CN104563996A - Fracturing tubular column dragged under pressure and fracturing method thereof - Google Patents
Fracturing tubular column dragged under pressure and fracturing method thereof Download PDFInfo
- Publication number
- CN104563996A CN104563996A CN201310520275.3A CN201310520275A CN104563996A CN 104563996 A CN104563996 A CN 104563996A CN 201310520275 A CN201310520275 A CN 201310520275A CN 104563996 A CN104563996 A CN 104563996A
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- China
- Prior art keywords
- fracturing
- construction
- tubing string
- perforating
- perforation
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a fracturing tubular column dragged under pressure and a fracturing method thereof, which are designed for increasing the tool construction efficiency and lowering the construction cost. The fracturing tubular column consists of a hydraulic controllable switching valve and a perforation fracturing tubular column which are connected with each other through an oil pipe. Before perforation fracturing construction, the perforation fracturing tubular column is placed into a well, the hydraulic controllable switching valve is arranged at a position above a kickoff point, and normal perforation fracturing construction is performed; after construction, the hydraulic controllable switching valve is closed by projecting a ball, and the perforation fracturing tubular column is dragged under pressure to a next-segment reservoir stratum position to perform next-segment perforation fracturing construction; after fracturing construction of all perforation segments is finished, blowout is performed once, and the well is washed completely. By adopting the method, blowout after perforation fracturing construction of each segment can be prevented, the construction time is saved, and environmental pollution caused by blowout liquid is prevented; stratum overflow liquid can be prevented from damaging the perforation tubular column after perforation fracturing, and the construction efficiency is increased; the labor intensity of workers is lowered, the requirement of expansion of a well site for blowout is omitted, and the construction cost is lowered.
Description
Technical field
The present invention relates to a kind of drag fracturing tubing string with pressure and fracturing process thereof, belong to oil-gas field fracturing renovation technique field.
Background technology
At present, oil field mainly adopts hydro-jet fracturing technology to carry out staged fracturing of horizontal well and old well reform, and this technique obtains with features such as its exclusive perforating and fracturing integration operation, high efficiency of construction and low-risks and applies widely.But, after oil well transformation, adjust drilling tool with open flow, to carry out next section of rebuilding construction.Open flow construction will extend well site, prepares the mud pit depositing hydrojet, supporting all kinds of correlative and facility.The blowout prevention time reaches 20 hours most, and construction period lengthens, and cost is high, constrains the development of staged fracturing of horizontal well renovation technique to high efficiency and low cost direction.
Summary of the invention
The object of the present invention is to provide a kind of drag fracturing tubing string with pressure and fracturing process thereof, pollute to reduce open flow operation and to return discharge opeing, improve instrument efficiency of construction, reduce costs.
The perforating and fracturing tubing string that drag fracturing tubing string with pressure of the present invention is provided with ejector by the hydraulic pressure gate-controlled switch valve connected by oil pipe and upper end forms.Before carrying out perforating and fracturing construction, by perforating and fracturing tubing string lower going-into-well, hydraulic pressure gate-controlled switch valve position is arranged on the position of more than kickoff point (KOP), then carries out normal perforating and fracturing construction; After construction terminates, hydraulic pressure gate-controlled switch valve is closed in pitching, and dragging perforating and fracturing tubing string with pressure, to next section of reservoir position, carries out the perforating and fracturing construction of next section; Treat the complete open flow of whole perforated interval pressing crack construction, through wash well.
This method can be avoided carrying out open flow after every section of perforating and fracturing construction, can save the engineering time, avoid open flow liquid contaminated environment; After reducing perforating and fracturing construction, stratum returning fluid body injures perforating and fracturing tool tubular column, improves instrument efficiency of construction, shortens completion period; Can labor strength be reduced, exempt open flow to the needs expanding well site, need not mud sump be dug, the construction that minimizing material loss or other facilities produce and expense.
Accompanying drawing explanation
Fig. 1 is drag fracturing tubing string schematic diagram with pressure.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
The perforating and fracturing tubing string 3 that this drag fracturing tubing string with pressure is provided with ejector 4 by the hydraulic pressure gate-controlled switch valve 2 connected by oil pipe 1 and upper end forms.
The fracturing process of this drag fracturing tubing string with pressure is as follows:
1, first, by normal for perforating and fracturing tubing string 3 lower going-into-well;
2, according to engineering design, hydraulic pressure gate-controlled switch valve 2 is arranged on the position at more than kickoff point (KOP) O five oil pipe places, kickoff point (KOP) can not be entered down during to guarantee that tubing string is movable, then, oil pipe 1 is connected to Blowout prevention wellhead;
3, connect surface line and carry out first paragraph reservoir perforating and fracturing construction after, pull down oil pipe 1, inject pipeline, install lubricator, drop into steel ball;
4, reconnect oil 1, inject pipeline, suppress, steel ball is coordinated with the ball seat in hydraulic pressure gate-controlled switch valve 2, closing passage, close oil pipe 1;
5, after pressure release, dismounting well head, operation blowout preventer set, shutoff oil jacket annular space, dragging perforating and fracturing tubing string 3 to next section reservoir position with pressure, continues construction.
6, after complete full well reservoir construction, disposable open flow, trips out perforating and fracturing tubing string 3.
Claims (3)
1. a drag fracturing tubing string with pressure, is characterized in that:
The perforating and fracturing tubing string (3) that this drag fracturing tubing string with pressure is provided with ejector (4) by the hydraulic pressure gate-controlled switch valve (2) connected by oil pipe (1) and upper end forms.
2. the fracturing process of a drag fracturing tubing string with pressure, it is characterized in that this method is before carrying out perforating and fracturing construction, by in perforating and fracturing tubing string (3) lower going-into-well, hydraulic pressure gate-controlled switch valve position is arranged on the position of more than kickoff point (KOP), then carries out normal perforating and fracturing construction; After construction terminates, hydraulic pressure gate-controlled switch valve (2) is closed in pitching, and dragging perforating and fracturing tubing string (3) with pressure, to next section of reservoir position, carries out the perforating and fracturing construction of next section; Treat the complete open flow of whole perforated interval pressing crack construction, through wash well.
3. the fracturing process of drag fracturing tubing string with pressure according to claim 2, is characterized in that its concrete operation step is as follows:
1) first, by normal for perforating and fracturing tubing string (3) lower going-into-well;
2) according to engineering design, hydraulic pressure gate-controlled switch valve (2) is arranged on the position at more than kickoff point (KOP) O five oil pipe places, kickoff point (KOP) can not be entered down during to guarantee that tubing string is movable, then, oil pipe 1 is connected to Blowout prevention wellhead;
3) connect surface line and carry out first paragraph reservoir perforating and fracturing construction after, pull down oil pipe (1), inject pipeline, install lubricator, drop into steel ball;
4) reconnect oil (1), inject pipeline, suppress, steel ball is coordinated with the ball seat in hydraulic pressure gate-controlled switch valve 2, closing passage, close oil pipe (1);
5), after pressure release, dismounting well head, operation blowout preventer set, shutoff oil jacket annular space, dragging perforating and fracturing tubing string (3) with pressure, to next section of reservoir position, continues construction.
6), after complete full well reservoir construction, disposable open flow, trips out perforating and fracturing tubing string (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520275.3A CN104563996A (en) | 2013-10-29 | 2013-10-29 | Fracturing tubular column dragged under pressure and fracturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520275.3A CN104563996A (en) | 2013-10-29 | 2013-10-29 | Fracturing tubular column dragged under pressure and fracturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104563996A true CN104563996A (en) | 2015-04-29 |
Family
ID=53080981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310520275.3A Pending CN104563996A (en) | 2013-10-29 | 2013-10-29 | Fracturing tubular column dragged under pressure and fracturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104563996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530512A (en) * | 2020-04-22 | 2021-10-22 | 中国石油天然气股份有限公司 | Fracturing string and fracturing method |
Citations (7)
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|---|---|---|---|---|
| CA2415637A1 (en) * | 2000-07-11 | 2002-01-17 | Halliburton Energy Services, Inc. | Well management system |
| CN200993001Y (en) * | 2006-12-29 | 2007-12-19 | 大港油田集团有限责任公司 | Non-clogging stratified fracturing pipe string and its non-clogging stratified fracturing device |
| US20090008088A1 (en) * | 2007-07-06 | 2009-01-08 | Schultz Roger L | Oscillating Fluid Flow in a Wellbore |
| CN201372806Y (en) * | 2009-01-23 | 2009-12-30 | 毛万里 | Annular hydraulic control multi-switching valve |
| CN102691495A (en) * | 2012-05-18 | 2012-09-26 | 中国石油天然气股份有限公司 | High-broken-pressure stratum horizontal well sectional-fracturing method for well cementation and completion of casing |
| CN102777156A (en) * | 2012-07-20 | 2012-11-14 | 中国石油化工股份有限公司 | Fracturing method for multi-interval oil and gas wells |
| CN103132969A (en) * | 2011-12-05 | 2013-06-05 | 中国石油化工股份有限公司 | Staged fracturing sliding sleeve used for oil well and device and usage method thereof |
-
2013
- 2013-10-29 CN CN201310520275.3A patent/CN104563996A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2415637A1 (en) * | 2000-07-11 | 2002-01-17 | Halliburton Energy Services, Inc. | Well management system |
| CN200993001Y (en) * | 2006-12-29 | 2007-12-19 | 大港油田集团有限责任公司 | Non-clogging stratified fracturing pipe string and its non-clogging stratified fracturing device |
| US20090008088A1 (en) * | 2007-07-06 | 2009-01-08 | Schultz Roger L | Oscillating Fluid Flow in a Wellbore |
| CN201372806Y (en) * | 2009-01-23 | 2009-12-30 | 毛万里 | Annular hydraulic control multi-switching valve |
| CN103132969A (en) * | 2011-12-05 | 2013-06-05 | 中国石油化工股份有限公司 | Staged fracturing sliding sleeve used for oil well and device and usage method thereof |
| CN102691495A (en) * | 2012-05-18 | 2012-09-26 | 中国石油天然气股份有限公司 | High-broken-pressure stratum horizontal well sectional-fracturing method for well cementation and completion of casing |
| CN102777156A (en) * | 2012-07-20 | 2012-11-14 | 中国石油化工股份有限公司 | Fracturing method for multi-interval oil and gas wells |
Non-Patent Citations (3)
| Title |
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| 姜德铭 等: "水力喷射拖动分压工艺在水平井的应用", 《油气井测试》 * |
| 王元基主编: "《水平井油田开发技术文集》", 31 May 2010 * |
| 谢涛等: "工艺危害分析在带压拖动压裂工艺中的应用", 《科技和产业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530512A (en) * | 2020-04-22 | 2021-10-22 | 中国石油天然气股份有限公司 | Fracturing string and fracturing method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |