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WeChat: 86-13735815206 / 86-17392256505
Phone: 86-29-88680837
Mail: sales@hlsolidscontrol.com
Add: Room 804, Building 1, Western Cloud Valley Phase II, Fengxi New Town, Xixian New District, Shaanxi Province
Types and characteristics of Mud Shale Shaker
Time: 2024-05-11 Source: Author:
The mud Shale Shaker is a first-level solid control equipment. Whether the Shale Shaker can be used reasonably is related to the use of the next level of solid control equipment.
How to choose a suitable mud Shale Shakers in oil drilling scenarios? I think it should be comprehensively considered from factors such as pump displacement, screen area, solid concentration, drilling fluid viscosity, density, etc. These factors directly affect the selection of Shale Shaker and separation effect. In practical applications, reasonable selection should be based on the situation.
Regarding the selection of Shale Shaker mesh, a fine mesh should be used as much as possible. The smallest screen mesh used by the advanced Shale Shaker can reach 325 mesh to 460 mesh. The general principle is that the drilling fluid should cover 70 to 80% of the screen area, except for special circumstances.
There are four commonly used types of mud Shale Shakerss, namely ordinary elliptical screen, circular Shale Shaker, linear Shale Shakers and balanced elliptical screen. They each have their own characteristics. When choosing, please combine factors such as oil well type, geological type, drilling fluid type and other factors to make a scientific and reasonable selection and use!
Ordinary elliptical Shale Shaker
Ordinary elliptical mud Shale Shaker, also known as unbalanced elliptical screen, has a vibration device fixed directly above the center of mass of the screen box. For this type of Shale Shakers, the transverse amplitude is greater than the normal amplitude, and the ratio of the transverse amplitude to the normal amplitude is greater than the ratio of circular vibration. Therefore, its average conveying speed is greater than that of the circular Shale Shakers, which affects the quality of the drilling fluid. processing effect.
If the screen is lengthened, backflow will also occur. Therefore, it requires the screen box to be tilted at an angle and use gravity to forcefully discharge the sand to prevent the sand from being thrown backward. From this, the tilt of the screen box does improve the movement performance of sand particles, but the amount of drilling fluid processed by the Shale Shakers is reduced, which is the main shortcoming of the ordinary elliptical mud Shale Shaker.
Circular Shale Shaker
The circular mud Shale Shaker is also called a self-centering Shale Shakers, and the vibrator is located at the center of mass of the screen box. When the screen box vibrates in a circular motion, the normal and transverse accelerations of the screen box are equal, the screen box can be installed horizontally, and there is no accumulation on the screen. The processing capacity can be increased accordingly, but the projection angle of solid particles on this type of screen is As a function of sieve acceleration, when the normal acceleration is 3 to 6 times the gravity acceleration, the solid particle ejection angle reaches 70° to 80°.
Such a steep projection angle causes the drilling cuttings to have a large inertia when falling and are easily crushed, which accordingly increases the penetration rate of sand particles and is detrimental to the purification of drilling fluid. Field practice shows that the circular mud Shale Shakers has a low sand conveying speed and high sand permeability. When this type of screen is equipped with a fine-mesh screen, it has shortcomings such as too small processing capacity and too short screen life.
Linear Shale Shaker
The linear mud Shale Shaker is made up of two spindles with eccentric blocks that rotate synchronously and counter-rotating to produce linear vibration. The acceleration balance of the linear vibration acts on the screen box. The screen is evenly stressed and its service life is significantly better than that of the circular or elliptical Shale Shakers. screen; in addition, because the drilling fluid is subject to less screening resistance, the volume and uniformity of the drilling fluid processed are much larger and better than that of the circular or elliptical Shale Shakers.
However, the linear screen also has its weakness. Since the vibration direction of the linear screen does not change, the acceleration vector acting on the particles stuck in the screen holes does not change (that is, along the vibration direction), making it difficult for the stuck particles to fall off and appear. The "screen smearing" phenomenon reduces the effective flow area of the screen, resulting in a decrease in processing capacity. Moreover, when the mesh number of the screen increases, the sifting smearing phenomenon will become more serious. Therefore, when the mud Shale Shakers uses an ultra-fine mesh screen, it is impossible to meet the drilling fluid dosage requirements.
Balanced elliptical Shale Shaker
The balanced elliptical mud Shale Shaker is a new type of screen developed in recent years. The major and minor axes of all elliptical motion trajectories on the screen box are the same, and the size and direction of the throwing angle are also exactly the same. The screen box is in translational state. The sand conveying speed at the entrance, midpoint and exit of the screen box is consistent.
The balanced elliptical screen combines the basic advantages of circular Shale Shakers and linear Shale Shaker, that is, the "long axis" of the ellipse is a component that enhances the transportation of cuttings, while the "short axis" can reduce the phenomenon of cuttings sticking together on the screen surface. , eliminating the possibility of some cuttings clogging the screen holes. According to field test results, under normal circumstances, the processing capacity of the balanced elliptical mud Shale Shaker is 20-30% greater than that of the linear screen. It is a relatively advanced drilling fluid Shale Shakers and represents the current development direction of the mud Shale Shakers.
