CN104632168A - Hydraulic sand-blasting perforation large-displacement fracturing process pipe column and method - Google Patents
Hydraulic sand-blasting perforation large-displacement fracturing process pipe column and method Download PDFInfo
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- CN104632168A CN104632168A CN201310573584.7A CN201310573584A CN104632168A CN 104632168 A CN104632168 A CN 104632168A CN 201310573584 A CN201310573584 A CN 201310573584A CN 104632168 A CN104632168 A CN 104632168A
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- ball seat
- ball
- packer
- sandblaster
- sealer
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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
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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
- E21B43/11—Perforators; Permeators
- E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Disintegrating Or Milling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A hydraulic sand-blasting perforation large-displacement fracturing process pipe column and a method belong to the technical field of oil and gas field exploration and development. The hydraulic sand blaster is connected with a first ball seat, the other end of the first ball seat is connected with a throttling sand blaster, the other end of the throttling sand blaster is connected with a K344 packer, the other end of the K344 packer is connected with a second ball seat, the other end of the second ball seat is connected with a sieve tube, the other end of the sieve tube is connected with a plug, and the first ball seat is provided with a sealing ball corresponding to a ball seat at the lower end of the sand blaster; the second ball seat has a sealing ball corresponding to the ball seat at the lower end of the K344 packer. This adoption sandblast perforation fracturing integration tubular column changes liquid outlet channel through throwing not unidimensional ball sealer, adopts different liquid outlet channel in the construction stage of difference: the construction requirement of multi-section fracturing by one-time tools is met.
Description
Technical field
The present invention relates to a kind of hydraulic jet perforation huge discharge fracturing technology tubing string and method, belong to oilfield prospecting developing technical field.
Background technology
In recent years, along with the development of exploration and development technology, the exploitation of unconventional petroleum resources more and more comes into one's own.Volume fracturing, as one of important means transformed unconventional reservoir, also receives publicity more and more.Volume fracturing refer to adopt in hydraulic fracturing process huge discharge, large sand amount, large liquid measure, low sand ratio injection mode intrinsic fracture is constantly expanded and brittle rock produces shearing slip, form intrinsic fracture and the interlaced fracture network of man-made fracture, thus increase transformation volume, improve initil output and ultimate recovery.
At present, bridging plug staged fracturing technique, open hole packer staged fracturing technique and hydraulic sand blasting staged fracturing technique etc. for the external experimental study of water of oil-gas field horizontal well volume fracturing.Because hydraulic sand blasting staged fracturing technique has, construction risk is little, efficiency is high, cost is low, to features such as reservoir damage are little, become one of agent technology of Changqing oilfields horizontal well volume pressure, but discharge capacity is large in volume fracturing work progress, sand amount is large, serious to ejector erosion injury, the construction requirement that instrument carries out multistage pressure break cannot be met.Therefore, the instrument erosion damage in hydraulic jet perforation huge discharge fracturing process becomes the problem that must solve.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of hydraulic jet perforation huge discharge fracturing technology tubing string and method.
A kind of hydraulic jet perforation huge discharge fracturing technology tubing string, hydraulic blast connects the first ball seat, the other end of the first ball seat connects throttling sandblaster, the other end of throttling sandblaster connects K344 packer, the other end of K344 packer connects the second ball seat, the other end of the second ball seat connects screen casing, and the other end of screen casing connects plug, and the first ball seat has the ball sealer corresponding with sandblaster lower end ball seat; Second ball seat has the ball sealer corresponding with K344 packer lower end ball seat.
A kind of hydraulic jet perforation huge discharge fracturing technology tubing string, solve discharge capacity in volume fracturing work progress large, sand amount is large, serious to ejector erosion injury, cannot meet the problem that instrument carries out the construction requirement of multistage pressure break.
In order to achieve the above object, the invention provides a kind of hydraulic jet perforation huge discharge fracturing technology tubing string, its special character is, adopts different liquid outlet channels in the different construction stages.
A using method for hydraulic jet perforation huge discharge fracturing technology tubing string, comprises the following steps:
Step 1), instrument to be pressed: under the process pipe string that hydraulic blast, ball seat, throttling sandblaster, K344 packer, ball seat, screen casing, plug are formed by connecting, enter predetermined transformation position;
Step 2), drop into the ball sealer corresponding with sandblaster lower end ball seat from well head, the pumping of employing small displacement, the following tubing string of shutoff ball seat when ball sealer is seated on the ball seat of sandblaster lower end;
Step 3), from well head inject load fluid, carry out abrasive perforating by hydraulic blast, perforation terminates rear reacting cycle and is washed out by ball sealer;
Step 4), drop into the ball sealer corresponding with K344 packer lower end ball seat from well head, the pumping of employing small displacement, when ball sealer is seated in after on the ball seat of K344 packer lower end, carries out huge discharge pressing crack construction;
Step 5), pressure break terminate rear reacting cycle and are washed out by ball sealer, are carried by tubing string and constructing to next construction layer position;
Step 2) and step 4) in drop into after ball sealer from well head and need with pump small displacement pumping sealing ball until ball sealer is seated in corresponding ball seat.
Beneficial effect of the present invention is as follows: adopt the fracturing integrated tubing string of abrasive perforating, change liquid outlet channel by the ball sealer throwing different size, adopt different liquid outlet channels in the different construction stages: the abrasive perforating stage adopts hydraulic blast to carry out abrasive perforating; Pressure break stage employing throttling sandblaster carries out pressure break and adds sand, adopt major path sandblaster to reduce load fluid while reducing oil pipe internal pressure loss to injure the erosion of instrument, to volume fracturing, there is good compliance and longer application life, the construction requirement that instrument carries out multistage pressure break can be met.
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 structural representation of the present invention;
Fig. 2 is the construction schematic diagram that hydraulic blast carries out abrasive perforating;
Fig. 3 is throttling sandblaster and the work of K344 packer, carries out the construction schematic diagram that pressure break adds sand;
Tubing string is carried carrying out construction schematic diagram to next construction layer position by Fig. 4.
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, Figure 2, Figure 3 and Figure 4,
A kind of hydraulic jet perforation huge discharge fracturing technology tubing string, mainly comprises: hydraulic blast, ball seat, throttling sandblaster, K344 packer, ball seat, screen casing, plug.The construction method of this process pipe string is: drop into the ball sealer corresponding with sandblaster lower end ball seat from well head, the following tubing string of shutoff ball seat when ball sealer is seated on the ball seat of sandblaster lower end, abrasive perforating is carried out by hydraulic blast, perforation terminates rear reacting cycle and is washed out by ball sealer, the ball sealer corresponding with same K344 packer lower end ball seat is dropped into again from well head, carry out huge discharge pressing crack construction, pressure break terminates rear reacting cycle and is washed out by ball sealer, tubing string is carried and repeats said process to next construction layer position, carry out the pressing crack construction of lower one deck position.This process pipe string structure is simple, easy to operate, adopts throttling sandblaster to carry out adding sand reduce oil pipe internal pressure loss, for hydraulic jet perforation huge discharge pressing crack construction provides approach in the pressure break stage.
A kind of hydraulic jet perforation huge discharge fracturing technology tubing string, hydraulic blast 1 connects the first ball seat 2, the other end of the first ball seat 2 connects throttling sandblaster 3, the other end of throttling sandblaster 3 connects K344 packer 4, the other end of K344 packer 4 connects the second ball seat 5, the other end of the second ball seat 5 connects screen casing 6, and the other end of screen casing 6 connects plug 7, first ball seat 2 ball sealer 8 corresponding with sandblaster lower end ball seat; Second ball seat 5 has the ball sealer 9 corresponding with K344 packer lower end ball seat.
A kind of hydraulic jet perforation huge discharge fracturing technology tubing string,
1, this process pipe string is linked in sequence by instruments such as hydraulic blast, ball seat, throttling sandblaster, K344 packer, ball seat, screen casing, plugs and forms.
2, a kind of hydraulic jet perforation huge discharge fracturing technology tubing string according to claim 1, its using method comprises the following steps:
1), by instrument connect according to predefined procedure, under enter precalculated position;
2), from well head the ball sealer corresponding with sandblaster lower end ball seat is dropped into, the following tubing string of shutoff ball seat when ball sealer is seated on the ball seat of sandblaster lower end;
3), from well head inject load fluid, carry out abrasive perforating by hydraulic blast, perforation terminates rear reacting cycle and is washed out by ball sealer;
4), from well head drop into the ball sealer corresponding with same K344 packer lower end ball seat, carry out huge discharge pressing crack construction;
5), pressure break terminates rear reacting cycle and washed out by ball sealer, carried by tubing string and constructing to next construction layer position.
3, a kind of hydraulic jet perforation huge discharge fracturing technology tubing string according to claim 2, step 2) and step 4) in drop into after ball sealer from well head and need with pump small displacement pumping sealing ball until ball sealer is seated in corresponding ball seat.
Be illustrated in figure 1 the structural representation of hydraulic jet perforation huge discharge fracturing technology tubing string provided by the invention, this process pipe string is formed by connecting according to predefined procedure by different instruments, mainly comprises: 1, hydraulic blast; 2, ball seat; 3, throttling sandblaster; 4, K344 packer; 5, ball seat; 6, screen casing; 7, plug.
On the basis of Fig. 1, composition graphs 2-4, describes in detail to the work progress that hydraulic jet perforation huge discharge fracturing technology tubing string provided by the invention will carry out: after being linked in sequence by instrument, will enter predetermined transformation position under process pipe string; Drop into the ball sealer corresponding with sandblaster lower end ball seat from well head, adopt small displacement pumping, the following tubing string of shutoff ball seat when ball sealer is seated on the ball seat of sandblaster lower end; Inject load fluid from well head, carry out abrasive perforating by hydraulic blast, perforation terminates rear reacting cycle and is washed out by ball sealer; Drop into the ball sealer corresponding with K344 packer lower end ball seat from well head, adopt small displacement pumping, when ball sealer is seated in after on the ball seat of K344 packer lower end, carry out huge discharge pressing crack construction; Pressure break terminates rear reacting cycle and is washed out by ball sealer, is carried by tubing string and constructing to next construction layer position.
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. a hydraulic jet perforation huge discharge fracturing technology tubing string, it is characterized in that hydraulic blast connects the first ball seat, the other end of the first ball seat connects throttling sandblaster, the other end of throttling sandblaster connects K344 packer, the other end of K344 packer connects the second ball seat, the other end of the second ball seat connects screen casing, and the other end of screen casing connects plug, and the first ball seat has the ball sealer corresponding with sandblaster lower end ball seat; Second ball seat has the ball sealer corresponding with K344 packer lower end ball seat.
2. the process of a kind of hydraulic jet perforation huge discharge fracturing technology tubing string according to claim 1, is characterized in that:
Step 1), instrument to be pressed: under the process pipe string that hydraulic blast, ball seat, throttling sandblaster, K344 packer, ball seat, screen casing, plug are formed by connecting, enter predetermined transformation position;
Step 2), drop into the ball sealer corresponding with sandblaster lower end ball seat from well head, the pumping of employing small displacement, the following tubing string of shutoff ball seat when ball sealer is seated on the ball seat of sandblaster lower end;
Step 3), from well head inject load fluid, carry out abrasive perforating by hydraulic blast, perforation terminates rear reacting cycle and is washed out by ball sealer;
Step 4), drop into the ball sealer corresponding with K344 packer lower end ball seat from well head, the pumping of employing small displacement, when ball sealer is seated in after on the ball seat of K344 packer lower end, carries out huge discharge pressing crack construction;
Step 5), pressure break terminate rear reacting cycle and are washed out by ball sealer, are carried by tubing string and constructing to next construction layer position;
Step 2) and step 4) in drop into after ball sealer from well head and need with pump small displacement pumping sealing ball until ball sealer is seated in corresponding ball seat.
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| CN201310573584.7A CN104632168B (en) | 2013-11-15 | 2013-11-15 | Hydraulic sand-blasting perforation large-displacement fracturing process pipe column and method |
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| CN201310573584.7A CN104632168B (en) | 2013-11-15 | 2013-11-15 | Hydraulic sand-blasting perforation large-displacement fracturing process pipe column and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089172A (en) * | 2016-06-08 | 2016-11-09 | 中国石油天然气股份有限公司 | Hydraulic full-bore large-displacement fracturing process |
| CN106337673A (en) * | 2016-09-18 | 2017-01-18 | 中国石油天然气股份有限公司 | Multi-layer fracturing process pipe column and construction method thereof |
| CN107271304A (en) * | 2016-04-08 | 2017-10-20 | 中国石油化工股份有限公司 | Throttle sanding machine erosion test device and method |
| CN110847875A (en) * | 2019-11-19 | 2020-02-28 | 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 | Short-time throttling pipe column and short-time throttling method |
| CN112360419A (en) * | 2020-11-16 | 2021-02-12 | 中国石油天然气股份有限公司 | Small-displacement energy supplementing and large-displacement fracturing continuous fracturing string and fracturing method |
| CN115479716A (en) * | 2022-09-15 | 2022-12-16 | 中国石油天然气股份有限公司 | A test device and method for testing the differential pressure of K344 packer seat seal under confining pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107271304A (en) * | 2016-04-08 | 2017-10-20 | 中国石油化工股份有限公司 | Throttle sanding machine erosion test device and method |
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| CN110847875A (en) * | 2019-11-19 | 2020-02-28 | 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 | Short-time throttling pipe column and short-time throttling method |
| CN110847875B (en) * | 2019-11-19 | 2023-12-05 | 中国石油天然气集团有限公司 | Short-time throttling pipe column and short-time throttling method |
| CN112360419A (en) * | 2020-11-16 | 2021-02-12 | 中国石油天然气股份有限公司 | Small-displacement energy supplementing and large-displacement fracturing continuous fracturing string and fracturing method |
| CN115479716A (en) * | 2022-09-15 | 2022-12-16 | 中国石油天然气股份有限公司 | A test device and method for testing the differential pressure of K344 packer seat seal under confining pressure |
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| CN104632168B (en) | 2017-10-17 |
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