CN205135544U - Bridging plug - Google Patents

Abstract

The utility model provides a bridging plug, it includes: the body that the lengthwise extends, body have back to first end and second hold, first end cooperatees with the setting tool, and the second end is the shutoff end, this internal first passageway that is provided with the lengthwise extension, set up the first opening on the body lateral wall, first passageway can be linked together through first opening and body outside, the jam body on the body is located to the cover, thereby it has along radial expansion shutoff oil pipe's operating condition to block up the body, set up the locking mechanism who is close to first end on the body, locking mechanism enables to block up the operating condition that radial expansion was maintain to the body, set up the anchoring mechanism of being close to the second end on the body, anchoring mechanism includes the supporter of fixing mutually with the body, and the effort can be applyed to blockking up the body to the supporter. The utility model discloses a mesh for sitting internal and external pressure balance's bridging plug when sealing is provided.

Description

A kind of bridging plug

Technical field

The utility model relates to a kind of oil pipe capping tools, particularly relates to a kind of bridging plug.

Background technology

In In Oil Field Exploration And Development process, especially adopt in the work progresss such as layer position adjustment at formation testing, underground work, oil-gas Layer transformation, formation testing, note, usually will adopt the inner chamber of special oil pipe capping tools shutoff oil pipe, and be pulled out after operation completes.

Existing plain tubing capping tools generally needs installation work cylinder on oil pipe in advance, and then will enter under capping tools in seating nipple, and therefore this capping tools needs two steps before shutoff oil pipe: first step installation work cylinder; Second step is installed and is blocked instrument; Thus job step is loaded down with trivial details, inefficiency.

The special capping tools of the oil pipe of installation work cylinder on oil pipe in advance is not needed to be bridging plug at present, it, primarily of setting and the partly composition such as anchor mechanism, locking and solution sealing mechanism, adopts wireline tool to deliver and sets, when setting, the internal diameter of setting mechanism shutoff oil pipe, shutoff is accurate.But owing to being usually in the environment of high pressure in oil well, so when bridge plugging oil pipe, bridging plug is arranged in the environment of oil well inner high voltage and causes the inner pressure imbalance with bridging plug outside of bridging plug, thus make bridging plug set the required pulling force that sets to increase, thus add task difficulty, reduce operating efficiency.

Utility model content

The bridging plug of internal and external pressure balance when the purpose of this utility model is to provide a kind of setting.

Above-mentioned purpose of the present utility model can adopt following technical proposal to realize: a kind of bridging plug, and for shutoff oil pipe, it comprises: lengthwise extend body, described body have back to first end and the second end; Described first end matches with setting tool, and described second end is shutoff end; The first passage that lengthwise extends is provided with in described body; Be arranged at the first opening on described body sidewall, described first passage is connected with described body exterior by described first opening; Be sheathed on the blockage body on described body, described blockage body has radially expansion thus the duty of shutoff oil pipe; Be arranged at the retaining mechanism near described first end on described body, described retaining mechanism can make described blockage body maintain the duty of described expanded radially; Be arranged at the anchor mechanism near described second end on described body, described anchor mechanism comprises the supporter fixed with described body, and described support physical efficiency applies active force to described blockage body; When setting, described body is pulled to move along described second end to the direction of first end, described first passage is connected with described body exterior, and described body drives described supporter to move, thus applies to described blockage body the active force making described blockage body expanded radially.

Preferably, described first opening is arranged at the position near described supporter on described second end; Be fixed by fixture and described body by described supporter, described fixture will rupture under predetermined pulling force; When described fixture fracture, described support physical efficiency moves relative to described body, thus described first opening covers by described support physical efficiency.

Preferably, it comprises: the sealing device that can seal described first opening, described sealing device comprises the first seal and the second seal, described first seal can seal the side of described first opening near described second end, and described second seal can seal the side of described first opening away from described second end.

Preferably, the inwall of described supporter is circumferentially formed near the first groove of described second end and the second groove away from described second end; Described first seal is arranged in described first groove; Described second seal is arranged in described second groove.

Preferably, the outer wall of described body is circumferentially formed with the first groove and the second groove, and described first groove is positioned at the side of described first opening near described second end, and described second groove is positioned at the side of described first opening away from described second end; Described first seal is arranged in described first groove; Described second seal is arranged in described second groove.

Preferably, described anchor mechanism also comprises: the housing being arranged at described body sidewall, is provided with the second inner chamber in described housing, and the sidewall of described housing is provided with the 5th opening and the 6th opening; Be arranged at the anchor log in described second inner chamber; Described anchor log have can stretch out described 6th opening top, the described bottom of the 5th opening and the mid portion between described top and described bottom can be stretched out, described bottom is inclined-plane back to the side of described 5th opening, and described bottom face is to the side indentation of described 5th opening; Described top is inclined-plane back to the side of described 6th opening, and described top end face is to the side indentation of described 6th opening.

Preferably, the bottom of described support physical efficiency and described anchor log abuts against, and described supporter is inclined-plane in the face of one end of described anchor log.

Preferably, it comprises: the cylinder be connected with described second end, and described cylinder is formed with the first protuberance protruding described body sidewall in the circumferential, and described first protuberance can abut against with described supporter.

Preferably, it comprises: be arranged at the second channel in described cylinder, and described second channel is connected with described first passage; Be arranged at the outlet on described cylinder, described second channel is connected with cylinder outside by described outlet; Be arranged at the 3rd seal in described second channel.

Preferably, it comprises: be sheathed on the lining on described body, and described blockage body is set on described lining.

The beneficial effect of a kind of bridging plug that the utility model provides is: the utility model achieves when use setting tool pulls body along the second end to the direction of first end, because body and supporter fix, therefore body drives supporter to move, thus apply to blockage body the active force making blockage body expanded radially, therefore blockage body radially expands thus blocks oil pipe, realization sets, because now intrinsic first passage is connected with body exterior by the first opening, therefore now the pressure of body interior is equal with the pressure of body exterior, thus avoid inside and outside differential pressure unbalanced situation when bridging plug of the prior art sets, thus achieve the object of internal and external pressure balance bridging plug when the utility model provides a kind of setting.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 a kind of structural representation of the present utility model;

Fig. 2 a kind of view of the present utility model;

Fig. 3 another kind of view of the present utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1.The utility model provides a kind of bridging plug, and for shutoff oil pipe, it comprises: lengthwise extend body 57, described body 57 have back to first end 10 and the second end 13; Described first end 10 matches with setting tool, and described second end 13 is shutoff end; The first passage 27 that lengthwise extends is provided with in described body 57; Be arranged at the first opening 33 on described body 57 sidewall, described first passage 27 is connected with described body 57 outside by described first opening 33; Be sheathed on the blockage body 73 on described body 57, described blockage body 73 has radially expansion thus the duty of shutoff oil pipe; Be arranged at the retaining mechanism near described first end 10 on described body 57, described retaining mechanism can make described blockage body 73 maintain the duty of described expanded radially; Be arranged at the anchor mechanism near described second end 13 on described body 57, described anchor mechanism comprises the supporter 59 fixed with described body 57, and described supporter 59 can apply active force to described blockage body 73; Described body 57 is pulled to move along the direction of described second end 13 to first end 10 when setting, described first passage 27 is connected with described body 57 outside, described body 57 drives described supporter 59 to move, thus applies to described blockage body 73 active force making the expanded radially of described blockage body 73.

A kind of bridging plug that the utility model provides achieves when the direction using setting tool along the second end 13 to first end 10 pulls body 57, because body 57 and supporter 59 fix, therefore body 57 drives supporter 59 to move, thus apply to blockage body 73 active force making blockage body 73 expanded radially, therefore blockage body 73 radially expands thus blocks oil pipe, realization sets, because the first passage 27 in now body 57 is connected with body 57 outside by the first opening 33, therefore now the pressure of body 57 inside is equal with the pressure of body 57 outside, thus avoid inside and outside differential pressure unbalanced situation when bridging plug of the prior art sets, thus achieve the object of internal and external pressure balance bridging plug when the utility model provides a kind of setting.

As shown in Figure 1, in the present embodiment, lengthwise extend body 57, body 57 have back to first end 10 and the second end 13; This first end 10, for being connected with setting tool, sets pulling force to be provided to this body 57 by setting tool.This second end 13 is blocking end, thus body 57 outside is not connected with body 57 inside by this second end 13.The first passage 27 that lengthwise extends is formed in body 57.

Body 57 is provided with the first opening 33, first passage 27 is connected with body 57 outside by the first opening 33.Thus make the pressure of body 57 inside when setting equal with the pressure of body 57 outside, thus avoid inside and outside differential pressure unbalanced situation when bridging plug of the prior art sets, thus achieve the object of the bridging plug of internal and external pressure balance when the utility model provides a kind of setting.In the present embodiment, this first opening 33 is arranged at the position near supporter 59 on the second end 13, in other implementations, this first opening 33 can be arranged at other positions on body 57, such as, be arranged at first end 10 on body 57 near the position of cylindrical shell.

As shown in Figure 1, in the present embodiment, near the retaining mechanism of described first end 10 on described body 57, body 57 is provided with retaining mechanism on first end 10, this retaining mechanism can make described blockage body 73 maintain the duty of expanded radially, thus the bridging plug that the utility model is provided can be maintained at the state of blocking oil pipe.

As shown in Figure 1, in the present embodiment, body 57 is provided with anchor mechanism on the second end 13, anchor mechanism can with the grappling of oil pipe phase, thus when blockage body 73 blocks oil pipe, due to this anchor mechanism and the grappling of oil pipe phase, therefore this anchor mechanism can bear the vibration of oil pipe, thus when preventing tubing vibration, blockage body 73 comes off from oil pipe.

As shown in Figure 1, in the present embodiment, this anchor mechanism comprises the supporter 59 fixed with body 57, and this supporter 59 can apply active force to blockage body 73.In the present embodiment, supporter 59 is provided with fixture 65, supporter 59 is fixed by fixture 65 and body 57, thus can not relative sliding between supporter 59 and body 57.This fixture 65 will rupture under predetermined pulling force, and when fixture 65 ruptures, supporter 59 can opposing body 57 slide, thus the first opening 33 can cover by supporter 59, thus realizes the shutoff of oil pipe.In the present embodiment, this fixture 65 is screw, but the embodiment of supporter 59 is not limited thereto, and can also have other embodiment, such as bolt.

As shown in Figure 1, in the present embodiment, anchor mechanism also comprises: the anchor log 79 being arranged at the housing 75 of body 57 sidewall, being arranged at the second inner chamber 89 in housing 75 and being arranged in the second inner chamber 89.Housing 75 has the 7th end 23 and the 8th end 25,7th end 23 is provided with the 4th opening 49,7th end 23 has the second inner face 93 towards the second inner chamber 89, and this housing 75 is formed with the 7th opening 55 on the 8th end 25, and the sidewall of housing 75 is formed with the 5th opening 51 and the 6th opening 53.

As shown in Figure 1, in the present embodiment, anchor log 79 has near the top 81 of the 7th end 23, near the bottom 85 of the 8th end 25 and the mid portion 83 between top 81 and bottom 85, bottom 85 is inclined-plane back to the side of the 5th opening 51, and bottom 85 is in the face of the side indentation of the 5th opening 51; Top 81 is inclined-plane back to the side of the 6th opening 53, and top 81 is in the face of the side indentation of the 6th opening 53.When the 5th opening 51 is stretched out in anchor log 79 bottom 85, when the 6th opening 53 is stretched out on top 81, jagged side embeds the inwall of oil pipe, thus with the grappling of oil pipe phase.When anchor log 79 bottom 85 shrinks back the second inner chamber 89 by the 5th opening 51, top 81 shrinks back the second inner chamber 89 by the 6th opening 53, and the inwall of oil pipe is left in jagged side, thus removes the state with the grappling of oil pipe phase.

As shown in Figure 1, in the present embodiment, elastic component 77 is provided with in second inner chamber 89, one end of elastic component 77 is connected with the inwall of inner cavity surface to mid portion 83, the other end is connected with mid portion 83, thus when supporter 59 extrudes mid portion 83, mid portion 83 compression elastic piece 77, makes elastic component 77 be in compressive state.In the present embodiment, this elastic component 77 is spring, and the embodiment of this elastic component 77 is not limited thereto, and can also have other embodiment, such as sheet spring.

As shown in Figure 1, in the present embodiment, supporter 59 can abut against with the bottom 85 of anchor log 79, and supporter 59 is inclined-plane in the face of one end of anchor log 79.Supporter 59 have back to front end 61 and rear end 63, front end 61 is stretched in the second inner chamber 89 through the 7th opening 55, and rear end 63 connects with cylinder 30 phase Ling.Front end 61 is inclined-plane in the face of the side of bottom 85, and in the present embodiment, supporter 59 is fixed by fixture 65 and body 57.Thus when setting tool pulls body 57 to move along the direction of the second end 13 to first end 10, body 57 drives supporter 59 to move, housing 75 moves along the 8th end 25 to the direction of the 7th end 23 under the drive of supporter 59, thus extruding blockage body 73, blockage body 73 is radially expanded, thus the internal diameter of shutoff oil pipe; When the pulling force of setting tool exceedes the active force of fixture 65, fixture 65 ruptures, body 57 can move relative to supporter 59, therefore cylinder 30 moves to and abuts against with the rear end 63 of supporter 59, thus the bottom 85 of the front end 61 extruding anchor locking member 79 of supporter 59, and move along the inclined-plane of anchor log 79 bottom 85, when front end 61 move to lean with mid portion 83 time, mid portion 83 extrudes to the direction away from body 57 by the front end 61 of supporter 59, thus make bottom 85 stretch out the 5th opening 51, thus jagged side is made to embed the inwall of oil pipe.

As shown in Figure 1, in the present embodiment, anchor mechanism also comprises connector 95, this connector 95 have back to first paragraph 97 and second segment 99, connector 95 is formed with the second protuberance 50 protruding first paragraph 97 sidewall on second segment 99; First paragraph 97 is connected with lining 66 through the 4th opening 49, and the second protuberance 50 and the second inner face 93 lean; Second segment 99 is inclined-plane in the face of the side on top 81, thus when body 57 moves along the direction of the second end 13 to first end 10, this housing 75 is under the drive of supporter 59, anchor log 79 is driven to move from the 8th end 25 to the 7th end 23, thus the inclined-plane on anchor log 79 top 81 and the inclined-plane of second segment 99 lean, and lean with mid portion 83, thus mid portion 83 is extruded to the direction away from body 57, thus make top 81 stretch out the 6th opening 53, thus jagged side is made to embed the inwall of oil pipe.And when connector 95 moves along the 8th end 25 to the direction of the 7th end 23, this housing 75 is under the drive of connector 95, move along the 8th end 25 to the 7th end 23 direction, thus the inclined-plane on the inclined-plane of connector 95 second segment 99 and anchor log 79 top 81 is separated, the inclined-plane of the front end 61 of supporter 59 and the inclined-plane of anchor log 79 bottom 85 are separated, mid portion 83 moves to the direction near body 57 under the effect of the elastic force of elastic component 77, thus make bottom 85 shrink back the second inner chamber 89 by the 5th opening 51, top 81 shrinks back the second inner chamber 89 by the 6th opening 53, thus the inwall of oil pipe is left in jagged side, thus remove the state fixed with oil pipe.

As shown in Figure 1, in the present embodiment, the cylinder 30 be connected with the second end 13, cylinder 30 is formed with the first protuberance 47 protruding body 57 sidewall in the circumferential, when fixture 65 ruptures, this cylinder can move relative to supporter 59 with body 57, thus this first protuberance 47 can abut against with supporter 59, thus supporter 59 is moved with body 57.

As shown in Figure 1, in the present embodiment, the blockage body 73 on body 57 is sheathed on, blockage body 73 has radially expansion thus the duty of shutoff oil pipe, thus carries out shutoff to oil pipe, when deblocking bridging plug, blockage body 73 radially shrinks, thus realizes deblocking.In the present embodiment, the material of this blockage body 73 is rubber.

The sealing device of the first opening 33 can be sealed, sealing device comprises the first seal 67 and the second seal 69, first seal 67 can seal the side of the first opening 33 near the second end 13, second seal 69 can seal the side of the first opening 33 away from the second end 13, thus when the first opening 33 covers by supporter 59, after realizing the shutoff of oil pipe, sealing device can seal further to the first opening 33, thus the first passage 27 in body 57 is separated with body 57 outside, thus the inner chamber of oil pipe is carried out shutoff.

As shown in Figure 1, in the present embodiment, the inwall of supporter 59 is circumferentially formed near the first groove 39 of the second end 13 and the second groove 41 away from the second end 13; First seal 67 is arranged in the first groove 39; Second seal 69 is arranged in the second groove 41.As shown in Figure 2, when body 57 fixes with supporter 59, first passage 27 is by the intracavity inter-connection of the first opening 33 with oil pipe, and the pressure now in body 57 is equal with the pressure outside body 57, thus inside and outside differential pressure unbalanced situation when avoiding the setting of bridging plug in prior art; When fixture 65 ruptures, supporter 59 can opposing body 57 slide, and as shown in Figure 3, the first opening 33 can cover by supporter 59, thus realizes the shutoff of oil pipe.In the present embodiment, this first seal 67 and the second seal 69 are O type circle, but embodiment is not limited thereto, and can also have other embodiment, such as airtight and watertight padding.

In the present embodiment, the outer wall of body 57 is circumferentially formed with the first groove 39 and the second groove 41, first groove 39 is positioned at the side of the first opening 33 near the second end 13, and the second groove 41 is positioned at the side of the first opening 33 away from the second end 13; First seal 67 is arranged in the first groove 39; Second seal 69 is arranged in the second groove 41.In the present embodiment, this first seal 67 and the second seal 69 are O type circle, but embodiment is not limited thereto, and can also have other embodiment, such as airtight and watertight padding.

As shown in Figure 1, in the present embodiment, be sheathed on the lining 66 on body 57, blockage body 73 is set on lining 66.This lining 66 for reducing the thickness of blockage body 73, thus by reduce the thickness of blockage body 73 reduce blockage body 73 radially expands required for set pulling force, thus reach reduction further and set the object of pulling force.This lining 66 has the free end 74 deviating from supporter 59, this free end 74 is connected with block 58, block 58 has the first end face 70 in the face of pushing away body 64, thus during deblocking, this block 58 by this first end face 70 with push away body 64 and lean, thus make to push away body 64 and apply active force by this block 58 pairs of linings 66.

As shown in Figure 1, in the present embodiment, what lining 66 is arranged with close free end 74 pushes away body 64, this pushes away body 64 and is connected with cylindrical shell near one end of free end 74, this connected mode can be welding, also can be formed in one, in the present embodiment, this pushes away body 64 near one end radial contraction of free end and forms serrated end, and this serrated end to stretch in resettlement section 35 thus is threaded mutually with cylindrical shell.During deblocking, direction along the second end 13 to first end 10 pulls cylindrical shell, this cylindrical shell pulls and pushes away body 64 and move, pushing away body 64 pulls lining 66 to move along the direction of the second end 13 to first end 10 by block 58, thus make blockage body 73 radial contraction and realize deblocking, and remove the anchoring states of anchor mechanism and oil pipe.

As shown in Figure 1, in the present embodiment, be arranged at the retaining mechanism be connected on body 57 sidewall and with blockage body 73, retaining mechanism comprises locking member, and retaining mechanism has locking member restriction body 57 and allows body 57 along the 4th duty of the direction movement of the second end 13 to first end 10 along the 3rd duty of the direction movement of first end 10 to the second end 13 and locking member.

As shown in Figure 1, in the present embodiment, retaining mechanism also comprises the salvaging part 76 be arranged on body 57 sidewall, salvage part 76 have back to the 3rd end 15 and the 4th end 17; Be arranged at the shoulder 78 in the 3rd end 15, this shoulder 78 for matching with fishing tool, thus pulls the salvaging direction of part 76 along the 4th end 17 to the 3rd end 15 to move, thus provides interior bridging plug to carry out deblocking to the utility model.Be arranged at the curved point on the 4th end 17, curved point is segmented into the Part I 80 near the 3rd end 15 and the Part II 82 near the 4th end 17 by salvaging part 76, is formed with a bent angle between the bearing of trend of Part I 80 and the bearing of trend of Part II 82.

As shown in Figure 1, in the present embodiment, retaining mechanism also comprises the solution sealing 86 be arranged on body 57 sidewall, separate sealing 86 comprise back to five terminal 19 and the 6th end 21; 6th end 21 is connected with the head end 54 of cylindrical shell 52.And in the present embodiment, this connected mode is for being threaded, but this connected mode is not limited thereto, and can also have other embodiment, such as, weld.Be arranged at the first inner chamber 87 separated in sealing 86; Be arranged at the 3rd opening 37 on five terminal 19; First inner chamber 87 is connected with the 3rd opening 37; Five terminal 19 has the first inner face 91 towards the first inner chamber 87; 4th end 17 stretches in the first inner chamber 87 by the 3rd opening 37, salvages part 76 and has Part II 82 and be fixed in the first inner chamber 87 away from the 5th duty of the side of the first inner face 91 and Part II 82 the 6th duty against the first inner face 91.In the present embodiment, the Part II 82 of this salvaging part 76 is fixed on the side away from the first inner face 91 in the first inner chamber 87 by the first shear pin 84, fix with solution sealing 86 to make salvaging part 76, when deblocking, pull and salvage part 76, rupture to make the first shear pin 84, now salvage part 76 to be cancelled with the fixing of solution sealing 86, under the effect of pulling force, salvage the direction of part 76 along the 4th end 17 to the 3rd end 15 in the first inner chamber 87 to move, when the bent angle salvaging part 76 moves to the 3rd opening 37, salvage the Part II 82 of part 76 against the first inner face 91, thus drive solution sealing 86 to move.When salvaging part 76 and being in the 5th duty, separate sealing 86 pairs of retaining mechanisms and apply active force, when salvaging part 76 and being converted to the 6th duty by the 5th duty, separate sealing 86 and cancel the active force that retaining mechanism is applied.

As shown in Figure 1, in the present embodiment, Part II 82 has the surface in the face of body 57, surface has been recessed to form the 3rd groove 43 towards the direction away from body 57, locking member comprises the first locking member 88 and the second locking member 12 be arranged at movably in the 3rd groove 43, first locking member 88 has in the face of the first inner surface of body 57 and the first external surface back to body 57, first inner surface has been recessed to form the 4th groove towards away from body 57 direction, and the second locking member 12 has in the face of the second inner surface of body 57 and the second external surface back to body 57; First external surface and the second contacted inner surfaces lean on; Second external surface and the 3rd groove 43 lean in the face of the sidewall of body 57, and the sidewall of body 57 protrudes towards the direction away from body 57 and is formed with the first projection, and the first projection can be contained in the 4th groove.

As shown in Figure 1, in the present embodiment, the first external surface is an inclined-plane, is formed with an oblique angle between the direction of inclined-plane and the second end 13 to first end 10, and oblique angle is acute angle, second inner surface is inclined-plane, thus when body 57 moves along the direction of the second end 13 to first end 10, produce between first external surface of the first locking member 88 and the second inner surface of the second locking member 12 and slide, because be formed with an oblique angle between the direction of this first external surface and the second end 13 to first end 10, and oblique angle is acute angle, thus body 57 can be moved freely, when body 57 moves along the direction of first end 10 to the second end 13, produce between first external surface of the first locking member 88 and the second inner surface of the second locking member 12 and slide, because be formed with an oblique angle between the direction of this first external surface and the second end 13 to first end 10, and oblique angle is acute angle, thus when body 57 moves along the direction of first end 10 to the second end 13, produce between this first locking member 88 and second locking member 12 and extrude, and this first locking member 88 and the second locking member 12 are contained in the 3rd groove 43, 3rd groove 43 is fixed by the first shear pin 84 by solution sealing 86, and the first projection of body 57 is contained in the 4th groove, thus body 57 is limited along the movement in the direction of first end 10 to the second end 13.

As shown in Figure 1, in the present embodiment, retaining mechanism also comprises cylindrical shell 52, this cylindrical shell 52 comprises the head end 54 back to blockage body 73 and the tail end 56 in the face of blockage body 73, this cylindrical shell 52, head end 56 with separate the 6th end 21 of sealing 86 and be connected, tail end 56 with push away body 64 and be connected.In the present embodiment, this connected mode is for being threaded, but this connected mode is not limited thereto, and can also have other embodiment, such as, weld.When pulling cylindrical shell 52 along the direction of the second end 13 to first end 10, cylindrical shell pulls and pushes away body 64 and move along the direction of the second end 13 to first end 10.The second end face 72, second end face 72 that cylindrical shell has in the face of pushing away body 64 is recessed to form to deviating from the direction pushing away body 64 resettlement section 35 accommodating block 58.

When setting tool pulls body 57 to move along the direction of the second end 13 to first end 10, retaining mechanism is in the 4th duty, retaining mechanism is to body 57 not restriction, thus body 57 can freely move from the direction of the second end 13 to first end 10, thus first supporter 59 compresses blockage body 73, blockage body 73 is made radially to expand thus block oil pipe inner chamber; Then when setting pulling force and exceeding the predetermined pull of fixture 65, fixture 65 ruptures, along with body 57 continues mobile along the direction of the second end 13 to first end 10, cylinder 30 moves to the position of blockage body 73 thus leans with blockage body 73, thus open anchor log 79, anchor log 79 and tube inner wall are fixed; After setting tool and body 57 divide, retaining mechanism goes to the 3rd duty by the 4th duty, thus restriction body 57 moves along the direction of first end 10 to the second end 13, thus the state making blockage body 73 block oil pipe is maintained, and anchor log 79 is maintained with the stationary state of oil pipe.

As shown in Figure 1, in the present embodiment, salvaging part 76 is sheathed on the sidewall of body 57; Separating sealing 86 is sheathed on the sidewall of body 57; 3rd groove 43 is ring-type; First locking member 88 comprises first and second; First locking member 88 has first and second the 7th duty and first abutted against in the 3rd groove 43 and second the 8th duty be separated in the 3rd groove 43; When the first locking member 88 is in the 7th duty, the sidewall back to body 57 of first and second sidewall back to body 57 form cone shape first external surface, first external surface has in the face of the end face of first end 10 and the bottom surface back to first end 10, and top surface area is greater than base area; Second locking member 12 comprises the 3rd and the 4th; Second locking member 12 has the 3rd and the 4th the 9th duty and the 3rd abutted against in the 3rd groove 43 and the 4th the tenth duty be separated in the 3rd groove 43; When the second locking member 12 is in the 9th duty, the inwall in the face of the first locking member 88 and the 4th inwall in the face of the first locking member 88 of the 3rd form cone shape second inner surface.

During deblocking, after using fishing tool to act on the shoulder 78 salvaging part 76, fishing tool pulls salvages part 76, salvaging part 76 is made to be converted to the 6th duty by the 5th duty, first shear pin 84 ruptures, now salvage part 76 to be cancelled with the fixing of solution sealing 86, thus in the 3rd groove 43, the lock-out state of the first locking member 88 and the second locking member 12 pairs of bodies 57 is cancelled, thus removed locking member to the locking of body 57.Thus when salvaging part 76 and moving to the direction of the 3rd end 15 along the 4th end 17, salvage part 76 and pull solution sealing 86, separate sealing 86 and pull cylindrical shell 52, cylindrical shell 52 pulls and pushes away the direction of body 64 along the 4th end 17 to the 3rd end 15 and move, pushing away body 64 pulls lining 66 to move along the direction of the second end 13 to first end 10 by block 58, thus make blockage body 73 radial contraction and realize deblocking, and lining 66 pulls the direction of connector 95 along the 4th end 17 to the 3rd end 15 to move, thus the second segment 99 of connector 95 is separated with the top 81 of anchor log 79, and the bottom 85 of anchor log 79 and the front end 61 of supporter 59 are separated, thus anchor log 79 is separated with the inwall of oil pipe, thus realize deblocking.

As shown in Figure 1, in the present embodiment, the releaser 28 be connected with body 57 first end 10, this releaser 28 can be broken by scheduled pulling force, this releaser 28 is for being connected with setting tool, thus setting tool is connected with body 57, when setting, setting tool pulls releaser 28 to drive body 57 to move along the direction of the second end 13 to first end 10, supporter 59 is made to open anchor log 79, blockage body 73 expanded radially shutoff oil pipe, when setting pulling force and being greater than predetermined pulling force, releaser 28 is pulled off, thus body 57 and setting tool are separated, but now retaining mechanism restriction body 57 moves along the direction of first end 10 to the second end 13, thus make anchor log 79 be maintained at open mode, blockage body 73 is maintained at the state of shutoff oil pipe.

As shown in Figure 1, in the present embodiment, be provided with second channel 29 in cylinder 30, this second channel 29 is connected with first passage 27.Cylinder 30 is provided with outlet 32, this second channel 29 is connected with cylinder 30 outside by outlet 32, the 3rd seal 71 is provided with in second channel 29, 3rd seal 71 has the 12 duty stoping the fluid in second channel 29 to be flowed out by outlet 32 with the fluid allowed in second channel 29 by the 11 duty that outlet 32 is flowed out, thus when needing the bridging plug provided the utility model to carry out deblocking, first enter in body 57 under special unsealing tool is in first passage 27, the 3rd seal 71 is removed again by second channel 29, thus make the gas in first passage 27 by exporting 32 outflows, thus ensure that the pressure balance inside and outside body 57, thus be conducive to the deblocking of bridging plug, deblocking is made to become easy.

The foregoing is only several embodiment of the present utility model, those skilled in the art can carry out various change or modification to the utility model embodiment according to content disclosed in application documents and not depart from spirit and scope of the present utility model.

Claims (10)

1. a bridging plug, for shutoff oil pipe, it is characterized in that, it comprises:

Lengthwise extend body, described body have back to first end and the second end; Described first end matches with setting tool, and described second end is shutoff end; The first passage that lengthwise extends is provided with in described body; Be arranged at the first opening on described body sidewall, described first passage is connected with described body exterior by described first opening;

Be sheathed on the blockage body on described body, described blockage body has radially expansion thus the duty of shutoff oil pipe;

Be arranged at the retaining mechanism near described first end on described body, described retaining mechanism can make described blockage body maintain the duty of described expanded radially;

Be arranged at the anchor mechanism near described second end on described body, described anchor mechanism comprises the supporter fixed with described body, and described support physical efficiency applies active force to described blockage body;

When setting, pull described body to move along described second end to the direction of first end, described first passage keeps being connected with described body exterior.

2. bridging plug according to claim 1, is characterized in that: described first opening is arranged at the position near described supporter on described second end; Be fixed by fixture and described body by described supporter, described fixture will rupture under predetermined pulling force; When described fixture fracture, described support physical efficiency moves relative to described body, thus described first opening covers by described support physical efficiency.

3. bridging plug according to claim 2, it is characterized in that, it comprises: the sealing device that can seal described first opening, described sealing device comprises the first seal and the second seal, described first seal can seal the side of described first opening near described second end, and described second seal can seal the side of described first opening away from described second end.

4. bridging plug according to claim 3, is characterized in that: the inwall of described supporter is circumferentially formed near the first groove of described second end and the second groove away from described second end; Described first seal is arranged in described first groove; Described second seal is arranged in described second groove.

5. bridging plug according to claim 3, it is characterized in that: the outer wall of described body is circumferentially formed with the first groove and the second groove, described first groove is positioned at the side of described first opening near described second end, and described second groove is positioned at the side of described first opening away from described second end; Described first seal is arranged in described first groove; Described second seal is arranged in described second groove.

6. bridging plug according to claim 1, is characterized in that: described anchor mechanism also comprises: the housing being arranged at described body sidewall, is provided with the second inner chamber in described housing, and the sidewall of described housing is provided with the 5th opening and the 6th opening; Be arranged at the anchor log in described second inner chamber; Described anchor log have can stretch out described 6th opening top, the described bottom of the 5th opening and the mid portion between described top and described bottom can be stretched out, described bottom is inclined-plane back to the side of described 5th opening, and described bottom face is to the side indentation of described 5th opening; Described top is inclined-plane back to the side of described 6th opening, and described top end face is to the side indentation of described 6th opening.

7. bridging plug according to claim 6, is characterized in that: the bottom of described support physical efficiency and described anchor log abuts against, and described supporter is inclined-plane in the face of one end of described anchor log.

8. bridging plug according to claim 7, is characterized in that, it comprises: the cylinder be connected with described second end, and described cylinder is formed with the first protuberance protruding described body sidewall in the circumferential, and described first protuberance can abut against with described supporter.

9. bridging plug according to claim 8, is characterized in that, it comprises: be arranged at the second channel in described cylinder, and described second channel is connected with described first passage; Be arranged at the outlet on described cylinder, described second channel is connected with cylinder outside by described outlet; Be arranged at the 3rd seal in described second channel.

10. bridging plug according to claim 1, is characterized in that, it comprises: be sheathed on the lining on described body, and described blockage body is set on described lining.