Shale oil high-sulfur flowing well ground desulfurization device

Abstract

The utility model relates to the field of oilfield development, and discloses a shale oil high-sulfur flowing well ground desulfurization device which comprises a mixing tank, a support frame, a desulfurizer spraying mechanism, a transition pipeline, an S-shaped distributed ground desulfurization pipeline group and a buffer pool, the S-shaped arrangement ground desulfurization pipeline group comprises a plurality of desulfurization pipelines which are laid on the ground and are parallel to one another and pipe bending mechanisms which are connected with corresponding position ports of the adjacent desulfurization pipelines. The device is simple in structure, small in equipment fixing investment and low in operation cost, and has good economic benefits; the flow velocity is delayed through gravity oil discharge, the flow in the pipeline is increased and the time is prolonged by additionally arranging the S-shaped distributed ground desulfurization pipeline group formed by the bent pipes, and homogenization is performed through the buffer pool, so that shale oil and a desulfurizer are fully and uniformly mixed, the desulfurization effect is better, and the safety production is better guaranteed; the S-shaped arrangement mode of the ground desulfurization pipelines is small in occupied area, land space is saved, and good resource utilization benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield development field, concretely relates to a shale oil high sulfur self -priming well ground desulfurization device. BACKGROUND

[0002] Shale oil refers to the oil resources contained in shale layer system dominated by shale, including the oil in the pores and cracks of shale, and the oil resources in the adjacent and interbedded layers of the dense carbonatite or clastic rock in shale layer system. In order to ensure safety in production, single well large-scale wet desulfurization, dry desulfurization and other treatment processes have been used, but there are problems such as large fixed equipment investment and high operation cost, which affect the development benefit. Therefore, how to develop a shale oil desulfurization device with small fixed equipment investment and low operation cost is an important and urgent technical problem to be solved. CONTENT OF UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides a shale oil high sulfur self -priming well ground desulfurization device, and the technical scheme is as follows:

[0004] A shale oil high sulfur self -priming well ground desulfurization device, which comprises a mixing tank, a support frame, a desulfurizer spraying mechanism, a transition pipeline, an S-shaped arrangement ground desulfurization pipeline group and a buffer pool. The mixing tank is installed above the support frame, an oil inlet is arranged at the top of the side wall of the mixing tank, an oil outlet is arranged at the bottom of the side wall of the mixing tank, and the desulfurizer spraying mechanism is hung directly above the mixing tank. The upper end of the transition pipeline is connected with the oil outlet of the mixing tank, and the lower end is connected with the oil inlet of the S-shaped arrangement ground desulfurization pipeline group. The S-shaped arrangement ground desulfurization pipeline group comprises a plurality of parallel desulfurization pipelines laid on the ground and elbow mechanisms connecting the corresponding position ports of adjacent desulfurization pipelines. The last elbow mechanism and the next elbow mechanism are located at the front end direction and the rear end direction of the desulfurization pipeline respectively according to the oil flow direction. All the desulfurization pipelines are connected in sequence by the elbow mechanisms to form the S-shaped arrangement pipeline group. The buffer pool is located below the ground, and the tail end of the pipeline group leads to the buffer pool.

[0005] Further, the elbow mechanism comprises a left connector, a left pipe clamp, a left elbow, a middle pipe clamp, a right elbow, a right pipe clamp and a right connector. The left connector and the right connector are the same in structure and each comprises a short section and an outward protruding end. The left elbow and the right elbow are the same in structure and each comprises an elbow body and two outward protruding ends. The short section of the left connector is fixed with the end of the left pipeline, the outward protruding end of the left connector is connected with one outward protruding end of the left elbow and is fixed around by the left pipe clamp, the other outward protruding end of the left elbow is connected with one outward protruding end of the right elbow and is fixed around by the middle pipe clamp, and the short section of the right connector is fixed with the end of the right pipeline, the outward protruding end of the right connector is connected with the other outward protruding end of the right elbow and is fixed around by the right pipe clamp.

[0006] Further, the left elbow and the right elbow are both ninety-degree elbows.

[0007] Further, the left pipe clamp, the middle pipe clamp and the right pipe clamp are identical in structure, each comprising an upper arc-shaped clamping piece and a lower arc-shaped clamping piece which are buckled together, and each of the upper arc-shaped clamping piece and the lower arc-shaped clamping piece is provided with a corresponding through hole, and the upper arc-shaped clamping piece and the lower arc-shaped clamping piece are connected by a bolt penetrating through the through holes and fastened by a nut.

[0008] Further, each of the upper arc-shaped clamping piece and the lower arc-shaped clamping piece is provided with two through holes and is equipped with corresponding bolts and nuts.

[0009] Further, the left pipe clamp, the middle pipe clamp and the right pipe clamp further comprise a sealing ring which is sleeved around the two abutting outer convex ends, and the upper arc-shaped clamping piece and the lower arc-shaped clamping piece jointly wrap the sealing ring.

[0010] Further, the S-shaped arrangement ground desulfurization pipeline group is provided with an inner lining pipe made of ultra-high molecular weight polyethylene.

[0011] Further, the desulfurizer spraying mechanism comprises a spiral nozzle.

[0012] Further, the transition pipeline is provided with a stop valve.

[0013] Further, the oil outlet of the mixing tank is more than one meter away from the ground.

[0014] Compared with the prior art, the utility model mainly has the following beneficial technical effects:

[0015] 1. The utility model has the advantages of simple structure, small equipment fixed investment, low running cost and good economic benefit.

[0016] 2. The utility model delays the flow rate through gravity oil unloading, increases the flow and time in the pipeline through the S-shaped arrangement ground desulfurization pipeline group formed by the additional elbow, and makes the shale oil and the desulfurizer fully mix and be uniform through the buffer tank, so that the desulfurization effect is better and the safety production is more guaranteed.

[0017] 3. The S-shaped arrangement mode of the ground desulfurization pipeline has the advantages of small land occupation area, saved land space and good resource utilization benefit.

[0018] 4. The utility model greatly enhances the corrosion resistance and other performances of the pipeline through the setting of the ultra-high molecular weight polyethylene inner lining pipe, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure layout schematic view of the utility model;

[0020] Figure 2 It is an S-shaped arrangement ground desulfurization pipeline group structure layout schematic view of the utility model;

[0021] Figure 3 Figure is a cross-sectional structure diagram of the left pipe clamp, the middle pipe clamp and the right pipe clamp of the present application;

[0022] In the figure: 1 - oil inlet, 2 - desulfurizer spraying mechanism, 3 - mixing tank, 4 - stop valve, 5 - transition pipeline, 6 - buffer pool, 7 - oil outlet, 8 - support frame, 9 - outer convex end, 10 - through hole, 11 - short section, 12 - desulfurization pipeline, 13 - right pipe clamp, 14 - right elbow, 15 - middle pipe clamp, 16 - left elbow, 17 - left pipe clamp, 18 - elbow body, 19 - left joint, 20 - right joint, 21 - upper arc-shaped clamping piece, 22 - lower arc-shaped clamping piece, 23 - sealing ring, 24 - ground. DETAILED DESCRIPTION

[0023] The present application will be described in detail below with reference to examples and the accompanying drawings. Example 1

[0024] Referring to Figure 1 , Figure 2 and Figure 3 . A shale oil high-sulfur self-flowing well ground desulfurization device comprises a mixing tank 3, a support frame 8, a desulfurizer spraying mechanism 2, a transition pipeline 5, an S-shaped arrangement ground desulfurization pipeline group and a buffer pool 6; the mixing tank 3 is installed above the support frame 8, the top of the side wall of the mixing tank 3 is provided with an oil inlet 1, the bottom of the side wall of the mixing tank 3 is provided with an oil outlet 7, and the desulfurizer spraying mechanism 2 is hung directly above the mixing tank 3; the upper end of the transition pipeline 5 is connected to the oil outlet 7 of the mixing tank 3, and the lower end is connected to the oil inlet of the S-shaped arrangement ground desulfurization pipeline group; the S-shaped arrangement ground desulfurization pipeline group comprises a plurality of parallel desulfurization pipelines 12 laid on the ground 24 and an elbow mechanism connecting the corresponding position ports of adjacent desulfurization pipelines 12; the last elbow mechanism and the next elbow mechanism are located at the front end direction and the rear end direction of the desulfurization pipeline 12, respectively, according to the oil flow direction; all desulfurization pipelines 12 are connected in sequence through the elbow mechanism to form an S-shaped arrangement pipeline group; the buffer pool 6 is located below the ground 24, and the tail end of the pipeline group leads to the buffer pool 6. The elbow mechanism comprises a left joint 19, a left pipe clamp 17, a left elbow 16, a middle pipe clamp 15, a right elbow 14, a right pipe clamp 13 and a right joint 20; the left joint 19 and the right joint 20 are the same in structure and each comprises a short section 11 and an outer convex end 9; the left elbow 16 and the right elbow 14 are the same in structure and each comprises an elbow body 18 and two outer convex ends 9; the short section 11 of the left joint 19 is fixed with the left pipeline end, the outer convex end 9 of the right joint 20 is connected with one outer convex end 9 of the left elbow 16 and is fixed from the periphery by the left pipe clamp 17; the other outer convex end of the left elbow 16 is connected with one outer convex end 9 of the right elbow 14 and is fixed from the periphery by the middle pipe clamp 15; the short section 11 of the right joint 20 is fixed with the right pipeline end, and the outer convex end 9 of the right joint 20 is connected with the other outer convex end 9 of the right elbow 14 and is fixed from the periphery by the right pipe clamp 13. Embodiment 2

