阅读说明：本技术 高含气井有杆泵举升提效装置及工艺管柱 (High-gas-content well sucker-rod pump lifting effect-improving device and process pipe column ) 是由 智勤功 刘丙生 杭发琴 肖姝 金鑫 古光明 岳振玉 马俊华 冯辉 费秀英 于 2020-06-22 设计创作，主要内容包括：本发明公开了高含气井有杆泵举升提效装置及工艺管柱,包括：双通管,所述双通管开设上中心通道、下中心通道,所述双通管还开设轴向的上偏心通道、下偏心通道；内管,所述内管上端连接双通管,所述内管上端口只与双通管的下中心通道下端口连通；外管,所述外管套在内管外部,内外管之间构成环形空间,所述外管上端连接双通管,所述外管上端口只与双通管的下偏心通道下端口连通；筛管,所述筛管连接在外管下端,筛管下端连接插入式密封；插入式密封,所述插入式密封下端连接外管短节,所述插入式密封使内管与外管之间的底部空间隔断。本发明降低进入抽油泵液体的含气量,提高泵效；同时降低油井井底流压,放大生产压差,提高油井产能。(The invention discloses a sucker-rod pump lifting effect-improving device and a process pipe column for a high-content gas well, comprising: the double-way pipe is provided with an upper central channel and a lower central channel, and is also provided with an axial upper eccentric channel and an axial lower eccentric channel; the upper end of the inner pipe is connected with the double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe; the outer pipe is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe; the sieve tube is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal; and the lower end of the plug-in seal is connected with the short section of the outer pipe, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe. The invention reduces the gas content of the liquid entering the oil well pump and improves the pump efficiency; meanwhile, the flow pressure at the bottom of the oil well is reduced, the production pressure difference is amplified, and the productivity of the oil well is improved.)

1. High gas-containing well sucker-rod pump lifts and carries and imitates device, its characterized in that includes:

the double-way pipe is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with the double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

and the lower end of the plug-in seal is connected with the short section of the outer pipe, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe.

2. The high gas well sucker-rod pump lifting device of claim 1, further comprising:

and the packer is connected to the lower end of the outer pipe nipple, and the packer enables the bottom space between the outer pipe nipple and the sleeve to be isolated.

3. The high gas well sucker-rod pump lift device of claim 1 or 2, further comprising:

and the lower port of the connecting pipe is only communicated with the upper port of the upper central channel of the double-way pipe.

4. The high gas well sucker rod pump lifting device of claim 1 or 2, wherein the lower port of the lower central channel of the double pipe is a mixed liquid inlet, the upper port of the upper eccentric channel of the double pipe is a mixed liquid outlet, the lower port of the lower eccentric channel of the double pipe is a liquid inlet, and the upper port of the upper central channel of the double pipe is a liquid outlet.

5. High gas-containing well sucker-rod pump lifts and carries and imitate technology tubular column, including oil pipe, oil-well pump, oil pipe is connected to the pump barrel upper end of oil-well pump, and the pump barrel lower extreme is connected with the connecting pipe, the sucker rod is connected to the plunger upper end of oil-well pump, its characterized in that still lifts including high gas-containing well sucker-rod pump and carries and imitate the device, high gas-containing well sucker-rod pump lifts and carries and imitate device upper end and connect the oil-well pump, high gas-containing well sucker-rod pump lifts and carries and imitate the device and include:

the double-way pipe is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with the double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

the lower end of the plug-in seal is connected with the short section of the outer pipe, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe;

and the packer is connected to the lower end of the outer pipe nipple, and the packer enables the bottom space between the outer pipe nipple and the sleeve to be isolated.

6. The high gas well sucker-rod pump lift efficiency-enhancing process string of claim 5, further comprising:

and the lower port of the connecting pipe is only communicated with the upper port of the upper central channel of the double-way pipe.

7. The high gas well sucker rod pump lifting efficiency-raising process pipe column of claim 5 or 6, wherein the lower port of the lower central channel of the double pipe is a mixed liquid inlet, the upper port of the upper eccentric channel of the double pipe is a mixed liquid outlet, the lower port of the lower eccentric channel of the double pipe is a liquid inlet, and the upper port of the upper central channel of the double pipe is a liquid outlet.

Technical Field

The invention relates to the technical field of production of oil wells with high gas-liquid ratio, in particular to a sucker-rod pump lifting effect-improving device and a process pipe column for a high-gas-content well.

Background

With the development of oil fields, the victory oil field gradually increases the development strength of low-permeability oil reservoirs. The low-permeability reservoir has the characteristics of deep reservoir, low permeability, high liquid-gas ratio of oil well production and the like. The low-permeability reservoir oil well is usually produced by adopting a sucker rod pump lifting mode, is influenced by the gas content of produced liquid of the oil well, and has low fullness of an oil well pump; even the situation that the airlock of the oil well pump can not work normally occurs when the gas-liquid ratio is high. In order to improve the pump efficiency, a gas-liquid separation device is usually installed at the lower end of an oil well pump, stratum produced liquid firstly passes through the gas-liquid separation device, the gas content of the liquid entering the oil well pump is reduced, the separation efficiency of the gas-liquid separation device is about 20 percent due to the limitation of the current technical level, and the high-efficiency production requirement of an oil well with a high gas-liquid ratio cannot be met.

Publication (bulletin) No.: CN203730267U, publication (public notice) day: 2014-07-23 relates to an oil-well pump of taking gas-liquid separation device, including the oil-well pump body, the oil-well pump body includes inner tube and cover and establishes the outer tube outside the inner tube, the inner tube with form annular gap between the outer tube, the inner tube upper end and the hollow sucker rod switch-on, the outer tube upper end and the oil pipe switch-on, the inner tube with the tip top-down will be provided with traveling valve and one-way device that switches on in proper order under the annular gap of outer tube, oil-well pump body lower extreme is provided with gas-liquid separation device. When the oil well pump works, well liquid is separated from gas through the gas-liquid separation device, and further the pumping efficiency of the oil well pump is improved.

Publication (bulletin) No.: CN207813877U, publication (public notice) day: 2018-09-04 relates to an anti-airlock oil well pump, a gas-liquid separator and an oil extraction device. The airlock-proof oil well pump comprises a pump barrel, an oil well pump plunger and a fixed valve, wherein the oil well pump plunger and the fixed valve are positioned in the pump barrel, the lower end of the fixed valve is connected with a gas-liquid separator, the gas-liquid separator comprises a liquid inlet barrel communicated with a valve hole of the fixed valve through an upper end opening, at least one flow deflector with an upper opening is arranged on the periphery of the liquid inlet barrel, a containing cavity is formed by the flow deflector and the outer barrel wall of the liquid inlet barrel in a surrounding mode, a liquid inlet hole is formed in the containing cavity in the barrel wall of the liquid inlet barrel, oil bypasses the flow deflector from the liquid inlet barrel to enter the containing cavity and enter the liquid inlet barrel through the liquid inlet hole, and associated gas in the oil floats upwards in the oil bypassing process. Can realize the effective separation of oil gas, fluid can carry out the liquid seal to the feed liquor hole in the chamber that holds of water conservancy diversion piece, prevents that gas from flowing into feed liquor bucket inner chamber along the feed liquor hole, can realize gaseous discharge in advance in the fluid through simple structure, prevents that gas from getting into the pump along with fluid in, and then leads to pump airlock and take out the problem that does not oil.

Publication (bulletin) No.: CN202883333U, publication (public notice) day: 2013-04-17 relates to a novel special oil-well pump for liquid drainage and gas production, and belongs to the field of oil and gas production. The device mainly comprises a hollow sucker rod, a hollow rod joint, an oil pipe joint, an outer pump barrel, an inner pump barrel, an outer pump barrel liquid inlet channel, an outer pump barrel liquid discharge channel, a back-falling liquid return channel, a plunger, a fixed valve, a traveling valve, an oil sleeve annulus and an inner and outer pump barrel annulus, wherein the lower part of the oil pipe joint is connected with the outer pump barrel; the lower part of the hollow rod joint is connected with the upper part of a plunger, and the plunger is positioned in the inner pump barrel; the oil sleeve annulus is communicated with the inner pump barrel annulus through an outer pump barrel liquid inlet channel, the outer pump barrel is communicated with the oil pipe through an outer pump barrel liquid outlet channel, the fixed valve is installed on an oil outlet valve body at the bottom of the inner pump barrel, and the traveling valve is installed on an oil inlet valve body of the plunger. The invention can effectively separate gas and liquid at the bottom of the well, reduce gas interference, improve pump efficiency and better exert the capacity of carrying liquid by the energy of the gas.

Publication (bulletin) No.: CN106285620B, publication (public notice) day: 2018-08-14 provides a high gas-oil ratio oil well gas-liquid separation system, which comprises: the device comprises a casing arranged in a well and a dual-channel gas-liquid mixing separator, a gas-liquid mixing transmission channel assembly and a liquid inlet device assembly which are arranged in the casing and sequentially connected through a tubing coupling from top to bottom, wherein the length of the casing is equal to the distance between a well head and a well bottom; wherein, the top of the double-channel gas-liquid separator is connected with the oil pump, and the bottom of the liquid inlet device assembly is connected with the sand settling pipe. By improving the rotational flow speed, the invention is additionally provided with the airflow channel and the rotational flow radius, and the underground gas-sand-oil separation efficiency of the high gas-oil ratio mechanical oil production well is improved; meanwhile, through the arrangement of the check valve of the gas-liquid mixing channel and the double-layer telescopic pipe, the effect of preventing the flushing liquid from flowing backwards during flushing is achieved, and the purpose of facilitating the unloading of the liquid column on the upper part of the packer during underground operation is achieved.

The technical scheme of the disclosed technology, the technical problems to be solved and the beneficial effects are all different from the technical scheme of the invention, or the technical field or the application occasion is different, and no technical inspiration exists in the technical scheme disclosed above.

Disclosure of Invention

The invention aims to provide a lifting and efficiency-improving device and a process pipe column of a sucker-rod pump of a high-gas-content well aiming at the defects in the prior art, so that the gas content of liquid entering an oil pump is reduced, and the pump efficiency is improved; meanwhile, the flow pressure at the bottom of the oil well is reduced, the production pressure difference is amplified, and the productivity of the oil well is improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

high gas-containing well sucker-rod pump lifts and carries effect device includes:

the double-way pipe is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with the double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

and the lower end of the plug-in seal is connected with the short section of the outer pipe, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe.

Further, still include:

and the packer is connected to the lower end of the outer pipe nipple, and the packer enables the bottom space between the outer pipe nipple and the sleeve to be isolated.

Further, still include:

and the lower port of the connecting pipe is only communicated with the upper port of the upper central channel of the double-way pipe.

Further, the lower port of the lower central channel of the double-way pipe is a mixed liquid inlet, the upper port of the upper eccentric channel of the double-way pipe is a mixed liquid outlet, the lower port of the lower eccentric channel of the double-way pipe is a liquid inlet, and the upper port of the upper central channel of the double-way pipe is a liquid outlet.

In order to achieve the purpose, the invention adopts the following technical scheme:

high gas-containing well sucker-rod pump lifts and carries and imitate technology tubular column, including oil pipe, oil-well pump, oil pipe is connected to the pump barrel upper end of oil-well pump, and the pump barrel lower extreme is connected with the connecting pipe, the sucker rod is connected to the plunger upper end of oil-well pump, still including high gas-containing well sucker-rod pump lift to carry and imitate the device, high gas-containing well sucker-rod pump lifts and carries and imitate the device upper end and connect the oil-well pump, high gas-containing well sucker-rod pump lifts and carries and imitate the device and include:

the double-way pipe is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with the double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

the lower end of the plug-in seal is connected with the short section of the outer pipe, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe;

and the packer is connected to the lower end of the outer pipe nipple, and the packer enables the bottom space between the outer pipe nipple and the sleeve to be isolated.

Further, still include:

and the lower port of the connecting pipe is only communicated with the upper port of the upper central channel of the double-way pipe.

Further, the lower port of the lower central channel of the double-way pipe is a mixed liquid inlet, the upper port of the upper eccentric channel of the double-way pipe is a mixed liquid outlet, the lower port of the lower eccentric channel of the double-way pipe is a liquid inlet, and the upper port of the upper central channel of the double-way pipe is a liquid outlet.

Compared with the prior art, the invention has the following beneficial effects:

1. a double-way pipe is adopted to change a stratum produced liquid inlet pump flow passage so as to separate a mixed liquid flow passage from a pump inlet liquid flow passage;

2. the settling separation distance of the mixed liquid is enlarged through the underground pipe column structure, the settling distance of the mixed liquid is from the outlet of the double-pass pipe to the lowest section of the outer pipe, gas and liquid in the mixed liquid are fully separated in the settling process, the gas proportion of liquid entering a pump is reduced, and the gas-liquid separation efficiency is improved;

3. the packer in the underground process pipe column isolates an oil layer, a sleeve and the outer pipe annulus, and the oil layer, the inner pipe annulus and the outer pipe annulus are isolated in a plug-in sealing mode, so that mixed liquid flows out of the bottom of the well from the inner pipe, the flow rate of the mixed liquid is improved, the production pressure difference is amplified, and the productivity of the oil well is improved.

Drawings

FIG. 1 is a schematic structural diagram of a sucker-rod pump lifting device and a process pipe column for a high gas-containing well according to the present invention;

FIG. 2 is a schematic diagram of a two-pass tube configuration;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a sectional view a-a of fig. 3.

In the figure: the oil pumping device comprises a sucker rod 1, an oil pipe 2, an oil well pump 3, a connecting pipe 4, a double-way pipe 5, an outer pipe 6, an inner pipe 7, a sieve pipe 8, an insertion type seal 9, a packer 10, a sleeve 11 and an oil layer 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 4, the present invention provides a technical solution:

high gas-containing well sucker-rod pump lifts and carries effect device includes:

the double-way pipe 5 is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with a double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe 6 is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube 8 is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

and the lower end of the plug-in seal is connected with an outer pipe nipple, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe. The plug seal 9 is conventional in the art.

Further, still include:

and the packer 10 is connected to the lower end of the outer pipe nipple, and the packer enables the bottom space between the outer pipe nipple and the sleeve 11 to be isolated.

Further, still include:

and the lower port of the connecting pipe is only communicated with the upper port of the upper central channel of the double-way pipe. The upper port of the connecting pipe is communicated with the lower end of a pump cylinder of the oil well pump.

Further, the lower port of the lower central channel of the double-way pipe is a mixed liquid inlet 13, the upper port of the upper eccentric channel of the double-way pipe is a mixed liquid outlet 14, the lower port of the lower eccentric channel of the double-way pipe is a liquid inlet 15, and the upper port of the upper central channel of the double-way pipe is a liquid outlet 16.

Referring to fig. 1 to 4, the present invention adopts the following technical solutions:

high gas-containing well sucker-rod pump lifts and carries and imitates technology tubular column, including oil pipe 2, oil-well pump 3, oil pipe is connected to the pump barrel upper end of oil-well pump, and the pump barrel lower extreme is connected with the connecting pipe, sucker rod 1 is connected to the plunger upper end of oil-well pump, still lifts including high gas-containing well sucker-rod pump and carries and imitate the device, high gas-containing well sucker-rod pump lifts and carries and imitate the device upper end and connect the oil-well pump.

Referring to fig. 1 to 4, the upper end of the oil pump is connected to the oil pipe, the lower end of the oil pump is connected to the connecting pipe, and the sucker rod is disposed in the oil pipe and connected to the upper end of the oil pump; the upper end of the two-way pipe is connected with the connecting pipe, and the lower end of the two-way pipe is respectively connected with the outer pipe and the inner pipe; the upper end of the sieve tube is connected with the outer tube, the lower end of the sieve tube is connected with the plug-in seal, the lower end of the plug-in seal is connected with the outer tube nipple, and the packer is arranged at the lower end of the outer tube nipple. The sucker rod, the oil pipe, the oil pump, the connecting pipe, the double-way pipe, the outer pipe, the inner pipe, the sieve pipe and the plug-in type seal are arranged in the sleeve after being connected according to the installation requirement.

The double-way pipe adopts a double-channel structure, so that a mixed liquid channel is separated from a pump inlet liquid channel. Mixed liquor flowing into the bottom of the well from an oil layer flows in from a mixed liquor inlet at the lower end of the double-pass pipe through the inner pipe, and flows out from a mixed liquor outlet at the upper end of the double-pass pipe to an annular space between the sleeve and the outer pipe, so that the settling distance of the mixed liquor is enlarged, and the distance between the outlet of the double-pass pipe and the sieve pipe is the settling distance of the mixed liquor; in the process of sedimentation, gas and liquid in the mixed liquid are fully separated, namely oil liquid in the sleeve falls, gas rises, separation is realized, the gas proportion in the liquid entering the pump is reduced, and the gas-liquid separation efficiency is improved; the liquid separated by sedimentation flows into the annular space between the outer pipe and the inner pipe from the sieve pipe, flows in from the liquid inlet at the lower end of the double-pass pipe, flows out from the liquid outlet at the upper end of the double-pass pipe, and enters the connecting pipe.

The mixed liquid enters the bottom of an oil well from an oil layer, the packer isolates the oil layer, the sleeve and the outer pipe annulus, the oil layer, the inner pipe annulus and the outer pipe annulus are isolated in an inserting type sealing manner, the mixed liquid flows through the inner pipe, enters the double-way pipe from the mixed liquid inlet at the lower end of the double-way pipe and flows out from the mixed liquid outlet at the upper end of the double-way pipe; the gas is separated from the mixed liquid and moves upwards under the influence of the pressure reduction; the separated liquid flows downwards under the action of gravity, flows into the annular space between the inner pipe and the outer pipe through the sieve pipe, enters the double-way pipe from the liquid inlet at the lower end of the double-way pipe, flows out from the liquid outlet at the upper end of the double-way pipe, and enters the oil well pump through the connecting pipe; the sucker rod drives the oil pump to move up and down, and liquid enters the oil pipe through the oil pump and is lifted to the ground.

A high-gas-content well sucker-rod pump lifting effect-improving device and a process pipe column adopt a double-way pipe to separate a mixed liquid flow passage from a pump inlet liquid flow passage; the mixed liquid sedimentation distance is enlarged through the underground pipe column structure, and the distance between the outlet of the double-pass pipe and the sieve pipe is the sedimentation distance of the mixed liquid; in the process of sedimentation, gas and liquid in the mixed liquid are fully separated, namely oil liquid in the sleeve falls, gas rises, separation is realized, the gas proportion in the liquid entering the pump is reduced, and the gas-liquid separation efficiency is improved; the packer in the underground process pipe column isolates an oil layer, a sleeve and the outer pipe annulus, and the oil layer, the inner pipe annulus and the outer pipe annulus are isolated in a plug-in sealing mode, so that mixed liquid flows out of the bottom of the well from the inner pipe, the flow rate of the mixed liquid is improved, the production pressure difference is amplified, and the productivity of the oil well is improved.

The technology is mainly applied to the production field of oil wells with high gas-liquid ratio. With the development of oil fields, the victory oil field gradually increases the development strength of low-permeability oil reservoirs. The low-permeability reservoir has the characteristics of deep reservoir, low permeability, high liquid-gas ratio of oil well production and the like. The low-permeability reservoir oil well is usually produced by adopting a sucker rod pump lifting mode, is influenced by the gas content of produced liquid of the oil well, and has low fullness of an oil well pump; even the situation that the airlock of the oil well pump can not work normally occurs when the gas-liquid ratio is high. The double-pass pipe designed by the invention adopts a double-channel structure, and changes a flow passage of stratum produced liquid into a pump; the liquid inflow channel produced at the bottom of the well is separated from the oil inlet channel of the oil well pump, so that the sedimentation volume is increased, and the gas-liquid separation efficiency is improved; the designed process pipe column isolates the stratum and the shaft, improves the outflow rate of the stratum, amplifies the production pressure difference and improves the productivity of the oil well. The technology can solve the problem of lifting of the high-gas-content well and has wide application prospect.

Example 2:

referring to fig. 1 to 4, the present invention provides a technical solution:

high gas-containing well sucker-rod pump lifts and carries effect device includes:

the double-way pipe 5 is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with a double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe 6 is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube 8 is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

and the lower end of the plug-in seal is connected with an outer pipe nipple, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe. The plug seal 9 is conventional in the art.

Further, still include:

and the packer 10 is connected to the lower end of the outer pipe nipple, and the packer enables the bottom space between the outer pipe nipple and the sleeve 11 to be isolated.

Example 3:

referring to fig. 1 to 4, the present invention provides a technical solution:

high gas-containing well sucker-rod pump lifts and carries effect device includes:

the double-way pipe 5 is provided with an upper central channel and a lower central channel, the upper port of the upper central channel is unblocked, the lower port of the lower central channel is unblocked, the lower end of the upper central channel and the upper end of the lower central channel are not mutually communicated in the double-way pipe body, the double-way pipe is also provided with an axial upper eccentric channel and an axial lower eccentric channel, the upper port of the upper eccentric channel is unblocked, the lower port of the upper eccentric channel is communicated with the upper end of the lower central channel, the lower port of the lower eccentric channel is unblocked, and the upper port of the lower eccentric channel is communicated with the lower end of the upper central channel;

the upper end of the inner pipe is connected with a double-pass pipe, and the upper port of the inner pipe is only communicated with the lower port of the lower central channel of the double-pass pipe;

the outer pipe 6 is sleeved outside the inner pipe, an annular space is formed between the inner pipe and the outer pipe, the upper end of the outer pipe is connected with the double-way pipe, and the upper port of the outer pipe is only communicated with the lower port of the lower eccentric channel of the double-way pipe;

the sieve tube 8 is connected to the lower end of the outer tube, and the lower end of the sieve tube is connected with the plug-in seal;

and the lower end of the plug-in seal is connected with an outer pipe nipple, and the plug-in seal cuts off the bottom space between the inner pipe and the outer pipe. The plug seal 9 is conventional in the art.

Although fig. 1 is used for all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as the parts or structural features missing in the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components are only the best embodiments, and the embodiments with less components are the basic embodiments, but the basic objects of the invention can also be achieved, so all of them are within the protection scope of the invention.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.