CN103899264A - Lift prestress ground anchor device for well cementation and completion on top of screen pipe of oil-gas well and application method - Google Patents
Lift prestress ground anchor device for well cementation and completion on top of screen pipe of oil-gas well and application method Download PDFInfo
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- CN103899264A CN103899264A CN201210578869.5A CN201210578869A CN103899264A CN 103899264 A CN103899264 A CN 103899264A CN 201210578869 A CN201210578869 A CN 201210578869A CN 103899264 A CN103899264 A CN 103899264A
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Abstract
The invention relates to a lift prestress ground anchor device for well cementation and completion on the top of a screen pipe of an oil-gas well and an application method. According to the device, a center pipe is sleeved with a hydraulic cylinder outer sleeve, a piston, a push base, a pull rod, an anchor jaw and a fixing sleeve; a plurality of radial liquid inlet holes are formed in the center pipe. The application method of the device includes the steps that a well completion pipe string comprising a well cementation circulating switch, a packer outside the pipe, the lift prestress ground anchor device for well cementation and completion on the top of the screen pipe of the oil-gas well, a blind plate, the screen pipe and a guiding shoe is lowered in the oil-gas well; pressurization is performed on the well mouth, and the anchor jaw of the lift prestress ground anchor device for well cementation and completion on the top of the screen pipe of the oil-gas well is opened; the pipe string is lifted up to a set tonnage; pressurization continues to be performed, and the packer outside the pipe is expanded and sealed; pressurization continues to be performed, the well cementation circulating switch is switched on, and circulation well cementation is performed; after cement condensation ends, a drill bit is lowered to drill the blind plate to drill through the well to the bottom, and operation is completed. The device has the advantages that the device is used for the horizontal well screen pipe well completion technology, and the problem that lift prestress well cementation cannot be performed through the current screen pipe well completion technology is solved.
Description
Technical field
A kind of Oil/gas Well screen casing top well cementation completion that the present invention relates to oil and gas industry drilling completion technical field lifts prestressed ground anchor device and methods for using them, is particularly suitable for horizontal well thermal recovery screen casing crest water flooding bricklayer's skill.
Background technology
Heat extraction by steam injection can effectively improve viscous crude well yield, still, because inject 300 DEG C of above high-temperature steams in well, can cause the elongation strain of well inner sleeve, on sleeve pipe, alter the well head of emerging, the cement sheath between sleeve pipe and the borehole wall is damaged, have a strong impact on the Production Life of oil well.In order to address this problem, effective method is that the sleeve pipe of viscous crude Oil/gas Well is lifted to prestressing force, first makes sleeve pipe extend and cements the well, offsets the deformation of steam injection rear sleeve.
The method that lifts at present special cementing mainly contains following two kinds:
One, first inject one section of cement in shaft bottom, admittedly live one section of sleeve pipe, then upper sleeve is lowered to counterpart and lifts, or uses " two solidifying cement ", and bottom cement setting is fast, and when taking advantage of bottom and condensing top Hou Ning, lifts sleeve pipe.But said method or operation easier are large, are constructed into power low, or construction risk is large, and therefore on-the-spot application is less.
Two, use solid earth anchor.The general foot using at pipe string of this solid earth anchor, with the partial function of float collar, can normally cement the well, and after well cementation, is that anchor fluke opens by bruising, and grappling stratum, realizes the object lifting.The earth anchor of this structure is applied more in casing cementing well-completing process.
But sieve tube completion technique has become the main technique of horizontal well completion at present, and taking Shengli Oil Field as example, sieve tube completion has accounted for the more than 60% of whole horizontal well completions.Sieve tube completion technique is faced with the problem of viscous crude Oil/gas Well casing deformation equally, and above-mentioned two kinds of mentioning lift prestressed method, one is on the verge of being replaced, another kind of solid earth anchor is generally placed in whole pipe string foot, in well cementing process, complete grappling, but the earth anchor of this structure is not suitable for sieve tube completion technique.Therefore, lifting prestressing apparatus and lifting prestressing method in the urgent need to a kind of applicable heavy crude heat extraction horizontal well sieve tube well-completing process.
Summary of the invention
The object of the invention is the problem existing for prior art, provide a kind of Oil/gas Well screen casing top well cementation completion to lift prestressed ground anchor device and methods for using them, cannot lift prestressing force problem to solve heavy crude heat extraction horizontal well sieve tube completion.
The technical solution adopted in the present invention
First, well cementation completion in Oil/gas Well screen casing top lifts the technical scheme of prestressed ground anchor device and is: be set with successively fluid cylinder overcoat 3, piston 5 in central tube 2 outsides from top to bottom, promote base 7, pull bar 8, anchor fluke 9 and fixed cover 10; Wherein, fluid cylinder overcoat 3 is fixedly connected with central tube 2 with fixed cover 10; Piston 5 be placed in fluid cylinder overcoat 3 and the annular piston chamber that forms at central tube 2 in, and form slipper seal with annular piston chamber and coordinate; On position at central tube 2 near piston 5 tops, offer several radially inlet openings 4; Promote base 7 and dock or integrated connection with piston 5 bottoms, promote pull bar 8 hinges of base 7 and bottom; Middle part hinge on pull bar 8 bottoms and anchor fluke 9; Anchor fluke 9 underneath hinges are on fixed cover 10.
The scheme of said apparatus further comprises:
On central tube 2, be processed with the limited step being fixed with piston 5, central tube 2 upper and lower sides are all processed with nipple.
Promote base 7 and fluid cylinder overcoat 3 in the time of original state, be connected by radially-arranged pin 6.
Between fluid cylinder overcoat 3 and central tube 2, be threaded fixing, fixed cover 10 is connected and fixed with central tube 2 by lower helmet 11, the end face chamfering of fluid cylinder overcoat 3 and lower helmet 11.
On fixed cover 10, be processed with vertically sliding rail, pull bar 8 bottoms and anchor fluke 9 are arranged in sliding rail.
Secondly the present invention also provides a kind of application process that lifts prestressed ground anchor device according to aforementioned Oil/gas Well screen casing top well cementation completion, comprises the following steps:
(1), comprise that to being lowered in Oil/gas Well well cementation cycling switch 12, external packer of pipe 13, Oil/gas Well screen casing top well cementation completion lift the completion pipe string that prestressed ground anchor device 14, blind plate 15, screen casing 16, guide shoe 17 form;
(2), well head suppresses, and opens Oil/gas Well screen casing top well cementation completion and lift the anchor fluke 9 of prestressed ground anchor device 14;
(3), upper lifting pipe string, lift set tonnage;
(4), continue pressurization, swollen sealing tube external packer 13;
(5), continue pressurization, open well cementation cycling switch 12, circulation well cementation;
(6), after Hou Ning finishes, lower drill bit drills blind plate, drifting on earth, fulfils assignment.
Advantage of the present invention is mainly reflected in:
(1) can use in horizontal well sieve tube well-completing process, overcome current sieve tube completion technique and cannot lift a difficult problem for special cementing.
(2) can use at pipe string middle part, the binding site of sleeve pipe and screen casing, realizes the well-completing process of top cementing of horizontal well sieve tube.
(3), after ground anchorage grappling, whole pipe string internal diameter is consistent, and realizes large latus rectum, does not affect later stage operation.
(4) special structure design makes the expansion external diameter of this ground anchorage large, meets the needs of special formation grappling.
Brief description of the drawings
Fig. 1 is a kind of device embodiment reset condition schematic diagram of the present invention.
Fig. 2 is that device in Fig. 1 is at open mode schematic diagram.
Fig. 3 is the application process schematic diagram of apparatus of the present invention.
In figure: 1, top box cupling, 2, central tube, 3, fluid cylinder overcoat, 4, inlet opening, 5, piston, 7, promote base, 8, pull bar, 9, anchor fluke, 10, fixed cover, 11, lower helmet group, 12, well cementation cycling switch, 13, external packer of pipe, 14, device of the present invention, 15, blind plate, 16, screen casing, 17, guide shoe.
Detailed description of the invention
Below in conjunction with Figure of description 1-2, device of the present invention is described in further details.
This lifts prestressed ground anchor device, comprise top box cupling 1, central tube 2, fluid cylinder overcoat 3, inlet opening 4, piston 5, pin 6, promote base 7, pull bar 8, anchor fluke 9, fixed cover 10, lower helmet 11 etc., by top box cupling 1 and the upper and lower pipe string of bottom screwed connection; Fluid cylinder overcoat 3 and lower helmet 11 end face chamferings, ensure to be lowered to safety; Form pushing mechanism by fluid cylinder overcoat 3, inlet opening 4, piston 5, liquid enters fluid cylinder by inlet opening 4, promotes piston 5 and moves; Jointly form anchoring structure by pull bar 8, anchor fluke 9, fixed cover 10; The anchoring structure that piston 5 actions promote to be jointly made up of pull bar 8, anchor fluke 9, fixed cover 10 is realized grappling function.
When device reset condition, as shown in Figure 1, the pushing mechanism being made up of fluid cylinder overcoat 3, inlet opening 4, piston 5 and the anchoring structure being made up of pull bar 8, anchor fluke 9, fixed cover 10 connect by pin 6.On central tube 2, be processed with limited step, coordinate with piston 5, ensure that piston 5 is fixing after putting in place, prevent from promoting that stroke is excessive causes grappling failure.
In the anchoring structure jointly being formed by pull bar 8, anchor fluke 9, fixed cover 10, on fixed cover 10, process sliding rail, ensure that pull bar 8 can reset condition as shown in Figure 1 move and reach the open mode shown in Fig. 2 smoothly.When this ground anchorage is during in open mode shown in Fig. 2, anchor fluke 9 insert into stratums, realize grappling, and pull bar 8 is strained anchor fluke 9, prevents that anchor fluke anchor fluke 9 from turning over de-, improves anchoring effect.
Ground anchorage central tube 2 internal diameters are exactly the interior latus rectum of whole instrument, identical with whole pipe string internal diameter, realize large latus rectum, hollow object.
What above-described embodiment 1 provided is a kind of exemplary embodiments, also can make following simplified embodiment.
Oil/gas Well screen casing top well cementation completion lifts prestressed ground anchor device and is: be set with successively fluid cylinder overcoat 3, piston 5 in central tube 2 outsides from top to bottom, promote base 7, pull bar 8, anchor fluke 9 and fixed cover 10; Wherein, fluid cylinder overcoat 3 is fixedly connected with central tube 2 with fixed cover 10; Piston 5 be placed in fluid cylinder overcoat 3 and the annular piston chamber that forms at central tube 2 in, and form slipper seal with annular piston chamber and coordinate; On position at central tube 2 near piston 5 tops, offer several radially inlet openings 4; Promote base 7 and dock or integrated connection with piston 5 bottoms, promote pull bar 8 hinges of base 7 and bottom; Middle part hinge on pull bar 8 bottoms and anchor fluke 9; Anchor fluke 9 underneath hinges are on fixed cover 10.
On the basis of embodiment 2, the scheme of said apparatus further comprises:
On central tube 2, be processed with the limited step being fixed with piston 5, central tube 2 upper and lower sides are all processed with nipple.
On the basis of embodiment 3 or 2, the scheme of said apparatus further comprises:
Promote base 7 and fluid cylinder overcoat 3 in the time of original state, be connected by radially-arranged pin 6.
On the basis of embodiment 4, the scheme of said apparatus further comprises:
Between fluid cylinder overcoat 3 and central tube 2, be threaded fixing, fixed cover 10 is connected and fixed with central tube 2 by lower helmet 11, the end face chamfering of fluid cylinder overcoat 3 and lower helmet 11.
Now, in conjunction with Figure of description 3, the implementation step of application process of the present invention in operation process is described:
Specifically comprise:
(1) be lowered to completion pipe string by design and put in place, comprise well cementation cycling switch 12, external packer of pipe 13, the large hollow earth anchor 14 of latus rectum, blind plate 15, screen casing 16, guide shoe 17;
(2) well head is suppressed to setting pressure, opens and lifts prestressed ground anchor device 14;
(3) upper lifting pipe string, lifts and sets tonnage;
(4) continue pressurization, swollen sealing tube external packer 13;
(5) continue pressurization, open well cementation cycling switch 12, circulation, well cementation;
(6) after Hou Ning finishes, lower drill bit drills blind plate, and drifting on earth, fulfils assignment.
Oil/gas Well screen casing of the present invention top well cementation completion lifts prestressed ground anchor device and method and uses at pipe string middle part, lifts after special cementing operation, and in whole completion pipe string, latus rectum is consistent, and does not affect later stage operation.
Claims (6)
1. well cementation completion in Oil/gas Well screen casing top lifts prestressed ground anchor device, it is characterized in that: be set with successively fluid cylinder overcoat [3], piston [5] in central tube [2] outside from top to bottom, promote base [7], pull bar [8], anchor fluke [9] and fixed cover [10]; Wherein, fluid cylinder overcoat [3] is fixedly connected with central tube [2] with fixed cover [10]; Piston [5] is placed in fluid cylinder overcoat [3] and in the annular piston chamber of central tube [2] composition, and forms slipper seal with annular piston chamber and coordinate; On position at central tube [2] near piston [5] top, offer several radially inlet openings [4]; Promote base [7] and dock or integrated connection with piston [5] bottom, promote pull bar [8] hinge of base [7] and bottom; The upper middle part of pull bar [8] bottom and anchor fluke [9] hinge; Anchor fluke [9] underneath hinges is on fixed cover [10].
2. well cementation completion in Oil/gas Well screen casing according to claim 1 top lifts prestressed ground anchor device, it is characterized in that: on central tube [2], be processed with the limited step being fixed with piston [5], central tube [2] upper and lower side is all processed with nipple.
3. well cementation completion in Oil/gas Well screen casing according to claim 2 top lifts prestressed ground anchor device, it is characterized in that: promote base [7] and fluid cylinder overcoat [3] in the time of original state, be connected by radially-arranged pin [6].
4. lift prestressed ground anchor device according to the Oil/gas Well screen casing top well cementation completion described in claim 2 or 3, it is characterized in that: between fluid cylinder overcoat [3] and central tube [2], be threaded fixing, fixed cover [10] is connected and fixed by lower helmet [11] and central tube [2], the end face chamfering of fluid cylinder overcoat [3] and lower helmet [11].
5. well cementation completion in Oil/gas Well screen casing according to claim 4 top lifts prestressed ground anchor device, it is characterized in that: fixed cover is processed with sliding rail on [10] vertically, and pull bar [8] bottom and anchor fluke [9] are arranged in sliding rail.
6. the application process that lifts prestressed ground anchor device according to the Oil/gas Well screen casing top well cementation completion described in aforementioned arbitrary claim, is characterized in that: comprise the following steps:
(1) comprise that to being lowered in Oil/gas Well well cementation cycling switch [12], external packer of pipe [13], Oil/gas Well screen casing top well cementation completion lift the completion pipe string of prestressed ground anchor device [14], blind plate [15], screen casing [16], guide shoe [17] composition;
(2) well head is suppressed, and opens Oil/gas Well screen casing top well cementation completion and lift the anchor fluke [9] of prestressed ground anchor device [14];
(3) upper lifting pipe string, lifts and sets tonnage;
(4) continue pressurization, swollen sealing tube external packer [13];
(5) continue pressurization, open well cementation cycling switch [12], circulation well cementation;
(6) after Hou Ning finishes, lower drill bit drills blind plate, and drifting on earth, fulfils assignment.
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| CN201210578869.5A CN103899264B (en) | 2012-12-28 | 2012-12-28 | The application process of Oil/gas Well screen casing top well cementation completion lifting prestressed ground anchor device |
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| CN201210578869.5A CN103899264B (en) | 2012-12-28 | 2012-12-28 | The application process of Oil/gas Well screen casing top well cementation completion lifting prestressed ground anchor device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178856A (en) * | 2015-07-14 | 2015-12-23 | 中国石油天然气集团公司 | Oil and gas well direction finder |
| CN106687242A (en) * | 2014-09-09 | 2017-05-17 | 弗洛迪姆有限公司 | Electrochemical well pipe cutting instrument |
| CN108894742A (en) * | 2018-07-02 | 2018-11-27 | 中煤科工集团西安研究院有限公司 | A kind of coalbed methane reservoir measurement method of parameters and packer setting tool |
| CN109989725A (en) * | 2017-12-29 | 2019-07-09 | 中石化石油工程技术服务有限公司 | Exempt from brill formula blind plate and exempts to bore plug well shaft fixing technology |
| CN110552658A (en) * | 2019-09-26 | 2019-12-10 | 西南石油大学 | Large-drift-diameter prestressed well cementation tool |
| CN113513262A (en) * | 2021-07-28 | 2021-10-19 | 山西蓝焰煤层气工程研究有限责任公司 | Horizontal well drilling horizontal section stratum collapse treatment tool and method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289876A (en) * | 1992-07-28 | 1994-03-01 | Natural Reserves Group, Inc. | Completing wells in incompetent formations |
| RU2171359C1 (en) * | 2000-03-17 | 2001-07-27 | Открытое Акционерное Общество Акционерная нефтяная компания "Башнефть" | Method of horizontal well completion |
| CN2744826Y (en) * | 2004-10-21 | 2005-12-07 | 辽河石油勘探局 | Thermal recovery horizontal well casing prestress completion device |
| CN201045290Y (en) * | 2007-03-09 | 2008-04-09 | 李文才 | Large hollow stem oil pumping system |
| CN202117661U (en) * | 2011-06-03 | 2012-01-18 | 中国石油天然气股份有限公司 | Self-locking type stratum testing artificial pipe string |
| CN202273619U (en) * | 2011-10-29 | 2012-06-13 | 中国石油集团西部钻探工程有限公司 | Drilling-type prestress well cementation ground anchor |
| CN202338313U (en) * | 2011-11-30 | 2012-07-18 | 山东成林高新技术产业有限公司 | Full hole equal-diameter prestressed well completion tool |
| CN203081367U (en) * | 2012-12-28 | 2013-07-24 | 中国石油化工股份有限公司 | Large drift diameter hollow ground anchor for oil and gas well cementation and completion practice |
-
2012
- 2012-12-28 CN CN201210578869.5A patent/CN103899264B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289876A (en) * | 1992-07-28 | 1994-03-01 | Natural Reserves Group, Inc. | Completing wells in incompetent formations |
| RU2171359C1 (en) * | 2000-03-17 | 2001-07-27 | Открытое Акционерное Общество Акционерная нефтяная компания "Башнефть" | Method of horizontal well completion |
| CN2744826Y (en) * | 2004-10-21 | 2005-12-07 | 辽河石油勘探局 | Thermal recovery horizontal well casing prestress completion device |
| CN201045290Y (en) * | 2007-03-09 | 2008-04-09 | 李文才 | Large hollow stem oil pumping system |
| CN202117661U (en) * | 2011-06-03 | 2012-01-18 | 中国石油天然气股份有限公司 | Self-locking type stratum testing artificial pipe string |
| CN202273619U (en) * | 2011-10-29 | 2012-06-13 | 中国石油集团西部钻探工程有限公司 | Drilling-type prestress well cementation ground anchor |
| CN202338313U (en) * | 2011-11-30 | 2012-07-18 | 山东成林高新技术产业有限公司 | Full hole equal-diameter prestressed well completion tool |
| CN203081367U (en) * | 2012-12-28 | 2013-07-24 | 中国石油化工股份有限公司 | Large drift diameter hollow ground anchor for oil and gas well cementation and completion practice |
Non-Patent Citations (4)
| Title |
|---|
| 施连海等: "套管双级地锚在稠油热采井中的应用", 《石油机械》, vol. 38, no. 10, 31 October 2010 (2010-10-31) * |
| 李葆青等: "基础固井地锚提拉套管预应力技术", 《石油钻采工艺》, 30 April 1990 (1990-04-30) * |
| 牟忠信等: "组合式套管预应力地锚工具的研制与应用", 《石油机械》, vol. 33, no. 2, 28 February 2005 (2005-02-28) * |
| 肖武锋等: "预应力固井用弹簧式水力促动底部循环地锚", 《石油机械》, vol. 35, no. 3, 30 March 2007 (2007-03-30) * |
Cited By (11)
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|---|---|---|---|---|
| CN106687242A (en) * | 2014-09-09 | 2017-05-17 | 弗洛迪姆有限公司 | Electrochemical well pipe cutting instrument |
| CN106687242B (en) * | 2014-09-09 | 2020-01-31 | 弗洛迪姆有限公司 | Electrochemical well pipe cutting tool |
| CN105178856A (en) * | 2015-07-14 | 2015-12-23 | 中国石油天然气集团公司 | Oil and gas well direction finder |
| CN105178856B (en) * | 2015-07-14 | 2017-06-13 | 中国石油天然气集团公司 | Oil/gas Well finder |
| CN109989725A (en) * | 2017-12-29 | 2019-07-09 | 中石化石油工程技术服务有限公司 | Exempt from brill formula blind plate and exempts to bore plug well shaft fixing technology |
| CN108894742A (en) * | 2018-07-02 | 2018-11-27 | 中煤科工集团西安研究院有限公司 | A kind of coalbed methane reservoir measurement method of parameters and packer setting tool |
| CN110552658A (en) * | 2019-09-26 | 2019-12-10 | 西南石油大学 | Large-drift-diameter prestressed well cementation tool |
| CN113513262A (en) * | 2021-07-28 | 2021-10-19 | 山西蓝焰煤层气工程研究有限责任公司 | Horizontal well drilling horizontal section stratum collapse treatment tool and method |
| CN113513262B (en) * | 2021-07-28 | 2024-01-26 | 山西蓝焰煤层气工程研究有限责任公司 | Horizontal well drilling horizontal section stratum collapse treatment tool and method |
| CN115893175A (en) * | 2023-01-09 | 2023-04-04 | 中铁城建集团第一工程有限公司 | Hyperboloid overhanging steel net rack synchronous integral lifting system and construction method |
| CN115893175B (en) * | 2023-01-09 | 2023-06-16 | 中铁城建集团第一工程有限公司 | Synchronous integral lifting system for hyperboloid overhanging steel net frame and construction method |
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