Subsection standard production and acidification combined operation device for deep horizontal well and use method of subsection standard production and acidification combined operation device

Abstract

The invention relates to the technical field of oil and gas well exploitation, in particular to a deep horizontal well segmented standard production and acidification combined operation device and a using method. According to the technical scheme, a vertical well section sampling testing device is connected into a shaft through an oil pipe, a horizontal section sampling testing and acidification device is connected to the lower portion of the shaft through a small-diameter oil pipe, an inner pipe is arranged at one end of an inner cavity of the horizontal section sampling testing and acidification device, an outer pipe is arranged on the outer side of the inner cavity of the horizontal section sampling testing and acidification device, and an upper expansion rubber sleeve is arranged on the outer side of the outer pipe; a formation liquid inlet is located between the two, a storage type tester is arranged in an inner cavity at the tail end, and dynamic production data are tested through the storage type tester; and during acidification, acidizing fluid is reversely injected into the stratum between the upper expansion rubber sleeve and the lower expansion rubber sleeve along the stratum fluid inlet. The method has the beneficial effects that the data of the produced liquid of each well section can be conveniently measured in real time, and the spot test data is reliable; in addition, acidification production increase can be carried out on all well sections, and multiple purposes are achieved through one pipe column.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas well exploitation, and in particular to a deep horizontal well segmented production and acidizing combined operation device and a use method thereof. Background Art

[0002] With the large-scale application of deep horizontal well development technology, the current testing of deep horizontal wells is still dominated by the general production measurement of the whole well section. It is not possible to measure the dynamic production capacity parameters in sections, nor can the production and pressure profiles of the whole well section be obtained, so it is impossible to evaluate and improve the actual production conditions of each well section, especially the effect of the horizontal well segmented fracturing, the perfection of the sections and the potential, and it is even more impossible to calibrate the dynamic production capacity of the sections under different production pressure differences. For old wells, with the changes in the dynamic state of underground mining, it is more necessary to mark the production in sections, test the actual production profile and underground utilization conditions, so as to guide the correct implementation of measures to tap potential, increase efficiency and improve recovery. For existing medium and shallow wells, the method of pumping and measuring the production profile by electric submersible pumps and rod pumping in large sections is also rarely used due to the shortcomings of cumbersome construction, long time consumption, high cost and poor reliability. For deep horizontal wells and deep wells with high deviation, there is no technology and equipment for integrated construction of segmented pumping, production evaluation and acidizing. Therefore, it is necessary to provide a new device which is more convenient and efficient, suitable for different well depths and well conditions, has a high degree of reliability, and can implement production increase measures without changing the tubing after sampling. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned defects in the prior art and provide a deep horizontal well segmented production calibration and acidizing combined device and a method of use. The present invention can not only measure the production data of the segmented and full well sections in real time, and the sampling data is true and reliable; in addition, acidizing and production increase can be carried out in different well sections in a targeted manner, and multiple uses can be achieved with one string.

[0004] The present invention mentions a deep horizontal well segmented production standardization and acidizing combined operation device, and its technical solution is: it includes an oil pipe and a casing, the oil pipe is installed in the casing, wherein the vertical well section pumping device is connected through the oil pipe in the wellbore, the horizontal section pumping and acidizing device is connected below the vertical well section pumping device through the oil pipe and the small-diameter oil pipe, and an expansion packer is installed between the oil pipe and the inner wall of the oil well; an inner pipe is provided at one end of the inner cavity of the pumping body of the horizontal section pumping and acidizing device, an outer pipe is provided on the outside of the pumping body, an upper expansion rubber cylinder is provided on the outside of the outer pipe, a lower expansion rubber cylinder is installed on the outside of the end of the pumping body, and the formation fluid inlet is located between the upper expansion rubber cylinder and the lower expansion rubber cylinder A storage tester is installed in the terminal inner cavity of the horizontal section pumping and acidizing device, and the dynamic production data between the upper expansion rubber cylinder and the lower expansion rubber cylinder are tested by the storage tester; the second power fluid inlet of the horizontal section pumping and acidizing device is connected to the annulus of the inner pipe and the outer pipe, and is connected to the lower end of the vertical well section pumping device through the annulus of the small-diameter oil pipe and the oil pipe, and the liquid pumped by the horizontal section pumping and acidizing device is lifted to the wellhead through the upper nozzle and the upper throat provided in the vertical well section pumping device through the relay; during acidizing, the acidizing fluid is reversely injected into the formation between the upper expansion rubber cylinder and the lower expansion rubber cylinder along the formation fluid inlet, so as to realize the segmented standard production and acidizing linkage.

