A drilling mud and wastewater recovery system

Abstract

This invention provides a drilling mud and wastewater recovery system, relating to the technical field of recovery systems. It includes drilling pipes and drill pipes. The recovery system, from top to bottom, comprises a mud blowout preventer, an anti-slip mat, a splash guard, a mud scraper, a mud collector, a metal filter flange, a collection and distribution device, and a wastewater collector. The mud blowout preventer is installed on the arc surface of the drill pipe, the anti-slip mat is laid on the drilling platform, and the splash guard is placed on the anti-slip mat. This invention adds a mud collector to the drill pipe face platform to achieve truly efficient mud recovery. Compared to traditional, rudimentary, or even nonexistent equipment, it improves recovery efficiency. An internal screen pipe filters the mud and prevents environmental pollution caused by wastewater splashing. An anti-falling object device is installed at the drill face to effectively eliminate the risk of foreign objects falling into the well. This system achieves environmentally friendly collection, saving drilling costs and protecting the environment.

Description

Technical Field

[0001] This invention relates to the field of recycling system technology, and more particularly to a recycling system for drilling mud and wastewater used in drilling and production processes. Background Technology

[0002] The drilling and production mud and wastewater recovery system is mainly used to efficiently collect, separate and treat mud and wastewater generated during tripping and running in oil drilling operations, so as to achieve environmentally compliant real-time treatment while drilling and avoid pollution.

[0003] The invention disclosed in CN119288374B is a mud blowout preventer box for pressurized drilling equipment. Its key technical features include: a box body, a pressure cap, and a base plate. The box body has a central hole for the drill bit to pass through, a vent on the side wall, a first sealing ring at the top, and a second sealing ring at the bottom. Both the first and second sealing rings are made of elastic material. The pressure cap is installed on the top of the box body and is used to compress the first sealing ring. The pressure cap has a first through hole for connecting to the central hole. The base plate is installed on the bottom of the box body and is used to compress the second sealing ring. The base plate has a second through hole for connecting to the central hole. The box body has fixing structures for securing the pressure cap and the base plate. This effectively prevents mud from spraying out during unhooking, avoiding pollution of the drilling platform and surrounding environment.

[0004] Regarding the aforementioned issues, the following technical deficiencies were identified: In the oil drilling industry, simple blowout preventers (BOPs) are typically used during tripping operations to prevent mud and wastewater from gushing out. However, existing BOPs only provide basic blowout prevention and cannot effectively recover and treat mud and wastewater. Insufficient supporting equipment in the industry leads to low mud separation efficiency and a lack of standardization in the collection process, resulting in alternating pollution problems. Furthermore, existing technologies struggle to meet the latest environmental regulations' requirements for real-time mud treatment during drilling.

[0005] Therefore, there is an urgent need for an efficient and standardized recycling system to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a drilling and production mud and wastewater recycling system.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a drilling mud and wastewater recovery system, comprising a drilling pipe and a drill rod, wherein the recovery system comprises, from top to bottom, a mud blowout preventer, an anti-slip mat, a splash guard, a mud scraper, a mud collector, a metal filter flange, a collection and distribution device, and a wastewater collector. The mud blowout preventer is disposed on the arc surface of the drill rod, the anti-slip mat is laid on the drilling platform, the splash guard is placed on the anti-slip mat, the mud collector, the collection and distribution device, and the wastewater collector are all disposed on the outer wall of the drilling pipe, the mud scraper is disposed on the arc surface of the drill rod, the metal filter flange is disposed at the upper end of the drilling pipe, and the wastewater discharge device is disposed at the upper end of the metal filter flange.

[0008] The effects achieved by the above components are as follows: By setting up an overall structure, a mud collector is added to the drill pipe face platform to truly achieve efficient mud recycling. Compared with traditional, simple or even missing equipment, the recycling efficiency is greatly improved. The built-in screen pipe perfectly realizes mud filtration. A sewage collector is installed under the drill pipe face to ensure that the silt on the platform under the drilling face is kept away from environmental pollution caused by sewage splashing. An anti-falling object device is installed at the drilling face opening to effectively eliminate the risk of foreign objects falling into the well. The entire system can achieve environmentally friendly collection, saving drilling costs and protecting the environment.

[0009] Preferably, the mud blowout preventer box includes two semi-circular shells rotatably connected to each other. One of the semi-circular shells has several locking blocks installed on its outer wall, and the other semi-circular shell has a fixed seat rotatably connected to its outer wall. The inner wall of the fixed seat is rotatably connected to a retaining ring. A handle is installed on the outer wall of the semi-circular shell, and the handle has a U-shaped cross-section.

[0010] The effect achieved by the above components is that the mud blowout preventer box is mainly used as a handheld tool by drilling workers.

[0011] Preferably, the splash-proof safety barrier ring is frustum-shaped.

[0012] The effect achieved by the above components is that the ejected mud is isolated from the outside of the drilling platform by the splash-proof safety isolation ring.

[0013] Preferably, the scraper includes a fixed scraper seat, and the upper and lower surfaces of the fixed scraper seat are detachably connected to reinforcing plates. The inner wall of the fixed scraper seat is detachably connected to an upper scraper plate and a lower scraper plate.

[0014] The effect achieved by the above components is that when the drill pipe needs to be unloaded during the lifting process, the mud scraper can scrape off the excess mud on the drill pipe.

[0015] Preferably, the mud collector includes a first mud collection hood and a second mud collection hood. Locking rings are installed on the lower surfaces of both the first and second mud collection hoods, and the two locking rings are engaged with each other. A plurality of first buckles are installed on the outer wall of the first mud collection hood, and a plurality of first locking rings are installed on the outer wall of the second mud collection hood. The first locking rings are engaged with the first buckles, and a plurality of pull rings are rotatably connected to the outer wall of the first mud collection hood.

[0016] The effect achieved by the above components is that the mud ejected from the drilling pipeline is isolated from the platform perimeter by the splash-proof safety isolation ring and collected directly by the mud collector below.

[0017] Preferably, the metal filter flange includes a flange ring, and the outer wall of the flange ring is uniformly provided with a plurality of filter holes.

[0018] The effect achieved by the above components is that wastewater re-enters the pipeline through the metal filter flange, thereby achieving environmentally friendly collection of sludge.

[0019] Preferably, the collecting umbrella fabric includes a feeding section and a collecting section from top to bottom, wherein the feeding section is frustum-shaped and the collecting section is cylindrical.

[0020] The aforementioned components achieve the following effect: wastewater outside the splash-proof safety isolation ring enters the collection umbrella fabric through the platform's drainage holes, and then flows into the wastewater collector from the collection umbrella fabric.

[0021] Preferably, the sewage collector includes a support ring, a first sewage collection hood, and a second sewage collection hood. The support ring is installed on the outer wall of the drilling pipe. The first sewage collection hood and the second sewage collection hood are placed on the upper surface of the support ring. Sealing rings are installed on the inner walls of both the first sewage collection hood and the second sewage collection hood. A plurality of second latches and a plurality of second locking rings are installed on the outer wall of the first sewage collection hood. The second latches and the second locking rings are engaged with each other.

[0022] The effect achieved by the above components is that the sewage collector can collect sewage from the umbrella fabric.

[0023] Preferably, the mud collector is equipped with a screen tube, which enables effective filtration and recycling of mud.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0025] 1. In this invention, the recovery system mainly consists of a blowout preventer, anti-slip mat, splash guard, mud scraper, anti-falling object device, mud collector, metal filter flange, collection umbrella, and wastewater collector, from top to bottom. The anti-slip mat is laid on the drilling platform, the safety enclosure ring is placed on the anti-slip mat, and the mud collector, collection umbrella, and wastewater collector are located below the platform and installed on the outer wall of the drilling pipe. The mud blowout preventer is mainly used as a handheld tool by the drilling worker. When the drill pipe needs to be unloaded after being raised, the mud scraper scrapes off the excess mud on the drill pipe, and then the worker can lock the mud blowout preventer. Located at the drill pipe joint, this system prevents mud from spraying onto the drilling platform surface during drill pipe unloading. The sprayed mud is then isolated from the platform by a splash guard and collected directly by a mud collector below. It then re-enters the pipeline through a metal filter flange, achieving environmentally friendly mud collection and saving costs. Wastewater outside the splash guard enters the collection umbrella through the platform's drainage holes, flows into the wastewater collector, and is discharged through a pipe below the wastewater collector. This integrated structure enables environmentally friendly collection of the entire system, saving drilling costs and protecting the environment. Attached Figure Description

[0026] Figure 1 This invention provides a three-dimensional structural schematic diagram of a drilling mud and wastewater recovery system for the drilling and production process;

[0027] Figure 2 This invention presents a partial structural disassembly diagram of a drilling mud and wastewater recovery system for the drilling process.

