Automatic double-channel wellhead device with desanding and filtering functions

Abstract

The utility model belongs to the technical field of petroleum and natural gas extraction equipment, and particularly relates to an automatic double-channel wellhead device with desanding and filtering functions, which comprises a tubing head four-way joint, a tubing head side wing gate valve is further mounted on the surface of the tubing head four-way joint, and an upper flange is fixedly connected to the upper surface of the tubing head side wing gate valve. A Christmas tree main drift diameter combination valve is installed on the upper flange through bolts, a double-channel filtering device is installed on the upper surface of the Christmas tree main drift diameter combination valve, Christmas tree gate valves are symmetrically arranged on the upper surface of the double-channel filtering device, and small four-way joints are installed on the upper surfaces of the Christmas tree gate valves. The device adopts a double-channel redundancy design to guarantee continuous production and avoid shutdown loss, the working efficiency is greatly improved through two-stage sand removal, the manual intervention requirement is reduced through automatic control, the device is suitable for a remote well site, the modular structure is convenient to maintain, and the filter pipe is convenient to take out and clean.

Description

TECHNICAL FIELD

[0001] The utility model belongs to petroleum and natural gas exploitation equipment technical field, concretely relates to an automatic double -channel well head device with sand filtering function. BACKGROUND

[0002] In the process of oil production and gas production, a large amount of sand or flocculent is often produced in some areas;Such material has great harm: sand, especially in high pressure, can cause erosion to the choke valve at the end of the production, resulting in the breakage of valve rod and valve rod head;Flocculent can block the hole structure of the pipeline and the choke valve, so it is necessary to filter the wellhead production under high pressure.

[0003] Therefore, an automatic double -channel well head device with sand filtering function is designed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] To solve the problems in the background art, the utility model provides an automatic double -channel well head device with sand filtering function, which adopts double -channel redundant design to ensure continuous production and avoid downtime loss.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an automatic double -channel well head device with sand filtering function, comprising a tubing head cross, the surface of the tubing head cross is further provided with a tubing head wing gate valve, the upper surface of the tubing head wing gate valve is fixedly connected with an upper flange, the upper flange is provided with an oil production tree main pass combination valve through bolts, the upper surface of the oil production tree main pass combination valve is provided with a double -channel filter device, the upper surface of the double -channel filter device is symmetrically provided with an oil production tree gate valve, the upper surface of the oil production tree gate valve is provided with a small cross, and the side surface of the small cross is provided with an oil production tree wing gate valve.

[0006] As a preferred automatic double -channel well head device with sand filtering function of the utility model, the oil production tree main pass combination valve is provided with an automatically controlled driver, and the surface of the oil production tree main pass combination valve is further provided with two hand wheel valves, which are different in direction.

[0007] As a preferred automatic double -channel well head device with sand filtering function of the utility model, the double -channel filter device is provided with a filter device with a filter gap of 0.5mm*200mm.

[0008] As a preferred automatic double -channel well head device with sand filtering function of the utility model, the filter device in the double -channel filter device comprises two parallel and identical filter pipe devices.

[0009] The top end of the filter pipe is designed in a circular arc, and grooves are arranged on the two side walls of the filter pipe.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] The device adopts a double-channel redundant design to ensure continuous production and avoid downtime losses, two-stage sand removal greatly improves work efficiency, automatic control reduces the need for manual intervention, is suitable for remote well sites, the modular structure is convenient to maintain, and the filter pipe is convenient to take out and clean. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.In the drawings:

[0013] Fig. 1 It is the whole structure schematic view of the utility model;

[0014] Fig. 2 It is the structure schematic view of the double-channel filter device in the utility model;

[0015] In the drawings:

[0016] 1, tubing head cross; 2, tubing head wing gate valve; 3, upper flange; 4, Christmas tree main drift diameter combination valve; 5, double-channel filter device; 6, Christmas tree gate valve; 7, small cross; 8, Christmas tree wing gate valve. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of protection of the utility model.Embodiment 1

[0018] As Figs. 1-2 shown:

[0019] An automated dual-channel wellhead device with sand removal and filtration function includes a tubing head four-way valve 1. A tubing head side gate valve 2 is also installed on the surface of the tubing head four-way valve 1. An upper flange 3 is fixedly connected to the upper surface of the tubing head side gate valve 2. A tree trunk main diameter combination valve 4 is installed on the upper flange 3 by bolts. A dual-channel filter device 5 is installed on the upper surface of the tree trunk main diameter combination valve 4. Tree trunk gate valves 6 are symmetrically arranged on the upper surface of the dual-channel filter device 5. A small four-way valve 7 is installed on the upper surface of each tree trunk gate valve 6. A tree trunk side gate valve 8 is arranged on one side surface of each small four-way valve 7.

[0020] In this implementation plan: when the oil mixture containing sand and flocculent matter is raised from the bottom of the well to the internal hanger of the tubing head four-way 1 under pressure, the liquid will be produced by passing through the tubing head side gate valve 2, the tree gate valve 6, the small four-way 7 and the tree side gate valve 8 in sequence. During this process, the liquid can be filtered by the dual-channel filter device 5.

[0021] Furthermore:

[0022] like Figs. 1-2 As shown:

[0023] In an optional embodiment, the main bore valve 4 of the tree has an automatically controllable actuator, and the surface of the main bore valve 4 is also provided with two handwheel valves, each with a different direction.

[0024] In this embodiment: the main borehole combination valve 4 of the wellhead is the main core valve of the device. As the core valve of the wellhead, it can control the main channel of fluid in the well (fully open / fully closed). It can achieve rapid shut-off through an automatically controlled actuator (electric, hydraulic or pneumatic) to prevent blowout or pipeline rupture. It supports remote operation, pressure monitoring and automatic adjustment. It can be remotely controlled to reduce manual intervention and improve safety and production efficiency through automated control.

[0025] Furthermore:

[0026] like Figs. 1-2 As shown:

[0027] In an optional embodiment, the dual-channel filter device 5 is internally provided with a filter device with a 0.5mm*200mm filter gap.

[0028] In this embodiment, the dual-channel filter device 5 is equipped with a filter device with a 0.5mm*200mm filter gap inside. This design can enhance the filtration effect of the device.

[0029] Furthermore:

[0030] like Figs. 1-2 As shown:

[0031] In an alternative embodiment, the filtering device inside the dual-channel filtering device 5 comprises two parallel and identical filtering tube devices.

[0032] In this embodiment, the dual-channel filtering device 5 comprises two parallel and identical filtering tube devices. During use, one side of the filtering tube is used, and the other side is not used. The purpose of this is that when the amount of floc and sand in one side of the filtering device is too large, causing blockage, the pressure gauge installed on the main flow path combination valve 4 of the Christmas tree will show an increased value, because pressure is built up at this position. At this time, the control device will send a signal to the left wing of the main flow path combination valve 4 of the Christmas tree to close the valve, and send a signal to the right wing of the main flow path combination valve 4 of the Christmas tree to open the valve. When the left wing valve of the main flow path combination valve 4 of the Christmas tree is closed and the side wing gate valve 8 of the Christmas tree is relieved of pressure, the dual-channel filtering device 5 can be disassembled, the filtering tube can be removed, and cleaning work can be performed.

[0033] Further, in this embodiment:

[0034] As shown in Figs. 1-2 :

[0035] In an alternative embodiment, the top end of the filtering tube is designed in a circular arc, and grooves are provided on the side walls of the filtering tube.

[0036] In this embodiment, the top end of the filtering tube is designed in a circular arc. Under the impact of pressure, the sand and floc filtered out will be affected by inertia and slide along the side walls into the grooves on both sides of the filtering tube. This design prevents sand and floc from re-entering the oil mixture.

[0037] Working principle: when the oil liquid mixture containing sand and flocculation is lifted to the hanger inside the tubing head cross 1 by the well bottom under the action of pressure, the liquid will be output in turn through the tubing head wing gate valve 2, the Christmas tree gate valve 6, the small cross 7 and the Christmas tree wing gate valve 8, in this process, the liquid can be filtered through the double-channel filtering device 5, the Christmas tree main bore combined valve 4 is the main core valve of the device, as the core valve of the Christmas tree, it can control the main channel of the well fluid (fully open / fully closed), realize rapid shutdown through the automatic control driver (electric, hydraulic or pneumatic), prevent blowout or pipeline rupture, support remote operation, pressure monitoring and automatic adjustment, can remotely control to reduce manual intervention, improve safety and production efficiency through automatic control, because the double-channel filtering device 5 is internally provided with a filtering device with a 0.5mm*200mm filtering gap, this design can enhance the filtering effect of the device, the double-channel filtering device 5 contains two parallel and identical filtering pipe devices, in the use process, one side of the filtering pipe is used, and the other side is not used temporarily, the purpose of this is: when the flocculation and sand in one side of the filtering device are too much to cause blockage, the pressure gauge value of the Christmas tree main bore combined valve 4 will increase because the position forms pressure accumulation, at this time, the control device will transmit the information of closing the valve to the left wing of the Christmas tree main bore combined valve 4, and transmit the signal of opening the valve to the right wing of the Christmas tree main bore combined valve 4 after receiving the signal of sudden increase of pressure, when the left wing valve of the Christmas tree main bore combined valve 4 is closed and the Christmas tree wing gate valve 8 is relieved, the double-channel filtering device 5 can be disassembled and the filtering pipe can be taken out for cleaning operation, the top end of the filtering pipe is designed as a circular arc structure, under the impact of pressure, the sand and flocculation filtered out will be affected by inertia and slide into the grooves on both sides of the side wall, this design prevents the sand and flocculation from entering the oil liquid mixture again.

[0038] Finally, it should be pointed out that the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic dual channel wellhead device with sand removal and filtration function, comprising a tubing head cross (1), characterized in that: The surface of the tubing head four-way (1) is also provided with a tubing head wing gate valve (2), the upper surface of the tubing head wing gate valve (2) is fixedly connected with an upper flange (3), the upper flange (3) is provided with a Christmas tree main diameter combination valve (4) through bolts, the upper surface of the Christmas tree main diameter combination valve (4) is provided with a double-channel filtering device (5), the upper surface of the double-channel filtering device (5) is symmetrically provided with a Christmas tree gate valve (6), the upper surface of the Christmas tree gate valve (6) is provided with a small four-way (7), and the side surface of the small four-way (7) is provided with a Christmas tree wing gate valve (8).

2. The automatic dual access wellhead device with sand removal and filtration function according to claim 1, characterized in that: The Christmas tree main diameter combination valve (4) is provided with an automatically controlled driver, and the surface of the Christmas tree main diameter combination valve (4) is also provided with two hand wheel valves, and the directions of the two hand wheel valves are different.

3. The automatic dual access wellhead device with sand removal and filtration function according to claim 2, characterized in that: The double-channel filtering device (5) is provided with a filtering device with a filtering gap of 0.5mm*200mm.

4. The automatic dual access wellhead device with sand removal and filtration function according to claim 3, characterized in that: The filtering device inside the double-channel filtering device (5) comprises two parallel and identical filtering pipe devices.

5. The automatic dual access wellhead device with sand removal and filtration function according to claim 4, characterized in that: The top end of the filtering pipe is designed in a circular arc, and the two side walls of the filtering pipe are provided with grooves.

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