CN2693941Y - Hydraulic compression type hydraulic undet packer capable of well cleanup - Google Patents
Hydraulic compression type hydraulic undet packer capable of well cleanup Download PDFInfo
- Publication number
- CN2693941Y CN2693941Y CN 200420047845 CN200420047845U CN2693941Y CN 2693941 Y CN2693941 Y CN 2693941Y CN 200420047845 CN200420047845 CN 200420047845 CN 200420047845 U CN200420047845 U CN 200420047845U CN 2693941 Y CN2693941 Y CN 2693941Y
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- piston
- sets
- central tube
- setting
- ring
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Abstract
The utility model discloses a hydraulic compression type hydraulic releaseing packer capable of cleaning wells for oilfield wells, wherein, both ends of a central tube are provided with an upper joint and a lower joint, the lower part of the central tube is sheathed with a plurality of glue canisters, and the upper part of the central tube is provided with a setting and releasing mechanism. The setting and releasing mechanism is provided with a plurality of ring-shaped setting pistons and ring-shaped releasing pistons; each piston is matched with a corresponding hydraulic cylinder, wherein, a through hole of hydraulic cylinder medium of a setting cylinder is arranged on the tube wall of the central tube; a through hole of the releasing hydraulic cylinder is arranged on a combined sleeve canister of a setting and releasing structure. A setting moving member is formed by a movable part of each setting hydraulic cylinder mechanism and a pressure bearing seat, and is used for downward pressing the glue canister to make the glue canister in the radial expanding state. In setting, a locking structure and a locking fitting part are clamped together; a proof-release part fixedly connected with the releasing piston can lock the clamping state. The setting rate of the packer in secondary well cleaning is high, the well cleaning path is big, the required setting pressure is low, and the use of the utility model is convenient.
Description
Technical field
The utility model relates to a kind of oil field well device, is a kind of waterpower compression washing well hydraulic pressure deblocking packer that is used for the oil field well specifically.
Background technology
The extensive waterpower compression washing well packer that adopts in oil field comprises central tube and the last lower contact that is installed in the central tube two ends at present, and be provided with the inner passage that is used for well-flushing, its deblocking adopts the mode of carrying oil pipe, cutting off shear pin to realize, during use packer is serially connected on the oil pipe of well, set then, between the oil pipe of well and sleeve pipe, form the packing zone.The well-flushing switch was not closed completely when the defective one of this packer was the secondary well-flushing, and the rate that sets is low; The 2nd, the well-flushing passage is narrow and small, during well-flushing resistance to water-flow big, flow velocity is low, influences well washing effect; The 3rd, the required pressure height that sets can't realize that cock sets; The 4th, longer, use inconvenience.
The utility model content
For overcoming the above-mentioned defective of prior art, the utility model provides a kind of waterpower compression washing well hydraulic pressure deblocking packer, the rate that the sets height during this packer secondary well-flushing, and the well-flushing passage is big, and the required pressure that sets is low, and easy to use.
The utility model realizes that the technical scheme of above-mentioned purpose is: a kind of waterpower compression washing well hydraulic pressure deblocking packer, comprise central tube and be installed in the top connection and the lower contact at central tube two ends respectively, described central tube bottom is with the packing element combination that is made of some packing elements that distribute up and down, top is provided with to set separates sealing mechanism, described packing element combination top is a Pressure Block, the concentricity pipe of this Pressure Block is slidingly matched, its lower surface contacts with the upper surface of packing element combination, described setting separated sealing mechanism and is provided with several annulars and sets piston and annular deblocking piston, and be provided with the hydraulic cylinder that cooperates with each piston, described each piston is enclosed within on the central tube respectively, the corresponding site of described central tube tube wall constitutes the inwall of the hydraulic cylinder that cooperates with described each piston, set hydraulic cylinder that piston cooperates for setting hydraulic cylinder with described, respectively setting hydraulic cylinder together constitutes one and sets hydraulic mechanism with the corresponding piston that sets, the through hole of its feed flow piezodielectric turnover is opened on the described central tube tube wall, and be positioned at the top that sets movable part that this sets hydraulic mechanism, described set hydraulic mechanism set that movable part sets piston by it or the part that sets in the hydraulic cylinder constitutes, be slidingly matched with described central tube, respectively setting movable part interconnects, and connection Pressure Block, together form with described Pressure Block and to set mobile member, the described mobile member that sets is provided with latch-up structure, be fixedly connected with the lock fit part supporting on the described central tube with described latch-up structure, under the state of setting, described latch-up structure is connected together with described lock fit part, the hydraulic cylinder of described deblocking piston is the deblocking hydraulic cylinder, the through hole of its feed flow piezodielectric turnover is opened on its outer wall, and be positioned at the top of described deblocking piston, described deblocking piston is slidingly matched with described central tube, and be with the anti-part of separating, under the state of setting, describedly anti-separate part and lock the clamping state of described latch-up structure with described locking piece.