[0005] Preferably, the above-mentioned vertical well section pumping device includes a pump body, an upper throat pipe, an upper nozzle, a sleeve, a first power fluid inlet, a mixed liquid outlet, a spring, a downward hole, and a leather cup. The first power fluid inlet is provided at the upper part of the inner cavity of the pump body, the lower part of the first power fluid inlet is provided with an upper nozzle, an upper throat pipe is provided below the upper nozzle, and the lower part of the upper throat pipe is connected with the mixed liquid outlet through a diffusion chamber; a sleeve is installed on the outer side of the mixed liquid outlet, and a spring is installed on the lower side of the sleeve, a downward hole is provided on the lower side of the spring, and a leather cup is installed on the lower side of the downward hole.

[0006] Preferably, the above-mentioned horizontal section sampling and acidizing device also includes a diffusion pipe, a lower throat pipe, and a lower nozzle. The outer end of the second power fluid inlet is connected to the annulus of the inner pipe and the outer pipe, the inner end of the second power fluid inlet is connected to the lower nozzle, the front side of the lower nozzle is provided with a lower throat pipe, the front side of the lower throat pipe is provided with a diffusion pipe, and the end of the diffusion pipe is connected to the inner pipe; the inner end of the formation fluid inlet is connected to the front side of the lower nozzle, and the outer end of the formation fluid inlet is connected to the outside of the outer pipe.

[0007] Preferably, an expansion rubber cylinder groove is provided on the outer wall of the outer tube, a pressure transmission hole is provided at the bottom of the expansion rubber cylinder groove, a rubber cylinder extension hole is provided outside the expansion rubber cylinder groove, and an upper expansion rubber cylinder with a convex cross-section is installed in the inner cavity of the expansion rubber cylinder groove.

[0008] Preferably, the cross-section of the above-mentioned lower expansion rubber cylinder is a convex structure, and the lower expansion rubber cylinder is located on the inner side of the lower mounting ring, the upper part of the outer wall of the lower mounting ring is threadedly connected to the outer tube, and the inner wall is in contact with the outer wall of the extraction and testing body. The high-pressure power fluid between the outer tube and the extraction and testing body penetrates into the lower expansion rubber cylinder, causing the lower expansion rubber cylinder to expand outward.

[0009] Preferably, the above-mentioned vertical well section sampling device also includes a leather cup support protrusion and a spring support protrusion, the lower end of the spring is in contact with the spring support protrusion, and a leather cup support protrusion is provided at the lower part of the spring support protrusion for installing the leather cup.

[0010] Preferably, the lower end of the pump body is internally connected to a small-diameter inner pipe joint, and the lower end of the pump body is externally connected to a large-diameter outer pipe joint, the small-diameter inner pipe joint is connected to the inner pipe of the horizontal section pumping and acidizing device through a small-diameter oil pipe; the large-diameter outer pipe joint is connected to the outer pipe of the horizontal section pumping and acidizing device through an oil pipe.

[0011] Preferably, a descending hole is provided on the lower side of the spring supporting protrusion, and the inner end of the descending hole is connected to the annulus between the small-diameter inner pipe joint and the large-diameter outer pipe joint.

[0012] Preferably, an inner protruding ring is provided at the lower end of the sliding sleeve, which is slidably matched with the neck portion of the pump body, and a spring is installed between the lower part of the inner protruding ring and the spring supporting protrusion.

[0013] The method for using the deep horizontal well segmented production and acidizing combined device mentioned in the present invention comprises the following process: 1. The process of staged production is as follows: A vertical section pumping and testing device is connected in the wellbore through an oil pipe, and a horizontal section pumping and testing and acidizing device is connected below the vertical section pumping and testing device through an oil pipe and a small-diameter oil pipe, and an expansion packer is installed between the oil pipe and the inner wall of the oil well, and two expansion packers are clamped at the first section production measurement position, and high-pressure power fluid is injected into the oil pipe. A part of the high-pressure power fluid enters the vertical section pumping and testing device to suck the segmented formation production fluid from the small-diameter oil pipe, and the other part of the power fluid enters the horizontal section pumping and testing and acidizing device through the downhole, the sandwich wall cavity between the oil pipe and the small-diameter oil pipe, and serves as a power source for the opening and sealing of the upper expansion rubber cylinder and the lower expansion rubber cylinder, and also as a power fluid for the lower nozzle; the dynamic production data of the first section production measurement position is tested by a storage tester, and the vertical section pumping and testing device lifts the pumped fluid to the ground along the annular space between the oil pipe and the casing, and the dynamic formation production data of the section under different production pressure differences are obtained by adjusting the injection speed of the ground power fluid; When the test of the first production measurement position is completed, stop the pump and move the string to the next section to continue the sampling test. Repeat the operation in this way to complete the sampling test of all sections. After that, compare and analyze the production measurement data of all sections to find out the sections that need segmented permeability treatment and carry out acidization treatment. 2. The acidification process is as follows: The pipe string is moved to align the horizontal section pumping and acidizing device in the pipe string in the well with the acidizing part to be treated with permeability enhancement, the casing gate on the ground is closed, and the surface pump is started to inject acid into the oil pipe. The acid enters the upper nozzle and the small-diameter inner pipe joint in the vertical section pumping and acidizing device along the oil pipe, and then goes down along the small-diameter oil pipe to the horizontal section pumping and acidizing device, along the inner pipe, the diffuser pipe, and the lower throat pipe, and then goes down in the reverse direction and enters the formation to be acidified through the formation fluid inlet; because the casing gate on the ground is closed, a part of the power fluid goes down along the downhole of the vertical section pumping and acidizing device into the sandwich wall cavity between the oil pipe and the small-diameter oil pipe, and enters the second power fluid inlet of the horizontal section pumping and acidizing device, and after merging with the acid from the inner pipe, it goes down in the reverse direction and enters the formation to be acidified through the formation fluid inlet; after injecting the acid in one section, the pump is stopped and the pipe string is dragged to inject another section, thereby injecting all the sections that need to be acidified.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention can use a single pipe string to perform segmented sampling and standard production and selective segmented acidification transformation treatment on horizontal wells, multi-stage fracturing horizontal wells, and high-angle wells. The segmented standard production of each production section can be performed by dragging the pipe string, realizing segmented standard production and segmented acidification treatment without changing the pipe string. The dynamic production data of each well section can be measured in real time more conveniently, and the real output contribution rate of the oil layer in each well section can be calculated more accurately. The sampling data is authentic and reliable, the operation is simple and practical, and it is economical and efficient. 