CN110242260B - Application method of layered gas production device of double-layer pipe column - Google Patents
Application method of layered gas production device of double-layer pipe column Download PDFInfo
- Publication number
- CN110242260B CN110242260B CN201910414906.0A CN201910414906A CN110242260B CN 110242260 B CN110242260 B CN 110242260B CN 201910414906 A CN201910414906 A CN 201910414906A CN 110242260 B CN110242260 B CN 110242260B
- Authority
- CN
- China
- Prior art keywords
- production
- layer
- induced
- valve
- pipe column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a use method of a layered gas production device of a double-layer pipe column. The technical scheme is as follows: the top of the first-layer production lower pipe column is connected with the top of the second-layer production lower pipe column through a trap valve, and the middle part of the second-layer production lower pipe column is provided with a layering pipe column check valve; the upper part of the induced spraying valve is connected with an inner-layer suspension pipe column and a suspension pipe column, and the inner-layer suspension pipe column is positioned in an inner cavity of the suspension pipe column; the upper end of the inner layer hanging pipe column is connected with a production pipeline, and is provided with a production valve, the upper end of the hanging pipe column is fixed through a hanger connected above a well head, a cavity formed between the hanging pipe column and the inner layer hanging pipe column is a cavity for two-layer production, and is produced through a small four-way joint connected on the well head, and the two-layer production valve is arranged on the small four-way joint. The beneficial effects are that: the two layers of the gas well are separately produced by using the double-layer pipe column, the packer is used for segmenting, and the induced injection valve is used for induced injection, so that the induced injection channel and the production channel are independent in all directions and do not interfere with each other, and the layered gas production is realized.
Description
Technical Field
The invention relates to a natural gas well layered exploitation device and a method, in particular to a use method of a layered gas exploitation device with a double-layer pipe column.
Background
In the process of extracting oil and gas, a natural gas well occupies a high position, and the natural gas has large extraction difficulty and high danger coefficient due to high stratum energy and complex geological conditions, and among the problems, interlayer interference is an important and key problem. If there are two interbed, producing formations in a gas well
) And a production zone (
) If producing a formation (
) In case of gas and low formation energy, the gas may be "condensed" in the producing zone
) Producing water and gas, producing zone
) The productivity of (a) cannot be fully exerted, and even may not be exerted, and similarly, the production layer (b)
) When it is gas, producing a layer (
) The same is true for water or water vapor in the same layer, and the problem is more serious because the data provided by geological design is only theoretical data and is sometimes influenced by external driving force (such as water injection, gas injection, induced flow and the like in oil field exploitation).
Disclosure of Invention
The invention aims to provide a using method of a layered gas production device of a double-layer tubular column, aiming at the defects in the prior art, and the interference among production layers is realized and eliminated through layered induced flow and layered gas production.
The invention provides a using method of a layered gas production device of a double-layer tubular column, which adopts the technical scheme that: the method comprises the following steps:
(a) firstly, a layered gas production device is put into the underground, and the method comprises the following specific steps:
firstly, installing a wellhead of a construction well, connecting a large four-way joint (6) to the wellhead (3), opening a wellhead high-pressure valve (7), connecting a safety pipeline, and accessing a pump truck through the safety pipeline;
secondly, a layering packer (14) and a induced-flow packer (16) are put into the well, a first production zone and a second production zone are sealed and separated, then an internal self-sealing device (13) is arranged at the lower ends of a first production lower tubular column (12) and a second production lower tubular column (19), the upper end of the internal self-sealing device is connected with an induced-flow valve (17), then the internal self-sealing device is put into the well, so that the bottom of the first production lower tubular column (12) is positioned in the first production zone, a layering tubular column one-way valve (15) is arranged in the middle of the second production lower tubular column (19), and the layering tubular column one-way valve (15) is positioned in the second production zone between the layering packer (14) and the induced-flow packer (16);
thirdly, connecting a wellhead connecting short section (8) on a large four-way joint (6) of the wellhead, fixing a hanger (24) on the upper part of the inner wall of the wellhead connecting short section (8), then putting a hanging pipe column (18) into the well, connecting the bottom of the hanging pipe column (18) to an outer wall female buckle of the induced spraying valve (17), and fixedly connecting the top of the hanging pipe column (18) through the hanger (24);
fourthly, a small four-way joint (10) is connected to the top of the wellhead connecting nipple (8), then an inner layer hanging pipe column (20) is put into the well along the small four-way joint, the bottom of the inner layer hanging pipe column (20) is connected to an inner side female buckle of the induced spraying valve (17), and the top of the inner layer hanging pipe column (20) is fixedly connected through a sealing flange (11); connecting a layer of production pipeline (22) to the upper end of the inner cavity of the inner suspension pipe column (20) and fixedly connecting the production pipeline through a small flange (26); forming an inner gas production channel and an outer gas production channel;
(b) secondly, carrying out packer setting operation:
connecting a pump truck to a two-layer production valve (21) through a safety pipeline, opening the two-layer production valve (21), enabling high-pressure liquid to enter the upper part of a induced spray valve (17) through the two-layer production valve (21), opening a one-way valve through an outer layer induced spray air inlet hole (17.5) in the induced spray valve (17), enabling the high-pressure liquid to enter a one-way closed cavity formed by an inner self-sealing (13), a layering packer (14), a layering pipe column one-way valve (15), a two-layer production lower pipe column (19), an induced spray packer (16) and a one-layer production lower pipe column (12) through a production vent hole (17.3), and enabling the layering packer (14) and the induced spray packer (16) to expand through the high-pressure liquid to realize seat sealing;
(c) thirdly, carrying out layered gas production operation, wherein the process is as follows:
when gas production is carried out in a production layer: firstly, a layer of production valve (23) on a layer of production pipeline (22) is opened at a well mouth, then a nitrogen-making pump truck starts to work, the produced nitrogen gas reaches a induced flow packer (16) along a cavity between a well deep casing (2) and a suspension pipe column (18), and as the layer of production pipeline (22) is opened, a one-way valve at an inner layer induced flow air inlet (17.4) of the induced flow valve (17) is opened at the moment, so that a layer of gas production channel returning along an inner cavity of the inner layer suspension pipe column (20) is formed, thus, as fluid in the induced flow valve (17) flows, the negative pressure in a lower production pipe column (12) of one layer is increased, and further one production layer is driven to realize induced flow, after induced flow is finished, if gas is gas, the induced flow is normal self-flow, if the oil gas or the gas and water are simultaneously injected for production, and if the water layer or the water is water layer, the production valve (23) is closed, thereby closing the production of a production zone;
when gas production is carried out in a second production layer: firstly, opening a two-layer production valve (21) at a small four-way position at a well mouth, then starting a nitrogen-making pump truck to work, opening a one-way valve of an outer layer induced flow air inlet (17.5) of the induced flow valve (17) at the moment, enabling high-pressure nitrogen to be upwards sprayed out through the two-layer production valve (21) along an annular space between a hanging pipe column (18) and an inner layer hanging pipe column (20) because the two-layer production valve (21) is opened, so as to form a two-layer gas production channel, increasing negative pressure in a lower pipe column (19) of the two-layer production due to the flow of fluid in the induced flow valve (17), further driving the two-layer production layer to realize induced flow, normally automatically spraying if the gas is gas, and simultaneously spraying the oil gas or the gas water to produce the oil gas or the gas water, if the water layer or the water leaching layer is the water layer, the two-layer production valve (21) is closed, and then the production of the two-layer production layer is closed; finally realizing layered gas production.
Preferably, the induced spraying valve (17) comprises an induced spraying valve main body (17.1), an induced spraying valve inner tube (17.2), a production vent hole (17.3), an inner layer induced spraying air inlet hole (17.4) and an outer layer induced spraying air inlet hole (17.5), wherein the induced spraying valve inner tube (17.2) is arranged at the lower side of the induced spraying valve main body (17.1), a plurality of production vent holes (17.3) are formed between the induced spraying valve main body (17.1) and the induced spraying valve inner tube (17.2), a female buckle is arranged at the top of the induced spraying valve inner tube (17.2), and an inner layer production channel is formed by connecting the induced spraying valve inner tube with an inner layer suspension pipe column (20); a female buckle is arranged at the top of the main body (17.1) of the induced-flow valve and is connected with a suspension pipe column (18) to form an outer-layer production channel; the inner layer induced flow air inlet holes (17.4) and the outer layer induced flow air inlet holes (17.5) are radially arranged on the induced flow valve main body (17.1) and the inner tube (17.2) of the induced flow valve, the inner layer induced flow air inlet holes (17.4) are communicated with the inner tube and the outer tube through one-way valves, the outer layer induced flow air inlet holes (17.5) penetrate through the production vent holes (17.3), and the production vent holes (17.3) are communicated with the outer wall of the induced flow valve main body (17.1) through the one-way valves.
The invention has the beneficial effects that: (1) the method comprises the following steps of performing separate production on two layers of a gas well by using a double-layer pipe column, performing segmentation by using a packer, performing production control by using a spray inducing valve as a flow inlet valve for induced flow, and using the spray inducing valve, a two-layer production valve, a one-layer production pipeline and a pipe column between the spray inducing valve and the one-layer production valve as control bodies, so that separate layer induced flow and gas production can be realized; (2) the induced flow valve is provided with two groups of channels, namely the induced flow channel and the production channel are independent in each direction and do not interfere with each other, so the induced flow is safe and reliable; (3) because the channels of the production layers are mutually independent, the induced flow valve is provided with an inner layer induced flow air inlet and an outer layer induced flow air inlet, namely the induced flow of the first production layer and the second production layer is independent from the production, one layer passes through the inner layer induced flow air inlet, the second layer passes through the outer layer induced flow air inlet, and the mechanical structure is adopted for separation, so that the work is more reliable; (4) the whole pipe column is clear and clear in design and centralized in function, namely, the function is specialized and centralized, so that the installation is convenient; (5) the tool is simple to add and convenient to use, so that the economic benefit is better.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of the entrainment valve;
FIG. 3 is a schematic cross-sectional view A-A of the entrainment valve;
in the upper diagram: the production line comprises an artificial well bottom 1, a well depth casing 2, a well mouth 3, a flange bolt 4, a sealing steel ring 5, a large four-way 6, a well mouth high-pressure valve 7, a well mouth connecting short section 8, a hoop skin 9, a small four-way 10, a sealing flange 11, a first-layer production lower pipe column 12, an internal self-sealing 13, a layering packer 14, a layering pipe column one-way valve 15, a induced flow packer 16, an induced flow valve 17, a suspension pipe column 18, a second-layer production lower pipe column 19, an inner-layer suspension pipe column 20, a second-layer production valve 21, a first-layer production pipeline 22, a first-layer production valve 23, a hanger 24, a compensator 25 and;
the induced-flow valve comprises an induced-flow valve body 17.1, an induced-flow valve inner tube 17.2, a production vent hole 17.3, an inner layer induced-flow air inlet hole 17.4, an outer layer induced-flow air inlet hole 17.5, a one-way spring 17.6, a one-way ball 17.7 and a valve seat 17.8.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Embodiment 1, referring to fig. 1, the present invention provides a layered gas production device of a double-layer pipe column, which comprises a first-layer production lower pipe column 12, an internal self-seal 13, a layered packer 14, a layered pipe column check valve 15, a flow inducing packer 16, a flow inducing valve 17, a suspension pipe column 18, a second-layer production lower pipe column 19, an inner-layer suspension pipe column 20, a second-layer production valve 21, a first-layer production pipe 22, a first-layer production valve 23, a hanger 24, and a compensator 25, the top parts of the first-layer production lower pipe column 12 and the second-layer production lower pipe column 19 are connected through an induced spraying valve 17, the bottom parts are connected through an internal self-seal 13, a layering packer 14 and a induced-flow packer 16 are arranged between the outer wall of the second-layer production lower pipe column 19 and the well depth casing 2, a first production layer is arranged below the layering packer 14, and a second production layer is isolated between the layering packer 14 and the induced-flow packer 16; a layering pipe column one-way valve 15 is arranged in the middle of the second-layer production lower pipe column 19; the upper part of the induced spraying valve 17 is connected with an inner suspension pipe column 20 and a suspension pipe column 18, and the inner suspension pipe column 20 is positioned in the inner cavity of the suspension pipe column 18; the upper end of the inner layer suspension pipe column 20 is connected with a layer of production pipeline 22, a layer of production valve 23 is arranged on the layer of production pipeline 22, the upper end of the suspension pipe column 18 is fixed through a hanger 24 connected above a well mouth, a cavity formed between the suspension pipe column 18 and the inner layer suspension pipe column 20 is a cavity for two-layer production, the production is carried out through a small four-way joint 10 connected on the well mouth, and two layers of production valves 21 are arranged on the small four-way joint 10.
Referring to fig. 2 and 3, the induced-flow valve 17 of the present invention comprises an induced-flow valve main body 17.1, an induced-flow valve inner tube 17.2, a production vent 17.3, an inner layer induced-flow air inlet 17.4 and an outer layer induced-flow air inlet 17.5, wherein the induced-flow valve inner tube 17.2 is disposed at the lower side of the induced-flow valve main body 17.1, a plurality of production vents 17.3 are disposed between the induced-flow valve main body 17.1 and the induced-flow valve inner tube 17.2, a female buckle is disposed at the top of the induced-flow valve inner tube 17.2, and an inner layer production channel is formed by connecting the induced-flow valve main body with an inner layer; a female buckle is arranged at the top of the main body 17.1 of the induced draft valve and is connected with a suspension pipe column 18 to form an outer layer production channel; four inner layer induced flow air inlet holes 17.4 and four outer layer induced flow air inlet holes 17.5 are radially arranged on the induced flow valve main body 17.1 and the induced flow valve inner tube 17.2, the inner layer induced flow air inlet holes 17.4 are communicated with the inner tube and the outer tube through one-way valves, the outer layer induced flow air inlet holes 17.5 penetrate through the production vent holes 17.3, and the production vent holes 17.3 are communicated with the outer wall of the induced flow valve main body 17.1 through the one-way valves.
Referring to the attached figure 1, a large four-way 6 is connected above a wellhead 1, a wellhead high-pressure valve 7 is arranged on the outer side of the large four-way 6, and the large four-way is connected with a pump truck through a safety pipeline; the upper portion swing joint well head of big cross 6 connects nipple joint 8, and little cross 10 is connected to well head connection nipple joint 8's top, and the top of little cross 10 is equipped with sealing flange 11, hangs tubular column 18 fixed connection with hanging through inlayer suspension tubular column 20, is equipped with small flange 26 above sealing flange 11, through small flange 26 with one deck production pipeline 22 fixed connection.
Wherein, well head coupling nipple 8 is the undergauge nipple joint, and the lower part diameter is greater than the upper portion diameter to upper portion inner wall installation hanger 24 hangs tubular column 18 through hanger 24 connection.
The compensator 25 is connected in the inner suspension pipe column 20, so that the on-site construction and the assembly are convenient.
In addition, check valves are arranged in the inner layer induced flow air inlet 17.4 and the outer layer induced flow air inlet 17.5, each check valve comprises a check spring, a check ball and a valve seat, the check springs and the check balls are arranged in the valve seats, and the check balls are compressed on the valve seats through the check springs, wherein the inner layer induced flow air inlet 17.4 is arranged at a position where no vent 17.3 is produced, and a pore passage penetrates through the induced flow valve main body 17.1 and the inner tube 17.2 of the induced flow valve so as to enable the inside and the outside to be communicated; however, the outer layer induced spray air inlet hole 17.5 is arranged at the position with the production vent hole 17.3, the outer wall of the induced spray valve main body 17.1 is communicated with the production vent hole 17.3, and when the check valve is opened, the production vent hole 17.3 is communicated with the outer wall of the induced spray valve main body 17.1.
