High-low pressure device for oil drilling and production

Abstract

The utility model relates to the technical field of manufacturing of petroleum drilling and production equipment, and discloses a high-low pressure device for petroleum drilling and production, which comprises an instrument assembly body, two observation outlets are arranged at the top of the instrument assembly body, and two pressure gauges are respectively mounted on the two observation outlets. The two pressure gauges are respectively a 0-10MPa (metric-inch) anti-seismic pressure gauge and a 0-100MPa (metric-inch) anti-seismic pressure gauge, so that the working states in different pressure ranges can be monitored in real time, and the stability and the safety in the drilling process are ensured. By arranging the device, the pressure can be monitored and adjusted in real time, and the stability and safety of the drilling process are ensured; the design of the buffer and the stop valve effectively prevents the instrument from being damaged, prolongs the service life of equipment, reduces the maintenance cost, improves the working efficiency, reduces the use cost, can randomly rotate the observation direction of the pressure gauge, can quickly and conveniently observe the pressure in the equipment or a pipeline, and improves the safety and reliability of the operation of a drill rod well.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and production equipment manufacturing technology, specifically a high and low pressure device for oil drilling. In order to ensure the normal operation of drilling work, it can be used in high pressure risers, mud pumps and blowout preventers. It can more effectively monitor the pressure in the equipment and pipelines, clearly distinguish the pressure levels at different stages, and effectively protect the pressure gauge. Background Technology

[0002] In the oil drilling and production process, the drilling process is quite hazardous. In order to carry out drilling operations more efficiently and safely, especially in high-pressure areas, a number of monitoring devices are installed to ensure the normal operation of drilling work. These include pressure gauges and sensors on the valve assembly of the high-pressure riser platform; pressure gauge assemblies on the choke and kill manifold; and pressure gauge assemblies on the mud pump, etc.

[0003] Currently, the most common approach is to equip equipment with pressure measuring devices based on its rated operating pressure. However, this method is ineffective in detecting unexpected situations at the well site: when the pressure is too high, the pressure gauge is damaged, making it impossible to detect the pressure inside the equipment or pipeline; when the pressure is too low, the actual pressure inside the equipment or pipeline cannot be accurately determined due to the range limitation of the pressure gauge. This makes it impossible to control on-site operations normally. This is where our high and low pressure device comes in. Utility Model Content

[0004] The purpose of this utility model is to provide a high and low pressure device for oil drilling, which solves the technical problems of existing devices being unable to detect sudden situations at the well site: when the pressure is too high, the pressure gauge is damaged, making it impossible to detect the pressure in the equipment or pipeline; when the pressure is too low, the actual pressure in the equipment or pipeline cannot be accurately determined due to the range limitation of the pressure gauge. The device achieves the goal of real-time and accurate monitoring of high and low pressure changes through intelligent sensors and dual-range design, ensuring stable operation even under extreme pressure fluctuations, and effectively avoiding equipment damage and operation interruption.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high and low pressure device for oil drilling, comprising an instrumentation unit. The top of the instrumentation unit has two observation outlets, each equipped with a pressure gauge. These two pressure gauges are a 0-10MPa (metric / imperial) anti-vibration pressure gauge and a 0-100MPa (metric / imperial) anti-vibration pressure gauge, respectively, to monitor the working status within different pressure ranges in real time, ensuring the stability and safety of the drilling process. Below each pressure gauge is a buffer, which effectively absorbs pressure fluctuations and prevents instrument damage. Below the buffers is a shut-off valve for controlling fluid flow, ensuring rapid cut-off of the pressure source in emergencies and improving the system's emergency response capability. This shut-off valve is installed on the top of the instrumentation unit via a double-meter short joint.

[0006] Preferably, the rated working pressure of the shut-off valve and the buffer is not less than 70 MPa; the entire instrument is made of high-strength alloy material.

[0007] Preferably, both ends of the instrument assembly are provided with plugs via sealing packing, and the plugs are made of a high-sealing-performance material;

[0008] Preferably, an inner connection is provided at the bottom center of the instrument assembly, which is connected to an outer connection via a bearing. An O-ring seal is provided between the inner and outer connections to ensure the sealing performance of the connection, prevent fluid leakage, and improve the stability of system operation. The inner and outer connections are made of high-strength, wear-resistant materials to ensure no deformation during long-term use. The O-ring seal is made of high-pressure and corrosion-resistant material to extend the sealing life, reduce maintenance frequency, and ensure continuous and stable operation of the system under high-pressure environments.

[0009] Preferably, the shut-off valve specifically comprises a valve body, a valve core, and a handle. A screw is provided on one side of the valve body, and the valve core is installed on the handle via a pressure cap and a nut on the other side of the valve body. A copper ring is provided between the nut and the valve body. The copper ring effectively reduces friction and improves the opening and closing flexibility of the valve core. The valve core and the valve body are tightly fitted by a sealing ring to ensure sealing. The handle is easy to operate, has moderate torque, facilitates quick opening and closing, and reduces operating errors.

[0010] Preferably, the buffer specifically comprises a housing, a buffer plug, and a rubber sealing ring. The housing contains two seamless tubes, with a buffer medium filling the space between them to effectively absorb impact and reduce equipment vibration. The ends of the seamless tubes are connected to the buffer plug, which contacts the inner wall of the housing. The buffer plug is fitted with a right pressure cap and a left pressure cap via the rubber sealing ring, ensuring a tight fit between the buffer plug and the seamless tubes. The right pressure cap is connected to a pressure gauge, and the left pressure cap is connected to a shut-off valve. When pressure is applied, the pressure pushes the buffer plug to compress the buffer medium. The buffer medium responds quickly, evenly and smoothly dispersing the pressure to avoid instantaneous impact.

[0011] This utility model provides a high and low pressure device for oil drilling. It has the following beneficial effects:

[0012] (1) This utility model can monitor and adjust the pressure in real time by setting the device to ensure the stability and safety of the drilling process; the design of the buffer and the shut-off valve effectively prevents instrument damage, extends the service life of the equipment, reduces maintenance costs, improves work efficiency, reduces usage costs, and allows the pressure gauge to be rotated at will to observe the pressure in the equipment or pipeline quickly and conveniently, thus improving the safety and reliability of drill pipe well operations.

[0013] (2) This utility model uses a buffer to relieve the pressure inside the pipe from acting quickly on the pressure gauge, thereby improving the service life of the pressure gauge; it can not only more clearly distinguish the pressure inside the pipe when it is high pressure and low pressure, but also reduce the time to replace the pressure gauge and shorten the drilling time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the gate valve structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the buffer structure of this utility model.

[0017] In the diagram: Instrument main body 11, shut-off valve 12, buffer 13, 0-10MPa metric / imperial shock-resistant pressure gauge 14, 0-100MPa metric / imperial shock-resistant pressure gauge 15, plug 16, internal connection 17, bearing 18, O-ring seal 19, external connection 110, valve body 121, screw 122, handle 123, valve core 124, pressure cap 125, nut 126, copper ring 127, sealing ring 128, housing 131, seamless tube 132, buffer plug 133, right pressure cap 134, rubber sealing ring 135, left pressure cap 136. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] Based on the existing problems of undetectable emergencies at well sites—such as excessively high pressure damaging pressure gauges and preventing pressure detection in equipment or pipelines, and excessively low pressure making it impossible to accurately determine the actual pressure in equipment or pipelines due to the limited range of pressure gauges—this invention provides a preferred embodiment of a high-low pressure device for oil drilling, for example… Figure 1-3As shown: A high and low pressure device for oil drilling includes an instrumentation unit 11. The top of the instrumentation unit 11 has two observation ports, each equipped with a pressure gauge. These gauges are a 0-10MPa metric / imperial anti-vibration pressure gauge 14 and a 0-100MPa metric / imperial anti-vibration pressure gauge 15, respectively, to monitor the working status within different pressure ranges in real time, ensuring the stability and safety of the drilling process. Below each pressure gauge is a buffer 13, which effectively absorbs pressure fluctuations and prevents instrument damage. Below the buffer 13 is a shut-off valve 12, used to control fluid flow and ensure rapid pressure cut-off in emergencies, improving the system's emergency response capability. The shut-off valve 12 is mounted on the top of the instrumentation unit 11 via a double-horizontal short joint.

[0021] The rated working pressure of the shut-off valve 12 and the buffer 13 is not less than 70MPa, ensuring stable operation under high pressure and extending the service life of the equipment; the instrument body 11 is made of high-strength alloy material, which has good corrosion resistance and fatigue resistance, and can maintain structural stability in extreme environments.

[0022] The instrument body 11 has plugs 16 installed at both ends via sealing packing. Both ends of the plugs can serve as process ports; after removing the plugs and sealing them, they can also be used to install adapters for pressure sensors and other pipelines, achieving multi-functional integration and improving operational flexibility. The plugs 16 are made of high-sealing-performance materials, ensuring no leakage risk under high-pressure environments, further enhancing the safety and reliability of the equipment. The plug design facilitates quick replacement of parts, reducing maintenance costs and improving work efficiency. The plugs have a compact structure, occupy little space, and are easy to install and disassemble on-site, optimizing equipment layout and improving the overall system stability and ease of operation.

[0023] An inner connection 17 is located at the bottom center of the instrument assembly 11. This inner connection 17 is connected to an outer connection 110 via a bearing 18. An O-ring seal 19 is provided between the inner connection 17 and the outer connection 110 to ensure the sealing performance of the connection, prevent fluid leakage, and improve the stability of system operation. The inner connection 17 and the outer connection 110 are made of high-strength, wear-resistant materials to ensure that they do not deform during long-term use. The O-ring seal 19 is made of high-pressure resistant and corrosion-resistant material to extend the sealing life, reduce maintenance frequency, and ensure continuous and stable operation of the system under high-pressure environments.

[0024] The shut-off valve 12 specifically comprises a valve body 121, a valve core 124, and a handle 123. A screw 122 is provided on one side of the valve body 121, and the valve core 124 is mounted on the handle 123 on the other side of the valve body 121 via a pressure cap 125 and a nut 126. A copper ring 127 is provided between the nut 126 and the valve body 121. The copper ring 127 effectively reduces friction and improves the opening and closing flexibility of the valve core 124. The valve core 124 and the valve body 121 are tightly fitted by a sealing ring 128 to ensure sealing. The handle 123 is easy to operate, has moderate torque, facilitates quick opening and closing, and reduces operating errors.

[0025] The buffer 13 specifically comprises a housing 131, a buffer plug 133, and a rubber sealing ring 135. The housing 131 contains two seamless tubes 132, with a buffer medium filling the space between them to effectively absorb impact and reduce equipment vibration. The ends of the seamless tubes 132 are connected to the buffer plug 133, which contacts the inner wall of the housing 131. The buffer plug 133 is fitted with a right pressure cap 134 and a left pressure cap 136 via the rubber sealing ring 135, ensuring a tight connection between the buffer plug 133 and the seamless tubes 132. The right pressure cap 134 is connected to a pressure gauge, and the left pressure cap 136 is connected to a shut-off valve 12. When pressure is applied, the pressure pushes the buffer plug 133 to compress the buffer medium. The buffer medium responds quickly, evenly and smoothly dispersing the pressure and preventing instantaneous impact.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high and low pressure device for oil drilling, comprising an instrumentation unit (11), characterized in that: The instrumentation unit (11) has two observation ports on its top, and two pressure gauges are installed on each of the two observation ports. The two pressure gauges are a 0-10MPa anti-vibration pressure gauge (14) and a 0-100MPa (metric and imperial) anti-vibration pressure gauge (15) to monitor the working status of different pressure ranges in real time and ensure the stability and safety of the drilling process. A buffer (13) is installed below each of the two pressure gauges. The buffer (13) can effectively absorb pressure fluctuations and prevent instrument damage. A shut-off valve (12) is installed below the buffer (13) to control the fluid flow rate and ensure that the pressure source is quickly cut off in an emergency, thereby improving the emergency response capability of the system. The shut-off valve (12) is installed on the top of the instrumentation unit (11) through a double metric short joint.

2. The high and low pressure device for oil drilling according to claim 1, characterized in that: The rated working pressure of the shut-off valve (12) and the buffer (13) is not less than 70 MPa; the instrument body (11) is made of high-strength alloy material.

3. The high and low pressure device for oil drilling according to claim 1, characterized in that: The instrument assembly (11) has plugs (16) at both ends via sealing packing, and the plugs (16) are made of high sealing performance material.

4. The high and low pressure device for oil drilling according to claim 1, characterized in that: An inner connection (17) is provided at the bottom center of the instrument assembly (11). The inner connection (17) is connected to an outer connection (110) through a bearing (18). An O-ring (19) is provided between the inner connection (17) and the outer connection (110) to ensure the sealing performance of the connection, prevent fluid leakage, and improve the stability of system operation. The inner connection (17) and the outer connection (110) are made of high-strength materials, which are wear-resistant and ensure that they do not deform after long-term use. The O-ring (19) is made of high-pressure resistant and corrosion-resistant material, which extends the sealing life, reduces the frequency of maintenance, and ensures that the system continues to operate stably under high pressure.

5. The high and low pressure device for oil drilling according to claim 1, characterized in that: The shut-off valve (12) specifically comprises a valve body (121), a valve core (124), and a handle (123). A screw (122) is provided on one side of the valve body (121), and the valve core (124) is installed on the handle (123) on the other side of the valve body (121) by means of a pressure cap (125) and a nut (126). A copper ring (127) is provided between the nut (126) and the valve body (121). The copper ring (127) effectively reduces friction and improves the opening and closing flexibility of the valve core (124). The valve core (124) and the valve body (121) are tightly fitted by a sealing ring (128) to ensure sealing. The handle (123) is easy to operate, has moderate torque, and is easy to open and close quickly, reducing operating errors.

6. The high and low pressure device for oil drilling according to claim 1, characterized in that: The buffer (13) specifically comprises a housing (131), a buffer plug (133), and a rubber sealing ring (135). The housing (131) is provided with two seamless tubes (132) inside. The space between the seamless tubes (132) is filled with a buffer medium to effectively absorb the impact force and reduce equipment vibration. The end of the seamless tube (132) is connected to the buffer plug (133). The buffer plug (133) is in contact with the inner wall of the housing (131). The buffer plug (133) is equipped with a right pressure cap (134) and a left pressure cap (136) respectively through the rubber sealing ring (135) to ensure that the buffer plug (133) and the seamless tube (132) are tightly connected. The right pressure cap (134) is connected to the pressure gauge, and the left pressure cap (136) is connected to the shut-off valve (12).

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