CN104373100A - Continuous oil pipe dragging hydraulic perforation-annular sand adding layering fracturing process - Google Patents
Continuous oil pipe dragging hydraulic perforation-annular sand adding layering fracturing process Download PDFInfo
- Publication number
- CN104373100A CN104373100A CN201310356638.4A CN201310356638A CN104373100A CN 104373100 A CN104373100 A CN 104373100A CN 201310356638 A CN201310356638 A CN 201310356638A CN 104373100 A CN104373100 A CN 104373100A
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- China
- Prior art keywords
- perforation
- coiled tubing
- perforating
- reservoir
- depth
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000004576 sand Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 31
- 239000010410 layer Substances 0.000 claims abstract description 20
- 239000011229 interlayer Substances 0.000 claims abstract description 6
- 238000001802 infusion Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 2
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 238000005488 sandblasting Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
Classifications
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- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/261—Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation
-
- 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
- E21B43/11—Perforators; Permeators
-
- 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
- E21B43/14—Obtaining from a multiple-zone well
Landscapes
- 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 invention discloses a continuous oil pipe dragging hydraulic perforation-annular sand adding layering fracturing process, and belongs to the technical field of hydraulic fracturing of oil-water wells. A crack system in a stratum is analyzed through storage layer characteristics and interlayer shielding conditions; and the perforation number and depth of a fracturing layer are determined. Before the sand blasting perforation, a fracturing perforation tool is put down to a perforation depth through a continuous oil pipe, and a sand blasting perforation construction procedure list is performed in perforation; the perforation tool is upwards lifted through the continuous oil pipe according to the perforation depth for performing more showers; a perforation eyehole is enlarged, so that the friction is low in construction; the annular sand adding is performed to increase the volume and the seepage area of the storage layer, so that a bottom hole and a bottom seepage storage layer are more effectively modified; the annular sand adding construction displacement is 5.0-8.0 m3/min; and the maximal and minimal main stresses of the storage layer are overcome to temporarily generate more new cracks so as to increase the modification degree of the storage layer. The process has the advantage of being suitable for multilayer and large-displacement fracturing modification.
Description
Technical field
The present invention relates to a kind of coiled tubing dragging hydraulic perforating-annular space and add sand separate stratum fracfturing process, belong to oil-water well hydraulic fracturing technology field.
Background technology
In oil field development, conventional hydraulic fracturing technology cannot meet large span, huge discharge, separate stratum fracfturing construction, the maximum 3.0m of conventional levels well pressing crack construction discharge capacity
3/ min; And existing fracturing technology can realize large span, huge discharge, separate stratum fracfturing construction technology is bridging plug fracturing technology, but bridging plug fracturing technology construction cost is high, and efficiency is low.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of coiled tubing dragging hydraulic perforating-annular space and adding sand separate stratum fracfturing process.
A kind of coiled tubing drags hydraulic perforating-annular space and adds sand separate stratum fracfturing process, by reservoir characteristics and interlayer obstruction conditions, analyzes Fracture System in stratum; Determine fractured layer perforation quantity, the degree of depth; Before abrasive perforating, by coiled tubing, pressure break perforation tool is transferred to perforating depth, during perforation, perform abrasive perforating working procedure table; According to perforating depth, by coiled tubing carries perforation tool, carry out many showers; Add big-entry-hole, during construction, frictional resistance is little; Carry out annular space and add sand, what increase reservoir changes volume, increases Reservoir Seepage area, makes bottom outlet, end permeable reservoir strata obtains more effective transformation; It is 5.0-8.0m that annular space adds sand operational discharge capacity
3/ min;
Overcome maximum, the minimum principal stress of reservoir, the how new crack of instantaneous generation, increase reservoir reconstruction degree;
During construction, infusion discharge capacity 0.8m in coiled tubing
3-2.0m
3, guarantee that oil pressure is higher than more than casing pressure 5MPa,
End packer separate stratum fracfturing step; Packer is mounted in the bottom of gun body, during multi-section multi-layer pressing crack construction, prevents from altering layer.
A kind of coiled tubing is executed hydraulic perforating-annular space and is added sand separate stratum fracfturing process, also includes that coiled tubing executes hydraulic perforating, annular space adds sand, end packer separate stratum fracfturing step, containing following steps;
First, coiled tubing is executed and is referred to that connected pipes can make fracturing tool raise and decentralize fast; Hydraulic perforating adopts waterpower spray gun to carry out perforation by oil pipe, can carry out cluster or many showers hole according to construction requirement by coiled tubing is carried;
Secondly, it is construct to add huge discharge that annular space adds sand, can more link up reservoir original fracture, increase new crack, increases Reservoir Seepage area;
By to reservoir characteristics and interlayer obstruction conditions, analyze Fracture System in stratum; Determine fractured layer perforation quantity, the degree of depth; Before abrasive perforating, by coiled tubing, pressure break perforation tool is transferred to perforating depth, during perforation, perform abrasive perforating working procedure table; According to perforating depth, by coiled tubing carries perforation tool, carry out many showers;
Infusion discharge capacity 0.8m in coiled tubing
3-2.0m
3, guarantee that oil pressure is higher than more than casing pressure 5MPa,
Finally, end packer is for ensureing separate stratum fracfturing construction, preventing from altering layer, make more reservoirs effectively be transformed.
Perforation can be realized, technology that annular space adds sand separate stratum fracfturing integration.This Fracturing Technology is main.
Can lead to perforation through tubing, annular space adds sand to ensure the requirement of high flow rate operation, and coiled tubing is executed kinetic energy and raised the efficiency, this will increase the transformation volume of reservoir, reduce the percolation path of oil gas from reservoir to pit shaft, increase seepage area, make low-porosity and low-permeability reservoir effective exploitation.
Advantage of the present invention is applicable to multi-section multi-layer, huge discharge fracturing reform.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is AA-XX well hydraulic fracture operating curve schematic diagram of the present invention.
Fig. 2 is AA-XX well hydraulic fracture operating curve schematic diagram of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Detailed description of the invention
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1 and Figure 2,
By to reservoir characteristics and interlayer obstruction conditions, analyze Fracture System in stratum; Determine fractured layer perforation quantity, the degree of depth.Before abrasive perforating, by coiled tubing, pressure break perforation tool is transferred to perforating depth, during perforation, perform abrasive perforating working procedure table.According to perforating depth, by coiled tubing carries perforation tool, carry out many showers.Coiled tubing executes hydraulic perforating advantage following several respects:
Innovative point of the present invention has following three aspects:
(1) coiled tubing executes hydraulic perforating
1) nearly well can be reduced pollute;
2) preforation tunnel is large, and during construction, frictional resistance is little;
3) reservoir fracturing loss is little;
4) efficiency of construction is high, and labor strength is low.
(2) annular space adds sand
The object that annular space adds sand is high flow rate operation, and what increase reservoir changes volume, increases Reservoir Seepage area, makes bottom outlet, end permeable reservoir strata obtains more effective transformation.It is 5.0-8.0m that annular space adds sand operational discharge capacity
3/ min.Annular space adds sand technique and has the following advantages:
1) in integral construction process, operation pressure is low, and construction easily;
2) operational discharge capacity is large, large to the active force of reservoir, then can overcome maximum, the minimum principal stress of reservoir, the how new crack of instantaneous generation, increase reservoir reconstruction degree;
3) this fracturing technology requires lower to cementing quality;
4) efficiency of construction is high, and cost is low.
Attention: during construction, infusion discharge capacity 0.8m in coiled tubing
3-2.0m
3, guarantee that oil pressure is higher than more than casing pressure 5MPa, its reason has two: 1) and for ensureing packer and hydraulic anchor work; 2) for preventing proppant from flowing in oil pipe.
(3) end packer separate stratum fracfturing
Packer is mounted in the bottom of gun body, when its objective is in order to multi-section multi-layer pressing crack construction, prevents from altering layer.
The effect that the present invention produces has following several respects:
(1) huge discharge separate stratum fracfturing construction is successfully completed, operational discharge capacity 5.0-8.0m
3/ min be 1.7-2.7 times of conventional hydraulic fracturing technology operational discharge capacity, and annular space adds pressure ratio conventional hydraulic pressing crack construction pressure drop low 12.0-25.0MPa when sand is constructed.
(2) coiled tubing dragging hydraulic perforating-annular space adds sand separate stratum fracfturing technique integral construction efficiency than bridging plug fracturing technology efficiency of construction raising 5-6 doubly.
(3) adopt this fracturing technology, fracturing effect is obvious.
Embodiment A A-XX well is the new well of a bite being positioned at south, oil field, Zhaozhou, the extended horizontal depth 602m of this well.This pressing crack construction 9 interval 21 bunches, operational discharge capacity 5.0-6.0m
3/ min, adds fracturing fluid 3900m altogether
3, proppant 229.5m
3.Specific construction parameter is in table 1.
Initial stage daily output 32.8t, day produce oil 15.78t after this well pressure.
Table 1 AA-XX well construction parameter list
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (2)
1. coiled tubing dragging hydraulic perforating-annular space adds a sand separate stratum fracfturing process, it is characterized in that, by reservoir characteristics and interlayer obstruction conditions, analyzing Fracture System in stratum; Determine fractured layer perforation quantity, the degree of depth; Before abrasive perforating, by coiled tubing, pressure break perforation tool is transferred to perforating depth, during perforation, perform abrasive perforating working procedure table; According to perforating depth, by coiled tubing carries perforation tool, carry out many showers; Add big-entry-hole, during construction, frictional resistance is little; Carry out annular space and add sand, what increase reservoir changes volume, increases Reservoir Seepage area, makes bottom outlet, end permeable reservoir strata obtains more effective transformation; It is 5.0-8.0m that annular space adds sand operational discharge capacity
3/ min;
Overcome maximum, the minimum principal stress of reservoir, the how new crack of instantaneous generation, increase reservoir reconstruction degree;
During construction, infusion discharge capacity 0.8m in coiled tubing
3-2.0m
3, guarantee that oil pressure is higher than more than casing pressure 5MPa,
End packer separate stratum fracfturing step; Packer is mounted in the bottom of gun body, during multi-section multi-layer pressing crack construction, prevents from altering layer.
2. a kind of coiled tubing according to claim 1 drags hydraulic perforating-annular space and adds sand separate stratum fracfturing process, it is characterized in that including that coiled tubing executes hydraulic perforating, annular space adds sand, end packer separate stratum fracfturing step, containing following steps;
First, coiled tubing is executed and is referred to that connected pipes can make fracturing tool raise and decentralize fast; Hydraulic perforating adopts waterpower spray gun to carry out perforation by oil pipe, can carry out cluster or many showers hole according to construction requirement by coiled tubing is carried;
Secondly, it is construct to add huge discharge that annular space adds sand, can more link up reservoir original fracture, increase new crack, increases Reservoir Seepage area;
By to reservoir characteristics and interlayer obstruction conditions, analyze Fracture System in stratum; Determine fractured layer perforation quantity, the degree of depth; Before abrasive perforating, by coiled tubing, pressure break perforation tool is transferred to perforating depth, during perforation, perform abrasive perforating working procedure table; According to perforating depth, by coiled tubing carries perforation tool, carry out many showers;
Infusion discharge capacity 0.8m in coiled tubing
3-2.0m
3, guarantee that oil pressure is higher than more than casing pressure 5MPa,
Finally, end packer is for ensureing separate stratum fracfturing construction, preventing from altering layer, make more reservoirs effectively be transformed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310356638.4A CN104373100A (en) | 2013-08-15 | 2013-08-15 | Continuous oil pipe dragging hydraulic perforation-annular sand adding layering fracturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310356638.4A CN104373100A (en) | 2013-08-15 | 2013-08-15 | Continuous oil pipe dragging hydraulic perforation-annular sand adding layering fracturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104373100A true CN104373100A (en) | 2015-02-25 |
Family
ID=52552264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310356638.4A Pending CN104373100A (en) | 2013-08-15 | 2013-08-15 | Continuous oil pipe dragging hydraulic perforation-annular sand adding layering fracturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104373100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756842A (en) * | 2018-04-24 | 2018-11-06 | 中国石油天然气股份有限公司 | A kind of staged fracturing reforming technology improving Oil in Super-low Permeability reservoir horizontal well well yield |
| CN110454128A (en) * | 2019-07-15 | 2019-11-15 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of casing patching blocks the coiled tubing drag fracturing method of old well reservoir |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060207763A1 (en) * | 2005-03-15 | 2006-09-21 | Peak Completion Technologies, Inc. | Cemented open hole selective fracing system |
| CN101059070A (en) * | 2006-04-21 | 2007-10-24 | 中国石油天然气股份有限公司 | Perforation, fracturing integrated method and its technique pipe |
| US20080164026A1 (en) * | 2007-01-04 | 2008-07-10 | Johnson Michael H | Method of isolating and completing multi-zone frac packs |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756842A (en) * | 2018-04-24 | 2018-11-06 | 中国石油天然气股份有限公司 | A kind of staged fracturing reforming technology improving Oil in Super-low Permeability reservoir horizontal well well yield |
| CN110454128A (en) * | 2019-07-15 | 2019-11-15 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of casing patching blocks the coiled tubing drag fracturing method of old well reservoir |
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Application publication date: 20150225 |
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