CN112012701B - Gas lift tool and method of use - Google Patents
Gas lift tool and method of use Download PDFInfo
- Publication number
- CN112012701B CN112012701B CN201910452807.1A CN201910452807A CN112012701B CN 112012701 B CN112012701 B CN 112012701B CN 201910452807 A CN201910452807 A CN 201910452807A CN 112012701 B CN112012701 B CN 112012701B
- Authority
- CN
- China
- Prior art keywords
- gas lift
- cylinder
- elastic block
- lifting sleeve
- telescopic elastic
- 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
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 39
- 239000012530 fluid Substances 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/122—Gas lift
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
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 discloses a gas lift tool and a using method thereof, and belongs to the technical field of oil and gas field exploitation. This gas lift instrument includes: a mandrel and a plug; the working cylinder comprises a first cylinder body and a gas lift hole, the gas lift hole is arranged on the first cylinder body, and a groove is formed in the inner wall of the first cylinder body; the blanking plug comprises a second cylinder body, a sleeve, a lifting sleeve, a wire spring and a telescopic elastic block, wherein the lifting sleeve is sleeved on the outer side of the second cylinder body, the sleeve is sleeved on the outer side of the lifting sleeve, and the wire spring is connected with the lifting sleeve and the telescopic elastic block; the surface of the second cylinder body opposite to the lifting sleeve, the wire spring and the telescopic elastic block forms a conical surface; when the second cylinder body blocks the gas lift hole, the lifting sleeve moves towards the direction close to the telescopic elastic block, so that the telescopic elastic block is ejected and clamped in the groove; or the lifting sleeve moves towards the direction far away from the telescopic elastic block, so that the telescopic module is separated from the groove. The gas lift tool provided by the invention does not need to be provided with a gas lift valve, is simple to operate, and saves the operation time and the operation cost.
Description
Technical Field
The invention relates to the technical field of oil and gas field exploitation, in particular to a gas lift tool and a using method thereof.
Background
The gas lift process is a type of oil production method in which when the energy supplied from the stratum is insufficient to lift oil and gas from the bottom of a well to the surface, gas is artificially injected into the well to mix the injected gas with the oil and gas, and the oil and gas in the well are lifted to the surface by expansion of the gas. The gas lift process has the advantages of simple process, easy operation, no influence of well structure and well fluid medium, low cost, fast exploitation, etc., and is widely applied to the exploitation of oil and gas fields.
Current gas lift instrument includes the working barrel, is provided with the gas lift hole on the working barrel, and installs the gas lift valve on the gas lift hole. When the pressure of the gas lift valve reaches the preset pressure, the gas lift valve is opened, the gas lift hole is opened, and gas can be injected through the gas lift hole at the moment. And when the pressure of the gas lift valve does not reach the preset pressure, the gas lift valve is closed, and the gas lift hole is also closed.
Sometimes, the environment inside the well is complex and may require switching gas lift ports at different pressures. However, since the preset pressure of the gas lift valve is fixed, if the preset pressure is adjusted, the gas lift valve needs to be lifted out of the ground, so that the operation is complex, the operation period is long, and the operation cost is high. And when the gas lift valve is lifted out of the ground, well killing fluid needs to be injected for well killing, so that the stratum is easily damaged.
Disclosure of Invention
The embodiment of the invention provides a gas lifting tool and a using method thereof, which can solve the problems in the related art. The technical scheme provided by the embodiment of the invention is as follows:
according to a first aspect provided by an embodiment of the present invention, there is provided a gas lift tool comprising: a mandrel and a plug;
the working cylinder comprises a first cylinder body and a gas lift hole, the gas lift hole is formed in the first cylinder body, and a groove is formed in the inner wall of the first cylinder body;
the blanking plug comprises a second cylinder body, a sleeve, a lifting sleeve, a wire spring and a telescopic elastic block, wherein the lifting sleeve is sleeved on the outer side of the second cylinder body, and the sleeve is sleeved on the outer side of the lifting sleeve;
the lifting sleeve is connected with the wire spring, and the wire spring is connected with the telescopic elastic block;
the surfaces of the second cylinder body opposite to the lifting sleeve, the wire spring and the telescopic elastic block form a conical surface;
a fluid channel is arranged in the center of the blanking plug and is used for oil and gas to flow through;
the blanking plug is positioned in the working barrel, when the second barrel body blocks the gas lift hole, the lifting sleeve moves to a first direction under the action of external force, the first direction is a direction close to the telescopic elastic block, the telescopic elastic block is pushed to move, and the telescopic elastic block is ejected and clamped in the groove; or the lifting sleeve moves towards a second direction, the second direction is the direction far away from the telescopic elastic block, and the wire spring drives the telescopic elastic block to move and separate from the groove.
In a possible realization, the inner diameter of the mandrel is greater than the outer diameter of the obturator and the difference between the inner diameter of the mandrel and the outer diameter of the obturator is comprised between 0.2 mm and 1.4 mm.
In another possible realization, the difference between the inner diameter of the mandrel and the outer diameter of the obturator is comprised between 0.5 mm and 1.1 mm.
