Hydraulic oil regeneration system of hydraulic station for well drilling

Abstract

A hydraulic station hydraulic oil regeneration system for well drilling comprises an oil inlet filter, the oil inlet filter is communicated with a first-stage heater through a pipeline, an oil inlet pump is arranged on a communicating pipeline of the oil inlet filter and the first-stage heater, and an outlet of the first-stage heater is communicated with an inlet of a first-stage vacuum dehydrator through a pipeline. An outlet of the first-stage vacuum dehydrator is communicated with an inlet of the second-stage heater, an outlet of the second-stage heater is communicated with an inlet of the second-stage vacuum dehydrator, an outlet of the second-stage vacuum dehydrator is communicated with an inlet of the coalescing separator through a pipeline, and an oil outlet pump is arranged on a communicating pipeline of the second-stage vacuum dehydrator and the coalescing separator. An outlet of the coalescence separator is communicated with an inlet of the oil outlet filter, and an outlet of the oil outlet filter is communicated with the top of the oil reservoir through a pipeline. According to the utility model, free water can be conveniently removed through the first-stage vacuum dehydrator and the second-stage vacuum dehydrator, and then water in an oil-water mixture (emulsified oil) can be conveniently removed through the coalescence separator.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the hydraulic station hydraulic oil recycling field for drilling, specifically a kind of hydraulic station hydraulic oil regeneration system for drilling. BACKGROUND

[0002] In the process of oil production, hydraulic station is needed to provide driving force for drilling, oil production, oil transportation and other operations, but due to its harsh use environment, especially in the process of drilling and oil production, the related equipment needs to be soaked in high-temperature mud liquid for a long time. Over time, external moisture and impurities will enter the hydraulic oil. Under extreme conditions, the water content can reach 8%, causing rust on the equipment, reducing the viscosity of the hydraulic oil, and causing oil line blockage and other accidents, which cannot guarantee the normal use of well control equipment and other hydraulic equipment. The method currently used by drilling teams is to inspect and replace hydraulic oil to ensure production, which is costly. UTILITY MODEL CONTENTS

[0003] The utility model provides a kind of hydraulic station hydraulic oil regeneration system for drilling, after oil product analysis, oil and water, basically exist oil-water mixture (emulsified oil), dissolved oil, dissolved water three states, so the utility model can conveniently remove dissolved water and water in oil-water mixture (emulsified oil), to solve the defects in the prior art.

[0004] The utility model is implemented by the following technical solutions:

[0005] A kind of hydraulic station hydraulic oil regeneration system for drilling, including oil inlet filter, the oil inlet filter is communicated with primary heater by pipeline, the communication pipeline of the oil inlet filter and primary heater is provided with oil inlet pump, the outlet of the primary heater is communicated with the inlet of primary vacuum water trap by pipeline, the outlet of the primary vacuum water trap is communicated with the inlet of secondary heater, the outlet of the secondary heater is communicated with the inlet of secondary vacuum water trap, the primary vacuum water trap and secondary vacuum water trap are respectively communicated with the inlet of water cooler by pipeline, vacuum pump group is arranged on the communication pipeline of the primary vacuum water trap and secondary vacuum water trap and water cooler, the outlet of the secondary vacuum water trap is communicated with the inlet of coalescence separator by pipeline, the communication pipeline of the secondary vacuum water trap and coalescence separator is provided with oil outlet pump, the outlet of the coalescence separator is communicated with the inlet of oil outlet filter, the outlet of the oil outlet filter is communicated with the top of oil reservoir by pipeline.

[0006] A kind of hydraulic station hydraulic oil regeneration system for drilling as described above, the vacuum pump group includes Roots vacuum pump and multiple-piece vacuum pump.

[0007] The hydraulic oil regenerating system for hydraulic station of drilling rig has a pressurizing pump arranged at the top of the oil reservoir, which is communicated with the inside of the oil reservoir, and an oil outlet valve arranged on the oil outlet pipe at the bottom of the oil reservoir.

[0008] The hydraulic oil regenerating system for hydraulic station of drilling rig has a water cooler, and the outlet of the water cooler is communicated with the top of the water reservoir through a pipeline.

[0009] The hydraulic oil regenerating system for hydraulic station of drilling rig has a coalescing separator, and the filter core of the coalescing separator is an oil-immersed hydrophobic fiber filter core.

[0010] The hydraulic oil regenerating system for hydraulic station of drilling rig has a coalescing separator, and the filter core of the coalescing separator is an oil-immersed hydrophobic fiber filter core. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0012] Figure 1 is a structural schematic view of the present application;

[0013] Figure 2 is Figure 1 a front view of

[0014] Figure 3 is Figure 1 a top view of

[0015] Reference signs: 1, oil inlet filter; 2, primary heater; 3, oil inlet pump; 4, primary vacuum water separator; 5, secondary heater; 6, secondary vacuum water separator; 7, water cooler; 8, vacuum pump group; 9, coalescing separator; 10, oil outlet pump; 11, oil outlet filter; 12, oil reservoir; 13, pressurizing pump; 14, oil outlet valve; 15, water reservoir. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0017] A hydraulic station hydraulic oil regeneration system for drilling, comprising an oil inlet filter 1, the oil inlet filter 1 is communicated with a primary heater 2 through a pipeline, an oil inlet pump 3 is arranged on the communication pipeline of the oil inlet filter 1 and the primary heater 2, the outlet of the primary heater 2 is communicated with the inlet of a primary vacuum water separator 4 through a pipeline, the outlet of the primary vacuum water separator 4 is communicated with the inlet of a secondary heater 5, the outlet of the secondary heater 5 is communicated with the inlet of a secondary vacuum water separator 6, the primary vacuum water separator 4 and the secondary vacuum water separator 6 are respectively communicated with the inlet of a water cooler 7 through a pipeline, a vacuum pump group 8 is arranged on the communication pipeline of the primary vacuum water separator 4 and the secondary vacuum water separator 6 and the water cooler 7, the outlet of the secondary vacuum water separator 6 is communicated with the inlet of a coalescence separator 9 through a pipeline, an oil outlet pump 10 is arranged on the communication pipeline of the secondary vacuum water separator 6 and the coalescence separator 9, the outlet of the coalescence separator 9 is communicated with the inlet of an oil outlet filter 11, and the outlet of the oil outlet filter 11 is communicated with the top of an oil storage device 12 through a pipeline.The utility model in use opens the oil inlet pump 3, first removes the solid impurities in the interior of the hydraulic oil to be treated through the oil inlet filter 1, then sends the hydraulic oil after heating through the primary heater 2 into the primary vacuum water separator 4, and under the action of the vacuum pump group 8, the free water in the hydraulic oil is changed into water vapor and extracted and liquefied through the water cooler 7 after recovery, after the first-stage water removal, the hydraulic oil is sent into the coalescence separator 9 under the action of the oil outlet pump 10 to remove the water in the oil-water mixture (emulsified oil), and after removing the solid impurities such as solid crystals possibly generated in the hydraulic oil water removal process through the oil outlet filter 11, the hydraulic oil is stored in the oil storage device 12 for subsequent recycling.

[0018] Specifically, the first heater 2 is connected with the outlet of the second vacuum water separator 6 by a pipeline, a circulating pump and a first electromagnetic valve are arranged on the connecting pipeline of the first heater 2 and the second vacuum water separator 6, a second electromagnetic valve is arranged on the connecting pipeline of the second vacuum water separator 6 and the coalescing separator 9, and a moisture measuring sensor is arranged at the outlet of the second vacuum water separator 6. In the utility model, the moisture content in the hydraulic oil treated by the second vacuum water separator 6 can be conveniently obtained by the moisture measuring sensor, if the moisture content meets the standard, the hydraulic oil is sent into the coalescing separator 9, if the moisture content exceeds the standard, the second electromagnetic valve is closed and then the circulating pump and the first electromagnetic valve are opened to re-treat the hydraulic oil by the first and second water separators, and then the moisture content in the hydraulic oil is detected by the moisture measuring sensor until the moisture content meets the standard, so that the removal efficiency of free water in the hydraulic oil is ensured.

[0019] Specifically, the vacuum pump group 8 comprises a Roots vacuum pump and a multi-plate vacuum pump. In the utility model, the water boiling point in the first and second vacuum water separators 4 and 6 can be controlled at about 50 DEG C by the Roots vacuum pump and the multi-plate vacuum pump, so that the heating temperature of the hydraulic oil is reduced to save energy and the removal efficiency of free water in the hydraulic oil is effectively improved.

[0020] More specifically, the top of the oil reservoir 12 is provided with a pressurizing pump 13, the pressurizing pump 13 is in communication with the inside of the oil reservoir 12, and an oil outlet valve 14 is arranged on the outlet pipe at the bottom of the oil reservoir 12. In the utility model, the treated hydraulic oil in the oil reservoir 12 can be conveniently pumped back to the hydraulic station for recycling by the pressurizing pump 13, so that the operation is convenient and the use is convenient.

[0021] Further, the outlet of the water cooler 7 is connected with the top of the water reservoir 15 by a pipeline. In the utility model, the liquefied water can be conveniently stored by the water reservoir 15.

[0022] Still further, the filter element of the coalescing separator 9 is an oil-immersed hydrophobic fiber filter element. In the utility model, the oil-immersed hydrophobic fiber filter element of the coalescing separator 9 can conveniently separate oil and water, so that the use is convenient.

[0023] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A hydraulic oil regeneration system for a hydraulic station for drilling wells, characterized in that: The application relates to a fuel oil purifying device, which comprises an oil inlet filter (1), a first-stage heater (2), an oil inlet pump (3), a first-stage vacuum water separator (4), a second-stage heater (5), a second-stage vacuum water separator (6), a water cooler (7), a vacuum pump group (8), a coalescence separator (9), an oil outlet filter (11) and an oil storage device (12).

2. The hydraulic oil regeneration system for hydraulic station of drilling rig according to claim 1, characterized in that: The vacuum pump group (8) comprises a Roots vacuum pump and a multi-plate vacuum pump.

3. The hydraulic oil regeneration system for hydraulic station of drilling rig according to claim 1, characterized in that: The oil storage device (12) is provided with a pressurizing pump (13) at the top, the pressurizing pump (13) is communicated with the inside of the oil storage device (12), and an oil outlet valve (14) is arranged on the outlet pipe at the bottom of the oil storage device (12).

4. The hydraulic oil regeneration system for hydraulic station of drilling rig according to claim 1, characterized in that: The outlet of the water cooler (7) is communicated with the top of a water storage device (15) through a pipe.

5. The hydraulic oil regeneration system for hydraulic station of drilling rig according to claim 1, characterized in that: The filter core of the coalescence separator (9) is an oil-immersed hydrophobic fiber filter core.

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