A mud logging rock debris rapid drying device

Abstract

The utility model relates to oil logging technical field especially, relates to a kind of logging rock flour rapid drying equipment, including drying cabinet outer storehouse, the top of drying cabinet outer storehouse is provided with feed inlet, the bottom of drying cabinet outer storehouse is provided with discharge port;It further includes drying cabinet inner storehouse, the bottom of feed inlet is provided with spiral plate, spiral plate is set to the inside of drying cabinet inner storehouse, the other end of spiral plate passes through the bottom of drying cabinet inner storehouse and is connected with discharge port, drying cabinet inner storehouse is set to the inside of drying cabinet outer storehouse;The utility model compared with prior drying equipment, add spiral plate instead of distribution column, can be beneficial to large particle rock flour tumble, uniform drying, utilize rock flour self gravity on spiral plate autorotation tumble, break up, utilize pneumatic knocker low-frequency vibration, auxiliary break rock flour cake at the same time, avoid clay rock flour appear high-frequency pulverization, increase nitrogen injection, avoid oil-containing rock flour burst when temperature increases, the drying equipment of the utility model is adapted to multiple rock flour types, improve rock flour drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of oil logging technology, and in particular to a rapid drying device for logging cuttings. Background Technology

[0002] In the early stages of oil drilling, well logging analysis is required. Through methods such as rock and mineral analysis, geophysics, and geochemistry, information on wellbore return materials such as cuttings during drilling is observed, collected, recorded, and analyzed to establish a well logging geological profile, discover oil and gas shows, and evaluate oil and gas reservoirs. However, the returned cuttings are heavily contaminated and need to be cleaned and dried before analysis. To improve the drying speed of cuttings, they can be placed in drying equipment for rapid drying.

[0003] In the drying equipment, rock chips move from the inlet to the outlet along the channel, while the heater dries them. To ensure smooth movement, existing drying equipment uses a vibrating motor to move the chips. Distribution columns are placed on the chip's path to extend its residence time and improve drying uniformity. However, because rock chips are prone to caking at high temperatures, especially clay chips, the high-frequency vibration of the motor and the collision of the distribution columns with the clay chips can easily cause them to pulverize, making geological analysis of the rock chip samples impossible. When drying large rock chips, they can easily get stuck in the gap between the two distribution columns. As the number of chips increases, they accumulate in the gap and cannot move downwards, resulting in uneven drying and affecting drying efficiency.

[0004] Therefore, given the limited drying effect of existing drying equipment on easily caking rock cuttings and large rock cuttings, a rapid drying device for logging rock cuttings can be designed. This device replaces the material distribution column by using a downward spiral motion and utilizes the gravity of the rock cuttings to rotate and tumble the spiral plate, thereby breaking up the caking and improving drying efficiency. Utility Model Content

[0005] To overcome the problem that the material distribution column in most drying equipment easily causes the rock fragments to clump together and become pulverized, and easily gets stuck in the movement of large rock fragments, thus affecting the drying efficiency.

[0006] The technical solution of this utility model is as follows: a rapid drying device for logging cuttings, including an outer chamber of a drying box, a feed inlet and a discharge outlet. The feed inlet is provided at the top of the outer chamber of the drying box, and the discharge outlet is provided at the bottom of the outer chamber of the drying box. It also includes an inner chamber of the drying box and a spiral plate. The spiral plate is provided at the bottom of the feed inlet and is located inside the inner chamber of the drying box. The other end of the spiral plate passes through the bottom of the inner chamber of the drying box and is connected to the discharge outlet. The inner chamber of the drying box is located inside the outer chamber of the drying box.

[0007] Preferably, during the drying of logging cuttings, the cuttings enter through the feed inlet and exit through the discharge outlet after drying. By setting up an inner chamber in the drying box to reduce the vibration of the cuttings by the vibration mechanism, the pulverization of clay cuttings is prevented. The cuttings are transported by a spiral plate, and the cuttings tumble on the spiral plate by their own gravity, breaking up the caking. This achieves the effect of replacing the distribution column, using the gravity of the cuttings and the rotation and tumbling of the spiral plate to break up the caking, thereby improving the drying efficiency and enhancing the practical value of the drying equipment.

