CN112832711B - Flow control gauge - Google Patents
Flow control gauge Download PDFInfo
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- CN112832711B CN112832711B CN202011456893.2A CN202011456893A CN112832711B CN 112832711 B CN112832711 B CN 112832711B CN 202011456893 A CN202011456893 A CN 202011456893A CN 112832711 B CN112832711 B CN 112832711B
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- channel
- inner cavity
- middle cylinder
- hole
- flow
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Classifications
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The application discloses a accuse flow rule belongs to petrochemical equipment technical field. When the flow control gauge is lowered along with the flow gauge, a part of liquid in the flow gauge enters a channel communicated with the third channel and the second channel, the other part of liquid enters a lower cylinder of the flow control gauge, the liquid in the lower cylinder enters the middle cylinder through a first through hole formed in the flow control plate, the liquid enters a first channel of an upper cylinder through the middle cylinder, and the liquid enters the well oil pipe through the first channel, so that the maximum overflow area of the flow control plate is smaller than the inner cavity volume of the well oil pipe, the total volume of the liquid entering the well oil pipe is smaller than the inner cavity volume of the well oil pipe, and the liquid in the well oil pipe can be prevented from being sprayed out from the well oil pipe.
Description
Technical Field
The application relates to the technical field of petrochemical equipment, in particular to a flow control gauge.
Background
When the underground operation site starts and descends the well oil pipe, well control is crucial, oil sleeve annulus and oil pipe overflow are required to be immediately well controlled according to requirements, 4 technicians are generally required to complete the blowout control assembly within 3 minutes, the workload is large, and the quality requirement is high.
The well is a common procedure in underground operation, namely, a round well gauge smaller than the inner diameter of a casing but larger than the outer diameter of an oil pipe is connected at the lower end of a tubular column, and the round well gauge is used for detecting the inner diameter of the casing, verifying the depth of an artificial well bottom and the like. The diameter of the inner cavity of the drift size gauge is larger than that of the inner cavity of the oil pipe, and a large amount of working fluid including mud and the like can be sprayed out of the oil pipe during lowering, so that the higher the speed is, the more obvious the speed is.
The working solution is sprayed out from the oil pipe and can cause landing pollution, the working solution is sprayed out without shielding, the body health of wellhead operators is damaged, and after the working solution lands, the ground is wet and slippery, and the potential safety hazard that personnel fall and fall is formed, so that a flow control gauge for preventing the working solution from being sprayed out from the oil pipe is needed.
Disclosure of Invention
The embodiment of the application provides a accuse flow gauge, can prevent that working solution from spouting from oil pipe. The technical scheme is as follows:
in one aspect, a flow control gauge is provided, the flow control gauge comprises an upper cylinder, a middle cylinder and a lower cylinder, wherein the upper cylinder, the middle cylinder and the lower cylinder are all used for providing a flow channel for liquid;
a first channel and a second channel are arranged in the upper cylinder body, and the first channel is positioned in the second channel;
the upper end of the first channel is fixedly connected with the lower end of the well oil pipe, and the inner cavity of the well oil pipe is communicated with the first channel;
the lower end of the first channel is connected with the upper end of the middle cylinder body, and the first channel is communicated with the inner cavity of the middle cylinder body;
the lower end of the middle cylinder body is connected with the upper end of the lower cylinder body, the top of the lower cylinder body is provided with a diameter control plate, the diameter control plate is provided with at least one first through hole, the inner cavity of the middle cylinder body is communicated with the inner cavity of the lower cylinder body through the at least one first through hole, and the maximum flow passage area of the diameter control plate is smaller than the inner cavity volume of the well oil pipe;
the surface of second passageway cup joints in the drift size gauge, well barrel and lower barrel all are located in the drift size gauge, just well barrel's surface, lower barrel's surface with form the third passageway between the internal surface of drift size gauge, the third passageway with second passageway intercommunication, the second passageway with the third passageway all is used for providing flow path for liquid, and with lower barrel realizes the reposition of redundant personnel.
In a possible implementation manner, the upper cylinder body comprises a three-thread joint and a flow controller, a first accommodating cavity and the second channel are arranged in the three-thread joint, the first accommodating cavity is positioned in the second channel, and a second accommodating cavity is arranged in the flow controller;
the upper end of the first accommodating cavity is fixedly connected with the lower end of the well oil pipe, and the first accommodating cavity is communicated with the inner cavity of the well oil pipe;
the lower end of the first accommodating cavity is fixedly connected with the upper end of the flow controller, and the first accommodating cavity is communicated with the second accommodating cavity to form the first channel;
the lower end of the flow controller is connected with the upper end of the middle cylinder body.
In one possible implementation manner, the inner surface of the upper end of the first accommodating cavity is provided with a first inner thread, and the first inner thread is connected with a first outer thread on the outer surface of the lower end of the well oil pipe;
the inner surface of the lower end of the first accommodating cavity is provided with a second internal thread, and the second internal thread is connected with the upper end of the flow controller;
the outer surface of the second channel is provided with second external threads, and the second external threads are connected with the inner surface of the upper end of the drift size gauge.
In one possible implementation manner, the upper cylinder body further comprises a plugging rod, wherein the plugging rod is provided with a first groove with an upward opening;
one side of the flow controller is provided with a second through hole, and the lower end of the plugging rod penetrates through the second through hole and stretches into a second accommodating cavity of the flow controller.
In one possible implementation manner, a third external thread is arranged on the outer side of the plugging rod, a third internal thread is arranged on the inner surface of the second through hole, and the third internal thread is connected with the third external thread.
In one possible implementation manner, the outer surface of the first groove is provided with a second groove with an outward opening, and the second groove is located in the accommodating cavity of the flow controller.
In one possible implementation, the plugging rod is a T-shaped plugging rod, and the head of the T-shaped plugging rod is located outside the flow controller.
In one possible implementation manner, a step is arranged in the middle cylinder body, and a third through hole is formed in the step.
In one possible implementation, the upper step surface of the step is a conical step surface;
the middle cylinder body is internally provided with a pressure testing ball, and the spherical surface of the pressure testing ball is matched with the conical step surface so as to block the third through hole.
In one possible implementation manner, a limiting plate is further arranged in the middle cylinder, the limiting plate is located above the pressure testing ball and used for limiting the pressure testing ball to leave the middle cylinder, and at least one fourth through hole is formed in the limiting plate.
The beneficial effects that technical scheme that this application embodiment provided brought are:
when the flow control gauge is lowered along with the flow gauge, a part of liquid in the flow gauge enters a channel communicated with the third channel and the second channel, the other part of liquid enters a lower cylinder of the flow control gauge, the liquid in the lower cylinder enters the middle cylinder through a first through hole formed in the flow control plate, the liquid enters a first channel of an upper cylinder through the middle cylinder, and the liquid enters a well oil pipe through the first channel, so that the maximum overflow area of the flow control plate is smaller than the inner cavity volume of the well oil pipe, the total volume of the liquid entering the well oil pipe can be ensured to be smaller than the inner cavity volume of the well oil pipe, and the liquid in the well oil pipe can be prevented from being sprayed out from the well oil pipe.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a flow control gauge according to an embodiment of the present disclosure;
fig. 2 is a schematic structural view of a plugging rod according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a flow control gauge provided in an embodiment of the present application, referring to fig. 1, the flow control gauge includes an upper cylinder 1, a middle cylinder 2, and a lower cylinder 3, where the upper cylinder 1, the middle cylinder 2, and the lower cylinder 3 are all used to provide a flow channel for a liquid.
In one possible implementation, the upper cylinder 1 comprises a tri-thread joint 11 and a flow controller 12. In one possible implementation, the upper cylinder 1 further comprises a blocking rod 13.
In one possible implementation, a pressure test ball 22 is disposed within the middle cylinder 2. In one possible implementation, a limiting plate 23 is also provided in the middle cylinder 2.
For further explanation, the connection manner between the components in the flow control gauge and the working principle of the components are described below.
(1) Upper cylinder 1
The upper cylinder 1 is provided with a first channel 101 and a second channel 102, the first channel 101 is located in the second channel 102, the first channel 101 and the second channel 102 are both used for providing flow channels for liquid, and the liquid can be the liquid flowing into the flow control gauge when the flow control gauge is lowered along with the drift size gauge 4.
The upper end of the first channel 101 is fixedly connected with the lower end of a well oil pipe, and the inner cavity of the well oil pipe is communicated with the first channel 101, so that the liquid flowing in the first channel 101 can flow into the inner cavity of the well oil pipe or the liquid in the well oil pipe can flow back to the first channel 101 conveniently. Optionally, the upper end of the second channel 102 is lower than the upper end of the first channel 101, and the lower end of the second channel 102 is higher than the lower end of the first channel 101, so that the height of the second channel 102 is lower than the height of the first channel 101, that is, the first channel 101 penetrates the second channel 102, and both the upper end and the lower end of the first channel 101 extend out of the second channel 102.
In one possible implementation, when the diameter of the first channel 101 is equal to the diameter of the inner cavity of the well tubing, the upper cylinder 1 further comprises a first collar, and the lower end of the well tubing and the upper end of the first channel 101 are both sleeved in the inner cavity of the first collar, so that the inner cavity of the well tubing is aligned with and communicated with the upper end of the first channel 101.
In one possible implementation, the lower end of the well tubing may be sleeved outside the upper end of the first channel 101 when the diameter of the outer surface of the first channel 101 is smaller than the diameter of the inner cavity of the well tubing.
In one possible implementation, when the diameter of the first channel 101 is greater than the diameter of the well tubing, the lower end of the well tubing may be sleeved within the upper end of the first channel 101. In one possible implementation, the upper cylinder 1 comprises a tri-thread joint 11 and a flow controller 12. The three-thread joint 11 and the flow controller 12 are described in detail by the following (1.1) to (1.2).
(1.1) three-thread Joint 11
The three-thread joint 11 is provided with a first accommodating cavity and the second channel 102 which are communicated up and down, and the first accommodating cavity is positioned in the second channel 102.
Wherein the top of the first accommodating cavity is higher than the top of the second channel 102, the bottom of the first accommodating cavity is flush with the bottom of the second channel 102, i.e. the height of the first accommodating cavity is higher than the height of the second channel 102, and the upper end of the first accommodating cavity extends out of the second channel 102.
