CN111852368A - Setting device and pipe string comprising same - Google Patents
Setting device and pipe string comprising same Download PDFInfo
- Publication number
- CN111852368A CN111852368A CN201910362170.7A CN201910362170A CN111852368A CN 111852368 A CN111852368 A CN 111852368A CN 201910362170 A CN201910362170 A CN 201910362170A CN 111852368 A CN111852368 A CN 111852368A
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- Prior art keywords
- setting
- setting device
- locking
- wall
- cylinder
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for setting packers
Abstract
The invention provides a setting device and a pipe string comprising the same, wherein the setting device comprises a body; the sleeve is sleeved on the outer wall of the body, and the outer wall of the sleeve is circumferentially provided with accommodating grooves at intervals; the setting stop block can be embedded in the accommodating groove; the locking assembly can limit the position of the setting stop block, wherein the locking assembly can limit the setting stop block in the accommodating groove and can radially protrude relative to the accommodating groove after the limitation of the releasing is limited, the setting device is provided with the locking assembly, the locking assembly can guarantee that the setting stop block of the setting device is in a locking state in the process of judging whether releasing is successful by lifting the pull pipe, so that the packer cannot be activated to set in advance, and after the releasing judgment is finished, the locking assembly can be unlocked to limit the setting stop block, so that the packer can be smoothly set after the cementing is finished.
Description
Technical Field
The invention relates to the technical field of oil and gas well construction, in particular to a setting device and a pipe string comprising the same.
Background
In the technical field of oil and gas well construction, the packer is a common tool for field operation of well cementing and completion, and is mainly used for packing an annulus between a tubular column and a casing pipe and preventing the phenomenon of annulus gas channeling caused by failure of later-stage well cementing cement.
In the use process, the packer is matched with a liner hanger for use. Typically, packer setting is performed after the hanger is set and the cementing operation is completed. And the hanger can verify whether the releasing is successful or not after being hung. In the verification process, the whole pipe string needs to be lifted up to verify whether the pipe string is released or not through hanging weight. In the prior art, the packer is frequently set in advance before well cementation in the process of lifting a pipe string, so that annular sealing cannot realize well cementation operation.
Therefore, the technical problem to be solved urgently is to provide a setting device and a pipe string comprising the same for avoiding the advance setting of a packer.
Disclosure of Invention
In view of some or all of the above technical problems in the prior art, the present invention provides a setting device and a pipe string including the same. The setting device is provided with a locking assembly, and the setting stop block of the setting device can be in a locking state in the process of judging whether the releasing is successful by lifting the pull pipe, so that the packer cannot be activated to set in advance. And after the releasing judgment is finished, the locking assembly can be unlocked to remove the limitation on the setting stop block, so that the packer can be smoothly set after the well cementation is finished. The setting device can ensure the safety of releasing judgment through the energy efficiency, so that the setting device is particularly suitable for the condition that the packer is set in advance due to overlarge up-and-down floating of a pipe column caused by external factors in the well cementation operation of an ocean platform and the like and the judgment of releasing operation of a light tail pipe.
According to an aspect of the invention, there is provided a setting device comprising:
a cylindrical main body, a plurality of cylindrical main bodies,
a sleeve sleeved on the outer wall of the body, accommodating grooves are arranged on the outer wall of the sleeve at intervals in the circumferential direction,
a setting stop block which can be embedded in the accommodating groove,
a locking assembly capable of defining a position of the setting stop, wherein the locking assembly is capable of defining the setting stop in the receiving slot and the setting stop is capable of projecting radially relative to the receiving slot after the defining is released.
In one embodiment, the locking assembly has:
a locking cylinder sleeved on the outer wall of the lower end of the body, locking ribs arranged at intervals in the circumferential direction on the upper end of the locking cylinder,
a dovetail groove which is arranged on the setting block and can be connected with the locking rib in a matching way,
wherein the locking barrel is axially movable relative to the body to cause the locking ribs to disengage from the dovetail slots.
In one embodiment, the locking cylinder is selectively connected with the body, a first step surface is configured on the inner wall of the locking cylinder to form a liquid cavity with a second step surface arranged on the outer wall of the body, and a pressure transfer hole capable of communicating the liquid cavity with the inner cavity of the body is arranged on the wall of the body.
In one embodiment, a clamp spring sleeve is sleeved at the lower end of the locking barrel, a clamp spring is arranged between the locking barrel and the clamp spring sleeve, and a clamp spring groove capable of being matched with the clamp spring is arranged on the outer wall of the body.
In one embodiment, an elastic member capable of pushing the setting stop to move radially after releasing its confinement is provided between the setting stop and the body.
In one embodiment, the setting stop block is provided with a through hole from inside to outside, the elastic piece can extend in the through hole and is embedded into the wall of the body, and a screw is arranged on the outer side of the through hole in a blocking mode.
In one embodiment, the upper end and the lower end of the opening of the accommodating groove are provided with first extending parts extending in an axis opposite mode, and the upper end and the lower end of the setting stop block are provided with second extending parts capable of being clamped with the first extending parts.
In one embodiment, the outer wall surface and the upper end surface of the setting stop block are connected through a bevel.
In one embodiment, a cylindrical lower joint is provided at the lower end of the body.
According to another aspect of the present invention, there is provided a pipe string comprising:
the back-connection cylinder is provided with a back-connection cylinder,
a packer arranged at the lower end of the tieback cylinder,
a hanger arranged at the lower end of the packer,
a lifting pipe which can extend into the inner cavity of the tieback cylinder,
the setting device can be arranged in the inner cavity of the tieback cylinder and connected with the lower end of the pulling tube,
a releasing tool arranged at the lower end of the lower joint of the setting device,
the release can be selectively connected with the packer.
Compared with the prior art, the setting device has the advantages that the setting device is provided with the locking assembly, and the setting stop block of the setting device is in a locking state in the process of judging whether the releasing is successful by lifting the pull pipe, so that the packer cannot be activated to set in advance. And after the releasing judgment is finished, the locking assembly can be unlocked to remove the limitation on the setting stop block, so that the packer can be smoothly set after the well cementation is finished. The setting device can ensure the safety of releasing judgment through the energy efficiency, so that the setting device is particularly suitable for the condition that the packer is set in advance due to overlarge up-and-down floating of a pipe column caused by external factors in the well cementation operation of an ocean platform and the like and the judgment of releasing operation of a light tail pipe.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
figure 1 shows a setting device according to one embodiment of the invention in a first state;
FIG. 2 is section A-A from FIG. 1;
FIG. 3 shows a perspective view of a locking barrel according to one embodiment of the present invention;
FIG. 4 shows a perspective view of a setting stop according to one embodiment of the present invention;
figure 5 shows the setting device in a second state according to an embodiment of the invention;
FIG. 6 shows a string of tubulars running into a well in accordance with an embodiment of the present invention;
FIG. 7 shows a tubing string with a hanger in a seated position according to one embodiment of the present invention;
FIG. 8 illustrates a pipe string determining a release status according to one embodiment of the present invention;
FIG. 9 shows a tubing string actuating a packer set condition in accordance with an embodiment of the present invention;
in the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Figure 1 shows a setting device according to one embodiment of the invention. As shown in fig. 1, the setting device 100 comprises a body 1, a sleeve 2, a setting block 3 and a locking assembly. Wherein, the body 1 is a cylinder shape and mainly plays a role in supporting and connecting. The sleeve 2 is sleeved on the outer wall of the body 1. Accommodating grooves 21 are provided at intervals in the circumferential direction on the outer wall of the sleeve 2. The setting block 3 is embedded in the receiving groove 21 and is used for being clamped on the upper end surface of the tieback cylinder 200 to drive the tieback cylinder 200 to move so as to set the packer 300 when the packer 300 needs to be set. A locking assembly is provided on the outer wall of the body 1, the position of the setting stop 3 with respect to the housing groove 21 being fixed during the locking of the locking assembly, while the setting stop 3 can protrude radially with respect to the housing groove 21 during the unlocking.
By providing a locking assembly, the setting block 3 can be kept in a locked state during the verification and release process. Only after a successful release, when setting of the packer 300 is required, the locking of the locking assembly is released, so that the setting block 3 is de-defined and moves radially projecting with respect to the receiving groove 21. Therefore, the setting device 100 can actively control the position of the setting stop block 3 through the locking assembly, and the problem that the setting stop block 3 protrudes radially in verification release so that the packer is set in advance is avoided. Moreover, in the structure, the setting device 100 can lift the tieback cylinder 200, so that the lifting distance of releasing verification is greatly increased, and the risk of well cementation operation is reduced.
In one embodiment, the locking assembly has a locking barrel 4. The locking cylinder 4 is sleeved on the outer wall of the lower end of the body 1 and is cylindrical. Further, the upper end of the lock cylinder 4 is provided with lock ribs 41 at intervals in the circumferential direction, as shown in fig. 3. Meanwhile, a dovetail groove 31 is provided on the setting block 3 to penetrate in the circumferential direction, as shown in fig. 2. The locking rib 41 extends axially upward, passes through the lower end surface of the receiving groove 21 and is engaged with the dovetail groove 31. This snap-in manner enables a very firm definition of the position of the setting stop 3.
The locking barrel 4 is axially movable relative to the body 1 to cause the locking ribs 41 to disengage from the dovetail grooves 31 to release the setting stops 3. Structurally, the inner wall of the locking cylinder 4 is formed with a first step surface 42. While a second step surface 11 is formed on the outer wall of the body 1. After the locking cylinder 4 is sleeved on the outer wall of the body 1, a liquid cavity 43 is formed between the first step surface 42 and the second step surface 11. In addition, a pressure transfer hole 12 is provided in the wall of the body 1, which can communicate the liquid chamber 43 with the inner chamber of the body 1. In addition, the lock cylinder 4 is selectively provided on the body 1 by providing the shear pin 7. The arrangement is such that when pumping pressure fluid into the internal chamber of the body 1, the fluid passes through the pressure transfer apertures 12 into the fluid chamber 43. Pressure is applied to the first step surface 42, and when the pressure reaches the shearing pressure of the shear pin 7, the shear pin 7 is sheared. Thereafter, the hydraulic pressure urges the locking barrel 4 axially downward until the locking ribs 41 disengage the dovetail grooves 31 to unlock the setting block 3. The arrangement has the advantages that the locking assembly is unlocked by driving the locking barrel 4 to move in a hydraulic pressure mode, the structure is simple, and the implementation is easy.
The lower end of the locking cylinder 4 is sleeved with a snap spring sleeve 5. A clamp spring 6 is arranged between the locking cylinder 4 and the clamp spring sleeve 5. Meanwhile, a clamp spring groove 13 capable of being matched with the clamp spring 6 is formed in the outer wall of the body 1. During the axial downward movement of the locking barrel 4, the snap spring sleeve 5 and the snap spring 6 move downward along with the locking barrel until the snap spring 6 moves to the snap spring groove 13 and is matched with the snap spring groove to limit the locking barrel 4 to move further downward, and at this time, the locking rib 41 is completely disengaged from the dovetail groove 31. The arrangement can limit the position of the locking cylinder 4, and ensures the safety of subsequent setting.
An elastic member 9 is provided between the setting stop 3 and the body 1, as shown in fig. 2. After the delimitation of the setting stop 3 is released, the elastic element 9 urges the setting stop 3 to move radially, as shown in figure 5. Specifically, through holes 33 are provided from the inside to the outside on both sides of the setting stopper 3 in the circumferential direction, respectively. An elastic member 9, such as a spring, is inserted into the through hole 33 and extends into and is embedded in the wall of the body 1. The screw 10 is provided in a manner to close the opening on the outer side of the through hole 33. In the locked state of the locking cylinder 4 and the setting stop 3, the spring is compressed. And after the setting stop block 3 is unlocked, the setting stop block 3 can be urged to move radially outwards under the action of the elastic force of the spring. In order to ensure the uniformity of force and further ensure the motion stability of the setting stop blocks 3, three setting stop blocks 3 are arranged in the circumferential direction, and through holes 33 are arranged on two sides of each setting stop block 3 in the circumferential direction. For example, four through holes 33 are provided on the setting block 3, as shown in fig. 4.
In one embodiment, first extending portions 22 extending axially oppositely are provided at upper and lower ends of the opening of the receiving groove 21. Meanwhile, the upper end and the lower end of the setting stop block 3 are provided with second extending parts 32 which can be clamped with the first extending parts 22. When the setting stop 3 is subjected to a spring force to move radially, the first extension 22 engages with the second extension 32, thereby limiting the position of the setting stop 3 and preventing it from coming out of the receiving groove 21. Preferably, the outer wall surface and the upper end surface of the setting block 3 are connected through an inclined surface. This arrangement ensures that the setting stop 3 is easily installed into the receiving groove 21, and that the setting stop 3 is radially movable relative to the receiving groove 21, thereby preventing the first extending portion 22 from catching the main body of the setting stop 3 and preventing the setting stop 3 from being radially removed.
Further, a cylindrical lower joint 8 is provided at the lower end of the body 1 for connecting the releasing device 600.
The present application also relates to a string 900. As shown in fig. 6, string 900 includes a tieback string 200, a packer 300 disposed at the lower end of tieback string 200, a hanger 400 disposed at the lower end of packer 300, a dip tube 500 that can extend into the lumen of tieback string 200, setting device 100 and a release device 600 as described above. Wherein the setting device 100 can be disposed in the inner cavity of the tieback barrel 200 and connected to the lower end of the pull-up tube 500. The upper end of the releasing device 600 is connected with the lower sub 8 of the setting device 100, and the lower end is selectively connected with the packer 300.
In use, the string 900 is first run into the wellbore as shown in FIG. 6.
The actuator hanger 400 is then seated on the outer sleeve, as shown in FIG. 7. Of course, the way the hanger 400 sits and hangs can be achieved by pitching and holding pressure. It should be noted that in this case, the hanger 400 setting pressure is less than the shear pressure of the shear pin 7 of the setting device 100.
Then, the releasing device 600 needs to be separated from the packer 300 to realize releasing. And after the release the pull tube 500 needs to be lifted up to verify that the release is complete. The setting device 100 according to the invention can be lifted out of the tieback cartridge 200. And during the set-up process, the setting of the packer 300 is advanced as a result of the locking assembly operating so that the setting block 3 does not protrude radially and the setting back barrel 200 is pressed, as shown in figure 8. Therefore, the pipe string 900 with the structure greatly increases the lifting distance of releasing verification and reduces the risk of well cementation operation.
Furthermore, after the release verification is completed, the entire pipe string 900 is replaced to the original position. And the locking of the setting device 100 is released by pressing, and the locking cylinder 4 moves down to make the locking rib 41 escape from the dovetail groove 31. At this time, the setting stop 3 is unlocked, and the setting stop 3 is abutted against the inner surface of the connecting back cylinder 200 under the action of the spring.
Finally, when the cementing process is over, the string 900 is lifted up until the setting device 100 is lifted out of the tieback cartridge 200. At this time, the setting stop block 3 pops up under the action of the spring, and continues to be lowered until the setting stop block 3 is pressed on the upper end face of the tieback cylinder 200, and continues to apply pressure to set the packer 300, so as to complete the annular sealing and the whole cementing operation process, as shown in fig. 9.
In the process of carrying out well cementation on an ocean operation platform, the platform floats up and down under the action of sea waves, and a conventional packer setting device possibly causes a packer setting stop block to pop up in advance due to the up-and-down floating of a pipe column after a hanger is released, so that the packer cannot be fixed in advance. The setting device 100 can control the operation of the setting block 3, greatly reduce the risk of setting the packer 300 in advance and improve the safety of well cementation operation.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or variations within the technical scope of the present invention disclosed, and such changes or variations should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A setting device, comprising:
a cylindrical main body, a plurality of cylindrical main bodies,
a sleeve sleeved on the outer wall of the body, accommodating grooves are arranged on the outer wall of the sleeve at intervals in the circumferential direction,
a setting stop block which can be embedded in the accommodating groove,
a locking assembly that can define a position of the setting stop, wherein the locking assembly can define the setting stop in the receiving slot and the setting stop can project radially relative to the receiving slot after demating.
2. The setting device of claim 1, wherein the locking assembly has:
a locking cylinder sleeved on the outer wall of the lower end of the body, locking ribs are arranged at the upper end of the locking cylinder at intervals in the circumferential direction,
a dovetail groove which is arranged on the setting block and can be connected with the locking rib in a matching way,
wherein the locking barrel is axially movable relative to the body to cause the locking ribs to disengage from the dovetail slots.
3. The setting device of claim 2, wherein the locking cylinder is selectively connected to the body, a first step surface is configured on an inner wall of the locking cylinder to form a liquid chamber with a second step surface provided on an outer wall of the body, and a pressure transfer hole capable of communicating the liquid chamber with an inner cavity of the body is provided on the wall of the body.
4. The setting device according to claim 2 or 3, characterized in that a snap spring sleeve is sleeved on the lower end of the locking cylinder, a snap spring is arranged between the locking cylinder and the snap spring sleeve, and a snap spring groove capable of being matched with the snap spring is arranged on the outer wall of the body.
5. Setting device as claimed in any of claims 1 to 4, characterized in that between the setting stop and the body there is provided an elastic element able to push the setting stop radially after releasing its confinement.
6. The setting device of claim 5, wherein the setting block is provided with a through hole from inside to outside, the elastic member can extend in the through hole and be embedded into the wall of the body, and a screw is arranged on the outside of the through hole in a blocking manner.
7. The setting device of any one of claims 1 to 6, wherein first extending parts extending in an opposite axis manner are arranged at the upper end and the lower end of the opening of the accommodating groove, and second extending parts capable of being clamped with the first extending parts are arranged at the upper end and the lower end of the setting stop block.
8. The setting device of claim 7, wherein the outer wall surface and the upper end surface of the setting stop are connected by a bevel.
9. The setting device according to any of claims 1 to 8, wherein a cylindrical lower joint is provided at the lower end of the body.
10. A string of pipes, comprising:
the back-connection cylinder is provided with a back-connection cylinder,
a packer disposed at a lower end of the tieback string,
a hanger arranged at the lower end of the packer,
a lifting tube capable of extending into the inner cavity of the tieback cylinder,
setting device according to any of claims 1 to 9 disposable in the lumen of the tieback cylinder and connected to the lower end of the pull-up tube,
a releasing tool arranged at the lower end of the lower joint of the setting device,
the release can be selectively connected with the packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362170.7A CN111852368A (en) | 2019-04-30 | 2019-04-30 | Setting device and pipe string comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362170.7A CN111852368A (en) | 2019-04-30 | 2019-04-30 | Setting device and pipe string comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852368A true CN111852368A (en) | 2020-10-30 |
Family
ID=72965724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910362170.7A Pending CN111852368A (en) | 2019-04-30 | 2019-04-30 | Setting device and pipe string comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852368A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2099887A (en) * | 1981-06-10 | 1982-12-15 | Baker Int Corp | Slack adjustment for slip system in downhole well apparatus |
| CN1051690A (en) * | 1989-11-16 | 1991-05-29 | 于西诺尔·萨希洛尔 | Used cylinder in the device of continuous casting on a cylinder or between two cylinders |
| CN101503952A (en) * | 2008-02-04 | 2009-08-12 | 中国石油化工股份有限公司 | Seat seal mechanism used for packing type tail pipe hanger |
| CN101657601A (en) * | 2006-12-04 | 2010-02-24 | 贝克休斯公司 | Be used to the expansible reamer of application with boring |
| CN204627516U (en) * | 2015-05-12 | 2015-09-09 | 中国石油化工股份有限公司 | Tail pipe packer setting device and packing formula extension hanger |
| CN205117260U (en) * | 2015-10-30 | 2016-03-30 | 中国海洋石油总公司 | Prevent hydraulic pressure setting tool of premature setting |
| CN205532422U (en) * | 2016-01-19 | 2016-08-31 | 丹诺(北京)石油技术服务有限公司 | Top is sealed and is separated liner hanger |
| US20170234102A1 (en) * | 2014-08-20 | 2017-08-17 | E Holstad Holding As | An Apparatus For Sealing A Bore, A System Comprising The Apparatus And A Method For Using Apparatus |
| CN208473780U (en) * | 2018-06-22 | 2019-02-05 | 中国石油化工股份有限公司 | A kind of hydraulic suspension hanging device |
-
2019
- 2019-04-30 CN CN201910362170.7A patent/CN111852368A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2099887A (en) * | 1981-06-10 | 1982-12-15 | Baker Int Corp | Slack adjustment for slip system in downhole well apparatus |
| CN1051690A (en) * | 1989-11-16 | 1991-05-29 | 于西诺尔·萨希洛尔 | Used cylinder in the device of continuous casting on a cylinder or between two cylinders |
| CN101657601A (en) * | 2006-12-04 | 2010-02-24 | 贝克休斯公司 | Be used to the expansible reamer of application with boring |
| CN101503952A (en) * | 2008-02-04 | 2009-08-12 | 中国石油化工股份有限公司 | Seat seal mechanism used for packing type tail pipe hanger |
| US20170234102A1 (en) * | 2014-08-20 | 2017-08-17 | E Holstad Holding As | An Apparatus For Sealing A Bore, A System Comprising The Apparatus And A Method For Using Apparatus |
| CN204627516U (en) * | 2015-05-12 | 2015-09-09 | 中国石油化工股份有限公司 | Tail pipe packer setting device and packing formula extension hanger |
| CN205117260U (en) * | 2015-10-30 | 2016-03-30 | 中国海洋石油总公司 | Prevent hydraulic pressure setting tool of premature setting |
| CN205532422U (en) * | 2016-01-19 | 2016-08-31 | 丹诺(北京)石油技术服务有限公司 | Top is sealed and is separated liner hanger |
| CN208473780U (en) * | 2018-06-22 | 2019-02-05 | 中国石油化工股份有限公司 | A kind of hydraulic suspension hanging device |
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Application publication date: 20201030 |