

[0079] Exemplarily, the target oil reservoir includes three oil-bearing sand layers. The first oil-bearing sand layer has an oil layer thickness of 4 meters and an oil-bearing saturation of 90%; the second oil-bearing sand layer has an oil layer thickness of 2.5 meters and an oil-bearing saturation of 85%; and the third oil-bearing sand layer has an oil layer thickness of 3 meters and an oil-bearing saturation of 80%.

[0080] In step 102, a first length is drilled in the target oil reservoir at a first angle of inclination to a first position, to obtain a first section of oil layers of the oil well.

[0081] The first angle is in a range of 60 degrees to 80 degrees, and the first section of oil layers of the oil well penetrates M oil-bearing sand layers, where M is an integer greater than or equal to 1 and less than or equal to N.

[0082] In a possible implementation, there are also barriers between the oil-bearing sand layers, and the reservoir data further include thicknesses of N-1 barriers. For example, since the target oil reservoir includes three oil-bearing sand layers, the target oil reservoir includes two barriers. The thickness of the barrier between the first oil-bearing sand layer and the second oil-bearing sand layer is 1 meter, and the thickness of the barrier between the second oil-bearing sand layer and the third oil-bearing sand layer is 1.5 meters. Of course, the thickness of the barrier between the oil-bearing sand layers can also be other values, which are not limited by the embodiments of the present application.

[0083] In a possible implementation, the process of drilling a first length in the target oil reservoir at a first angle of inclination to a first position to obtain a first section of oil layers of the oil well is as follows: determining the first length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 barriers, and the first angle of inclination; and drilling the first length in the target oil reservoir at the first angle of inclination to the first position to obtain the first section of oil layers of the oil well.

[0084] The process of determining the first length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 barriers, and the first angle of inclination is as follows:

[0085] Determining the thickness of the target oil reservoir based on the oil layer thicknesses of the N oil-bearing sand layers and the thicknesses of the N-1 barriers;

[0086] Determining the first length L1 based on the thickness of the target oil reservoir and the first angle of inclination according to the following formula (1):

[0087]

[0088] In the above formula (1), A is the thickness of the target oil reservoir, and a is the first angle of inclination.

[0089] Exemplarily, based on the oil layer thicknesses of the three oil-bearing sand layers obtained in step 101 and the thicknesses of the two barriers obtained in step 102, the thickness A of the target oil reservoir is determined as A = 3 + 2.5 + 4 + 1 + 1.5 = 12 m (meters). The first angle a is a = 60 degrees, and the first length L1 is calculated as L1 = A * tan (a) = 12 * tan (60) = 12 * 1.732 = 20.784 m according to the above formula (1). That is, 24 meters are drilled into the target oil reservoir at 60 degrees to the first position to obtain the first section of the oil layer of the oil well.

[0090] In step 103, the target oil-bearing sand layer is determined based on the oil layer thicknesses of the N oil-bearing sand layers and the oil-bearing saturations of the N oil-bearing sand layers.

[0091] In one possible implementation, there are the following three cases to determine the target oil-bearing sand layer.

[0092] Case one: the oil-bearing sand layer with the oil layer thickness satisfying the first target requirement among the N oil-bearing sand layers is determined as the target oil-bearing sand layer.

[0093] In one possible implementation, the oil layer thickness satisfying the first target requirement can be the maximum oil layer thickness, or other, which is not limited in the embodiments of the present application. Exemplarily, the oil-bearing sand layer with the maximum oil layer thickness among the N oil-bearing sand layers is determined as the target oil-bearing sand layer.

[0094] Taking the oil layer thicknesses of the three oil-bearing sand layers obtained in step 101 as an example, since the first oil-bearing sand layer has the maximum oil layer thickness, the first oil-bearing sand layer is determined as the target oil-bearing sand layer.

[0095] Case two: the oil-bearing sand layer with the oil-bearing saturation satisfying the second target requirement among the N oil-bearing sand layers is determined as the target oil-bearing sand layer.

[0096] In one possible implementation, the oil-bearing saturation satisfying the second target requirement can be the maximum oil-bearing saturation, or other, which is not limited in the embodiments of the present application. Exemplarily, the oil-bearing sand layer with the maximum oil-bearing saturation among the N oil-bearing sand layers is determined as the target oil-bearing sand layer.

[0097] Taking the oil layer thicknesses of the three oil-bearing sand layers obtained in step 101 as an example, since the first oil-bearing sand layer has the maximum oil-bearing saturation, the first oil-bearing sand layer is determined as the target oil-bearing sand layer.

[0098] Case three: the oil-bearing sand layer with the oil layer thickness satisfying the first target requirement and the oil-bearing saturation satisfying the second target requirement among the N oil-bearing sand layers is determined as the target oil-bearing sand layer.

[0099] In a possible implementation, the oil layer thickness satisfying the first target requirement can be the maximum oil layer thickness, and the oil saturation satisfying the second target requirement can be the maximum oil saturation. Of course, the oil layer thickness satisfying the first target requirement and the oil saturation satisfying the second target requirement can also be other, which is not limited in the embodiments of the present application. Exemplarily, the oil sand layer with the maximum oil layer thickness and the maximum oil saturation in the N oil sand layers is determined as the target oil sand layer.

[0100] Taking the oil layer thickness of the three oil sand layers obtained in step 101 as an example, since the first oil sand layer has the maximum oil layer thickness and the maximum oil saturation, the first oil sand layer is determined as the target oil sand layer.

[0101] It should be noted that if the target oil reservoir does not have an oil sand layer with an oil layer thickness satisfying the first target requirement and an oil saturation satisfying the second target requirement, the target oil sand layer is determined according to the above case one or case two.

[0102] It should be further noted that the target oil sand layer can also be determined by the technical personnel in the plurality of oil sand layers included in the target oil reservoir.

[0103] In step 104, the inclination angle is adjusted to the second angle, and the well is drilled from the first position to the second position by the second length according to the second angle, to obtain a second section of the oil well, and the second position is located in the target oil sand layer.

[0104] The second angle is in a range of 90 degrees to 95 degrees.

[0105] In a possible implementation, the process of adjusting the inclination angle to the second angle, and drilling the well from the first position to the second position by the second length according to the second angle to obtain the second section of the oil well is as follows: adjusting the inclination angle to the second angle, determining the second length based on the oil layer thickness of the N oil sand layers, the thickness of the N-1 barriers, the target oil sand layer and the second angle, and drilling the well from the first position to the second position by the second length according to the second angle to obtain the second section of the oil well.

[0106] The process of adjusting the inclination angle to the second angle, and determining the second length based on the oil layer thickness of the N oil sand layers, the thickness of the N-1 barriers, the target oil sand layer and the second angle is as follows:

[0107] The first distance from the first position to the target oil sand layer is determined based on the oil layer thickness of the N oil sand layers and the thickness of the N-1 barriers, and the second length L2 is determined according to the following formula (2) based on the second angle and the first distance:

[0108]

[0109] In the above formula (2), X is the first distance and β is the second angle.

[0110] For example, the target oil-bearing sand layer determined in step 103 is the first oil-bearing sand layer. Since the first length determined in step 102 is 24 meters, which has reached the third oil-bearing sand layer of the target reservoir, the first distance is determined to be a value less than the thickness of the target reservoir and greater than the second thickness. The second thickness is the sum of the oil layer thickness of the first oil-bearing sand layer, the oil layer thickness of the second oil-bearing sand layer, the oil layer thickness of the third oil-bearing sand layer, the thickness of the interlayer between the first and second oil-bearing sand layers, and the thickness of the interlayer between the second and third oil-bearing sand layers. For example, if the first distance is 10 meters and the second angle is 95 degrees, the second length L2 is determined based on the first distance, the second angle, and the above formula (2). (meters). That is, drilling 115 meters from the first position at a 95-degree angle to the second position, the second oil layer of the oil well is obtained, and the second position is located in the target oil-bearing sand layer.

[0111] In step 105, the well inclination angle is adjusted to the third angle, and drilling continues from the second position to the third position according to the third angle to obtain the third oil layer of the oil well.

[0112] In one possible implementation, the first angle, the second angle, and the third angle are different angles. The value of the third angle ranges from 86 degrees to 90 degrees.

[0113] In one possible implementation, drilling continues from the second position at a 90-degree angle to the third position, obtaining the third oil-bearing layer of the well. The third position is located within the target oil-bearing sand layer. This application does not limit the length of drilling at the third angle, as long as drilling continues from the second position at the third angle and the reached third position is within the target oil-bearing sand layer.

[0114] For example, drilling continues for 10 meters from the second position to the third position at a third angle to obtain the third oil layer of the oil well, and the third position is located in the target oil-bearing sand layer.

[0115] In step 106, a target oil well is determined based on the first, second, and third oil layers of the oil well, and oil production is carried out based on the target oil well.

[0116] In one possible implementation, the first oil layer of the oil well determined in step 102, the second oil layer of the oil well determined in step 103, and the third oil layer of the oil well determined in step 104 are combined to form a target oil well, and oil production is carried out based on the target oil well.

[0117] like Figure 2Fig. 1 is a schematic diagram of a target oil well developed in a target oil reservoir according to an embodiment of the present application. In the figure, the first section of the oil well is developed at a first angle of 60 degrees for 24 meters, the second section of the oil well is developed at a second angle of 95 degrees for 115 meters, and the third section of the oil well is developed at a third angle of 90 degrees for 5 meters. Figure 2

[0118] It should be noted that the first section of the oil well, the second section of the oil well and the third section of the oil well obtained in actual oil well development are not straight-line oil wells as shown in the figure, but should be oil wells with an arc shape. Figure 2 Figure 2 The figure is only a schematic diagram of an optimal oil well, and does not represent the shape of all developed oil wells. Figure 2

[0119] In a possible implementation, after the target oil well is determined based on the first section of the oil well, the second section of the oil well and the third section of the oil well, the oil layer drilling rate of the target oil well can also be determined. The oil layer drilling rate is used to evaluate the target oil well. The higher the oil layer drilling rate, the better the oil well and the greater the oil production. The lower the oil layer drilling rate, the worse the oil well and the lower the oil production. The determination process of the oil layer drilling rate of the target oil well is as follows.

[0120] The length of the target oil well is determined, the length of the drilled oil layer of the target oil well is determined, and the oil layer drilling rate of the target oil well is determined based on the length of the target oil well and the length of the drilled oil layer of the target oil well.

[0121] The length of the oil well and the length of the drilled oil layer are obtained by measurement by a technician. The ratio of the length of the drilled oil layer of the target oil well to the length of the target oil well is taken as the oil layer drilling rate of the target oil well.

[0122] For example, the length of the target oil well is 144 meters, the length of the drilled oil layer of the target oil well is 130 meters, and the ratio of the length of the drilled oil layer of the target oil well to the length of the target oil well is 130 / 144=0.903, which is determined as the oil layer drilling rate of the target oil well.

[0123] It should be noted that the oil well development method can also run on a server. The embodiment of the present application is only described by taking the oil layer development method running on an electronic device as an example, and is not used to limit the present application.

[0124] In summary, the oil reservoir data of the target oil reservoir is determined based on the oil reservoir data of the target oil reservoir. In the oil well development method, the oil layer thickness and oil saturation of each oil-bearing sand layer of the target oil reservoir are considered when the target oil well is determined. Therefore, the oil production of the target oil well can be improved when the target oil well is developed, and the oil layer drilling rate of the target oil well can be improved.

[0125] ​​​Based on the same inventive concept, this embodiment also provides an oil well development apparatus, such as... Figure 3 As shown, the device includes:

[0126] The acquisition module 301 is used to acquire reservoir data of a target reservoir, which includes N oil-bearing sand layers. The reservoir data includes the oil layer thickness of the N oil-bearing sand layers and the oil saturation of the N oil-bearing sand layers, where N is an integer greater than or equal to 1.

[0127] Drilling module 302 is used to drill a first length to a first position in the target oil reservoir according to the well inclination angle as the first angle, to obtain the first oil layer of the oil well. The first oil layer of the oil well penetrates M oil-bearing sand layers, where M is an integer greater than or equal to 1 and less than or equal to N.

[0128] The determination module 303 is used to determine the target oil-bearing sand layer based on the oil layer thickness and oil saturation of the N oil-bearing sand layers.

[0129] The drilling module 302 is also used to adjust the well inclination angle to a second angle, and drill a second length from the first position to the second position according to the second angle to obtain the second oil layer of the oil well, the second position being located in the target oil-bearing sand layer;

[0130] The drilling module 302 is also used to adjust the well inclination angle to a third angle, and continue drilling from the second position to the third position according to the third angle to obtain the third oil layer of the oil well. The first angle, the second angle and the third angle are different angles.

[0131] The determining module 303 is also used to determine a target oil well based on the first oil layer, the second oil layer and the third oil layer of the oil well, and to carry out oil production based on the target oil well.

[0132] In one possible implementation, the reservoir data also includes the thickness of N-1 interlayers;

[0133] The drilling module 302 is used to determine the first length based on the oil layer thickness of the N oil-bearing sand layers, the thickness of the N-1 interlayers, and the first angle;

[0134] Drill the well to the first position with the well inclination angle as the first angle, and obtain the first section of the oil layer in the target oil reservoir.

[0135] In one possible implementation, the drilling module 302 is used to adjust the well inclination angle to a second angle and determine the second length based on the oil layer thickness of the N oil-bearing sand layers, the thickness of the N-1 interlayers, the target oil-bearing sand layer, and the second angle.

[0136] According to the second angle, drilling from the first position to the second position by the second length, a second section of the oil well is obtained.

[0137] In a possible implementation, the determining module 303 is configured to determine, as the target oil-bearing sand layer, an oil-bearing sand layer in the N oil-bearing sand layers that satisfies a first target requirement on oil layer thickness;

[0138] or, determine, as the target oil-bearing sand layer, an oil-bearing sand layer in the N oil-bearing sand layers that satisfies a second target requirement on oil-bearing saturation;

[0139] or, determine, as the target oil-bearing sand layer, an oil-bearing sand layer in the N oil-bearing sand layers that satisfies the first target requirement on oil layer thickness and the second target requirement on oil-bearing saturation.

[0140] In a possible implementation, the determining module 303 is configured to determine, based on the oil layer thicknesses of the N oil-bearing sand layers and the thicknesses of the N-1 interlayers, a thickness of the target oil reservoir;

[0141] based on the thickness of the target oil reservoir and the first angle, determine the first length L1 according to the following formula:

[0142]

[0143] wherein the α is the first angle, and the A is the thickness of the target oil reservoir.

[0144] In a possible implementation, the determining module 303 is configured to determine, based on the oil layer thicknesses of the N oil-bearing sand layers and the thicknesses of the N-1 interlayers, a first distance from the first position to the target oil-bearing sand layer;

[0145] based on the second angle and the first distance, determine the second length L2 according to the following formula:

[0146]

[0147] wherein the X is the first distance, and the β is the second angle.

[0148] In a possible implementation, the determining module 303 is further configured to determine a length of the target oil well;

[0149] determine a drilled oil layer length of the target oil well;

[0150] based on the length of the oil well and the drilled oil layer length, determine an oil layer drilling rate of the target oil well, the oil layer drilling rate being used for evaluating the target oil well.

[0151] In a possible implementation, the first angle ranges from 60 degrees to 86 degrees, the second angle ranges from 91 degrees to 95 degrees, and the third angle ranges from 86 degrees to 90 degrees.

[0152] In summary, the embodiment of the present application determines the target oil well based on the reservoir data of the target reservoir. Since the oil well development method considers the oil layer thickness and oil saturation of each oil-bearing sand layer of the target reservoir when determining the target oil well, the oil production of the target oil well can be improved, and the oil layer drilling rate of the target oil well can be improved when oil is produced according to the determined target oil well.

[0153] It should be understood that the above Figure 3 The apparatus provided in the embodiments of the present application is only used as an example for the division of the above functional modules in realizing the functions thereof. In actual applications, the above functions can be completed by different functional modules according to requirements, that is, the internal structure of the apparatus is divided into different functional modules to complete all or part of the above described functions. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is described in the method embodiments, which will not be described here.

[0154] All the optional technical solutions described above can be combined to form optional embodiments of the present application, which will not be described one by one here.

[0155] In the example embodiments, a computer readable storage medium is also provided, and the computer readable storage medium stores at least one instruction. The at least one instruction is executed by a processor of an electronic device to implement any of the above oil well development methods.

[0156] Optionally, the computer readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0157] In the example embodiments, a computer program or computer program product is also provided, and the computer program or computer program product stores at least one computer instruction. The at least one computer instruction is loaded and executed by a processor to enable a computer to implement any of the above oil well development methods.

[0158] Those skilled in the art can understand that all or part of the steps of the above embodiments can be completed by hardware, or the program can instruct the related hardware to complete, and the program can be stored in a computer readable storage medium. The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0159] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of developing an oil well, characterized by, The method comprises: obtaining reservoir data of a target reservoir, the target reservoir comprising N oil-bearing layers, the reservoir data comprising oil layer thicknesses of the N oil-bearing layers, thicknesses of N-1 interlayers, and oil-bearing saturations of the N oil-bearing layers, the N being an integer greater than or equal to 1; determining a first length based on the oil layer thicknesses of the N oil-bearing layers, the thicknesses of the N-1 interlayers, and a first angle; drilling in the target reservoir at a deviation angle of the first angle for the first length to a first position to obtain a first section of oil layers of an oil well, the first section of oil layers of the oil well penetrating M oil-bearing layers, the M being an integer greater than or equal to 1 and less than or equal to the N, the first angle being in a range of 60 degrees to 86 degrees; determining a target oil-bearing layer based on the oil layer thicknesses of the N oil-bearing layers and the oil-bearing saturations of the N oil-bearing layers; adjusting the deviation angle to a second angle, drilling from the first position at the second angle for a second length to a second position to obtain a second section of oil layers of the oil well, the second position being located in the target oil-bearing layer, the second angle being in a range of 91 degrees to 95 degrees; adjusting the deviation angle to a third angle, continuing to drill from the second position at the third angle to a third position to obtain a third section of oil layers of the oil well, the third position being located in the target oil-bearing layer, the first angle, the second angle, and the third angle being different angles, the third angle being in a range of 86 degrees to 90 degrees; determining a target oil well based on the first section of oil layers of the oil well, the second section of oil layers of the oil well, and the third section of oil layers of the oil well, and performing oil extraction based on the target oil well.

