CN106567687A - Top-down expandable casing expansion method for deep well - Google Patents
Top-down expandable casing expansion method for deep well Download PDFInfo
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- CN106567687A CN106567687A CN201510655324.3A CN201510655324A CN106567687A CN 106567687 A CN106567687 A CN 106567687A CN 201510655324 A CN201510655324 A CN 201510655324A CN 106567687 A CN106567687 A CN 106567687A
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- expansion
- expandable casing
- hanger
- well
- rubber plug
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Abstract
The invention relates to a top-down expandable casing expansion method for a deep well. The top-down expandable casing expansion method for deep well includes the following concrete implementation steps: according to a design requirement, descending an expandable casing assembly to a preset position and carrying out cementing operation; after completing the cementing operation, placing a drilling rod rubber plug to drive the cement to push the drilling rod rubber plug to the location of a hollow rubber plug of the expandable casing for composition, continuously pushing the drilling rod rubber plug to a composite rubber plug, and bumping and pressing at a bumping and pressing base; utilizing hydraulic pressure to drive a hydraulic booster for an expansion awl to pull the expansion awl to carry out expansion setting on an expansion suspension device; after completing expansion setting of the expansion suspension device, utilizing the weight of an upper drilling tool to start expansion of the expandable casing from top to bottom until expansion of all the expandable casing is finished, and then pulling out an inner tube tool. The top-down expandable casing expansion method for a deep well can avoid the defect that as a conventional top-down expansion method excessively depends on hydraulic pressure expansion, once a pressure cavity loses efficacy, expansion fails, because the top-down expandable casing expansion method for a deep well utilizes the weight of the upper drilling tool to carry out mechanical expansion on the expandable casing below the expansion suspension device after using hydraulic pressure to perform expansion on the expansion suspension device. The top-down expandable casing expansion method for a deep well can be widely applied to the field of deep well expandable casing completion and drilling well plugging.
Description
Technical field
The present invention relates to the drilling completion technical field in oil and gas industry, it is a kind of top-down expansion sleeve expanding method of the deep-well that is drilled in well operations of deep-well expansion sleeve.
Background technology
With deepening continuously for domestic and international oil field development, petroleum works are faced with the difficult problem of " new well hardly possible is beaten, old well difficulty is repaiied ", seriously constrain old area stable yields and new zone development.Tail pipe well drilling completion internal diameter is little, tail tube head is easily missed, and later stage production is limited；In deep ＆ ultra-deep well, a Complex formation drilling difficult problem is continued to increase, and is easily bored and is met the bad grounds such as leakage, high pressure and be difficult to reach drilling well purpose.The expansion sleeve technology of above-mentioned bottleneck can be effectively released, since researching and developing the nineties in last century from offshore company, has been flourished, be an emerging technology with " revolutionary character ".
Existing expansion sleeve operational method is that the mode using hydrostatic plus mechanical after well cementing impact pressure is expanded to expansion sleeve from bottom to top, and most back seat hangs expansion hanger.Patent CN201210382827 provides a kind of top pressure-bearing type expansion tube construction operation method；Patent CN201080038174 provides a kind of system and method for expandable tubular is anchored to borehole wall.Expansion sleeve operational method is to adopt to carry out expansion operation from bottom to top at present on the whole.On the whole, existing operating type construction risk is larger, and ground needs continuous high-pressure operation, the person and equipment safety to there is larger hidden danger, and the activity duration is longer, seriously constrains the development of expansion sleeve technology.
The content of the invention
The purpose of the present invention is to bore the problem that completion technique is present for existing deep-well, ultradeep well expansion sleeve, a kind of deep-well is provided with top-down expansion sleeve expanding method, can overcome the shortcomings of that the conventional expansion sleeve operating type for carrying out from bottom to top depends on hydraulic buckling unduly, operating type is more safe and reliable.
What the present invention was realized in：
A kind of deep-well with top-down expansion sleeve expanding method, including：（1）After expansion sleeve and expansion tool combination under lower going-into-well,（2）Cementing is replaced and starches and shear Compounded rubber plug bruising,（3）Sit and hang expansion hanger,（4）Expansion sleeve pipe,（5）Act expansion tool；Wherein：Step（1）In expansion sleeve upper end connection expansion hanger, lower end connects built-in well cementation adnexa；Expansion tool is sleeved in expansion sleeve, including expansion cone hydraulic booster, expansion cone, the plug shearing pipe nipple being connected in turn on central canal from top to bottom, and shears the hollow rubber plug that pipe nipple is connected with plug；Central canal is connected with top drilling tool, and expansion cone hydraulic booster is placed in inside expansion hanger and constitutes sealing with expansion hanger inwall and is slidably matched, and expansion cone is cone symmetrical structure up and down, and expansion cone is provided with axially extending bore；Step（2）Drilling rod plug is put into from top drilling tool after middle cemented up slurry, replacing cement mortar promotes drilling rod plug to be combined to hollow rubber plug, the Compounded rubber plug that cement mortar pressure suppresses drilling rod plug and hole heart plug composition is improved, continues to replace promotion Compounded rubber plug to adnexa bruising of cementing the well；Step（3）Improve cement mortar pressure to move axially upwards along expansion hanger using hydraulic drive expansion cone hydraulic booster, pull expansion cone to move axially upwards along expansion hanger simultaneously and hang until completing expansion hanger expansion seat, realize that the suspension to whole external expansion sleeve pipe is positioned；Step（4）Expansion tool is pushed using top drilling tool weight, the top-down expansion of expansion sleeve is realized.
Such scheme also includes：Expansion sleeve is extension diameter section with expansion hanger linkage section, and expansion sleeve lower end is extension diameter section, and adnexa of cementing the well includes that impacting seat, float collar and guide shoe are placed in extension diameter section.Expansion cone is connected with central canal by expansion cone support axle.
It is an advantage of the current invention that：
（1）Can be overcome using top-down expansion fashion expansion sleeve pipe causes expansion sleeve operation to fail due to pressure chamber failure, farthest reduces construction risk.
（2）Only can there is ground operations involving high pressure when expansion hanger seat is hung using top-down expansion fashion, without the need for Operating Pressure during normal expansion expansion sleeve, substantially reduce job safety.
（3）The activity duration that each column of traditional expansion fashion from bottom to top connects well head high pressure pipe joint can be saved using top-down expansion fashion, the activity duration is greatlyd save.
Description of the drawings
Schematic diagram under lower going-into-well after a kind of expansion sleeve of specific embodiment of Fig. 1 present invention and expansion tool combination；
Fig. 2 well cementation is for slurry process schematic；
Fig. 3 impacting seats hang expansion hanger schematic diagram；
Fig. 4 expansion sleeve pipe schematic diagrams from top to bottom；
Fig. 5 is expanded to expansion sleeve bottom schematic view；
Fig. 6 acts the casing programme schematic diagram after expansion tool；
In figure：1. protective casing, 2. top drilling tool, 3. expansion hanger, 4. expansion cone hydraulic booster, 5. expansion cone, 6. expansion cone support axle, 7. plug shearing pipe nipple, 8. hollow rubber plug, 9. expansion sleeve, 10. impacting seat, 11. float collars, 12. guide shoes, 13. drilling rod plugs.
Specific embodiment
In conjunction with Figure of description, the invention will be further described.
As shown in figs. 1 to 6, a kind of deep-well is with top-down expansion sleeve expanding method, mainly by following steps：（1）After expansion sleeve 9 and expansion tool combination under lower going-into-well,（2）Cement injection is replaced（Referred to as slurry）And shear 8 bruising of hollow rubber plug,（3）Sit and hang expansion hanger 3,（4）Expansion sleeve pipe 9 from top to bottom,（5）Act expansion tool and complete the steps such as subsequent job composition.
Step（1）Particular content as shown in figure 1, including：
Inner tube string is made up of top drilling tool 2, expansion cone hydraulic booster 4, expansion cone 5, expansion cone support axle 6, plug shearing pipe nipple 7, hollow rubber plug 8, and wherein expansion cone hydraulic booster 4, expansion cone 5, expansion cone support axle 6, plug are sheared.Exterior tube string is made up of expansion hanger 3, expansion sleeve 9, impacting seat 10, float collar 11, guide shoe 12, and wherein impacting seat 10, float collar 11, guide shoe 12 collectively form built-in well cementation adnexa.Expansion sleeve 9 is gone here and there respectively one section of expansion sleeve expanded in advance up and down, and top is connected with expansion hanger 3, and built-in well cementation adnexa is pre-installed in bottom.In inner tube string, expansion cone is about 5 with angled symmetrical structure, is capable of achieving expansion of the both direction to outer tube string up and down, and expansion cone 5 is machined with axially extending bore, discharges liquid in pipe when can expand to expansion sleeve 9 from top to bottom.Expansion cone hydraulic booster 4 is connected on 5 top of expansion cone, expansion cone hydraulic booster 4 expansion hanger 3 sit hang before with 3 inwall of expansion hanger be it is in sealing contact, can be moved axially by fluid power effect upwards after bruising, expansion cone is pulled to move axially upwards along expansion hanger 3 simultaneously, expansion hanger 3 is hung so as to sit, after expansion hanger 3 is sat and hung, sealing surface failure does not affect to carry out expansion sleeve 9 from top to bottom to expand.
Step（2）As shown in Fig. 2 well cementing operation is carried out according to design requirement, urge it into for slurry from the input drilling rod of top drilling tool 2 plug 13 after cemented up slurry and be combined at hollow rubber plug 8.The Compounded rubber plug that pressure suppresses 8 composition of drilling rod plug 13 and hole heart plug is improved, and is continued to replace and Compounded rubber plug is promoted to bruising at impacting seat 10.
Step（3）As shown in Figure 3, improve pressure to move axially upwards along expansion hanger 3 using hydraulic drive expansion cone hydraulic booster 4, pull expansion cone 5 to move axially upwards along expansion hanger 3 simultaneously and hang until completing the expansion seat of expansion hanger 3, realize that the suspension to whole exterior tube string is positioned.
Step（4）As shown in figure 4, inner tube string is pushed using 2 weight of top drilling tool, realize the top-down expansion of expansion sleeve 9.Down thrust suffered by 9 pipe string of expansion sleeve is born by expansion hanger 3, and it is constant that whole pipe string is positively retained at position in well.Liquid in expansion sleeve 9 is discharged upwards by the outage in expansion cone 5, does not affect expansion process.
As shown in figure 5, ground continues to access drilling tool downwards to the enforcement expansion of whole expansion sleeves 9, until completing the expansion of whole expansion sleeves 9.
Step（5）As shown in fig. 6, above carrying inner tube string, in addition at Compounded rubber plug indwelling impacting seat 10, other parts are proposed completely, are completed 9 operation of whole expansion sleeve, are carried out subsequent job according to design requirement.
It is of the invention to realize positioning then pipe string the operating type of expansion sleeve pipe 9 from top to bottom using first expansion seat extension expansion hanger 3, operating risk can effectively be reduced, increase the person and device security, the activity duration is greatlyd save, the fields such as deep-well expansion sleeve completion, drilling well closure are can be widely used for.
Claims (3)
1. a kind of deep-well is with top-down expansion sleeve expanding method, including：（1）After expansion sleeve and expansion tool combination under lower going-into-well,（2）Cementing is replaced and starches and shear Compounded rubber plug bruising,（3）Sit and hang expansion hanger,（4）Expansion sleeve pipe,（5）Act expansion tool；It is characterized in that：Step（1）In expansion sleeve upper end connection expansion hanger, lower end connects built-in well cementation adnexa；Expansion tool is sleeved in expansion sleeve, including expansion cone hydraulic booster, expansion cone, the plug shearing pipe nipple being connected in turn on central canal from top to bottom, and shears the hollow rubber plug that pipe nipple is connected with plug；Wherein, central canal is connected with top drilling tool, and expansion cone hydraulic booster is placed in inside expansion hanger and constitutes sealing with expansion hanger inwall and is slidably matched, and expansion cone is cone symmetrical structure up and down, and expansion cone is provided with axially extending bore；Step（2）Drilling rod plug is put into from top drilling tool after middle cemented up slurry, replacing cement mortar promotes drilling rod plug to be combined to hollow rubber plug, the Compounded rubber plug that cement mortar pressure suppresses drilling rod plug and hole heart plug composition is improved, continues to replace promotion Compounded rubber plug to adnexa bruising of cementing the well；Step（3）Improve cement mortar pressure to move axially upwards along expansion hanger using hydraulic drive expansion cone hydraulic booster, pull expansion cone to move axially upwards along expansion hanger simultaneously and hang until completing expansion hanger expansion seat, realize that the suspension to whole external expansion sleeve pipe is positioned；Step（4）Expansion tool is pushed using top drilling tool weight, the top-down expansion of expansion sleeve is realized.
2. deep-well according to claim 1 is characterized in that with top-down expansion sleeve expanding method：Expansion sleeve is extension diameter section with expansion hanger linkage section, and expansion sleeve lower end is extension diameter section, and adnexa of cementing the well includes that impacting seat, float collar and guide shoe are placed in extension diameter section.
3. deep-well according to claim 1 and 2 is characterized in that with top-down expansion sleeve expanding method：Expansion cone is connected with central canal by expansion cone support axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655324.3A CN106567687A (en) | 2015-10-12 | 2015-10-12 | Top-down expandable casing expansion method for deep well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510655324.3A CN106567687A (en) | 2015-10-12 | 2015-10-12 | Top-down expandable casing expansion method for deep well |
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| CN106567687A true CN106567687A (en) | 2017-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267963A (en) * | 2018-08-22 | 2019-01-25 | 中国石油集团长城钻探工程有限公司 | A kind of equal hole diameters expansion sleeve blocking method |
| CN110905428A (en) * | 2019-12-17 | 2020-03-24 | 淮安市井神钻采机具有限公司 | Composite super-expansion cementing liner hanger |
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| WO2007090338A1 (en) * | 2006-02-06 | 2007-08-16 | Xiaoyong Li | A hydraulic diameter variable casing expansion method and apparatus |
| CN201412097Y (en) * | 2009-06-05 | 2010-02-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion type hanger for expansion sieve tube |
| CN101906946A (en) * | 2009-06-04 | 2010-12-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion-type rotary liner hanger |
| CN102979470A (en) * | 2012-12-07 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Uncemented expansion tail pipe hanger |
| CN103089183A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Double bellmouth type expansion sleeve packing tool and operating method thereof |
| CN202946068U (en) * | 2012-12-06 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Small-size expansion hanger |
| CN104153735A (en) * | 2014-07-24 | 2014-11-19 | 中国石油天然气股份有限公司 | Expansion pipe repairing device |
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2015
- 2015-10-12 CN CN201510655324.3A patent/CN106567687A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007090338A1 (en) * | 2006-02-06 | 2007-08-16 | Xiaoyong Li | A hydraulic diameter variable casing expansion method and apparatus |
| CN101906946A (en) * | 2009-06-04 | 2010-12-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion-type rotary liner hanger |
| CN201412097Y (en) * | 2009-06-05 | 2010-02-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Hydraulic expansion type hanger for expansion sieve tube |
| CN103089183A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Double bellmouth type expansion sleeve packing tool and operating method thereof |
| CN202946068U (en) * | 2012-12-06 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Small-size expansion hanger |
| CN102979470A (en) * | 2012-12-07 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Uncemented expansion tail pipe hanger |
| CN104153735A (en) * | 2014-07-24 | 2014-11-19 | 中国石油天然气股份有限公司 | Expansion pipe repairing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267963A (en) * | 2018-08-22 | 2019-01-25 | 中国石油集团长城钻探工程有限公司 | A kind of equal hole diameters expansion sleeve blocking method |
| CN110905428A (en) * | 2019-12-17 | 2020-03-24 | 淮安市井神钻采机具有限公司 | Composite super-expansion cementing liner hanger |
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Application publication date: 20170419 |