[0025] Referring to Figure 1 , Figure 2 and Figure 3 . The shale oil high-sulfur self-flowing well ground desulfurization device, on the basis of the technical solutions described in Embodiment 1, the left elbow pipe 16 and the right elbow pipe 14 are both 90-degree elbow pipes, so that the pipeline layout is more compact and space-saving; the left pipe clamp 17, the middle pipe clamp 15 and the right pipe clamp 13 are the same in structure and each includes an upper arc-shaped clamping piece 21 and a lower arc-shaped clamping piece 22 that are buckled together, both ends of the upper arc-shaped clamping piece 21 and the lower arc-shaped clamping piece 22 are provided with corresponding through holes 10, and the upper arc-shaped clamping piece 21 and the lower arc-shaped clamping piece 22 are connected by penetrating the through holes 10 with bolts and fastened by nuts; both ends of the upper arc-shaped clamping piece 21 and the lower arc-shaped clamping piece 22 are provided with two through holes 10 for uniform fixing. Embodiment 3

[0026] Referring to Figure 1 , Figure 2 and Figure 3 . The shale oil high-sulfur self-flowing well ground desulfurization device, on the basis of the technical solutions described in Embodiment 2, the left pipe clamp 17, the middle pipe clamp 15 and the right pipe clamp 13 further include a sealing ring 23, the sealing ring 23 is sleeved around the two butt-jointed outer convex ends 9, and the upper arc-shaped clamping piece 21 and the lower arc-shaped clamping piece 22 jointly wrap the sealing ring 23 from top to bottom. The arrangement of the sealing ring 23 makes the sealing effect of the two butt-jointed outer convex ends 9 better, fundamentally preventing leakage from occurring. Embodiment 4

[0027] Referring to Figure 1 , Figure 2 and Figure 3 . The shale oil high-sulfur self-flowing well ground desulfurization device, on the basis of the technical solutions described in Embodiment 1, the S-shaped arrangement ground desulfurization pipeline group is provided with an inner lining pipe made of ultra-high molecular weight polyethylene, which has excellent corrosion resistance and is particularly suitable for complex corrosion environments such as shale oil wells with high H2S, CO2, salt water and acid; and has strong wear resistance, anti-adhesion, no fouling, and greatly prolonged service life. Embodiment 5

[0028] Referring to Figure 1 , Figure 2 and Figure 3 . The shale oil high-sulfur self-flowing well ground desulfurization device, on the basis of the technical solutions described in Embodiment 1, the desulfurizer spraying mechanism 2 includes a spiral nozzle, which has a smooth flow channel and can minimize fluid blockage. Embodiment 6

[0029] Referring to Figure 1 , Figure 2 and Figure 3The embodiment 7 is characterized in that a stop valve 4 is arranged on the transition pipeline 5 to effectively cut off, regulate and throttle. Embodiment 7

[0030] Referring to Figure 1 , Figure 2 and Figure 3 The embodiment 7 is characterized in that the oil outlet 7 of the mixing tank 3 is more than one meter away from the ground to ensure that the mixed liquid of the shale oil and the desulfurizing agent continuously flows into the S-shaped ground desulfurizing pipeline group under the action of gravity.

[0031] To make the skilled in the art better understand the utility model, the basic working principle is briefly introduced as follows:

[0032] The high-sulfur shale oil of the self-flowing well enters the mixing tank 3 through the oil inlet 1, and the desulfurizing agent is uniformly sprayed into the mixing tank 3 from the desulfurizing agent spraying mechanism 2 in proportion, so that the shale oil and the desulfurizing agent are preliminarily mixed in the mixing tank 3. The mixed liquid flows into the transition pipeline 5 (the stop valve 4 is opened) through the oil outlet 7, and then flows into the S-shaped ground desulfurizing pipeline group. Through tests, the S-shaped arrangement is most conducive to the mixing of the shale oil and the desulfurizing agent, and reasonable pipeline spacing and length can ensure that the sulfur element completes the replacement reaction in the pipeline group. In the case that the concentration of hydrogen sulfide in the shale oil is 1000-50000 ppm, the desulfurization reaches the standard. After the mixed liquid passes through the S-shaped ground desulfurizing pipeline group, it enters the buffer tank 6, which is helpful for further mixing and homogenization, and is conducive to centralized external transport, preventing the direct external pumping from the pipeline group from causing flow interruption and disrupting the normal mixing time.

Claims

1. A shale oil high sulfur self flowing well surface desulfurization device, characterized in that, It comprises a mixing tank, a support frame, a desulfurizing agent spraying mechanism, a transition pipeline, an S-shaped ground desulfurizing pipeline group and a buffer pool.

2. The shale oil high-sulfur flowing well ground desulfurization device according to claim 1, characterized in that, The mixing tank is installed above the support frame, the top of the side wall of the mixing tank is provided with an oil inlet, the bottom of the side wall of the mixing tank is provided with an oil outlet, and the desulfurizing agent spraying mechanism is hung directly above the mixing tank.

3. The shale oil high-sulfur flowing well ground desulfurization device according to claim 2, characterized in that, The upper end of the transition pipeline is connected with the oil outlet of the mixing tank, and the lower end is connected with the oil inlet of the S-shaped ground desulfurizing pipeline group.

4. The shale oil high-sulfur flowing well ground desulfurization device according to claim 2, characterized in that, The S-shaped ground desulfurizing pipeline group comprises a plurality of parallel desulfurizing pipelines laid on the ground and elbow mechanisms connecting the corresponding position ports of adjacent desulfurizing pipelines.

5. The shale oil high-sulfur flowing well ground desulfurization device according to claim 4, characterized in that, The last elbow mechanism and the next elbow mechanism are respectively located at the front end and the rear end of the desulfurizing pipeline according to the oil flow direction.

6. The shale oil high-sulfur flowing well ground desulfurization device according to claim 4, characterized in that, The tail end of the pipeline group leads to the buffer pool.

7. The shale oil high-sulfur flowing well ground desulfurization device according to claim 1, characterized in that, The left joint and the right joint are the same in structure and each comprises a short section and an outer convex end.

8. The shale oil high-sulfur flowing well ground desulfurization device according to claim 1, characterized in that, The left elbow and the right elbow are the same in structure and each comprises an elbow body and two outer convex ends.

9. The shale oil high sulfur self flowing well surface desulfurization device according to claim 1, characterized in that, The short section of the left joint is fixed with the end of the left pipeline, the outer convex end of the left joint is connected with one outer convex end of the left elbow and is fixed around by the left pipe clamp, the other outer convex end of the left elbow is connected with one outer convex end of the right elbow and is fixed around by the middle pipe clamp, and the short section of the right joint is fixed with the end of the right pipeline.

10. The shale oil high-sulfur flowing well ground desulfurization device according to claim 1, characterized in that, The left elbow and the right elbow are each a ninety-degree elbow. The left pipe clamp, the middle pipe clamp and the right pipe clamp are the same in structure and each comprises an upper arc-shaped clamp piece and a lower arc-shaped clamp piece which are buckled together, and each end of the upper arc-shaped clamp piece and the lower arc-shaped clamp piece is provided with a corresponding through hole. The two ends of the upper arc-shaped clamp piece and the lower arc-shaped clamp piece are each provided with two through holes and are equipped with corresponding bolts and nuts. The left pipe clamp, the middle pipe clamp and the right pipe clamp further comprise a sealing ring which is sleeved around the two connected outer convex ends, and the upper arc-shaped clamp piece and the lower arc-shaped clamp piece jointly wrap the sealing ring. The S-shaped ground desulfurizing pipeline group is provided with an inner lining pipe made of ultra-high molecular weight polyethylene. The desulfurizing agent spraying mechanism comprises a spiral nozzle. The transition pipeline is provided with a stop valve. The oil outlet of the mixing tank is more than one meter away from the ground.

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