HL Petroleum Mud Shale Shaker Long life & Competitive price. It has complete specifications, models and supports customization.
We are solids control equipment manufacturer integrating R&D, production, sales and service. HL Petroleum solid control equipment has reached the industry's advanced level and provides personalized customization. It is a solid control brand worth choosing!
How to choose a suitable mud Shale Shakers in oil drilling scenarios? I think it should be comprehensively considered from factors such as pump displacement, screen area, solid concentration, drilling fluid viscosity, density, etc. These factors directly affect the selection of Shale Shaker and separation effect. In practical applications, reasonable selection should be based on the situation.
Regarding the selection of Shale Shaker mesh, a fine mesh should be used as much as possible. The smallest screen mesh used by the advanced Shale Shaker can reach 325 mesh to 460 mesh. The general principle is that the drilling fluid should cover 70 to 80% of the screen area, except for special circumstances.
There are four commonly used types of mud Shale Shakerss, namely ordinary elliptical screen, circular Shale Shaker, linear Shale Shakers and balanced elliptical screen. They each have their own characteristics. When choosing, please combine factors such as oil well type, geological type, drilling fluid type and other factors to make a scientific and reasonable selection and use!
Ordinary elliptical Shale Shaker
Ordinary elliptical mud Shale Shaker, also known as unbalanced elliptical screen, has a vibration device fixed directly above the center of mass of the screen box. For this type of Shale Shakers, the transverse amplitude is greater than the normal amplitude, and the ratio of the transverse amplitude to the normal amplitude is greater than the ratio of circular vibration. Therefore, its average conveying speed is greater than that of the circular Shale Shakers, which affects the quality of the drilling fluid. processing effect.
If the screen is lengthened, backflow will also occur. Therefore, it requires the screen box to be tilted at an angle and use gravity to forcefully discharge the sand to prevent the sand from being thrown backward. From this, the tilt of the screen box does improve the movement performance of sand particles, but the amount of drilling fluid processed by the Shale Shakers is reduced, which is the main shortcoming of the ordinary elliptical mud Shale Shaker.
Circular Shale Shaker
The circular mud Shale Shaker is also called a self-centering Shale Shakers, and the vibrator is located at the center of mass of the screen box. When the screen box vibrates in a circular motion, the normal and transverse accelerations of the screen box are equal, the screen box can be installed horizontally, and there is no accumulation on the screen. The processing capacity can be increased accordingly, but the projection angle of solid particles on this type of screen is As a function of sieve acceleration, when the normal acceleration is 3 to 6 times the gravity acceleration, the solid particle ejection angle reaches 70° to 80°.
Such a steep projection angle causes the drilling cuttings to have a large inertia when falling and are easily crushed, which accordingly increases the penetration rate of sand particles and is detrimental to the purification of drilling fluid. Field practice shows that the circular mud Shale Shakers has a low sand conveying speed and high sand permeability. When this type of screen is equipped with a fine-mesh screen, it has shortcomings such as too small processing capacity and too short screen life.
Linear Shale Shaker
The linear mud Shale Shaker is made up of two spindles with eccentric blocks that rotate synchronously and counter-rotating to produce linear vibration. The acceleration balance of the linear vibration acts on the screen box. The screen is evenly stressed and its service life is significantly better than that of the circular or elliptical Shale Shakers. screen; in addition, because the drilling fluid is subject to less screening resistance, the volume and uniformity of the drilling fluid processed are much larger and better than that of the circular or elliptical Shale Shakers.
However, the linear screen also has its weakness. Since the vibration direction of the linear screen does not change, the acceleration vector acting on the particles stuck in the screen holes does not change (that is, along the vibration direction), making it difficult for the stuck particles to fall off and appear. The "screen smearing" phenomenon reduces the effective flow area of the screen, resulting in a decrease in processing capacity. Moreover, when the mesh number of the screen increases, the sifting smearing phenomenon will become more serious. Therefore, when the mud Shale Shakers uses an ultra-fine mesh screen, it is impossible to meet the drilling fluid dosage requirements.
Balanced elliptical Shale Shaker
The balanced elliptical mud Shale Shaker is a new type of screen developed in recent years. The major and minor axes of all elliptical motion trajectories on the screen box are the same, and the size and direction of the throwing angle are also exactly the same. The screen box is in translational state. The sand conveying speed at the entrance, midpoint and exit of the screen box is consistent.
The balanced elliptical screen combines the basic advantages of circular Shale Shakers and linear Shale Shaker, that is, the "long axis" of the ellipse is a component that enhances the transportation of cuttings, while the "short axis" can reduce the phenomenon of cuttings sticking together on the screen surface. , eliminating the possibility of some cuttings clogging the screen holes. According to field test results, under normal circumstances, the processing capacity of the balanced elliptical mud Shale Shaker is 20-30% greater than that of the linear screen. It is a relatively advanced drilling fluid Shale Shakers and represents the current development direction of the mud Shale Shakers.
HL Petroleum Mud Shale Shaker Long life & Competitive price. It has complete specifications, models and supports customization.
We are solids control equipment manufacturer integrating R&D, production, sales and service. HL Petroleum solid control equipment has reached the industry's advanced level and provides personalized customization. It is a solid control brand worth choosing!
