CN201865627U - Ball valve type oil reservoir protective valve - Google Patents
Ball valve type oil reservoir protective valve Download PDFInfo
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- CN201865627U CN201865627U CN2010205187914U CN201020518791U CN201865627U CN 201865627 U CN201865627 U CN 201865627U CN 2010205187914 U CN2010205187914 U CN 2010205187914U CN 201020518791 U CN201020518791 U CN 201020518791U CN 201865627 U CN201865627 U CN 201865627U
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Abstract
The utility model relates to a ball valve type oil reservoir protective valve. The valve is characterized by comprising an upper movable tubular column module, a salvage releasing module, a ball valve stirring module, a connecting pipe, a ball sleeve, a lower spacing ring and a ball valve module, wherein the upper movable tubular column module is connected with the salvage releasing module; the lower part of the upper movable tubular column module is connected with the ball valve stirring module; the ball sleeve is arranged in the ball valve stirring module, and is provided with the ball valve module; and the lower spacing ring is sleeved on the lower part of the ball sleeve. The ball valve type oil reservoir protective valve has the advantages that a switch of the oil reservoir protective valve can be controlled only by lifting or releasing the production tubular column which is connected with the upper movable tubular column module without removing the protective valve in a well workover operation, so that both oil well leakage and oil well blowout can be prevented, and the oil reservoir and ocean environment can be protected.
Description
Technical field
The utility model belongs to the oil field development production technical field, particularly relates to a kind of ball-valve type oil layer protection valve.
Background technology
In present known oil field development, in order to ensure the downhole safety of production period, during being lowered to flow string, in order to prevent the generation of overflow, constantly pour into completion fluid in pit shaft, the completion fluid of missing in the reservoir not only can pollute reservoir, has also increased the completion cost simultaneously.If the completion fluid perfusion is untimely, also might cause the generation of overflow even blowout.So in order to protect oil reservoir not contaminated and marine environment is not contaminated in recovery process, it is necessary using the oil layer protection valve on producing well.
Board-like and the two kinds of oil layer protection valves of sleeve type of common valve have been used at present in the offshore oil gas well; but there is potential safety hazard in the board-like oil layer protection valve of common valve when underground work; there is complicated operation in sleeve type oil layer protection valve; need to increase steel wire operation; after comparing; above problem is not also solved, thus also do not have function and operation more perfect at present, can leakproof again can blowout prevention the oil layer protection valve.
Summary of the invention
The utility model provides a kind of ball-valve type oil layer protection valve for solving the technical problem that exists in the known technology, its can leakproof again can blowout prevention.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
Ball-valve type oil layer protection valve; it is characterized in that: comprise top movable tubing string module, salvage the module of slipping out of the hand, ball valve is stirred module, tube connector, ball cover, lower limit ring and ball valve module; described top movable tubing string module and the salvaging module of slipping out of the hand links to each other; the bottom of top movable tubing string module is stirred module with ball valve and is linked to each other; ball valve is stirred ball cover is installed in the module; the ball valve module is installed in the ball cover, and the ball cover bottom is set with the lower limit ring.
The utility model can also adopt following technical scheme:
Described top movable tubing string module comprises top connection, the inwall upper end of top connection is shaped on the screw thread that is connected with oil pipe, the inwall middle part of top connection is threaded with the top of sealing mandrel, the outside, middle part of described sealing mandrel is provided with seal modules, the inwall bottom of top connection is threaded with the top of shell pushing cylinder, the upper inside wall of the shell pushing cylinder pulling force pawl that has been threaded, the inwall lower end screw thread of shell pushing cylinder is connected with clip spring seat, is provided with the thrust jump ring between the step surface of the upper surface of clip spring seat and shell pushing cylinder.
The described salvaging module of slipping out of the hand comprises fishing head, fishing head is sleeved on the outside of sealing mandrel, the top of fishing head with the lower surface adjacency of the inwall middle bench of top connection, the lower end of fishing head links to each other with tube connector by internal thread, the outer wall middle part of fishing head is provided with non-return jump ring groove, the outside of fishing head is set with piston, piston is a tubular, the top of piston links to each other with the jump ring pressure cap by external screw thread, accompany the non-return jump ring between the end of piston and the jump ring pressure cap, the lower end of piston is connected with shear sleeve by internal thread, place between fishing head and shear sleeve and the piston forms first annular space, is shaped on the high pressure pressure transmission hole in the position corresponding with first annular space of piston; Lower end at fishing head is shaped on groove, is provided with shearing ring in this groove, and the upper surface and the shear sleeve of shearing ring are adaptive.
The slip out of the hand fishing head bottom of module of described salvaging is shaped on the low pressure pressure transmission hole, be shaped on pressure port at sealing mandrel and low pressure pressure transmission hole corresponding position, fishing head forms second annular space at place, low pressure hole with piston, in the above and below of second annular space, seal by first sealing ring between fishing head and the piston.
The middle part of described fishing head is equipped with the suspension step by external screw thread, hang between step and the jump ring pressure cap and accompany the pulling force pawl, the pulling force pawl is a tubular, be provided with direction and groove that barrel cut off parallel with axis in the bottom of pulling force pawl, the lower end of pulling force pawl is provided with inside projection, this projection is adaptive with the external surface that hangs step, and convex upper surface and the adaptive with it surface that hangs step be the conical surface, and the top of pulling force pawl is connected by the upper inside wall of external screw thread with the shell pushing cylinder.
Described ball valve is stirred module and is comprised the shift fork cover, the shift fork cover links to each other with tube connector by lock pawl, described lock pawl is a tubular, its top is shaped on internal thread, lock pawl links to each other by the external screw thread of internal thread with the tube connector middle part, it is parallel with axis that the top of lock pawl is provided with direction, and groove with the barrel cut-out, the bottom of lock pawl is provided with external screw thread, lock pawl links to each other by the internal thread of this external screw thread with shift fork cover top, the top outer of shift fork cover is provided with down thrust step surface and last thrust step surface, the middle part of shift fork cover is provided with shift fork radially, seals the lower surface and the lower limit ring adjacency of shift fork cover between shift fork and the shift fork cover by second sealing ring.
The upper end of described ball cover links to each other with tube connector by internal thread, the bottom of ball cover is shaped on external screw thread, the externally threaded top supporting positive cover that has been threaded, the top of supporting positive cover is provided with the lower limit ring, seal by the 3rd sealing ring between ball cover and the shift fork cover, the corresponding position of shift fork of stirring module with ball valve on the ball cover is provided with the hole, and shift fork passes this hole.
Described ball valve module is positioned at ball cover, comprise set screw, first spring, top cover labyrinth, ball valve core, bearing pin, lower sealing cover and second spring from top to bottom successively, described set screw is threaded on the inwall of ball cover, set screw is by being sleeved on the first spring top clamping top cover labyrinth of top cover labyrinth outside, top cover labyrinth and ball valve core adjacency;
Described ball valve core is one to be shaped on the spheroid in the hole of running through up and down, and the both sides of spheroid are shaped on the plane, and the center on each plane also is shaped on the pin shaft hole of plug-in mounting bearing pin, also is shaped on fork slot by its center on described each plane;
Described ball valve core is inserted on the ball cover by two bearing pins, and the shift fork end that ball valve is stirred module embeds in the fork slot of ball valve core;
The lower end of ball valve module is provided with lower sealing cover, and second spring top clamping of lower sealing cover by being sleeved on the lower sealing cover outside is on the step of ball cover.
Advantage and the good effect that the utlity model has are:
After the utility model had adopted above technical scheme, its advantage was:
1, do not need to trip out protective valve during workover treatment; carry on only needing or flow string that decline links to each other with the top movable tubing string can be controlled the switch of oil layer protection valve; the leakage that can prevent oil well can prevent the blowout of oil well again, also can protect oil reservoir and marine environment simultaneously.
2, owing to adopt metallic seal to substitute rubber seal between ball valve core and the upper and lower seal cover; therefore problems such as the aging and wearing and tearing of the burn into of rubber seal can have been avoided; and be not provided with any electronic component in the ball-valve type oil layer protection valve; switch is carried out by mechanical system; simple in structure, swift to operate easy, operational reliability is high; the maintenance intervals cycle is long, makes that this multi-functional ball-valve type oil layer protection valve can be in the down-hole long-term work.
3, in addition when cooperating the operation of " Y " joint flow string, can under the situation of fixed tubular column, test the static pressure or the stream pressure of oil reservoir.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the front view of ball valve core;
Fig. 3 is the C-C sectional view of Fig. 2;
Fig. 4 is the front elevation drawing of pulling force pawl;
Fig. 5 is the A-A sectional view of Fig. 4;
Fig. 6 is the preliminary installment state figure that contains the flow string of ball-valve type oil layer protection valve;
Fig. 7 is that the secondary that contains the flow string of ball-valve type oil layer protection valve inserts state diagram.
Among the figure:
1, top movable tubing string module: 11, top connection; 12, shell pushing cylinder; 13, thrust jump ring; 14, clip spring seat; 15, sealing mandrel; 151, seal modules; 152, pressure port; 153, ball seat step; 16, pulling force pawl; 161, boss; 162, slit;
The salvaging module of slipping out of the hand: 21, fishing head; 211, hang step; 212, non-return jump ring groove; 213, first sealing ring; 214, low pressure pressure transmission hole; 22, non-return jump ring; 23, jump ring pressure cap; 24, piston; 241, high pressure pressure transmission hole; 242, shear sleeve; 243, shearing ring;
Ball valve is stirred module: 31, shift fork cover; 311, following thrust step surface; 312, go up the thrust step surface; 32, lock pawl; 33, shift fork; 34, second sealing ring;
4, tube connector;
5, ball cover; 51, upper limit step; 52, the 3rd sealing ring;
6, lower limit ring;
7, supporting positive cover;
Ball valve module: 81, ball valve core; 811, pin shaft hole; 812, fork slot; 82, bearing pin; 83, lower sealing cover; 84, first spring; 85, top cover labyrinth; 86, second spring; 87, set screw; 88, the 4th sealing ring.
900, ball-valve type oil layer protection valve; 901, sealing is inserted in grappling; 902, oil pipe; 903, top packer; 904, preventer; 905, electric submersible pump; 906, oil pipe with holes; 907, sleeve pipe; 908, ball; 909, Y joint; 910, seating nipple; 911, hook; 912, tubing hanger; 913, pressure control pipe line; 914, storm valve; 915, vent valve; 916, blind pipe; 917, screen casing; 918, cable-passing packer.
The specific embodiment
For further understanding utility model content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 to Fig. 5,
A kind of ball-valve type oil layer protection valve; comprise top movable tubing string module 1, salvage the module of slipping out of the hand, ball valve is stirred module, tube connector 4, ball cover 5, lower limit ring 6, ball valve module; top movable tubing string module and the salvaging module of slipping out of the hand links to each other; the bottom of top movable tubing string module is stirred module with ball valve and is linked to each other; ball valve is stirred ball cover 5 is installed in the module; the ball valve module is installed in the ball cover, and the ball cover bottom is set with lower limit ring 6.
Top movable tubing string module comprises top connection 11, the inwall upper end of top connection is shaped on the screw thread that is connected with oil pipe, the inwall middle part of top connection is threaded with the top of sealing mandrel 15, the outside, middle part of sealing mandrel is provided with seal modules 151, top connection inwall bottom is threaded with the top of shell pushing cylinder 12, the upper inside wall of the shell pushing cylinder pulling force pawl 16 that has been threaded, the inwall lower end screw thread of shell pushing cylinder is connected with clip spring seat 14, be provided with thrust jump ring 13 between the step surface of the upper surface of clip spring seat and shell pushing cylinder, be shaped on ball seat step 153 near inside, lower end at the sealing mandrel.
The salvaging module of slipping out of the hand comprises fishing head 21, fishing head is sleeved on the outside of sealing mandrel 15, the lower surface adjacency of the inwall middle bench of the top of fishing head and top connection 11, the lower end of fishing head 21 links to each other with tube connector 4 by internal thread, the outer wall middle part of fishing head is provided with non-return jump ring groove 212, the outside of fishing head is set with piston 24, piston is a tubular, the top of piston links to each other with jump ring pressure cap 23 by external screw thread, accompany non-return jump ring 22 between the end of piston and the jump ring pressure cap, the lower end of piston is connected with shear sleeve 242 by internal thread, place between fishing head and shear sleeve and the piston forms first annular space, is shaped on high pressure pressure transmission hole 241 in the position corresponding with first annular space of piston; Lower end at fishing head 21 is shaped on groove, is provided with shearing ring 243 in this groove, and the upper surface of shearing ring and shear sleeve 242 are adaptive.
The slip out of the hand bottom of fishing head 21 of module of salvaging is shaped on low pressure pressure transmission hole 214, the sealing mandrel be shaped on pressure port 152 with low pressure pressure transmission hole corresponding position, fishing head forms second annular space at place, low pressure hole with piston, in the above and below of second annular space, seal by first sealing ring 213 between fishing head and the piston.
