CN106761593A - A kind of bad ground pretreating process - Google Patents
A kind of bad ground pretreating process Download PDFInfo
- Publication number
- CN106761593A CN106761593A CN201611149295.4A CN201611149295A CN106761593A CN 106761593 A CN106761593 A CN 106761593A CN 201611149295 A CN201611149295 A CN 201611149295A CN 106761593 A CN106761593 A CN 106761593A
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- expansion
- piston
- bad ground
- solid
- tool
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 22
- 238000004513 sizing Methods 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/105—Expanding tools specially adapted therefor
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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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 present invention relates to expansion tube closure stratum technical field, more particularly to a kind of bad ground pretreating process.The processing step is as follows：First, bore meet bad ground after, first start boring tool of following drilling to bad ground and its it is upper and lower 3~5 meters in the range of carry out sizing reaming hole；2nd, first time expansion process：Under enter solid expansion pipe, make solid expansion pipe two ends be located at upper and lower 3~5 meters of bad ground position, enter expansion system under bad ground position.The present invention realizes expansion tube and can be anchored on the borehole wall, expansion tube body and screw thread need not bear high pressure, detent mechanism is provided between expansion tool and expansion tube, it is to avoid expansion tube slides, expansive force is strong, expansion effect is good, bad ground can effectively be blocked, not influenceed subsequent job, it is not necessary to bored mill bottom and block up, construction risk and difficulty of construction are reduced, construction cost is reduced.
Description
Technical field：
The present invention relates to expansion tube closure stratum technical field, more particularly to a kind of bad ground pretreating process.
Background technology：
As petroleum exploration and development constantly develops to deep layer, ultra deep and bad ground, the leakage for running into is bored in drilling process
Lose layer, collapse layer and high pressure zone it is more and more.In drilling process, running into situations such as severe well leakage, cave-in cannot enter
Row effectively treatment, brings drilling period to extend, cost increases, can not even bore serious consequence up to target zone to drilling team.Therefore,
Research new technology is pre-processed to bad ground, reduces drilling cost, exploration and development progress is advanced, with highly important meaning
Justice.
It is exactly the new skill that fast development is got up in this context Deng hole diameter bad ground pretreating process technology
Art.The technology is to be lowered into expansion sleeve to have carried out the bad ground well section of sizing reaming, and expansion tube is made by expansion tool
Generation radial plastic deformation, and be close on the borehole wall, one layer " artificial borehole wall " closure bad ground is formed, prevent it from being led after deteriorating
Cause the drilling failures such as severe mud losses, cave-in and bit freezing.Borehole diameter is not being reduced Deng hole diameter bad ground pretreating process
In the case of can realize effectively closure, and with reliability is high, low cost, cycle is short, employ equipment it is few the characteristics of, recognized
For be lost-circulation zone, the core technology of the bad ground such as the layer that collapses, high pressure zone pretreatment.
But existing expansion tube closure ground method has the following disadvantages：1st, in expansion operation process, by bottom it is stifled with
Between expansion cone high pressure chest provide expansion power, by expansion tube body and screw thread bearing capacity limited, there is provided expansive force it is limited,
It is difficult to make expansion tube be fitted tightly on the borehole wall, plugging effect is undesirable；2nd, detent mechanism is not set between expansion cone and expansion tube,
Relative slip may occur during expansion operation；3rd, without anchor mechanism between expansion tube and the borehole wall, feeding drilling tool is easy to expansion
Pipe slides, and only next step expansion positioning does not make troubles, or even causes packing element heavy wear, does not reach the complicated layer of closure
The purpose of position.
The content of the invention：
The technical problem to be solved in the present invention is to provide a kind of bad ground pretreating process, and the technique realizes expansion tube
Can be anchored on the borehole wall, expansion tube body and screw thread need not bear high pressure, and positioning is provided between expansion tool and expansion tube
Mechanism, it is to avoid expansion tube slides, expansive force is strong, and expansion effect is good, and bad ground effectively can be blocked, and does not influence
Subsequent job, it is not necessary to bore mill bottom and block up, reduce construction risk and difficulty of construction, reduce construction cost.Overcome existing expansion tube
Closure ground method expansive force is limited, and expansion tube easily slides, and causes packing element heavy wear, and plugging effect is undesirable not
Foot.
The technical solution used in the present invention is：A kind of bad ground pretreating process, the processing step is as follows：
First, after chance bad ground is bored, boring tool of following drilling is first started to bad ground and its upper and lower 3~5 meters of scope
Inside carry out sizing reaming hole；
2nd, first time expansion process：Under enter solid expansion pipe, make solid expansion pipe two ends be located at bad ground upper and lower 3
~5 meters of position, expansion system is entered under bad ground position；Expansion system includes central tube, and central tube upper end is bored with feeding
Tool is connected, and central tube lower end is connected with piston stayed mast, piston stayed mast upper end connection lifting force piston, piston stayed mast
Lower end is penetrated in cone seat body through tubing string internal anchor, tubing string internal anchor upper end connection lower thrust piston, lifting force
Opening is provided with piston stayed mast between piston and lower thrust piston, piston stayed mast bottom is set with one-stage expansion cone,
Piston stayed mast bottom inwall is provided with ball seat, and compound expansion cone is set with cone seat body；Input ball sealer, ball sealer is setting
On the ball seat of piston stayed mast, suppressed by central tube, drilling fluid enters lifting force by the opening on piston stayed mast
Pressure chamber between piston and lower thrust piston, and then tubing string internal anchor is anchored to entity into tubing string internal anchor
On expansion inside pipe wall, hydraulic drive lifting force piston stroking upward and then band piston stayed mast, one-stage expansion bore up, one-stage expansion
Cone is radially expanded solid expansion pipe lower end, so that the bore hole anchor expansion grappling of triggering entity expansion tube lower end outside
In on the borehole wall, after completing grappling etc. bore hole anchor, being lifted by well head makes piston stayed mast up and then drive one-stage expansion
Cone is up, and piston stayed mast bottom drives cone seat body up and then drives compound expansion cone up, so that solid expansion pipe
Expand, after the completion of Solid expandable tube swelling, propose expansion system；
3rd, second expansion process：Under enter hydraulic reducing expansion tool, make hydraulic reducing expansion tool conical section position
In behind solid expansion pipe lower end, input ball to hydraulic reducing expansion tool bottom ball seat, suppressed on ground, reducing expansion cone closure
To design size, after hydraulic reducing expansion tool is closed completely, from well head lifting feeding drilling tool, the is carried out to solid expansion pipe
Reexpansion, makes solid expansion pipe be close on the borehole wall, and upper cartridge of the vulcanization on the outside of solid expansion pipe upper and lower side is with
Cartridge automatic expansion, plays a part of to insulate bad ground, after solid expansion pipe has all expanded, carries out pressure release, liquid
Fashionable size under pressing reducing expansion tool external diameter to be contracted to originally, acts hydraulic reducing expansion tool by sending into drilling tool.
The beneficial effects of the invention are as follows：The present invention realizes expansion tube and can be anchored on the borehole wall, expands tube body and spiral shell
Line need not bear high pressure, and detent mechanism is provided between expansion tool and expansion tube, it is to avoid expansion tube slides, expansive force
By force, expansion effect is good, and bad ground effectively can be blocked, and does not influence subsequent job, it is not necessary to bores mill bottom and blocks up, reduction is applied
Work risk and difficulty of construction, reduce construction cost.
Brief description of the drawings：
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of expansion system.
Fig. 2 is bore hole anchor grappling schematic diagram.
Fig. 3 is solid expansion pipe expansion schematic diagram for the first time.
Fig. 4 is that expansion system proposes schematic diagram.
Fig. 5 be hydraulic reducing expansion tool under enter schematic diagram.
Fig. 6 is that hydraulic reducing expansion tool closes schematic diagram.
Fig. 7 expands schematic diagram for the second time for solid expansion pipe.
Fig. 8 is that hydraulic reducing expansion tool proposes schematic diagram.
Specific embodiment：
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, a kind of bad ground pretreating process, technique step
It is rapid as follows：
First, after chance bad ground is bored, boring tool of following drilling is first started to bad ground and its upper and lower 3~5 meters of scope
Inside carry out sizing reaming hole；
2nd, first time expansion process：Under enter solid expansion pipe 8, make solid expansion pipe 8 two ends be located at bad ground it is upper and lower
3~5 meters of position, expansion system is entered under bad ground position；Expansion system includes central tube 7, the upper end of central tube 7 and feeding
Drilling tool 10 is connected, and the lower end of central tube 7 is connected with piston stayed mast 13, and the upper end of piston stayed mast 13 connects lifting force piston 6,
The lower end of piston stayed mast 13 is penetrated in cone seat body 12 through tubing string internal anchor 5, under the connection of the upper end of tubing string internal anchor 5
Thrust piston 14, is provided with opening, lifting force piston on the piston stayed mast 13 between lifting force piston 6 and lower thrust piston 14
Pressure chamber is formed between 6 and lower thrust piston 14, the inside of tubing string internal anchor 5 is connected with pressure chamber, piston stayed mast 13
Bottom be set with one-stage expansion cone 2, the bottom inwall of piston stayed mast 13 is provided with ball seat, be set with cone seat body 12 two grades it is swollen
Swollen cone 1；Input ball sealer, sealed ball seat is enclosed on the ball seat of piston stayed mast 13, is suppressed by central tube 7, and drilling fluid passes through
The pressure chamber that opening on piston stayed mast 13 enters between lifting force piston 6 and lower thrust piston 14, and then enter tubing string
Internal anchor 5 makes tubing string internal anchor 5 be anchored on the inwall of solid expansion pipe 8, is advanced on hydraulic drive lifting force piston 6
And band piston stayed mast 13, one-stage expansion cone 2 is up, one-stage expansion cone 2 is radially expanded the lower end of solid expansion pipe 8,
So as to the expansion of bore hole anchor 3 of the lower end outside of triggering entity expansion tube 8 is anchored on the borehole wall, anchor is completed etc. bore hole anchor 3
After fixed, being lifted by well head is made piston stayed mast 13 up and then drives one-stage expansion to bore 2 up, the bottom bands of piston stayed mast 13
Mantle seat pipe body 12 is up and then drives compound expansion cone 1 up, so that solid expansion pipe 8 is expanded, solid expansion pipe 8
After the completion of expansion, expansion system is proposed；
3rd, second expansion process：Under enter hydraulic reducing expansion tool 11, make the cone portion of hydraulic reducing expansion tool 11
Divide and be located at the lower end of solid expansion pipe 8, after input ball to the bottom ball seat of hydraulic reducing expansion tool 11, suppressed on ground, reducing is swollen
Swollen cone is closed to design size, after hydraulic reducing expansion tool 11 is closed completely, from well head lifting feeding drilling tool 10, to entity
Expansion tube 8 carries out second expansion, solid expansion pipe 8 is close on the borehole wall, vulcanizes on the outside of the upper and lower side of solid expansion pipe 8
Upper cartridge 9 and the lower automatic expansion of cartridge 4, play a part of to insulate bad ground, when all expansions of solid expansion pipe 8
After complete, carry out pressure release, the external diameter of hydraulic reducing expansion tool 11 be contracted to it is original under fashionable size, go out liquid by sending into drilling tool 10
Pressure reducing expansion tool 11.
It is understood that above with respect to specific descriptions of the invention, being merely to illustrate the present invention and being not limited to this
Technical scheme described by inventive embodiments, it will be understood by those within the art that, still the present invention can be carried out
Modification or equivalent, to reach identical technique effect；As long as satisfaction use needs, all protection scope of the present invention it
It is interior.
Claims (1)
1. a kind of bad ground pretreating process, it is characterised in that：The processing step is as follows：
First, bore meet bad ground after, first start boring tool of following drilling to bad ground and its it is upper and lower 3~5 meters in the range of enter
Row sizing reaming hole；
2nd, first time expansion process：Under enter solid expansion pipe (8), make solid expansion pipe (8) two ends be located at bad ground it is upper and lower
3~5 meters of position, expansion system is entered under bad ground position；Expansion system include central tube (7), central tube (7) upper end with
Feeding drilling tool (10) is connected, and central tube (7) lower end is connected with piston stayed mast (13), the connection of piston stayed mast (13) upper end
Lifting force piston (6), piston stayed mast (13) lower end is penetrated in cone seat body (12) through tubing string internal anchor (5), tubing string
Internal anchor (5) upper end connects lower thrust piston (14), and the piston between lifting force piston (6) and lower thrust piston (14) draws
Opening is provided with power bar (13), piston stayed mast (13) bottom is set with one-stage expansion cone (2), piston stayed mast (13) bottom
Inwall is provided with ball seat, and compound expansion cone (1) is set with cone seat body (12)；Input ball sealer, sealed ball seat is enclosed in piston
On the ball seat of stayed mast (13), suppressed by central tube (7), drilling fluid enters upper by the opening on piston stayed mast (13)
Pressure chamber between thrust piston (6) and lower thrust piston (14), and then make tubing string inside anchor into tubing string internal anchor (5)
Determine device (5) to be anchored on solid expansion pipe (8) inwall, hydraulic drive lifting force piston (6) is up and then with piston stayed mast
(13), one-stage expansion cone (2) is up, and one-stage expansion cone (2) is radially expanded solid expansion pipe (8) lower end, so as to trigger
Bore hole anchor (3) expansion of solid expansion pipe (8) lower end outside is anchored on the borehole wall, and grappling is completed etc. bore hole anchor (3)
Afterwards, being lifted by well head is made piston stayed mast (13) up and then drives one-stage expansion cone (2) up, piston stayed mast (13) bottom
End drives cone seat body (12) up and then drives compound expansion cone (1) up, so that solid expansion pipe (8) is expanded,
After the completion of solid expansion pipe (8) expansion, expansion system is proposed；
3rd, second expansion process：Under enter hydraulic reducing expansion tool (11), make the cone portion of hydraulic reducing expansion tool (11)
Divide and be located at solid expansion pipe (8) lower end, after input ball to hydraulic reducing expansion tool (11) bottom ball seat, suppressed on ground, become
Footpath expansion cone is closed to design size, after hydraulic reducing expansion tool (11) is closed completely, from well head lifting feeding drilling tool
(10) second expansion, is carried out to solid expansion pipe (8), solid expansion pipe (8) is close on the borehole wall, vulcanized in Solid expandable
Upper cartridge (9) and lower cartridge (4) automatic expansion on the outside of pipe (8) upper and lower side, play a part of to insulate bad ground,
After solid expansion pipe (8) has all expanded, pressure release is carried out, hydraulic reducing expansion tool (11) external diameter is fashionable under being contracted to originally
Size, acts hydraulic reducing expansion tool (11) by sending into drilling tool (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149295.4A CN106761593B (en) | 2016-12-14 | 2016-12-14 | A kind of bad ground pretreating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149295.4A CN106761593B (en) | 2016-12-14 | 2016-12-14 | A kind of bad ground pretreating process |
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| Publication Number | Publication Date |
|---|---|
| CN106761593A true CN106761593A (en) | 2017-05-31 |
| CN106761593B CN106761593B (en) | 2019-03-15 |
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| CN201611149295.4A Active CN106761593B (en) | 2016-12-14 | 2016-12-14 | A kind of bad ground pretreating process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246249A (en) * | 2017-08-07 | 2017-10-13 | 南充西南石油大学设计研究院有限责任公司 | Cage shell type drilling leakage blockage device and drilling leakage blockage method |
| CN108119069A (en) * | 2017-12-21 | 2018-06-05 | 中国石油天然气集团公司 | The device transferred for tubing string in expansion tube bore hole system |
| 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 |
| CN109667565A (en) * | 2019-02-01 | 2019-04-23 | 中国地质科学院勘探技术研究所 | A kind of open-hole anchor and process |
| CN110805409A (en) * | 2019-07-12 | 2020-02-18 | 大港油田集团有限责任公司 | Expansion pipe plugging method based on repeated fracturing cased well |
| WO2020244303A1 (en) * | 2019-06-06 | 2020-12-10 | 安东柏林石油科技（北京）有限公司 | Artificial borehole wall for preventing mudstone layer mud from being produced or channeling, forming method and well completion structure |
| CN112878957A (en) * | 2021-03-15 | 2021-06-01 | 西南石油大学 | Well cementation method and tool for enhancing shearing performance of stratum slippage section casing |
| CN114135244A (en) * | 2021-11-30 | 2022-03-04 | 西南石油大学 | Hydraulic variable-level expansion tool for plugging while drilling and process method |
| CN117552738A (en) * | 2024-01-09 | 2024-02-13 | 易盘达石油科技有限公司 | Oil well casing repairing tubular column and construction method |
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| CN105484695A (en) * | 2015-12-30 | 2016-04-13 | 中国石油天然气集团公司 | Mechanical hydraulic double-acting expansion device suitable for expansion tube drilling |
| CN105992859A (en) * | 2013-12-05 | 2016-10-05 | 哈利伯顿能源服务公司 | Liner hanger setting tool and method for use of same |
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| CN201567992U (en) * | 2009-12-16 | 2010-09-01 | 中国石油天然气集团公司 | Expansion tool for equal diameter drill completion |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246249A (en) * | 2017-08-07 | 2017-10-13 | 南充西南石油大学设计研究院有限责任公司 | Cage shell type drilling leakage blockage device and drilling leakage blockage method |
| CN108119069A (en) * | 2017-12-21 | 2018-06-05 | 中国石油天然气集团公司 | The device transferred for tubing string in expansion tube bore hole system |
| CN108119069B (en) * | 2017-12-21 | 2023-12-26 | 中国石油天然气集团有限公司 | Device for lowering tubular column in open hole system of expansion pipe |
| 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 |
| CN109667565A (en) * | 2019-02-01 | 2019-04-23 | 中国地质科学院勘探技术研究所 | A kind of open-hole anchor and process |
| CN109667565B (en) * | 2019-02-01 | 2021-09-14 | 中国地质科学院勘探技术研究所 | Bare hole anchoring device and process method |
| WO2020244303A1 (en) * | 2019-06-06 | 2020-12-10 | 安东柏林石油科技（北京）有限公司 | Artificial borehole wall for preventing mudstone layer mud from being produced or channeling, forming method and well completion structure |
| CN110805409A (en) * | 2019-07-12 | 2020-02-18 | 大港油田集团有限责任公司 | Expansion pipe plugging method based on repeated fracturing cased well |
| CN112878957A (en) * | 2021-03-15 | 2021-06-01 | 西南石油大学 | Well cementation method and tool for enhancing shearing performance of stratum slippage section casing |
| CN114135244A (en) * | 2021-11-30 | 2022-03-04 | 西南石油大学 | Hydraulic variable-level expansion tool for plugging while drilling and process method |
| CN117552738A (en) * | 2024-01-09 | 2024-02-13 | 易盘达石油科技有限公司 | Oil well casing repairing tubular column and construction method |
| CN117552738B (en) * | 2024-01-09 | 2024-03-12 | 易盘达石油科技有限公司 | Oil well casing repairing tubular column and construction method |
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Effective date of registration: 20201022 Address after: No. 6, liupukang, Xicheng District, Beijing 100120 Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |