CN103089180A - Casing sidetracked well completion method using expansion screen tube - Google Patents
Casing sidetracked well completion method using expansion screen tube Download PDFInfo
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- CN103089180A CN103089180A CN2011103357290A CN201110335729A CN103089180A CN 103089180 A CN103089180 A CN 103089180A CN 2011103357290 A CN2011103357290 A CN 2011103357290A CN 201110335729 A CN201110335729 A CN 201110335729A CN 103089180 A CN103089180 A CN 103089180A
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Abstract
The invention relates to a casing sidetracked well completion method using an expansion screen tube. The casing sidetracked well completion method includes laying down a tail tubular pile with an expansion screen tube into a preset position in a well, and pressing and hanging an expansion hanger to enable a rubber ring on the expansion hanger to attach into an original well casing for suspending and sealing a completion tubular pile; subjecting the expansion screen tube to adaptive expansion through a reducing expansion tool, enabling the expansion screen tube to cling to the well wall after expansion, and eliminating an annular space of the screen tube and the well wall. The casing sidetracked well completion method has the advantages that the hanger can have larger inner diameter after being expanded, late oil exploration and operation are facilitated, runout of the tail tube head is prevented, the expansion screen tube clings to the well wall after being expanded, drift diameter is large, oil flow area and sand filter area are enlarged, sand prevention effect of the screen tube is improved, and exploration effect that capacity and exploration and recovery rate are increased are achieved.
Description
Technical field
The present invention relates to the casing side tracking well expandable screen completion method in oil drilling completion technique field.
Technical background
At present, China's loose sand oil accumulation distribution is wide, reserves are large, and output occupies an important position, and sand production is seriously restricting the raising of China's oil output and the control of cost for oil production.Along with the arrival of mid-late oilfield development, the special well increasing year by year, and the completion of horizontal well, multilateral well, sidetracked hole and sand control are comparatively difficult.Sidetracked hole shakes out and has following characteristics, and preforation tunnel is little, and critical flow velocity is large, easily shakes out; Well is little, and the sand setting pocket is limited, after formation sand production very easily sand bury oil reservoir.For the relatively serious sidetracked hole that shakes out, because casing inner diameter is limited, the mechanical sand control mode that oil reservoir is hung sand screen is restricted, and success rate is lower.
Expandable screen is based on the theory of expansion slot pipe, and overall structure is expanded under the variable radial expansion tool operation is close to the borehole wall, has eliminated the annular space of screen casing and the borehole wall, realizes " zero clearance ".The expandable screen technology is applied in sidetracked hole, greatly improves sidetracked hole completion tubular column internal diameter, the technical barrier such as solve that sidetracked hole shakes out and the sand control screen internal diameter is little is for sidetracked hole completion and sand control provide a new approach and strong technical support.
Summary of the invention
The objective of the invention is the problem for the prior art existence, a kind of casing side tracking well expandable screen completion method is provided, the technical barriers such as conventional sand control screen internal diameter is little to overcome, easy sand plug, and solve the sealing problem of screen casing and upper strata sleeve pipe overlay segment, realize the casing side tracking well sand control of target zone no water layer condition.
Casing side tracking well expandable screen completion method, implementation process is as follows: at first assemble the tail pipe tubing string, be about to the connection of expansion hanger and expandable screen and be combined as the tail pipe tubing string, and be preinstalled with expansion cone in the bottom of expansion hanger, expansion cone is connected with the central tube on top; The tail pipe tubing string is lowered in side-tracked hole to the precalculated position; Pull expansion cone up by central tube, the rubber ring after expansion hanger expands is combined with former casing inwall, realizes that the expansion hanger seat is hung and the suspension of tail pipe tubing string; After tripping out expansion cone, expansion hanger by central tube after expand be lowered to variable radial expansion tool to the expandable screen top, make variable radial expansion tool realize reducing, adopt simultaneously mechanical pressuring method that expandable screen is expanded from top to down, make expandable screen be close to side-tracked hole; Trip out variable radial expansion tool, carry out next step production operation.
Described expandable screen comprises expansion parent tube, filter screen and outside protective covers three layer construction, evenly is processed with slot on the expansion parent tube; Filter screen adopts multi-disc and overlaps each other, is clipped in the middle of expansion parent tube and outside protective covers, and its pore size filter remains unchanged in the expandable screen expansion process.Add large diameter through sleeve between expansion hanger and expandable screen.Be processed with free-extension and equally distributed in the shape of a spiral roller structure under pressure on variable radial expansion tool.
The present invention adopts expandable screen, coordinates expansion hanger to carry out completion, and its advantage is:
1, expandable screen can effectively increase the completion tubular column internal diameter, reduces the space between screen casing and the borehole wall, thereby greatly reduces sand impinging and erosion problem, improves to greatest extent the filter sand area, and can implement further operation to reservoir and process and control.
2, use expandable screen can greatly increase the completion internal diameter, improve the hole diameter utilization rate, generally, adopt expandable screen to implement the pit shaft of operation, after operation, the hole diameter loss reduction is only the screen casing wall thickness, and this is that other similar work measure can not reach.
3, use expandable screen can improve well in operation production capacity, use expandable screen in some wells, can reduce skin effect, the oil gas capacity of well is improved.
Although 4, gravel pack technology has good sand controlling result, can affect the output of oil well, usually problem can occur, and the installation exercise somewhat expensive; Adopt expandable screen, operating cost obviously lacks than traditional gravel filling operation expense, therefore, but the cost of production of decrease oil well.
Expandable screen can be fit to various cased hole completion wells, and the sand control of the bore hole well of borehole wall rule.The expandable screen technology has purposes and high economic benefit and social benefit widely aspect the completion of special well and sand control, and this technology provides a new approach for solving the problem of completion and sand control aspect.
Description of drawings
Fig. 1 is that the tail pipe tubing string of an embodiment of the present invention is lowered to the side-tracked hole schematic diagram.
Fig. 2 is that the present invention completes the schematic diagram after extension is sat in the expansion hanger expansion.
Fig. 3 is that the present invention carries out the schematic diagram that the expandable screen tubing string expands.
Fig. 4 is that the present invention completes the tubing string schematic diagram after casing side tracking well expandable screen completion expands.
Fig. 5 is cross section comparison diagram before and after expandable screen expands, and left figure is the expansion section front view, and right figure is sectional view after expanding.
1. expansion hanger 2. large diameter through sleeve 4. former casing 6. expansion cone 7. rubber ring 8. central tube 9. variable radial expansion tool 10. expansion parent tube 11. filter screen 12. outside protective covers of side-tracked hole 5. of expandable screen 3..
The specific embodiment
Now in conjunction with Figure of description, the inventive method is further described.
As Fig. 1 ~ shown in Figure 5, the completion tail pipe of sidetracked hole is mainly expandable screen 2, adopts expansion hanger 1 to hang sealing, between expansion hanger 1 and expandable screen 2, can suitably add as requested large diameter through sleeve 3.Expansion hanger 1 is positioned at the tubing string top, and on its external surface, processing provides the rubber ring 7 that hangs sealing, and the bottom is processed with the starting drive of a bell mouth shape, is used for prefabricated expansion cone 6; Expandable screen 2 mainly comprises expansion parent tube 10, filter screen 11 and outside protective covers 12 three layer constructions, evenly is processed with slot on expansion parent tube 10, and filter screen 11 overlaps each other, is clipped in the middle of expansion parent tube 10 and outside protective covers 12.
The inventive method is to implement like this.As Fig. 1 ~ shown in Figure 2, after the side-tracked hole of sidetracked hole is completed, adopt expansion cone 6 suspensions and central tube 8 in expansion hanger 1 to accompany, the tail pipe tubing string of expansion hanger 1, large diameter through sleeve 3 and expandable screen 2 combinations is lowered in side-tracked hole 4 to the precalculated position, expansion cone 6 is positioned at the starting drive of expansion hanger 1 bottom, be sealed and matched with expansion hanger 1 body formation, the expansion that is used for hanging tail pipe and realizes expansion hanger 1.Until tail pipe behind the precalculated position, the turn on pump circulation, first adopt hydraulic pressure or mechanical system to realize the expansion seat extension of expansion hanger 1, after pressure-activated, promote expansion cone 6 up along central tube 8, make expansion hanger 1 that radial plastic deformation occur, and rubber ring 7 tightly is compressed between expansion hanger 1 and former casing 5 inwalls, play the double action that hangs tail pipe and sealing, complete the expansion of expansion hanger 1 and sit extension.
As Fig. 3 ~ shown in Figure 5, after expansion hanger 1 expands and sits extension, trip out 7 combinations of central tube 8 and expansion cone, then be lowered to variable radial expansion tool 9, variable radial expansion tool 9 can be that be processed with can under pressure can free-extension and equally distributed in the shape of a spiral roller structure.Treat that variable radial expansion tool 9 is down to expandable screen 2 tops, make variable radial expansion tool 9 realize reducing by hydraulic pressure, its roller is stretched out, thereby increase the external diameter of variable radial expansion tool 9, adopt simultaneously mechanical pressuring method that expandable screen 2 is expanded from top to down, after expanding, expandable screen 2 is close to side-tracked hole 4, trips out variable radial expansion tool 9, carries out next step production operation.
After the construction of expanding is completed, greatly increase the internal diameter of expansion hanger 1, be convenient to the enforcement of later stage oil recovery and well stimulation; Expandable screen 2 is close to side-tracked hole 4, has eliminated the annular space of expandable screen 2 with side-tracked hole 4, can increase the filter sand area, improves expandable screen 2 sand controlling results, extends the 2 sand control life-spans of screen casing, thereby reduces drillng operation expense and oil well production cost.
Adopt the part instrument to obtain from the patent document that the applicant formerly obtains in the present invention.Expansion hanger 1 can be the patent (a kind of hydraulic expansion hanger for expandable screen) of ZL200920157954.8 referring to the patent No., expandable screen 2 can be the patent (a kind of expandable sand control screen pipe) of ZL200820018905.1 referring to the patent No., expansion cone 6 can be the patent (a kind of petroleum works bloat tool of expandable tubular) of ZL200420053900.4 referring to the patent No., and variable radial expansion tool 9 can be the patent (variable radial expansion tool that is used for expandable screen) of ZL200820018906.6 referring to the patent No..
Claims (4)
1. casing side tracking well expandable screen completion method, it is characterized in that implementation process is as follows: at first assemble the tail pipe tubing string, be about to the connection of expansion hanger [1] and expandable screen [2] and be combined as the tail pipe tubing string, and be set with rubber ring [7] outside the top of expansion hanger [1], the bottom is preinstalled with expansion cone [6], and expansion cone [6] is connected with the central tube [8] on top; The tail pipe tubing string is lowered in side-tracked hole [4] to the precalculated position; Pull expansion cone [6] up by central tube [8], the rubber ring [7] after expansion hanger [1] expands is combined with former casing [5] inwall, realizes that expansion hanger [1] seat is hung and the suspension of tail pipe tubing string; After tripping out expansion cone [6], expansion hanger [1] by central tube [8] after expand be lowered to variable radial expansion tool [9] to expandable screen [2] top, make variable radial expansion tool [9] realize reducing, adopt simultaneously mechanical pressuring method that expandable screen [2] is expanded from top to down, make expandable screen [2] be close to side-tracked hole [4]; Trip out variable radial expansion tool [9], carry out next step production operation.
2. casing side tracking well expandable screen completion method as claimed in claim 1, it is characterized in that: described expandable screen [2] comprises expansion parent tube [10], filter screen [11] and outside protective covers [12] three layer construction, and the expansion parent tube evenly is processed with slot on [11]; Filter screen [11] overlaps each other, is clipped in the middle of expansion parent tube [10] and outside protective covers [12], and its pore size filter remains unchanged in expandable screen [2] expansion process.
3. casing side tracking well expandable screen completion method as claimed in claim 1, is characterized in that adding large diameter through sleeve [3] between expansion hanger [1] and expandable screen [2].
4. casing side tracking well expandable screen completion method as described in claim 1 ~ 3 any one, is characterized in that being processed with on variable radial expansion tool [9] free-extension and equally distributed in the shape of a spiral roller structure under pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103357290A CN103089180A (en) | 2011-10-31 | 2011-10-31 | Casing sidetracked well completion method using expansion screen tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103357290A CN103089180A (en) | 2011-10-31 | 2011-10-31 | Casing sidetracked well completion method using expansion screen tube |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265161A (en) * | 2014-07-25 | 2015-01-07 | 中国石油化工股份有限公司 | 5.5-inch casing pipe inner free section window sidetrack drilling process |
| CN104343425A (en) * | 2013-08-09 | 2015-02-11 | 胜利油田胜机石油装备有限公司 | Sand control completion method for drawing and expanding sand screen underground and tool thereof |
| CN107676046A (en) * | 2016-08-02 | 2018-02-09 | 中国石油天然气股份有限公司 | A kind of sidetracked hole well completion technique tubular pile |
| CN109779575A (en) * | 2019-03-14 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of deep camber wellbore sand control completion tubing string and completion method |
| CN114575796A (en) * | 2022-04-07 | 2022-06-03 | 核工业北京化工冶金研究院 | Expansion sieve tube combination device for in-situ leaching uranium mining and well completion method thereof |
| CN114922606A (en) * | 2022-05-16 | 2022-08-19 | 核工业北京化工冶金研究院 | Re-establishment method for secondary development seepage field by windowing in-situ leaching side drilling |
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| WO2005066450A1 (en) * | 2003-12-29 | 2005-07-21 | Noble Drilling Services Inc. | Multiple expansion sand screen system and method |
| CN201170072Y (en) * | 2008-03-13 | 2008-12-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Variable radial expansion tools for expansion sieve tube |
| CN101532378A (en) * | 2008-03-13 | 2009-09-16 | 中国石化集团胜利石油管理局钻井工艺研究院 | Expandable sand control screen pipe |
| CN101906945A (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 hanger for expandable screen pipes |
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2011
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| WO2005066450A1 (en) * | 2003-12-29 | 2005-07-21 | Noble Drilling Services Inc. | Multiple expansion sand screen system and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343425A (en) * | 2013-08-09 | 2015-02-11 | 胜利油田胜机石油装备有限公司 | Sand control completion method for drawing and expanding sand screen underground and tool thereof |
| CN104265161A (en) * | 2014-07-25 | 2015-01-07 | 中国石油化工股份有限公司 | 5.5-inch casing pipe inner free section window sidetrack drilling process |
| CN107676046A (en) * | 2016-08-02 | 2018-02-09 | 中国石油天然气股份有限公司 | A kind of sidetracked hole well completion technique tubular pile |
| CN107676046B (en) * | 2016-08-02 | 2019-03-15 | 中国石油天然气股份有限公司 | A kind of sidetracked hole well completion technique tubular pile |
| CN109779575A (en) * | 2019-03-14 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of deep camber wellbore sand control completion tubing string and completion method |
| CN114575796A (en) * | 2022-04-07 | 2022-06-03 | 核工业北京化工冶金研究院 | Expansion sieve tube combination device for in-situ leaching uranium mining and well completion method thereof |
| CN114922606A (en) * | 2022-05-16 | 2022-08-19 | 核工业北京化工冶金研究院 | Re-establishment method for secondary development seepage field by windowing in-situ leaching side drilling |
| CN114922606B (en) * | 2022-05-16 | 2023-11-21 | 核工业北京化工冶金研究院 | Secondary development seepage field reconstruction method for in-situ leaching side drilling windowing |
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Application publication date: 20130508 |