The middle part of fishing head 21 is equipped with by external screw thread and hangs step 211, hang between step and the jump ring pressure cap 23 and accompany pulling force pawl 16, the pulling force pawl is a tubular, be provided with direction and groove that barrel cut off parallel with axis in the bottom of pulling force pawl, the lower end of pulling force pawl is provided with inside projection, this projection is adaptive with the external surface that hangs step 211, and the adaptive with it surface of convex upper surface and suspension step is the conical surface, and the top of pulling force pawl is connected by the upper inside wall of external screw thread with shell pushing cylinder 12.
Ball valve is stirred module and is comprised shift fork cover 31, the shift fork cover links to each other with tube connector 4 by lock pawl 32, lock pawl is a tubular, its top is shaped on internal thread, lock pawl links to each other by the external screw thread of internal thread with the tube connector middle part, it is parallel with axis that the top of lock pawl is provided with direction, and groove with the barrel cut-out, the bottom of lock pawl is provided with external screw thread, lock pawl 32 links to each other by the internal thread that this external screw thread and shift fork overlap 31 tops, the top outer of shift fork cover also is provided with down thrust step surface 311 and last thrust step surface 312, the angle of following thrust step surface 311 and last thrust step surface 312 is identical with the lower inclined plane angle with ramp on the internal diameter of thrust jump ring, the middle part of shift fork cover also is provided with shift fork 33 radially, seal the lower surface and lower limit ring 6 adjacency of shift fork cover between shift fork and the shift fork cover by second sealing ring 34.
The upper end of ball cover 5 links to each other with tube connector 4 by internal thread, the bottom of ball cover is shaped on and is used for the external screw thread that is connected with miscellaneous part, the externally threaded top supporting positive cover 7 that has been threaded, the top of supporting positive cover is provided with lower limit ring 6, seal by the 3rd sealing ring 52 between ball cover and the shift fork cover 31, also be provided with the hole in the shift fork 33 corresponding places that position and ball valve are stirred module on the ball cover, shift fork passes this hole.
The ball valve module is positioned at ball cover, comprise set screw 87, first spring 84, top cover labyrinth 85, ball valve core 81, bearing pin 82, lower sealing cover 83, second spring 86 from top to bottom successively, set screw is threaded on the inwall of ball cover 5, set screw 87 holds out against top cover labyrinth by first spring 84 that is sleeved on top cover labyrinth 85 outsides, top cover labyrinth and ball valve core 81 adjacency seal by the 4th sealing ring between top cover labyrinth and the ball cover.
The lower end of ball valve module is provided with lower sealing cover 83, and lower sealing cover holds out against on the step of ball cover 5 by second spring 86 that is sleeved on the lower sealing cover outside, seals by the 4th sealing ring 88 between lower sealing cover and the ball cover.
Operating principle of the present utility model is:
See also Fig. 1, the last lower contact button-type of the utility model instrument is API standard button-type, is convenient to and being connected of other on-the-spot instrument and pipeline etc.Top connection 11 is connected with oil pipe 902, and ball cover 5 inserts sealing 901 with grappling and is connected by becoming button, plays and isolates bottom and indicate the effect that tubing string is lowered into.Annular space was suppressed after the oil layer protection valve was lowered to and puts in place; owing to be provided with pressure port 152 and low pressure pressure transmission hole 214, high pressure pressure transmission hole 241; therefore there is the effect of pressure reduction; piston 24 and shear sleeve 242 are in be subjected to upwards the power of downward power greater than the second annular space place that is subjected at the first annular space place; promote shear sleeve 242 and move down, cut off shearing ring 243.When piston drive jump ring pressure cap 23 moves down, drag non-return jump ring 22 and move down, move down into non-return jump ring groove 212 places, the non-return jump ring shrinks stuck, prevents the piston travelling backwards.
Owing to cut several axial slit 162 on the barrel of pulling force pawl 16 bottoms, reduced the rigidity of pulling force pawl bottom when bearing radial load significantly, so after the jump ring pressure cap that is connected with piston 24 moves down, owing to come from of the constraint disappearance of the upper inside wall of jump ring pressure cap 23 to the outside, pulling force pawl 16 bottoms, be that the pulling force pawl outside does not have the power with its banding, the locking state of pulling force pawl has promptly been removed.When on the pulling force pawl is stressed, moving, the boss 161 of pulling force pawl can have a pressure to hanging step 211, the radial component of the reaction force of this pressure is bigger, pulling force pawl bottom is outwards opened, pulling force pawl lower boss just can skid off along the adaptive surface that hangs step, and top movable tubing string module 1 just can move up.In like manner, the top movable tubing string also can move down.
The operating principle of ball valve module is as follows: when ball valve core 81 rotates; by about two bearing pins 82 be inserted in and guarantee its axial restraint in the pin shaft hole 811; owing to guarantee the slotted hole of shift fork traffic direction on the ball cover 5 and be installed in the shift fork center by the ball valve core in the shift fork cover; so moving up and down of shift fork this moment; can change into that shift fork slides and with respect to the rotation at ball valve core 81 centers in the fork slot 812 of ball valve core; realize that with this shift fork drives the ball valve core and rotates, realize the switch of oil layer protection valve.Under the effect of first spring 84; top cover labyrinth 85 and lower sealing cover 83 can be all in ball valve core rotating process; compress the ball valve core; and top cover labyrinth 85 and lower sealing cover 83 be metal material, directly contacts with the ball valve wicking surface, realizes sealing by milling; do not adopt any rubber seal; avoided the problems such as aging, corrosion of rubber element, thus the sealing of ball valve core guaranteed all the time, and make that this ball-valve type oil layer protection valve can be in the down-hole long-term work.Set screw 87 directly is threaded with ball cover 5, compresses seal by regulating with being connected of ball cover 5, guarantees the sealing of ball valve core with this.
The thrust jump ring 13 of ball-valve type oil layer protection valve directly is installed on the shell pushing cylinder 12, and thrust clip spring seat 14 is threaded with shell pushing cylinder 12, and clip spring seat and shell pushing cylinder are clamped the thrust jump ring, guarantee the stability of thrust jump ring.The shell pushing cylinder drives shift fork cover 31 by the thrust jump ring and moves up and down, shift fork puts when moving, shift fork 33 is inserted in shift fork and overlaps in 31 holes, on driving, move, ball valve core 81 is fixed by bearing pin 82, shift fork moves in the fork slot of ball valve core, and ball valve core 81 is that rotate at the center with the bearing pin under the drive of shift fork, realizes the switch of ball valve core.When the ball valve core turns to certain angle, by upper limit step 51 control the shift fork cover on the amount of moving, when shift fork puts when moving to upper limit step 51, the ball valve core stops operating, and closes fully.
It is as follows that shell pushing cylinder 12 drives shift fork cover 31 principles that move up and down by the thrust jump ring:
When top movable tubing string module 1 pressed down, shell pushing cylinder 12 promoted thrust jump ring 13, is shaped on ramp and lower inclined plane on the internal diameter of thrust jump ring respectively, and these two inclined-planes are identical with last thrust step surface 312 angles with the following thrust step surface 311 that shift fork overlaps on 31 respectively.When jump ring is promoted by the shell pushing cylinder; the lower inclined plane of jump ring contacts with last thrust step surface; because the suffered resistance of thrust jump ring this moment only is the frictional resistance between shift fork cover and the ball cover 5 and stirs ball valve core 81 needed power sums; Resistance Value is little; so the radial component of the suffered pressure of thrust jump ring is little; jump ring still can keep its original state substantially; can move down by promoting thrust step surface promotion shift fork cover; and then, open the oil layer protection valve by the rotation of shift fork drive ball valve core.When the thrust jump ring makes 31 motions of shift fork cover put in place by promoting thrust step surface 312, be that shift fork cover lower end is when contacting with lower limit ring 6, the resistance that moves downward of shift fork cover significantly increases suddenly, and then the pressure that is delivered on the thrust jump ring by last thrust step surface also increases considerably, the radial component of this pressure makes the thrust jump ring outwards open, the internal diameter of thrust jump ring equals the external diameter of the shift fork cover between thrust step surface 312 and the following thrust step surface 311, make that the thrust jump ring can be along this section of shift fork cover to lower slider, and slide into down below the thrust step surface.
When carrying on the top movable tubing string module 1, shell pushing cylinder 12 promotes the thrust jump ring by the clip spring seat 14 that installs thereon, is shaped on lower inclined plane on the internal diameter of thrust jump ring, and lower inclined plane is identical with angle with the following thrust step surface 311 that shift fork overlaps on 31.When jump ring is promoted by clip spring seat 14; the ramp of jump ring contacts with following thrust step surface; because the suffered resistance of thrust jump ring this moment only is the frictional resistance between shift fork cover and the ball cover 5 and stirs ball valve core 81 needed power sums; Resistance Value is little; so the radial component of the suffered pressure of thrust jump ring is little; jump ring still can keep its original state substantially; can promote shift fork and put and move by promoting down the thrust step surface; and then, close the oil layer protection valve by the rotation of shift fork drive ball valve core.When the thrust jump ring makes 31 motions of shift fork cover put in place by promoting down the thrust step surface, be that the step at shift fork cover middle part is when contacting with upper limit step 51, the resistance that moves upward of shift fork cover significantly increases suddenly, and then the pressure that is delivered on the thrust jump ring by following thrust step surface also increases considerably, the radial component of this pressure makes the thrust jump ring outwards open, the internal diameter of thrust jump ring equals the external diameter of the shift fork cover between thrust step surface 312 and the following thrust step surface 311, make the thrust jump ring upwards to slide, and slide into more than the thrust step surface along this section of shift fork cover.
Ball-valve type oil layer protection valve has also designed lock pawl 32, is used for the locking that ball valve is stirred module, and the lock pawl bottom directly is connected with the inwall that shift fork overlaps 31 tops by screw thread, and the elastic claw on lock pawl top directly is connected on the tube connector 4 by special thread.This special thread be not angle be 55 ~ 60 ° regular screw threads, on axial section, the ramp of every screw thread of described special thread and horizontal plane angulation are greater than its lower inclined plane and horizontal plane angulation.For example ramp becomes 75 ° with level, and lower inclined plane and horizontal plane are-15 °.
When screw thread is subjected to upwards thrust, because the angle of its ramp and horizontal plane is bigger, itself does not possess auto-lock function the inclined-plane of screw thread, adds the top of lock pawl and is cut several axial slits, has reduced the rigidity of lock pawl top when bearing radial load significantly.When being subjected to axial force big, horizontal component (being radial component) can open elastic claw, lock pawl can be on the screw thread on the tube connector one enclose upwards beat.
And when lock pawl was subjected to downward power, because the angle of its lower inclined plane and horizontal plane is less, the lower inclined plane of screw thread possessed auto-lock function, can guarantee that lock pawl no longer moves down.
When carrying on the top movable tubing string module 1, shift fork cover 31 drives lock pawls 32 and moves on together, when the ball valve core is closed fully, be shift fork put move to the upper limit step after, lock pawl is locked on the tube connector 4 by above-mentioned special thread, avoids the shift fork cover to move down automatically, plays locking action.
Lower end supporting positive cover 7 is installed on the ball cover, can set upright automatically by the auxiliary tube string, guarantees the smooth G.I.H of oil layer protection valve.
Method of operating of the present utility model is as follows:
See also Fig. 6 and Fig. 7; at first sealing 901 being inserted in ball-valve type oil layer protection valve 900 lower ends and grappling is connected; sealing lower end and blind pipe 916 are inserted in described grappling; screen casing 917 connects; ball-valve type protective valve upper end is connected with oil pipe 902; with oil pipe 902 ball-valve type oil layer protection valve is sent in the well; after sealing insertion top packer 903 is inserted in grappling; close preventer 904, preventer is positioned at the well head place, control oil pipe and sleeve pipe 907(or stratum) the switch of annular space; annular space is suppressed; utilize inside and outside differential pressure to cut off shearing ring 243, jump ring pressure cap 23 moves down, and discharges pulling force pawl 16; finish handspring, top movable tubing string module can abovely be carried.
When carrying on the top movable tubing string module 1, under the drive of shift fork 33, realize closing of protective valve.Ball valve core 81 turns to certain angle, by upper limit step 51 control shift fork cover 31 on the amount of moving, when shift fork puts when moving to the upper limit step, the ball valve core stops operating, and closes fully.Lift pipe string is to being lowered to the electric submersible pump position; connect other flow string instruments such as electric submersible pump 905, tubing hanger 912, pressure control pipe line 913, storm valve 914, cable-passing packer 918, vent valve 915; change preventer into tubing hanger 912 and continue running string, butt joint ball-valve type oil layer protection valve.
Wherein, the top of oil pipe also is equipped with hook 911, and moving up and down of top movable tubing string module is to realize by moving up and down by driving moving up and down of oil pipe of ground hook.
After butt joint is finished; when top movable tubing string module 1 presses down; under the thrust of thrust jump ring 13; whole shift fork cover 31 moves down; when the shift fork cover moved down into lower limit ring 6, under the effect of shift fork 33, ball valve core 81 rotated to the through hole on it and the angle of protective valve axis normal; ball-valve type oil layer protection valve is opened, can turn on pump production.
If will carry out the formation testing operation; it is stifled to pull Y out by steel wire operation earlier; described Y is stifled to be arranged in the top of the oil pipe that connects the oil layer protection valve and oil pipe with holes and seating nipple below the Y joint of electric submersible pump is installed; Y is stifled to be used to prevent that the anti-stratum of flowing back to of oil is gone when electric submersible pump from producing, and realizes the all-pass footpath of whole tubing string.
Before the later stage workover treatment, pitching 908 is seated at ball seat step 153, carries out clean-out service, behind the well-flushing just can on put on the movable tubing string of portion, protective valve is promptly closed under the effect of shift fork automatically, plays the effect of leakproof blowout prevention.
Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (8)
1. ball-valve type oil layer protection valve; it is characterized in that: comprise top movable tubing string module, salvage the module of slipping out of the hand, ball valve is stirred module, tube connector, ball cover, lower limit ring and ball valve module; described top movable tubing string module and the salvaging module of slipping out of the hand links to each other; the bottom of top movable tubing string module is stirred module with ball valve and is linked to each other; ball valve is stirred ball cover is installed in the module; the ball valve module is installed in the ball cover, and the ball cover bottom is set with the lower limit ring.
2. ball-valve type oil layer protection valve according to claim 1; it is characterized in that: described top movable tubing string module comprises top connection; the inwall upper end of top connection is shaped on the screw thread that is connected with oil pipe; the inwall middle part of top connection is threaded with the top of sealing mandrel; the outside, middle part of described sealing mandrel is provided with seal modules; the inwall bottom of top connection is threaded with the top of shell pushing cylinder; the upper inside wall of the shell pushing cylinder pulling force pawl that has been threaded; the inwall lower end screw thread of shell pushing cylinder is connected with clip spring seat, is provided with the thrust jump ring between the step surface of the upper surface of clip spring seat and shell pushing cylinder.
3. ball-valve type oil layer protection valve according to claim 1, it is characterized in that: the described salvaging module of slipping out of the hand comprises fishing head, fishing head is sleeved on the outside of sealing mandrel, the lower surface adjacency of the top connection inwall middle bench of fishing head top and top movable tubing string module, the lower end of fishing head links to each other with tube connector by internal thread, the outer wall middle part of fishing head is provided with non-return jump ring groove, the outside of fishing head is set with piston, piston is a tubular, the top of piston links to each other with the jump ring pressure cap by external screw thread, accompany the non-return jump ring between the end of piston and the jump ring pressure cap, the lower end of piston is connected with shear sleeve by internal thread, place between fishing head and shear sleeve and the piston forms first annular space, is shaped on the high pressure pressure transmission hole in the position corresponding with first annular space of piston; Lower end at fishing head is shaped on groove, is provided with shearing ring in this groove, and the upper surface and the shear sleeve of shearing ring are adaptive.
4. ball-valve type oil layer protection valve according to claim 1; it is characterized in that: the slip out of the hand fishing head bottom of module of described salvaging is shaped on the low pressure pressure transmission hole; be shaped on pressure port at sealing mandrel and low pressure pressure transmission hole corresponding position; fishing head forms second annular space at place, low pressure hole with piston; in the above and below of second annular space, seal by first sealing ring between fishing head and the piston.
5. ball-valve type oil layer protection valve according to claim 3; it is characterized in that: the middle part of described fishing head is equipped with the suspension step by external screw thread; hang between step and the jump ring pressure cap and accompany the pulling force pawl; the pulling force pawl is a tubular; be provided with direction and groove that barrel cut off parallel with axis in the bottom of pulling force pawl; the lower end of pulling force pawl is provided with inside projection; this projection is adaptive with the external surface that hangs step; and the adaptive with it surface of convex upper surface and suspension step is the conical surface, and the top of pulling force pawl is connected by the upper inside wall of external screw thread with the shell pushing cylinder.
6. ball-valve type oil layer protection valve according to claim 1; it is characterized in that: described ball valve is stirred module and is comprised the shift fork cover; the shift fork cover links to each other with tube connector by lock pawl; described lock pawl is a tubular; its top is shaped on internal thread; lock pawl links to each other by the external screw thread of internal thread with the tube connector middle part; it is parallel with axis that the top of lock pawl is provided with direction; and groove with the barrel cut-out; the bottom of lock pawl is provided with external screw thread; lock pawl links to each other by the internal thread of this external screw thread with shift fork cover top; the top outer of shift fork cover is provided with down thrust step surface and last thrust step surface; the middle part of shift fork cover is provided with shift fork radially; seal the lower surface and the lower limit ring adjacency of shift fork cover between shift fork and the shift fork cover by second sealing ring.
7. ball-valve type oil layer protection valve according to claim 1; it is characterized in that: the upper end of described ball cover links to each other with tube connector by internal thread; the bottom of ball cover is shaped on external screw thread; the externally threaded top supporting positive cover that has been threaded; the top of supporting positive cover is provided with the lower limit ring; by the sealing of the 3rd sealing ring, the corresponding position of shift fork of stirring module with ball valve on the ball cover is provided with the hole between ball cover and the shift fork cover, and shift fork passes this hole.
8. ball-valve type oil layer protection valve according to claim 1, it is characterized in that: described ball valve module is positioned at ball cover, comprise set screw, first spring, top cover labyrinth, ball valve core, bearing pin, lower sealing cover and second spring from top to bottom successively, described set screw is threaded on the inwall of ball cover, set screw is by being sleeved on the first spring top clamping top cover labyrinth of top cover labyrinth outside, top cover labyrinth and ball valve core adjacency;
Described ball valve core is one to be shaped on the spheroid in the hole of running through up and down, and the both sides of spheroid are shaped on the plane, and the center on each plane also is shaped on the pin shaft hole of plug-in mounting bearing pin, also is shaped on fork slot by its center on described each plane;
Described ball valve core is inserted on the ball cover by two bearing pins, and the shift fork end that ball valve is stirred module embeds in the fork slot of ball valve core;
The lower end of ball valve module is provided with lower sealing cover, and second spring top clamping of lower sealing cover by being sleeved on the lower sealing cover outside is on the step of ball cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205187914U CN201865627U (en) | 2010-09-06 | 2010-09-06 | Ball valve type oil reservoir protective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205187914U CN201865627U (en) | 2010-09-06 | 2010-09-06 | Ball valve type oil reservoir protective valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865627U true CN201865627U (en) | 2011-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205187914U Expired - Fee Related CN201865627U (en) | 2010-09-06 | 2010-09-06 | Ball valve type oil reservoir protective valve |
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| Country | Link |
|---|---|
| CN (1) | CN201865627U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936145A (en) * | 2010-09-06 | 2011-01-05 | 中国海洋石油总公司 | Ball valve type oil reservoir protective valve and operation method thereof |
| CN103485743A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Oil layer leakage-proof device |
| CN104695929A (en) * | 2015-03-02 | 2015-06-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well |
| CN105464620A (en) * | 2015-07-27 | 2016-04-06 | 宝鸡畅油石油设备有限公司 | Ground control test safety valve |
| CN110778735A (en) * | 2018-07-30 | 2020-02-11 | 永嘉东峰阀门有限公司 | Soft and hard double sealing ball valve |
-
2010
- 2010-09-06 CN CN2010205187914U patent/CN201865627U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936145A (en) * | 2010-09-06 | 2011-01-05 | 中国海洋石油总公司 | Ball valve type oil reservoir protective valve and operation method thereof |
| CN101936145B (en) * | 2010-09-06 | 2013-02-27 | 中国海洋石油总公司 | Ball valve type oil reservoir protective valve and operation method thereof |
| CN103485743A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Oil layer leakage-proof device |
| CN104695929A (en) * | 2015-03-02 | 2015-06-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well |
| CN104695929B (en) * | 2015-03-02 | 2018-09-18 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column |
| CN105464620A (en) * | 2015-07-27 | 2016-04-06 | 宝鸡畅油石油设备有限公司 | Ground control test safety valve |
| CN105464620B (en) * | 2015-07-27 | 2017-09-15 | 宝鸡畅油石油设备有限公司 | Ground control test safety valve |
| CN110778735A (en) * | 2018-07-30 | 2020-02-11 | 永嘉东峰阀门有限公司 | Soft and hard double sealing ball valve |
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Granted publication date: 20110615 Termination date: 20160906 |