The utility model also comprises inceptive positioning device, described inceptive positioning device comprises positioning mounting, location moving member and location shear pin, described positioning mounting is fixedly mounted on the central tube, described location moving member is fixedly mounted on and sets on the mobile member, and described shear pin connects described location moving member and positioning mounting.
Operating principle of the present utility model is: when setting, water under high pressure in the well tubing enters and sets hydraulic cylinder by setting through hole on the hydraulic cylinder, press down the movable part that sets that sets hydraulic mechanism, make and set mobile member integral body and move down, each packing element in the combination of Pressure Block axial compression packing element, make each packing element distortion, produce radial dilatation, its outer rim is pressed internal surface of sleeve pipe, with the sealing of the circular passage between sleeve pipe and the oil pipe, to realize setting, the latch-up structure and the lock fit part that set simultaneously on the mobile member are connected together, and prevented separating the part locking, packer is able to the long-term state that sets that keeps; During deblocking, water under high pressure in the circular passage enters the deblocking hydraulic cylinder by the through hole on the deblocking hydraulic cylinder, press down the deblocking piston, drive and prevent that separating part moves down, and removes the locking to latch-up structure and locking piece clamping state, under the acting in conjunction of packing element and water, set mobile member and move on the whole, the axial compression that acts in the packing element combination is eliminated, and each packing element restores to the original state, releasing is able to by the circular passage between sleeve pipe and the oil pipe water under high pressure to the sealing of circular passage.
The effect of described inceptive positioning device is fixedly to set mobile member to make it and can not move before setting for the first time, damages packing element because of the packing element compressive deformation when avoiding oil pipe to go into the well.When setting for the first time, positioning mounting and location moving member relatively move, and shear pin is cut off.
Because the utility model is realized setting by the mode of Pressure Block axial compression packing element, the elastic deformation of utilizing packing element has improved the rate of setting tightly with the circular passage sealing, has guaranteed to set effect; Because the utility model is separated the packing element of being honored as a queen with there being bigger annular gap between the sleeve pipe, resistance to water-flow is little, and stream has improved well washing effect at a high speed; Because setting mobile member can be provided with a plurality of hydraulic cylinders, under the less situation of hydraulic pressure, also can produce bigger pressure to packing element, therefore can adopt cock to set, greatly reduced work operations amount and operating cost; Because the well-flushing water circulation road is formed by the gap between packing element and the sleeve pipe, do not take the packer inner space, the length and the diameter of packer are all reduced, the length and the volume of packer have been reduced, made things convenient for use, particularly made things convenient at casing deformation well etc. and used in to the more well of packer volume restrictions; In addition, this packer also has long application life, still can guarantee to set reliably effect under the situation that sets deblocking repeatedly.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
The embodiment that accompanying drawing provides mainly comprises top connection 1, central tube 2, upper piston 3, cylinder cap 4, three shear pins 5, middle piston 6, adjustable ring 7, elastic ferrule 8, eight pins 9, sets ring 10, anti-ly overcome difficulties 11, interstage sleeve 12, spring 13, lower piston 14, baffle ring 15, Pressure Block 16, go up packing element 17.1, upper isolating ring 18.1, middle packing element 19, lower isolating ring 18.2, lower rubber cylinder 17.2 and lower contact 20 and constitute.
Common described central tube, top connection, upper piston, cylinder cap, middle piston, adjustable ring, elastic ferrule, set ring, anti-overcome difficulties, interstage sleeve, lower piston, baffle ring, Pressure Block, go up packing element, upper isolating ring, middle packing element, lower isolating ring, lower rubber cylinder and lower contact and all adopt rotational symmetry structure.
In the embodiment that accompanying drawing provides, the described quantity that sets hydraulic mechanism is 3, sets piston and 3 corresponding to 3 and sets hydraulic cylinder, according to actual needs, the hydraulic mechanism that sets of other number can be set also, for example 2,4 or the like.
A cylindrical body is extended in described top connection downwards, with the part tube wall of described central tube together constitute cooperate with described upper piston on set hydraulic cylinder, described upper piston is slidingly matched with central tube for setting piston, constitutes the movable part that sets that the place sets hydraulic mechanism.
Described upper piston is provided with the step-like cylindrical body of downward extension, this cylindrical body is connected into one with the upwardly extending cylindrical body of described Pressure Block by adjustable ring, constitute combined sleeve, all adopt thread connection between the same piston cylindrical body of described adjustable ring and the Pressure Block cylindrical body, by changing the precession degree of depth of thread connection, can regulate the total length of combined sleeve.
Described cylinder cap is positioned at the top of described combined sleeve inner space, and seals with combined sleeve and central tube, constitutes described positioning mounting.
Described upper piston, middle piston are for setting piston, lay respectively at the described combined sleeve inner space of described cylinder cap upper and lower, be slidingly matched with described central tube, constitute the place and set the movable part that sets in the hydraulic mechanism, the appropriate section of described combined sleeve, cylinder cap and central tube constitute with described middle piston cooperate in set hydraulic cylinder.
The top of piston is enclosed within described cylinder cap bottom in described, constitute described location moving member, described three shear pins evenly distribute, radially be screwed in described middle piston top, overlap on the described cylinder cap, together constitute described inceptive positioning device with described cylinder cap and middle piston, wherein said cylinder cap constitutes described positioning mounting.
Piston bottom outside screw connects the lower end of described upper piston cylindrical body in described, and inside thread connects the upper end of described elastic ferrule, and described upper piston, middle piston, adjustable ring, elastic ferrule and Pressure Block together constitute the described mobile member that sets.
Leave the space between the concentricity pipe of described elastic ferrule, its lower end is divided into some shell fragments, the shell fragment inboard is provided with annular projection, constitute described latch-up structure, described setting encircled the combined sleeve inboard that is arranged in described piston bottom, by equally distributed described eight dowel fixes on described central tube, its middle part is provided with and the supporting annular projection of described elastic ferrule, constitute described lock fit part, move when realizing setting when setting mobile member, the described ring that sets is inserted in described elastic ferrule inboard, and the annular projection at its middle part is stuck in the inside of the annular projection of described elastic ferrule lower end, stops to set on the mobile member and moves.
Described interstage sleeve is enclosed within the described bottom that sets ring, cooperate with setting czermak space, the flange shape ring baffle retaining of its upper end is on described anti-overcoming difficulties, described lower piston is enclosed within on the described baffle ring, with the baffle ring matched in clearance, the extended cylindrical body in its top is enclosed within on the described interstage sleeve, be threaded with described interstage sleeve, its lower end surface contacts with the flange shape ring baffle of described baffle ring lower end, in the space of described spring between described combined sleeve and described lower piston cylindrical body, its two ends contact with lower piston with described anti-overcoming difficulties respectively, and described Pressure Block is slidingly matched with described central tube.
Described lower piston is for setting piston, the appropriate section of described Pressure Block and central tube constitutes the following hydraulic cylinder that sets that cooperates with lower piston, described Pressure Block constitutes this movable part that sets that sets hydraulic mechanism, enter down the water that sets hydraulic cylinder when setting Pressure Block is produced down force pressure, Pressure Block is moved down.
Described lower piston also constitutes described deblocking piston, described combined sleeve, middle piston, central tube, elastic ferrule constitutes described deblocking hydraulic cylinder with the appropriate section that sets ring, the through hole of this deblocking hydraulic cylinder is positioned on the described adjustable ring, when the reverse water filling of well, water under high pressure enters the deblocking hydraulic cylinder from this through hole, press down described lower piston, lower piston drives anti-overcoming difficulties and together moves down, make anti-overcoming difficulties break away from described elastic ferrule, setting mobile member moves under the effect of the pressure of packing element and water generates, on when moving on the elastic ferrule shell fragment make elastic ferrule and set ring and separate to excurvation.
Described packing element, upper isolating ring, middle packing element, lower isolating ring and the lower rubber cylinder gone up arranged up and down in proper order.
Claims (4)
1. waterpower compression washing well hydraulic pressure deblocking packer, comprise central tube and be installed in the top connection and the lower contact at central tube two ends respectively, it is characterized in that described central tube bottom is with the packing element combination that is made of some packing elements that distribute up and down, top is provided with to set separates sealing mechanism, described packing element combination top is a Pressure Block, the concentricity pipe of this Pressure Block is slidingly matched, its lower surface contacts with the upper surface of packing element combination, described setting separated sealing mechanism and is provided with several annulars and sets piston and annular deblocking piston, and be provided with the hydraulic cylinder that cooperates with each piston, described each piston is enclosed within on the central tube respectively, the corresponding site of described central tube tube wall constitutes the inwall of the hydraulic cylinder that cooperates with described each piston, set hydraulic cylinder that piston cooperates for setting hydraulic cylinder with described, respectively setting hydraulic cylinder together constitutes one and sets hydraulic mechanism with the corresponding piston that sets, the through hole of its feed flow piezodielectric turnover is opened on the described central tube tube wall, and be positioned at the top that sets movable part that this sets hydraulic mechanism, described set hydraulic mechanism set that movable part sets piston by it or the part that sets in the hydraulic cylinder constitutes, be slidingly matched with described central tube, respectively setting movable part interconnects, and connection Pressure Block, together form with described Pressure Block and to set mobile member, the described mobile member that sets is provided with latch-up structure, be fixedly connected with the lock fit part supporting on the described central tube with described latch-up structure, under the state of setting, described latch-up structure is connected together with described lock fit part, the hydraulic cylinder of described deblocking piston is the deblocking hydraulic cylinder, the through hole of its feed flow piezodielectric turnover is opened on its outer wall, and be positioned at the top of described deblocking piston, described deblocking piston is slidingly matched with described central tube, and be fixedly connected with the anti-part of separating, under the state of setting, describedly anti-separate part and lock the clamping state of described latch-up structure with described locking piece.
2. waterpower compression washing well hydraulic pressure deblocking packer as claimed in claim 1, it is characterized in that also comprising inceptive positioning device, described inceptive positioning device comprises positioning mounting, location moving member and location shear pin, described positioning mounting is fixedly mounted on the central tube, described location moving member is fixedly mounted on and sets on the mobile member, and described shear pin connects described location moving member and positioning mounting.
3. waterpower compression washing well hydraulic pressure deblocking packer as claimed in claim 2, it is characterized in that comprising cylinder cap, middle piston, adjustable ring, elastic ferrule, pin, set ring, anti-overcoming difficulties, interstage sleeve, spring, lower piston, baffle ring and Pressure Block, described upper piston, middle piston and lower piston are the described piston that sets, described lower piston also constitutes described deblocking piston simultaneously, the quantity of described packing element is 3, be respectively packing element, middle packing element and lower rubber cylinder, described central tube, top connection, upper piston, cylinder cap, middle piston, adjustable ring, elastic ferrule, set ring, anti-overcoming difficulties, interstage sleeve, lower piston, baffle ring, Pressure Block, last packing element, upper isolating ring, middle packing element, lower isolating ring, rotational symmetry structure is all adopted in lower rubber cylinder and lower contact, a cylindrical body is extended in described top connection downwards, with the part tube wall of described central tube together constitute cooperate with described upper piston on set hydraulic cylinder, described upper piston and central tube are slidingly matched, constitute the movable part that sets that the place sets hydraulic mechanism, described upper piston is provided with the step-like cylindrical body of downward extension, this cylindrical body is connected into one with the upwardly extending cylindrical body of described Pressure Block by adjustable ring, constitute combined sleeve, all adopt thread connection between the same piston cylindrical body of described adjustable ring and the Pressure Block cylindrical body, described cylinder cap is positioned at the top of described combined sleeve inner space, and with the sealing of combined sleeve and central tube, constitute described positioning mounting, piston is positioned at the described combined sleeve inner space of described cylinder cap below in described, be slidingly matched with described central tube, the formation place sets the movable part that sets in the hydraulic mechanism, described combined sleeve, the appropriate section of cylinder cap and central tube constitute with described middle piston cooperate in set hydraulic cylinder, the top of piston is enclosed within described cylinder cap bottom in described, constitute described location moving member, described three shear pins evenly distribute, radially be screwed in described middle piston top, be enclosed within on the described cylinder cap, together constitute described inceptive positioning device with described cylinder cap and middle piston, wherein said cylinder cap constitutes described positioning mounting, piston bottom outside screw connects the lower end of described upper piston cylindrical body in described, inside thread connects the upper end of described elastic ferrule, described upper piston, middle piston, adjustable ring, elastic ferrule and Pressure Block together constitute the described mobile member that sets, leave the space between the concentricity pipe of described elastic ferrule, its lower end is divided into some shell fragments, the shell fragment inboard is provided with annular projection, constitute described latch-up structure, described setting encircled the combined sleeve inboard that is arranged in described piston bottom, by equally distributed described eight dowel fixes on described central tube, its middle part is provided with and the supporting annular projection of described elastic ferrule, constitute described lock fit part, under the state of setting, the described ring that sets is inserted in described elastic ferrule inboard, the annular projection at its middle part is stuck in the inside of the annular projection of described elastic ferrule lower end, described interstage sleeve is enclosed within the described bottom that sets ring, cooperate with setting czermak space, the flange shape ring baffle retaining of its upper end is on described anti-overcoming difficulties, described lower piston is enclosed within on the described baffle ring, with the baffle ring matched in clearance, the extended cylindrical body in its top is enclosed within on the described interstage sleeve, be threaded with described interstage sleeve, its lower end surface contacts with the flange shape ring baffle of described baffle ring lower end, in the space of described spring between described combined sleeve and described lower piston cylindrical body, its two ends contact with lower piston with described anti-overcoming difficulties respectively, described Pressure Block is slidingly matched with described central tube, the appropriate section of described Pressure Block and central tube constitutes the following hydraulic cylinder that sets that cooperates with lower piston, described Pressure Block constitutes this movable part that sets that sets hydraulic mechanism, enter down the water that sets hydraulic cylinder when setting Pressure Block is produced down force pressure, Pressure Block is moved down, described combined sleeve, middle piston, central tube, elastic ferrule constitutes the described deblocking hydraulic cylinder that cooperates with described lower piston with the appropriate section that sets ring, and the through hole of this deblocking hydraulic cylinder is positioned on the described adjustable ring.
4. waterpower compression washing well hydraulic pressure deblocking packer as claimed in claim 1, it is characterized in that also comprising rotational symmetric upper isolating ring and lower isolating ring, described packing element, upper isolating ring, middle packing element, lower isolating ring and the lower rubber cylinder gone up arranged up and down in proper order, the quantity of described shear pin is 8, and the quantity of described pin is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047845 CN2693941Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic compression type hydraulic undet packer capable of well cleanup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047845 CN2693941Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic compression type hydraulic undet packer capable of well cleanup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2693941Y true CN2693941Y (en) | 2005-04-20 |
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ID=34776174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420047845 Expired - Fee Related CN2693941Y (en) | 2004-04-01 | 2004-04-01 | Hydraulic compression type hydraulic undet packer capable of well cleanup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2693941Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362486A (en) * | 2012-04-05 | 2013-10-23 | 中国石油天然气股份有限公司 | Digital underground separate-layer water injection measuring and adjusting process pipe column and operation method thereof |
| CN106437605A (en) * | 2016-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Packer |
| CN116066011A (en) * | 2023-03-20 | 2023-05-05 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug and use method thereof |
-
2004
- 2004-04-01 CN CN 200420047845 patent/CN2693941Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362486A (en) * | 2012-04-05 | 2013-10-23 | 中国石油天然气股份有限公司 | Digital underground separate-layer water injection measuring and adjusting process pipe column and operation method thereof |
| CN103362486B (en) * | 2012-04-05 | 2016-04-06 | 中国石油天然气股份有限公司 | Digital underground separate-layer water injection measuring and adjusting process pipe column and operation method thereof |
| CN106437605A (en) * | 2016-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Packer |
| CN106437605B (en) * | 2016-09-06 | 2018-12-14 | 中国石油化工股份有限公司 | A kind of packer |
| CN116066011A (en) * | 2023-03-20 | 2023-05-05 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug and use method thereof |
| CN116066011B (en) * | 2023-03-20 | 2023-06-16 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |