CN105840172B - Hydraulic valve for offshore testing pipe column and well completion pipe column - Google Patents
Hydraulic valve for offshore testing pipe column and well completion pipe column Download PDFInfo
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- CN105840172B CN105840172B CN201610187044.9A CN201610187044A CN105840172B CN 105840172 B CN105840172 B CN 105840172B CN 201610187044 A CN201610187044 A CN 201610187044A CN 105840172 B CN105840172 B CN 105840172B
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 10
- 230000001970 hydrokinetic effect Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 13
- 230000009471 action Effects 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 9
- 238000005553 drilling Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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Abstract
The invention relates to a hydraulic valve for an offshore testing string and a completion string, which is characterized in that: the device comprises a shell, wherein the rear end of the shell is fixedly connected with a joint, the joint is provided with a through hole communicated with the inside of the shell, and an annular gap is reserved between the front end of the joint and the inner wall of the shell; two positioning valve seats are arranged in the shell, the two positioning valve seats respectively and rotatably support a ball valve core with a through hole, the outer wall of the other side of each ball valve core is rotatably connected with a ball frame valve seat, the two ball frame valve seats are connected through an intermediate connecting cylinder, and more than one limiting block is connected between the intermediate connecting cylinder and the inner wall of the shell; a piston is respectively sleeved on the two positioning valve seats; two symmetrically arranged connecting rods are rotatably connected to the inner side of the piston, and the other ends of the two connecting rods are rotatably connected to the corresponding ball valve cores; the end part of each piston is fixedly connected with a boosting cylinder, and more than two springs which are arranged at intervals are connected between the two boosting cylinders; a plurality of hydraulic lines are arranged in the inner wall of the housing, and each hydraulic line is connected with a hydraulic line valve arranged at the front end of the housing.
Description
Technical Field
The invention relates to a hydraulic valve for a marine test string and a well completion string, and belongs to the technical field of marine oil and gas exploration and development operation equipment.
Background
When oil-gas well testing and well completion operations are carried out on floating drilling devices such as a semi-submersible platform or a drilling ship, the semi-submersible platform or the drilling ship can generate motions such as heave, pitch and roll under the influence of wind, wave, flow and the like, and a testing or well completion pipe column connected with the semi-submersible platform or the drilling ship moves along with the motions, so that offshore deep-water oil-gas well testing or well completion operations have high requirements on the reliability of equipment and tools and operation specifications. If severe sea conditions such as typhoons, tides or tsunamis are encountered in the offshore oil well testing or well completion operation process, the operation is required to be stopped immediately, a high-pressure well mouth is plugged, a pipe column is disconnected, and the semi-submersible platform or a drilling ship is evacuated from the well mouth position, so that the safety of operating personnel and equipment is ensured. Before the evacuation, a valve is required to be installed on a subsea release system in order to rapidly and safely block high-pressure oil and gas in a pipe string, and meanwhile, the valve has the functions of opening the valve to communicate with the inner cavity of the pipe string, closing the valve to block the high-pressure oil and gas in the well, shearing a coiled tubing or a cable in the pipe string and the like.
In addition, in order to realize the functions, the valve should adopt a hydraulic remote control mode which is easy to realize. At present, a ball valve is a common valve member in China, and a ball valve structure is also applied to an oil gas drilling tool. However, in the prior art, manual operation is required to open or close the ball valve, and a ball valve mechanism directly controlled by hydraulic pressure is very rare, and the ball valve mechanism cannot be matched with a pipe string for use in offshore oil and gas well testing or well completion operation.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a hydraulic valve for use in offshore test and completion strings. The testing pipe column or the well completion pipe column can be remotely and rapidly plugged and communicated under the hydraulic action, the control of high-pressure oil gas in the testing pipe column or the well completion pipe column is realized, and the dual plugging mechanism and the hydraulic failure protection mechanism are provided.
In order to achieve the purpose, the invention adopts the following technical scheme: a hydrokinetic valve for use in offshore test and completion strings, comprising: the connector comprises a tubular shell, the rear end of the shell is fixedly connected with a connector, a through hole communicated with the interior of the shell is formed in the connector, an extending end extending towards the interior of the shell is integrally formed at the front end of the connector, and an annular gap is reserved between the extending end and the inner wall of the shell; a first positioning valve seat is fixedly connected to a position close to the front end in the shell, an annular gap is reserved between the first positioning valve seat and the inner wall of the shell, a first ball valve core with a through hole is rotatably supported on the rear end face of the first positioning valve seat, a step face is arranged on the inner side of the extending end of the joint and is connected with a second positioning valve seat through a first spring, a second ball valve core with another through hole is rotatably supported on the front end face of the second positioning valve seat, the front end of the second ball valve core is rotatably connected with a second ball frame valve seat, the front end of the second ball frame valve seat is fixedly connected with an intermediate connecting cylinder, another step face is arranged on the inner side of the intermediate connecting cylinder close to the front end and is connected with a first ball frame valve seat through a second spring, the front end of the first ball frame valve seat is rotatably connected with the first ball valve core, and more than one limiting block is connected between the intermediate connecting cylinder and the inner wall of the shell; a first piston is sleeved on the first positioning valve seat; a second piston is sleeved on the extending end of the joint, two first connecting rods are rotatably connected to the inner side of the first piston, the two first connecting rods are symmetrically arranged, and the other ends of the two first connecting rods are rotatably connected to the first ball valve core; two second connecting rods are rotatably connected to the inner side of the second piston, the two second connecting rods are symmetrically arranged, and the other ends of the two second connecting rods are rotatably connected to a second ball valve core; the rear end of the first piston and the front end of the second piston are respectively and fixedly connected with a first boosting cylinder and a second boosting cylinder, and more than two third springs which are arranged at intervals are connected between the first boosting cylinder and the second boosting cylinder; three hydraulic pipelines are arranged in the inner wall of the shell, the inlet end of each hydraulic pipeline is connected with a hydraulic pipeline valve arranged at the front end of the shell, one of the hydraulic pipelines has an outlet end extending into a gap between the front end face of the first piston and the shell, the other hydraulic pipeline has an outlet end extending into a gap between the rear end face of the second piston and the shell, and the third hydraulic pipeline has an outlet end extending into the annular cavity between the two boosting cylinders in the middle of the shell.
The rear end of the second ball rack valve seat is symmetrically provided with two first supporting plates, the inner sides of the two first supporting plates are respectively provided with a first arc-shaped groove, each first arc-shaped groove is attached to the outer wall of the second ball valve core, and the rear ends of the two first supporting plates are respectively provided with a first arc surface; the front end of the first ball frame valve seat is symmetrically provided with two second supporting plates, the inner sides of the two second supporting plates are respectively provided with a second arc-shaped groove, each second arc-shaped groove is attached to the outer wall of the first ball valve core, and the front ends of the two supporting plates are respectively provided with a second arc surface; symmetrically cutting two arc extending platforms on the outer walls of the first ball valve core and the second ball valve core respectively; the first arc surfaces on the two first supporting plates of the second ball frame valve seat respectively abut against the arc extending table on the second ball valve core; the arc surfaces on the two supporting plates of the first ball frame valve seat respectively abut against the arc extending table on the first ball valve core.
Each hydraulic pipeline valve comprises a cylinder with a through hole, a connecting part is integrally arranged at the front end of the cylinder, a flange is arranged on the side wall of the cylinder, a mandrel with a liquid channel is embedded in the through hole of the cylinder, and threads are arranged on the outer surface of the cylinder; the integrated tapered valve body that is provided with of dabber, be located the tapered valve body rear end a fourth spring is established to the dabber cover, the front end fastening connection of fourth spring is in on the rear end face of tapered valve body, the rear end of fourth spring is supported one and is set up on the inboard step face of casing front end.
The rear end of the first boosting cylinder is fixedly connected with a plurality of first mandrels at intervals, the front end of the second boosting cylinder is fixedly connected with a plurality of second mandrels at intervals, and two ends of each third spring are respectively sleeved on the first mandrels and the second mandrels.
A first long groove body is formed in the outer wall of the first ball valve core and communicated with the through hole of the first ball valve core; and a second long groove body is formed in the outer wall of the second ball valve core and communicated with the through hole of the second ball valve core.
Sealing rings are respectively arranged at the connecting positions of the shell and the first positioning valve seat, the first piston, the first boosting cylinder, the second boosting cylinder and the second piston; sealing rings are respectively arranged at the joints of the first positioning valve seat and the first piston, the first piston and the intermediate connecting cylinder, the intermediate connecting cylinder and the second ball frame valve seat, the second ball frame valve seat and the second boosting cylinder, and the second piston and the joint; the rear end of the joint is provided with an internally concave annular groove body, and a plurality of hydraulic pipelines are arranged in the inner wall of the rear part of the joint.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention is provided with a shell, a plurality of hydraulic pipelines are arranged on the inner wall of the shell, the inlet end of each hydraulic pipeline is connected with a hydraulic pipeline valve arranged at the front end of the shell, the outlet end of one hydraulic pipeline extends into a gap between the front end surface of a first piston and the shell, the outlet end of the other hydraulic pipeline extends into a gap between the rear end surface of a second piston and the shell, and the outlet ends of the third hydraulic pipeline extend into an annular cavity positioned between two boosting cylinders in the middle of the shell; the inner sides of the first piston and the second piston are respectively and rotatably connected with two connecting rods, the other ends of the two connecting rods connected with the first piston are respectively and rotatably connected to the first ball valve core, the other ends of the two connecting rods connected with the second piston are respectively and rotatably connected to the second ball valve core, the linear motion of the first piston can be converted into the rotary motion of the first ball valve core, and the linear motion of the second piston is respectively converted into the rotary motion of the second ball valve core, so that the first ball valve core and the second ball valve core are independently or simultaneously opened, and the use efficiency of the invention is improved. 2. The invention is provided with two boosting cylinders, a plurality of springs are connected between the two boosting cylinders, the closing of a first ball valve core and a second ball valve core can be driven under the action of the springs, when the first ball valve core and the second ball valve core can not be completely closed, the auxiliary closing of the first ball valve core and the second ball valve core is realized under the action of introducing hydraulic oil into a third hydraulic pipeline, and when an obstacle (such as a cable or a continuous oil pipe) passes through the shell in the emergency closing process, the third hydraulic pipeline can be pressurized to promote the shearing of the continuous oil pipe or the cable, so that the effective closing of the second ball valve core is realized, and underground high-pressure oil gas is blocked. 3. Under the action of a plurality of springs between the two boosting cylinders, the first ball valve core and the second ball valve core are in a normally closed state, so that the hydraulic control failure protection device has the hydraulic control failure protection characteristic and has a hydraulic auxiliary locking function. The hydraulic control system can be widely applied to the matching connection with the wellhead of the testing pipe column during the testing operation of the deepwater oil-gas well, and realizes the direct hydraulic control.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is a schematic view of a joint structure of the present invention
FIG. 3 is a schematic view of the first positioning valve seat of the present invention
FIG. 4 is a schematic diagram of a first ball valve cartridge of the present invention
FIG. 5 is a schematic view of a second positioning seat according to the present invention
FIG. 6 is a schematic view of the second ball seat of the present invention
FIG. 7 is a schematic view of the construction of the intermediate connecting cylinder of the present invention
FIG. 8 is a schematic view of the structure of the first ball seat of the present invention
FIG. 9 is a schematic structural view of the stopper of the present invention
FIG. 10 is a schematic view of the structure of the first piston of the present invention
FIG. 11 is a schematic view of a partial structure assembly according to the present invention
FIG. 12 is a schematic diagram of the structure of a hydraulic line valve of the present invention
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, the present invention includes a tubular housing 1, a connector 3 is fastened to a rear end of the housing 1 through a threaded end cap 2, a through hole 4 communicating with the inside of the housing 1 is formed in the connector 3, a protruding end 31 (shown in fig. 2) extending toward the inside of the housing 1 is integrally formed at a front end of the connector 3, and an annular gap is formed between the protruding end 31 and an inner wall of the housing 1. A first positioning valve seat 5 (shown in fig. 3) is tightly connected to the inner side of the housing 1 near the front end, an annular gap is left between the first positioning valve seat 5 and the inner wall of the housing 1, and a first ball valve element 7 (shown in fig. 4) having a through hole 6 is rotatably supported by the rear end surface of the first positioning valve seat 5. A step surface 32 is provided on the inner side of the protruding end 31 of the joint 3, and the step surface 32 is connected to a second positioning valve seat 9 through a spring 8 (as shown in fig. 5). The front face of the second positioning seat 9 rotatably supports a second ball valve element 11 with a through hole 10. The front end of the second ball valve core 11 is rotatably connected with a second ball holder valve seat 12 (as shown in fig. 6), the front end of the second ball holder valve seat 12 is fixedly connected with an intermediate connecting cylinder 13 (as shown in fig. 7), the inner side of the intermediate connecting cylinder 13 close to the front end is provided with a step surface 131, the step surface 131 is connected with a first ball holder valve seat 15 (as shown in fig. 8) through a spring 14, and the front end of the first ball holder valve seat 15 is rotatably connected with the first ball valve core 7. One or more stoppers 16 (shown in fig. 9) for restricting the intermediate connecting cylinder 13 from moving in the front-rear direction are connected between the intermediate connecting cylinder 13 and the inner wall of the housing 1. A first piston 17 is sleeved on the first positioning valve seat 5 (as shown in fig. 10); the second piston 18 is sleeved on the extending end 31 of the joint 3, the inner side of the first piston 17 is rotatably connected with two first connecting rods 19, the two first connecting rods 19 are symmetrically arranged, and the other ends of the two first connecting rods 19 are rotatably connected on the first ball valve core 7. Two second connecting rods 20 are rotatably connected to the inner side of the second piston 18 (as shown in fig. 11), the two second connecting rods 20 are symmetrically arranged, and the other ends of the two second connecting rods 20 are rotatably connected to the second ball valve core 11. The rear end of the first piston 17 and the front end of the second piston 18 are respectively and tightly connected with a boosting cylinder 21 and 22, and more than two springs 23 which are arranged at intervals are connected between the two boosting cylinders 21 and 22. Three hydraulic lines 24 are arranged in the inner wall of the housing 1, the inlet end of each hydraulic line 24 is connected to a hydraulic line valve 25 arranged at the front end of the housing 1, the outlet end of one hydraulic line 24 extends into the gap between the front end face of the first piston 17 and the housing 1, the outlet end of the other hydraulic line 24 extends into the gap between the rear end face of the second piston 18 and the housing 1, and the outlet end of the third hydraulic line extends into an annular cavity (not shown) in the middle of the housing 1 between the two thrust cylinders 21, 22.
In the above embodiment, as shown in fig. 6, two supporting plates 121 are symmetrically disposed at the rear end of the second ball holder valve seat 12, an arc-shaped groove 122 is respectively disposed at the inner sides of the two supporting plates 121, each arc-shaped groove 122 is attached to the outer wall of the second ball valve core 11, and an arc surface 123 is respectively disposed at the rear end of each supporting plate 121. As shown in fig. 8, two supporting plates 151 are symmetrically disposed at the front end of the first ball seat 15, an arc groove 152 is respectively disposed at the inner side of each of the two supporting plates 151, each arc groove 152 is attached to the outer wall of the first ball valve element 7, and an arc surface 153 is respectively disposed at the front end of each of the two supporting plates 151. Two arc extending platforms 26 are symmetrically cut on the outer walls of the first ball valve core 7 and the second ball valve core 11 respectively (as shown in fig. 4 and 11); the arc surfaces 123 on the two support plates 121 of the second ball holder valve seat 12 abut against the two arc extending tables 26 on the second ball valve core 11; the arc surfaces 153 on the two support plates 151 of the first ball seat 15 abut against the two arc extending tables 26 on the first ball valve element 7. When the first ball valve element 7 and the second ball valve element 11 rotate respectively, the two arc surfaces 153 at the front end of the first ball holder valve seat 15 are rotatably connected with the side surface of the arc extending table 26 of the first ball valve element 7 respectively, and the two arc surfaces 123 at the front end of the second ball holder valve seat 12 are rotatably connected with the side surface of the arc extending table 26 of the second ball valve element 11 respectively.
In the above embodiment, as shown in fig. 12, each of the hydraulic line valves 25 includes a cylinder 251 having a through hole, a connection part 252 integrally formed at a front end of the cylinder 251 for connection with a device (not shown) for controlling the input of hydraulic oil, a flange 253 for limiting a position provided on a side wall of the cylinder 251, a core shaft 254 having a fluid passage inserted into the through hole of the cylinder 251, and a screw thread provided on an outer surface of the cylinder 251 for connection with the housing 1. The spindle 254 is integrally provided with a conical valve body 255, a spring 256 is sleeved on the spindle 254 at the rear end of the conical valve body 255, the front end of the spring 256 is tightly connected to the rear end surface of the conical valve body 255, and the rear end of the spring 256 abuts against a step surface (not shown) arranged on the inner side of the front end of the housing 1. Normally, the outer surface of the conical valve body 255 is in tight engagement with the inner surface of the cylindrical body 251. When hydraulic oil is supplied, the hydraulic pressure drives the conical valve body 255 to compress the spring 256, and the outer surface of the conical valve body 255 is disengaged from the inner surface of the cylindrical body 251, at which time the hydraulic line valve 25 is opened.
In the above embodiment, a plurality of mandrels 27 are fastened and connected at intervals at the rear end of the boosting cylinder 21, and correspondingly, a plurality of mandrels 28 are fastened and connected at intervals at the front end of the boosting cylinder 22, and two ends of each spring 23 are respectively sleeved on one mandrel 27, 28.
In the above embodiment, the outer wall of the first ball valve element 7 is provided with a long groove 29, and the long groove 29 is communicated with the through hole 6 of the first ball valve element 7 (as shown in fig. 4) for dredging the high-pressure liquid when the first ball valve element 7 is opened. The outer wall of the second ball valve core 11 is provided with a long groove body 30, and the long groove body 30 is communicated with the through hole 10 of the second ball valve core 11 and is used for dredging high-pressure liquid when the second ball valve core 11 is opened.
In the above embodiment, a sealing ring is respectively disposed at the connection between the housing 1 and the first positioning valve seat 5, the first piston 17, the boosting cylinder 21, the boosting cylinder 22, and the second piston 18. And sealing rings are respectively arranged at the joints of the first positioning valve seat 5 and the first piston 17, the first piston 17 and the intermediate connecting cylinder 13, the intermediate connecting cylinder 13 and the second ball frame valve seat 12, the second ball frame valve seat 12 and the boosting cylinder 22, and the second piston 18 and the joint 3. An internally concave annular groove 33 is provided at the rear end of the joint 3 to enable connection with a semi-closed ram blowout preventer (not shown), which prevents oil and gas leakage and intrusion of external seawater. In the inner wall of the rear part of the joint 3 there are arranged a number of hydraulic lines (not shown in the figure) for controlling the flow of hydraulic oil.
In use of the invention, as shown in figure 1, the front end of the housing 1 is engaged with a connector of a wellhead or completion string of a test string, and in the state of hydraulic oil input, the hydraulic line valves 25 are respectively opened, and under the action of one of the hydraulic lines 24, the first piston 17 moves backwards, and the first ball valve element 7 is driven to rotate by the two first connecting rods 19. Under the action of another hydraulic pipeline 24, the second piston 18 moves forwards, the second ball valve core 11 is driven to rotate through the two second connecting rods 20, the through hole 6 of the first ball valve core 7 is communicated with the through hole 10 of the second ball valve core 11, and therefore the opening of the invention is realized.
After the state of hydraulic oil feeding is completed, under the action of the spring 23, the first piston 17 and the second piston 18 respectively drive the first ball valve core 7 and the second ball valve core 11 to rotate, so that the first ball valve core 7 and the second ball valve core 11 are closed. Under the action of the spring 23, if the first piston 17 and the second piston 7 cannot be driven to move so as to completely close the first ball valve element 7 and the second ball valve element 11 or to improve the stability of the closed state, hydraulic oil may be introduced into a third hydraulic pipeline extending from the outlet end to the cavity in the middle of the housing 1, and the first piston 17 and the second piston 18 are further driven under the action of high-pressure oil gas and the spring 23, so that the auxiliary closing of the first ball valve element 7 and the second ball valve element 11 is realized. In addition, during an emergency shutdown, when an obstacle (such as a cable or a coiled tubing) passes through the interior of the present invention, the first and second ball spools 7 and 11 cannot be completely closed by the pressure of the spring 23 alone. At this time, hydraulic oil can be introduced into a third hydraulic pipeline extending to the cavity in the middle of the housing 1 from the outlet end to pressurize the third hydraulic pipeline, so that the second ball valve element 11 is closed, the coiled tubing or the cable is cut, the second ball valve element 11 is effectively closed, and high-pressure oil gas in the well is blocked.
In a normal state of non-hydraulic oil, because the hydraulic line valve 25 is in a closed state, under the action of the spring 23, the first ball valve core 7 and the second ball valve core 11 are in a closed state, a double protection mechanism is formed, and underground high-pressure oil gas can be efficiently and safely blocked.
In the above embodiments, the above embodiments are only used for illustrating the present invention, and the structure, connection mode, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.
Claims (10)
1. A hydrokinetic valve for use in offshore test and completion strings, comprising: the connector comprises a tubular shell, the rear end of the shell is fixedly connected with a connector, a through hole communicated with the interior of the shell is formed in the connector, an extending end extending towards the interior of the shell is integrally formed at the front end of the connector, and an annular gap is reserved between the extending end and the inner wall of the shell; a first positioning valve seat is fixedly connected to a position close to the front end in the shell, an annular gap is reserved between the first positioning valve seat and the inner wall of the shell, a first ball valve core with a through hole is rotatably supported by the rear end surface of the first positioning valve seat, a step surface is arranged on the inner side of the extending end of the joint and is connected with a second positioning valve seat through a first spring, a second ball valve core with another through hole is rotatably supported by the front end surface of the second positioning valve seat, the front end of the second ball valve core is rotatably connected with a second ball frame valve seat, the front end of the second ball frame valve seat is fixedly connected with an intermediate connecting cylinder, another step surface is arranged on the inner side close to the front end of the intermediate connecting cylinder and is connected with the first ball frame valve seat through a second spring, the front end of the first ball valve core is rotatably connected with the first ball valve core, and more than one limiting block is connected between the intermediate connecting cylinder and the inner wall of the shell; a first piston is sleeved on the first positioning valve seat; a second piston is sleeved on the extending end of the joint, two first connecting rods are rotatably connected to the inner side of the first piston, the two first connecting rods are symmetrically arranged, and the other ends of the two first connecting rods are rotatably connected to the first ball valve core; the inner side of the second piston is rotatably connected with two second connecting rods, the two second connecting rods are symmetrically arranged, and the other ends of the two second connecting rods are rotatably connected to a second ball valve core; the rear end of the first piston and the front end of the second piston are respectively and fixedly connected with a first boosting cylinder and a second boosting cylinder, and more than two third springs which are arranged at intervals are connected between the first boosting cylinder and the second boosting cylinder;
three hydraulic pipelines are arranged in the inner wall of the shell, the inlet end of each hydraulic pipeline is connected with a hydraulic pipeline valve arranged at the front end of the shell, one of the hydraulic pipelines has an outlet end extending into a gap between the front end face of the first piston and the shell, the other hydraulic pipeline has an outlet end extending into a gap between the rear end face of the second piston and the shell, and the third hydraulic pipeline has an outlet end extending into the annular cavity between the two boosting cylinders in the middle of the shell.
2. The hydraulic valve for offshore test and completion strings as recited in claim 1, wherein: the rear end of the second ball rack valve seat is symmetrically provided with two first supporting plates, the inner sides of the two first supporting plates are respectively provided with a first arc-shaped groove, each first arc-shaped groove is attached to the outer wall of the second ball valve core, and the rear ends of the two first supporting plates are respectively provided with a first arc surface; the front end of the first ball frame valve seat is symmetrically provided with two second supporting plates, the inner sides of the two second supporting plates are respectively provided with a second arc-shaped groove, each second arc-shaped groove is attached to the outer wall of the first ball valve core, and the front ends of the two supporting plates are respectively provided with a second arc surface; symmetrically cutting two arc extending platforms on the outer walls of the first ball valve core and the second ball valve core respectively; the first arc surfaces on the two first supporting plates of the second ball frame valve seat respectively abut against the arc extending table on the second ball valve core; the arc surfaces on the two supporting plates of the first ball frame valve seat respectively abut against the arc extending table on the first ball valve core.
3. The hydrokinetic valve for offshore test and completion strings of claim 1, wherein: each hydraulic pipeline valve comprises a cylinder with a through hole, a connecting part is integrally arranged at the front end of the cylinder, a flange is arranged on the side wall of the cylinder, a mandrel with a liquid channel is embedded in the through hole of the cylinder, and threads are arranged on the outer surface of the cylinder; the integrated tapered valve body that is provided with of dabber, be located the tapered valve body rear end a fourth spring is established to the dabber cover, the front end fastening connection of fourth spring is in on the rear end face of tapered valve body, the rear end of fourth spring is supported one and is set up on the inboard step face of casing front end.
4. The hydrokinetic valve for offshore test and completion strings of claim 2, wherein: each hydraulic pipeline valve comprises a cylinder with a through hole, a connecting part is integrally arranged at the front end of the cylinder, a flange is arranged on the side wall of the cylinder, a mandrel with a liquid channel is embedded in the through hole of the cylinder, and threads are arranged on the outer surface of the cylinder; the spindle is integrally provided with a conical valve body, the spindle is sleeved with a fourth spring at the rear end of the conical valve body, the front end of the fourth spring is fixedly connected to the rear end face of the conical valve body, and the rear end of the fourth spring abuts against a step face arranged on the inner side of the front end of the shell.
5. A fluid actuated valve for use in offshore test and completion strings as claimed in claim 1 or 2 or 3 or 4 wherein: the rear end of the first boosting cylinder is fixedly connected with a plurality of first mandrels at intervals, the front end of the second boosting cylinder is fixedly connected with a plurality of second mandrels at intervals, and two ends of each third spring are respectively sleeved on the first mandrels and the second mandrels.
6. A fluid actuated valve for use in offshore test and completion strings as claimed in claim 1 or 2 or 3 or 4 wherein: a first long groove body is formed in the outer wall of the first ball valve core and communicated with the through hole of the first ball valve core; and a second long groove body is formed in the outer wall of the second ball valve core, and the second long groove body is communicated with the through hole of the second ball valve core.
7. The hydrokinetic valve for offshore test and completion strings of claim 5, wherein: a first long groove body is formed in the outer wall of the first ball valve core and communicated with the through hole of the first ball valve core; and a second long groove body is formed in the outer wall of the second ball valve core and communicated with the through hole of the second ball valve core.
8. A fluid operated valve for use in offshore test and completion strings as claimed in claim 1 or 2 or 3 or 4 or 7 wherein: sealing rings are respectively arranged at the connecting positions of the shell and the first positioning valve seat, the first piston, the first boosting cylinder, the second boosting cylinder and the second piston; sealing rings are respectively arranged at the joints of the first positioning valve seat and the first piston, the first piston and the intermediate connecting cylinder, the intermediate connecting cylinder and the second ball frame valve seat, the second ball frame valve seat and the second boosting cylinder, and the second piston and the joint; the rear end of the joint is provided with an internally concave annular groove body, and a plurality of hydraulic pipelines are arranged in the inner wall of the rear part of the joint.
9. The hydrokinetic valve for offshore test and completion strings of claim 5, wherein: sealing rings are respectively arranged at the connecting positions of the shell and the first positioning valve seat, the first piston, the first boosting cylinder, the second boosting cylinder and the second piston; sealing rings are respectively arranged at the joints of the first positioning valve seat and the first piston, the first piston and the intermediate connecting cylinder, the intermediate connecting cylinder and the second ball frame valve seat, the second ball frame valve seat and the second boosting cylinder, and the second piston and the joint; the rear end of the joint is provided with an internally concave annular groove body, and a plurality of hydraulic pipelines are arranged in the inner wall of the rear part of the joint.
10. The hydrokinetic valve for offshore test and completion strings of claim 6, wherein: a sealing ring is respectively arranged at the connection position of the shell and the first positioning valve seat, the first piston, the first boosting cylinder, the second boosting cylinder and the second piston; sealing rings are respectively arranged at the joints of the first positioning valve seat and the first piston, the first piston and the intermediate connecting cylinder, the intermediate connecting cylinder and the second ball frame valve seat, the second ball frame valve seat and the second boosting cylinder, and the second piston and the joint; the rear end of the joint is provided with an internally concave annular groove body, and a plurality of hydraulic pipelines are arranged in the inner wall of the rear part of the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610187044.9A CN105840172B (en) | 2016-03-29 | 2016-03-29 | Hydraulic valve for offshore testing pipe column and well completion pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610187044.9A CN105840172B (en) | 2016-03-29 | 2016-03-29 | Hydraulic valve for offshore testing pipe column and well completion pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105840172A CN105840172A (en) | 2016-08-10 |
| CN105840172B true CN105840172B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610187044.9A Active CN105840172B (en) | 2016-03-29 | 2016-03-29 | Hydraulic valve for offshore testing pipe column and well completion pipe column |
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| CN (1) | CN105840172B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252682B (en) * | 2018-01-31 | 2020-02-14 | 中国海洋石油集团有限公司 | Marine oil gas test tubular column control bivalve |
| CN112012668B (en) * | 2020-10-12 | 2021-05-04 | 西南石油大学 | Deepwater oil-gas well completion operation pipe string releasing, plugging and shearing integrated device |
| CN114320178B (en) * | 2021-12-30 | 2023-07-25 | 西南石油大学 | Electro-hydraulic seat pipe column safety control device for deepwater well completion test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7086486B2 (en) * | 2004-02-05 | 2006-08-08 | Bj Services Company | Flow control valve and method of controlling rotation in a downhole tool |
| CN201187279Y (en) * | 2007-12-03 | 2009-01-28 | 大港油田集团有限责任公司 | Downhole differential pressure type normal open valve |
| CN105134096B (en) * | 2015-08-28 | 2017-10-20 | 西南石油大学 | A kind of marine test string frees arrangement for connecting system |
| CN205477581U (en) * | 2016-03-29 | 2016-08-17 | 中国海洋石油总公司 | A hydraulic operated valve for marine testing string and completion pipe string |
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| CN105840172A (en) | 2016-08-10 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: CHINA NATIONAL OFFSHORE OIL Corp. Applicant after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: CHINA NATIONAL OFFSHORE OIL Corp. Applicant before: CNOOC Research Institute |
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