The construction method of the layered gas production device of the double-layer pipe column comprises the following steps:
a. firstly, a layered gas production device is put into a well, and the method comprises the following specific steps:
firstly, installing a wellhead of a construction well, connecting a large four-way valve 6 to a wellhead 3, opening a wellhead high-pressure valve 7, connecting a safety pipeline, and accessing a pump truck through the safety pipeline;
secondly, a layering packer 14 and a induced-flow packer 16 are put into the well, a first production zone and a second production zone are sealed and separated, then an internal self-seal 13 is arranged at the lower ends of a first production lower tubular column 12 and a second production lower tubular column 19, the upper end of the internal self-seal is connected with an induced-flow valve 17, and then the production zone is put into the well, so that the bottom of the first production lower tubular column 12 is positioned in the first production zone, a layering tubular column check valve 15 is arranged in the middle of the second production lower tubular column 19, and the layering tubular column check valve 15 is positioned in the second production zone between the layering packer 14 and the induced-flow packer 16;
thirdly, connecting a wellhead connecting short section 8 on a large four-way 6 of a wellhead, fixing a hanger 24 on the upper part of the inner wall of the wellhead connecting short section 8, and then putting the hanging pipe column 18 into the underground, so that the bottom of the hanging pipe column 18 is connected to an outer wall nut of the induced spraying valve 17, and the top of the hanging pipe column 18 is fixedly connected through the hanger 24;
fourthly, connecting a small four-way joint 10 at the top of the wellhead connecting short joint 8, then putting the inner suspension pipe column 20 into the well along the small four-way joint, connecting the bottom of the inner suspension pipe column 20 to an inner female buckle of the induced spraying valve 17, and connecting and fixing the top of the inner suspension pipe column 20 through a sealing flange 11; connecting a layer of production pipeline 22 to the upper end of the inner cavity of the inner suspension pipe column 20, and fixedly connecting the layer of production pipeline through a small flange 26; forming an inner gas production channel and an outer gas production channel;
b. secondly, performing packer setting operation:
connecting a pump truck to a two-layer production valve 21 through a safety pipeline, opening the two-layer production valve 21, enabling high-pressure liquid to enter the upper part of a induced-flow valve 17 through the two-layer production valve 21, opening a one-way valve of an outer layer induced-flow air inlet hole 17.5 in the induced-flow valve 17, enabling the high-pressure liquid to enter a one-way closed cavity formed by an inner self-sealing 13, a layering packer 14, a layering pipe column one-way valve 15, a two-layer production lower pipe column 19, an induced-flow packer 16 and a one-layer production lower pipe column 12 through a production vent hole 17.3, and enabling the layering packer 14 and the induced-flow packer 16 to expand through the high-pressure liquid to realize setting;
and c, carrying out layered gas production again, wherein the process is as follows:
when gas production is carried out in a production layer: firstly, opening a production valve 23 on a production pipeline 22 at a wellhead, then starting a nitrogen-making pump truck to work, making nitrogen gas along a cavity between a well deep casing 2 and a suspension pipe column 18 to a induced-flow packer 16, and opening the production pipeline 22, at the moment, opening a one-way valve at an inner layer induced-flow air inlet 17.4 of the induced-flow valve 17 to form a gas production channel returning along an inner cavity of an inner layer suspension pipe column 20, so that the negative pressure in a lower production pipe column 12 is increased due to the flow of fluid in the induced-flow valve 17, and then driving a production layer to realize induced-flow, after the induced-flow is finished, normally performing self-flow if the gas is gas, simultaneously spraying the gas and the gas, and closing the production valve 23 if the gas is a water layer or a water layer, and further closing the production of the production layer;
when gas production is carried out in a second production layer: firstly, opening a two-layer production valve 21 at a small four-way position at a well mouth, then starting a nitrogen-making pump truck to work, making the produced nitrogen gas reach a induced-flow packer 16 along a cavity between a well deep casing 2 and a suspension pipe column 18, wherein the two-layer production valve 21 is opened, at the moment, a one-way valve of an outer induced-flow air inlet 17.5 of the induced-flow valve 17 is opened, high-pressure nitrogen gas is upwards sprayed out through the two-layer production valve 21 along an annular space between the suspension pipe column 18 and an inner suspension pipe column 20 to form a two-layer gas production channel, so that the negative pressure in a lower pipe column 19 of the two-layer production is increased due to the flow of fluid in the induced-flow valve 17, the two-layer production layer is driven to realize induced-flow, after the induced-flow is finished, if the gas is normal self-flow, if the gas or gas water is simultaneously sprayed for production, and if the water is a water layer or water layer, further closing the production of the second production layer; finally realizing layered gas production.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (2)
1. A use method of a layered gas production device of a double-layer pipe column is characterized by comprising the following steps:
(a) firstly, a layered gas production device is put into the underground, and the method comprises the following specific steps:
firstly, installing a wellhead of a construction well, connecting a large four-way joint (6) to the wellhead (3), opening a wellhead high-pressure valve (7), connecting a safety pipeline, and accessing a pump truck through the safety pipeline;
secondly, a layering packer (14) and a induced-flow packer (16) are put into the well, a first production zone and a second production zone are sealed and separated, then an internal self-sealing device (13) is arranged at the lower ends of a first production lower tubular column (12) and a second production lower tubular column (19), the upper end of the internal self-sealing device is connected with an induced-flow valve (17), then the internal self-sealing device is put into the well, so that the bottom of the first production lower tubular column (12) is positioned in the first production zone, a layering tubular column one-way valve (15) is arranged in the middle of the second production lower tubular column (19), and the layering tubular column one-way valve (15) is positioned in the second production zone between the layering packer (14) and the induced-flow packer (16);
thirdly, connecting a wellhead connecting short section (8) on a large four-way joint (6) of the wellhead, fixing a hanger (24) on the upper part of the inner wall of the wellhead connecting short section (8), then putting a hanging pipe column (18) into the well, connecting the bottom of the hanging pipe column (18) to an outer wall female buckle of the induced spraying valve (17), and fixedly connecting the top of the hanging pipe column (18) through the hanger (24);
fourthly, a small four-way joint (10) is connected to the top of the wellhead connecting nipple (8), then an inner layer hanging pipe column (20) is put into the well along the small four-way joint, the bottom of the inner layer hanging pipe column (20) is connected to an inner side female buckle of the induced spraying valve (17), and the top of the inner layer hanging pipe column (20) is fixedly connected through a sealing flange (11); connecting a layer of production pipeline (22) to the upper end of the inner cavity of the inner suspension pipe column (20) and fixedly connecting the production pipeline through a small flange (26); forming an inner gas production channel and an outer gas production channel;
(b) secondly, carrying out packer setting operation:
connecting a pump truck to a two-layer production valve (21) through a safety pipeline, opening the two-layer production valve (21), enabling high-pressure liquid to enter the upper part of a induced spray valve (17) through the two-layer production valve (21), opening a one-way valve through an outer layer induced spray air inlet hole (17.5) in the induced spray valve (17), enabling the high-pressure liquid to enter a one-way closed cavity formed by an inner self-sealing (13), a layering packer (14), a layering pipe column one-way valve (15), a two-layer production lower pipe column (19), an induced spray packer (16) and a one-layer production lower pipe column (12) through a production vent hole (17.3), and enabling the layering packer (14) and the induced spray packer (16) to expand through the high-pressure liquid to realize seat sealing;
(c) thirdly, carrying out layered gas production operation, wherein the process is as follows:
when gas production is carried out in a production layer: firstly, a layer of production valve (23) on a layer of production pipeline (22) is opened at a well mouth, then a pump truck starts to work, produced nitrogen gas reaches a induced flow packer (16) along a cavity between a well deep casing (2) and a suspension pipe column (18), and because the layer of production pipeline (22) is opened, at the moment, a one-way valve at an inner layer induced flow air inlet (17.4) of the induced flow valve (17) is opened, so that a layer of gas production channel returning along an inner cavity of the inner layer suspension pipe column (20) is formed, thus, because fluid in the induced flow valve (17) flows, negative pressure in a lower production pipe column (12) of the layer is increased, and further the production layer is driven to realize induced flow, after the induced flow is finished, if gas is normal self-flow, if the gas is gas, the gas and water are simultaneously sprayed, if the water layer of production valve (23) is closed, thereby closing the production of a production zone;
when gas production is carried out in a second production layer: firstly, opening a two-layer production valve (21) at a small four-way position at a well mouth, then, starting a pump truck to work, opening a one-way valve of an outer layer induced flow air inlet hole (17.5) of the induced flow valve (17) at the moment, and spraying nitrogen upwards through the two-layer production valve (21) along an annular space between a suspension pipe column (18) and an inner layer suspension pipe column (20) to form a two-layer gas production channel as the two-layer production valve (21) is opened, so that negative pressure in a lower pipe column (19) of the two-layer production is increased due to fluid flow in the induced flow valve (17), the two-layer production layer is driven to realize induced flow, if the gas is gas, the gas can be normally self-sprayed, if the gas is oil gas or gas and water are simultaneously sprayed for production, if the water layer or the water leaching layer is the water layer, the two-layer production valve (21) is closed, and then the production of the two-layer production layer is closed; finally realizing layered gas production.
2. The use method of the layered gas production device of the double-layer pipe column according to claim 1, which is characterized in that: the induced spraying valve (17) comprises an induced spraying valve main body (17.1), an induced spraying valve inner pipe (17.2), a production vent hole (17.3), an inner layer induced spraying air inlet hole (17.4) and an outer layer induced spraying air inlet hole (17.5), wherein the lower side of the induced spraying valve main body (17.1) is provided with the induced spraying valve inner pipe (17.2), a plurality of production vent holes (17.3) are formed between the induced spraying valve main body (17.1) and the induced spraying valve inner pipe (17.2), the top of the induced spraying valve inner pipe (17.2) is provided with a female buckle, and an inner layer production channel is formed by connecting the induced spraying valve inner pipe with an inner layer suspension pipe column (20); a female buckle is arranged at the top of the main body (17.1) of the induced-flow valve and is connected with a suspension pipe column (18) to form an outer-layer production channel; the inner layer induced flow air inlet holes (17.4) and the outer layer induced flow air inlet holes (17.5) are radially arranged on the induced flow valve main body (17.1) and the inner tube (17.2) of the induced flow valve, the inner layer induced flow air inlet holes (17.4) are communicated with the inner tube and the outer tube through one-way valves, the outer layer induced flow air inlet holes (17.5) penetrate through the production vent holes (17.3), and the production vent holes (17.3) are communicated with the outer wall of the induced flow valve main body (17.1) through the one-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414906.0A CN110242260B (en) | 2019-05-17 | 2019-05-17 | Application method of layered gas production device of double-layer pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414906.0A CN110242260B (en) | 2019-05-17 | 2019-05-17 | Application method of layered gas production device of double-layer pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242260A CN110242260A (en) | 2019-09-17 |
| CN110242260B true CN110242260B (en) | 2021-04-20 |
Family
ID=67884070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910414906.0A Active CN110242260B (en) | 2019-05-17 | 2019-05-17 | Application method of layered gas production device of double-layer pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110242260B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734370B (en) * | 2020-07-17 | 2022-06-14 | 山东垚奎石油技术服务有限公司 | Application method of petroleum layered oil production device |
| CN111734368B (en) * | 2020-07-17 | 2022-10-28 | 西安荣达石油工程有限公司 | Layered oil production method for petroleum |
| CN111734369B (en) * | 2020-07-17 | 2022-10-25 | 牡丹江市井田石油钻采配件有限公司 | Petroleum layering oil production device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201460826U (en) * | 2009-08-11 | 2010-05-12 | 濮阳市东昊机械电子有限公司 | Multi-layered production separate-pumping process pipe column |
| CN101769129A (en) * | 2009-12-31 | 2010-07-07 | 刘玉文 | Integral layering gas recovery technology tubular column and application method thereof |
| CN202370489U (en) * | 2011-10-17 | 2012-08-08 | 中国石油化工股份有限公司 | Parallel double-pipe gas-lift production process pipe column |
| CN103573230A (en) * | 2012-07-24 | 2014-02-12 | 思达斯易能源技术(集团)有限公司 | Selective mining process and equipment thereof |
| CN204371254U (en) * | 2014-12-10 | 2015-06-03 | 中国石油天然气股份有限公司 | Gas-lift working barrel |
| CN204754881U (en) * | 2015-06-12 | 2015-11-11 | 中国海洋石油总公司 | Double -barrelled gas well flow string parallels |
| CN205225215U (en) * | 2015-11-25 | 2016-05-11 | 中国石油天然气股份有限公司 | A mining devices for two sets of oil reservoir slicing mining |
| CN206158696U (en) * | 2016-10-21 | 2017-05-10 | 中国石油天然气股份有限公司 | Layered oil exploitation , Ka shui integration tubular column |
| CN107420075A (en) * | 2017-06-26 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | Upper strata low pressure negative pressure divides device for picking |
| CN207568570U (en) * | 2017-01-03 | 2018-07-03 | 中国石油天然气股份有限公司 | Water drainage gas production device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8418768B2 (en) * | 2009-12-09 | 2013-04-16 | Ptt Exploration And Production Public Company Ltd. | Bypass gaslift system, apparatus, and method for producing a multiple zones well |
-
2019
- 2019-05-17 CN CN201910414906.0A patent/CN110242260B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201460826U (en) * | 2009-08-11 | 2010-05-12 | 濮阳市东昊机械电子有限公司 | Multi-layered production separate-pumping process pipe column |
| CN101769129A (en) * | 2009-12-31 | 2010-07-07 | 刘玉文 | Integral layering gas recovery technology tubular column and application method thereof |
| CN202370489U (en) * | 2011-10-17 | 2012-08-08 | 中国石油化工股份有限公司 | Parallel double-pipe gas-lift production process pipe column |
| CN103573230A (en) * | 2012-07-24 | 2014-02-12 | 思达斯易能源技术(集团)有限公司 | Selective mining process and equipment thereof |
| CN204371254U (en) * | 2014-12-10 | 2015-06-03 | 中国石油天然气股份有限公司 | Gas-lift working barrel |
| CN204754881U (en) * | 2015-06-12 | 2015-11-11 | 中国海洋石油总公司 | Double -barrelled gas well flow string parallels |
| CN205225215U (en) * | 2015-11-25 | 2016-05-11 | 中国石油天然气股份有限公司 | A mining devices for two sets of oil reservoir slicing mining |
| CN206158696U (en) * | 2016-10-21 | 2017-05-10 | 中国石油天然气股份有限公司 | Layered oil exploitation , Ka shui integration tubular column |
| CN207568570U (en) * | 2017-01-03 | 2018-07-03 | 中国石油天然气股份有限公司 | Water drainage gas production device |
| CN107420075A (en) * | 2017-06-26 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | Upper strata low pressure negative pressure divides device for picking |
Non-Patent Citations (1)
| Title |
|---|
| 一套井网两套油层双管采油工艺可行性分析;朱洪征，牛彩云，李大建，赵晓伟;《榆林学院学报》;20120315;第22卷(第2期);第1-4页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110242260A (en) | 2019-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110242260B (en) | Application method of layered gas production device of double-layer pipe column | |
| CN110107230B (en) | Layered gas production device with double-layer pipe column | |
| CN106837276B (en) | A kind of jet pump steam note adopts integrated extracting device of oil | |
| CN104963652A (en) | Self-sealing compressed packer | |
| US20110132593A1 (en) | System, apparatus, and method for producing a multiple zones well | |
| CN109372474B (en) | A kind of coal bed gas and sandstone gas are the same as well flow string and recovery method | |
| CN106460477A (en) | Downhole stimulation system | |
| CN206111126U (en) | Close inserting of independent liquid accuse sliding sleeve formula | |
| CN209483317U (en) | Layering injection selective sand control flow string | |
| CN107916910A (en) | Independent hydraulic control packer pressure valve | |
| CN202745847U (en) | Controllable hydraulic ejector | |
| US11655694B2 (en) | Tubing and annular gas lift | |
| CN111577204A (en) | Underground cascade sliding sleeve system | |
| CN108071365A (en) | A kind of coal bed gas gas production, draining and water injection integral pipe column | |
| CN110761748A (en) | Ball-throwing type pump-free exploitation device for oil field | |
| CN205778779U (en) | The eccentric injection mandrel of pressure opened by a kind of band | |
| CN107420075A (en) | Upper strata low pressure negative pressure divides device for picking | |
| CN212272153U (en) | Separate-layer fracturing string | |
| CN107743540A (en) | For unloading the downhole system of liquid | |
| CN201486542U (en) | Detachable layered fracturing technology pipe string | |
| CN203547658U (en) | Isolating valve | |
| CN103334731B (en) | The multistage fracturing sliding sleeve that a kind of anti-midway is opened | |
| CN112177567B (en) | Door-closable fracturing sliding sleeve and using method thereof | |
| CN205078216U (en) | Water injection packer | |
| CN206477827U (en) | A kind of laminated oil extraction structure adopted of heavy wool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210322 Address after: 226600 no.61-8 Jianghai West Road, Hai'an hi tech Zone (formerly Hai'an town), Hai'an City, Nantong City, Jiangsu Province Applicant after: Nantong Xinhuacheng scientific research instrument Co.,Ltd. Address before: 257000 No. 125 Ji'nan Road, Dongying District, Dongying, Shandong. Applicant before: Zhang Qiang |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |