CN212508167U - Mud pool return manifold system - Google Patents

Abstract

The utility model discloses a mud pit returns manifold system, including return header pipe, a plurality of return branch pipes, a plurality of first valves and the controller that set up to the slope of mud pit direction from the return header pipe, the input of returning the branch pipe is connected with the output of first valve, the input of first valve is connected with the lower extreme of return header pipe along the mud direction of delivery in the return header pipe, first valve is connected with the controller; the return main pipe is used for returning mud in the drilled well to the mud pit; the return branch pipes are used for dividing the mud in the return main pipe into the mud pools corresponding to the return branch pipes; and the mud tank is used for storing mud. The utility model discloses a return branch pipe slope setting between house steward and the mud pit will be returned to in making the sand bits that return in the house steward return the mud pit smoothly, effectively reduce the probability that appears blocking phenomenon in the return house steward.

Description

Mud pool return manifold system

Technical Field

The utility model relates to an ocean drilling operation device especially relates to a manifold system is returned to mud pond.

Background

The scheme of returning the mud of the existing drilling platform and drilling ship to a mud pit mainly adopts an open groove mode and a closed pipe mode. There are some deficiencies in current designs: firstly, the return pipeline adopts an open groove mode, once some rock debris is accumulated in the open groove, the returned mud easily overflows the open groove, and the environment of a mud pit area is difficult to keep clean; if the drill encounters harmful gas again, the open groove is easy to emit the harmful gas, and the personnel in the area are easy to be poisoned; secondly, the return pipeline adopts the mode of closed pipe, and the pipeline content easily appears blockking up, and the user can't wash the pipeline effectively fast, has influenced the normal development of drilling operation, leads to the drilling operation progress slow.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a mud pool returns manifold system, which can solve the problem that the pipeline is easy to block.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a mud pit return manifold system comprises a return main pipe, a plurality of return branch pipes, a plurality of first valves and a controller, wherein the return branch pipes are obliquely arranged from the return main pipe to the mud pit; the return main pipe is used for returning mud in the drilled well to the mud pit; the return branch pipes are used for dividing the mud in the return main pipe into the mud pools corresponding to the return branch pipes; and the mud tank is used for storing mud.

Preferably, the inclination of the return main pipe and the return branch pipe is 1: 40.

Preferably, the return header further comprises a plurality of cleaning windows and an observation panel for covering the cleaning windows, the cleaning windows are arranged on the upper end face of the return header along the slurry conveying direction in the return header, and the observation panel is detachably connected with the upper end face of the return header.

Preferably, the cleaning windows are distributed at equal intervals on the upper end face of the return header pipe

Preferably, the device also comprises a first pump unit for conveying mud, a second pump unit for conveying seawater and a cleaning pipeline, wherein the output end of the first pump unit and the output end of the second pump unit are both connected with the input end of the cleaning pipeline, the output end of the cleaning pipeline is connected with the upper end of the return main pipe, and the first pump unit and the second pump unit are both connected with the controller.

Preferably, still include a plurality of certainly wash the pipeline to return the washing branch pipe and a plurality of second valve that the house steward direction slope set up, the output of washing the pipeline is connected with the input that washs the branch pipe, wash the output that divides the pipe and pass through the second valve along returning the mud direction of delivery in the house steward and being connected with the upper end of returning the house steward, the second valve is connected with the controller.

Preferably, the cleaning branched pipes are distributed at the upper end of the return main pipe at equal intervals.

Preferably, the system further comprises a liquid level sensor and a density sensor which are arranged in the return header pipe, and the liquid level sensor and the density sensor are both connected with the controller.

Preferably, the system also comprises a plurality of grouting pipes and a plurality of third valves which are sequentially arranged along the slurry conveying direction in the return branch pipe, wherein the grouting pipes are connected with the return branch pipe through the third valves, and the third valves are connected with the controller.

Compared with the prior art, the beneficial effects of the utility model reside in that: the return branch pipe between the return main pipe and the mud pit is obliquely arranged, so that sand in the return main pipe smoothly returns to the mud pit, the probability of blockage in the return main pipe is effectively reduced, the cleaning window and the observation panel covering the cleaning window are arranged on the return main pipe, a user can observe the mud blockage condition in the return main pipe through the observation panel, and the return main pipe is cleaned through the cleaning pipeline and the cleaning branch pipe.

Drawings

Fig. 1 is a schematic structural diagram of a mud pit return manifold system according to the present invention.

In the figure: 1-a return manifold; 2-returning and pipe dividing; 3-a first valve; 4-cleaning the window; 5-a viewing panel; 6-a first pump unit; 7-a second pump unit; 8, cleaning the pipeline; 9-cleaning the branch pipes; 10-a second valve; 11-a liquid level sensor; 12-a density sensor; 13-grouting pipe; 14-third valve.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, a mud pit return manifold system comprises a return main pipe 1, a plurality of return branch pipes 2 which are obliquely arranged from the return main pipe 1 to the mud pit, a plurality of first valves 3 and a controller, wherein preferably, the inclination of the return main pipe 1 and the return branch pipes 2 is 1:40, the input end of the return branch pipe 2 is connected with the output end of the first valve 3, the input end of the first valve 3 is connected with the lower end of the return main pipe 1 along the mud conveying direction (as shown in fig. 1) in the return main pipe 1, and the first valve 3 is connected with the controller; the return main pipe 1 is used for returning mud in a drilled well to a mud pit; the return branch pipes 2 are used for dividing the mud in the return main pipe 1 into respective corresponding mud pools; and the mud tank is used for storing mud.

Specifically, the return header pipe 1 further includes a plurality of cleaning windows 4 and an observation panel 5 for covering the cleaning windows 4, the cleaning windows 4 are arranged on the upper end surface of the return header pipe 1 along the slurry conveying direction in the return header pipe 1, and the observation panel 5 is detachably connected to the upper end surface of the return header pipe 1. Preferably, the cleaning windows 4 are arranged in an equally spaced distribution on the upper end face of the return manifold 1.

Specifically, the mud pit return manifold system further comprises a first pump unit 6 (a mud pump) for conveying mud, a second pump unit 7 (a sea water pump or an electric submersible pump) for conveying seawater and a cleaning pipeline 8, wherein the output end of the first pump unit 6 and the output end of the second pump unit 7 are both connected with the input end of the cleaning pipeline 8, the output end of the cleaning pipeline 8 is connected with the upper end of the return manifold 1, and the first pump unit 6 and the second pump unit 7 are both connected with a controller. Preferably, the device also comprises a plurality of cleaning branch pipes 9 and a plurality of second valves 10, wherein the cleaning branch pipes 9 and the second valves 10 are obliquely arranged from the cleaning pipeline 8 to the direction of the return main pipe 1, the output ends of the cleaning branch pipes 8 are connected with the input ends of the cleaning branch pipes 9, the output ends of the cleaning branch pipes 9 are connected with the upper end of the return main pipe 1 through the second valves 10 along the slurry conveying direction in the return main pipe 1, and the second valves 10 are connected with a controller. Furthermore, the cleaning branch pipes 9 are arranged at the upper end of the return main pipe 1 in an equidistant distribution.

Preferably, a liquid level sensor 11 and a density sensor 12 are further arranged in the return main pipe 1, the liquid level sensor 11 and the density sensor 12 are both connected with the controller, the slurry feeding device further comprises a plurality of grouting pipes 13 and a plurality of third valves 14, the grouting pipes 13 are sequentially arranged along the slurry conveying direction (the direction shown in fig. 1) in the return branch pipe 2, the grouting pipes 13 are connected with the return branch pipe 2 through the third valves 14, and the third valves 14 are connected with the controller.

Specifically, the working principle and the components of the present invention are specifically described as follows:

as shown in FIG. 1, during the marine drilling process, a large amount of sand is generated in the drilled well, and the drilled well is cleaned by mud, and the sand in the drilled well is cleaned out. Being in the ocean, the mud that has cleaned the well bore needs to be returned to the mud pit for storage for the next use. After the mud carrying the sand debris is cleaned by the filter device, the rock blocks with larger volume enter the return main pipe 1 and then return to the mud pit through the return branch pipe 2. Specifically, after the mud enters the return main pipe 1, the first valve 3 on the return branch pipe 2 corresponding to the mud pool is opened according to the storage conditions of the mud and the mud pool, so that the mud in the return main pipe 1 flows into the corresponding mud pool through the return branch pipe 2 to be stored, further, the inclination of the return main pipe 1 and the return branch pipe 2 is 1:40, so that the sand in the return main pipe 1 can smoothly return to the mud pool, and the probability of blockage in the return main pipe 1 is effectively reduced. Meanwhile, a grouting pipe 13 and a plurality of third valves 14 which are sequentially arranged along the slurry conveying direction in the return branch pipe 2 are also arranged, and the grouting pipe 13 is connected with the return branch pipe 2 through the third valves 14. After a user obtains the conditions of the liquid level, the density and the like of the mud through the liquid level sensor 11 and the density sensor 12 which are arranged in the return main pipe 1, substances such as seawater, drilling water and the like can be added into the mud which returns back and forth to the branch pipe 2 through the grouting pipe 13, and the mud stored in the mud pit can be continuously recycled.

