CN214365973U

CN214365973U - Novel prevent blockking up well head production tree

Info

Publication number: CN214365973U
Application number: CN202120366196.1U
Authority: CN
Inventors: 孔德鹏; 吴炜; 梁萍
Original assignee: Jiangsu Yima Machinery Co ltd
Current assignee: Jiangsu Yima Machinery Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-10-08
Anticipated expiration: 2031-02-08

Abstract

The utility model belongs to the technical field of wellhead Christmas trees, and discloses a novel anti-blocking wellhead Christmas tree, which comprises a Christmas tree body, a casing head and a tubing head, wherein the Christmas tree body, the tubing head and the casing head are sequentially connected from top to bottom, the Christmas tree body comprises a main connecting pipe, an auxiliary connecting pipe and a main conveying pipe which are sequentially connected from bottom to top, the top of the main conveying pipe is connected with a tubing cross through a flange, two electric heating barrels are respectively arranged on the outer wall of each connecting pipe, the electric heating barrels are sleeved on the outer wall of the connecting pipe and are fastened through bolts, the heating of the electric heating wires is controlled through a first controller and a second controller, so that the pipe wall of each connecting pipe is heated, the temperature difference between the inside of the conveying pipe and the inside of the well is reduced, the phenomenon that the wax dissolving capacity of crude oil is reduced effectively is reduced, the precipitation of paraffin is greatly reduced, and the blockage of the conveying pipe caused by the adhesion of paraffin to the pipe wall is avoided, the normal work of the Christmas tree is ensured.

Description

Novel prevent blockking up well head production tree

Technical Field

The utility model belongs to the technical field of the well head christmas tree, concretely relates to novel prevent blockking up well head christmas tree.

Background

A christmas tree is a wellhead device used for producing oil, such as a self-blowing well and a mechanical production well. The main equipment for controlling and regulating oil-gas production in the uppermost part of oil-gas well is mainly composed of three parts of casing head, tubing head and Christmas tree body. The christmas tree connects production tubing and production tubing from downhole while acting as an important barrier to isolate the top of the well from the external environment. The Christmas tree is divided into an overwater Christmas tree and an underwater Christmas tree according to an application area; the tree is divided into a vertical Christmas tree, a horizontal Christmas tree and an inserted Christmas tree according to the installation position.

Present import production tree is at the exploitation in-process of crude oil, along with the reduction of temperature and the precipitation of gas, crude oil wax dissolving capacity is low, paraffin in the oil is so that precipitate with the crystal, grow up, the gathering is and the deposit is on the pipe wall, paraffin phenomenon appears promptly, long-time work then can lead to the passageway sectional area of pipe wall littleer and more, block up even, cause the unable normal clear of oil recovery work, and the conveyer pipe inner wall receives pressure more and more, then can lead to the risk that the transport tank damaged, the security performance is low, furthermore, contain more granule impurity in the oil, in the oil transportation process, impurity piles up more and more in the pipeline, lead to each pipeline all to distinguish impurity jam for a long time, thereby lead to the unable normal work of production tree, reduce work efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel prevent blockking up well head christmas tree to easily wax precipitation in solving current import christmas tree pipe wall, impurity in the oil leads to each conveyer pipe through the oil pipe cross, leads to pipeline block up's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a novel anti-blocking wellhead Christmas tree comprises a Christmas tree body, a casing head and a tubing head, wherein the Christmas tree body, the tubing head and the casing head are sequentially connected from top to bottom, the Christmas tree body comprises a main connecting pipe, an auxiliary connecting pipe and a main conveying pipe which are sequentially connected from bottom to top, the main connecting pipe is connected to the top of the tubing head, the top of the main conveying pipe is connected with a tubing cross through a flange, two side walls of the tubing cross are respectively connected with a first auxiliary conveying pipe and a second auxiliary conveying pipe through flanges, the top of the tubing cross is connected with an anti-spraying pipe through a flange, the main conveying pipe, the first auxiliary conveying pipe and the second auxiliary conveying pipe respectively comprise two connecting pipes which are mutually connected through flanges, electric heating cylinders are sleeved on the outer walls of two ends of each connecting pipe, each electric heating cylinder comprises a first semi-annular cylinder and a second semi-annular cylinder, and one side edge of the first semi-ring cylinder and one side edge of the second semi-ring cylinder are rotatably connected through a rotating pin, the other side edge of the first semi-ring cylinder and the other side edge of the second semi-ring cylinder are fastened through bolts, and heating wires which are arranged in an S shape are embedded in the first semi-ring cylinder and the second semi-ring cylinder.

Preferably, the both sides of production tree body are provided with first controller and second controller respectively, every the winding displacement pipe is all installed to an edge of electrical heating section of thick bamboo, every the wiring groove has all been seted up to the inside of first semi-ring section of thick bamboo and the semi-ring section of thick bamboo of second, and the wiring groove forms S type wiring orbit, the heating wire is along S type wiring orbit wiring, and in its both ends extended to the winding displacement pipe respectively, the winding displacement pipe of every electrical heating section of thick bamboo all is connected to on the first controller on main conveyer pipe and the first pair conveyer pipe, the winding displacement pipe of every electrical heating section of thick bamboo all extends to on the second controller on the conveyer pipe of second width of thick bamboo.

Preferably, be connected with four takeover respectively on four lateral walls about the upper and lower of oil pipe cross, and wherein install three filter respectively on the three takeover, it is three the filter is located the junction of takeover an, takeover b and lubricator and oil pipe cross respectively, every the filter all includes solid fixed ring and filter screen, the filter screen is the cylindric of bottom seal, and solid fixed ring is fixed in the top of filter screen.

Preferably, each filter still includes the annular plate, and the annular plate is fixed in on the terminal surface of solid fixed ring to it is concentric, every the groove has been seted up to equal array on the annular plate, and the annular plate accessible bolted connection is between two flanges.

Preferably, the side wall of the oil pipe head is connected with branch pipes, and valves are arranged on the branch pipes, the blowout prevention pipes and each connecting pipe.

Preferably, the outer wall of the auxiliary connecting pipe is sleeved with a supporting plate, and the first controller and the second controller are symmetrically fixed to the top of the supporting plate.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses an all install two electric heating cylinder on the outer wall of every connecting pipe, make electric heating cylinder cover locate on the outer wall of connecting pipe, and through the bolt-up, through the heating of first controller and second controller control heating wire, thereby play the heating effect to the pipe wall of every connecting pipe, reduce in the pipeline and the difference in temperature in the well, effectively slow down the phenomenon that crude oil wax dissolving capacity reduces, precipitation of the paraffin that significantly reduces, avoid the pipe wall to adhere to paraffin and lead to pipeline to block up, it can normally work to have guaranteed the production tree.

(2) The utility model discloses a three kneck at oil pipe cross sets up the filter, and three filter is respectively through flange mounting in the junction of takeover a, takeover b and lubricator and oil pipe cross for crude oil flows into takeover a, takeover b and lubricator from the main conveyer pipe through the oil pipe cross when in, and particle impurity in the oil is effectively blocked by the filter screen of three filter, can avoid first conveyer pipe, second conveyer pipe and lubricator to be blockked up, further guarantees that the production tree can normally work.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the electric heating cartridge of the present invention;

fig. 3 is a cross-sectional view of a first semi-annular cylinder of the present invention;

FIG. 4 is a schematic structural view of the oil pipe cross of the present invention;

in the figure: the oil production tree comprises a Christmas tree body-1, a casing head-2, an oil pipe head-3, a main connecting pipe-4, an auxiliary connecting pipe-5, a main conveying pipe-6, a connecting pipe-7, a first auxiliary conveying pipe-8, a second conveying pipe-9, an oil pipe four-way joint-10, a blowout prevention pipe-11, a supporting plate-12, a first controller-13, a second controller-14, an electric heating cylinder-15, a wire arranging pipe-16, a valve-17, a branch pipe-18, a first semi-ring cylinder-19, a second semi-ring cylinder-20, a wiring groove-21, an electric heating wire-22, a filter-23, a ring plate-24, a fixing ring-25 and a filter screen-26.

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.

Referring to fig. 1-4, the present invention provides the following technical solutions: a novel anti-blocking wellhead Christmas tree comprises a Christmas tree body 1, a casing head 2 and a casing head 3, wherein the Christmas tree body 1, the casing head 3 and the casing head 2 are sequentially connected from top to bottom, the Christmas tree body 1 comprises a main connecting pipe 4, an auxiliary connecting pipe 5 and a main conveying pipe 6 which are sequentially connected from bottom to top, the main connecting pipe 4 is connected to the top of the casing head 3, the top of the main conveying pipe 6 is connected with a tubing cross 10 through a flange, two side walls of the tubing cross 10 are respectively connected with a first auxiliary conveying pipe 8 and a second auxiliary conveying pipe 9 through flanges, the top of the tubing cross 10 is connected with an anti-spraying pipe 11 through a flange, the main conveying pipe 6, the first auxiliary conveying pipe 8 and the second auxiliary conveying pipe 9 respectively comprise two connecting pipes 7 which are connected with each other through flanges, electric heating cylinders 15 are sleeved on the outer walls of two ends of each connecting pipe 7, each electric heating cylinder 15 comprises a first semi-ring cylinder 19 and a second semi-ring cylinder 20, and one side edge of the first semi-ring cylinder 19 and the second semi-ring cylinder 20 is rotationally connected through a rotating pin, the other side edge is fastened through a bolt, heating wires 22 which are arranged in an S shape are embedded in the first semi-ring cylinder 19 and the second semi-ring cylinder 20, the heating wires 22 can heat the connecting pipe 7 after being electrified, the temperature difference between the inside of the connecting pipe 7 and the inside of the well is reduced, the phenomenon that the wax dissolving capacity of crude oil is reduced is effectively reduced, and the precipitation of paraffin is greatly reduced.

Further, a first controller 13 and a second controller 14 are respectively arranged on two sides of the Christmas tree body 1, a wire arranging pipe 16 is respectively arranged at one side edge of each electric heating cylinder 15, a circuit board for controlling each electric heating cylinder 15 and the electric heating wires 22 is arranged in the wire arranging pipe 16, a wiring groove 21 is respectively arranged inside each first semi-ring cylinder 19 and each second semi-ring cylinder 20, the wiring groove 21 forms an S-shaped wiring track, the wiring groove 21 is arranged inside the semi-annular cylinder and can protect the heating wire 22 from external rainwater, the heating wire 22 is wired along the S-shaped wiring track, and the two ends of the electric heating tubes extend into the wire arrangement pipes 16 respectively, the wire arrangement pipes 16 of each electric heating tube 15 on the main conveying pipe 6 and the first auxiliary conveying pipe 8 are connected to the first controller 13, and the wire arrangement pipes 16 of each electric heating tube 15 on the second conveying pipe 9 extend to the second controller 14.

Furthermore, four connecting pipes are respectively connected to the upper, lower, left and right side walls of the oil pipe four-way joint 10, three filters 23 are respectively installed on the three connecting pipes, the three filters 23 are respectively located at the connecting positions of the connecting pipe a, the connecting pipe b and the lubricator 11 and the oil pipe four-way joint 10, each filter 23 comprises a fixing ring 25 and a filter screen 26, the filter screen 26 is in a cylindrical shape with a sealed bottom, and the fixing ring 25 is fixed at the top of the filter screen 26.

Specifically, each filter 23 further includes an annular plate 24, the annular plate 24 is fixed to the end face of the fixing ring 25 and is concentric with the end face, through grooves are formed in each annular plate 24 in an array mode, the number of the through grooves is the same as that of the through grooves of the connecting flanges, and the annular plate 24 can be connected between the two flanges through bolts.

It is worth to be noted that a branch pipe 18 is connected to the side wall of the oil pipe head 3, and valves 17 are provided on the branch pipe 18, the lubricator 11 and each connecting pipe 7 for controlling the flow of crude oil.

Further, a supporting plate 12 is sleeved on the outer wall of the auxiliary connecting pipe 5, and a first controller 13 and a second controller 14 are symmetrically fixed on the top of the supporting plate 12.

The heating wire 22 is electrically connected with the first controller 13 and the second controller 14, the heating wire 22 is made of nichrome wire, and the models of the first controller 13 and the second controller 14 are both AC-247 ELS.

The utility model discloses a theory of operation and use flow: when the utility model is used, a worker firstly installs and connects the Christmas tree body 1, the casing head 2 and the tubing head 3 according to the figure 1, sleeves the support plate 12 outside the main connecting pipe, respectively sleeves two electric heating cylinders 15 at the upper end and the lower end of the outer wall of each connecting pipe 7, fastens the electric heating cylinders through bolts, connects the Christmas tree with an oil outlet pipe in a well, and starts oil extraction work;

the heating wires 22 in all the electric heating cylinders 15 are started through the first controller 13 and the second controller 14, so that the heating wires 22 start to heat the pipe wall of the connecting pipe 7, the temperature in the connecting pipe 7 is heated to be similar to that in the well, and the temperature difference between the inside of the connecting pipe 7 and the inside of the well is reduced, so that the phenomenon of the reduction of the wax dissolving capacity of crude oil is effectively reduced, the precipitation of paraffin is greatly reduced, the blockage of the main conveying pipe 6, the first auxiliary conveying pipe 8 and the second auxiliary conveying pipe 9 caused by the paraffin adhering to the wall of the connecting pipe 7 is avoided, and the normal work of the Christmas tree is ensured;

the Christmas tree is characterized in that filters 23 are arranged at three interfaces of the oil pipe four-way joint 10, the three filters 23 are respectively arranged at the connecting parts of the connecting pipe a, the connecting pipe b and the lubricator 11 and the oil pipe four-way joint 10 through flanges, when crude oil flows into the connecting pipe a, the connecting pipe b and the lubricator 11 from the main conveying pipe 6 through the oil pipe four-way joint 10, the particle impurities in the petroleum are effectively blocked by the filter screens 26 of the three filters 23, so that the blockage of the first conveying pipe 8, the second conveying pipe 9 and the lubricator 11 can be avoided, the normal work of the Christmas tree can be further ensured, after working for a period of time, the connecting pipe a, the connecting pipe b, the connecting pipe c and the valve 17 on the lubricator 11 are closed, the first auxiliary conveying pipe 8, the second auxiliary conveying pipe 9 and the lubricator 11 are disassembled from the oil pipe four-way valve 10, the interior of the oil pipe cross 10 is cleaned, the three filters 23 are replaced, and the Christmas tree can continue to work after being reinstalled.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel prevent blockking up well head christmas tree, includes christmas tree body (1), casing head (2) and tubing head (3), its characterized in that: the oil production tree comprises an oil production tree body (1), an oil pipe head (3) and a casing head (2) which are sequentially connected from top to bottom, wherein the oil production tree body (1) comprises a main connecting pipe (4), an auxiliary connecting pipe (5) and a main conveying pipe (6) which are sequentially connected from bottom to top, the main connecting pipe (4) is connected to the top of the oil pipe head (3), the top of the main conveying pipe (6) is connected with an oil pipe cross joint (10) through a flange, two side walls of the oil pipe cross joint (10) are respectively connected with a first auxiliary conveying pipe (8) and a second auxiliary conveying pipe (9) through flanges, the top of the oil pipe cross joint (10) is connected with a blowout prevention pipe (11) through a flange, the main conveying pipe (6), the first auxiliary conveying pipe (8) and the second auxiliary conveying pipe (9) respectively comprise two connecting pipes (7) which are mutually connected through flanges, and electric heating barrels (15) are sleeved on the outer walls of two ends of each connecting pipe (7), every electrical heating section of thick bamboo (15) all include first semi-ring section of thick bamboo (19) and second semi-ring section of thick bamboo (20), and one side edge of first semi-ring section of thick bamboo (19) and second semi-ring section of thick bamboo (20) passes through the rotational pin and rotates the connection, and the opposite side edge passes through bolt fastening, every the inside of first semi-ring section of thick bamboo (19) and second semi-ring section of thick bamboo (20) all inlays and is equipped with heating wire (22) that are S type and arrange.

2. The novel anti-clogging wellhead Christmas tree of claim 1, wherein: the both sides of production tree body (1) are provided with first controller (13) and second controller (14) respectively, every drainage pipe (16), every are all installed to a side edge department of electric heating section of thick bamboo (15) wiring groove (21) have all been seted up to the inside of first semi-ring section of thick bamboo (19) and second semi-ring section of thick bamboo (20), and wiring groove (21) form S type wiring orbit, heating wire (22) are followed S type wiring orbit and are laid, and in its both ends extend to drainage pipe (16) respectively, on main conveyer pipe (6) and first secondary conveyer pipe (8) drainage pipe (16) of every electric heating section of thick bamboo (15) all are connected to on first controller (13), on second conveyer pipe (9) drainage pipe (16) of every electric heating section of thick bamboo (15) all extend to on second controller (14).

3. The novel anti-clogging wellhead Christmas tree of claim 1, wherein: four takeover are connected with respectively on four lateral walls about oil pipe cross (10) about from top to bottom, and wherein install three filter (23), three respectively on three takeover three filter (23) are located the junction of takeover a, takeover b and lubricator (11) and oil pipe cross (10), every respectively filter (23) all include solid fixed ring (25) and filter screen (26), filter screen (26) are the cylindric that the bottom sealed, and gu fixed ring (25) are fixed in the top of filter screen (26).

4. The novel anti-clogging wellhead Christmas tree according to claim 3, wherein: each filter (23) still includes annular plate (24), and annular plate (24) are fixed in on the terminal surface of solid fixed ring (25), and concentric with it, every logical groove has all been seted up in the array on annular plate (24), and annular plate (24) accessible bolted connection is between two flanges.

5. The novel anti-clogging wellhead Christmas tree of claim 1, wherein: the side wall of the oil pipe head (3) is connected with a branch pipe (18), and valves (17) are arranged on the branch pipe (18), the blowout prevention pipe (11) and each connecting pipe (7).

6. The novel anti-clogging wellhead Christmas tree of claim 2, wherein: the outer wall of the auxiliary connecting pipe (5) is sleeved with a supporting plate (12), and the first controller (13) and the second controller (14) are symmetrically fixed to the top of the supporting plate (12).