2. The method of claim 1, wherein, The adjusting the deviation angle to the second angle, drilling from the first position at the second angle for the second length to the second position to obtain the second section of oil layers of the oil well comprises: adjusting the deviation angle to the second angle, determining the second length based on the oil layer thicknesses of the N oil-bearing layers, the thicknesses of the N-1 interlayers, the target oil-bearing layer, and the second angle; drilling from the first position at the second angle for the second length to the second position to obtain the second section of oil layers of the oil well.

3. The method of claim 1, wherein, The determining the target oil-bearing layer based on the oil layer thicknesses of the N oil-bearing layers and the oil-bearing saturations of the N oil-bearing layers comprises: determining, as the target oil-bearing layer, an oil-bearing layer of the N oil-bearing layers that satisfies a first target requirement in oil layer thickness; or, determining, as the target oil-bearing layer, an oil-bearing layer of the N oil-bearing layers that satisfies a second target requirement in oil-bearing saturation; or, determining, as the target oil-bearing layer, an oil-bearing layer of the N oil-bearing layers that satisfies the first target requirement in oil layer thickness and the second target requirement in oil-bearing saturation.

4. The method of claim 1, wherein, The determining the first length based on the oil layer thicknesses of the N oil-bearing layers, the thicknesses of the N-1 interlayers, and the first angle comprises: determining a thickness of the target reservoir based on the oil layer thicknesses of the N oil-bearing layers and the thicknesses of the N-1 interlayers; determining the first length L1 according to the following formula based on the thickness of the target reservoir and the first angle: Wherein, the first angle is the angle of the target oil reservoir, and the A is the thickness of the target oil reservoir. Wherein, the first angle is the angle of the target oil reservoir, and the A is the thickness of the target oil reservoir.

5. The method of claim 2, wherein, adjusting the angle of deviation to a second angle, determining the second length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 barriers, the target oil-bearing sand layer, and the second angle, including: determining a first distance from the first position to the target oil-bearing sand layer based on the oil layer thicknesses of the N oil-bearing sand layers and the thicknesses of the N-1 barriers; determining the second length L2 according to the following formula based on the second angle and the first distance: wherein said X is said first distance, said is said second angle.

6. The method according to any one of claims 1 to 5, characterized in that, After determining the target oil well based on the oil well first section, the oil well second section, and the oil well third section, the method further includes: determining the length of the target oil well; determining the drilled oil layer length of the target oil well; determining the oil layer drilling rate of the target oil well based on the length of the oil well and the drilled oil layer length, the oil layer drilling rate being used to evaluate the target oil well.

7. An oil well development apparatus, characterized by comprising: The device includes: an acquisition module configured to acquire reservoir data of a target reservoir, the target reservoir including N oil-bearing sand layers, the reservoir data including oil layer thicknesses of the N oil-bearing sand layers, thicknesses of N-1 barriers, and oil-bearing saturations of the N oil-bearing sand layers, the N being an integer greater than or equal to 1; a drilling module configured to determine a first length based on the oil layer thicknesses of the N oil-bearing sand layers, the thicknesses of the N-1 barriers, and a first angle, drill into the target reservoir to a first position by a length of the first angle, and obtain an oil well first section, the oil well first section drilling through M oil-bearing sand layers, the M being an integer greater than or equal to 1 and less than or equal to the N, the first angle being in a range of 60 degrees to 86 degrees; a determination module configured to determine a target oil-bearing sand layer based on the oil layer thicknesses of the N oil-bearing sand layers and the oil-bearing saturations of the N oil-bearing sand layers; the drilling module is further configured to adjust the angle of deviation to a second angle, drill into a second position by a length of the second angle from the first position, and obtain an oil well second section, the second position being located in the target oil-bearing sand layer, the second angle being in a range of 91 degrees to 95 degrees; the drilling module is further configured to adjust the angle of deviation to a third angle, continue to drill into a third position from the second position by the third angle, and obtain an oil well third section, the third position being located in the target oil-bearing sand layer, the first angle, the second angle, and the third angle being different angles, the third angle being in a range of 86 degrees to 90 degrees; the determination module is further configured to determine a target oil well based on the oil well first section, the oil well second section, and the oil well third section, and perform oil extraction based on the target oil well.

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