2. The present invention can be used for the evaluation of the segmented production capacity of horizontal wells after fracturing, and can also be used for the acidification treatment of segmented reservoirs. One trip of tubing can complete segmented production standardization, acidification, etc., and can make a detailed evaluation of the multi-stage fracturing effect of horizontal wells, providing a reliable basis for the implementation of potential tapping and efficiency improvement measures. Compared with the existing technology, the present invention is applicable to a wide range of well conditions, has good reliability and accuracy, and is economical, and is more suitable for production measurement and production increase treatment of directional high-angle oil and gas wells, deep horizontal wells, and multi-stage fracturing horizontal wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall connection schematic diagram of the present invention; Figure 2 It is a connection diagram of the vertical well section sampling device; Figure 3 It is a schematic diagram of the connection between the horizontal section sampling and the acidizing device; Figure 4 yes Figure 3 An enlarged schematic diagram of the installation position of the upper expansion rubber cylinder; In the figure above: tubing 1, casing 2, vertical section pumping device 3, expansion packer 4, small diameter tubing 5, horizontal section pumping and acidizing device 6, wellbore 7, pump body 3.1, upper throat 3.2, upper nozzle 3.3, sliding sleeve 3.4, first power fluid inlet 3.5, mixed fluid outlet 3.6, spring 3.7, downhole 3.8, leather cup 3.9, diffusion chamber 3.10, leather cup support protrusion 3.11, spring support protrusion 3.12, small diameter inner tube Joint 3.13, large diameter outer pipe joint 3.14, inner pipe 6.1, upper expansion rubber cylinder 6.2, sampling body 6.3, diffuser 6.4, outer pipe 6.5, lower throat 6.6, lower nozzle 6.7, second power fluid inlet 6.8, formation fluid inlet 6.9, storage tester 6.10, lower expansion rubber cylinder 6.11, lower mounting ring 6.12, expansion rubber cylinder groove 6.5.1, pressure transmission hole 6.5.2, rubber cylinder extension hole 6.5.3. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0017] Example 1, reference Figure 1-Figure 4 The present invention discloses a deep horizontal well segmented production standardization and acidizing joint device, comprising an oil pipe 1 and a casing 2, wherein the oil pipe 1 is installed in the casing 2, wherein a vertical well section pumping device 3 is connected in a wellbore 7 through the oil pipe 1, and a horizontal section pumping and acidizing device 6 is connected below the vertical well section pumping and acidizing device 3 through the oil pipe 1 and a small-diameter oil pipe 5, and an expansion packer 4 is installed between the oil pipe 1 and the inner wall of the oil well; an inner tube 6.1 is provided at one end of the inner cavity of a pumping body 6.3 of the horizontal section pumping and acidizing device 6, an outer tube 6.5 is provided on the outer side of the pumping body 6.3, an upper expansion rubber cylinder 6.2 is provided on the outer side of the outer tube 6.5, a lower expansion rubber cylinder 6.11 is installed on the outer side of the end of the pumping body 6.3, and a formation fluid inlet 6.9 is located between the upper expansion rubber cylinder 6.2 and the lower expansion rubber cylinder 6.11. A storage tester 6.10 is installed in the inner cavity at the end of the horizontal section pumping and acidizing device 6, and the dynamic production data between the upper expansion rubber cylinder 6.2 and the lower expansion rubber cylinder 6.11 are tested by the storage tester 6.10; the second power fluid inlet 6.8 of the horizontal section pumping and acidizing device 6 is connected to the annulus of the inner pipe 6.1 and the outer pipe 6.5, and is connected to the lower end of the vertical well section pumping device 3 through the annulus of the small diameter oil pipe 5 and the oil pipe 1, and the liquid pumped by the horizontal section pumping and acidizing device 6 is lifted to the wellhead through the upper nozzle 3.3 and the upper throat 3.2 provided in the vertical well section pumping device 3; during acidizing, the acidizing liquid is reversely injected into the formation between the upper expansion rubber cylinder 6.2 and the lower expansion rubber cylinder 6.11 along the formation fluid inlet 6.9, so as to realize the segmented standard production and acidizing combination.

[0018] The storage tester 6.10 is equipped with a temperature sensor, a pressure sensor, etc., and is provided with a memory, which can measure the data of dynamic fluid production of the formation and store it in the memory. The storage tester 6.10 is a prior art and will not be described in detail here.

[0019] Reference Figure 3 The horizontal section sampling and acidizing device 6 mentioned in the present invention also includes a diffusion pipe 6.4, a lower throat pipe 6.6, and a lower nozzle 6.7. The outer end of the second power fluid inlet 6.8 is connected to the annulus of the inner tube 6.1 and the outer tube 6.5, and the inner end of the second power fluid inlet 6.8 is connected to the lower nozzle 6.7. The front side of the lower nozzle 6.7 is provided with a lower throat pipe 6.6, and the front side of the lower throat pipe 6.6 is provided with a diffusion pipe 6.4, and the end of the diffusion pipe 6.4 is connected to the inner tube 6.1; the inner end of the formation fluid inlet 6.9 is connected to the front side of the lower nozzle 6.7, and the outer end of the formation fluid inlet 6.9 is connected to the outside of the outer tube 6.5.

[0020] Reference Figure 4 An expansion rubber cylinder groove 6.5.1 is provided on the outer wall of the outer tube 6.5 mentioned in the present invention, a pressure transmission hole 6.5.2 is provided at the bottom of the expansion rubber cylinder groove 6.5.1, a rubber cylinder extension hole 6.5.3 is provided outside the expansion rubber cylinder groove 6.5.1, and an upper expansion rubber cylinder 6.2 with a convex-shaped cross-section is installed in the inner cavity of the expansion rubber cylinder groove 6.5.1.

[0021] Among them, the cross-section of the above-mentioned lower expansion rubber cylinder 6.11 is a convex-shaped structure, and the lower expansion rubber cylinder 6.11 is located on the inner side of the lower mounting ring 6.12. The upper part of the outer wall of the lower mounting ring 6.12 is threadedly connected to the outer tube 6.5, and the inner wall is in contact with the outer wall of the extraction and testing body 6.3. The high-pressure power fluid between the outer tube 6.5 and the extraction and testing body 6.3 penetrates into the lower expansion rubber cylinder 6.11, causing the lower expansion rubber cylinder 6.11 to expand outward.

[0022] Reference Figure 2 The vertical well section pumping device 3 mentioned in the present invention comprises a pump body 3.1, an upper throat pipe 3.2, an upper nozzle 3.3, a sleeve 3.4, a first power fluid inlet 3.5, a mixed liquid outlet 3.6, a spring 3.7, a downhole 3.8, and a leather cup 3.9. A first power fluid inlet 3.5 is provided at the upper part of the inner cavity of the pump body 3.1, an upper nozzle 3.3 is provided at the lower part of the first power fluid inlet 3.5, an upper throat pipe 3.2 is provided below the upper nozzle 3.3, and the lower part of the upper throat pipe 3.2 is connected to the mixed liquid outlet 3.6 through a diffusion chamber 3.10; a sleeve 3.4 is arranged on the outer side of the mixed liquid outlet 3.6, and a spring 3.7 is installed on the lower side of the sleeve 3.4, a downhole 3.8 is provided on the lower side of the spring 3.7, and a leather cup 3.9 is installed on the lower side of the downhole 3.8.

[0023] The vertical well section sampling device 3 further comprises a leather cup support protrusion 3.11 and a spring support protrusion 3.12. The lower end of the spring 3.7 contacts the spring support protrusion 3.12. The lower part of the spring support protrusion 3.12 is provided with a leather cup support protrusion 3.11 for installing a leather cup 3.9.

[0024] The lower end of the pump body 3.1 is internally connected to a small-diameter inner pipe joint 3.13, and the lower end of the pump body 3.1 is externally connected to a large-diameter outer pipe joint 3.14. The small-diameter inner pipe joint 3.13 is connected to the inner pipe 6.1 of the horizontal section pumping and acidizing device 6 through a small-diameter oil pipe 5; the large-diameter outer pipe joint 3.14 is connected to the outer pipe 6.5 of the horizontal section pumping and acidizing device 6 through an oil pipe 1.

[0025] A descending hole 3.8 is provided at the lower side of the spring support protrusion 3.12, and the inner end of the descending hole 3.8 is connected to the annular space between the small-diameter inner pipe joint 3.13 and the large-diameter outer pipe joint 3.14.

[0026] The lower end of the sliding sleeve 3.4 is provided with an inner protruding ring, which is slidably matched with the neck portion of the pump body 3.1, and a spring 3.7 is installed between the lower part of the inner protruding ring and the spring supporting protrusion 3.12.

