阅读说明：本技术 井下地面多功能一体化除蜡装置 (Underground ground multifunctional integrated paraffin removal device ) 是由 杜黎航 戴拥军 李娜 李雷 文泉 向东 王秀梅 李茂华 于 2019-12-06 设计创作，主要内容包括：本发明公开了一种井下地面多功能一体化除蜡装置,包括两个永磁填料除蜡器、套管阀门、井口四通以及井下节流器,套管阀门进油端连接着一根出油管,出油管外部通过井口大法兰同轴间隔套装着一根出油套管,出油管下端通过螺纹连接着油管接箍座,油管接箍座内设置着带有节流器滤网的井下节流器,井下节流器的上端与一个井下永磁填料除蜡器下端部相连；井口四通出油端通过生产阀门连接着一根井口出油管,井口出油管内安装着一个井口永磁填料除蜡器,该除蜡器进油端与其出油端之间的井口出油管上设置着一根排蜡旁通管。本发明利用永磁填料除蜡器进行物理除蜡,能够解决地面、井下管线原油结腊问题,降低企业生产成本。(The invention discloses a multifunctional integrated wax removal device for an underground ground, which comprises two permanent magnet filler wax removers, a sleeve valve, a wellhead four-way joint and an underground restrictor, wherein the oil inlet end of the sleeve valve is connected with an oil outlet pipe, the outside of the oil outlet pipe is coaxially sleeved with an oil outlet sleeve at intervals through a large wellhead flange, the lower end of the oil outlet pipe is connected with an oil pipe coupling seat through threads, the underground restrictor with a restrictor filter screen is arranged in the oil pipe coupling seat, and the upper end of the underground restrictor is connected with the lower end of one underground permanent magnet filler wax remover; the oil outlet end of the four-way well head is connected with a well head oil outlet pipe through a production valve, a well head permanent magnetic filler wax remover is installed in the well head oil outlet pipe, and a wax discharge bypass pipe is arranged on the well head oil outlet pipe between the oil inlet end of the wax remover and the oil outlet end of the wax remover. The invention utilizes the permanent magnetic filler wax remover to carry out physical wax removal, can solve the problem of wax deposition of crude oil of ground and underground pipelines, and reduces the production cost of enterprises.)

1. The utility model provides a multi-functional integrated wax removal device in ground in pit, includes two permanent magnetism filler wax removers, sleeve valve, well head cross and throttle in the pit, characterized by: the oil outlet end of the sleeve valve is connected with a wellhead four-way through a middle valve, the oil inlet end of the sleeve valve is connected with an oil outlet pipe, the outer part of the oil outlet pipe is sleeved with an oil outlet sleeve pipe at a coaxial interval through a wellhead large flange, the lower end of the oil outlet pipe is connected with an oil pipe coupling seat through threads, an underground throttle with a throttle filter screen is arranged in the oil pipe coupling seat, the upper end of the underground throttle is connected with the lower end part of an underground permanent magnetic filler wax remover, the center of the underground throttle is provided with an oil outlet channel, the top end of the oil outlet channel is provided with an inverted cone-shaped diffusion surface, 12 diffusion holes are uniformly arranged on the peripheral wall of the underground throttle at the upper end of the oil outlet channel at intervals, the permanent magnetic filler wax remover comprises an outer shell, 6 oil outlet holes are uniformly arranged on the peripheral edge of the top of the outer shell at intervals, the inner shell is coaxially, the lower end of the inner shell is closed, a permanent magnet filler pipe is arranged at the center of the inner shell, and the upper end and the lower end of the permanent magnet filler pipe are both open; the upper end of the underground permanent magnetic filler paraffin removal device is provided with an underground fixer through a connecting coupling, an upper spring and a lower spring are sleeved in the underground fixer respectively, and the top end of the underground fixer is provided with an anti-drop head; the oil outlet end of the wellhead four-way is connected with a wellhead oil outlet pipe through a production valve, a wellhead permanent magnetic filler wax remover is installed in the wellhead oil outlet pipe, and a wax discharge bypass pipe is arranged on the wellhead oil outlet pipe between the oil inlet end of the wax remover and the oil outlet end of the wax remover.

2. The wax removal device of claim 1, wherein: an umbrella-shaped puncture-proof diffusion surface is arranged in the oil inlet end of the wellhead permanent magnetic filler paraffin remover.

Technical Field

The invention relates to a multifunctional integrated underground ground paraffin removal device.

Background

In the important discovery obtained in the petroleum industry in recent years, the large oil area of the Xinjiang krameria lake is a very rush, the area is a 10-hundred million-ton grade conglomerate oil area found in the depressed central area of the Quadrature basin Mar lake by Xinjiang oil field company, and the three-grade petroleum geological reserves are found to be 12.4-hundred million tons at present, wherein the found reserves are 5.2 million tons, which is equivalent to reconstructing a krameria oil field. The reservoir characteristics of the Ma lake oil field mainly comprise thin oil, and in the process of developing the thin oil, the temperature of crude oil from the bottom flow to the wellhead can be continuously reduced to cause wax deposition in an oil pipe, so that the oil pipe is blocked and cannot be continuously exploited, and therefore wax removal is required. And the wax precipitation position of the autospray well in the Mar lake oil area is 600-1200 m below the well mouth. At present, the wax removal means used for thin oil self-blowing wells developed in new oil fields is mainly mobile wax removal (a mechanical wax removal vehicle is adopted). The disadvantages are as follows: 1, in the lifting process, the counting error of a guide switch of the electromechanical device is easy to occur, so that a tapping steel wire rope is broken, and the damage to personnel and equipment caused by mechanical accidents is easy to occur; in the lowering process, the guide switch fails to cause the steel wire to be broken after being twisted, so that the plumb bob of the wax scraping sheet falls into the bottom of the well to influence the production; 2. the paraffin removal process is characterized in that the paraffin is excessive, the paraffin scraping sheet is wrapped by the paraffin to cause top drilling, a steel wire is easy to twist, the paraffin scraping sheet falls, an oil pipe is blocked, the oil well is stopped, production can be recovered only by repairing the well, well killing operation can be performed in handling accidents, and the self-blowing well is easy to damage, so that the self-blowing well cannot be repaired. 3. 3 people are needed to operate in the operation process, the paraffin removal cost is high, and the paraffin removal cost of enterprises is increased. And each well can be cleaned by installing a wax scraper, and after the cleaning, the equipment is taken down to the lower well for cleaning wax, and the personnel still need to work high above the ground, so that the potential safety hazard and the labor intensity of the personnel are increased. 4. The distance between the base and the construction site is long, and the transportation cost is high. The traditional paraffin removal mode needs a steel wire to connect a paraffin scraping sheet and a weighting rod. The material cost of the steel wire and the cost of manually pouring the steel wire are not small expenses in paraffin removal, and the production cost of enterprises is increased.

Disclosure of Invention

The invention aims to provide a multifunctional integrated underground surface paraffin removal device, which can solve the problem of wax accumulation of crude oil of ground and underground pipelines and reduce the production cost of enterprises.

The invention aims to realize the purpose, and the underground ground multifunctional integrated paraffin removal device comprises two permanent magnetic filler paraffin removers, a sleeve valve, a well head four-way and an underground throttleer, wherein the oil outlet end of the sleeve valve is connected with the well head four-way through a middle valve, the oil inlet end of the sleeve valve is connected with an oil outlet pipe, the outer part of the oil outlet pipe is coaxially sleeved with an oil outlet sleeve at intervals through a large flange of the well head, the lower end of the oil outlet pipe is connected with an oil pipe collar seat through threads, the underground throttleer with a throttleer filter screen is arranged in the oil pipe collar seat, the upper end of the underground throttleer is connected with the lower end part of the underground permanent magnetic filler paraffin remover, the center of the underground throttleer is provided with an oil outlet channel, the top end of the oil outlet channel is provided with an inverted cone-shaped diffusion surface, the outer peripheral wall of the underground at the upper end of the oil outlet, 6 oil outlets are uniformly arranged on the outer periphery of the top of the outer shell at intervals, an inner shell is coaxially connected with the inner shell at intervals through threads, three rectangular through grooves are uniformly arranged on the axial outer periphery wall of the inner shell at intervals, the lower end of the inner shell is closed, a permanent magnet filler pipe is arranged at the center of the inner shell, and the upper end and the lower end of the permanent magnet filler pipe are both open; the upper end of the underground permanent magnetic filler paraffin removal device is provided with an underground fixer through a connecting coupling, an upper spring and a lower spring are sleeved in the underground fixer respectively, and the top end of the underground fixer is provided with an anti-drop head; the oil outlet end of the wellhead four-way is connected with a wellhead oil outlet pipe through a production valve, a wellhead permanent magnetic filler wax remover is installed in the wellhead oil outlet pipe, and a wax discharge bypass pipe is arranged on the wellhead oil outlet pipe between the oil inlet end of the wax remover and the oil outlet end of the wax remover.

When the device is used, the device is arranged inside an oil pipe and on the ground to simultaneously remove wax. The working principle is as follows: the underground paraffin removal equipment is arranged at the position of the well depth of 1400m, and when bottom well crude oil enters the underground paraffin removal equipment through the underground filter screen primary throttling valve, the problem of paraffin precipitation inside an oil pipe is solved through the underground permanent magnet filler paraffin remover. When the crude oil continuously flows into the wellhead, the crude oil is continuously dewaxed through the wellhead permanent magnetic filler wax remover to solve the problem of crude oil wax precipitation of the ground pipeline.

The installation step of the underground ground multifunctional integrated paraffin removal device comprises the following steps: 1. and (3) lowering the coupling at 1400 meters underground during well completion of the oil well. 2. The downhole wax remover is then lowered from the surface through the release from the wellhead through the inside of the tubing to the collar. 3. The upper part of the underground paraffin remover is fixed on the inner wall of the oil pipe by a fixer, and the instrument is arranged in the coupling for sealing. The sealing mode is chamfer seamless sealing, and the later stage bailing is facilitated. 4. Crude oil enters an oil pipe, and after paraffin removal through an underground throttle and a permanent magnet filler paraffin remover, the crude oil flows upwards. 5. And a ground wax remover is arranged at the well mouth, and crude oil enters a ground pipe network after passing through the production gate and the ground wax remover. The device 1 of the invention has low cost for paraffin removal. Compared with the traditional mechanical paraffin removal, a large amount of manpower and material resources are consumed. The underground ground multifunctional integrated paraffin remover only needs to be installed inside an oil pipe, and automatic paraffin removal is carried out through the paraffin remover in the later stage. 2. The service life is long. The equipment can be used for 2-3 years in a normal state without replacement. 3. The operation risk is low. Manual treatment is not needed in the paraffin removal process, and overhead operation is avoided. 4. The wax removal and the scale removal can be simultaneously carried out, so that the smoothness of an oil pipe is ensured, the high and stable yield of an oil well is realized, and the continuous self-blowing is realized.

The working principle of the underground restrictor is as follows: the crude oil flows into the main hole of the throttling device through the filter screen, diffuses through the 12 holes and then flows into the wax remover for permanent magnet wax removal.

The permanent magnetic filler in the underground paraffin removal device generates a magnetic field, and the magnetic field is utilized to carry out permanent magnetic paraffin removal; the magnetic field can destroy the molecular structure of wax in crude oil, so that the crude oil does not wax in the flowing process of oil pipes and ground pipelines. In the use process, the smoothness of crude oil of the oil pipe and the ground pipeline is well ensured, the service life is long, the installation and the salvage are easy, and the wide praise of workers is obtained. And (3) comparing the economic benefits: the conventional use of paraffin removal trucks for single well costs: the paraffin removal depth is 1200-1400 m): 500 yuan/time of single well, 300 yuan/day/person of labor cost (4 persons are allocated to each paraffin removal vehicle), 4-5 wells can be cleaned by one paraffin removal vehicle in the Marhu area one day, the single well needs to be cleaned once in 1.5 days, 500 yuan/15 times of each year of paraffin removal cost, 12 months =90000 yuan (no labor cost, vehicle loss, oil cost and the like are included). Using a downhole ground multifunctional integrated wax remover: the cost of a single well only needs 97000 yuan, the service life is 2-3 years, the cost of the enterprise can be saved by 18000 yuan 97000 yuan =83000 yuan according to the minimum service life of 2 years, and the cost of the single well can be saved by 41500 yuan for the enterprise every year.

Drawings

The present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a front view connection structure of the present invention;

FIG. 2 is an enlarged schematic view of a portion of the downhole wax remover of the present invention.

Detailed Description

A multifunctional integrated underground ground wax removal device is shown in figures 1 and 2 and comprises two permanent magnet filler wax removal devices 26 and 5, a sleeve valve 9, a wellhead four-way 8 and an underground restrictor 17, wherein the oil outlet end of the sleeve valve 9 is connected with the wellhead four-way 8 through a middle valve. An oil outlet pipe is connected to the oil inlet end of a sleeve valve, an oil outlet sleeve 24 is sleeved outside the oil outlet pipe through a large wellhead flange 25 at the same shaft at intervals, the lower end of the oil outlet pipe is connected with an oil pipe coupling seat 18 through threads, an underground throttle 17 with a throttle filter screen 19 is arranged in the oil pipe coupling seat 18, the upper end of the underground throttle 17 is connected with the lower end of an underground permanent magnet filler paraffin remover 26, an oil outlet channel is arranged at the center of the underground throttle 17, an inverted conical diffusion surface 20 is arranged at the top end of the oil outlet channel, and 12 diffusion holes 16 are uniformly arranged on the outer peripheral wall of the underground throttle at the upper end of the oil outlet channel at intervals. As shown in fig. 2, the permanent magnetic filler wax remover 26 comprises an outer shell, wherein 6 oil outlet holes 22 are uniformly arranged on the outer periphery of the top of the outer shell at intervals, the outer shell is coaxially connected with an inner shell 14 at intervals through threads 27, three rectangular through grooves 15 are uniformly arranged on the axial peripheral wall of the inner shell 14 at intervals, the lower end of the inner shell 14 is closed, a permanent magnetic filler pipe 21 is arranged at the center of the inner shell, and the upper end and the lower end of the permanent magnetic filler pipe 21 are both open; the upper end of the underground permanent magnetic filler wax remover is provided with an underground fixer 12 through a connecting coupling 23, the underground fixer 12 is internally sleeved with an upper spring 11 and a lower spring 13 respectively, and the top end of the underground fixer 12 is provided with an anti-falling head 10; the oil outlet end of the wellhead four-way joint 8 is connected with a wellhead oil outlet pipe 3 with a plug 4 through a production valve, a wellhead permanent magnetic filler wax remover 5 is installed in the wellhead oil outlet pipe 3, and a wax discharge bypass pipe 2 is arranged on the wellhead oil outlet pipe between the oil inlet end of the wax remover and the oil outlet end of the wax remover. The wax discharged from the wax discharge bypass pipe 2 is discharged from the oil outlet branch pipe 1.

An umbrella-shaped puncture-proof diffusion surface 7 is arranged in the oil inlet end of the wellhead permanent magnetic filler wax remover 5, so that crude oil in an oil pipe is prevented from directly impacting the wellhead wax remover. The structure of the wellhead permanent magnetic filler wax remover 5 is the same as that of the underground permanent magnetic filler wax remover 26, wherein the wellhead permanent magnetic filler wax remover 5 is also provided with a rectangular through groove 6.

The permanent magnetic filler wax remover disclosed by the invention is the prior art, and the specific structure of the permanent magnetic filler wax remover is not described in detail.