CN209040817U - The dual-purpose mining wellhead assembly of coal bed gas - Google Patents

Abstract

The utility model discloses the dual-purpose mining wellhead assemblies of coal bed gas, are related to coal bed gas wellhead device field, the dual-purpose mining wellhead assembly of coal bed gas, including the first compound tube and the second compound tube, further include splicing tubes and socket ring；Socket ring is flexibly connected with the bottom of splicing tubes, splicing tubes upper end two sides are fixedly installed with first flange, first flange is from left to right successively flexibly connected with the bottom of the first compound tube and the second compound tube respectively, flowline is fixedly connected in the middle part of first compound tube, first compound tube bottom outside is fixedly connected with extension tube attached, manual flat valve is fixedly installed in extension tube attached, the first compound tube upper inside is fixedly installed with oil pick-up tube meter；The first compound tube for being suitable for smaller flow and the second compound tube are flexibly connected with splicing tubes by the utility model respectively by way of splicing, are formed the wellhead assembly for being suitable for greater flow, are closed the adjustable size using flow of corresponding shut-off valve.

Description

The dual-purpose mining wellhead assembly of coal bed gas

Technical field

The utility model relates to coal bed gas wellhead device fields, fill more specifically to the dual-purpose mining well head of coal bed gas It sets.

Background technique

Coal bed gas well is with oil well comparatively, having the characteristics that pressure requirements are low, down-hole string is few.The ground of coal-bed gas exploitation Face equipment is mainly screw pump or pumping unit.It is determined by the structure of screw pump, must just use 250 model christmas tree with screw pump Mouthful, the two is fixedly connected by big four, flange realization, which is integrally formed by casting technique, heavy, cost It is high；Pumping unit mainly uses the wellhead assembly of 150 type production trees or lower pressure.For the ease of the installation of mining wellhead assembly, The utility model will be installed by the way of splicing, can be by closing phase when oil recovery flow lesser screw pump oil production The mode for the shut-off valve answered uses, and can also be mounted directly the first compound tube, can be with when the flow of oil recovery is larger The utility model is directly used, compared to traditional integral type wellhead assembly, the utility model is easily installed and transports.

Utility model content

The purpose of this utility model is to provide for a kind of wellhead assembly suitable for different flow size, and the coal proposed The layer dual-purpose mining wellhead assembly of gas.

To achieve the goals above, the utility model adopts the technical scheme that

The dual-purpose mining wellhead assembly of coal bed gas, including the first compound tube and the second compound tube, further include splicing tubes and socket Ring；The socket ring is flexibly connected with the bottom of splicing tubes, and the splicing tubes upper end two sides are fixedly installed with the first method Orchid, the first flange is from left to right successively flexibly connected with the bottom of the first compound tube and the second compound tube respectively, described The first compound tube in the middle part of be fixedly connected with flowline, the first compound tube bottom outside is fixedly connected with extension tube attached, Manual flat valve is fixedly installed in the extension tube attached, the first compound tube upper inside is fixedly installed with oil pumping Pipe, the first compound tube inner lower are fixedly installed with lower oil pick-up tube, are fixedly installed with and cut in the middle part of the splicing tubes The upper surface of only valve, the splicing tubes is from left to right successively fixedly installed with pressure gauge and flowmeter.

Preferably, the inside of the splicing tubes is fixedly installed with inner tube, the inner ring phase of the inner tube and socket ring Match, strengthening layer is provided on the outer wall of the splicing tubes, is fixedly installed between the upper end and splicing tubes of the socket ring The outer ring of second flange, the second flange is fixedly installed with upper press ring, is socketed the setting of ring convenient for connection oil extraction pipeline.

Preferably, installing frame is fixedly installed in the middle part of the described first combination tube outer surface, in first compound tube Oil pumping chamber and oil pumping chamber are provided between upper oil pick-up tube and lower oil pick-up tube, test is fixedly mounted in the outside of the oil pumping chamber Pipe, is fixedly installed with pressure gauge on the flowline, the outer surface of first compound tube be fixedly connected with well-flushing pipe and Well-flushing pipe is located at the lower section of flowline, and the first compound tube and the second compound tube construction are identical, is suitable for the lesser screw pump of flow.

Preferably, fixed block is fixedly installed on the outer surface of the socket ring, on the outer surface of the fixed block It is provided with fixing groove, the fixation and installation of the utility model are convenient in the setting of fixed block.

Compared with prior art, the utility model provides the dual-purpose mining wellhead assembly of coal bed gas, has following beneficial to effect Fruit:

(1) in the utility model, by the first compound tube of setting and the second compound tube, when oil well reserves are sufficient and use stream When measuring biggish pumping unit, the first compound tube can be fixed with splicing tubes with the second compound tube by first flange respectively Link together, then socket ring be fixedly connected with the bottom of splicing tubes, socket ring is directly fixedly connected with oil extraction pipeline, into When row recovers the oil, external pumping unit work makes to form pressure difference between oil pick-up tube and lower oil pick-up tube, crude oil is first from oil recovery Pipeline enters socket ring, then is passed sequentially through in inner tube and lower oil pick-up tube in splicing tubes by socket ring, then is discharged from flowline, The specific pressure of crude oil and flowmeter can be read out from pressure gauge and flowmeter, be fixedly installed with fixed block simultaneously outside socket ring And the outer surface of fixed block is provided with fixing groove, is installation and fixation for the ease of that will be socketed ring, when lesser using flow When screw pump, the shut-off valve in adjustable splicing tubes can also be direct for reducing the flow of crude oil in lower oil pick-up tube First compound tube or the second compound tube are flexibly connected by first flange with socket ring, the first compound tube can be directly as well Mouth device uses, and the utility model is enable to be suitable for the coal bed gas extraction well head of different flow size through the above arrangement；

(2) in the utility model, by setting splicing tubes and socket ring, second can be passed through between splicing tubes and socket ring Flange is fixedly connected, since the caliber of splicing tubes is larger, in order to further strengthen the connection of second flange, so in second flange Upper end be fixedly installed with upper press ring, need to detect oil product at interval of a period of time when exploiting oil field, using in upper oil pumping Testing tube is fixedly mounted in the side of oil pumping chamber between pipe and lower oil pick-up tube, is specifically used to detect oil product, also in the first compound tube Outer surface be arranged well-flushing pipe, positioned at cleaning oil well in silt.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model splicing tubes；

Fig. 3 is the structural schematic diagram of the first compound tube of the utility model.

Figure label explanation:

1, the first compound tube；2, the second compound tube；3, splicing tubes；4, it is socketed ring；5, shut-off valve；6, first flange；7, hand Dynamic flap type；8, extension tube attached；9, flowline；10, pressure gauge；11, flowmeter；12, upper oil pick-up tube；13, oil pumping chamber；14, second Flange；15, upper press ring；16, fixed block；17, inner tube；18, strengthening layer；19, lower oil pick-up tube；20, pressure gauge；21, testing tube； 22, installing frame；23, well-flushing pipe.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model；The technical scheme in the embodiment of the utility model is carried out Clearly and completely describe；Obviously；The described embodiments are only a part of the embodiments of the utility model；Rather than whole Embodiment.Based on the embodiments of the present invention；Those of ordinary skill in the art are without making creative work Every other embodiment obtained；It fall within the protection scope of the utility model.

Embodiment 1: referring to Fig. 1, the dual-purpose mining wellhead assembly of coal bed gas, including the first compound tube 1 and the second compound tube 2, it further include splicing tubes 3 and socket ring 4；Socket ring 4 is flexibly connected with the bottom of splicing tubes 3, and 3 upper end two sides of splicing tubes are fixed First flange 6 is installed, first flange 6 is from left to right successively movable with the bottom of the first compound tube 1 and the second compound tube 2 respectively Connection, the middle part of the first compound tube 1 are fixedly connected with flowline 9, and 1 bottom outside of the first compound tube is fixedly connected with extension tube attached 8, It is fixedly installed with manual flat valve 7 in extension tube attached 8,1 upper inside of the first compound tube is fixedly installed with oil pick-up tube 12, and first group Close 1 inner lower of pipe and be fixedly installed with lower oil pick-up tube 19, the middle part of splicing tubes 3 is fixedly installed with shut-off valve 5, splicing tubes 3 it is upper Surface is from left to right successively fixedly installed with pressure gauge 10 and flowmeter 11.

It is socketed on the outer surface of ring 4 and is fixedly installed with fixed block 16, be provided with fixing groove on the outer surface of fixed block 16.

In the utility model, by the first compound tube 1 of setting and the second compound tube 2, when oil well reserves are sufficient and use stream When measuring biggish pumping unit, can by the first compound tube 1 and the second compound tube 2 by first flange 6 respectively with splicing tubes 3 It is fixed together, then socket ring 4 is fixedly connected with the bottom of splicing tubes 3, socket ring 4, which is directly fixed with oil extraction pipeline, to be connected It connects, when being recovered the oil, external pumping unit work makes to form pressure difference between oil pick-up tube 12 and lower oil pick-up tube 19, former Oil enters socket ring 4 from oil extraction pipeline first, then inner tube 17 and lower oil pick-up tube in splicing tubes 3 are passed sequentially through by socket ring 4 In 19, then from the discharge of flowline 9, the specific pressure of crude oil and flowmeter 11 can be read from pressure gauge 11 and flowmeter 11 Come, is fixedly installed with fixed block 16 outside socket ring 4 and the outer surface of fixed block 16 is provided with fixing groove, be for the ease of that will cover The installation and fixation for connecing ring 4, when using flow lesser screw pump, shut-off valve 5 in adjustable splicing tubes 3 is used The flow of crude oil in lower oil pick-up tube 19 is reduced, can also the first compound tube 1 or the second compound tube 2 directly be passed through into first flange 6 are flexibly connected with socket ring 4, and the first compound tube 1 can be used directly as wellhead assembly, make this practical new through the above arrangement Type can be suitable for the coal bed gas extraction well head of different flow size.

Embodiment 2: please referring to Fig. 2-3, and the 1 different place in basis is that the inside of splicing tubes 3 is solid in conjunction with the embodiments Dingan County is equipped with inner tube 17, and inner tube 17 and the inner ring of socket ring 4 match, and strengthening layer 18 is provided on the outer wall of splicing tubes 3, is socketed It is fixedly installed with second flange 14 between the upper end and splicing tubes 3 of ring 4, the outer ring of second flange 14 is fixedly installed with upper press ring 15。

Installing frame 22 is fixedly installed in the middle part of first compound tube, 1 outer surface, be provided in the first compound tube 1 oil pumping chamber 13 and Chamber 13 pump between upper oil pick-up tube 12 and lower oil pick-up tube 19, testing tube 21, flowline 9 is fixedly mounted in the outside of oil pumping chamber 13 On be fixedly installed with pressure gauge 20, the outer surface of the first compound tube 1 is fixedly connected with well-flushing pipe 23 and well-flushing pipe 23 be located at it is fuel-displaced The lower section of pipe 9.

It, can be by the between splicing tubes 3 and socket ring 4 by setting splicing tubes 3 and socket ring 4 in the utility model Two flanges 14 are fixedly connected, since the caliber of splicing tubes 3 is larger, in order to further strengthen the connection of second flange 14, so The upper end of second flange 14 is fixedly installed with upper press ring 15, needs to detect oil product at interval of a period of time when exploiting oil field, Testing tube 21 is fixedly mounted using the side of the oil pumping chamber 13 between upper oil pick-up tube 12 and lower oil pick-up tube 19, is specifically used to detect Also well-flushing pipe 23 is arranged in the outer surface of the first compound tube 1 in oil product, the silt in cleaning oil well.

It is described above；The only preferable specific embodiment of the utility model；But the protection scope of the utility model is not It is confined to this；Anyone skilled in the art is within the technical scope disclosed by the utility model；It is practical according to this Novel technical solution and its improvement design is subject to equivalent substitution or change；It should all cover in the protection scope of the utility model It is interior.In addition, one word of " comprising " is not excluded for other elements or step, "one" word before the component is not excluded for including " multiple " be somebody's turn to do Element.The multiple multiple elements stated in claim to a product can also by an element by software or hardware come real It is existing.The first, the second equal words are used to indicate names, and are not indicated any particular order.

Claims (4)

1. the dual-purpose mining wellhead assembly of coal bed gas, including the first compound tube (1) and the second compound tube (2), it is characterised in that: also wrap Include splicing tubes (3) and socket ring (4)；The socket ring (4) is flexibly connected with the bottom of splicing tubes (3), the splicing tubes (3) upper end two sides are fixedly installed with first flange (6), the first flange (6) respectively from left to right successively with first group The bottom for closing pipe (1) and the second compound tube (2) is flexibly connected, and is fixedly connected in the middle part of first compound tube (1) fuel-displaced It manages (9), described the first compound tube (1) bottom outside is fixedly connected with extension tube attached (8), fixed peace in the extension tube attached (8) Equipped with manual flat valve (7), described the first compound tube (1) upper inside is fixedly installed with oil pick-up tube (12), and described One compound tube (1) inner lower is fixedly installed with lower oil pick-up tube (19), and the splicing tubes are fixedly installed with cut-off in the middle part of (3) Valve (5), the upper surface of the splicing tubes (3) are from left to right successively fixedly installed with pressure gauge (10) and flowmeter (11).

2. the dual-purpose mining wellhead assembly of coal bed gas according to claim 1, it is characterised in that: the splicing tubes (3) Inside is fixedly installed with inner tube (17), and the inner tube (17) and the inner ring of socket ring (4) match, the splicing tubes (3) Outer wall on be provided with strengthening layer (18), be fixedly installed with the second method between the upper end and splicing tubes (3) of the socket ring (4) Blue (14), the outer ring of the second flange (14) is fixedly installed with upper press ring (15).

3. the dual-purpose mining wellhead assembly of coal bed gas according to claim 1, it is characterised in that: first compound tube (1) it is fixedly installed with installing frame (22), oil pumping chamber (13) is provided in first compound tube (1) and pumps in the middle part of outer surface For chamber (13) between upper oil pick-up tube (12) and lower oil pick-up tube (19), testing tube is fixedly mounted in the outside of the oil pumping chamber (13) (21), it is fixedly installed with pressure gauge (20) on the flowline (9), the outer surface of first compound tube (1) is fixed to be connected It is connected to well-flushing pipe (23) and well-flushing pipe (23) is located at the lower section of flowline (9).

4. the dual-purpose mining wellhead assembly of coal bed gas according to claim 1, it is characterised in that: the socket ring (4) It is fixedly installed on outer surface fixed block (16), is provided with fixing groove on the outer surface of the fixed block (16).