CN203394497U - Closure-and-pressure-integrated layer-fractured tubular column of hydraulic perforating oil sleeve - Google Patents
Closure-and-pressure-integrated layer-fractured tubular column of hydraulic perforating oil sleeve Download PDFInfo
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- CN203394497U CN203394497U CN201320470541.1U CN201320470541U CN203394497U CN 203394497 U CN203394497 U CN 203394497U CN 201320470541 U CN201320470541 U CN 201320470541U CN 203394497 U CN203394497 U CN 203394497U
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Abstract
The utility model discloses a closure-and-pressure-integrated layer-fractured tubular column of a hydraulic perforating oil sleeve and belongs to the technical field of oil-field and oil-well fracturing construction. A coiled tubing is connected with a safety joint, the coiled tubing at the other end of the safety joint is connected with a first centralizer, the coiled tubing at the other end of the first centralizer is connected with a spray gun, the coiled tubing at the other end of the spray gun is connected with a second centralizer, the coiled tubing at the other end of the second centralizer is connected with a k344 packer, the coiled tubing at the other end of the k344 packer is connected with a hydraulic anchor, and the coiled tubing at the other end of the hydraulic anchor is connected with a check valve. A tubular column is lifted and lowered through the coiled tubing, so that positional accuracy of perforating and fracturing operation can be improved; suspend time of construction can be greatly reduced, service life of a spray nozzle can be improved, and number of times of lifting and lowering of the tubular column and replacing of tools can be reduced.
Description
Technical field
The utility model relates to the integrated layered fracturing pipe string of a kind of hydraulic perforating oil jacket combined pressure, belongs to oilfield pressing crack construction technical field.
Background technology
Hydraulic fracturing technology has been widely used in the exploitation of low permeability pay as the important measures of oil-water well increasing yield and injection, its pressure break scale is also improving constantly year by year.Seam net pressure break " and " volume fracturing "; can play facilitation to the raising of the production capacity of reservoir and ultimate recovery; corresponding pressing crack construction requires also extremely harsh; there is the feature of large discharge capacity, large liquid measure, continuous multi-stage pressure break; and oil pipe area of passage is little, frictional resistance is large; this becomes " bottleneck " that restriction discharge capacity promotes, so adopt oil pipe column cannot meet construction needs.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of hydraulic perforating oil jacket combined pressure integrated layered fracturing pipe string.
The integrated layered fracturing pipe string of a kind of hydraulic perforating oil jacket combined pressure, coiled tubing connects safety joint, the coiled tubing of the other end of safety joint connects the first centralizer, the coiled tubing of the other end of the first centralizer connects spray gun, the coiled tubing of the other end of spray gun connects the second centralizer, the coiled tubing of the other end of the second centralizer connects k344 packer, and the coiled tubing of the other end of k344 packer connects hydraulic anchor, and the coiled tubing of the other end of hydraulic anchor connects ball-and-seat.
A job practices for the integrated layered fracturing pipe string of hydraulic perforating oil jacket combined pressure, contains following steps;
First drifting; Then be lowered to the integrated layered fracturing pipe string of hydraulic perforating oil jacket combined pressure, spray gun arrived and specify perforation layer position; Carry out afterwards coiled tubing hydraulic perforating, annular space sand fracturing construction.Under multistage condition of construction, from lowest level, upwards segmentation operation step by step.Specific construction step is as follows:
A, coiled tubing abrasive perforating: during every section of construction, the operation of spray gun hydraulic perforating is also successively carried out from the bottom to top.By coiled tubing, accurately transfer spray gun to perforated interval extreme lower position, by coiled tubing injection, take sand perforating fluid and carry out perforating job.Perforation is complete, termination of pumping step-down in coiled tubing, and oil jacket annular space pumps into clear water backwash.By carrying fracturing string on coiled tubing to assigned address, again carry out taking sand perforating fluid by coiled tubing injection and carry out perforating job.
B, the sand fracturing of oil jacket annular space: after perforating job completes in this section, by coiled tubing, transfer fracturing string, make packer setting under perforated interval position.Keep in coiled tubing pumping into certain pressure and discharge capacity liquid, make on tubing string string instrument in running order; Now by oil jacket annular space, add sand and carry out this section of pressure break.Pressure break is complete, termination of pumping step-down in coiled tubing, and oil jacket annular space pumps into clear water backwash.
Upper lifting pipe post is to next section of layer position, and circulate above A and B step, until all interval transformations of this well are complete.
The utility model beneficial effect:
A, by putting on coiled tubing, put tubing string, can improve the positional precision of perforation and fracturing work; And can significantly reduce between the stopping times such as construction.
B, coiled tubing abrasive perforating, oil jacket annular fracturing, significantly reduce nozzle sand-passing amount, improves nozzle application life, reduced lower tubular column and replacing instrument number of times.
C, oil jacket annular fracturing, frictional resistance significantly reduces, and the conventional fracturing construction of ground construction pressure ratio pressure drop is low, and operational discharge capacity significantly, higher than conventional fracturing construction, improves than bridging plug fracturing technology efficiency of construction.
D, inflatable packer and hydraulic anchor are arranged on the bottom of spray gun, when multi-section multi-layer pressing crack construction, prevent from altering layer and piston effect.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
The specific embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1,
The integrated layered fracturing pipe string of a kind of hydraulic perforating oil jacket combined pressure, coiled tubing 8 connects safety joint 1, the coiled tubing 8 of the other end of safety joint 1 connects the first centralizer 2, the coiled tubing 8 of the other end of the first centralizer 2 connects spray gun 3, the coiled tubing 8 of the other end of spray gun 3 connects the second centralizer 7, the coiled tubing 8 of the other end of the second centralizer 7 connects k344 packer 4, the coiled tubing 8 of the other end of k344 packer 4 connects hydraulic anchor 5, and the coiled tubing 8 of the other end of hydraulic anchor 5 connects ball-and-seat 6.
Tubing string integrated high-speed principle of water-jet, coiled tubing hydraulic perforating, the sand fracturing of oil jacket annular space, can realize the accuracy of hydraulic perforation fixed point pressure break, the flexibility of the quick preventing spraying operation of coiled tubing, the superiority that reduces construction frictional resistance, can meet large discharge capacity multistage pressing crack construction demand.
Embodiment 2: as shown in Figure 1,
The integrated layered fracturing pipe string of oil jacket combined pressure, from top to bottom each position instrument is coiled tubing, safety joint, centralizer, spray gun, centralizer, k344 packer, hydraulic anchor, ball-and-seat, screen casing and guide head, and connects into successively well.For different-diameter sleeve pipe, adopt various outer diameter size instrument.A well is the new well of a bite that is positioned at south, Z oil field, the extended horizontal depth 602m of this well.21 bunches of this pressing crack construction 9 intervals, operational discharge capacity 5.0-6.0m
3/ min, adds fracturing fluid 3900m altogether
3, proppant 229.5m
3.This well is pressed rear day at initial stage production fluid 32.8t, day produce oil 15.78t.
Construct 2 sections of construction intervals in 1 hour, than other construction technology efficiency, improve more than 3.0-3.3 times, cost further reduces.
Construct 9 sections, change the integrated layered fracturing pipe string of hydraulic perforating oil jacket combined pressure once, higher by 100% than conventional fracturing efficiency of construction.
Operational discharge capacity 5.0-8.0m
3/ min, be the 1.7-2.7 of conventional fracturing construction technology discharge capacity doubly, and annular space low 12.0-25.0MPa of the conventional fracturing construction pressure drop of pressure ratio while adding sand construction; Than bridging plug fracturing technology efficiency of construction, improve 5-6 doubly.
As mentioned above, embodiment of the present utility model is explained, but as long as not departing from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection domain of the present utility model.
Claims (1)
1. the integrated layered fracturing pipe string of hydraulic perforating oil jacket combined pressure, it is characterized in that coiled tubing connects safety joint, the coiled tubing of the other end of safety joint connects the first centralizer, the coiled tubing of the other end of the first centralizer connects spray gun, the coiled tubing of the other end of spray gun connects the second centralizer, the coiled tubing of the other end of the second centralizer connects k344 packer, the coiled tubing of the other end of k344 packer connects hydraulic anchor, and the coiled tubing of the other end of hydraulic anchor connects ball-and-seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470541.1U CN203394497U (en) | 2013-08-02 | 2013-08-02 | Closure-and-pressure-integrated layer-fractured tubular column of hydraulic perforating oil sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470541.1U CN203394497U (en) | 2013-08-02 | 2013-08-02 | Closure-and-pressure-integrated layer-fractured tubular column of hydraulic perforating oil sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394497U true CN203394497U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320470541.1U Expired - Fee Related CN203394497U (en) | 2013-08-02 | 2013-08-02 | Closure-and-pressure-integrated layer-fractured tubular column of hydraulic perforating oil sleeve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221094A (en) * | 2015-09-23 | 2016-01-06 | 中国石油天然气股份有限公司 | Horizontal well two envelope single deck tape-recorder Technics of Prevention of Well Blowout |
| CN111287718A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Method and device for determining perforation parameters and storage medium |
| CN111561276A (en) * | 2020-06-10 | 2020-08-21 | 中国石油天然气股份有限公司 | Split type slip centralizing protector for continuous oil pipe |
-
2013
- 2013-08-02 CN CN201320470541.1U patent/CN203394497U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221094A (en) * | 2015-09-23 | 2016-01-06 | 中国石油天然气股份有限公司 | Horizontal well two envelope single deck tape-recorder Technics of Prevention of Well Blowout |
| CN111287718A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Method and device for determining perforation parameters and storage medium |
| CN111287718B (en) * | 2018-12-07 | 2022-05-06 | 中国石油天然气股份有限公司 | Method and device for determining perforation parameters and storage medium |
| CN111561276A (en) * | 2020-06-10 | 2020-08-21 | 中国石油天然气股份有限公司 | Split type slip centralizing protector for continuous oil pipe |
| CN111561276B (en) * | 2020-06-10 | 2021-08-13 | 中国石油天然气股份有限公司 | Split type slip centralizing protector for continuous oil pipe |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20210802 |
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| CF01 | Termination of patent right due to non-payment of annual fee |