Special resistance-reducing oil-increasing device for screw pump

Abstract

A special resistance reducing and oil increasing device for a screw pump relates to the technical field of mechanical equipment and comprises two petal bodies, namely a petal body I and a petal body II, an arc-shaped groove I is formed in the petal body I, special-shaped insertion blocks are arranged on the edges of the two sides of the arc-shaped groove I, and a spiral blade I is arranged on the outer wall of the petal body I; a second arc-shaped groove is formed in the second petal body, special-shaped inserting grooves are formed in the edges of the two sides of the second arc-shaped groove, a special-shaped groove is formed in the lower portion of the second arc-shaped groove, an anti-string rubber sheet is placed in the special-shaped groove, and a second spiral blade is arranged on the outer wall of the second petal body; the first petal body and the second petal body are connected in an inserted mode through the special-shaped inserting blocks and the special-shaped inserting grooves, the whole petal body is columnar, the first arc-shaped groove and the second arc-shaped groove are spliced to form a sucker rod barrel, the first spiral blade 4 and the second spiral blade 8 are spliced to form main body spiral blades, and a liquid flowing channel 11 is formed between every two adjacent upper and lower main body spiral blades. The bottom width L2 of the main body spiral blade is smaller than the top width L1. The special resistance reducing and oil increasing device for the screw pump not only can reduce the frictional resistance with an oil pipe and liquid, but also has a powerful boosting effect on the liquid.

Description

Technical fields:

[0001] This utility model relates to the field of mechanical equipment technology, specifically to a drag-reducing and oil-boosting device for screw pumps. Background technology:

[0002] Currently, the majority of tubing anchors used in oilfield screw pump wells are lift-and-drop type tubing anchors. This results in the tubing string existing in a curved form downhole, while the sucker rod string operates in a naturally drooping state downhole. Under these circumstances, the sucker rod and tubing will inevitably experience uneven wear. Furthermore, the centralizers on the sucker rod are all square. When the sucker rod rotates, the centralizer and tubing form a clanging and banging friction, which not only damages the tubing, but also creates considerable frictional resistance between the square centralizer and the fluid. Utility model content:

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a drag-reducing and oil-boosting device for screw pumps. It can not only reduce the frictional resistance with oil pipes and liquids, but also provide a strong boosting effect on the liquids.

[0004] To address the problems existing in the background technology, this utility model adopts the following technical solution: It includes two valve bodies, namely valve body one and valve body two. Valve body one has an arc-shaped groove one inside, with irregularly shaped inserts on both sides of the arc-shaped groove one, and a spiral blade one on the outer wall of valve body one. Valve body two has an arc-shaped groove two inside, with irregularly shaped slots on both sides of the arc-shaped groove two, and an irregularly shaped groove at the bottom of the arc-shaped groove two. An anti-cross-flow rubber sheet is placed inside the irregularly shaped groove, and a spiral blade two is provided on the outer wall of valve body two. Valve body one and valve body two are connected by irregularly shaped inserts and irregularly shaped slots, forming a columnar shape. Arc-shaped groove one and arc-shaped groove two are joined to form a sucker rod cylinder. Spiral blade one and spiral blade two are joined to form a main spiral blade. A liquid flow channel is formed between two adjacent main spiral blades. The bottom width L2 of the main spiral blade is smaller than the top width L1.

[0005] The aforementioned valve body, arc groove, irregular insert, and spiral blade are an integral structure made of high-strength nylon.

[0006] The diameter of the middle part of the irregular groove is larger than the diameters at both ends, and the diameters at both ends are equal to the diameter of the arc-shaped groove; the shape of the anti-slip rubber sheet is consistent with the shape of the irregular groove, and the anti-slip rubber sheet is thinner at both ends and thicker in the middle.

[0007] The two valves, two arc-shaped grooves, two irregular slots, and two spiral blades are an integral structure made of high-strength nylon.

[0008] The beneficial effects of this utility model are:

[0009] 1. It can reduce the friction with the oil pipe, thus protecting the oil pipe;

[0010] 2. The main body of the oil booster is cylindrical rather than square, which greatly reduces the frictional resistance between it and the liquid;

[0011] 3. Because the spiral blades are designed with a variable distance center, they have a strong boosting and fuel-increasing function;

[0012] 4. The oil booster has a scissor mark. When installing, be sure to install it in the direction of the arrow. Do not install it in reverse (first attach the part with the anti-crossing rubber sheet to the sucker rod in the correct direction, then insert the other half and hammer it in. Do not hammer the part with the anti-crossing rubber sheet). Attached image description:

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3 This is a schematic diagram of the internal structure of the valve body of this utility model;

[0016] Figure 4 This is a schematic diagram of the external structure of the valve body of this utility model;

[0017] Figure 5 This is a left view of the valve body of this utility model;

[0018] Figure 6 This is a right view of the valve body of this utility model;

[0019] Figure 7 This is a schematic diagram of the internal structure of the second valve body of this utility model;

[0020] Figure 8 This is a schematic diagram of the external structure of the second valve body of this utility model;

[0021] Figure 9 This is a two-dimensional view of the valve body of this utility model;

[0022] Figure 10 This is a three-dimensional view of the anti-crossing rubber sheet of this utility model. Detailed implementation method:

[0023] Referring to the figures, the present invention specifically adopts the following implementation method: It includes two valve bodies, namely valve body one 1 and valve body two 5. A curved groove one 2 is formed in the valve body one 1, and irregularly shaped inserts 3 are provided on both sides of the curved groove one 2. A spiral blade one 4 is provided on the outer wall of the valve body one 1. A curved groove two 6 is formed in the valve body two 5, and irregularly shaped slots 9 are provided on both sides of the curved groove two 6. An irregularly shaped groove 7 is provided at the bottom of the curved groove two 6, and an anti-crossing rubber sheet 12 is placed in the irregularly shaped groove 7. A spiral blade two 8 is provided on the outer wall of the valve body two 5. The valve body one 1 and valve body two 5 are connected by the irregularly shaped inserts 3 and irregularly shaped slots 9, and the whole is cylindrical. The curved groove one 2 and the curved groove two 6 are spliced ​​to form a sucker rod cylinder 10. The spiral blade one 4 and the spiral blade two 8 are spliced ​​to form a main spiral blade. A liquid flow channel 11 is formed between two adjacent main spiral blades. The bottom width L2 of the main spiral blade is smaller than the top width L1. The valve body 1, arc-shaped groove 2, irregularly shaped insert 3, and spiral blade 4 are an integral structure made of high-strength nylon. The diameter of the middle part of the irregularly shaped groove 7 is larger than the diameters at both ends, and the diameters at both ends are equal to the diameter of the arc-shaped groove 6. The anti-slip rubber sheet 12 has the same shape as the irregularly shaped groove 7, and is thinner at both ends and thicker in the middle. The valve body 5, arc-shaped groove 6, irregularly shaped insert 9, and spiral blade 8 are an integral structure made of high-strength nylon.

[0024] This screw pump-specific drag-reducing and oil-boosting device is mainly composed of two helical high-strength nylon segments, segment 1 and segment 2, as well as an anti-crossing rubber sheet 12.

[0025] The booster is marked with an arrow. Attach the booster to the sucker rod according to the arrow direction and the distance specified by the centralizer. First, attach the anti-slip rubber sheet 12 and the second valve 5 to the sucker rod in the correct direction. Then, attach the first valve 1 and hammer it in. Hammer the irregularly shaped insert 3 into the irregularly shaped slot 9. Do not hammer the second valve 5 with the anti-slip rubber sheet. At this point, the sucker rod is located within the sucker rod tube 10, which is formed by the connection of the first arc groove 2 and the second arc groove 6, and is tightly secured to the sucker rod tube 10. When the sucker rod rotates, because the booster is cylindrical in shape, it does not generate vibrational friction with the inner wall of the tubing, and it also greatly reduces frictional resistance and impact force with the liquid. In addition, the spiral blade 4 and the spiral blade 8 are spliced ​​together to form the main spiral blade. A liquid flow channel 11 is formed between the two adjacent main spiral blades. Since the main spiral blade adopts a centrifugal design that increases in size from small to large, that is, L2 is smaller than L1, the liquid flow channel 11 increases in size from narrow to wide, which can cause the liquid at the bottom to surge upward rapidly and has a strong boosting effect on the liquid. While reducing the torque force of the motor, it can also increase the liquid volume.

[0026] When the sucker rod is pulled upward, it will also pull the anti-slip rubber sheet 12 upward. The anti-slip rubber sheet 12 has the same shape as the irregular groove 7, which is thick in the middle and thin at both ends. When the anti-slip rubber sheet 12 moves upward, it passes through the arc groove 6. Since the diameter of the arc groove 6 is smaller than the middle diameter of the irregular groove 7, the anti-slip rubber sheet 12 will tighten and firmly hold the sucker rod. The friction between the anti-slip rubber sheet 12 and the arc groove 6 causes the entire oil booster to hold the sucker rod tightly and not fall off.

[0027] In summary, this screw pump-specific drag-reducing and oil-boosting device is comprehensive in function and easy to use. It reduces friction with the oil pipe, thus protecting it. The main body of the booster is cylindrical, not square, which greatly reduces frictional resistance with the liquid. Because the helical blades are designed with a variable-distance centroid, it provides a powerful boosting and oil-boosting function. The booster has an arrow marking; during installation, it must be installed in the direction of the arrow and cannot be installed in reverse (first, attach the part with the anti-cross-flow rubber sheet to the sucker rod in the correct direction, then attach the other half and hammer it in; do not hammer the part with the anti-cross-flow rubber sheet).

Claims

1. A drag-reducing and oil-boosting device for screw pumps, characterized in that: It includes two valves, namely valve one (1) and valve two (5). Valve one (1) has an arc-shaped groove one (2) inside, and irregularly shaped inserts (3) are provided on both sides of the arc-shaped groove one (2). The outer wall of valve one (1) is provided with a spiral blade one (4). Valve two (5) has an arc-shaped groove two (6) inside, and irregularly shaped slots (9) are provided on both sides of the arc-shaped groove two (6). The lower part of the arc-shaped groove two (6) is provided with an irregularly shaped groove (7). An anti-crossing rubber sheet (12) is placed in the irregularly shaped groove (7). Valve two (5) The outer wall is provided with a spiral blade (8); the first valve body (1) and the second valve body (5) are connected by a special-shaped plug (3) and a special-shaped slot (9), and the whole is columnar. The first arc groove (2) and the second arc groove (6) are spliced ​​to form a sucker rod cylinder (10). The first spiral blade (4) and the second spiral blade (8) are spliced ​​to form a main spiral blade. A liquid flow channel (11) is formed between two adjacent main spiral blades. The bottom width L2 of the main spiral blade is smaller than the top width L1.

2. The drag-reducing and oil-boosting device for screw pumps according to claim 1, characterized in that: The valve body (1), arc groove (2), irregular insert (3) and spiral blade (4) are an integral structure made of high-strength nylon.

3. The drag-reducing and oil-boosting device for screw pumps according to claim 1, characterized in that: The diameter of the middle part of the irregular groove (7) is larger than the diameter of both ends, and the diameter of both ends is equal to the diameter of the arc groove (6); the shape of the anti-slip rubber sheet (12) is consistent with the shape of the irregular groove (7), and the anti-slip rubber sheet (12) is thin at both ends and thick in the middle.

4. The drag-reducing and oil-boosting device for screw pumps according to claim 1, characterized in that: The second valve body (5), the second arc groove (6), the irregular slot (9) and the second spiral blade (8) are an integral structure made of high-strength nylon.

Images