Sand remover pry for shale gas

Abstract

The utility model discloses a sand remover pry for shale gas. The sand remover pry comprises a pry seat, a sand remover, an inlet pipe section and an outlet pipe section, the prying seat is mounted on the ground; the desander is a horizontal desander and comprises a barrel, and the bottom of the barrel is mounted on a prying seat through a saddle; a filter element is assembled in the cylinder body, the filter element and the cylinder body are coaxially arranged, and the axes of the filter element and the cylinder body are horizontal; the inlet end of the cylinder body is provided with a tightening end socket, the tightening end socket is connected with the inlet pipe section, and a flow channel connected with the interior of the inlet pipe section and the interior of the filter element is arranged in the tightening end socket; and the inlet pipe section is communicated with an external inlet pipeline through an inlet flange. The prying seat with the horizontal sand remover has the beneficial effects that the prying seat with the horizontal sand remover is compact and flexible in structure, equipment is convenient to install and transport, and the stability and the mobility of the equipment are improved; the filter element is matched in the barrel of the desander, so that the filtering area is increased, and the desanding effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield exploitation technology, concretely relates to a shale gas sand remover crowbar. BACKGROUND

[0002] The shale gas sand remover crowbar used in the oilfield at present is a vertical sand remover, which only removes sand by centrifugal sedimentation principle, and the high gas flow rate will take out small particle size sand, resulting in unsatisfactory sand removal effect.

[0003] The shale gas in a certain area contains hydrogen sulfide, and the average content is 0.45%. During the fracturing process of the shale gas well in the area, a large amount of proppant, generally more than 2000 square meters, is put into the well. During the production process, the gas well starts to sand out as the pressure and yield decrease, which causes the pipeline and equipment of the ground system to be blocked, eroded and perforated, etc., causing hydrogen sulfide leakage, etc., and there is a serious safety hazard. Therefore, sand removal treatment is needed.

[0004] At present, the shale gas sand remover crowbar used in the oilfield is a vertical sand remover, which is inconvenient to transport and only removes sand by gravity sedimentation principle, resulting in unsatisfactory sand removal effect.

[0005] Therefore, it is necessary to improve the prior art. SUMMARY

[0006] The utility model discloses to aim at the shortage of prior art, provide a shale gas sand remover crowbar for shale gas for sand removal effectual shale gas sand remover crowbar.

[0007] The utility model discloses the technical scheme for a shale gas sand remover crowbar, including crowbar seat, sand remover, import pipe section and export pipe section.

[0008] The crowbar seat is installed on the ground, and the sand remover is a horizontal sand remover, which comprises a cylinder body, the bottom of the cylinder body is installed on the crowbar seat through a saddle, and a filter element is assembled in the cylinder body.

[0009] The inlet end of the cylinder body is provided with a constricting head, the constricting head is connected with the import pipe section, a flow channel connected with the inside of the import pipe section and the inside of the filter element is arranged in the constricting head, the import pipe section is communicated with the import pipeline outside through the import flange, and the outlet end of the cylinder body is connected with the export pipe section.

[0010] According to the above scheme, the export pipe section is communicated with the import pipe section through the bypass pipeline.

[0011] According to the above scheme, the upper end of the tightening head is sealed with a first differential pressure gauge tube, and the first differential pressure gauge tube is communicated with the interior of the tightening head; the upper end of the cylinder close to the tightening head is sealed with a second differential pressure gauge tube, and the second differential pressure gauge tube is communicated with the interior of the cylinder.

[0012] According to the above solution, a pressure gauge tube is sealedly connected to the side of the upper end of the cylinder away from the tightening port seal.

[0013] According to the above solution, the outlet end of the cylinder is sealed and connected to the vent.

[0014] According to the above scheme, a first flat gate valve is arranged on the inlet pipe section, and the outlet end of the first flat gate valve is connected to the inlet of the tightening head through a flange; a second flat gate valve is arranged on the outlet pipe section; and a third flat gate valve is arranged on the bypass pipeline.

[0015] According to the above solution, the skid is a steel structure.

[0016] According to the above solution, a transverse reinforcing rib plate is provided on the skid seat.

[0017] According to the above solution, a longitudinal reinforcing rib plate is provided on the skid seat.

[0018] According to the above solution, the skid seat is rectangular as a whole.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model is designed with a skid seat for a horizontal desander, which has a compact and flexible structure, facilitates the installation and transportation of the equipment, and increases the stability and mobility of the equipment. The desander cylinder of the utility model is equipped with a filter element to increase the filtration area. When the natural gas containing sand particles undergoes the dual effects of gravity sedimentation and filtration by the filter cartridge, the desander effect is improved without affecting the passage of the medium.

[0021] 2. The utility model is provided with a bypass pipeline, which can timely repair the faulty desander and increase the stability and safety of the skid-mounted equipment.

[0022] 3. In the present invention, shale gas inlet and outlet are respectively provided at both ends of the desander. This design facilitates the forward flow of the fluid. Compared with the desander in the prior art in which the inlet and outlet are provided at the same end, it avoids equipment erosion caused by the reverse flow of the medium and is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a facade of a specific embodiment of the utility model Figure 1 .

[0024] Figure 2 This is the facade of this embodiment Figure 2 .

[0025] Figure 3 It is a top view of this embodiment.

[0026] Figure 4 Schematic diagram of the structure of the desander in this embodiment.

[0027] Among them: 0, skid seat; 1, inlet flange; 2, first flat gate valve; 3, second flat gate valve; 4, tightening head; 5, cylinder; 6, filter element; 7, saddle; 8, first differential pressure gauge tube; 9, second differential pressure gauge tube; 10, pressure gauge tube; 11, quick-opening blind plate; 12, vent; 13, self-locking device; 14, bypass line; 15, third flat gate valve; 16, reinforcing rib plate; 17, outlet flange; 18, inlet pipe section; 19, outlet pipe section. DETAILED DESCRIPTION

[0028] In order to better understand the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 4 A desander skid for shale gas shown includes a skid base 1, a desander, an inlet pipe section 18, and an outlet pipe section 19;

[0030] The skid 1 is mounted on the ground. The desander is a horizontal desander, comprising a cylinder 5, the bottom of which is mounted on the skid 1 via a saddle 7. A filter element 6 is mounted in the cylinder 5, and the filter element 6 is coaxial with the cylinder 5, with their axes being horizontal.

[0031] The inlet end of the cylinder 5 is provided with a tightening head 4, which is connected to the inlet pipe section 18. The tightening head 4 is provided with a flow channel connecting the inside of the inlet pipe section 18 and the inside of the filter element 6; the inlet pipe section 18 is connected to the external inlet pipeline through the inlet flange 1; the outlet end of the cylinder 5 is connected to the outlet pipe section 19, and the outlet pipe section 19 is connected to the external outlet pipeline through the outlet flange 17; the other end port of the cylinder 5 is provided with a quick-opening blind plate 11.

[0032] Preferably, the outlet pipe section 19 is connected to the inlet pipe section 18 through the bypass line 14 .

[0033] Preferably, a first differential pressure gauge tube 8 is hermetically connected to the upper end of the constriction seal 4, communicating with the interior of the constriction seal 4. A second differential pressure gauge tube 9 is hermetically connected to the upper end of the barrel 5, proximate the constriction seal 4, communicating with the interior of the barrel 5. A differential pressure transmitter is installed between the first differential pressure gauge tube 8 and the second differential pressure gauge tube 9 to measure the difference between the two pressures to determine whether sand has been removed.

[0034] The utility model discloses, the pressure gauge pipe 10 is sealedly connected with pressure gauge on the one side of the cylinder body 5 far from the tight mouth end cover 4, is used to install pressure gauge, to detect the pressure inside the cylinder body 5 (determine whether the running pressure of equipment is in the design pressure range, detect whether the equipment is normal operation), and the quick -open blanking 11 is sealedly connected with the one end of the filter core 6 on the one end (that is, the export end) of the cylinder body 5 far from the tight mouth end cover 4, and the quick -open blanking 11 is provided with self -locking device 13, and the quick -open blanking 11 is connected with the one end of filter core 6, and the upper portion of the export end (the side close to the quick -open blanking 11) of the cylinder body 5 is sealedly connected with the vent 12, and the vent 12 adopts flange sealing.

[0035] Preferably, the first flat gate valve 2 is arranged on the inlet pipe section 18, and the outlet end of the first flat gate valve 2 is connected with the inlet of the tight mouth end cover 4 through a flange; the second flat gate valve 3 is arranged on the outlet pipe section 19; and the third flat gate valve 15 is arranged on the bypass pipeline 14.

[0036] Preferably, the pry seat 1 is a steel structure, and the pry seat 1 is provided with transverse and longitudinal reinforcing rib plates 16; and the pry seat 1 is in the shape of a rectangle as a whole.

[0037] The working process of the utility model is as follows: when in use, the inlet flange 1 is connected with the external inlet pipeline, and the outlet flange 17 is connected with the external outlet pipeline. When in operation, natural gas enters the tight mouth end cover 4 through the inlet pipeline and the inlet pipe section 18, and then enters the filter core 6 in the cylinder body 5 (under the action of fluid, the filter core 6 has axial positioning to increase the stability of the equipment), and the sand particles in the natural gas are filtered by using gravity settling and filter cylinder filtering, the filtered natural gas flows out through the outlet pipe section 19 and the external outlet pipeline, and the sand particles are left in the cylinder body 5, the pressure difference between the inside and outside of the cylinder body 5 is monitored by using a differential pressure transmitter, the opportunity of sand cleaning is determined, the quick -open blanking 11 is opened, and the sand cleaner is cleaned.

[0038] In the utility model, the horizontal sand cleaner can adopt anti-hydrogen sulfide material, meet the application of shale gas well containing sulfur, guarantee the safe and stable production of gas field, and prolong the service life of ground pipeline equipment.

[0039] In the utility model, the quick -open blanking 11 is provided with a safety self -locking device 13 (for the existing structure, not repeated here), so that the quick -open blanking 11 cannot be opened under pressure, and the filter core 6 is conveniently cleaned, and the structure is simple and practical.

[0040] The contents not described in detail in the specification belong to the prior art known to the person skilled in the art.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A desander skid for shale gas, characterized in that: Includes skid, desander, inlet pipe section and outlet pipe section; The skid is mounted on the ground; the desander is a horizontal desander, comprising a cylinder, the bottom of which is mounted on the skid via a saddle; a filter element is mounted in the cylinder, the filter element and the cylinder are coaxially arranged, and the axes of the two are horizontal; A tightening head is provided at the inlet end of the cylinder, which is connected to the inlet pipe section. A flow channel connecting the inside of the inlet pipe section and the inside of the filter element is provided in the tightening head; the inlet pipe section is connected to the external inlet pipeline; the outlet end of the cylinder is connected to the outlet pipe section, which is connected to the external outlet pipeline.

2. The desander skid for shale gas according to claim 1, characterized in that: The outlet pipe section is communicated with the inlet pipe section through a bypass pipeline.

3. The desander skid for shale gas according to claim 1 or 2, characterized in that: The upper end of the tightening mouth head is sealed with a first differential pressure gauge tube, which is communicated with the interior of the tightening mouth head; the upper end of the cylinder close to the tightening mouth head is sealed with a second differential pressure gauge tube, which is communicated with the interior of the cylinder.

4. The desander skid for shale gas according to claim 3, characterized in that: A pressure gauge tube is sealedly connected to one side of the upper end of the cylinder away from the tightening port seal.

5. The desander skid for shale gas according to claim 4, characterized in that: The outlet end of the cylinder is sealed and connected to the vent.

6. The desander skid for shale gas according to claim 5, characterized in that: The inlet pipe section is provided with a first flat gate valve, the outlet end of which is connected to the inlet of the tightening head through a flange; the outlet pipe section is provided with a second flat gate valve; and the bypass pipeline is provided with a third flat gate valve.

7. The desander skid for shale gas according to claim 6, characterized in that: The skid seat is a steel structure.

8. The desander skid for shale gas according to claim 6, characterized in that: A transverse reinforcing rib plate is provided on the skid seat.

9. The desander skid for shale gas according to claim 6, characterized in that: A longitudinal reinforcing rib plate is provided on the skid seat.

10. The desander skid for shale gas according to claim 6, characterized in that: The skid seat is rectangular as a whole.

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