CN204476387U - The oil gas sand separator of efficient energy-saving - Google Patents

Abstract

An energy-saving and high-efficiency oil-gas-sand separator includes a casing, an oil-gas separation mechanism located in the middle and upper part of the casing, an oil-sand separation mechanism in the lower part, and a bottom cone joint. The oil-gas separation mechanism is a one-way exhaust valve composed of a valve body, a ball core, and a valve seat, an inner spiral channel composed of an exhaust pipe, a small spiral guide plate, and an oil pipe, a joint, and an upper valve composed of a perforated oil pipe. The outer spiral channel composed of half section and large spiral guide plate is connected from top to bottom; the oil sand separation mechanism consists of the lower half section of the perforated oil pipe, several diversion covers, single-layer sand filter screen and multiple steel The two ends of the sleeve are respectively connected to the lower end of the valve body in the one-way exhaust valve and the upper end of the bottom cone joint to form a whole by threading or welding. It not only has the functions of three-stage oil-gas separation, one-stage oil-sand separation, and automatic plugging removal, but also has the advantages of less consumables, low cost, smooth passage, small resistance, low energy consumption, and high output.

Description

Energy-saving and efficient oil-gas-sand separator

Technical field

The utility model relates to petroleum machinery, an auxiliary tool for an oil well pump and an improvement of an oil-gas-sand separator.

Background technique

The oil in the well contains harmful gas and sand particles, which will reduce the working efficiency of the oil well pump and accelerate the wear of the oil well pump parts; in severe cases, the sand particles will also block the oil well pump. Therefore, installing an oil-gas-sand separator under the oil pump can effectively increase oil production, reduce wear and tear of the oil pump, and prolong its service life. The oil and gas sand separator products currently on the market are similar in shape, but their internal structures are different, and their performance varies greatly. The "Multi-stage Swing Type Oil-Gas-Sand Separator (Patent No.: ZL200520002825.3)" product developed by our company is welcomed by users for its excellent oil-gas-sand separation effect; but in long-term use, it is also found that this product has The oil flow resistance is relatively large, and the energy consumption of the oil well pump is relatively high. Through the analysis, it can be seen that the two one-way exhaust valves in the upper oil-gas separation mechanism of the product, the inner and outer two layers of sand filter screens in the lower oil-sand separation mechanism, two layers of perforated oil penetration pipes, and the sand filter screen are easy to block , are the main reasons for increasing oil flow resistance and energy consumption, and it is necessary to improve them.

Contents of the invention

The purpose of the utility model is to improve the unreasonable structure of the above product, reduce the oil flow resistance and the working energy consumption of the oil pump while maintaining its excellent oil-gas-sand separation effect, and increase its output.

The utility model includes a casing, an oil-gas separation mechanism located in the middle and upper part of the casing, an oil-sand separation mechanism and a bottom cone joint in the lower part. The difference is that the oil-gas separation mechanism is a valve body, a ball core, a valve seat A one-way exhaust valve composed of an inner spiral passage composed of an exhaust pipe, a small spiral guide plate, and an oil pipe, a joint, and an outer spiral passage composed of the upper half of the oil pipe with holes and a large spiral guide plate, from the top The oil-sand separation mechanism is composed of the lower half of the perforated oil pipe, several diversion covers, a single-layer sand filter screen, multiple steel wires, and a faceplate; the two ends of the casing , respectively connected to the lower end of the valve body in the one-way exhaust valve and the upper end of the bottom cone joint to form a whole by threading or welding.

Because the utility model changes the two sets of one-way exhaust valves and the matching internal spiral passages in the original product into one set of one-way exhaust valves and internal spiral passages; The combination of oil penetration pipes is changed to one layer of sand screen and one layer of perforated oil pipes. It not only maintains the oil, gas, and sand separation function of the original product, reduces the consumption of metal materials and cutting processing, and reduces the production and use costs; but also makes the oil channel more smooth, the flow resistance is smaller, and the energy consumption of oil pumping is lower. , Higher oil output; together with the improvement of other details, make it more outstanding in performance and stronger in applicability.

Description of drawings

Fig. 1 is the full cut-away schematic diagram of the utility model general structure height simplification;

Fig. 2 is that the overall structure of the present utility model is divided into two, and the full sectional schematic diagram that the upper part is moderately streamlined;

Fig. 3 is the whole sectional schematic diagram that the overall structure of the utility model is divided into two, and the lower half is moderately streamlined.

The names of the parts indicated by the numbers in the figure are as follows:

A. One-way exhaust valve, B. Inner spiral passage, C. Outer spiral passage, 1. Valve body, 2. Ball core, 3. Valve seat, 4. Exhaust pipe, 5. Small spiral guide plate, 6. Oil pipe , 7, casing, 8, connector, 9, perforated oil pipe, 10, large spiral guide plate, 11, diversion cover, 12, sand filter screen, 13, steel binding wire, 14, faceplate, 15, bottom cone joint.

Detailed ways

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

Among Fig. 1, the utility model can be divided into according to its function: sleeve pipe (7), be positioned at the oil-gas separation mechanism of middle and upper part in casing pipe (7), the oil-sand separation mechanism of lower part and bottom cone joint (15). The side wall of the middle and upper part of the casing (7) is covered with a plurality of inlet holes for oil, gas and sand, and the two ends are respectively connected to the valve body (1) of the one-way exhaust valve (A) by threading or welding. The lower end and the upper end of the bottom cone joint (15) are connected as a whole.

In Fig. 2, the oil-gas separation mechanism consists of a one-way exhaust valve (A), an inner helical channel (B), a joint (8), and an outer helical channel (C), connected from top to bottom. Among them: one-way exhaust valve (A) is composed of valve body (1), ball core (2) and valve seat (3); the outline of valve body (1) is cylindrical, with a boss at the lower end, the boss There are inclined exhaust holes and external threads processed on the upper surface, which are used to connect with the upper end of the casing (7); the upper end surface of the valve body (1) is processed with taper pipe threaded holes, which are used to connect with the oil well pump; the lower end surface of the valve body (1) The transition taper hole and taper pipe threaded hole are processed to connect with the oil pipe (6); the middle and upper part of the valve body (1) has a threaded valve cavity hole in the center, and evenly distributed flow holes around the valve cavity hole. Between the evenly distributed flow holes, there are 1 to 2 oblique holes communicating with the valve cavity hole in the middle; the middle and lower part of the valve body (1) is a large round hole, which is used to accommodate the valve seat (3); the valve seat ( 3) It is a hollow rotating body, placed in the middle and lower part of the valve body (1), and the upper end is connected with the valve cavity hole in the middle of the valve body (1) through threads; the ball core (2) is a smooth polytetrafluoroethylene ball , placed on the upper port of the valve seat (3) and the valve cavity hole in the middle of the valve body (1), under the push of the gas, it can move upward to discharge the gas out of the separator. The inner spiral channel (B) is composed of an exhaust pipe (4), a small spiral guide plate (5), and an oil pipe (6); the upper end of the exhaust pipe (4) is open, inserted into the one-way exhaust valve (A) The lower end of the valve seat (3) is processed with external thread, which is connected with the threaded blind hole in the center of the joint (8); the side of the exhaust pipe (4) is densely covered with air holes from top to bottom, and is covered by a small spiral guide plate. Surrounded by (5); the upper and lower ends of the oil pipe (6) are processed with external taper threads, which are respectively connected with the lower end of the valve body (1) and the taper pipe threaded holes on the upper end of the joint (8), and the exhaust pipe (4) ) and a small spiral guide plate (5) are included in the pipe to form an inner spiral channel (B) between the exhaust pipe (4) and the oil pipe (6) to separate the oil and gas from the passing oil. The joint (8) is a transition piece between the inner helical channel (B) and the outer helical channel (C); the outer profile is cylindrical, and taper pipe threaded holes are processed on the upper and lower ends, respectively used to connect the oil pipe (6) and the belt Hole oil pipe (9); The central place in the middle of the inside is processed with a threaded blind hole for installing exhaust pipe (4); Around the threaded blind hole are evenly distributed circulation holes, so that the oil passes through. The outer spiral channel (C) is composed of the upper half of the perforated oil pipe (9) and the large spiral guide plate (10); the upper end of the perforated oil pipe (9) passes through the tapered pipe external thread and the cone on the lower end surface of the joint (8). The pipe threaded holes are connected; the upper half of the perforated oil pipe (9) is smooth and has no holes, surrounds the large spiral guide plate (10), and forms an outer spiral channel (C) with the casing (7). 7) The oil, gas, and sand that enter the middle and upper holes are separated from oil and gas; the inner edge of the continuous surface of the large spiral guide plate (10) is densely covered with air holes, so that the separated gas can flow out of the separator upwards.

In Fig. 3, the oil-sand separation mechanism consists of the lower half of the perforated oil pipe (9), several flow deflectors (11), single-layer sand filter screens (12) and multiple steel wires (13), and a Composed of flower discs (14). Oil penetration holes are densely distributed on the pipe string of the lower half of the oil pipe with holes (9), and the cumulative area of the densely distributed oil penetration holes is greater than the inner hole cross-sectional area of the oil pipe with holes (9). Several diversion covers (11) and single-layer sand filter screens (12) covering the lower half of the perforated tubing (9) have all the conical surfaces of the diversion covers (11) upwards, and the sand filter screens The conical surfaces of (12) are all downward; during the cycle work of the oil well pump, under the effect of gravity and backflow, the sand grains blocked on the sand screen (12) can be automatically removed. The top and the bottom of the conical surface of the shroud (11) are all processed with transitional circular steps, and an arc groove is all processed on the circular steps, so that the sand filter screen (12) is fixed with steel binding wire (13); The circular step place at the top of each wind deflector (11) is all connected with the perforated oil pipe (9) with the method of spot welding at intervals. Several single-layer sand filter screens (12), except for the part fixedly overlapping with the shroud (11), have a penetrating area greater than the cumulative area of the oil penetration holes densely distributed on the lower half of the perforated tubing (9), To ensure sufficient oil penetration. There is no hole in the middle of the flower disc (14), and there is a concentric circle on the upper end surface, so that it can be placed on the bottom end of the perforated oil pipe (9), and fixed by spot welding at intervals; an arc groove is processed on the outer circle of the concentric circle, so that it can be used Steel binding wire (13) fixes the sand filter screen (12); On the outer edge of the concentric circle, several flow holes are evenly distributed, so that the oil sand goes in and out.

During work, natural oil (solid line arrow), gas (dotted line arrow) and sand (dotted line arrow) mixed liquid enter the separator from the densely distributed holes in the upper part of the casing (7), and under the action of gravity, along the When the annular space of the oil pipe (6) and the casing (7) flows downward, the large air bubbles break first, separate from the oil sand and float up, and are discharged from the inclined hole at the boss at the lower end of the valve body (1); the oil sand descends through The outer circle of the joint (8) enters the outer spiral channel (C); under the sharing action of the large spiral guide plate (10), the medium air bubbles in the oil layer are broken, and the gas passes through the air holes on the inner edge of the large spiral guide plate (10), It flows out of the separator upwards; the oil sand continues to descend along the outer edge of the large spiral guide plate (10) and enters the oil sand separation mechanism. Due to the different specific gravity of the oil sand, when going down along the conical surface of the shroud (11), the situation that the sand is outside and the oil is inside will be formed; Enter the perforated oil pipe (9) and go up, and the sand is discharged through the bottom cone joint (15) under the blocking of the sand filter screen (12) and the effect of gravity. The ascending oil passes through the evenly distributed flow holes inside the joint (8) and enters the inner spiral channel (B). Under the sharing action of the small spiral guide plate (5), the contained small air bubbles are split, and the gas enters the middle exhaust The steam pipe (4) pushes the ball core (2) upward to discharge the separator; under the action of centrifugal force, the oil moves upward along the outer edge of the small spiral guide plate (5), passes through the periphery of the valve seat (3) and the valve body (1 ) through the flow hole and enter the output well of the oil pump.

Claims (4)

1. the oil gas sand separator of efficient energy-saving, comprise sleeve pipe, be positioned at the oil-gas separation mechanism that sleeve pipe middle and upper part is divided, the oil-sand separation mechanism of lower part and base cone joint, it is characterized in that: oil-gas separation mechanism be one by valve body (1), ball core (2), the one-way exhaust valve (A) that valve seat (3) forms, one by stack (4), minor spiral guide plate (5), the inside spin passage (B) that oil pipe (6) forms, a joint (8), and a upper semisection by oil pipe with holes (9), the external spiral passage (C) that king bolt guide plate (10) forms, top-down connection forms, oil-sand separation mechanism by the lower semisection of oil pipe with holes (9), the filter sand net (12) of several kuppe (11), individual layer and many steel tied silks (13), and a floral disc (14) formed, the two ends of sleeve pipe (7), by the method for screw thread or welding, are connected into an entirety with the lower end of valve body (1) in one-way exhaust valve (A) and the upper end of base cone joint (15) respectively.

2. oil gas sand separator according to claim 1, it is characterized in that: in oil-sand separation mechanism, the tubing string of oil pipe with holes (9) lower semisection is thick with oil permeable hole, and the inner hole section that densely covered oil permeable hole cumulative area is greater than oil pipe with holes (9) amasss.

3. oil gas sand separator according to claim 1, it is characterized in that: in oil-sand separation mechanism, cover the filter sand net (12) of several kuppes (11) on oil pipe with holes (9) lower semisection tubing string and individual layer, all upwards, the conical surface of filter sand net (12) is all downward for the conical surface of its kuppe (11).

4. oil gas sand separator according to claim 1, it is characterized in that: in oil-sand separation mechanism, the filter sand net (12) of several individual layer, remove overlapping part fixing with kuppe (11), its penetrating area is greater than the oil permeable hole cumulative area that oil pipe with holes (9) lower semisection tubing string gathers.