CN104695927A - Fracturing and completion integrated method adopting coiled tubing and production tubing combined tubing string - Google Patents
Fracturing and completion integrated method adopting coiled tubing and production tubing combined tubing string Download PDFInfo
- Publication number
- CN104695927A CN104695927A CN201510038874.0A CN201510038874A CN104695927A CN 104695927 A CN104695927 A CN 104695927A CN 201510038874 A CN201510038874 A CN 201510038874A CN 104695927 A CN104695927 A CN 104695927A
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- fracturing
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- production
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- coiled tubing
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 8
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 241000254175 Anthonomus grandis Species 0.000 claims description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 6
- 238000005488 sandblasting Methods 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of oil and gas field fracturing, particularly relates to a fracturing and completion integrated method adopting a coiled tubing and production tubing combined tubing string. The method specially comprises steps as follows: 1) placing the combined tubing string down to a shaft; 2) setting a first section; 3) performing sand blasting perforation on the first section; 4) fracturing the first layer section; 5) injecting a fracturing fluid; 6) lifting up a fracturing tubular column to a designed perforation position of a second section after the first section is fractured, and repeating Steps 2)-5) to finish the fracturing construction of all construction sections; 7) after construction, placing the fracturing tubular column at the bottom of an artificial well, and throwing steel balls from the wellhead to enable a hydraulic releasing tool to realize release; 8) draining the fluid and putting the oil and gas into production. With adoption of the method, after fracturing, the production tubular column can be placed one less time, so that damage to a reservoir is reduced while the working cycle is shortened.
Description
Technical field
The invention belongs to oil-gas field fracturing technical field, be specifically related to a kind of coiled tubing and production tube compound tube string pressure break and completion integral method.
Background technology
Hydraulic sand blasting fracturing technique beam hole, fracturing integrated, become the agent technology of exploitation low permeability oil and gas field, in conjunction with coiled tubing can the feature of dragging with pressure, have that the transformation number of plies is unrestricted, pit shaft keeps the routine techniques such as big orifice incomparable after pressure break a advantage.
Wherein coiled tubing perforation, the method for annular fracturing, the packing of anchoring type mechanical packer has that packing is reliable, pressure break discharge capacity is large, efficiency of construction high, applies comparatively extensive.But technique pressure break is complete trips out fracturing string for this, there is larger construction risk on the one hand, on the other hand, for low-voltage and low-yield gas well, it in process of production, have hydro carbons condensed liquid or formation water inflow shaft bottom, due to its fluid-carrying capability of Large Diameter Pipeline oil pipe poor (extraction gas can not reach the requirement taking liquid continuously because flow velocity is too small), hydrops in pit shaft is caused to be on the increase, shaft bottom back pressure constantly increases, sometimes even gas well can be killed completely so that closing well, the interval of severe contamination pressure break, cause the injury to reservoir, directly have influence on gas well yield and coefficient of mining.
Summary of the invention
The object of this invention is to provide a kind of coiled tubing and production tube compound tube string pressure break and completion integral method, to simplify working procedure, reduce kill-job to the injury of reservoir.
Technical scheme of the present invention is:
A kind of coiled tubing and production tube compound tube string pressure break and completion integral method, comprise the following steps:
Compound tube string is entered: be connected with connector in turn by coiled tubing lower end, production tube, hydraulic releasing, mechanical casing collar locator, ejector, packer, guiding check valve be combined into compound tube string, in lower going-into-well cylinder under step 1);
Step 2) the first interval sets: located by casing collar locator (CCL), ejector is aimed at first paragraph design perforating site, set packer, then carries discharge capacity 1.0 m
3/ min, closes annular space gate, and when pressure reaches more than 20MPa, termination of pumping 3 ~ 5min, observes casing pressure stable case, if pressure does not fall, then illustrates that packer is effective;
Step 3) first interval abrasive perforating: after testing seal about packer is qualified, open sleeve gate, injects 0.2m from compound tube string
3/ min perforating fluid, when perforating fluid is to injector nozzle distance 200m, improves discharge capacity to 1.0 m
3/ min, abrasive perforating, perforating fluid returns out from oil jacket annular space;
Step 4) first interval pressure break: after perforation, closes sleeve gate, controls annular space discharge capacity 1.0 m
3/ min, compound tube string injection discharge capacity remains on 0.1 m simultaneously
3/ min carries out burst test, if this layer breaks, continues subsequent construction, if it is unsuccessful to break, then continues perforation or acid filling liquid, until this layer breaks;
After step 5) first interval formation fracture, inject fracturing fluid from oil jacket annular space, keep compound tube string 0.1 m simultaneously
3/ min injects base fluid;
After the complete first paragraph of step 6) pressure break, by fracturing string being carried to second segment design perforating site, repeat step 2)-5), complete the pressing crack construction of follow-up all construction intervals;
After step 7) construction, fracturing string is transferred to position, artificial bottom of a well, steel ball is thrown from well head, drop down onto after hydraulic releasing until steel ball, compound tube serially add be depressed into hydraulic releasing realize give up, tool string below hydraulic releasing drops on artificial bottom of a well, and then steel ball is flushed out pit shaft by oil jacket annular space huge discharge reacting cycle;
8) carry compound tube string on, unload coiled tubing and connector, production tube is hung on wellhead assembly, for discharge opeing and the operation of Oil/gas Well.
Described packer is Y241 packer.
Base fluid described in step 5) is guanidine matrix liquid.
Described wellhead assembly is connected to form by boll-weevil hanger, production tree.
This coiled tubing provided by the invention and production tube compound tube string pressure break and completion integral method, can realize following effect:
The first, after pressure break, underground tool string is given up and stays artificial bottom of a well, and trip out coiled tubing and connector, production tube is suspended on wellhead assembly and directly produces, next time flow string can be lacked, shorten duty cycle;
The second, after pressure break, do not need flow string under kill-job, can reservoir damage be reduced.
Accompanying drawing explanation
Fig. 1 is compound tube string structure schematic diagram.
In figure: 1, coiled tubing; 2, connector; 3, production tube; 4, hydraulic releasing; 5, mechanical casing collar locator; 6, ejector; 7, packer; 8, guiding check valve; 9, wellhead assembly.
Detailed description of the invention
Embodiment 1:
The object of the present invention is to provide a kind of coiled tubing and production tube compound tube string pressure break and completion integral method, to simplify working procedure, reduce kill-job to the injury of reservoir.
Present embodiments provide a kind of coiled tubing as shown in Figure 1 and production tube compound tube string pressure break and completion integral method, comprise the following steps:
Compound tube string is entered: be connected with connector 2 in turn by coiled tubing 1 lower end, production tube 3, hydraulic releasing 4, mechanical casing collar locator 5, ejector 6, Y241 packer, guiding check valve 8 be combined into compound tube string, in lower going-into-well cylinder under step 1);
Step 2) the first interval sets: located by casing collar locator (CCL), ejector 6 aimed at first paragraph design perforating site, set Y241 packer, then carry discharge capacity 1.0 m
3/ min, closes annular space gate, and when pressure reaches more than 20MPa, termination of pumping 3min, observes casing pressure stable case, if pressure does not fall, then illustrates that Y241 packer is effective;
Step 3) first interval abrasive perforating: packer 7 opens sleeve gate after testing involution lattice, injects 0.2m from compound tube string
3/ min perforating fluid, when perforating fluid is to ejector 6 nozzle distance 200m, improves discharge capacity to 1.0 m
3/ min, abrasive perforating, perforating fluid returns out from oil jacket annular space;
Step 4) first interval pressure break: after perforation, closes sleeve gate, controls annular space discharge capacity 1.0 m
3/ min, compound tube string injection discharge capacity remains on 0.1 m simultaneously
3/ min carries out burst test, if this layer breaks, continues subsequent construction, if it is unsuccessful to break, then continues perforation or acid filling liquid, until this layer breaks;
After step 5) first interval formation fracture, inject fracturing fluid from oil jacket annular space, keep compound tube string 0.1 m simultaneously
3/ min injects guanidine matrix liquid;
After the complete first paragraph of step 6) pressure break, by fracturing string being carried to second segment design perforating site, repeat step 2)-5), complete the pressing crack construction of follow-up all construction intervals;
After step 7) construction, fracturing string is transferred to position, artificial bottom of a well, steel ball is thrown from well head, drop down onto after hydraulic releasing 4 until steel ball, compound tube serially add be depressed into hydraulic releasing 4 realize give up, tool string below hydraulic releasing 4 drops on artificial bottom of a well, and then steel ball is flushed out pit shaft by oil jacket annular space huge discharge reacting cycle;
8) carry compound tube string on, unload coiled tubing 1 and connector 2, production tube 3 is hung on wellhead assembly 9, for discharge opeing and the operation of Oil/gas Well.
Wellhead assembly 9 is connected to form by boll-weevil hanger, production tree, belongs to known technology.
In sum, the present invention, compared with existing process, has the following advantages:
The first, after pressure break, underground tool string is given up and stays artificial bottom of a well, and trip out coiled tubing, production tube is suspended on wellhead assembly and directly produces, next time flow string can be lacked, shorten duty cycle;
The second, after pressure break, do not need flow string under kill-job, can reservoir damage be reduced.
The method of testing that the present invention does not describe in detail is method of testing conventional in this area or existing method, does not describe one by one at this.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (4)
1. coiled tubing and production tube compound tube string pressure break and a completion integral method, is characterized in that, comprise the following steps:
Compound tube string is entered: be connected with connector (2) in turn by coiled tubing (1) lower end, production tube (3), hydraulic releasing (4), mechanical casing collar locator (5), ejector (6), packer (7), guiding check valve (8) be combined into compound tube string, in lower going-into-well cylinder under step 1);
Step 2) the first interval sets: located by casing collar locator (CCL), ejector (6) is aimed at first paragraph design perforating site, set packer (7), then carries discharge capacity 1.0 m
3/ min, closes annular space gate, and when pressure reaches more than 20MPa, termination of pumping 3min, observes casing pressure stable case, if pressure does not fall, then illustrates that packer (7) is effective;
Step 3) first interval abrasive perforating: after involution lattice tested by packer (7), open sleeve gate, injects 0.2m from compound tube string
3/ min perforating fluid, when perforating fluid is to ejector (6) nozzle distance 200m, improves discharge capacity to 1.0 m
3/ min, abrasive perforating, perforating fluid returns out from oil jacket annular space;
Step 4) first interval pressure break: after perforation, closes sleeve gate, controls annular space discharge capacity 1.0 m
3/ min, compound tube string injection discharge capacity remains on 0.1 m simultaneously
3/ min carries out burst test, if this layer breaks, continues subsequent construction, if it is unsuccessful to break, then continues perforation or acid filling liquid, until this layer breaks;
After step 5) first interval formation fracture, inject fracturing fluid from oil jacket annular space, keep compound tube string 0.1 m simultaneously
3/ min injects base fluid;
After the complete first paragraph of step 6) pressure break, by fracturing string being carried to second segment design perforating site, repeat step 2)-5), complete the pressing crack construction of follow-up all construction intervals;
After step 7) construction, fracturing string is transferred to position, artificial bottom of a well, steel ball is thrown from well head, drop down onto after hydraulic releasing (4) until steel ball, compound tube serially add be depressed into hydraulic releasing (4) realize give up, tool string below hydraulic releasing (4) drops on artificial bottom of a well, and then steel ball is flushed out pit shaft by oil jacket annular space huge discharge reacting cycle;
8) carry compound tube string on, unload coiled tubing (1) and connector (2), production tube (3) is hung on wellhead assembly (9), for discharge opeing and the operation of Oil/gas Well.
2. a kind of coiled tubing according to claim 1 and production tube compound tube string pressure break and completion integral method, is characterized in that: described packer (7) is Y241 packer.
3. a kind of coiled tubing according to claim 1 and production tube compound tube string pressure break and completion integral method, is characterized in that: base fluid described in step 5) is guanidine matrix liquid.
4. a kind of coiled tubing according to claim 1 and production tube compound tube string pressure break and completion integral method, is characterized in that: described wellhead assembly (9) is connected to form by boll-weevil hanger, production tree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038874.0A CN104695927B (en) | 2015-01-27 | 2015-01-27 | A kind of coiled tubing and production tube compound tube string pressure break and completion integral method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038874.0A CN104695927B (en) | 2015-01-27 | 2015-01-27 | A kind of coiled tubing and production tube compound tube string pressure break and completion integral method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104695927A true CN104695927A (en) | 2015-06-10 |
| CN104695927B CN104695927B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654207A (en) * | 2017-11-16 | 2018-02-02 | 中国石油集团川庆钻探工程有限公司 | Coiled tubing horizontal well pinpoints preset sand plug segmentation method |
| CN107939376A (en) * | 2017-11-27 | 2018-04-20 | 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 gas well gas testing operation integrated synthesis completion method |
| CN108756845A (en) * | 2018-05-03 | 2018-11-06 | 肖毅 | A kind of dilatation increment explosion fracturing method |
| CN108952664A (en) * | 2018-08-22 | 2018-12-07 | 中国石油集团渤海钻探工程有限公司 | A kind of oil/gas well straight well orientation water-jet multistage fracturing method |
| CN109339855A (en) * | 2018-11-27 | 2019-02-15 | 中煤科工集团西安研究院有限公司 | Continuous pipe perforation staged fracturing method in coal mine gas extraction jumping chisel hole sleeve |
| CN109630083A (en) * | 2018-11-22 | 2019-04-16 | 西南石油大学 | A kind of abrasive perforating annular fracturing ground control system and method |
| CN110644954A (en) * | 2019-09-03 | 2020-01-03 | 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 | One-trip drilling operation pipe column for casing patching well and operation method |
| CN111206878A (en) * | 2018-11-21 | 2020-05-29 | 中国石油天然气股份有限公司 | Well completion method |
| CN111255427A (en) * | 2020-01-16 | 2020-06-09 | 中国石油天然气股份有限公司 | Method for mechanical separate-layer fracturing of oil well |
| CN111648754A (en) * | 2020-05-19 | 2020-09-11 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and downhole throttling production integrated process pipe column and method thereof |
| CN112282718A (en) * | 2020-11-05 | 2021-01-29 | 中国石油天然气股份有限公司 | Combined pipe string for sidetracking well and slim hole well and use method |
| CN112324415A (en) * | 2020-11-05 | 2021-02-05 | 中国石油天然气股份有限公司 | Combined segmented reconstruction method for selective repeated reconstruction of old well |
| CN112431579A (en) * | 2020-08-11 | 2021-03-02 | 中国石油天然气股份有限公司 | Preset small-diameter pipe internal fracturing device and method for side drilling well and small-hole well |
| CN113530517A (en) * | 2021-09-17 | 2021-10-22 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
| CN113530509A (en) * | 2020-04-15 | 2021-10-22 | 中国石油天然气股份有限公司 | Continuous separate-layer fracturing method for small well and fracturing pipe column |
| CN115217460A (en) * | 2021-04-21 | 2022-10-21 | 中国石油天然气股份有限公司 | Acidizing and fracturing method |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654207A (en) * | 2017-11-16 | 2018-02-02 | 中国石油集团川庆钻探工程有限公司 | Coiled tubing horizontal well pinpoints preset sand plug segmentation method |
| CN107939376A (en) * | 2017-11-27 | 2018-04-20 | 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 gas well gas testing operation integrated synthesis completion method |
| CN108756845A (en) * | 2018-05-03 | 2018-11-06 | 肖毅 | A kind of dilatation increment explosion fracturing method |
| CN108756845B (en) * | 2018-05-03 | 2023-05-12 | 肖毅 | Capacity-expansion increment deflagration fracturing method |
| CN108952664A (en) * | 2018-08-22 | 2018-12-07 | 中国石油集团渤海钻探工程有限公司 | A kind of oil/gas well straight well orientation water-jet multistage fracturing method |
| CN111206878B (en) * | 2018-11-21 | 2021-07-02 | 中国石油天然气股份有限公司 | Well completion method |
| CN111206878A (en) * | 2018-11-21 | 2020-05-29 | 中国石油天然气股份有限公司 | Well completion method |
| CN109630083A (en) * | 2018-11-22 | 2019-04-16 | 西南石油大学 | A kind of abrasive perforating annular fracturing ground control system and method |
| CN109339855A (en) * | 2018-11-27 | 2019-02-15 | 中煤科工集团西安研究院有限公司 | Continuous pipe perforation staged fracturing method in coal mine gas extraction jumping chisel hole sleeve |
| CN110644954A (en) * | 2019-09-03 | 2020-01-03 | 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 | One-trip drilling operation pipe column for casing patching well and operation method |
| CN111255427A (en) * | 2020-01-16 | 2020-06-09 | 中国石油天然气股份有限公司 | Method for mechanical separate-layer fracturing of oil well |
| CN113530509A (en) * | 2020-04-15 | 2021-10-22 | 中国石油天然气股份有限公司 | Continuous separate-layer fracturing method for small well and fracturing pipe column |
| CN111648754A (en) * | 2020-05-19 | 2020-09-11 | 中国石油天然气股份有限公司 | Coiled tubing fracturing and downhole throttling production integrated process pipe column and method thereof |
| CN112431579A (en) * | 2020-08-11 | 2021-03-02 | 中国石油天然气股份有限公司 | Preset small-diameter pipe internal fracturing device and method for side drilling well and small-hole well |
| CN112324415A (en) * | 2020-11-05 | 2021-02-05 | 中国石油天然气股份有限公司 | Combined segmented reconstruction method for selective repeated reconstruction of old well |
| CN112282718A (en) * | 2020-11-05 | 2021-01-29 | 中国石油天然气股份有限公司 | Combined pipe string for sidetracking well and slim hole well and use method |
| CN115217460A (en) * | 2021-04-21 | 2022-10-21 | 中国石油天然气股份有限公司 | Acidizing and fracturing method |
| CN115217460B (en) * | 2021-04-21 | 2024-03-26 | 中国石油天然气股份有限公司 | Acidizing fracturing method |
| CN113530517A (en) * | 2021-09-17 | 2021-10-22 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
| CN113530517B (en) * | 2021-09-17 | 2021-12-14 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
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