CN210977441U - Multistage swing type oil-gas-sand separation device - Google Patents

Abstract

The utility model provides a multistage swing oil-gas-sand separation device, which belongs to the field of underground oil extraction auxiliary tool equipment, and comprises a sleeve, wherein the middle upper wall of the sleeve is provided with oil, gas and sand inlet and outlet holes which are uniformly distributed, an oil-gas separation mechanism is arranged above the inner part of the sleeve, the oil-sand separation mechanism is arranged below the inner part of the sleeve, the lower end of the sleeve is fixedly connected with a sand discharge port, the oil-gas separation mechanism is formed by connecting a one-way exhaust valve consisting of a valve body, a ball core and a valve seat, an inner spiral channel consisting of an exhaust pipe, a small spiral guide plate and an oil pipe, a joint and an outer spiral channel consisting of the upper half section of the oil pipe with holes and a large spiral guide plate from top to bottom, the oil-sand separation mechanism consists of the lower half section of the oil pipe with holes, a plurality of flow guide covers and a plurality of sand filtering nets, and provides a separation effect with super-strong capability, the gas well is convenient to maintain, the replacement and maintenance cost is low, and the gas well is not easy to stop production for a long time.

Description

Multistage swing type oil-gas-sand separation device

Technical Field

The utility model belongs to oil recovery appurtenance equipment field in the pit, concretely relates to multistage swing-open type oil gas sand separator.

Background

At present, in the ground engineering of oil and gas well exploitation, oil and gas well produced liquid is mixed fluid consisting of oil, gas and the like, and simultaneously, silt is mixed in the mixed fluid, so that the problem of sand production of natural gas wells and oil wells is gradually serious in the daily operation process of the oil and gas wells, the sand production problem of the natural gas wells and the oil wells causes great damage to ground gathering, transportation and treatment systems, equipment such as downstream pipelines, valves, separators and the like is blocked and corroded, and the sand removal and maintenance workload of the equipment and the pipelines is increased.

The existing separation device cannot be suitable for high-pressure 30000PSI, high erosion working conditions and acidic (CO 2, H2S and HC 1) working conditions, and is originally of a flange mounting structure, so that the separation device is difficult to disassemble and install, a separation barrel in the original structure is easily damaged by impact of gravel, internal equipment is damaged, the separation effect is poor, the replacement and maintenance cost is high, the period is long, and the gas well is stopped for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage formula oil gas sand separator that opens soon aims at solving equipment such as the downstream pipeline among the prior art, valve, separator and blocks up, corrodes, increases equipment, pipeline sand removal and maintenance work volume, and the maintenance cost is higher and the problem that the oil yield is not high.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multistage swing-type oil gas sand separator, includes the sleeve pipe, the even oil of dense cloth, gas, sand business turn over hole has all been seted up to sheathed tube well upper wall, sheathed tube inside top is provided with oil gas separating mechanism, sheathed tube inside below is provided with oil sand separating mechanism, sheathed tube lower extreme fixedly connected with sand discharge opening, its characterized in that: the oil-gas separation mechanism is formed by connecting a one-way exhaust valve consisting of a valve body, a ball core and a valve seat, an internal spiral channel consisting of an exhaust pipe, a small spiral guide plate and an oil pipe, a joint and an external spiral channel consisting of the upper half section of the oil pipe with holes and a large spiral guide plate from top to bottom, the oil-sand separation mechanism consists of the lower half section of the oil pipe with holes, a plurality of flow guide covers, a plurality of sand filtering nets and is fixedly connected to the upper end of a sleeve.

In order to make the valve body be convenient for fixed connection in the cover to and the valve body be convenient for with oil pipe and articulate and dismantle, as the utility model relates to a preferred, the lower extreme of valve body becomes the taper, and the lower extreme of valve body chisels there is the round hole, the up end processing of valve body has the taper screw hole, terminal surface processing has transition taper hole and taper screw hole under the valve body.

In order to make the gaseous upward flow separator of separation, as the utility model relates to an it is preferred, little spiral baffle is fixed to encircle and connects in the circumferential surface of blast pipe, big spiral baffle is fixed to encircle and connects in the circumferential surface of foraminiferous oil pipe, and cuts densely covered bleeder vent on the big spiral baffle.

In order to make the joint connect oil pipe and foraminiferous oil pipe better, the oil circulation of being convenient for, as the utility model relates to an it is preferred, connect the profile to be cylindrical, and the upper and lower both ends face that connects all processes taper pipe screw hole, the center department processing in the middle of connecting inside has a screw thread blind hole, the opening all around of screw thread blind hole chisels the opening that has the equipartition.

Can absorb more oil in order to make the oil pump suction, conduct the utility model relates to an it is preferred, cut on the tubular column of the first half section of foraminiferous oil pipe and have densely distributed oil through hole, the first half section circumference fixed surface of foraminiferous oil pipe is connected with a plurality of kuppes and a plurality of sand screen.

In order to make further separation of oil sand, and oil gets into in the foraminiferous oil pipe, as the utility model relates to an it is preferred, a plurality of kuppes and a plurality of sand screen all become "half cone" form, the kuppe conical surface is whole upwards, sand screen's conical surface is whole downwards.

In order to make the oil that has separated extravagant, can directly be swabbed away by the oil-well pump, as the utility model relates to an it is preferred, the upper end of sand discharge port is provided with the sand discharge valve, the centre disconnection of sand discharge valve, sand discharge valve swing joint is in the sheathed tube inner wall about.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the oil-gas-sand separation is carried out for a plurality of times in the sleeve, and the oil-gas-sand separation device has super strong oil-gas-sand separation capability, more thorough oil-gas-sand separation and higher petroleum yield.

2. The internal structure is simple, and the material is compared in the oil gas sand separator device reduction before, has reduced manufacturing cost and use cost to replacement cost and maintenance cost have also reduced, can reserve more, prevent that certain equipment from having bad, and in time change can not delay oil recovery or gas well shut down.

3. The sand discharge valve is arranged inside the oil pump, so that separated oil is directly sucked by the oil pump, little waste is not easily caused, and even secondary separation is not easily caused.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a partial cross-sectional view of the upper portion of the one-way exhaust valve 18 of the present invention;

fig. 3 is a partial cross-sectional view of the joint 8 of the present invention;

fig. 4 is a partial sectional view of the outer spiral passage 16 of the present invention;

fig. 5 is a partial sectional view of the sand discharge port 14 of the present invention.

In the figure: 1-a valve body; 2-a ball core; 3-valve seat; 4-an exhaust pipe; 5-small spiral guide plate; 6-oil pipe; 7-a sleeve; 8-a linker; 9-oil pipe with hole; 10-large spiral guide plate; 11-a flow guide cover; 12-a sand screen; 13-a base; 14-a sand discharge port; 15-a sand discharge valve; 16-external spiral channel; 17-internal helical channels; 18-one-way exhaust valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the present invention provides the following technical solutions:

in the embodiment of the utility model, including the sleeve 7, the middle upper wall of the sleeve 7 is provided with the oil, gas and sand inlet and outlet holes which are densely and uniformly distributed, so as to facilitate the oil, gas and sand to enter in a large amount, the upper part of the inside of the sleeve 7 is provided with the oil-gas separation mechanism, the oil-gas separation mechanism is formed by connecting a one-way exhaust valve 18 which is composed of the valve body 1, the ball core 2 and the valve seat 3, an inner spiral channel 17 which is composed of the exhaust pipe 4, the small spiral guide plate 5 and the oil pipe 6, a joint 8 and an outer spiral channel 16 which is composed of the upper half section of the oil pipe 9 with holes and the large spiral guide plate 10 from top to bottom, the one-way exhaust valve 18 is composed of the valve body 1, the ball core 2 and the valve seat 3, the outline of the valve body 1 is cylindrical, the lower end is provided with a boss, the inclined exhaust hole and external thread are processed on, the oil-water separator is connected with an oil pump, a transition taper hole and a taper pipe threaded hole are processed on the lower end face of a valve body 1 and are connected with an oil pipe 6, a threaded valve cavity hole is formed in the middle upper portion of the valve body 1, flow holes are evenly distributed on the periphery of the valve cavity hole, 1-2 inclined holes are formed among the evenly distributed flow holes and are communicated with a valve cavity hole in the middle, a round hole is formed in the middle lower portion of the valve body 1 and is used for accommodating a valve seat 3, the valve seat 3 is a hollow rotating body and is arranged on the middle lower portion of the valve body 1, the upper end of the valve seat 3 is connected with the valve cavity hole in the middle of the valve body 1 through threads, a ball core 2 is a smooth polytetrafluoroethylene ball and is arranged in the valve cavity hole in the middle of the valve body 1 and at the upper end of the valve seat.

The internal spiral channel 17 consists of an exhaust pipe 4, a small spiral guide plate 5 and an oil pipe 6, wherein the upper end of the exhaust pipe 4 is opened and is inserted into the valve seat 3 of the one-way exhaust valve 18, and the lower end of the exhaust pipe is provided with an external thread which is connected with a threaded blind hole in the center of the joint 8; the side of the exhaust pipe 4 is densely covered with vent holes from top to bottom and is surrounded by a small spiral guide plate 5, outer conical threads are respectively processed at the upper end and the lower end of an oil pipe 6 and are respectively connected with conical pipe threaded holes at the lower end of the valve body 1 and the upper end of a joint 8, the exhaust pipe 4 and the small spiral guide plate 5 are contained in the pipe, an inner spiral channel 17 is formed between the exhaust pipe 4 and the oil pipe 6 and is used for carrying out oil-gas separation on passing oil, the joint 8 is a conversion piece of the inner spiral channel 17 and an outer spiral channel 16, the outer contour is cylindrical, conical pipe threaded holes are respectively processed at the upper end surface and the lower end surface and are respectively used for connecting the oil pipe 6 and an oil pipe 9 with holes, a threaded blind hole is processed at the center in the middle of the interior and is used for installing the exhaust pipe 4, and flow holes.

The external spiral channel 16 is composed of the upper half section of the oil pipe 9 with holes and the large spiral guide plate 10, the upper end of the oil pipe 9 with holes is connected with the taper pipe threaded hole on the lower end face of the joint 8 through the taper pipe external thread, the upper half section of the oil pipe 9 with holes is smooth and has no holes, the external spiral channel 16 is formed around the large spiral guide plate 10 and between the large spiral guide plate and the sleeve 7, oil, gas and sand entering from the hole on the upper middle part of the sleeve 7 are subjected to oil-gas separation, and the inner edge of the continuous surface of the large spiral guide plate 10 is densely distributed with air holes so that the separated gas can flow out of the separator upwards.

An oil-sand separating mechanism is arranged below the inner part of the sleeve 7, the oil-sand separating mechanism consists of a lower half section of the oil pipe 9 with holes, a plurality of flow guide sleeves 11, a plurality of sand filtering nets 12 and a base 13, oil penetrating holes are densely distributed on a pipe column of the lower half section of the oil pipe 9 with holes, and the cumulative area of the densely distributed oil penetrating holes is larger than the inner hole sectional area of the oil pipe 9 with holes. The multiple air guide hoods 11 and the single-layer sand filtering net 12 cover the lower half section of the oil pipe 9 with the hole, the conical surfaces of the air guide hoods 11 are all upward, the conical surfaces of the sand filtering net 12 are all downward, sand grains blocked on the sand filtering net 12 can be automatically removed under the action of gravity and backflow during the circulating work of an oil well pump, transitional circular steps are machined at the top end and the bottom end of the conical surfaces of the air guide hoods 11, circular grooves are machined on the circular steps, and the circular steps at the top end of each air guide hood 11 are connected with the oil pipe 9 with the hole through a method of spot welding at intervals. The sand filtering nets 12 are arranged in a single layer, the parts fixedly overlapped with the air guide sleeve 11 are removed, the penetrating area of the sand filtering nets is larger than the accumulated area of oil penetrating holes densely distributed on the lower half section of the tubular column of the oil pipe 9 with holes, so that the enough oil penetrating amount is ensured, and the sand filtering net at the lowest end is fixedly connected to the upper end of the base 13.