[0027] The method for using the deep horizontal well segmented production and acidizing combined device mentioned in the present invention comprises the following process: 1. The process of staged production is as follows: A vertical well section pumping device 3 is connected in the wellbore 7 through the oil pipe 1, and a horizontal section pumping and acidizing device 6 is connected below the vertical well section pumping device 3 through the oil pipe 1 and the small diameter oil pipe 5, and an expansion packer 4 is installed between the oil pipe 1 and the inner wall of the oil well, and two expansion packers 4 are stuck in the first section production measurement position, and high-pressure power fluid is injected into the oil pipe 1. A part of the high-pressure power fluid enters the vertical well section pumping device 3 to suck the segmented formation production fluid from the small diameter oil pipe 5, and the other part of the power fluid is discharged through the downhole 3.8, the oil pipe 1 and the horizontal section pumping and acidizing device 6. The horizontal section pumping and acidizing device 6 is inserted into the wall cavity between the small-diameter oil pipes 5, and serves as the power source for the upper expansion rubber cylinder 6.2 and the lower expansion rubber cylinder 6.11, and also as the power fluid of the lower nozzle 6.7; the dynamic production data of the first section production measurement position is tested by the storage tester 6.10, and the vertical well section pumping and testing device 3 lifts the extracted fluid to the ground along the annular space between the oil pipe 1 and the casing 2, and the injection speed of the ground power fluid is adjusted to obtain the data of the dynamic production fluid of the formation at this section under different production pressure differences; When the test of the first production measurement position is completed, stop the pump and move the string to the next section to continue the sampling test. Repeat the operation in this way to complete the sampling test of all sections. After that, compare and analyze the production measurement data of all sections to find out the sections that need segmented permeability treatment and carry out acidization treatment. 2. The acidification process is as follows: Move the pipe string to align the horizontal section sampling and acidizing device 6 in the pipe string in the well with the acidizing part to be treated with permeability enhancement, close the casing gate on the ground, start the surface pump to inject acid into the oil pipe 1, and the acid enters the upper nozzle 3.3 and the small-diameter inner pipe joint 3.13 in the vertical well section sampling and acidizing device 3 along the oil pipe 1, and then goes down along the small-diameter oil pipe 5 to the horizontal section sampling and acidizing device 6, and goes down along the inner pipe 6.1, the diffusion pipe 6.4, and the lower throat pipe 6.6, and then goes down in the reverse direction and enters the acidizing part through the formation fluid inlet 6.9. Since the casing gate on the ground is closed, a part of the power fluid flows downward along the downhole 3.8 of the vertical section pumping device 3 into the sandwich wall cavity between the oil pipe 1 and the small diameter oil pipe 5, and enters the second power fluid inlet 6.8 of the horizontal section pumping and acidizing device 6, and after merging with the acid liquid from the inner pipe 6.1, it flows downward in the reverse direction and enters the formation to be acidified through the formation fluid inlet 6.9; after injecting the acid liquid in one section, the pump is stopped and the pipe string is dragged to inject into another section, thereby injecting all the sections that need to be acidified.

[0028] In addition, after the acid liquid reacts with the formation for a period of time, the casing gate on the ground is opened, and the residual acid liquid is sucked out by segmented jets to the ground, completing the segmented acidification drainage process.

[0029] The above are only some preferred embodiments of the present invention. Any person skilled in the art may modify the above technical solutions or modify them into equivalent technical solutions. Therefore, the corresponding simple modifications or equivalent transformations made according to the technical solutions of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A deep horizontal well segmented production and acidizing combined device, comprising an oil pipe (1) and a casing (2), wherein the oil pipe (1) is installed in the casing (2), and wherein: A vertical section pumping device (3) is connected in the wellbore (7) via an oil pipe (1); a horizontal section pumping and acidizing device (6) is connected below the vertical section pumping device (3) via an oil pipe (1) and a small diameter oil pipe (5); and an expansion packer (4) is installed between the oil pipe (1) and the inner wall of the oil well; an inner tube (6.1) is provided at one end of the inner cavity of a pumping body (6.3) of the horizontal section pumping and acidizing device (6); an outer tube (6.5) is provided on the outer side of the pumping body (6.3); an upper expansion rubber cylinder (6.2) is provided on the outer side of the outer tube (6.5); a lower expansion rubber cylinder (6.11) is installed on the outer side of the end of the pumping body (6.3); a formation fluid inlet (6.9) is located between the upper expansion rubber cylinder (6.2) and the lower expansion rubber cylinder (6.11); and a sealing ring (6.5) is provided in the inner cavity of the end of the horizontal section pumping and acidizing device (6). A storage tester (6.10) is used to test the dynamic production data between the upper expansion rubber cylinder (6.2) and the lower expansion rubber cylinder (6.11); the second power fluid inlet (6.8) of the horizontal section pumping and acidizing device (6) is connected to the annulus of the inner tube (6.1) and the outer tube (6.5), and is connected to the lower end of the vertical section pumping device (3) through the annulus of the small diameter oil pipe (5) and the oil pipe (1); the liquid pumped by the horizontal section pumping and acidizing device (6) is lifted to the wellhead through the upper nozzle (3.3) and the upper throat (3.2) provided in the vertical section pumping device (3); during acidizing, the acidizing fluid is reversely injected into the formation between the upper expansion rubber cylinder (6.2) and the lower expansion rubber cylinder (6.11) along the formation fluid inlet (6.9), so as to realize the segmented standard production and acidizing combination; The vertical well section pumping device (3) comprises a pump body (3.1), an upper throat pipe (3.2), an upper nozzle (3.3), a sleeve (3.4), a first power fluid inlet (3.5), a mixed fluid outlet (3.6), a spring (3.7), a downhole (3.8), and a leather cup (3.9). The first power fluid inlet (3.5) is provided at the upper part of the inner cavity of the pump body (3.1), the upper nozzle (3.3) is provided at the lower part of the first power fluid inlet (3.5), the upper throat pipe (3.2) is provided below the upper nozzle (3.3), and the lower part of the upper throat pipe (3.2) is connected to the mixed fluid outlet (3.6) through a diffusion chamber (3.10); a sleeve (3.4) is arranged outside the mixed fluid outlet (3.6), a spring (3.7) is installed at the lower side of the sleeve (3.4), a downhole (3.8) is provided at the lower side of the spring (3.7), and a leather cup (3.9) is installed at the lower side of the downhole (3.8).

2. The deep horizontal well segmented production and acidizing combined device according to claim 1 is characterized by: The horizontal section sampling and acidizing device (6) further comprises a diffusion pipe (6.4), a lower throat pipe (6.6), and a lower nozzle (6.7); the outer end of the second power fluid inlet (6.8) is connected to the annulus of the inner pipe (6.1) and the outer pipe (6.5); the inner end of the second power fluid inlet (6.8) is connected to the lower nozzle (6.7); the lower throat pipe (6.6) is provided on the front side of the lower nozzle (6.7); the diffusion pipe (6.4) is provided on the front side of the lower throat pipe (6.6); the end of the diffusion pipe (6.4) is connected to the inner pipe (6.1); the inner end of the formation fluid inlet (6.9) is connected to the front side of the lower nozzle (6.7); and the outer end of the formation fluid inlet (6.9) is connected to the outside of the outer pipe (6.5).

3. The deep horizontal well segmented production and acidizing combined device according to claim 2 is characterized by: An expansion rubber cylinder groove (6.5.1) is provided on the outer wall of the outer tube (6.5), a pressure transmission hole (6.5.2) is provided at the bottom of the expansion rubber cylinder groove (6.5.1), a rubber cylinder extension hole (6.5.3) is provided outside the expansion rubber cylinder groove (6.5.1), and an upper expansion rubber cylinder (6.2) with a convex cross-section is installed in the inner cavity of the expansion rubber cylinder groove (6.5.1).

4. The deep horizontal well segmented production and acidizing combined device according to claim 3 is characterized by: The cross section of the lower expansion rubber cylinder (6.11) is a convex-shaped structure, and the lower expansion rubber cylinder (6.11) is located on the inner side of the lower mounting ring (6.12). The upper part of the outer wall of the lower mounting ring (6.12) is threadedly connected to the outer tube (6.5), and the inner wall is in contact with the outer wall of the extraction and testing body (6.3). The high-pressure power fluid between the outer tube (6.5) and the extraction and testing body (6.3) penetrates into the lower expansion rubber cylinder (6.11), causing the lower expansion rubber cylinder (6.11) to expand outward.

5. The deep horizontal well segmented production and acidizing combined device according to claim 4 is characterized by: The vertical well section sampling device (3) further comprises a leather cup support protrusion (3.11) and a spring support protrusion (3.12); the lower end of the spring (3.7) contacts the spring support protrusion (3.12); and a leather cup support protrusion (3.11) is provided at the lower part of the spring support protrusion (3.12) for mounting the leather cup (3.9).

6. The deep horizontal well segmented production and acidizing combined device according to claim 5 is characterized by: The lower end of the pump body (3.1) is internally connected to a small-diameter inner pipe joint (3.13), and the lower end of the pump body (3.1) is externally connected to a large-diameter outer pipe joint (3.14); the small-diameter inner pipe joint (3.13) is connected to an inner pipe (6.1) of a horizontal section pumping and acidizing device (6) via a small-diameter oil pipe (5); and the large-diameter outer pipe joint (3.14) is connected to an outer pipe (6.5) of the horizontal section pumping and acidizing device (6) via an oil pipe (1).

7. The deep horizontal well segmented production and acidizing combined device according to claim 6 is characterized by: A descending hole (3.8) is provided on the lower side of the spring support protrusion (3.12), and the inner end of the descending hole (3.8) is connected to the annular space between the small-diameter inner pipe joint (3.13) and the large-diameter outer pipe joint (3.14).

8. The deep horizontal well segmented production and acidizing combined device according to claim 7 is characterized by: The lower end of the sliding sleeve (3.4) is provided with an inner protruding ring which is slidably matched with the neck portion of the pump body (3.1), and a spring (3.7) is installed between the lower part of the inner protruding ring and the spring supporting protrusion (3.12).

9. The method for using the deep horizontal well segmented production and acidizing combined device according to claim 8 is characterized by: The process includes:

1. The process of staged production is as follows: A vertical well section pumping device (3) is connected in the wellbore (7) via an oil pipe (1), and a horizontal section pumping and acidizing device (6) is connected below the vertical well section pumping device (3) via an oil pipe (1) and a small diameter oil pipe (5), and an expansion packer (4) is installed between the oil pipe (1) and the inner wall of the oil well, and two expansion packers (4) are stuck in the first section production measurement position, and high-pressure power fluid is injected into the oil pipe (1). A part of the high-pressure power fluid enters the vertical well section pumping device (3) to suck out the segmented formation production fluid from the small diameter oil pipe (5), and the other part of the power fluid is discharged through the downhole (3.8), The horizontal section pumping and acidizing device (6) is inserted into the wall cavity between the oil pipe (1) and the small diameter oil pipe (5), and serves as the power source for the upper expansion rubber cylinder (6.2) and the lower expansion rubber cylinder (6.11), and also as the power fluid of the lower nozzle (6.7); the dynamic production data of the first section production measurement position is tested by the storage tester (6.10), and the vertical well section pumping and testing device (3) lifts the extracted fluid to the ground along the annular space between the oil pipe (1) and the casing (2), and the injection speed of the ground power fluid is adjusted to obtain the data of the dynamic production fluid of the formation at the section under different production pressure differences; When the test of the first production measurement position is completed, stop the pump and move the string to the next section to continue the sampling test. Repeat the operation in this way to complete the sampling test of all sections. After that, compare and analyze the production measurement data of all sections to find out the sections that need segmented permeability treatment and carry out acidization treatment.

2. The acidification process is as follows: The pipe string is moved to align the horizontal section sampling and acidizing device (6) in the pipe string in the well with the acidizing part to be treated for permeability enhancement, the casing gate on the ground is closed, and the surface pump is started to inject acid into the oil pipe (1). The acid flows along the oil pipe (1) into the upper nozzle (3.3) and the small-diameter inner pipe joint (3.13) in the vertical section sampling and acidizing device (3), and then flows downward along the small-diameter oil pipe (5) into the horizontal section sampling and acidizing device (6), and then flows downward along the inner pipe (6.1), the diffusion pipe (6.4), and the lower throat pipe (6.6), and then flows downward in the reverse direction through the formation fluid inlet (6.9) into the formation fluid. into the formation to be acidified; since the casing gate on the ground is closed, a part of the power fluid flows downward along the downhole (3.8) of the vertical section pumping and testing device (3) into the sandwich wall cavity between the oil pipe (1) and the small diameter oil pipe (5), and enters the second power fluid inlet (6.8) of the horizontal section pumping and acidizing device (6), and after being combined with the acid liquid from the inner pipe (6.1), it flows downward in the reverse direction and enters the formation to be acidified through the formation fluid inlet (6.9); after the acid liquid in one section is injected, the pump is stopped and the pipe string is dragged to inject into another section, thereby injecting all the sections to be acidified.

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