In this embodiment, the return main pipe 1 further includes a plurality of cleaning windows 4 and an observation panel 5 for covering the cleaning windows 4, wherein the observation panel 5 is made of transparent or translucent material, and a user can observe the condition of the slurry in the return main pipe 1 through the observation panel 5 to determine whether the return main pipe 1 needs to be cleaned, preferably, the cleaning windows 4 are arranged on the upper end face of the return main pipe 1 at equal intervals along the slurry conveying direction in the return main pipe 1, when the return main pipe 1 needs to be cleaned, the user can detach the observation panel 5 to clean the return main pipe 1, so as to solve the congestion or blockage condition in the return main pipe 1, preferably, the first pump unit 6 (slurry pump) and/or the second pump unit 7 (sea water pump or electric submersible pump) pumps the slurry and/or the sea water into the cleaning pipes 8, and the slurry and/or the sea water in the cleaning pipes 8 flows into the cleaning branch pipes 9, and then according to the jam or blockage condition in the return main pipe 1, opening the corresponding second valve 10 to clean the return main pipe 1, and in order to fully clean the return main pipe 1, the cleaning branch pipes 9 are distributed on the return main pipe 1 at equal intervals along the slurry conveying direction in the return main pipe 1 so as to meet the cleaning requirements of different positions of the return main pipe 1.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims (9)

1. A mud pit return manifold system characterized by: the device comprises a return main pipe, a plurality of return branch pipes, a plurality of first valves and a controller, wherein the return branch pipes are obliquely arranged from the return main pipe to a mud pit; the return main pipe is used for returning mud in the drilled well to the mud pit; the return branch pipes are used for dividing the mud in the return main pipe into the mud pools corresponding to the return branch pipes; and the mud tank is used for storing mud.

2. The mud pit return manifold system of claim 1, wherein: the inclination of the return main pipe and the return branch pipe is 1: 40.

3. The mud pit return manifold system of claim 1, wherein: the return main pipe also comprises a plurality of cleaning windows and an observation panel used for covering the cleaning windows, the cleaning windows are arranged on the upper end face of the return main pipe along the slurry conveying direction in the return main pipe, and the observation panel is detachably connected with the upper end face of the return main pipe.

4. The mud pit return manifold system of claim 3, wherein: the cleaning windows are distributed on the upper end surface of the return header pipe at equal intervals.

5. The mud pit return manifold system of claim 1, wherein: the seawater cleaning device is characterized by further comprising a first pump unit for conveying slurry, a second pump unit for conveying seawater and a cleaning pipeline, wherein the output end of the first pump unit and the output end of the second pump unit are both connected with the input end of the cleaning pipeline, the output end of the cleaning pipeline is connected with the upper end of the return main pipe, and the first pump unit and the second pump unit are both connected with the controller.

6. The mud pit return manifold system of claim 5, wherein: still include a plurality of certainly wash the pipeline to return washing branch pipe and a plurality of second valve that house steward direction slope set up, the output that washs the pipeline is connected with the input that washs the branch pipe, the output that washs the branch pipe is connected with the upper end that returns the house steward through the second valve along the mud direction of delivery in the house steward, the second valve is connected with the controller.

7. The mud pit return manifold system of claim 6, wherein: the cleaning branch pipes are distributed at the upper end of the return main pipe at equal intervals.

8. The mud pit return manifold system of claim 1, wherein: the device also comprises a liquid level sensor and a density sensor which are arranged in the return main pipe, and the liquid level sensor and the density sensor are both connected with the controller.

9. The mud pit return manifold system of claim 1, wherein: the device is characterized by further comprising a plurality of grouting pipes and a plurality of third valves, wherein the grouting pipes and the third valves are sequentially arranged along the slurry conveying direction in the return branch pipes, the grouting pipes are connected with the return branch pipes through the third valves, and the third valves are connected with the controller.

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