In another possible implementation manner, a first boss is arranged on the inner surface of the first cylinder, and a second boss is arranged on the outer surface of the blanking plug; the blanking plug further comprises a shear pin connecting a running tool and the second barrel;
feeding the blanking plug into the working barrel by using the feeding tool to enable the second barrel body to block the gas lifting hole, wherein the first boss is contacted with the second boss;
the feeding tool is subjected to external force to move relative to the second cylinder, and the shearing pin is sheared under stress.
In another possible implementation manner, the blanking plug further includes an expansion core, the expansion core is sleeved on the second cylinder, the lifting sleeve is sleeved on the outer side of the expansion core, the wire spring and the telescopic elastic block are located on the outer side of the expansion core, and the expansion core is conical.
In another possible implementation manner, a first sealing groove and a second sealing groove are arranged on the second cylinder, and sealing rings are arranged in the first sealing groove and the second sealing groove;
when the second cylinder body is used for blocking the gas lift hole, the gas lift hole is positioned between the first sealing groove and the second sealing groove.
In another possible implementation manner, the second cylinder comprises a mandrel and a middle valve body, and the mandrel is connected with the middle valve body;
the lifting sleeve is sleeved on the outer side of the mandrel, the wire spring and the telescopic elastic block are positioned on the outer side of the mandrel, and the mandrel is conical;
the blanking plug is positioned in the working barrel, and the middle valve body blocks the gas lift hole.
According to a second aspect provided by an embodiment of the present invention, there is provided a method for using a gas lift tool, applied to the gas lift tool of the first aspect, the method including:
placing the blanking plug inside the working barrel, and blocking the gas lift hole by the second barrel; moving the lifting sleeve to a first direction, wherein the first direction is a direction close to the telescopic elastic block, pushing the telescopic elastic block to move, ejecting the telescopic elastic block, and clamping the telescopic elastic block in the groove; or,
moving the lifting sleeve to a second direction, wherein the second direction is a direction far away from the telescopic elastic block, and the wire spring drives the telescopic elastic block to move and separate from the groove; and continuing to move the lifting sleeve to the second direction until the second cylinder moves to expose the gas lift hole.
In a possible implementation manner, a first boss is arranged on the inner surface of the first cylinder, and a second boss is arranged on the outer surface of the blanking plug; the blanking plug further comprises a shear pin connecting a running tool and the second barrel;
will the blanking plug place in inside the working barrel, will the gas lift hole is plugged up to the second barrel, include:
placing the blanking plug inside the working barrel by using the feeding tool, blocking the gas lifting hole by using the second barrel body, and enabling the first boss to be in contact with the second boss;
the feeding tool and the second cylinder body generate relative movement under the action of external force, and the shearing pin is sheared under the stress.
In another possible implementation, the second cylinder includes a mandrel and a middle valve body, and the mandrel and the middle valve body are connected;
the place the blanking plug in inside the working barrel, will the second barrel blocks up the gas lift hole includes:
and placing the blanking plug in the working barrel, and blocking the gas lift hole by the middle valve body.
In another possible implementation, the continuing to move the lifting sleeve in the second direction until the second cylinder moves to expose the gas lift hole includes: and continuing to move the lifting sleeve towards the second direction until the middle valve body moves to expose the gas lift hole.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a gas lift tool and a using method thereof, wherein the gas lift tool comprises: working barrel and blanking plug, the working barrel includes first barrel and gas lift hole, the gas lift hole sets up on first barrel, the inner wall of first barrel is provided with the recess, the blanking plug includes the second barrel, the sleeve, promote the sleeve, wire spring and flexible bullet piece, promote the outside that the second barrel was located to the sleeve cover, the sleeve cover is located and is promoted telescopic outside, it is connected with the wire spring to promote the sleeve, the wire spring is connected with flexible bullet piece, on the second barrel with promote the sleeve, the surface that wire spring and flexible bullet piece are relative constitutes the toper surface. The blanking plug is positioned in the working barrel, when the second barrel body plugs the gas lifting hole, the lifting sleeve moves towards the first direction close to the telescopic elastic block to push the telescopic elastic block to move, and the telescopic elastic block is ejected out and clamped in the groove; or the lifting sleeve moves towards the second direction far away from the telescopic elastic block, and the wire spring drives the telescopic elastic block to move and separate from the groove. The gas lift tool provided by the invention can open or close the gas lift hole on the working barrel through the blanking plug without arranging a gas lift valve or lifting the gas lift valve out of the ground to adjust the pressure of the gas lift valve, so that the operation is simplified, the operation period is shortened, the operation cost is saved, well killing liquid is not required to be injected for well killing, and the damage to the stratum is avoided.
The embodiment of the invention provides a gas lift tool and a using method thereof, wherein the gas lift tool is provided with a shearing pin, a first boss is arranged on the inner surface of a first cylinder, and a second boss is arranged on the outer surface of a blanking plug; shear pin connection feeding tool and second barrel are placed the blanking plug in the inside in-process of working barrel through feeding tool and can be kept feeding tool and blanking plug static relatively, and when the blanking plug closed the gas lift hole, first boss and second boss contact avoided the blanking plug to remove and lead to the gas lift hole to open, had guaranteed that the blanking plug closed the reliability in gas lift hole. When utilizing the running tool to produce the effort to promoting the sleeve, promote the sleeve and receive the exogenic action and produce relative motion and to first direction removal with the second barrel, promote flexible bullet piece and remove, will pop out and block in the recess, accomplish the fixed of blanking plug. The gas-lift tool provided by the invention can connect the feeding tool with the blanking plug through the shearing pin, so that the blanking plug can open or close the gas-lift hole on the working barrel, and the feeding operation of the blanking plug is facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a gas lift tool according to an exemplary embodiment;
FIG. 2 is a schematic diagram of a mandrel configuration according to an exemplary embodiment;
FIG. 3 is a schematic diagram illustrating the construction of an occluder in accordance with an exemplary embodiment;
FIG. 4 is a flow chart illustrating a method of using a gas lift tool according to an exemplary embodiment;
FIG. 5 is a flow chart illustrating a method of using another gas lift tool according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram illustrating the construction of a gas lift tool according to an exemplary embodiment.
