CN111411917A - Liner cementing tool with packer and cementing method - Google Patents
Liner cementing tool with packer and cementing method Download PDFInfo
- Publication number
- CN111411917A CN111411917A CN202010474831.8A CN202010474831A CN111411917A CN 111411917 A CN111411917 A CN 111411917A CN 202010474831 A CN202010474831 A CN 202010474831A CN 111411917 A CN111411917 A CN 111411917A
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- Prior art keywords
- packer
- tool
- cementing
- liner
- tool body
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of drilling and completion of oil and gas wells, in particular to a liner cementing tool with a packer and a cementing method.
Description
Technical Field
The invention relates to the technical field of drilling and completion of oil and gas wells, in particular to a liner cementing tool with a packer and a cementing method.
Background
At present, the well cementing of a tail pipe of a side drilling well in a Changqing oilfield mainly adopts a packing type hydraulic tail pipe hanger, and the following problems mainly exist in the application process: 1. side drilling well cementation operation belongs to typical slim-hole narrow-gap well cementation, resistance is easy to meet in the casing running process, the pump starting circulation pressure is limited after a conventional hydraulic liner hanger is subjected to resistance (the general method for resistance relief is circulation drilling fluid), if the circulation pressure exceeds the shearing pressure of a hydraulic cylinder shear pin, the hanger can be hung in advance, and a casing string cannot be lowered to a designed position; 2. the conventional packer type hydraulic liner hanger packer is applied to the mechanical principle, namely, the packer is extruded by the weight of a drilling tool, so that a packer rubber sleeve is radially deformed, and the purpose of annular packing is realized. However, if a well with a high hanging position and a drilling tool with a weight which cannot meet the setting requirement of the packer is encountered, the original packer cannot achieve the purpose of effective annular space sealing.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides a liner cementing tool with a packer and a cementing method, and particularly has the characteristics of infinite circulation in the casing running process, guarantee for safe running of a casing, and safety and reliability due to the adoption of a hydraulic setting principle of the packer.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a liner cementing tool with a packer comprises
A tool body;
the middle core pipe is sleeved in the tool body;
a drill pipe joint;
one end of the lifting short section is connected with the drill rod joint, and the other end of the lifting short section is connected with the core pipe;
the left-hand thread screw sleeve is connected to the outer side wall of the lifting short section connected with the middle core pipe, and the middle core pipe is sleeved in the tool body through the left-hand thread screw sleeve;
the tieback cylinder is connected to the outer side wall of the top of the tool body;
the packer is connected to the outer side wall of the tool body at the lower end of the tieback cylinder;
the hydraulic cylinder is connected to the outer side wall of the tool body at the lower end of the packer, and the top of the hydraulic cylinder is in contact with the bottom of the packer;
and the protective joint is connected with the lower end of the tool body.
The outer side wall of the central core pipe sleeved with the tool body and the central core pipe is connected with a sealing sleeve.
A liquid inlet hole is formed between the inner wall of the tool body and the inner cavity of the hydraulic cylinder.
The packer comprises a plurality of annular rubber rings, and a skeleton structure is connected to the plurality of annular rubber rings.
The framework structure is a metal ring, an opening is formed in the metal ring on the outer side wall of the annular rubber ring, and a part of the outer side wall of the annular rubber ring is located in the opening of the metal ring.
The metal ring is a metal copper ring.
The cementing method of the liner cementing tool with the packer comprises any one of the liner cementing tools with the packer, and comprises the following steps
The method comprises the following steps: when the well cementation construction is carried out, the drill rod joint is connected with a drill rod, and then the whole liner well cementation tool is put into a well hole;
step two: on the basis of the step one, after the whole liner cementing tool is lowered to the designed position in the well, the drill stem is rotated clockwise at the well mouth, so that the whole liner cementing tool is released for cementing operation;
step three: on the basis of the second step, after the cementing operation is finished, slowly lifting the central pipe by 1.6-1.8 m, pressurizing the hydraulic cylinder to 20-25MPa to realize the setting of the packer, then continuously lifting the central pipe, circularly washing out redundant cement slurry in the well hole, and finishing the well cementation construction.
And in the second step, after the whole liner cementing tool is lowered to the designed position in the well, circulating drilling fluid is firstly carried out, the drilling fluid is circulated for two circulation circles under the condition that the discharge capacity is not lower than the discharge capacity in the drilling process, then the drill stem is rotated for 25-35 circles in the clockwise direction at the well mouth, so that the whole liner cementing tool is released, cementing operation is carried out, the pad fluid, the leading slurry and the tail slurry are sequentially injected, and the drill stem rubber plug is put into the drill stem.
And in the third step, after the cementing operation is finished, when the displacement liquid is substituted to displace cement to a designed position, the collision pressure is realized, the pressure is stabilized for 30 minutes, the central pipe is lifted to 1.8m after the pressure is released, the liquid inlet hole is exposed at the moment, the liquid enters the liquid cylinder, the liquid cylinder is pressurized to the pressure of 20MPa, the packer is set, the central pipe is continuously lifted, the excess cement slurry is recycled, and the well cementation construction is finished.
The invention has the beneficial effects that:
compared with the prior art, the invention protects the left-hand thread sleeve and prepares for subsequent tieback cementing through the tieback cylinder, the left-hand thread sleeve is used for playing the role of separating the tail pipe cementing tool from the upper drilling tool after the drilling tool is released, the central pipe can move up and down at the vertical distance of 1.2m after the drilling tool is released, the drill rod joint is used for connecting with the drill rod after the tail pipe is successfully lost, the packer is used for hydraulic sealing, the packer is used for hydraulic setting after the tail pipe cementing tool is used for cementing the well, the invention is safe and reliable, the requirements of the later-stage underground yield-increasing operation are met, the tail pipe cementing tool with the packer can start pump circulation in the whole process when the tail pipe cementing tool is sent into the well along with the drilling tool, the circulating pressure is not limited by the pump pressure, the success rate of casing running in is improved, the annular space between the tail pipe cementing tool and the upper casing in the process is larger, the circulation, the problems of leakage, borehole collapse and the like caused by exciting pressure generated by the conventional hanger and the collapse of the ball seat are solved, and the success rate of the whole liner cementing tool in running and the cementing quality are improved by the method.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the liner cementing tool with packer of the present invention.
FIG. 2 is a schematic diagram of the packer construction of the present invention.
In the figure: 1. a drill pipe joint; 2. a tieback cylinder; 3. a reverse-buckling threaded sleeve; 4. a core tube; 5. a packer; 6. a hydraulic cylinder; 7. sealing sleeves; 8. a liquid inlet hole; 9. protecting the joint; 10. a tool body; 11. lifting the short section; 12. a metal ring; 13. an annular rubber ring.
Detailed Description
Example 1:
referring to FIG. 1, which is a schematic structural view of embodiment 1 of the present invention, a liner cementing tool with a packer comprises
A tool body 10;
the central core tube 4 is sleeved in the tool body 10;
a drill rod joint 1;
one end of the lifting short section 11 is connected with the drill rod joint 1, and the other end of the lifting short section 11 is connected with the middle core pipe 4;
the left-hand thread 3, the left-hand thread 3 is connected to the outer side wall of the lifting short section 11 connected with the central core tube 4, and the central core tube 4 is sleeved in the tool body 10 through the left-hand thread 3;
the tieback cylinder 2 is connected to the outer side wall of the top of the tool body 10;
the packer 5 is connected to the outer side wall of the tool body 10 at the lower end of the tieback cylinder 2;
the hydraulic cylinder 6 is connected to the outer side wall of the tool body 10 at the lower end of the packer 5, and the top of the hydraulic cylinder 6 is in contact with the bottom of the packer 5;
and the protective joint 9 is connected with the lower end of the tool body 10, and the protective joint 9 is connected with the lower end of the tool body 10.
In actual use: the tieback cylinder 2 protects the reverse thread screw sleeve 3 and prepares for subsequent tieback well cementation, the reverse thread screw sleeve 3 is used for playing a role of separating a tail pipe well cementation tool from an upper drilling tool after being released, the central pipe 4 can move up and down at a vertical distance of 1.2m after being released, the drill pipe joint 1 is used for being connected with a drill pipe after verifying whether the tail pipe is successfully lost, and the packer 5 is used for hydraulic sealing.
Example 2:
the present embodiment is different from embodiment 1 in that: the outer side wall of the central core tube 4, which is sleeved with the central core tube 4, of the tool body 10 is connected with a sealing sleeve 7.
In actual use: the sealing sleeve 7 plays a role in movable sealing after releasing, and ensures the successful implementation of cementing operation.
Example 3:
the present embodiment is different from embodiment 1 in that: a liquid inlet hole 8 is arranged between the inner wall of the tool body 10 and the inner cavity of the liquid cylinder 6.
In actual use: the liquid inlet hole 8 is arranged between the inner wall of the tool body 10 and the inner cavity of the hydraulic cylinder 6, so that liquid can enter the hydraulic cylinder 6 only when the central tube 4 is lifted, and the liquid can be prevented from entering the hydraulic cylinder 6 when the central tube 4 is not lifted.
Example 4:
referring to fig. 2, the present embodiment is different from embodiment 3 in that: the packer 5 comprises a plurality of annular rubber rings 13, and a skeleton structure is connected to the plurality of annular rubber rings.
The framework structure is further a metal ring 12, the metal ring 12 is provided with an opening on the outer side wall of the annular rubber ring 13, and a part of the outer side wall of the annular rubber ring 13 is positioned in the opening of the metal ring 12.
The metal ring 12 is further a copper metal ring.
In actual use: annular rubber ring 13 plays hydraulic seal's effect, and between a plurality of annular rubber ring 13, there is metal ring 12 as skeleton texture, plays to bear the weight of and supports rubber ring hydraulic seal's effect, and metal ring 12 is that metal copper ring toughness is good, good processing.
Example 5:
a cementing method of a liner cementing tool with a packer comprises any one of the liner cementing tools with the packer described in embodiments 1-4, and comprises the following steps
The method comprises the following steps: when the well cementation construction is carried out, the drill rod joint 1 is connected with a drill rod, and then the whole liner well cementation tool is put into a borehole;
step two: on the basis of the step one, after the whole liner cementing tool is lowered to the designed position in the well, the drill stem is rotated clockwise at the well mouth, so that the whole liner cementing tool is released for cementing operation;
step three: on the basis of the second step, after the cementing operation is finished, the central pipe is lifted up slowly by 41.6-1.8 m, the hydraulic cylinder 6 is pressurized to 20-25MPa, the packer setting is realized, then the central pipe 4 is lifted up continuously, the redundant cement slurry in the well is washed out in a circulating mode, and the well cementing construction is finished.
And in the second step, after the whole liner cementing tool is lowered to the designed position in the borehole, circulating drilling fluid is firstly carried out for two circulation cycles under the condition that the discharge capacity is not lower than the discharge capacity in the drilling process, then the drill stem is rotated for 25-35 circles in the clockwise direction at the wellhead, so that the whole liner cementing tool is released, cementing operation is carried out, the pad fluid, the collar slurry and the tail slurry are sequentially injected, and the drill stem rubber plug is put into the drill stem.
And in the third step, after the cement injection operation is finished, when the displacement liquid is substituted to displace cement to a designed position, the collision pressure is realized, the pressure is stabilized for 30 minutes, after the pressure is released, the central pipe 4 is lifted to 1.8m, the liquid inlet hole 8 is exposed, the liquid enters the hydraulic cylinder 6, the hydraulic cylinder 6 is pressurized to 20MPa, the packer is set, when the pressure in the whole drilling tool is kept between 5 and 10MPa, the central pipe 4 is continuously lifted, the redundant cement slurry is circulated, and the well cementation construction is finished.
The packer hydraulic setting after well cementing and completion is safe and reliable, the requirement of the later-stage underground yield-increasing operation is met, the liner cementing tool with the packer can be pumped for circulation in the whole process when being sent into a drilling tool and entering a well, the circulation pressure is not limited by the pump pressure, and the casing running success rate is improved.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is within the scope of the claims.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Technical solutions between various embodiments may be combined with each other, but must be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Claims (9)
1. A liner cementing tool with a packer is characterized in that: comprises that
A tool body (10);
the central core pipe (4), the central core pipe (4) is sleeved in the tool body (10);
a tool joint (1);
one end of the lifting short section (11) is connected with the drill rod joint (1), and the other end of the lifting short section (11) is connected with the middle core pipe (4);
the left-hand thread screw sleeve (3), the left-hand thread screw sleeve (3) is connected to the outer side wall of the lifting short section (11) connected with the central core pipe (4), and the central core pipe (4) is sleeved in the tool body (10) through the left-hand thread screw sleeve (3);
the tie-back cylinder (2), the tie-back cylinder (2) is connected on the outer side wall of the top of the tool body (10);
the packer (5), the packer (5) is connected to the outer side wall of the tool body (10) at the lower end of the tieback cylinder (2);
the hydraulic cylinder (6) is connected to the outer side wall of the tool body (10) at the lower end of the packer (5), and the top of the hydraulic cylinder (6) is contacted with the bottom of the packer (5);
the protective joint (9), the protective joint (9) is connected with the lower end of the tool body (10).
2. The liner cementing tool with a packer of claim 1, wherein: the outer side wall of the central core pipe (4) which is sleeved with the tool body (10) and the central core pipe (4) is connected with a sealing sleeve (7).
3. The liner cementing tool with a packer of claim 1, wherein: a liquid inlet hole (8) is formed between the inner wall of the tool body (10) and the inner cavity of the hydraulic cylinder (6).
4. The liner cementing tool with a packer of claim 1, wherein: the packer (5) comprises a plurality of annular rubber rings (13), and a skeleton structure is connected to the plurality of annular rubber rings.
5. The packer-equipped liner cementing tool according to claim 4, wherein: the framework structure is a metal ring (12), an opening is formed in the metal ring (12) and located on the outer side wall of the annular rubber ring (13), and a part of the outer side wall of the annular rubber ring (13) is located in the opening of the metal ring (12).
6. The packer-equipped liner cementing tool according to claim 5, wherein: the metal ring (12) is a metal copper ring.
7. A method for cementing a liner cementing tool with a packer comprising the liner cementing tool with a packer of any one of claims 1 to 6, characterized in that: comprises the following steps
The method comprises the following steps: when well cementation construction is carried out, the drill rod joint (1) is connected with a drill rod, and then the whole liner cementing tool is put into a borehole;
step two: on the basis of the step one, after the whole liner cementing tool is lowered to the designed position in the well, the drill stem is rotated clockwise at the well mouth, so that the whole liner cementing tool is released for cementing operation;
step three: on the basis of the second step, after the cementing operation is finished, slowly lifting the central pipe (4) by 1.6-1.8 m, pressurizing the hydraulic cylinder (6) to 20-25MPa to realize the setting of the packer, then continuously lifting the central pipe (4), circularly washing out redundant cement slurry in the well bore, and finishing the well cementation construction.
8. The method of claim 7, wherein the cementing tool comprises a packer and is characterized in that: and in the second step, after the whole liner cementing tool is lowered to the designed position in the well, circulating drilling fluid is firstly carried out, the drilling fluid is circulated for two circulation circles under the condition that the discharge capacity is not lower than the discharge capacity in the drilling process, then the drill stem is rotated for 25-35 circles in the clockwise direction at the well mouth, so that the whole liner cementing tool is released, cementing operation is carried out, the pad fluid, the leading slurry and the tail slurry are sequentially injected, and the drill stem rubber plug is put into the drill stem.
9. The method of claim 7, wherein the cementing tool comprises a packer and is characterized in that: and in the third step, after the cementing operation is finished, when the displacement liquid is replaced to displace cement to a designed position, the collision pressure is realized, the pressure is stabilized for 30 minutes, the central pipe (4) is lifted to 1.8m after the pressure is released, the liquid inlet hole (8) is exposed at the moment, the liquid enters the hydraulic cylinder (6), the hydraulic cylinder (6) is pressurized to 20MPa, the packer is set, the central pipe (4) is continuously lifted, redundant cement slurry is circulated, and the well cementation construction is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474831.8A CN111411917B (en) | 2020-05-29 | Tail pipe cementing tool with packer and cementing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010474831.8A CN111411917B (en) | 2020-05-29 | Tail pipe cementing tool with packer and cementing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111411917A true CN111411917A (en) | 2020-07-14 |
| CN111411917B CN111411917B (en) | 2024-07-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523718A (en) * | 2020-12-04 | 2021-03-19 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Deep well layered packer |
| CN113250647A (en) * | 2021-07-19 | 2021-08-13 | 中国石油集团川庆钻探工程有限公司 | Suspension well completion integrated packer and well completion pipe string |
| CN113622865A (en) * | 2021-08-26 | 2021-11-09 | 中海石油(中国)有限公司 | Tail pipe pressure control well cementation method under packer setting condition |
| CN114458215A (en) * | 2020-11-18 | 2022-05-10 | 中国海洋石油集团有限公司 | Pressure-resistant large-size tail pipe hanger and using method thereof |
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| US20150285018A1 (en) * | 2014-04-03 | 2015-10-08 | Cameron International Corporation | Casing hanger lockdown tools |
| CN107120090A (en) * | 2016-02-25 | 2017-09-01 | 中国石油化工股份有限公司 | Tieback assembly and tail pipe remedy cementing method |
| CN109826587A (en) * | 2019-02-11 | 2019-05-31 | 中国石油天然气股份有限公司 | A kind of big orifice Water-isolation oil production packer and its operating method |
| CN212428710U (en) * | 2020-05-29 | 2021-01-29 | 中国石油天然气集团有限公司 | Liner cementing tool with packer |
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| CN101614117A (en) * | 2009-07-30 | 2009-12-30 | 中国石油天然气股份有限公司 | A kind of expansion tube type liner hanger |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458215A (en) * | 2020-11-18 | 2022-05-10 | 中国海洋石油集团有限公司 | Pressure-resistant large-size tail pipe hanger and using method thereof |
| CN114458215B (en) * | 2020-11-18 | 2023-09-01 | 中国海洋石油集团有限公司 | Pressure-resistant large-size tail pipe hanger and use method thereof |
| CN112523718A (en) * | 2020-12-04 | 2021-03-19 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Deep well layered packer |
| CN113250647A (en) * | 2021-07-19 | 2021-08-13 | 中国石油集团川庆钻探工程有限公司 | Suspension well completion integrated packer and well completion pipe string |
| CN113250647B (en) * | 2021-07-19 | 2021-09-14 | 中国石油集团川庆钻探工程有限公司 | Suspension well completion integrated packer and well completion pipe string |
| CN113622865A (en) * | 2021-08-26 | 2021-11-09 | 中海石油(中国)有限公司 | Tail pipe pressure control well cementation method under packer setting condition |
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