A mud filtration device suitable for hydraulically assisted extension of large-reach wells

Abstract

The present invention relates to the technical field of oil and gas exploration and exploitation, and discloses a mud filtering device suitable for hydraulically assisted extension of large-displacement wells, comprising a mounting base, a reflux inner cylinder is sleeved at the inner center of the mounting base, a slag separating cone is sleeved on the outer wall of the middle part of the mounting base, and a slag discharge cylinder cover is arranged at the bottom of the slag separating cone and is sleeved with the outer wall of the bottom of the mounting base; the present invention protects components, accelerates filtration, and improves equipment durability and efficiency by buffering mud impact, reducing pressure and preventing erosion, and guiding spiral flow; it also utilizes a combination of related components to timely clean up retained impurities, ensure filtration accuracy and progress, and maintain stable operation of the filter; and is equipped with sensors and monitoring systems to collect and analyze usage time data, calculate and compare filtration abnormality coefficients, automatically judge the filtration status, and automatically discharge slag when abnormal, thereby reducing the burden on personnel and improving the stability and efficiency of production operations.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas exploration and exploitation, and in particular to a mud filtering device suitable for hydraulically assisted extension of large-displacement wells. Background Art

[0002] As conventional oil and gas resources gradually decrease, in order to improve the recovery rate of oil and gas, companies have begun to turn their attention to areas with more complex geological conditions and wider reservoir distribution. The extended reach well technology can effectively increase the contact area between the wellbore and the reservoir, allowing the development of reservoirs that were previously difficult to exploit. Compared with the traditional multi-well development method, the extended reach well can reduce the number of wellheads, especially in environments with high construction costs such as offshore platforms. One extended reach well can replace multiple conventional wells, reducing the construction cost and operating cost of the offshore platform (including equipment maintenance, personnel transportation, etc.). At the same time, in onshore oil fields, the extended reach well can also reduce the construction of ground facilities, reduce land occupation and environmental protection costs.

[0003] In combination with the above content, it should be explained that:

[0004] A Chinese patent with announcement number CN204532176U discloses a spiral mud filter, which is a conical filter structure formed by an outer support rod, filter strips and a base. However, during actual use, mud filter impurities are easily adhered between the outer support rod and the filter strip, and along with the influence of the mud flow trajectory, the surface of the conical filter structure is continuously and gradually blocked.

[0005] A Chinese patent with announcement number CN215444382U discloses a filter and a mud pump, which uses an inner ring as a middle partition structure to prevent the mud from contacting the sealing component, prevent the oil-based mud from corroding the sealing component, and effectively prevent the mud from leaking. However, during actual use, the filter is more about how to separate impurities in the mud. The damage to the filter's sealing structure is more due to the internal pressure difference overload caused by the accumulation and blockage of internal impurities, causing interference with surrounding components.

[0006] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0007] The object of the present invention is to provide a mud filtering device suitable for hydraulically assisted extension of large-displacement wells to solve the problems raised.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mud filtering device suitable for hydraulically assisted extension of a large-displacement well, comprising a mounting base, a return inner cylinder is sleeved at the center of the mounting base, a slag separation cone is sleeved on the outer wall of the middle part of the mounting base, a slag discharge cylinder cover sleeved with the outer wall of the bottom of the mounting base is arranged at the bottom of the slag separation cone, a semi-arc top cover is arranged at the top of the mounting base, an upper ring frame and a lower ring frame are arranged inside the slag discharge cylinder cover, and an external drive box is arranged between the upper ring frame and the lower ring frame;

[0009] A particle capture sensor facing the slag discharge tube cover is arranged on the inner wall of the slag separating cone disk, and a mud flow sensor is embedded in the inner wall at the top of the reflux inner tube. The particle capture sensor is used to collect the pressure value of retained particles inside the slag separating cone disk and the slag discharge tube cover, and the mud flow sensor is used to collect the high-quality slurry delivery value of the slurry passing through the reflux inner tube, and the retained particle pressure value and the high-quality slurry delivery value are sent to the database of the supervision center to form a filtration supervision system.

[0010] Furthermore, an inner sleeve is provided at the bottom center of the mounting base, external injection valves are provided through the outer walls at both ends of the mounting base, and offset anti-impact plates facing the external injection valves are provided on the outer walls at both ends of the inner sleeve, and multiple groups of side channels connected to the slag separating cone disks are provided through the outer periphery of the middle part of the mounting base.

[0011] Furthermore, the bottom of the reflux inner cylinder is sleeved inside the inner sleeve, and a conical separation cylinder cover located above the side channel is provided on the outer wall of the top of the reflux inner cylinder. A supporting sleeve frame is provided on the top of the inner sleeve. The mud flow sensor is used to perform real-time statistics on the total amount of mud that has been filtered within a time threshold. The conical separation cylinder cover is designed to be a conical structure that is wide at the top and narrow at the bottom.

[0012] Furthermore, a limiting ring which is sleeved with the outer wall of the mounting base is provided on the bottom inner wall of the slag separating cone disk, a reinforcing rib which is attached to the outer wall of the mounting base and connected to the inner wall of the slag separating cone disk is provided on the top of the limiting ring, and the reinforcing rib is connected to the outer wall of the frame between the side channels, and an inner cone ring which is clamped with the inner wall of the bottom of the side channel is provided on the bottom inner wall of the slag separating cone disk, and the particle capture sensor is used for collecting data on the retained accumulation volume of large particle impurities which are intercepted and filtered in the upwelling mud within a time threshold.

[0013] Furthermore, an inner sleeve ring which is sleeved with the outer wall of the mounting base is arranged inside the slag discharge barrel cover, and multiple groups of partitions are arranged between the inner sleeve ring and the slag discharge barrel cover, and the upper ring frame and the lower ring frame are symmetrically sleeved on the upper and lower sections of the partitions.

[0014] Furthermore, annular guide grooves are recessed on the inner wall of the slag discharge barrel cover and the outer wall of the inner sleeve, an inner gear ring is sleeved on the inner wall of the upper ring frame, and the inner ring body of the inner gear ring is sleeved in the annular guide groove of the slag discharge barrel cover, multiple groups of upper sealing plates are provided on the inner side of the inner gear ring, and a driven ring sleeved in the annular guide groove on the inner sleeve ring is provided on the inner side wall of the upper sealing plate, the lower ring frame has the same structure as the upper ring frame, and a lower sealing plate staggered with the upper sealing plate is provided on the inner side of the lower ring frame.

[0015] Furthermore, a clamping ring which is sleeved with the inner wall of the top of the mounting base is provided at the bottom edge of the semi-arc top cover, a lower sinker filter ring facing the supporting sleeve is provided inside the clamping ring, a metal ring connected with the supporting sleeve is provided on the inner side of the lower sinker filter ring, an upper filter ring which is clamped between the reflux inner cylinder and the semi-arc top cover is provided above the lower sinker filter ring, the inner side of the upper filter ring is locked with the top of the supporting sleeve by a fastener, and an external valve is provided through the top of the semi-arc top cover.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention uses an installation base with an offset anti-impact plate, an inner sleeve and other structures, and uses an inclined plate body, an annular cavity and a spiral guide to effectively buffer mud impact, reduce pressure and prevent erosion, and guide the spiral flow of mud, which not only protects key components of the equipment, but also accelerates contact with the filter ring to promote filtration, thereby improving filtration efficiency and equipment durability.

[0018] 2. The present invention also intercepts impurities in the mud in steps, and gradually filters from coarse particles to fine particles, thereby ensuring filtration accuracy, improving the quality of mud purification, and meeting the needs of subsequent processes for high-quality mud. The S-shaped flow space and small static cavity composed of the side channel, slag separation cone disk, slag discharge tube cover and inner cone ring are combined, and the rotation of the sealing plate is controlled by an external drive box to realize the opening and closing of the small static cavity. It can timely clean up the retained and accumulated impurities, avoid the clogging of filter residues affecting the filtration process, and maintain the stable and continuous operation of the filter.

[0019] 3. The present invention is equipped with a particle capture sensor and a mud flow sensor, combined with a filtration monitoring system to collect and analyze usage time data, calculate the filtration coefficient and compare it with the preset value, automatically judge the filtration status, and generate a cleaning signal in time when an abnormality occurs, and start the control plan to automatically discharge slag, which greatly reduces the workload of supervisors, ensures efficient and accurate operation of the filter, reduces production interruptions or quality problems caused by filtration abnormalities, and improves the overall production operation stability and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the installation base of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the mounting base and the reflux inner cylinder of the present invention;

[0024] Figure 4 It is a schematic diagram of the explosion structure of the slag discharge tube cover of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the upper ring frame and the upper sealing plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the slag-separating cone disk of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the semi-arc top cover of the present invention.

[0028] Figure numerals: 1. Mounting base; 101. Inner sleeve; 102. External injection valve; 103. Offset impact plate; 104. Side channel; 2. Slag discharge cylinder cover; 201. Partition; 202. Inner sleeve ring; 203. External drive box; 204. Upper ring frame; 205. Inner gear ring; 206. Upper sealing plate; 207. Lower ring frame; 3. Slag separation cone disk; 301. Inner cone ring; 302. Limiting ring; 4. Semi-arc top cover; 401. Upper filter ring; 402. Retaining ring; 403. Lower filter ring; 5. Reflux inner cylinder; 501. Conical separation cylinder cover. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1 - Figure 7As shown, this embodiment is a mud filtering device suitable for hydraulically assisted extension of large displacement wells, including a mounting base 1, a return inner cylinder 5 is sleeved in the center of the inner part of the mounting base 1, a slag separating cone disk 3 is sleeved on the outer wall of the middle part of the mounting base 1, a slag discharge barrel cover 2 which is sleeved with the outer wall of the bottom of the mounting base 1 is arranged at the bottom of the slag separating cone disk 3, a semi-arc top cover 4 is arranged on the top of the mounting base 1, an upper ring frame 204 and a lower ring frame 207 are arranged inside the slag discharge barrel cover 2, and an external drive box 203 is arranged between the upper ring frame 204 and the lower ring frame 207.

[0031] The mounting base 1 is connected to the mud pipeline through the external injection valve 102, so that the pipeline cooperates to guide the mud into the inside of the filter. When the mud enters the inside of the mounting base 1 along the external injection valve 102, the mud first contacts the offset anti-impact plate 103, and is influenced by the inclined structure of the offset anti-impact plate 103, so that the mud is guided to flow along the annular cavity between the mounting base 1 and the inner sleeve 101.

[0032] A spiral upward guide frame is provided on the inner wall of the annular cavity, thereby guiding the mud to spirally surge in the annular cavity, and buffering, decompression and anti-erosion protection of the reflux inner tube 5 are achieved through the offset anti-impact plate 103 and the inner sleeve 101, and the spiral flow of the mud is guided, the contact between the mud and the lower filter ring 403 is promoted, and the mud filtration is accelerated.

[0033] An inner sleeve 101 is arranged at the bottom center of the mounting base 1, and external injection valves 102 are arranged through the outer walls at both ends of the mounting base 1, and offset anti-impact plates 103 facing the external injection valves 102 are arranged on the outer walls at both ends of the inner sleeve 101, and a plurality of side channels 104 connected to the slag separating cone disk 3 are arranged through the outer periphery of the middle part of the mounting base 1, and the bottom of the reflux inner cylinder 5 is sleeved inside the inner sleeve 101, and a conical separation-promoting cylinder cover 501 located above the side channel 104 is arranged on the outer wall of the top of the reflux inner cylinder 5, and a supporting sleeve frame is arranged on the top of the inner sleeve 101. The conical separation-promoting cylinder cover 501 is designed as a conical structure that is wide at the top and narrow at the bottom.

[0034] During the upward flow of the slurry along the spiral in the annular cavity, the slurry passes through the side channel 104, and part of the slurry is guided along the side channel 104 into the slag separation cone 3 and the slag discharge barrel cover 2. When the excess slurry continues to flow upward, it is guided by the conical separation-promoting barrel cover 501, so that the slurry is blocked by the conical separation-promoting barrel cover 501 and then biased toward the clamping ring 402 and the lower filter ring 403. Part of the slurry passes through the lower filter ring 403, and the impurity particles that are filtered and intercepted are diverted along the surface of the lower filter ring 403, and part of the slurry moves up along the inclined surface of the lower filter ring 403.

[0035] After contacting the reflux inner tube 5, it continues to flow slowly between the reflux inner tube 5 and the lower filter ring 403, and is accompanied by subsequent continuous retention and accumulation, causing the impurity particles in this area to slide down along the reflux inner tube 5, and flow on the top slope of the conical promotion tube cover 501 toward the side channel 104. During this process, some impurity particles are entrained by the continuously upwelling mud and contact the lower filter ring 403 again, while some are impacted and rolled to the side channel 104 area.

[0036] A limiting ring 302 is arranged on the inner wall of the bottom of the slag-separating cone disk 3 and is sleeved on the outer wall of the mounting base 1. A reinforcing rib is arranged on the top of the limiting ring 302 and is attached to the outer wall of the mounting base 1 and connected to the inner wall of the slag-separating cone disk 3. The reinforcing rib is connected to the outer wall of the frame body between the side channel 104. An inner cone ring 301 is arranged on the inner wall of the bottom of the slag-separating cone disk 3 and is clamped with the inner wall of the bottom of the side channel 104.

[0037] Part of the impurity particles that are initially intercepted in the mud and the impurity particles that are retained and then filtered again by backflow gradually approach the side channel 104 under continuous accumulation, while only part of the mud exists inside the side channel 104, and the side channel 104, the slag cone 3 and the inside of the slag discharge tube cover 2 form a static total cavity, combined with the unloading force of the reflux channel, so that the filterable mud passes through the lower filter ring 403;

[0038] The intercepted impurity particles are continuously accumulated and, under the guidance of the inner cone ring 301 for the mud, they gradually approach the static total cavity. The inner cone ring 301 is located below the conical separation cylinder cover 501, forming an S-shaped structure for the circulation of local space. The particle impurities are continuously discharged and accumulated through the right opening on the S, and the filtered high-quality mud passes through the top of the S shape into the reflux inner cylinder 5.

[0039] The mud passing through the lower filter ring 403 is intercepted by the upper filter ring 401 and further passes through finer impurity particles, and a reflux pipe penetrating the top of the mounting base 1 and connected with the top of the slag cone 3 may be provided on the inner wall of the clamping ring 402, which is used to guide the fine particles intercepted by the upper filter ring 401 into the static total cavity, and the mud passing through the upper filter ring 401 is marked as high-quality mud, and when it surges over the top of the reflux inner tube 5, it enters the reflux inner tube 5 and is further transported to the next step.

[0040] An inner sleeve ring 202 is arranged inside the slag discharge barrel cover 2 and is sleeved on the outer wall of the mounting base 1. A plurality of partition plates 201 are arranged between the inner sleeve ring 202 and the slag discharge barrel cover 2. An upper ring frame 204 and a lower ring frame 207 are symmetrically sleeved on the upper and lower sections of the partition plates 201. The partition plates 201 divide the space between the slag discharge barrel cover 2 and the inner sleeve ring 202 into a plurality of small static cavities. The tops of some small static cavities are separated by upper sealing plates 206, and the bottoms of the small static cavities are connected to the outside world. The bottom of the slag discharge barrel cover 2 is connected to an external impurity collection device, and the bottoms of some small static cavities are separated by lower sealing plates, and the tops are connected to the static total cavity. The particulate impurities retained in the static total cavity continue to precipitate and fill up the small static cavities opened on the tops step by step.

[0041] Annular guide grooves are recessed on the inner wall of the slag discharge barrel cover 2 and the outer wall of the inner sleeve 101, an inner gear ring 205 is sleeved on the inner wall of the upper ring frame 204, and the inner ring body of the inner gear ring 205 is sleeved in the annular guide groove of the slag discharge barrel cover 2, multiple groups of upper sealing plates 206 are arranged on the inner side of the inner gear ring 205, and a driven ring sleeved in the annular guide groove on the inner sleeve ring 202 is arranged on the inner wall of the upper sealing plate 206, the lower ring frame 207 has the same structure as the upper ring frame 204, and a lower sealing plate staggered with the upper sealing plate 206 is arranged on the inner side of the lower ring frame 207.

[0042] A clamping ring 402 which is sleeved with the inner wall of the top of the mounting base 1 is provided on the bottom edge of the semi-arc top cover 4, a lower sinker filter ring 403 facing the supporting sleeve is provided inside the clamping ring 402, a metal ring connected with the supporting sleeve is provided inside the lower sinker filter ring 403, an upper filter ring 401 which is clamped between the reflux inner tube 5 and the semi-arc top cover 4 is provided above the lower sinker filter ring 403, the inner side of the upper filter ring 401 is locked with the top of the supporting sleeve by fasteners, and an external valve is provided through the top of the semi-arc top cover 4.

[0043] Embodiment 2: This embodiment is a mud filtration device suitable for hydraulically assisted extension of a large-reach well, comprising a particle capture sensor facing the slag discharge tube cover 2 arranged on the inner wall of the slag separation cone 3, and a mud flow sensor embedded in the inner wall of the top of the reflux inner tube 5;

[0044] The particle capture sensor is used to collect the pressure value of retained particles inside the slag separation cone 3 and the slag discharge tube cover 2. The particle capture sensor is used to collect data on the retained accumulation volume of large particle impurities that are intercepted and filtered in the upwelling mud within the time threshold. The mud flow sensor is used to collect the high-quality slurry delivery value of the mud passing through the reflux inner tube 5. The mud flow sensor is used to make real-time statistics on the total amount of mud that has been filtered within the time threshold, and send the retained particle pressure value and the high-quality slurry delivery value to the database of the supervision center to form a filtration supervision system.

[0045] The filter monitoring system collects data for a period of time during the use of the filter, marks the period as a time threshold, and summarizes the data collected by each group of sensors within the time threshold and sends it to the database of the monitoring center;

[0046] The particle capture sensor is specifically one of a laser particle size analyzer sensor and an ultrasonic sensor, but is not limited thereto. It is replaced and assembled according to actual use needs and the budget cost of the device, and is installed on the inner wall of the top of the slag cone 3 and close to the reinforcement rib;

[0047] The mud flow sensor is specifically one of an electromagnetic flowmeter sensor, a turbine flowmeter sensor and a vortex flowmeter sensor, but is not limited thereto. It is replaced and assembled according to actual use needs and device budget costs, and is specifically installed on the inner ring wall at the top of the reflux inner tube 5.

[0048] After obtaining the retained particle pressure value and the high-quality slurry delivery value, the database marks the retained particle pressure value and the high-quality slurry delivery value as ZL and YS respectively, and uses the formula The filter coefficient R is obtained, where q and w are the proportional coefficients of the retained particle pressure value ZL and the high-quality slurry delivery value YS, respectively, q>w>0, and the pre-stored preset filter coefficient Ry is obtained from the database for comparison and analysis with the filter coefficient R:

[0049] If the filtration coefficient R>the preset filtration coefficient Ry, it means that there is an abnormality in the filtration of the mud within the time threshold, and a cleaning signal is generated accordingly. The generated signal is displayed on the display screen of the supervision center in the form of text "Well Sequence 026 / Filtration Abnormality / Filter Residue Control Plan / Information Record" to remind the supervisory personnel, and the filter residue control plan started by the cleaning signal controls the filter number "Well Sequence 026" to automatically control the slag discharge, and the external drive box 203 of the filter is started.

[0050] A servo motor is arranged inside the external drive box 203, and the output end of the servo motor is meshed with the outer side of the inner gear ring 205 through the shaft and the gear, so that the inner gear ring 205 inside the upper ring frame 204 and the lower ring frame 207 are driven to rotate at the same time, thereby driving the upper sealing plate 206 and the lower sealing plate to rotate at the same time;

[0051] During this process, the small static cavity is fully opened for a short time, so that the static main cavity temporarily connects the annular cavity and the external impurity collection device through the small static cavity. With the continuous upwelling pressure of the mud, the accumulated impurity particles are guided by the mud with a sudden change of flow direction, and quickly flow into the external impurity collection device along the static main cavity and the small static cavity. After the small static cavity is dislocated and closed, the mud flow trajectory is reset again.

[0052] If the filtering coefficient R is less than the preset filtering coefficient Ry, no signal is generated.

[0053] Combining the first and second embodiments, it can be seen that the present invention has many advantages:

[0054] First, by installing structures such as the base 1, mud impact is buffered, pressure is reduced and erosion is prevented, and spiral flow is guided to protect components, accelerate filtration, and improve equipment durability and efficiency;

[0055] The second is to set up upper and lower filter rings to filter impurities step by step, and use the combination of related components to clean up the retained impurities in time, ensure the filtering accuracy and process, and maintain the stable operation of the filter;

[0056] Third, it is equipped with sensors and monitoring systems to collect and analyze usage time data, calculate and compare the filtration coefficient, automatically judge the filtration status, and automatically discharge slag when abnormal, reducing the burden on personnel and improving the stability and efficiency of production operations.

[0057] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A mud filtration device suitable for hydraulically assisted extension of a large-reach well, comprising a mounting base (1), characterized in that: A reflux inner cylinder (5) is sleeved at the center of the interior of the mounting base (1), a slag separation cone disk (3) is sleeved on the middle outer wall of the mounting base (1), a slag discharge cylinder cover (2) sleeved with the bottom outer wall of the mounting base (1) is arranged at the bottom of the slag separation cone disk (3), a semi-arc top cover (4) is arranged at the top of the mounting base (1), an upper ring frame (204) and a lower ring frame (207) are arranged inside the slag discharge cylinder cover (2), and an external drive box (203) is arranged between the upper ring frame (204) and the lower ring frame (207); A particle capture sensor facing the slag discharge tube cover (2) is arranged on the inner wall of the slag separation cone disk (3), and a mud flow sensor is embedded in the inner wall of the top of the reflux inner tube (5). The particle capture sensor is used to collect the pressure value of retained particles inside the slag separation cone disk (3) and the slag discharge tube cover (2). The mud flow sensor is used to collect the high-quality slurry delivery value of the slurry passing through the reflux inner tube (5), and the retained particle pressure value and the high-quality slurry delivery value are sent to the database of the supervision center to form a filtration supervision system.

2. A mud filtration device suitable for hydraulically assisted extension of extended reach wells according to claim 1, characterized in that: An inner sleeve (101) is arranged at the bottom center of the mounting base (1), external injection valves (102) are arranged through the outer walls at both ends of the mounting base (1), and offset anti-impact plates (103) facing the external injection valves (102) are arranged on the outer walls at both ends of the inner sleeve (101), and a plurality of side channels (104) connected to the slag separation cone disk (3) are arranged through the outer periphery of the middle part of the mounting base (1).

3. A mud filtration device suitable for hydraulically assisted extension of extended reach wells according to claim 2, characterized in that: The bottom of the reflux inner cylinder (5) is sleeved inside the inner sleeve (101), and a conical separation cylinder cover (501) located above the side channel (104) is arranged on the top outer wall of the reflux inner cylinder (5). A supporting sleeve frame is arranged on the top of the inner sleeve (101), and the mud flow sensor is used to perform real-time statistics on the total amount of mud that has been filtered and passed within a time threshold.

4. A mud filtration device suitable for hydraulically assisted extension of extended reach wells according to claim 2, characterized in that: A limiting ring (302) is provided on the inner wall of the bottom of the slag separating cone disk (3) and is sleeved with the outer wall of the mounting base (1); a reinforcing rib is provided on the top of the limiting ring (302) and is attached to the outer wall of the mounting base (1) and connected to the inner wall of the slag separating cone disk (3); and the reinforcing rib is connected to the outer wall of the frame between the side channel (104); an inner cone ring (301) is provided on the inner wall of the bottom of the slag separating cone disk (3) and is clamped with the inner wall of the bottom of the side channel (104); and the particle capture sensor is used to collect data on the retained accumulation volume of large particle impurities that are intercepted and filtered in the upwelling mud within a time threshold.

5. A mud filtration device suitable for hydraulically assisted extension of extended reach wells according to claim 1, characterized in that: An inner sleeve ring (202) is arranged inside the slag discharge barrel cover (2) and is sleeved with the outer wall of the mounting base (1); a plurality of groups of partition plates (201) are arranged between the inner sleeve ring (202) and the slag discharge barrel cover (2); and the upper ring frame (204) and the lower ring frame (207) are symmetrically sleeved on the upper and lower sections of the partition plates (201).

6. A mud filtration device suitable for hydraulically assisted extension of extended reach wells according to claim 5, characterized in that: An annular guide groove is recessed on the inner wall of the slag discharge barrel cover (2) and the outer wall of the inner sleeve (101); an inner gear ring (205) is sleeved on the inner wall of the upper ring frame (204); and the inner ring body of the inner gear ring (205) is sleeved in the annular guide groove of the slag discharge barrel cover (2); a plurality of groups of upper sealing plates (206) are arranged on the inner side of the inner gear ring (205); and a driven ring sleeved in the annular guide groove on the inner sleeve ring (202) is arranged on the inner side wall of the upper sealing plate (206).

7. A mud filtration device suitable for hydraulically assisted extension of extended reach wells according to claim 2, characterized in that: The bottom edge of the semi-arc top cover (4) is provided with a clamping ring (402) which is sleeved with the inner wall of the top of the mounting base (1); a lower filter ring (403) facing the support sleeve is provided inside the clamping ring (402); a metal ring connected to the support sleeve is provided inside the lower filter ring (403); an upper filter ring (401) which is clamped between the reflux inner cylinder (5) and the semi-arc top cover (4) is provided above the lower filter ring (403); the inner side of the upper filter ring (401) is locked with the top of the support sleeve by a fastener; and an external valve is provided through the top of the semi-arc top cover (4).

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