[0028] Figure 3 This invention provides a partial structural schematic diagram of a drilling mud and wastewater recovery system for the drilling and production process;

[0029] Figure 4 This invention presents a schematic diagram of the structure of a mud blowout preventer box in a mud and wastewater recovery system for drilling and production processes.

[0030] Figure 5 This invention provides a schematic diagram of the structure of a mud collector for a mud and wastewater recovery system used in the drilling and extraction process.

[0031] Figure 6 This invention proposes a system for recovering drilling mud and wastewater during the drilling and production process. Figure 3 The diagram shows a partial structure.

[0032] Figure 7 This invention presents a schematic diagram of the wastewater collector in a drilling and wastewater recovery system for the drilling process.

[0033] Legend: 1. Drilling pipe; 2. Drill pipe; 3. Mud blowout preventer box; 301. Semi-circular shell; 302. Clamping block; 303. Fixing seat; 304. Clamping ring; 305. Handle; 4. Anti-slip pad; 5. Splash-proof safety isolation ring; 6. Scraper; 601. Reinforcing plate; 602. Fixed scraper seat; 603. Upper scraper blade; 604. Lower scraper blade; 8. Mud collector; 801. First mud collection hood; 802. Second mud collection hood; 803, Locking ring; 804, First locking ring; 805, First locking buckle; 806, Pull ring; 9, Metal filter flange; 901, Flange ring; 902, Filter hole; 10, Collection umbrella cloth; 101, Feeding section; 102, Collection section; 11, Wastewater collector; 1101, First wastewater collection hood; 1102, Second wastewater collection hood; 1103, Second locking ring; 1104, Second locking buckle; 1105, Sealing ring; 1106, Bearing ring. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0036] Example 1, as Figure 1-7As shown, the present invention provides a drilling mud and wastewater recovery system, including a drilling pipe 1 and a drill rod 2. The recovery system includes, from top to bottom, a mud blowout preventer 3, an anti-slip mat 4, a splash safety isolation ring 5, a mud scraper 6, a mud collector 8, a metal filter flange 9, a collection and distribution device, and a wastewater collector 11. The mud blowout preventer 3 is set on the arc surface of the drill rod 2. The anti-slip mat 4 is laid on the drilling platform. The splash safety isolation ring 5 is placed on the anti-slip mat 4. The mud collector 8, the collection umbrella 10, and the wastewater collector 11 are all set on the outer wall of the drilling pipe 1. The mud scraper 6 is set on the arc surface of the drill rod. The metal filter flange 9 is set at the upper end of the drilling pipe 1. The anti-falling object device is set at the upper end of the metal filter flange 9. By setting up an overall structure and adding a mud collector 8 to the drilling pipe's two-sided platform, highly efficient mud recycling is achieved. Compared to traditional, rudimentary, or even missing equipment, this greatly improves recycling efficiency. The internal screen pipe perfectly filters the mud. A sewage collector 11 is installed 1-2m below the drilling pipe's two-sided platform to ensure the removal of silt from the drilling face and prevent environmental pollution caused by sewage splashing. An anti-falling object device 7 is installed at the drilling face opening to effectively prevent the risk of foreign objects falling into the well. This complete system enables environmentally friendly collection, saving drilling costs and protecting the environment.

[0037] The specific settings and functions will be explained in detail below.

[0038] like Figures 2 to 7 As shown, the mud blowout preventer 3 includes two semi-circular shells 301, which are rotatably connected. Several locking blocks 302 are installed on the outer wall of one semi-circular shell 301, and a fixing seat 303 is rotatably connected to the outer wall of the other semi-circular shell 301. A retaining ring 304 is rotatably connected to the inner wall of the fixing seat 303. A handle 305 is installed on the outer wall of the semi-circular shell 301, and the handle 305 has a U-shaped cross-section. The mud blowout preventer 3 is mainly used as a handheld tool by drilling workers.

[0039] The splash-proof safety isolation ring 5 is truncated cone-shaped. The ejected mud is isolated from the outside of the drilling platform by the splash-proof safety isolation ring 5.

[0040] The scraper 6 includes a fixed scraper seat 602, with reinforcing plates 601 detachably connected to both the upper and lower surfaces of the fixed scraper seat 602. An upper scraper plate 603 and a lower scraper plate 604 are detachably connected to the inner wall of the fixed scraper seat 601. When the drill rod 2 is lifted and needs to be unloaded, the scraper 6 can scrape off excess mud from the drill rod 2.

[0041] The mud collector 8 includes a first mud collection cover 801 and a second mud collection cover 802. Locking rings 803 are installed on the lower surfaces of both the first mud collection cover 801 and the second mud collection cover 802. The two locking rings 803 are engaged with each other. A number of first latches 805 are installed on the outer wall of the first mud collection cover 801. A number of first locking rings 804 are installed on the outer wall of the second mud collection cover 802. The first locking rings 804 are engaged with the first latches 805. A number of pull rings 806 are rotatably connected to the outer wall of the first mud collection cover 801. When it is necessary to install the mud collector 8, first move the first mud collection cover 801 and the second mud collection cover 802 to cover the outer wall of the drilling pipe 1 so that the two locking rings 803 are engaged. Then, engage the first locking buckle 805 with the first locking ring 804 to complete the installation of the mud collector 8. The ejected mud is isolated from the platform perimeter by the splash-proof safety isolation ring 5 and is collected directly by the mud collector 8 below.

[0042] The metal filter flange 9 includes a flange ring 901, and the outer wall of the flange ring 901 is evenly provided with a number of filter holes 902. Wastewater re-enters the pipeline through the metal filter flange 9, thereby achieving environmentally friendly collection of sludge.

[0043] The collecting umbrella 10 consists of a feeding section 101 and a collecting section 102 from top to bottom. The feeding section 101 is shaped like a frustum, and the collecting section 102 is shaped like a cylinder. Wastewater outside the splash-proof safety isolation ring 5 enters the collecting umbrella 10 through the platform drainage hole and flows into the wastewater collector 11.

[0044] The sewage collector 11 includes a support ring 1106, a first sewage collection cover 1101, and a second sewage collection cover 1102. The support ring 1106 is installed on the outer wall of the drilling pipe 1. The first sewage collection cover 1101 and the second sewage collection cover 1102 are placed on the upper surface of the support ring 1106. The inner walls of the first sewage collection cover 1101 and the second sewage collection cover 1102 are both equipped with sealing rings 1105. The outer wall of the first sewage collection cover 1101 is equipped with a plurality of second latches 1104 and a plurality of second locking rings 1103. The second latches 1104 and the second locking rings 1103 are engaged with each other. When it is necessary to install the sewage collector 11 on the outer wall of the drilling pipe 1, first place the first sewage collection cover 1101 and the second sewage collection cover 1102 on the bearing ring 1106 installed on the outer wall of the drilling pipe 1, and then lock the second locking ring 1103 and the second locking buckle 1104 to complete the installation of the sewage collector 11. The sealing ring 1105 can block the gap between the first sewage collection cover 1101 and the second sewage collection cover 1102 to prevent sewage leakage. The sewage collector 11 can collect the sewage in the collection umbrella 10.

[0045] The overall working principle of the system is as follows: The recovery system mainly consists of a blowout preventer (BOP) box, anti-slip mat 4, splash guard safety isolation ring 5, mud scraper 6, anti-falling object device 7, mud collector 8, metal filter flange 9, collection umbrella 10, and wastewater collector 11 from top to bottom. The anti-slip mat 4 is laid on the drilling platform, and the safety isolation ring is placed on the anti-slip mat 4. The mud collector 8, collection umbrella 10, and wastewater collector 11 are located below the platform and installed on the outer wall of the drilling pipe 1. The mud BOP box 3 is mainly used as a hand tool by the drilling workers. When the drill pipe 2 is lifted and needs to be unloaded, the mud scraper 6 scrapes off the excess mud on the drill pipe 2, after which the workers can use the mud scraper to remove the excess mud. The blowout preventer 3 is locked at the joint of drill pipe 2 to prevent the mud inside drill pipe 2 from spraying onto the drilling platform surface when the drill pipe 2 is unloaded. The sprayed mud is then isolated from the platform perimeter by the splash-proof safety isolation ring 5 and collected directly by the mud collector 8 below. It then re-enters the pipeline through the metal filter flange 9, thus achieving environmentally friendly mud collection and saving costs. Wastewater outside the splash-proof safety isolation ring 5 enters the collection umbrella 10 through the platform drainage hole, flows into the wastewater collector 11, and is discharged through the pipeline below the wastewater collector 11. By setting up the overall structure, the entire system can achieve environmentally friendly collection, saving drilling costs and protecting the environment.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A drilling mud and wastewater recovery system, comprising a drilling pipe (1) and a drill rod (2), wherein the recovery system comprises, from top to bottom, a mud blowout preventer (3), an anti-slip mat (4), a splash-proof safety isolation ring (5), a mud scraper (6), a mud collector (8), a metal filter flange (9), a collection umbrella (10), and a wastewater collector (11), characterized in that: The mud blowout preventer (3) is set on the arc surface of the drill pipe (2), the anti-slip mat (4) is laid on the drilling platform, the splash-proof safety isolation ring (5) is placed on the anti-slip mat (4), the mud collector (8), the collection umbrella cloth (10) and the sewage collector (11) are all set on the outer wall of the drilling pipe (1), the mud scraper (6) is set on the arc surface of the drill pipe (2), the metal filter flange (9) is set at the upper end of the drilling pipe (1), and a falling object prevention device is also set at the upper end of the metal filter flange (9); The mud blowout preventer box (3) includes two semi-circular shells (301) that are rotatably connected. One of the semi-circular shells (301) has several locking blocks (302) installed on its outer wall. The other semi-circular shell (301) has a fixed seat (303) rotatably connected to its outer wall. The fixed seat (303) has a retaining ring (304) rotatably connected to its inner wall. The semi-circular shell (301) has a handle (305) installed on its outer wall. The handle (305) has a U-shaped cross section. The splash-proof safety isolation ring (5) is frustum-shaped. The metal filter flange (9) includes a flange ring (901), and several filter holes (902) are evenly opened on the outer wall of the flange ring (901). Wastewater re-enters the drilling pipeline (1) through the metal filter flange (9), thereby achieving environmentally friendly collection of mud. The collecting umbrella cloth (10) includes a feeding section (101) and a collecting section (102) from top to bottom. The feeding section (101) is shaped like a frustum, and the collecting section (102) is shaped like a cylinder. The sewage outside the splash-proof safety isolation ring (5) enters the collecting umbrella cloth (10) through the platform drainage hole and flows into the sewage collector (11) from the collecting umbrella cloth (10).

2. The drilling mud and wastewater recovery system according to claim 1, characterized in that: The scraper (6) includes a fixed scraper seat (602), and a reinforcing plate (601) is detachably connected to both the upper and lower surfaces of the fixed scraper seat (602). An upper scraper plate (603) and a lower scraper plate (604) are detachably connected to the inner wall of the fixed scraper seat (602).

3. A drilling mud and wastewater recovery system according to claim 1, characterized in that: The mud collector (8) includes a first mud collection hood (801) and a second mud collection hood (802). Locking rings (803) are installed on the lower surfaces of both the first mud collection hood (801) and the second mud collection hood (802). The two locking rings (803) are engaged with each other. A plurality of first latches (805) are installed on the outer wall of the first mud collection hood (801). A plurality of first locking rings (804) are installed on the outer wall of the second mud collection hood (802). The first locking rings (804) are engaged with the first latches (805). A plurality of pull rings (806) are rotatably connected to the outer wall of the first mud collection hood (801).

4. A drilling mud and wastewater recovery system according to claim 1, characterized in that: The sewage collector (11) includes a support ring (1106), a first sewage collection cover (1101), and a second sewage collection cover (1102). The support ring (1106) is installed on the outer wall of the drilling pipe (1). The first sewage collection cover (1101) and the second sewage collection cover (1102) are placed on the upper surface of the support ring (1106). The inner walls of the first sewage collection cover (1101) and the second sewage collection cover (1102) are each equipped with a sealing ring (1105). The outer wall of the first sewage collection cover (1101) is equipped with a plurality of second latches (1104) and a plurality of second locking rings (1103). The second latches (1104) and the second locking rings (1103) are engaged with each other.

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