The upper end of the first accommodating cavity is fixedly connected with the lower end of the well oil pipe, and the first accommodating cavity is communicated with the inner cavity of the well oil pipe; the lower end of the first accommodating cavity is fixedly connected with the upper end of the flow controller 12. The upper end of the three-thread connector 11 is the upper end of the first accommodating cavity, and the lower end of the three-thread connector 11 is the lower end of the first accommodating cavity.
In one possible implementation, the inner surface of the upper end of the first receiving cavity is provided with a first internal thread 111, the first internal thread 111 being connected with a first external thread on the outer surface of the lower end of the well tubing; the inner surface of the lower end of the first accommodating cavity is provided with a second internal thread 112, and the second internal thread 112 is connected with the upper end of the flow controller 12; the outer surface of the second passage 102 is provided with a second external thread 113, and the second external thread 113 is connected with the inner surface of the upper end of the drift size gauge 4.
The outer surface of the lower end of the well oil pipe is provided with a first external thread, the first external thread is matched with the first internal thread 111, and the lower end of the well oil end is screwed on the upper end of the first accommodating cavity through the first external thread and the first internal thread 111, so that the first internal thread 111 is connected with the lower end of the well oil pipe, namely the upper end of the three-thread joint 11 is fixedly connected with the lower end of the well oil pipe.
The outer surface of the upper end of the flow controller 12 is provided with an external thread, the external thread is matched with the second internal thread 112, and the upper end of the flow controller 12 is screwed at the lower end of the first accommodating cavity through the external thread and the second internal thread 112, so that the connection between the second internal thread 112 and the lower end of the flow controller 12, namely the fixed connection between the lower end of the three-thread joint 11 and the upper end of the flow controller 12, is realized.
It should be noted that, the machining execution standard of the first internal thread 111 and the second internal thread 112 is not lower than the standard of the tubing connected by the construction, so as to ensure the normal performance of the work such as the pressure test of the tubing string.
The gauge 4 is in a tubular structure, the inner surface of the upper end of the gauge 4 is provided with an internal thread, the internal thread is matched with the second external thread 113, and the outer surface of the second channel 102 is screwed on the inner surface of the upper end of the gauge 4 through the second external thread 113 and the internal thread, so that the connection between the second external thread 113 and the inner surface of the upper end of the gauge 4 is realized, that is, the outer surface of the second channel 102 is sheathed in the gauge 4.
(1.2) flow controller 12
The flow controller 12 has a cylindrical structure, and a second accommodating cavity which is vertically communicated is arranged in the flow controller 12. When the lower end of the three-thread joint 11 is fixedly connected with the upper end of the flow controller 12, the first accommodating cavity is communicated with the second accommodating cavity to form the first channel 101.
It should be noted that, the diameter of the flow controller 12 is smaller than that of the first channel 101, and since the first channel 101 is located in the second channel 102, the outer surface of the second channel 102 is attached to the inner surface of the gauge 4, so that a fourth channel is formed between the outer surface of the flow controller 12 and the inner surface of the gauge 4, and the fourth channel is in communication with the second channel 102, so that the liquid in the fourth channel can flow into the second channel 102, or the liquid in the second channel 102 can flow back to the fourth channel.
In order to achieve a tubular string run-off and avoid floor pollution by liquid emerging from the upper mouth of the tubing, in one possible implementation, the upper barrel 1 further comprises a plugging rod 13, the plugging rod 13 being described in detail in (1.3) below.
(1.3) stopper rod 13
The stopper rod 13 is provided with a first recess 131 which opens upwardly. A second through hole is arranged at one side of the flow controller 12, and the lower end of the plugging rod 13 penetrates through the second through hole and stretches into a second accommodating cavity of the flow controller 12.
Since the first groove 131 provided in the plugging rod 13 has a solid bottom, when the lower end of the plugging rod 13 extends into the second accommodating cavity of the flow controller 12 through the second through hole, the effect of sealing the second accommodating cavity can be achieved.
In one possible implementation, the outside of the plugging rod 13 is provided with a third external thread 132, and the inner surface of the second through hole is provided with a third internal thread 121, and the third internal thread 121 is in fit connection with the third external thread 132.
The third external thread 132 may be located at the middle-upper portion of the plugging rod 13, and when the third external thread 132 is screwed on the third internal thread 121, the fixed connection between the plugging rod 13 and the flow controller 12 is achieved, and the top end of the plugging rod 13 extends out of the flow controller 12.
When the liquid in the well oil pipe is too much, the outer wall of the first groove 131 can be pierced, so that the liquid in the well oil pipe flows into the first groove 131 and flows into the fourth channel along the first groove 131, the pipe column drainage is realized, and the liquid in the well oil pipe can be prevented from being sprayed out from the upper end of the well oil pipe.
In a possible implementation, the outer surface of the first groove 131 is provided with a second groove 133 that is open outwards, and the second groove 133 is located in the receiving cavity of the flow controller 12.
When the liquid in the well oil pipe is too much, the bottom of the second groove 133 can be punctured, so that the liquid in the well oil pipe flows into the first groove 131 and flows out of the flow controller 12, so as to realize the drainage of the pipe column, and the liquid in the well oil pipe can be prevented from being sprayed out from the upper end of the well oil pipe. Since the thickness of the bottom of the second groove 133 is smaller than the thickness of the outer wall of the first groove 131, construction is facilitated to puncture the bottom of the second groove 133. In some embodiments, the second groove 133 is also referred to as a vulnerability groove.
In one possible implementation, the stopper rod 13 is a T-shaped stopper rod with its head 134 located outside the flow controller 12. For example, the embodiment of fig. 2 provides a schematic structural diagram of a plugging rod, where the head 134 of the T-shaped plugging rod is used as a wrench of the T-shaped plugging rod, so that a technician can screw the T-shaped plugging rod into the second through hole by applying a force to the head 134 of the T-shaped plugging rod. In some embodiments, the head 134 of the T-shaped plugging bar is also referred to as a wrench nose.
(2) Middle cylinder 2
The lower end of the first channel 101 is connected with the upper end of the middle cylinder 2, and the first channel 101 is communicated with the inner cavity of the middle cylinder 2, so that the liquid in the inner cavity of the middle cylinder 2 flows into the first channel 101 or the liquid in the first channel 101 is convenient to flow back to the inner cavity of the middle cylinder 2. In some embodiments, the middle cylinder 2 is referred to as a shutoff seat.
In one possible implementation, when the diameter of the outer surface of the lower end of the first channel 101 is equal to the diameter of the upper end of the middle cylinder 2, the flow control gauge further includes a second collar, and the outer surface of the lower end of the first channel 101 and the upper end of the middle cylinder 2 are both sleeved in the inner cavity of the second collar, so that the lower end of the first channel 101 is aligned with and communicated with the inner cavity of the middle cylinder 2.
In one possible implementation, when the diameter of the outer surface of the lower end of the first channel 101 is smaller than the diameter of the inner cavity of the middle cylinder 2, the outer surface of the lower end of the first channel 101 may be sleeved in the inner cavity of the upper end of the middle cylinder 2.
In one possible implementation, the middle cylinder 2 comprises a connection seat 24 and a tube 25 (see fig. 1). The connection base 24 and the pipe body 25 are described in detail by the following (2.1) to (2.2).
(2.1) connecting seat 24
The upper end of the connecting seat 24 is sleeved with the outer surface of the lower end of the first channel 101, and the bottom end of the connecting seat 24 is provided with at least one fifth through hole; the lower surface of the bottom end of the connecting seat 24 is fixedly connected with the upper end of the tube body 25, and the first channel 101 is communicated with the inner cavity of the tube body 25 through the at least one fifth through hole.
Wherein, a third groove with an upward opening is provided in the connecting seat 24, and the lower end of the first channel 101 is sleeved in the third groove. In a possible implementation manner, a fourth internal thread is provided on the inner surface of the third groove, a fourth external thread matching the fourth internal thread is provided on the outer surface of the lower end of the first channel 101, and the outer surface of the lower end of the first channel 101 is screwed in the third groove through the fourth internal thread and the fourth external thread.
In another possible implementation, the connection seat 24 is not provided with a third groove, but is provided with a central through hole, the upper end of which is sleeved with the outer surface of the lower end of the first channel 101, and the lower end of which is connected with the upper end of the tube body 25.
In a possible implementation manner, the inner surface of the upper end of the central through hole is provided with a fourth internal thread, the outer surface of the lower end of the first channel 101 is provided with a fourth external thread matching the fourth internal thread, and the outer surface of the lower end of the first channel 101 is screwed in the upper end of the central through hole through the fourth internal thread and the fourth external thread.
(2.2) tube 25
When the inner diameter of the tube 25 is larger than the diameter of the bottom end of the connecting seat 24, the bottom end of the connecting seat 24 is sleeved in the inner cavity of the upper end of the tube 25.
In one possible implementation manner, a fifth internal thread is provided on the inner surface of the upper end of the pipe body 25, a fifth external thread matching with the fifth internal thread is provided on the outer surface of the bottom end of the connecting seat 24, and the bottom end of the connecting seat 24 is screwed into the inner cavity of the upper end of the pipe body 25 through the fifth internal thread and the fifth external thread, so that the bottom end of the connecting seat 24 is sleeved in the inner cavity of the upper end of the pipe body 25.
When the diameter of the pipe 25 is equal to the diameter of the bottom end of the connecting seat 24, the bottom end of the connecting seat 24 is fixedly connected with the upper end of the pipe 25.
In one possible implementation, the lower surface of the connection seat 24 is fixedly connected with the upper end of the tube body 25 by welding.
In a possible implementation manner, the flow control gauge further includes a third coupling, and the lower end of the connecting seat 24 and the upper end of the pipe body 25 are both sleeved in the inner cavity of the third coupling, so that at least one fifth through hole provided on the lower surface of the connecting seat 24 or the central through hole of the connecting seat 24 is aligned with and communicated with the inner cavity of the pipe body 25, so that the liquid in the inner cavity of the pipe body 25 flows into the connecting seat 24, and the liquid in the connecting seat 24 is also facilitated to flow back into the inner cavity of the pipe body 25.
When the connecting seat 24 is provided with a central through hole, and the diameter of the pipe body 25 is smaller than that of the central through hole, the lower end of the central through hole is sleeved outside the pipe body 25.
In one possible implementation manner, the outer surface of the upper end of the pipe body 25 is provided with a sixth external thread, the inner surface of the lower end of the central through hole is provided with a sixth external thread matched with the sixth internal thread, and the upper end of the pipe body 25 is screwed in the inner cavity of the lower end of the central through hole through the sixth internal thread and the sixth external thread, so that the lower end of the central through hole is sleeved outside the pipe body 25.
In another possible implementation, the connection base 24 and the tube 25 are formed as an integral structure, and are not separate two parts.
In one possible implementation, a step 21 is provided in the middle cylinder 2, and the step 21 is described in detail in (2.3) below.
(2.3) step 21
A step 21 is provided in the middle cylinder 2, and a third through hole 201 is provided in the step 21.
When the step 21 is disposed in the middle cylinder 2, the inner cavity of the middle cylinder 2 is a stepped inner cavity, wherein a third accommodating cavity is formed between the inner surface of the middle cylinder 2 and the upper surface of the step 21 above the step 21, a fourth accommodating cavity is formed between the inner surface of the middle cylinder 2 and the lower surface of the step 21 below the step 21, and the third accommodating cavity is communicated with the fourth accommodating cavity through the third through hole 201, so that the liquid in the fourth accommodating cavity flows into the third accommodating cavity through the third through hole 201, and the liquid in the third accommodating cavity can also flow back into the fourth accommodating cavity through the third through hole 201.
In one possible implementation, the step 21 may be disposed in the tube 25 of the middle cylinder 2, and the receiving cavity between the upper surface of the step 21 and the upper surface of the connection seat 24 is the third receiving cavity.
In one possible implementation manner, the upper step 21 surface of the step 21 is a conical step 21 surface, and the pressure testing ball 22 is further disposed in the middle cylinder 2, where the upper step 21 surface is the upper surface of the step 21. The pressure test ball 22 is described in detail in the following (2.4).
(2.4) pressure test ball 22
The spherical surface of the pressure test ball 22 is matched with the surface of the conical step 21 to seal the third through hole 201. When the liquid in the fourth accommodating chamber increases, the liquid in the fourth accommodating chamber flows into the third through hole 201, and as the liquid in the third through hole 201 increases, the thrust exerted by the liquid on the pressure testing ball 22 increases, and when the thrust increases to a certain extent, the liquid flowing in the third through hole 201 pushes the pressure testing ball 22 to leave the conical step 21 surface, so that the pressure testing ball 22 leaves the upper opening of the third through hole 201, and the liquid flows into the third accommodating chamber through the third through hole 201.
When the liquid in the third accommodating chamber flows back to the fourth accommodating chamber, the pressure testing ball 22 falls onto the surface of the conical step 21, and the third through hole 201 is plugged again to form a seal.
In one possible implementation, in order to prevent the pressure test ball 22 from leaving the middle cylinder 2, a limiting plate 23 is further disposed in the middle cylinder 2, and the limiting plate 23 is described in detail in (2.5) below.
(2.5) limiting plate 23
The limiting plate 23 is located above the pressure testing ball 22, the limiting plate 23 is used for limiting the pressure testing ball 22 to leave the middle cylinder 2, and at least one fourth through hole is formed in the limiting plate 23.
The height between the limiting plate 23 and the upper surface of the step 21 is greater than the sphere diameter of the pressure test ball 22 so as to provide a movable space for the pressure test ball 22.
Because the limiting plate 23 is provided with at least one fourth through hole, the liquid in the third accommodating cavity can flow up and down through the fourth through hole, and the solid with the diameter larger than that of the fourth through hole can be prevented from entering the fourth accommodating cavity, so that the tightness of the pipe body 25 is damaged.
In a possible implementation manner, when the middle cylinder 2 includes the connecting seat 24 and the central hole is disposed in the connecting seat 24, the limiting plate 23 may be located at a lower opening of the central hole.
In one possible implementation, when the middle cylinder 2 includes the connection seat 24 and the third groove is provided in the connection seat 24, the middle cylinder 2 may not include the limiting plate 23, but the bottom end of the third groove performs the function of the limiting plate 23.
It should be noted that, since the outer surface of the second channel 102 of the upper cylinder 1 is sleeved in the gauge 4, the upper end of the middle cylinder 2 is connected with the lower end of the first channel 101 of the upper cylinder 1, and the first channel 101 is located in the second channel 102, the middle cylinder 2 is located in the gauge 4, and a fifth channel is formed between the outer surface of the middle cylinder 2 and the inner surface of the gauge 4, and the fifth channel is communicated with the fourth channel. Since the fourth passage communicates with the second passage 102, the fifth passage communicates with the second passage 102 through the fourth passage, that is, the fifth passage communicates with the second passage 102.
(3) Lower cylinder 3
The upper end of the lower cylinder body 3 is connected with the lower end of the middle cylinder body 2, the top of the lower cylinder body 3 is provided with a diameter control plate 31, the diameter control plate 31 is provided with at least one first through hole, the inner cavity of the middle cylinder body 2 is communicated with the inner cavity of the lower cylinder body 3 through the at least one first through hole, and the maximum flow passage area of the diameter control plate 31 is smaller than the inner cavity volume of the well oil pipe.
Wherein the lower end of the middle cylinder 2 is the lower end of the tube 25 of the middle cylinder 2. The inner cavity of the middle cylinder 2 is communicated with the inner cavity of the lower cylinder 3 through the at least one first through hole, so that liquid in the lower cylinder 3 can flow into the inner cavity of the middle cylinder 2 through the at least one first through hole conveniently, and liquid in the inner cavity of the middle cylinder 2 can flow back into the inner cavity of the lower cylinder 3 conveniently.
Since the diameter control plate 31 is provided with at least one first through hole, it is possible to prevent solids having a diameter larger than the first through hole from entering the lower cylinder 3 and to damage the sealing property of the lower cylinder 3.
The maximum flow area of the diameter control plate 31 is smaller than the inner cavity volume of the well oil pipe, so that the total volume of the liquid flowing into the well oil pipe in the lower cylinder body 3 is smaller than the inner cavity volume of the well oil pipe, and the liquid is prevented from being sprayed out from the upper end of the well oil pipe.
When the inner diameter of the upper end of the lower cylinder 3 is larger than the diameter of the lower end of the middle cylinder 2, the lower end of the middle cylinder 2 is sleeved in the inner cavity of the upper end of the lower cylinder 3.
In a possible implementation manner, a seventh internal thread is disposed on the inner surface of the upper end of the lower cylinder 3, a seventh external thread matched with the seventh internal thread is disposed on the outer surface of the lower end of the middle cylinder 2, and the lower end of the middle cylinder 2 is screwed in the inner cavity of the upper end of the lower cylinder 3 through the seventh internal thread and the seventh external thread, so that the lower end of the middle cylinder 2 is sleeved in the inner cavity of the upper end of the lower cylinder 3.
When the diameter of the upper end of the lower cylinder 3 is equal to the diameter of the lower end of the middle cylinder 2, the upper end of the lower cylinder 3 is fixedly connected with the lower end of the middle cylinder 2.
In one possible implementation, the upper end of the lower cylinder 3 is fixedly connected to the lower end of the middle cylinder 2 by welding.
In a possible implementation manner, the flow control gauge further comprises a fourth coupling 5, the lower end of the middle cylinder 2 and the upper end of the lower cylinder 3 are both sleeved in the inner cavity of the fourth coupling 5, and the inner cavity of the middle cylinder 2 and the inner cavity of the lower cylinder 3 are communicated through the at least one first through hole.
When the diameter of the upper end of the lower cylinder 3 is smaller than the diameter of the inner cavity of the lower end of the middle cylinder 2, the upper end of the lower cylinder 3 is sleeved in the middle cylinder 2.
In one possible implementation manner, the outer surface of the upper end of the lower cylinder 3 is provided with an eighth external thread, the inner surface of the lower end of the middle cylinder 2 is provided with an eighth external thread matched with the eighth internal thread, and the upper end of the lower cylinder 3 is screwed in the inner cavity of the lower end of the middle cylinder 2 through the eighth internal thread and the eighth external thread so as to realize that the upper end of the lower cylinder 3 is sleeved in the middle cylinder 2.
In one possible implementation, the bottom end of the lower barrel 3 is flush with the bottom end of the gauge block 4. In some embodiments, the lower barrel 3 is referred to as a diverter nipple.
Since the middle cylinder 2 is located in the gauge 4, the lower end of the middle cylinder 2 is connected to the upper end of the lower cylinder 3, so that the lower cylinder 3 is also located in the gauge 4, and a sixth channel is formed between the outer surface of the lower cylinder 3 and the inner surface of the gauge 4. The sixth passage communicates with the fifth passage to form a third passage. Since the fifth channel is communicated with the fourth channel, the third channel is communicated with the fourth channel, and the fourth channel is communicated with the second channel 102, so that the third channel is communicated with the second channel 102 through the fourth channel, that is, the third channel is communicated with the second channel 102, so as to realize split flow with the lower cylinder 3. After the second channel 102, the fourth channel, and the third channel are communicated, a gauge hole may be formed.
When the gauge block 4 is lowered, the gauge block 4 drives the flow control gauge block to be lowered because the upper cylinder body 1 of the flow control gauge block is connected with the gauge block 4. With the increase of the lowering depth, after the liquid flows into the gauge block 4, a part of the liquid in the gauge block 4 flows into the gauge through hole, and a part of the liquid flows into the inner cavity of the lower cylinder 3, so that the diversion is realized. When the liquid in the inner cavity of the lower cylinder 3 increases to a certain extent, the liquid flows into the inner cavity of the middle cylinder 2 through at least one first through hole on the diameter control plate. When the liquid in the inner cavity of the middle cylinder 2 increases to a certain degree, the liquid pushes up the pressure testing ball 22, and continuously rises along the inner cavity of the middle cylinder 2 through the third through hole 201. When the liquid in the inner cavity of the middle cylinder 2 increases to a certain degree again, the liquid in the middle cylinder 2 flows into the first channel 101 of the upper cylinder 1, and when the liquid in the first channel 101 increases to a certain degree, the liquid enters the well oil pipe. Since the maximum flow area of the diameter control plate 31 is smaller than the inner cavity volume of the well oil pipe, the liquid in the well oil pipe can be prevented from being sprayed out of the well oil pipe.
When the flow control gauge provided by the embodiment of the application is lowered along with the flow gauge, a part of liquid in the flow gauge enters the channel communicated with the third channel and the second channel, a part of liquid in the lower cylinder of the flow control gauge enters the middle cylinder through the first through hole arranged on the flow control plate, the liquid enters the first channel of the upper cylinder through the middle cylinder, and the liquid enters the well oil pipe through the first channel, so that the maximum overflow area of the flow control plate is smaller than the inner cavity volume of the well oil pipe, the total volume of the liquid entering the well oil pipe can be ensured to be smaller than the inner cavity volume of the well oil pipe, and the liquid in the well oil pipe can be prevented from being ejected from the well oil pipe. And the pressure testing ball is placed in the middle cylinder body, and the liquid is impacted upwards to enable the pressure testing ball to leave the third through hole, so that the liquid is not influenced to pass through, the operation of backwashing the well which is necessary after the well is cleared can be smoothly completed, the third through hole is automatically closed by the pressure testing ball after the well is cleared, the tubular column pressure testing can be realized by normal pressing, and the waste of tubular column pressure testing procedures which are necessary for pumping down, separate injection, hole filling and the like is avoided. And install the shutoff stick in the accuse flow ware, can throw the stick and stab the shutoff stick after accomplishing tubular column pressure test, realize tubular column drainage, avoid fluid to emerge from well oil pipe upper port and cause the pollution of falling to the ground. The flow control gauge not only solves the problem of floor pollution caused by liquid sprayed out of an oil pipe during the well dredging, but also solves the problem of pressure test of a pipe column at the same time, has ingenious conception, easy manufacture and simple operation, and is beneficial to popularization.
Claims (4)
1. The flow control gauge is characterized by comprising an upper cylinder (1), a middle cylinder (2) and a lower cylinder (3), wherein the upper cylinder (1), the middle cylinder (2) and the lower cylinder (3) are all used for providing a flow channel for liquid;
a first channel (101) and a second channel (102) are arranged in the upper cylinder body (1), and the first channel (101) is positioned in the second channel (102);
the diameter of the first channel (101) is the same as the diameter of the inner cavity of the well oil pipe, the upper cylinder (1) further comprises a first coupling, the lower end of the well oil pipe and the upper end of the first channel (101) are sleeved in the inner cavity of the first coupling, so that the inner cavity of the well oil pipe is aligned and communicated with the upper end of the first channel (101);
the diameter of the outer surface of the lower end of the first channel (101) is equal to the diameter of the upper end of the middle cylinder body (2), the flow control gauge further comprises a second coupling, the outer surface of the lower end of the first channel (101) and the upper end of the middle cylinder body (2) are sleeved in an inner cavity of the second coupling, and the first channel (101) is aligned and communicated with the inner cavity of the middle cylinder body (2);
the lower end of the middle cylinder body (2) is connected with the upper end of the lower cylinder body (3), a diameter control plate (31) is arranged at the top of the lower cylinder body (3), a plurality of first through holes are formed in the diameter control plate (31), the first through holes in the diameter control plate (31) are used for preventing solids larger than the diameter of the first through holes from passing through, the inner cavity of the middle cylinder body (2) is communicated with the inner cavity of the lower cylinder body (3) through the first through holes, and the maximum overflow area of the diameter control plate (31) is smaller than the inner cavity volume of the well oil pipe;
the outer surface of the second channel (102) is sleeved in the well gauge (4), the middle cylinder (2) and the lower cylinder (3) are both positioned in the well gauge (4), the bottom end of the lower cylinder (3) is flush with the bottom end of the well gauge (4), a third channel is formed among the outer surface of the middle cylinder (2), the outer surface of the lower cylinder (3) and the inner surface of the well gauge (4), the third channel is communicated with the second channel (102), and the second channel (102) and the third channel are both used for providing a flow channel for liquid and realizing split flow with the lower cylinder (3);
the upper cylinder body (1) comprises a three-thread joint (11) and a flow controller (12), a first accommodating cavity and a second channel (102) which are communicated up and down are arranged in the three-thread joint (11), the first accommodating cavity is positioned in the second channel (102), and a second accommodating cavity which is communicated up and down is arranged in the flow controller (12);
the upper end of the first accommodating cavity is fixedly connected with the lower end of the well oil pipe, and the first accommodating cavity is communicated with the inner cavity of the well oil pipe; the lower end of the first accommodating cavity is fixedly connected with the upper end of the flow controller (12), and the first accommodating cavity is communicated with the second accommodating cavity to form the first channel (101); the inner surface of the lower end of the first accommodating cavity is provided with a second internal thread (112), and the second internal thread (112) is connected with the external thread of the upper end of the flow controller (12); the outer surface of the second channel (102) is provided with a second external thread (113), and the second external thread (113) is connected with the internal thread of the inner surface of the upper end of the drift size gauge (4);
the lower end of the flow controller (12) is connected with the upper end of the middle cylinder body (2);
the middle cylinder body (2) is internally provided with a step (21) and a pressure testing ball (22), a third through hole (201) is formed in the step (21), the pressure testing ball (22) can be switched between plugging the third through hole (201) and opening the third through hole (201) under hydraulic drive, and when the third through hole (201) is plugged by the pressure testing ball (22), liquid in the inner cavity of the lower cylinder body (3) cannot flow into the inner cavity of the middle cylinder body (2); when the pressure test ball (22) opens the third through hole (201), liquid in the inner cavity of the lower cylinder (3) can flow into the inner cavity of the middle cylinder (2) through the third through hole (201), the upper step surface of the step (21) is a conical step surface, and the spherical surface of the pressure test ball (22) is matched with the conical step surface to seal the third through hole (201);
the upper cylinder body (1) further comprises a plugging rod (13), and the plugging rod (13) is provided with a first groove (131) with an upward opening;
one side of accuse flow ware (12) is provided with the second through-hole, the lower extreme of shutoff stick (13) runs through the second through-hole stretches into the second of accuse flow ware (12) holds the chamber, the outside of shutoff stick (13) is provided with third external screw thread (132), the internal surface of second through-hole is provided with third internal screw thread (121), third internal screw thread (121) with third external screw thread (132) are connected.
2. The flow control gauge according to claim 1, characterized in that the outer surface of the first groove (131) is provided with a second groove (133) which is open outwards, and the second groove (133) is located in the receiving cavity of the flow control device (12).
3. Flow control gauge according to claim 2, characterized in that the plugging rod (13) is a T-shaped plugging rod, the head (134) of which is located outside the flow control device (12).
4. The flow control gauge according to claim 1, wherein a limiting plate (23) is further arranged in the middle cylinder (2), the limiting plate (23) is located above the pressure test ball (22), the limiting plate (23) is used for limiting the pressure test ball (22) to leave the middle cylinder (2), and at least one fourth through hole is formed in the limiting plate (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011456893.2A CN112832711B (en) | 2020-12-10 | 2020-12-10 | Flow control gauge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011456893.2A CN112832711B (en) | 2020-12-10 | 2020-12-10 | Flow control gauge |
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| CN112832711B true CN112832711B (en) | 2023-07-25 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB652469A (en) * | 1947-09-26 | 1951-04-25 | Mcgaffey Taylor Corp | Improvements in or relating to well tools |
| US5193621A (en) * | 1991-04-30 | 1993-03-16 | Halliburton Company | Bypass valve |
| EP0612913A1 (en) * | 1993-02-24 | 1994-08-31 | Halliburton Company | Connector assembly for coiled tubing |
| RU2455459C1 (en) * | 2011-01-11 | 2012-07-10 | Олег Харисович Ахмедзянов | Downhole valve unit |
| CN103277078A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
| CN204252902U (en) * | 2014-11-07 | 2015-04-08 | 中国石油天然气集团公司 | Sleeve pipe drift size gauge tool |
| CN211448571U (en) * | 2019-11-04 | 2020-09-08 | 中国石油天然气股份有限公司 | Drifting, well washing and sand washing integrated downhole operation tool |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367566B1 (en) * | 1998-02-20 | 2002-04-09 | Gilman A. Hill | Down hole, hydrodynamic well control, blowout prevention |
| CN2628708Y (en) * | 2003-06-04 | 2004-07-28 | 胜利油田银星技术开发公司 | Screw pump oil production pipe column pressure test apparatus |
| CN202882807U (en) * | 2012-10-25 | 2013-04-17 | 中国石油化工股份有限公司 | Large-inclination directional well downhole single-direction sand-washing flood-relief sand-stopping device |
| CN203285375U (en) * | 2013-05-27 | 2013-11-13 | 中国石油化工股份有限公司 | Blocking gauge cutter |
| CN104295258B (en) * | 2014-10-08 | 2017-08-29 | 宝鸡瑞通石油装备有限公司 | The integral operation gauguste cutter of new dredging, scraping wall and working string |
| CN105134143B (en) * | 2015-09-01 | 2017-07-25 | 中国石油天然气股份有限公司 | Inject well operations oil jacket shunting balance blowout prevention tubing string |
| CN205012991U (en) * | 2015-10-07 | 2016-02-03 | 杨庆军 | Novel oil well pressure testing assembly |
| CN206681707U (en) * | 2017-04-21 | 2017-11-28 | 中国石油化工股份有限公司 | Hammering oil discharger |
| CN208168840U (en) * | 2018-04-20 | 2018-11-30 | 中国石油化工股份有限公司 | A kind of running string blowout prevention nipple |
| CN210858638U (en) * | 2019-10-23 | 2020-06-26 | 中国石油化工股份有限公司 | Well pipe column and blowout preventer thereof |
-
2020
- 2020-12-10 CN CN202011456893.2A patent/CN112832711B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB652469A (en) * | 1947-09-26 | 1951-04-25 | Mcgaffey Taylor Corp | Improvements in or relating to well tools |
| US5193621A (en) * | 1991-04-30 | 1993-03-16 | Halliburton Company | Bypass valve |
| EP0612913A1 (en) * | 1993-02-24 | 1994-08-31 | Halliburton Company | Connector assembly for coiled tubing |
| RU2455459C1 (en) * | 2011-01-11 | 2012-07-10 | Олег Харисович Ахмедзянов | Downhole valve unit |
| CN103277078A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
| CN204252902U (en) * | 2014-11-07 | 2015-04-08 | 中国石油天然气集团公司 | Sleeve pipe drift size gauge tool |
| CN211448571U (en) * | 2019-11-04 | 2020-09-08 | 中国石油天然气股份有限公司 | Drifting, well washing and sand washing integrated downhole operation tool |
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|---|---|
| CN112832711A (en) | 2021-05-25 |
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