CN112814610A

CN112814610A - Expanding packer

Info

Publication number: CN112814610A
Application number: CN202110007099.8A
Authority: CN
Inventors: 孙淑芳
Original assignee: 孙淑芳
Current assignee: Shandong Jianyuan Engineering Co.,Ltd.
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-05-18
Anticipated expiration: 2041-01-05
Also published as: CN112814610B

Abstract

The invention discloses an expansion packer, which relates to the technical field of petroleum machinery, and particularly relates to an expansion packer, which comprises an upper-layer pipe, a lower-layer pipe and a fixing frame, wherein an upper joint is fixedly sleeved on the left side of the upper-layer pipe, fixing rings are fixedly sleeved on the outer parts of the upper-layer pipe and the lower-layer pipe, and an expansion spring and an expansion plate are movably connected between the two fixing rings. This expanding packer, cooperation through detecting head and fusing base and fuse and spacing spring is used, make this expanding packer can detect the position of packer through the contact head, the detecting head can send signal to fusing base when the packer moves the position that corresponds, make fusing base to the switch on of fuse, make fuse fusing, later the stopper pops out the wall of a well contact with the oil well from the inside of spacing pipe and lower floor's pipe under spacing spring's effect, make this expanding packer can accurate location and in time expand immediately and seal and separate work.

Description

Expanding packer

Technical Field

The invention relates to the technical field of petroleum machinery, in particular to an expansion packer.

Background

When an annular space between an oil pipe and an oil-gas well casing or an open hole well wall needs to be sealed, the packer is connected to the upper portion of the underground pipe column, and after the annular space is lowered to the designed depth, the packing part on the packer is expanded to seal the annular space of the oil sleeve in a hydraulic driving mode and the like. Different types of packers have different modes of activation and unsealing. After the hydraulic expansion type packer is lowered to the designed depth, pressurization is carried out in an oil pipe, high-pressure liquid acts on the inner cavity of the rubber sleeve through a pressure transmission pore in the packer, and the rubber sleeve expands to seal the annular space of the oil sleeve under the action of throttling pressure difference. When the oil pressure is released and the pressure of the oil sleeve is balanced, the rubber sleeve contracts to return to the original shape by the resilience force of the rubber sleeve to realize unsealing. After the compression packer is arranged to the designed depth, the compression packer pressurizes from the inside of the oil pipe, high-pressure liquid acts on the piston mechanism through a pressure transmission pore inside the packer, and the compression rubber sleeve expands to seal the annular space of the oil sleeve under the action of throttling pressure difference. When the oil pressure is released and the pressure of the oil sleeve is balanced, the rubber sleeve is restored to the original state by the resilience force of the rubber sleeve, and the rubber sleeve is unsealed.

What use most often in the existing market is the expanding packer, be applied to the zonal injection in oil field, separate layer acidizing, crowded stifled, construction process such as separate layer fracturing of layering, but common expanding packer still has certain not enough in the market, at first common expanding packer often can't in time expand fixedly when descending to assigned position, lead to packing the position and have certain error, secondly often outside can be attached to a large amount of debris when common expanding packer dismantles and takes out, be inconvenient to clear up, for this we have designed an expanding packer and have solved above-mentioned problem.

Disclosure of Invention

In view of the deficiencies of the prior art, the present invention provides an expandable packer that solves the problems set forth in the background above.

In order to achieve the purpose, the invention is realized by the following technical scheme: an expansion packer comprises an upper pipe, a lower pipe and a fixed frame, wherein an upper joint is fixedly sleeved on the left side of the upper pipe, fixing rings are fixedly sleeved on the outer portions of the upper pipe and the lower pipe respectively, an expansion spring and an expansion plate are movably connected between the two fixing rings, an air bag is fixedly sleeved between the two fixing rings, a limiting pipe is fixedly sleeved on the inner portion of the lower pipe, a contact head is fixedly installed on the left side of the limiting pipe, a detecting head is fixedly sleeved on the right side of the limiting pipe, a fusing base is fixedly sleeved on the inner portion of the limiting pipe, limiting blocks located on the upper side and the lower side of the fusing base are sleeved on the inner portion of the limiting pipe in a sliding mode, a fusing wire is fixedly connected between the fusing base and the limiting blocks, the limiting springs are welded between the fusing base and the limiting blocks, two guide posts are movably, and the outside screw of fixed frame cup joints the fastening bolt who is located between two guide posts, two the terminal fixed mounting of guide post has a splint, the outside welding of fixed frame has two fixed plates.

Preferably, the expansion base is movably sleeved between the expansion plate and the expansion spring and between the expansion plate and the fixing rings, and the expansion plate and the expansion spring are uniformly distributed between the two fixing rings.

Preferably, the bottom of the air bag is provided with a contact plate matched with the contact head, and the height value of the air bag is greater than that of the expansion plate.

Preferably, one end of the probe head extends into the interior of the restraining tube and is associated with the fuse base.

Preferably, the length value of the lower layer pipe is the same as the sum of the length values of the contact head and the limiting pipe, and a through groove matched with the limiting block is formed in the outer portion of the lower layer pipe.

Preferably, the fuse wires are uniformly distributed between the fusing base and the fuse wires, the limiting springs correspond to the fuse wires one to one, and the limiting springs are sleeved outside the fuse wires.

Preferably, the tail end of the fastening bolt is fixedly connected with the outside of the clamping plate through a bearing, and an arc-shaped opening matched with the upper-layer pipe is formed in the inner side of the clamping plate.

The invention provides an expansion packer, which has the following beneficial effects:

1. this expanding packer, cooperation through detecting head and fusing base and fuse and spacing spring is used, make this expanding packer can detect the position of packer through the contact head, the detecting head can send signal to fusing base when the packer moves the position that corresponds, make fusing base to the switch on of fuse, make fuse fusing, later the stopper pops out the wall of a well contact with the oil well from the inside of spacing pipe and lower floor's pipe under spacing spring's effect, make this expanding packer can accurate location and in time expand immediately and seal and separate work.

2. This expanding packer uses through the cooperation of expansion board and gasbag and contact head to make this expanding packer pop out the back at the stopper and take place the extrusion between upper strata pipe and the lower floor's pipe to make the expansion board outwards expand, when the expansion board is extruded to laminating with the wall of a well, the expansion board lock dies, the bottom and the contact head contact of gasbag simultaneously, the gasbag starts, fills up the gap between the expansion board, makes this expanding packer possess stronger packing effect.

3. This expanding packer uses through the cooperation of fastening bolt and guide post and splint for this expanding packer is being accomplished when being dismantled and take off, and the staff can make splint slide along the direction of guide post through rotatory fastening bolt, thereby makes two splint centre grippings contact each other, and when the packer took out, the outside of upper strata pipe and lower floor's pipe and expansion plate contacted with splint, thereby clears up the outside debris of packer, and the operating personnel of being convenient for retrieves the packer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the construction of the bladder of the present invention;

FIG. 3 is a schematic view of the expansion plate box retainer ring of the present invention;

FIG. 4 is a schematic view of the interior of the limiting tube according to the present invention;

FIG. 5 is a schematic structural view of a fixing frame of the plywood box of the present invention;

FIG. 6 is a schematic view showing the outer structure of the upper and lower pipes according to the present invention.

In the figure: 1. an upper pipe; 2. a lower layer pipe; 3. a contact head; 4. a limiting block; 5. a probe head; 6. a limiting pipe; 7. an expansion plate; 8. an upper joint; 9. a guide post; 10. a splint; 11. a fixing frame; 12. fastening a bolt; 13. a fixing plate; 14. an air bag; 15. expanding the base; 16. a fixing ring; 17. an expansion spring; 18. fusing the base; 19. fusing the wires; 20. and a limiting spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides an expansion packer, including upper pipe 1 and lower floor's pipe 2 and fixed frame 11, the fixed cover in left side of upper pipe 1 is equipped with upper joint 8, and the fixed ring 16 of all fixed cover of the outside of upper pipe 1 and lower floor's pipe 2, swing joint has expansion spring 17 and expansion board 7 between two fixed rings 16, and fixed cover is equipped with an gasbag 14 between two fixed rings 16, swing joint has expansion base 15 between expansion board 7 and expansion spring 17 and the fixed ring 16, and expansion board 7 and expansion spring 17 evenly distributed are between two fixed rings 16, expansion base 15 can be died when expansion spring 17 and expansion board 7 are extruded to expand the maximum position for the first time, make expansion spring 17 and expansion board 7 carry out the work of packing of packer, expansion base 15 just can remove the locking when extrudeing once more, make expansion spring 17 and expansion board 7 relax, expansion board 7 and expansion spring 17 evenly distributed can guarantee expansion spring 17 and expand and fix between two fixed rings 16 Stress of the expanding base 15 and the expanding plate 7 is uniform, working stability of the device is improved, the principle and the using process of the expanding base 15 are the same as those of the prior art, repeated description is omitted, the bottom of the air bag 14 is provided with a contact plate matched with the contact head 3, the height value of the air bag 14 is larger than that of the expanding plate 7, the contact plate at the bottom of the air bag 14 can enable the air bag 14 to expand after being contacted with the contact head 3, because the height value of the air bag 14 is larger than that of the expanding plate 7, the air bag 14 can completely fill up the gap between the expanding plates 7 after being expanded, so that the packing effect of the packer is ensured, the limiting pipe 6 is fixedly sleeved in the inner part of the lower-layer pipe 2, the contact head 3 is fixedly installed on the left side of the limiting pipe 6, the detecting head 5 is fixedly sleeved on the right side of the limiting pipe 6, the length value of the lower-layer pipe 2 is, and the exterior of the lower layer pipe 2 is provided with a through groove matched with the limit block 4, the relationship of the length values of the contact head 3, the limit pipe 6 and the lower layer pipe 2 enables the tail end of the contact head 3 to be close to a contact plate at the bottom of the air bag 14, so that after the expansion plate 7 is expanded, the contact head 3 can be timely contacted with the contact plate at the bottom of the air bag 14, so that the air bag 14 is rapidly expanded, the through groove matched with the limit block 4 and formed in the exterior of the lower layer pipe 2 enables the limit block 4 to slide out of the interior of the limit pipe 6 and the lower layer pipe 2 to be contacted with a well wall, the limit work is carried out, the fusing base 18 is fixedly sleeved in the interior of the limit pipe 6, the limit blocks 4 positioned at the upper side and the lower side of the fusing base 18 are sleeved in the interior of the limit pipe 6 in a sliding manner, the, one end of the detecting head 5 extends into the limiting tube 6 and is associated with the fusing base 18, one end of the detecting head 5 is associated with the fusing base 18 so that the detecting head 5 can generate a working signal to the fusing base 18 after detecting that the packer moves to a proper position, the fusing base 18 can work to assist the packer and carry out packing work, and the accuracy of the packing position is ensured, a fuse wire 19 is fixedly connected between the fusing base 18 and the limiting block 4, a limiting spring 20 is welded between the fusing base 18 and the limiting block 4, the fuse wires 19 are uniformly distributed between the fusing base 18 and the fuse wire 19, the limiting springs 20 correspond to the fuse wires 19 one by one, the limiting spring 20 is sleeved outside the fuse wire 19, the fuse wire 19 is used for connecting the limiting block 4 and the fusing base 18, and in order to keep the connection stability under normal conditions, therefore the fuse wires 19 need to be uniformly distributed between the fusing base 18 and the limiting block 4, fuse 19 can be fused after fusing base 18 circular telegram, stopper 4 just can pop out from the inside of spacing pipe 6 under limiting spring 20's effect this moment, it is spacing to install wholly, therefore limiting spring 20 cup joints and provides sufficient elasticity for stopper 4 in the outside of fuse 19, the equal movable sleeve in both sides of fixed frame 11 is equipped with two guide posts 9, and the outside screw of fixed frame 11 cup joints the fastening bolt 12 that is located between two guide posts 9, the terminal fixed mounting of two guide posts 9 has a splint 10, the outside welding of fixed frame 11 has two fixed plates 13, fixed plate 13 is used for the fixed of auxiliary fixation frame 11 at the well head position, the terminal outside fixed connection through bearing and splint 10 of fastening bolt 12, splint 10 inboard is provided with and upper strata 1 phase-match arc opening, the terminal of fastening bolt 12 makes fastening bolt 12 pass through bearing and splint 10 fixed connection and make fastening bolt 12 only can drive splint 10 when rotating inside along the fixed frame 11 along the splint 10 The guide of guide post 9 moves without deflection following fastening bolt 12, and the arc opening formed on the inner side of clamping plate 10 makes clamping plate 10 contact with the outer surface of upper pipe 1 more closely, thereby completing sundries cleaning work better.

In conclusion, when the expandable packer is used, the packer is inserted into an oil well, the packer is enabled to slide in the oil well, when the detecting head 5 detects that the packer comes to a specified position, the fusing base 18 is started to electrify the fusing wire 19, the fusing wire 19 is fused, the limiting block 4 is enabled to be popped out from the limiting pipe 6 under the action of the elastic force of the limiting spring 20, the packer stops moving in time, the packer is continuously pushed to move, the upper-layer pipe 1 can extrude the expansion plate 7 between the upper-layer pipe 1 and the lower-layer pipe 2, so that the expansion plate 7 is expanded, when the outer wall of the expansion plate 7 is expanded to be in contact with the well wall, the expansion plate 7 is locked, the contact head 3 is in contact with the bottom of the air bag 14, so that the air bag 14 is expanded and fills the gap between the expansion plates 7, when the packer needs to be recovered, the fastening bolt 12 is rotated, so that the two clamping plates 10 are clamped with each, promote upper strata pipe 1 once more and make expansion plate 7 relieve the locking of self, upwards stimulate the packer, because the outside of spacing pipe 6 is provided with the inclined plane during the packer motion for can not receive the hindrance in the packer motion process, when the packer moves to the well head, the outside of upper strata pipe 1 and lower floor's pipe 2 and expansion plate 7 contacts and scrapes debris with splint 10, the operating personnel of being convenient for retrieves the packer, accomplish the packing of whole expanding packer and retrieve the clearance operating procedure, can.

Claims

1. The utility model provides an expansion packer, includes upper strata pipe (1) and lower floor's pipe (2) and fixed frame (11), its characterized in that: the left side of the upper-layer pipe (1) is fixedly sleeved with an upper joint (8), the outer parts of the upper-layer pipe (1) and the lower-layer pipe (2) are fixedly sleeved with fixing rings (16), an expansion spring (17) and an expansion plate (7) are movably connected between the two fixing rings (16), an air bag (14) is fixedly sleeved between the two fixing rings (16), the inner part of the lower-layer pipe (2) is fixedly sleeved with a limiting pipe (6), the left side of the limiting pipe (6) is fixedly provided with a contact head (3), the right side of the limiting pipe (6) is fixedly sleeved with a detecting head (5), the inner part of the limiting pipe (6) is fixedly sleeved with a fusing base (18), the inner part of the limiting pipe (6) is sleeved with limiting blocks (4) positioned on the upper side and the lower side of the fusing base (18) in a sliding manner, and a fusing wire (19) is fixedly connected between the, and the welding has spacing spring (20) between fusing base (18) and stopper (4), the equal movable sleeve in the left and right sides of fixed frame (11) is equipped with two guide posts (9), and the outside screw socket of fixed frame (11) is located fastening bolt (12) between two guide posts (9), two the terminal fixed mounting of guide post (9) has a splint (10), the outside welding of fixed frame (11) has two fixed plates (13).

2. The expandable packer of claim 1, wherein: expansion base (15) are movably sleeved between the expansion plate (7) and the expansion spring (17) and the fixing ring (16), and the expansion plate (7) and the expansion spring (17) are uniformly distributed between the two fixing rings (16).

3. The expandable packer of claim 1, wherein: the bottom of the air bag (14) is provided with a contact plate matched with the contact head (3), and the height value of the air bag (14) is greater than that of the expansion plate (7).

4. The expandable packer of claim 1, wherein: one end of the probe (5) extends into the limiting tube (6) and is associated with the fusing base (18).

5. The expandable packer of claim 1, wherein: the length value of the lower layer pipe (2) is the same as the sum of the length values of the contact head (3) and the limiting pipe (6), and a through groove matched with the limiting block (4) is formed in the outer portion of the lower layer pipe (2).

6. The expandable packer of claim 1, wherein: fuse (19) evenly distributed is between fusing base (18) and fuse (19), spacing spring (20) and fuse (19) one-to-one, and spacing spring (20) suit is in fuse (19) outside.

7. The expandable packer of claim 1, wherein: the tail end of the fastening bolt (12) is fixedly connected with the outer part of the clamping plate (10) through a bearing, and an arc-shaped opening matched with the upper-layer pipe (1) is formed in the inner side of the clamping plate (10).