[0008] Preferably, a pneumatic knocker is installed at the top center of the outer chamber of the drying oven, forming a gap cavity between the outer chamber and the inner chamber of the drying oven.

[0009] Preferably, a buffer pad is provided inside the cavity, the inner chamber of the drying chamber is provided on top of the buffer pad, and the outer chamber of the drying chamber is provided at the bottom of the buffer pad.

[0010] Preferably, the spiral plate is spiral-shaped, and the middle part of the spiral plate is concave and groove-shaped.

[0011] Preferably, the rear wall of the drying chamber is provided with exhaust vents, and multiple sets of exhaust vents are arranged in an array.

[0012] Preferably, an air inlet pipe is provided on the side wall of the inner chamber of the drying oven. The air inlet pipe passes through the inner chamber, the cavity and the outer chamber of the drying oven. A nitrogen tank is provided at the other end of the air inlet pipe and is fixed to the outer wall of the outer chamber of the drying oven.

[0013] The beneficial effects of this utility model are:

[0014] Compared to existing drying equipment, the addition of a spiral plate instead of a distribution column allows for the full tumbling and uniform drying of large rock fragments. The rock fragments themselves rotate and tumble on the spiral plate under their own weight, breaking up any clumps. Low-frequency vibration from a pneumatic impactor further helps break up rock fragment agglomerates while preventing high-frequency pulverization of clay rock fragments. Increased nitrogen injection prevents oily rock fragments from bursting at elevated temperatures. This drying equipment is suitable for various types of rock fragments, significantly improving drying efficiency, effectively increasing rock fragment utilization, and enhancing the practical value of the drying equipment. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of a logging cuttings rapid drying device according to this utility model.

[0016] Figure 2 The diagram shown is a three-dimensional structural schematic of the spiral plate of a logging cuttings rapid drying device according to this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural diagram of the outer chamber of the drying box of a rapid drying device for logging cuttings according to this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the nitrogen device in a rapid drying equipment for logging cuttings according to this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Outer chamber of the drying oven; 101. Pneumatic impactor; 2. Inner chamber of the drying oven; 201. Spiral plate; 202. Exhaust vent; 3. Void cavity; 4. Feed inlet; 5. Discharge outlet; 6. Buffer pad; 7. Air inlet pipe; 8. Nitrogen tank. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] Please see Figure 1 and Figure 2 This utility model provides an embodiment: a rapid drying device for logging cuttings, including an outer chamber 1 of a drying box, an inlet 4, and an outlet 5. The inlet 4 is located at the top of the outer chamber 1, and the outlet 5 is located at the bottom of the outer chamber 1. It also includes an inner chamber 2 of the drying box and a spiral plate 201. The spiral plate 201 is located at the bottom of the inlet 4 and is disposed inside the inner chamber 2. The other end of the spiral plate 201 passes through the bottom of the inner chamber 2 and connects to the outlet 5. The inner chamber 2 is located inside the outer chamber 1 of the drying box. The spiral plate 201 is spiral in shape. The middle of 201 is recessed and grooved. A pneumatic impactor 101 is installed at the top center of the outer chamber 1 of the drying box. When drying logging cuttings, the cuttings enter from the feed inlet 4. The spiral plate 201 is spiral in shape, and the cuttings can turn over on the spiral plate 201 by their own weight to break up the clumps. The groove prevents the cuttings from rolling out of the track. The spiral plate 201 is suitable for various types of cuttings, effectively solving the inconvenience of using different equipment for different cuttings. By setting the pneumatic impactor 101 to vibrate at low frequency, it helps to break up the cuttings clumps and effectively avoids the phenomenon of excessive pulverization rate of clay cuttings due to excessive motor vibration frequency.

[0023] Please see Figure 2 and Figure 3 In this embodiment, a gap cavity 3 is formed between the outer chamber 1 and the inner chamber 2 of the drying box. A buffer pad 6 is provided inside the gap cavity 3. The inner chamber 2 of the drying box is located on the top of the buffer pad 6, and the outer chamber 1 of the drying box is located at the bottom of the buffer pad 6. By adding the gap cavity 3, the vibration surface is separated from the chamber wall, and the buffer pad 6 is added to reduce the impact of vibration on the rock chips, avoid the pulverization of clay rock chips caused by severe vibration, and reduce the pulverization rate. An exhaust hole 202 is provided on the rear wall of the inner chamber 2 of the drying box. Multiple sets of exhaust holes 202 are provided and distributed in an array. Steam is discharged through the exhaust holes 202 and discharged through the fan on the rear wall of the outer chamber 1 of the drying box.

[0024] Example 2

[0025] Please see Figure 2 and Figure 4 Compared to Example 1, this example adds a device for adding nitrogen. An air inlet pipe 7 is provided on the side wall of the inner chamber 2 of the drying chamber. The air inlet pipe 7 passes through the inner chamber 2, the cavity 3, and the outer chamber 1 of the drying chamber. A nitrogen tank 8 is provided at the other end of the air inlet pipe 7. The nitrogen tank 8 is fixed to the outer wall of the outer chamber 1 of the drying chamber. By opening the valve, nitrogen gas is allowed to enter the inner chamber 2 of the drying chamber from the nitrogen tank 8 through the air inlet pipe 7. With the injection of nitrogen gas, it can prevent the oil-bearing rock cuttings from bursting due to excessive temperature, which would affect the logging analysis of the rock cuttings samples.

[0026] Through the above steps, compared with existing drying equipment, the addition of a spiral plate 201 to replace the distribution column can facilitate the full tumbling of large rock fragments and uniform drying. The rock fragments themselves rotate and tumble on the spiral plate 201 under their own gravity, breaking up the caking. The low-frequency vibration of the pneumatic impactor 101 helps to break up the rock fragment clumps while avoiding high-frequency pulverization of clay rock fragments. The addition of nitrogen injection prevents oily rock fragments from bursting when the temperature rises. This drying equipment is suitable for various types of rock fragments, greatly improving the drying efficiency of rock fragments, effectively increasing the utilization rate of rock fragments, and enhancing the practical value of the drying equipment.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A rapid drying device for logging cuttings, comprising an outer chamber (1) of a drying box, a feed inlet (4) and a discharge outlet (5), wherein the feed inlet (4) is provided at the top of the outer chamber (1) of the drying box, and the discharge outlet (5) is provided at the bottom of the outer chamber (1), characterized in that: It also includes a drying chamber (2) and a spiral plate (201). The bottom of the feed inlet (4) is provided with a spiral plate (201). The spiral plate (201) is located inside the drying chamber (2). The other end of the spiral plate (201) passes through the bottom of the drying chamber (2) and is connected to the discharge port (5). The drying chamber (2) is located inside the drying chamber (1).

2. The rapid drying equipment for logging cuttings according to claim 1, characterized in that: A pneumatic knocker (101) is provided at the top center of the outer chamber (1) of the drying oven, and a gap cavity (3) is formed between the outer chamber (1) and the inner chamber (2) of the drying oven.

3. The rapid drying equipment for logging cuttings according to claim 2, characterized in that: The cavity (3) is provided with a buffer pad (6), the top of the buffer pad (6) is provided with the inner chamber of the drying box (2), and the bottom of the buffer pad (6) is provided with the outer chamber of the drying box (1).

4. The rapid drying equipment for logging cuttings according to claim 1, characterized in that: The spiral plate (201) is spiral-shaped, and the middle part of the spiral plate (201) is concave and groove-shaped.

5. The rapid drying equipment for logging cuttings according to claim 3, characterized in that: The rear wall of the inner chamber (2) of the drying oven is provided with exhaust holes (202), and there are multiple sets of exhaust holes (202) arranged in an array.

6. The rapid drying equipment for logging cuttings according to claim 5, characterized in that: An air inlet pipe (7) is provided on the side wall of the inner chamber (2) of the drying oven. The air inlet pipe (7) passes through the inner chamber (2), the cavity (3) and the outer chamber (1) of the drying oven. A nitrogen tank (8) is provided at the other end of the air inlet pipe (7). The nitrogen tank (8) is fixed on the outer wall of the outer chamber (1) of the drying oven.

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