The lower extreme fixedly connected with sand discharge port 14 of sleeve pipe 7, the sand after the separation is discharged from sand discharge port 14 owing to blockking of sand screen 12 and action of gravity, and this device most just uses threaded connection, and convenient to detach regular maintenance to and the part is bad in time to be changed later, can not recover the oil progress.

Specifically, referring to fig. 1-5, the lower end of the valve body 1 is tapered, a circular hole is cut in the lower end of the valve body 1, a taper pipe threaded hole is processed in the upper end face of the valve body 1, and a transition taper hole and a taper pipe threaded hole are processed in the lower end face of the valve body 1.

In this embodiment: the lower end of the valve body 1 is tapered so as to be fixedly connected to the inner wall of the sleeve 7, and a transition taper hole and a taper pipe threaded hole are processed on the lower end face of the valve body 1 so as to be connected with and detached from the oil pipe 6 and the joint 8.

Specifically, referring to fig. 1-5, the small spiral guide plate 5 is fixedly connected to the circumferential surface of the exhaust pipe 4, the large spiral guide plate 10 is fixedly connected to the circumferential surface of the oil pipe 9 with holes, and the large spiral guide plate 10 is densely perforated with air holes.

In this embodiment: the small spiral guide plate 5 and the large spiral guide plate 10 can break bubbles in the oil layer, so that the gas oil and the gas can be better separated and flow upwards.

Specifically, referring to fig. 1-5, the connector 8 has a cylindrical shape, tapered tube threaded holes are formed in the upper and lower end surfaces of the connector 8, a threaded blind hole is formed in the center of the middle inside the connector 8, and uniformly distributed through holes are formed in the periphery of the threaded blind hole.

In this embodiment: the joint 8 is used as a conversion piece of the inner spiral channel 17 and the outer spiral channel 16, plays a role of connecting the oil pipe 6 and the oil pipe 9 with holes, and enables oil to flow more smoothly through the threaded blind holes drilled by the joint.

Specifically, referring to fig. 1 to 5, the plurality of air guide hoods 11 and the plurality of sand screens 12 are in a shape of a semi-circular cone, the conical surfaces of the air guide hoods 11 are all upward, and the conical surfaces of the sand screens 12 are all downward.

In this embodiment: the air guide sleeve 11 plays a role in guiding water in hungry, and the sand filter 12 plays a role in separating oil and sand.

Specifically, please refer to fig. 1-5, a sand discharge valve 15 is disposed at the upper end of the sand discharge port 14, the middle of the sand discharge valve 15 is disconnected, and two movable links of the sand discharge valve 15 are connected to the left and right inner walls of the casing 7.

In this embodiment: the sand discharge valve 15 plays a role in controlling the sand discharge of the sand discharge port 14, and when separated sand is accumulated to a certain degree, the separated oil cannot be discharged along with the sand due to gravity and automatic opening, so that secondary separation is avoided.

The utility model discloses a theory of operation and use flow: the mixed liquid of natural oil (solid line arrow), gas (dotted line arrow) and sand (dotted line arrow) enters a separator from holes densely distributed at the middle upper part of a casing 7, bubbles are firstly broken when flowing downwards along the annular space of an oil pipe 6 and the casing 7 under the action of gravity, the bubbles float upwards after being separated from oil sand, the oil sand is discharged from the lower end of a valve body 1, the oil sand flows downwards through a joint 8 and enters an outer spiral channel 16, medium bubbles in an oil layer are broken under the distributing action of a large spiral guide plate 10, gas passes through air holes at the inner edge of the large spiral guide plate 10 and flows upwards out of the separator, the oil sand continues to flow downwards along the outer edge of the large spiral guide plate 10 and enters an oil-sand separating mechanism, the conditions of sand outside and oil inside can be formed when the oil sand flows downwards along the conical surface of a guide cover 11 due to different specific gravities of the oil sand, when oil is pumped by an oil pump, the oil passes through a, sand is piled up on the sand discharge valve 15 under the effect of stopping and gravity of the sand screen 12, and is discharged through the sand discharge port 14 when reaching a certain amount, and the oil that moves up enters into the internal spiral channel 17 through the circulation hole of the inside equipartition of joint 8, under the effect of the allocation of little spiral guide plate 5, splits the tiny bubble that contains, and gas gets into middle exhaust pipe 4, upwards promotes ball core 2 and discharges the separator, and oil is under the effect of centrifugal force, upwards through the periphery of valve seat 3 and the circulation hole of valve body 1 along the outward edge of little spiral guide plate 5, gets into the oil-well pump output well outside.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a multistage swing-type oil gas sand separator, includes sleeve pipe (7), the well upper wall of sleeve pipe (7) has all been seted up and has been distributed even oil, gas, sand business turn over hole, the inside top of sleeve pipe (7) is provided with oil gas separating mechanism, the inside below of sleeve pipe (7) is provided with oil sand separating mechanism, the lower extreme fixedly connected with sand discharge port (14) of sleeve pipe (7), its characterized in that: the oil-gas separation mechanism is formed by connecting a one-way exhaust valve (18) consisting of a valve body (1), a ball core (2) and a valve seat (3), an inner spiral channel (17) consisting of an exhaust pipe (4), a small spiral guide plate (5) and an oil pipe (6), a joint (8) and an outer spiral channel (16) consisting of an upper half section of a perforated oil pipe (9) and a large spiral guide plate (10) from top to bottom, and consists of a lower half section of the perforated oil pipe (9), a plurality of flow guide covers (11), a plurality of sand filtering nets (12) and a base (13), wherein the lower end of the valve body (1) is fixedly connected to the upper end of a sleeve (7).

2. The multi-stage swing type oil-gas-sand separation device according to claim 1, wherein: the lower end of the valve body (1) is conical, a round hole is formed in the lower end of the valve body (1) in a chiseled mode, a taper pipe threaded hole is formed in the upper end face of the valve body (1), and a transition taper hole and a taper pipe threaded hole are formed in the lower end face of the valve body (1).

3. The multi-stage swing type oil-gas-sand separation device according to claim 2, wherein: little spiral guide plate (5) fixed ring is connected in the circumferential surface of blast pipe (4), big spiral guide plate (10) fixed ring is connected in the circumferential surface of foraminiferous oil pipe (9), and digs densely covered bleeder vent on big spiral guide plate (10).

4. The multi-stage swing type oil-gas-sand separation device according to claim 3, wherein: the connector (8) is cylindrical in outline, conical pipe threaded holes are machined in the upper end face and the lower end face of the connector (8), a threaded blind hole is machined in the center of the interior of the connector (8), and uniformly distributed circulation holes are drilled in the periphery of the threaded blind hole.

5. The multi-stage swing type oil-gas-sand separation device according to claim 4, wherein: the lower half section of the tubular column of the oil pipe (9) with holes is provided with densely distributed oil penetrating holes, and the lower half section of the circumferential surface of the oil pipe (9) with holes is fixedly connected with a plurality of air guide sleeves (11) and a plurality of sand filtering nets (12).

6. The multi-stage swing type oil-gas-sand separation device according to claim 5, wherein: the air guide sleeves (11) and the sand filtering nets (12) are semi-conical, the conical surfaces of the air guide sleeves (11) are all upward, and the conical surfaces of the sand filtering nets (12) are all downward.

7. The multi-stage swing type oil-gas-sand separation device according to claim 6, wherein: the upper end of the sand discharge port (14) is provided with a sand discharge valve (15), the middle of the sand discharge valve (15) is disconnected, and the sand discharge valve (15) is movably connected to the left inner wall and the right inner wall of the sleeve (7).

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