As shown in fig. 1, the gas lift tool includes: a mandrel 1 and a plug 2. The working barrel 1 comprises a first barrel body 101 and a gas lift hole 102, the gas lift hole 102 is arranged on the first barrel body 101, and a groove 103 is formed in the inner wall of the first barrel body 101.
As shown in fig. 1, the blanking plug 2 includes a second cylinder 201, a sleeve 202, a lifting sleeve 203, a wire spring 204 and a telescopic spring block 205, wherein the lifting sleeve 203 is sleeved outside the second cylinder 201, the sleeve 202 is sleeved outside the lifting sleeve 203, the lifting sleeve 203 is connected with the wire spring 204, and the wire spring 204 is connected with the telescopic spring block 205.
Wherein, the first ends of the sleeve 202 and the telescopic elastic block 205 close to each other are connected with the second cylinder 201 through threads; the second end of the sleeve 202 opposite the first end is fixed to the second cylinder 201 by a set screw so that the sleeve 202 remains relatively stationary with the second cylinder 201 during movement of the obturator.
The second cylinder 201 has a smaller outer diameter at one end close to the lift sleeve 203 and a larger outer diameter at the other end close to the retractable spring piece 205, and the surface of the second cylinder 201 facing the lift sleeve 203, the wire spring 204, and the retractable spring piece 205 forms a tapered surface.
In the embodiment of the invention, the gas lift hole 102 on the working barrel 1 can be opened or closed by controlling the blanking plug 2.
In the first case: the process of closing the gas lift hole 102 may include the steps of:
1. the stopper 2 is placed inside the mandrel 1, and the second cylinder 201 blocks the gas lift hole 102.
For example, both ends of the mandrel 1 are connected to an oil pipe, and the mandrel is lowered into an oil well, and the plug 2 is lowered into the oil well by a running tool, placed inside the mandrel 1, and the second cylinder 201 is plugged in the gas lift hole 102.
Optionally, the working barrel 1 comprises an upper joint and a lower joint, the upper joint is provided with an internal thread, and the lower joint is provided with an external thread; one end of the first oil pipe is provided with an external thread matched with the internal thread of the upper joint, one end of the second oil pipe is provided with an internal thread matched with the external thread of the lower joint, and then the upper joint is in threaded connection with the first oil pipe, and the lower joint is in threaded connection with the second oil pipe.
Wherein the running tool may comprise a wire rope with one end connected to the jar and a jar connected to the lifting sleeve 203. The wire rope can send the blanking plug 2 into the working barrel 1, and the jar can generate a jar effect on the lifting sleeve 203 to control the relative movement of the lifting sleeve 203 and the second barrel 201.
2. Move lifting sleeve 203 to the first direction, the direction that first direction is close to flexible bullet piece 205 pushes flexible bullet piece 205 and removes, pops out flexible bullet piece 205, the card is in recess 103.
A direction parallel to the central axis of the lifting sleeve 203 and directed toward the telescopic elastic block 205 by the lifting sleeve 203 is determined as a first direction. When the lifting sleeve 203 is moved in the first direction by an external force, the retractable elastic block 205 is pushed to move in the first direction.
Since the surfaces of the second cylinder 201 opposite to the lifting sleeve 203, the wire spring 204 and the elastic resilient piece 205 constitute tapered surfaces, the outer diameter of the tapered surfaces gradually increases during the pushing process, so that the elastic resilient piece 205 not only moves in the first direction, but also moves outward in the radial direction of the second cylinder 201 and is caught in the groove 103, thereby fixing the stopper 2 inside the working cylinder 1 and maintaining the gas lift hole 102 in a closed state.
Optionally, the sleeve 202 is further provided with a long hole, and the telescopic elastic block 205 is located in the long hole and is in surface contact with the second cylinder 201; when the lifting sleeve 203 pushes the telescopic elastic block 205 to move, the telescopic elastic block 205 moves in the long strip hole, and the long strip hole has a guiding effect on the telescopic elastic block 205, so that the clamping stagnation phenomenon of the telescopic elastic block 205 in the moving process is avoided.
In the second case: the process of opening the gas lift hole 102 may include the steps of:
1. the lifting sleeve 203 is moved in a second direction, which is a direction away from the elastic extension piece 205, and the elastic extension piece 205 is driven by the wire spring 204 to move and separate from the groove 103.
For example, the lifting sleeve 203 is moved in the second direction using a lifting tool. Wherein, lifting tool includes wire rope and jar, and the jar is connected to wire rope's one end, and the jar is connected lifting sleeve 203. The wire rope can pull the blanking plug 2 to move in the working barrel 1, and the jar can generate a jar effect on the lifting sleeve 203 to control the relative movement of the lifting sleeve 203 and the second barrel 201.
2. The lifting sleeve 203 continues to be moved in the second direction until the second cylinder 201 is moved to expose the gas lift hole 102, thereby opening the gas lift hole 102.
The direction parallel to the central axis of the lifting sleeve 203 and directed toward the lifting sleeve 203 by the telescopic spring blocks 205 is determined as the second direction. When the sleeve 202 is moved in the second direction by an external force, the wire spring 204 is driven to move in the second direction, and the wire spring 204 drives the elastic block 205 to move in the second direction.
Since the surface of the second cylinder 201 opposite to the lift sleeve 203, the wire spring 204 and the elastic piece 205 is formed as a tapered surface, the outer diameter of the tapered surface is gradually reduced during the movement, and thus the elastic piece 205 is caused to move not only in the second direction but also in the radial direction of the second cylinder 201, inwardly, thereby being separated from the groove 103. Thereafter, the lift sleeve 203 is continuously moved in the second direction, the plug 2 is moved inside the cylinder 1, and the second cylinder 201 exposes the gas lift hole 102.
In addition, a fluid channel 206 is arranged in the center of the blanking plug 2, fluid channels are respectively arranged in the centers of the lifting sleeve 203 and the second cylinder 201, and the fluid channel of the lifting sleeve 203 is communicated with the fluid channel of the second cylinder 201 to jointly form the fluid channel 206 of the blanking plug 2. When the blanking plug 2 is located inside the working barrel 1, the fluid channel 206 at the center of the blanking plug 2 is used for oil gas circulation, and when the blanking plug 2 is located inside the working barrel 1 and closes the gas lift hole, the flow of the oil gas to the ground direction cannot be influenced.
Optionally, the sleeve 202 is provided with a long hole in which the first end of the lifting sleeve 203, close to the telescopic block 205, slides. The lifting sleeve 203 is moved towards the second direction, when the lifting sleeve 203 is moved to the first end to contact with the sleeve 202, and the lifting sleeve 203 is continuously moved towards the second direction, the sleeve 202 is driven to move towards the second direction, and the sleeve 202 and the second cylinder 201 are relatively static, so that the second cylinder 201 can be driven to move towards the second direction.
In the embodiment of the invention, in order to realize the movement of the plug 2 in the working barrel 1, the inner diameter of the working barrel 1 is larger than the outer diameter of the plug 2.
Alternatively, in order to ensure that the plug 2 can also block the gas lift hole 102 while the plug 2 moves within the mandrel 1, the difference between the inner diameter of the mandrel 1 and the outer diameter of the plug 2 is between 0.2 mm and 1.4 mm. For example, the difference between the inner diameter of the mandrel 1 and the outer diameter of the obturator 2 is comprised between 0.5 mm and 1.1 mm.
The embodiment of the invention provides a gas lifting tool, which comprises: working barrel and blanking plug, the working barrel includes first barrel and gas lift hole, the gas lift hole sets up on first barrel, the inner wall of first barrel is provided with the recess, the blanking plug includes the second barrel, the sleeve, promote the sleeve, wire spring and flexible elastic block, promote the outside that the second barrel was located to the sleeve cover, the telescopic outside is located to the sleeve cover, it is connected with the wire spring to promote the sleeve, the wire spring is connected with flexible elastic block, on the second barrel with promote the sleeve, the surface constitution toper surface that wire spring and flexible elastic block are relative. The blanking plug is positioned in the working barrel, when the second barrel body plugs the gas lifting hole, the lifting sleeve moves towards the first direction close to the telescopic elastic block to push the telescopic elastic block to move, and the telescopic elastic block is ejected out and clamped in the groove; or the lifting sleeve moves towards the second direction far away from the telescopic elastic block, and the wire spring drives the telescopic elastic block to move and separate from the groove. The gas lift tool provided by the invention can open or close the gas lift hole on the working barrel through the blanking plug without arranging a gas lift valve or lifting the gas lift valve out of the ground to adjust the pressure of the gas lift valve, so that the operation is simplified, the operation period is shortened, the operation cost is saved, well killing liquid is not required to be injected for well killing, and the damage to the stratum is avoided.
In a possible implementation, as shown in fig. 2, the first cylinder 101 is provided with a first boss 104 on the inner surface, and as shown in fig. 3, the obturator 2 is provided with a second boss 207 on the outer surface; the plug 2 also includes a shear pin 208.
Accordingly, the gas lift hole 102 of the mandrel 1 can be closed by controlling the shear pin 208. The process of closing the gas lift hole 102 may include the steps of:
1. the shear pin 208 connects the running tool and the second cylinder 201, and the plug 2 is placed inside the working cylinder 1 by the running tool, so that the second cylinder 201 blocks the gas lift hole 102, and the first boss 104 and the second boss 207 are in contact.
Because the shear pin 208 connects the running tool to the second barrel 201, the running tool can be held stationary relative to the second barrel 201, i.e., the running tool is held stationary relative to the plug 2, during placement of the plug 2.
For example, the center of the obturator 2 is provided with a fluid passage 206, and a running tool is passed through the fluid passage 206 into the interior of the second cylinder 201, and the running tool is connected to the second cylinder 201 by a shear pin 208 to keep the running tool stationary relative to the second cylinder 201.
The plug 2 is placed from the ground into the mandrel 1 by the running tool so that the plug 2 plugs the gas lift hole 102 in the mandrel 1.
Because be provided with first boss 104 on the internal surface of first barrel 101, be provided with second boss 207 on the surface of blanking plug 2, in the in-process of placing blanking plug 2 in to the working barrel 1 by subaerial through the running tool, when gas lift hole 102 is blockked up to second barrel 201, first boss 104 and the contact of second boss 207 to guarantee blanking plug 2 and block up gas lift hole 102, avoid blanking plug 2 lapse to lead to gas lift hole 102 to open.
2. The running tool is forced to move relative to the second cylinder 201, and the shear pin 208 is sheared off. The lifting sleeve 203 is acted by a feeding tool, and the lifting sleeve 203 can push the telescopic elastic block 205 to move towards the first direction, so that the telescopic elastic block 205 is driven to pop out and be clamped in the groove 103, and the fixing of the blanking plug 2 is completed.
Wherein, the blanking plug 2 is placed in the working barrel through the feeding tool, the second barrel 201 blocks the gas lift hole 102, the first boss 104 contacts with the second boss 207, when the position of the blanking plug 2 is shown to be placed, the feeding tool and the second barrel 201 generate relative motion through the action of the jar, and the shear pin 208 is sheared by force, so that the feeding tool and the blanking plug 2 can generate relative motion. When the shear pin 208 is forced to shear, the running tool moves relative to the plug 2, creating a force on the lifting sleeve 203 by the jar, thereby moving the lifting sleeve 203.
The embodiment of the invention is provided with a shearing pin, wherein a first boss is arranged on the inner surface of a first cylinder body, and a second boss is arranged on the outer surface of a blanking plug; shear pin connection feeding tool and second barrel are placed the blanking plug in the inside in-process of working barrel through feeding tool and can be kept feeding tool and blanking plug static relatively, and when the blanking plug closed the gas lift hole, first boss and second boss contact avoided the blanking plug to remove and lead to the gas lift hole to open, had guaranteed that the blanking plug closed the reliability in gas lift hole. When utilizing the running tool to produce the effort to promoting the sleeve, promote the sleeve and receive the exogenic action and produce relative motion and to first direction removal with the second barrel, promote flexible bullet piece and remove, will pop out and block in the recess, accomplish the fixed of blanking plug. The gas-lift tool provided by the invention can connect the feeding tool with the blanking plug through the shearing pin, so that the blanking plug can open or close the gas-lift hole on the working barrel, and the feeding operation of the blanking plug is facilitated.
In another possible implementation manner, as shown in fig. 3, the blanking plug 2 further includes an expansion core 209, the expansion core 209 is sleeved on the second barrel 201, the lifting sleeve 203 is sleeved outside the expansion core 209, and the wire spring 204 and the elastic expansion block 205 are located outside the expansion core 209.
The expansion core 209 is tapered, and the outer diameter of the expansion core 209 at one end close to the lifting sleeve 203 is small, and the outer diameter of the expansion core 209 at the other end close to the elastic piece 205 is large, so that the surface of the expansion core 209 opposite to the lifting sleeve 203, the wire spring 204, and the elastic piece 205 forms a tapered surface.
During the process of opening or closing the gas lift hole 102 on the working cylinder 1, the lifting sleeve 203 and the expansion core 209 move relatively, and the expansion core 209 and the second cylinder 201 are stationary relatively.
The steps of opening or closing the gas lift hole 102 in the embodiment of the present invention are similar to the steps of opening or closing the gas lift hole 102 by controlling the blanking plug 2 in the above embodiment, and are not described herein again.
In another possible implementation manner, as shown in fig. 3, a first sealing groove 210 and a second sealing groove 211 are provided on the second cylinder 201, and sealing rings are provided in the first sealing groove 210 and the second sealing groove 211.
The stopper 2 is located inside the working barrel 1, and when the second barrel 201 blocks the gas lift hole 102, the gas lift hole 102 is located between the first seal groove 210 and the second seal groove 211. Sealing rings are arranged in the first sealing groove 210 and the second sealing groove 211, and gas entering through the gas lift hole is isolated from entering the working barrel through the sealing effect of the sealing rings, so that the gas lift hole 102 is closed.
Optionally, one or more sealing rings may be disposed within first seal groove 210 and/or second seal groove 211. When a plurality of sealing rings are arranged, the sealing rings can be arranged in sequence, a spacer ring can be arranged between any two adjacent sealing rings, the spacer ring can support the sealing rings, and the sealing performance is guaranteed.
Optionally, the both ends of every seal groove are provided with the backing ring, and this backing ring can play the supporting role to the sealing washer, guarantees the leakproofness.
Wherein, the sealing ring can be a V-shaped ring or a sealing ring with other shapes.
The embodiment of the invention provides a gas lift tool, which comprises: the working barrel and the blanking plug further comprise a sealing groove and a sealing ring, when the gas lift hole is located between the first sealing groove and the second sealing groove, due to the effect of the sealing ring, the gas lift hole and the inner part of the working barrel are isolated, and the gas lift hole is closed.
