CN106567700A - Oil field reservoir modification method - Google Patents
Oil field reservoir modification method Download PDFInfo
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- CN106567700A CN106567700A CN201510645063.7A CN201510645063A CN106567700A CN 106567700 A CN106567700 A CN 106567700A CN 201510645063 A CN201510645063 A CN 201510645063A CN 106567700 A CN106567700 A CN 106567700A
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- fracturing
- sliding bush
- fracturing sliding
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Abstract
The invention provides an oil field reservoir modification method. The modification method comprises the steps that a float shoe, a float collar, a fracturing valve and multistage fracturing sliding sleeve combinations are sequentially connected onto a sleeve from bottom to top to obtain a fracturing pipe column device; each stage of fracturing sliding sleeve combination comprises a well cementing fracturing sliding sleeve and a plurality of multi-cluster well cementing fracturing sliding sleeves; the fracturing pipe column device is put between an oil field reservoir and a well mouth, and well cementing is performed; and each fracturing sliding sleeve combination is opened for fracturing the oil field reservoir. The oil field reservoir modification method is applicable to fracturing production requiring oil deposits with high nonhomogeneity in the longitudinal direction, discontinuous oil layer distribution and a plurality of developed small layers; the economic and effective modification on multiple thin layers with short distance and similar physical property in the longitudinal direction can be realized; the modification efficiency of a well cementing fracturing sliding sleeve technology is improved; and the operation cost is reduced.
Description
Technical field
The present invention relates to petroleum reservoir transformation field, in particular to a kind of remodeling method of oilfield reservoir.
Background technology
With the rise of volume fracturing concept in recent years, casing cementing fracturing sliding bush fracturing technique is increasingly becoming a main flow pressure break skill
Art, main technology realize there are three kinds of forms：(1) the well cementation fracturing sliding bush infinite stages with Schlumberger's TAP valves as representative
Fracturing technique, it is at different levels between by hydraulic pipe transmit pressure, from bottom to top step by step throw calker mode realize infinite stages
Reservoir reconstruction；(2) with NCS as representative coiled tubing band opener, by mechanical type position, realize from bottom to top by
Level fracturing technique；(3) open the pressure break step by step that fracturing valve realizes the limited number of plies by the way of pitching step by step from bottom to top.More than
Technology has application at home, is relatively applied to straight well, horizontal well classification pressure break, but similar for the upper physical property in longitudinal direction, closer to the distance
The separate zone stimulation of many thin layer straight wells then need successively to transform, it is impossible to realize cost-effective transformation operation.
However, oil field at home ligh-oil reservoir in the vertical more has stronger anisotropism, oil-layer distribution is discontinuous, develops multiple
Substratum needs pressure break to build product, and the purpose for employing each reservoir is reached according to conventional casing cementing fracturing sliding bush technology, needs a large amount of
Repeat operation, not only working performance is low, also results in the waste of fracturing material.
The content of the invention
Present invention is primarily targeted at a kind of remodeling method of oilfield reservoir is provided, distance similar to the upper physical property in longitudinal direction to realize
Nearer multiple thin layers carry out unifying transformation.
To achieve these goals, the invention provides a kind of remodeling method of oilfield reservoir, the remodeling method includes：By float shoe,
Float collar, fracturing valve and multistage fracturing sliding bush combination are sequentially connected to fracturing string device, every grade of pressure break are obtained on sleeve pipe from lower to upper
Sliding bush combination includes a well cementation fracturing sliding bush and multiple many cluster well cementation fracturing sliding bushs；Fracturing string device is positioned over into oilfield reservoir
And well head between and cement the well；Each fracturing sliding bush combination is opened, pressure break is carried out to oilfield reservoir.
Further, reducing ball socket structure is provided with the well cementation fracturing sliding bush in fracturing sliding bush combinations at different levels；Every grade of fracturing sliding bush
The piston of each many cluster well cementation fracturing sliding bushs in combination is connected by pressure transmission structure；Multistage fracturing sliding bush combination includes and pressure break
The adjacent first paragraph fracturing sliding bush combination of valve, and the epimere fracturing sliding bush combination of the above is combined positioned at first paragraph fracturing sliding bush, and
First paragraph fracturing sliding bush combination using pit shaft build the pressure or perforation by the way of opened, epimere fracturing sliding bush combination using well head delivery
The mode of opener is opened.
Further, the opening ways of epimere fracturing sliding bush combination are：After opener reaches the position of reducing ball socket structure, well
Mouthful build the pressure, reducing ball socket structure comes downwards to lower limit in descending difference effect, expose the pressure transmission hole of pressure transmission structure, pressure transmission hole with
Piston is communicated；Each many cluster well cementation pressure breaks when pressure reaches the Opening pressure of well cementation fracturing sliding bush, in fracturing sliding bush combination at the same level
Sliding sleeve is opened simultaneously.
Further, have between opener and reducing ball socket structure and between the outer tube of reducing ball socket structure and well cementation fracturing sliding bush
There is anti-rotation structure.
Further, reducing ball socket structure bores and is all higher than or waits except the diameter of the well cementation fracturing sliding bush in rear fracturing sliding bush combinations at different levels
In the internal diameter of sleeve pipe.
Further, reducing ball socket structure and opener are made using soluble material.
Further, cement the well fracturing sliding bush inside have switch, reducing ball socket structure bore remove after, under enter switching tools will cement the well
Fracturing sliding bush is closed.
Using technical scheme, the present invention is applied to the upper anisotropism in longitudinal direction by force, and oil-layer distribution is discontinuous, develops multiple
Substratum needs pressure break to build the oil reservoir of product, and above physical property is similar to be capable of achieving longitudinal direction, and many thin layers closer to the distance carry out cost-effective transformation,
Well cementation fracturing sliding bush fracturing technique transformation efficiency is improved, operating cost is reduced.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the schematic flow sheet of the remodeling method of the oilfield reservoir for being provided according to the embodiment of the present invention；And
During Fig. 2 shows the remodeling method of the oilfield reservoir for being provided according to the embodiment of the present invention, fracturing string device is cutd open
Face structural representation.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Oil field at home ligh-oil reservoir in the vertical more has stronger anisotropism, and oil-layer distribution is discontinuous, and developing multiple substratums needs
Pressure break builds product, and the purpose for employing each reservoir is reached according to conventional casing cementing fracturing sliding bush technology, needs a large amount of repetitions to make
Industry, not only working performance is low, also results in the waste of fracturing material.
In order to solve the above problems, the invention provides a kind of remodeling method of oilfield reservoir.As shown in figure 1, the remodeling method
Including：Float shoe 6, float collar 5, fracturing valve 4 and multistage fracturing sliding bush combination are sequentially connected to pressure break is obtained on sleeve pipe from lower to upper
Tubular column unit (as shown in Figure 2), every grade of fracturing sliding bush combination include that a well cementation fracturing sliding bush 2 and multiple many cluster well cementation pressure breaks are slided
Set 1；Fracturing string device is positioned between oilfield reservoir and well head and is cemented the well；Each fracturing sliding bush combination is opened, to oilfield reservoir
Carry out pressure break.
The present invention is applied to the upper anisotropism in longitudinal direction by force, and oil-layer distribution is discontinuous, and developing multiple substratums needs pressure break to build the oil reservoir of product,
It is capable of achieving the upper physical property in longitudinal direction similar, many thin layers closer to the distance carry out cost-effective transformation, raising well cementation fracturing sliding bush pressure break skill
Art transforms efficiency, reduces operating cost.
Reducing ball socket structure is provided with well cementation fracturing sliding bush 2 in fracturing sliding bush combinations at different levels；In every grade of fracturing sliding bush combination
The piston of each many cluster well cementation fracturing sliding bushs 1 is connected by pressure transmission structure；Multistage fracturing sliding bush combination includes and 4 phase of fracturing valve
Adjacent first paragraph fracturing sliding bush combination, and the epimere fracturing sliding bush combination of the above, and first are combined positioned at first paragraph fracturing sliding bush
Section fracturing sliding bush combination using pit shaft build the pressure or perforation by the way of opened, epimere fracturing sliding bush combination using well head deliver open
The mode of instrument 3 is opened.
Wherein, the opening ways of epimere fracturing sliding bush combination are：After opener 3 reaches the position of reducing ball socket structure, well head
Build the pressure, reducing ball socket structure comes downwards to lower limit in descending difference effect, exposes the pressure transmission hole of pressure transmission structure, pressure transmission hole and work
Plug is communicated；Each many cluster well cementation pressure breaks when pressure reaches the Opening pressure of well cementation fracturing sliding bush 2, in fracturing sliding bush combination at the same level
Sliding sleeve 1 is opened simultaneously.
Preferably, between opener 3 and reducing ball socket structure and between the outer tube of reducing ball socket structure and well cementation fracturing sliding bush 2
With anti-rotation structure.Reducing ball socket structure bore except the diameter of the well cementation fracturing sliding bush 2 in rear fracturing sliding bushs at different levels combination is all higher than or
Equal to the internal diameter of sleeve pipe.Reducing ball socket structure and opener 3 are made using soluble material.The inside tool of well cementation fracturing sliding bush 2
Have a switch, reducing ball socket structure is bored after removing, under enter switching tools fracturing sliding bush 2 of cementing the well and close.
The remodeling method of the oilfield reservoir of present invention offer is provided.
Float shoe 6, float collar 5, fracturing valve 4 and multistage fracturing sliding bush combination are sequentially connected to pressure break pipe is obtained on sleeve pipe from lower to upper
Column device, and with sleeve pipe lower going-into-well, school adjustment pipe string length deeply make each well cementation fracturing sliding bush 2 in requisition for changing
The interval made.The interval of many cluster transformations is needed, enters many cluster well cementation fracturing sliding bushs 1, many cluster well cementation under the interval of each needs transformation
It is connected using one or more structures that can transmit pressure between fracturing sliding bush 1.Per section of 2 ball seat of well cementation fracturing sliding bush is from bottom to top
Increase successively, many clusters cement the well fracturing sliding bush 1 in the sliding sleeve of lowermost.Well cementation, Hou Ning.
When transformation is needed, first paragraph is by the way of pit shaft builds the pressure or the mode of perforation opens the pressure break passage of first paragraph.Second
Section and above interval are opened and are opened by the way of pitching.Many cluster well cementation fracturing sliding bushs 1 operationally, open work from well head input
Tool 3, small displacement pumping, opener 3 reach ball seat position, and well head builds the pressure, and ball seat comes downwards to lower limit in differential pressure action, dew
Go out pressure transmission hole, pressure transmission hole is communicated with piston.Each many cluster sliding sleeve pistons at the same level are connected by pressure transmission structure, are transmitted with sleeve pipe no pressure
Structure.Continue to rise high pressure in sleeve pipe, when well cementation 2 Opening pressure of fracturing sliding bush is reached, many cluster well cementation fracturing sliding bushs 1 at the same level
Simultaneously open, you can according to this mastery routine pressure break successively from bottom to top.
Need turn take out before, under enter to bore grinding system from bottom to top successively by ball seat bore remove, recover run through casing size.Each well cementation fracturing sliding bush 2
With switchable function, when the later stage if desired closes, under enter switching tools close fracturing sliding bush.
Each well cementation fracturing sliding bush 2 has switchable function, when the later stage if desired closes, under enter switching tools by hydraulic pressure or handling
The mode of tubing string is realized closing fracturing sliding bush.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：The present invention is applied to
On longitudinal direction, anisotropism is strong, and oil-layer distribution is discontinuous, and developing multiple substratums needs pressure break to build the oil reservoir of product, is capable of achieving the upper physical property in longitudinal direction
Similar, many thin layers closer to the distance carry out cost-effective transformation, improve well cementation fracturing sliding bush fracturing technique transformation efficiency, reduce
Operating cost.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for those skilled in the art
For, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of remodeling method of oilfield reservoir, it is characterised in that the remodeling method includes：
Float shoe (6), float collar (5), fracturing valve (4) and multistage fracturing sliding bush combination are sequentially connected to into sleeve pipe from lower to upper
On obtain fracturing string device, per grade of fracturing sliding bush combination includes that well cementation fracturing sliding bush (2) and multiple many clusters are consolidated
Well fracturing sliding bush (1)；
The fracturing string device is positioned between oilfield reservoir and well head and is cemented the well；
Each fracturing sliding bush combination is opened, pressure break is carried out to the oilfield reservoir.
2. remodeling method according to claim 1, it is characterised in that the well cementation pressure in the fracturing sliding bushs combinations at different levels
Split in sliding sleeve (2) and be provided with reducing ball socket structure；Each described many cluster well cementation pressure breaks in per grade of fracturing sliding bush combination are slided
The piston of set (1) is connected by pressure transmission structure；The multistage fracturing sliding bush combination includes and the fracturing valve (4)
Adjacent first paragraph fracturing sliding bush combination, and the epimere fracturing sliding bush group that the above is combined positioned at the first paragraph fracturing sliding bush
Close, and first paragraph fracturing sliding bush combination using pit shaft build the pressure or perforation by the way of opened, the epimere pressure break is slided
Set combination is opened by the way of well head delivers opener (3).
3. remodeling method according to claim 2, it is characterised in that the opening ways of the epimere fracturing sliding bush combination are：
After the opener (3) reaches the position of the reducing ball socket structure, well head builds the pressure, and the reducing ball socket structure is under
Row difference effect comes downwards to lower limit, exposes the pressure transmission hole of the pressure transmission structure, and the pressure transmission hole is communicated with the piston；
When pressure reaches the Opening pressure of well cementation fracturing sliding bush (2), each described many clusters in the fracturing sliding bush combination at the same level are solid
Well fracturing sliding bush (1) is while open.
4. remodeling method according to claim 3, it is characterised in that the opener (3) and the reducing ball socket structure
Between and the reducing ball socket structure with it is described well cementation fracturing sliding bush (2) outer tube between have anti-rotation structure.
5. remodeling method according to claim 3, it is characterised in that the reducing ball socket structure is bored except the rear pressure breaks at different levels
The diameter of the well cementation fracturing sliding bush (2) in sliding bush combination is all higher than or equal to the internal diameter of described sleeve pipe.
6. remodeling method according to claim 3, it is characterised in that the reducing ball socket structure and the opener (3)
Made using soluble material.
7. remodeling method according to claim 3, it is characterised in that the inside of the well cementation fracturing sliding bush (2) has switch,
The reducing ball socket structure is bored after removing, under enter the switching tools well cementation fracturing sliding bush (2) closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510645063.7A CN106567700A (en) | 2015-10-08 | 2015-10-08 | Oil field reservoir modification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510645063.7A CN106567700A (en) | 2015-10-08 | 2015-10-08 | Oil field reservoir modification method |
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| Publication Number | Publication Date |
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| CN106567700A true CN106567700A (en) | 2017-04-19 |
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| CN201510645063.7A Pending CN106567700A (en) | 2015-10-08 | 2015-10-08 | Oil field reservoir modification method |
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| CN102337862A (en) * | 2011-10-17 | 2012-02-01 | 中国石油天然气股份有限公司 | Variable-diameter fracturing valve |
| US20120312547A1 (en) * | 2011-06-08 | 2012-12-13 | Halliburton Energy Services, Inc. | Responsively activated wellbore stimulation assemblies and methods of using the same |
| CN102979495A (en) * | 2012-12-28 | 2013-03-20 | 中国石油集团渤海钻探工程有限公司 | Multi-cluster current limiting fracturing string of open hole horizontal well and fracturing method thereof |
| CN103015955A (en) * | 2012-12-28 | 2013-04-03 | 中国石油集团渤海钻探工程有限公司 | Open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and fracturing method thereof |
| CN103277078A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
| CN203716931U (en) * | 2014-04-21 | 2014-07-16 | 阜新驰宇石油机械有限公司 | Horizontal well switchable type well cementation slide sleeve staged fracturing valve |
| CN203808964U (en) * | 2014-03-31 | 2014-09-03 | 华源益海石油技术开发（北京）有限公司 | Horizontal well multilevel ejection fracturing tool |
| EP2957714A2 (en) * | 2012-04-30 | 2015-12-23 | Halliburton Energy Services, Inc. | A wellbore servicing method using a delayed activation activatable stimulation assembly |
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2015
- 2015-10-08 CN CN201510645063.7A patent/CN106567700A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006101774A2 (en) * | 2005-03-15 | 2006-09-28 | Peak Completion Technologies, Inc. | Cemented open hole selective fracing system |
| US20120312547A1 (en) * | 2011-06-08 | 2012-12-13 | Halliburton Energy Services, Inc. | Responsively activated wellbore stimulation assemblies and methods of using the same |
| CN102337862A (en) * | 2011-10-17 | 2012-02-01 | 中国石油天然气股份有限公司 | Variable-diameter fracturing valve |
| EP2957714A2 (en) * | 2012-04-30 | 2015-12-23 | Halliburton Energy Services, Inc. | A wellbore servicing method using a delayed activation activatable stimulation assembly |
| CN102979495A (en) * | 2012-12-28 | 2013-03-20 | 中国石油集团渤海钻探工程有限公司 | Multi-cluster current limiting fracturing string of open hole horizontal well and fracturing method thereof |
| CN103015955A (en) * | 2012-12-28 | 2013-04-03 | 中国石油集团渤海钻探工程有限公司 | Open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and fracturing method thereof |
| CN103277078A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
| CN203808964U (en) * | 2014-03-31 | 2014-09-03 | 华源益海石油技术开发（北京）有限公司 | Horizontal well multilevel ejection fracturing tool |
| CN203716931U (en) * | 2014-04-21 | 2014-07-16 | 阜新驰宇石油机械有限公司 | Horizontal well switchable type well cementation slide sleeve staged fracturing valve |
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Application publication date: 20170419 |
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