In another possible implementation, as shown in fig. 3, the second cylinder 201 includes a mandrel 212 and a central valve body 213, and the mandrel 212 is connected with the central valve body 213.
For example, one end of the mandrel 212 is provided with threads, one end of the middle valve body 213 is also provided with threads, and the middle valve body 213 is matched with the threads arranged on the mandrel 212, and the two are connected through the threads.
Optionally, the middle valve body 213 includes a first end and a second end opposite to each other, a groove and an internal thread are sequentially disposed at the first end of the middle valve body 213 from inside to outside along the central axis direction of the middle valve body 213, and an O-ring is disposed in the groove. At one end of the mandrel 212, a first part and a second part are sequentially arranged from inside to outside along the central axis direction of the mandrel 212, the first part is provided with external threads, and the outer side surface of the second part is a smooth surface. The O-ring is located on the outer surface of the second part and can provide a seal when the spindle 212 is screwed into the middle valve body 213.
On the mandrel 212, the lifting sleeve 203 is sleeved outside the mandrel 212, and the wire spring 204 and the elastic block 205 are located outside the mandrel 212.
The spindle 212 is tapered, and the outer diameter of the spindle 212 at one end near the lifting sleeve 203 is smaller, and the outer diameter at the other end near the telescopic spring block 205 is larger, so that the surfaces of the spindle 212 opposite to the lifting sleeve 203, the wire spring 204 and the telescopic spring block 205 form a tapered surface.
Optionally, the second cylinder 201 further comprises a lower joint 214, and the middle valve body 213 is connected with the lower joint 214.
Wherein, at the second end of the middle valve body 213, a groove and an internal thread are sequentially arranged from inside to outside along the central axis direction of the middle valve body 213, and an O-ring is arranged in the groove. At one end of the lower joint 214, a third portion and a fourth portion are sequentially arranged from inside to outside along the central axis direction of the lower joint 214, the third portion is provided with external threads, and the outer side surface of the fourth portion is a smooth surface. The O-ring is located on the outer surface of the fourth portion to provide a seal when the lower coupling 214 is threadedly coupled to the middle valve body 213.
Optionally, a first seal groove 210 is disposed on the mandrel 212, a second seal groove 211 is disposed on the lower joint 214, and seal rings are disposed in the first seal groove 210 and the second seal groove 211.
When the blanking plug 2 blocks the gas lift hole 102, the middle valve body 213 blocks the gas lift hole 102, and gas entering the working barrel is isolated from entering the working barrel by the sealing action of the sealing ring arranged in the first sealing groove 210 and the sealing ring arranged in the second sealing groove 211, so that the gas lift hole 102 is closed.
Accordingly, the gas lift hole 102 of the mandrel 1 can be opened or closed by controlling the stopper 2.
In closing the gas lift hole 102, the stopper 2 is located inside the cylinder 1, and the middle valve body 213 blocks the gas lift hole 102.
In the process of opening the gas lift hole 102, after the telescopic spring block 205 is separated from the groove 103, the lifting sleeve 203 is continuously moved towards the second direction until the middle valve body 213 is moved to expose the gas lift hole 102, so as to open the gas lift hole 102.
The specific steps of opening or closing the gas lift hole 102 in the embodiment of the present invention are similar to the steps of opening or closing the gas lift hole 102 by controlling the blanking plug 2 in the above embodiment, and are not described herein again.
FIG. 4 is a flow chart illustrating a method of using a gas lift tool, as an example of a process for closing a gas lift port, according to an exemplary embodiment, the method comprising:
in step 401, a plug is placed inside the mandrel and a second cylinder is plugged into the gas lift hole.
In step 402, the lifting sleeve is moved to a first direction, the first direction is a direction close to the telescopic elastic block, the telescopic elastic block is pushed to move, the telescopic elastic block is popped up and is clamped in the groove.
In one possible implementation, a first boss is arranged on the inner surface of the first cylinder, and a second boss is arranged on the outer surface of the blanking plug; the blanking plug also includes a shear pin connecting the running tool and the second barrel.
And the blanking plug is placed inside the working barrel by utilizing the feeding tool, the gas lift hole is blocked by the second barrel body, and the first boss is contacted with the second boss.
The feeding tool generates relative movement with the second cylinder under the action of external force, and the shearing pin is sheared under the stress.
In another possible implementation mode, the second cylinder comprises a mandrel and a middle valve body, the mandrel is connected with the middle valve body, the blanking plug is placed inside the working cylinder, and the middle valve body is used for blocking the gas lift hole.
According to the method provided by the embodiment of the invention, the air lift hole is blocked by moving the blanking plug, the air lift hole is closed, the telescopic elastic block is controlled to pop up and be clamped in the groove, the blanking plug is fixed, and the closed state of the air lift hole is kept. The embodiment of the invention provides a using method of a gas lift tool, which does not need to arrange a gas lift valve or lift the gas lift valve out of the ground to adjust the pressure of the gas lift valve, simplifies the operation, shortens the operation period, saves the operation cost, does not need to inject killing fluid to kill a well, and avoids the damage to the stratum.
FIG. 5 is a flow chart illustrating a method of using another gas lift tool according to an exemplary embodiment, by way of example, to open a gas lift port, the method comprising:
in step 501, the lifting sleeve is moved in a second direction away from the wire spring, and the wire spring drives the elastic block to move to be separated from the groove.
In step 502, the lift sleeve continues to move in a second direction away from the resilient block until the second cylinder moves to expose the gas lift aperture.
In one possible implementation, the second cylinder comprises a mandrel and a middle valve body, and the mandrel is connected with the middle valve body; and continuing to move the lifting sleeve towards the second direction until the middle valve body moves to expose the gas lift hole.
According to the method provided by the embodiment of the invention, under the condition that the gas lift hole is blocked by the blanking plug, the telescopic elastic block is controlled to be separated from the groove, the blanking plug is moved to expose the gas lift hole, and the gas lift hole is opened. The embodiment of the invention provides a using method of a gas lift tool, which does not need to arrange a gas lift valve or lift the gas lift valve out of the ground to adjust the pressure of the gas lift valve, simplifies the operation, shortens the operation period, saves the operation cost, does not need to inject killing fluid to kill a well, and avoids the damage to the stratum.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. 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.
Claims (11)
1. A gas lift tool, comprising: a working barrel (1) and a blanking plug (2);
the working cylinder (1) comprises a first cylinder body (101) and a gas lift hole (102), the gas lift hole (102) is arranged on the first cylinder body (101), and a groove (103) is formed in the inner wall of the first cylinder body (101);
the blanking plug (2) comprises a second cylinder body (201), a sleeve (202), a lifting sleeve (203), a wire spring (204) and a telescopic elastic block (205), wherein the lifting sleeve (203) is sleeved outside the second cylinder body (201), and the sleeve (202) is sleeved outside the lifting sleeve (203);
the lifting sleeve (203) is connected with the wire spring (204), and the wire spring (204) is connected with the telescopic elastic block (205);
the surface of the second cylinder (201) opposite to the lifting sleeve (203), the wire spring (204) and the telescopic elastic block (205) forms a conical surface;
a fluid channel (206) is arranged in the center of the blanking plug (2), and oil and gas can flow through the fluid channel (206);
the blanking plug (2) is located inside the working barrel (1), when the second barrel (201) blocks the gas lift hole (102), the lifting sleeve (203) is moved to a first direction under the action of external force, the first direction is a direction close to the telescopic elastic block (205), the telescopic elastic block (205) is pushed to move, and the telescopic elastic block (205) is ejected and clamped in the groove (103); or the lifting sleeve (203) moves towards a second direction, the second direction is a direction far away from the telescopic elastic block (205), and the telescopic elastic block (205) is driven to move through the wire spring (204) and is separated from the groove (103).
2. Gas lift tool according to claim 1, characterized in that the inner diameter of the mandrel (1) is larger than the outer diameter of the plug (2) and the difference between the inner diameter of the mandrel (1) and the outer diameter of the plug (2) is comprised between 0.2 mm and 1.4 mm.
3. Gas lift tool according to claim 2, characterized in that the difference between the inner diameter of the mandrel (1) and the outer diameter of the plug (2) is comprised between 0.5 mm and 1.1 mm.
4. A gas lift tool according to claim 1, wherein the first cylinder (101) is provided with a first boss (104) on an inner surface thereof and the plug (2) is provided with a second boss (207) on an outer surface thereof; the plug (2) further comprising a shear pin (208), the shear pin (208) connecting a running tool and the second barrel (201);
feeding the blanking plug (2) into the working barrel (1) by using the feeding tool, so that the second barrel body (201) blocks the gas lift hole (102), and the first boss (104) is in contact with the second boss (207);
the running tool is subjected to external force to move relative to the second cylinder (201), and the shearing pin (208) is sheared under force.
5. The gas lift tool according to claim 1, wherein the plug (2) further comprises an expansion core (209), the expansion core (209) is sleeved on the second cylinder (201), the lifting sleeve (203) is sleeved outside the expansion core (209), the wire spring (204) and the telescopic elastic block (205) are located outside the expansion core (209), and the expansion core (209) is conical.
6. The gas lift tool of claim 1, wherein the second cylinder (201) is provided with a first seal groove (210) and a second seal groove (211), and wherein the first seal groove (210) and the second seal groove (211) are provided with sealing rings;
when the second cylinder (201) blocks the gas lift hole (102), the gas lift hole (102) is located between the first sealing groove (210) and the second sealing groove (211).
7. The gas lift tool according to claim 1, wherein the second cylinder (201) comprises a spindle (212), a middle valve body (213), the spindle (212) and the middle valve body (213) being connected;
the lifting sleeve (203) is sleeved outside the mandrel (212), the wire spring (204) and the telescopic elastic block (205) are positioned outside the mandrel (212), and the mandrel (212) is conical;
the blanking plug (2) is located inside the working barrel (1), and the middle valve body (213) plugs the gas lift hole (102).
8. A method of using a gas lift tool, applied to a gas lift tool according to any one of claims 1 to 7, the method comprising:
placing the blanking plug (2) in the working barrel (1), and blocking the gas lift hole (102) by the second barrel (201); moving the lifting sleeve (203) to a first direction, wherein the first direction is a direction close to the telescopic elastic block (205), pushing the telescopic elastic block (205) to move, ejecting the telescopic elastic block (205) and clamping the telescopic elastic block in the groove (103); or,
moving the lifting sleeve (203) to a second direction, wherein the second direction is a direction far away from the telescopic elastic block (205), and the wire spring (204) drives the telescopic elastic block (205) to move and separate from the groove (103); continuing to move the lifting sleeve (203) in the second direction until the second cylinder (201) moves to expose the gas lift hole (102).
9. The method according to claim 8, characterized in that the first cylinder (101) is provided with a first boss (104) on its inner surface and the obturator (2) is provided with a second boss (207) on its outer surface; the plug (2) further comprising a shear pin (208), the shear pin (208) connecting a running tool and the second barrel (201);
placing the blanking plug (2) inside the working barrel (1) and blocking the gas lift hole (102) with the second barrel (201), comprising:
placing the blanking plug (2) inside the working barrel (1) by using the feeding tool, blocking the gas lift hole (102) by the second barrel body (201), and contacting the first boss (104) and the second boss (207);
the running tool is subjected to external force and generates relative movement with the second cylinder (201), and the shear pin (208) is sheared by force.
10. The method according to claim 8, characterized in that the second cylinder (201) comprises a spindle (212) and a middle valve body (213), the spindle (212) and the middle valve body (213) being connected;
the plug (2) is placed inside the working barrel (1), the second barrel body (201) is plugged with the gas lift hole (102), and the plug comprises:
and placing the blanking plug (2) in the working barrel (1) and blocking the gas lift hole (102) by the middle valve body (213).
11. The method of claim 10, wherein continuing to move the lifting sleeve (203) in the second direction until the second cylinder (201) moves to expose the gas lift port (102) comprises:
continuing to move the lift sleeve (203) in the second direction until the center valve body (213) moves to expose the gas lift port (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910452807.1A CN112012701B (en) | 2019-05-28 | 2019-05-28 | Gas lift tool and method of use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910452807.1A CN112012701B (en) | 2019-05-28 | 2019-05-28 | Gas lift tool and method of use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112012701A CN112012701A (en) | 2020-12-01 |
| CN112012701B true CN112012701B (en) | 2022-08-30 |
Family
ID=73501315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910452807.1A Active CN112012701B (en) | 2019-05-28 | 2019-05-28 | Gas lift tool and method of use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112012701B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203961872U (en) * | 2014-07-08 | 2014-11-26 | 上海广联建设发展有限公司 | Endoporus is swollen footpath formula dart |
| CN205400660U (en) * | 2016-03-07 | 2016-07-27 | 荆州市赛瑞能源技术有限公司 | Inside blanking plug of oil pipe |
| CN206957617U (en) * | 2017-03-30 | 2018-02-02 | 中国石油天然气股份有限公司 | Throwing and fishing gas lift tool |
| CN208669251U (en) * | 2018-08-09 | 2019-03-29 | 东营市垦利石油机械有限责任公司 | A kind of sliding block trip spear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2860559C (en) * | 2013-08-23 | 2021-12-28 | 1069416 Alberta Ltd. | Plunger for gas lift system with novel skirt |
-
2019
- 2019-05-28 CN CN201910452807.1A patent/CN112012701B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203961872U (en) * | 2014-07-08 | 2014-11-26 | 上海广联建设发展有限公司 | Endoporus is swollen footpath formula dart |
| CN205400660U (en) * | 2016-03-07 | 2016-07-27 | 荆州市赛瑞能源技术有限公司 | Inside blanking plug of oil pipe |
| CN206957617U (en) * | 2017-03-30 | 2018-02-02 | 中国石油天然气股份有限公司 | Throwing and fishing gas lift tool |
| CN208669251U (en) * | 2018-08-09 | 2019-03-29 | 东营市垦利石油机械有限责任公司 | A kind of sliding block trip spear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112012701A (en) | 2020-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109723413B (en) | Injection well downhole flow regulator | |
| CN110131235A (en) | A kind of novel hydraulic support cylinder structure | |
| CN204024576U (en) | A kind of packer | |
| CN112012701B (en) | Gas lift tool and method of use | |
| CN106150810A (en) | A kind of injection pump of engine | |
| CN105673758B (en) | Gas compensating type gas spring | |
| CN204175214U (en) | Anchoring device | |
| CN107956902B (en) | Throttle valve | |
| CN109237056A (en) | A kind of plug-in precompression valve | |
| CN204436313U (en) | ROV hydraulic disk docking mechanism under water | |
| CN211201861U (en) | Packer | |
| CN110424914B (en) | Hydraulic support device for cased well | |
| CN203374905U (en) | Circumferential back pressure device | |
| CN108757974B (en) | Slide valve type zero leakage reversing valve | |
| CN110206509B (en) | Water level differential pressure control valve | |
| CN205918435U (en) | Take two effect water injection valve of spring homing | |
| CN209053600U (en) | A kind of novel high-pressure water filling long-acting packer | |
| CN207122298U (en) | A kind of sliding sleeve fracturing device | |
| CN206988192U (en) | A kind of pump high-pressure overflow valve | |
| CN104265709A (en) | Stacked sequence valve | |
| CN205559395U (en) | Hydraulic one -way valve | |
| CN221238250U (en) | Novel dual-cavity automatic switching rock blasting fracturing rod | |
| EP3071868B1 (en) | Valve, in particular water discharge valve for toilets | |
| CN220102107U (en) | Drain valve | |
| CN107489799A (en) | A kind of efficient precursor overflow valve |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |