CN103422823A - Cleaning fiber and method for using cleaning fiber for cleaning well - Google Patents
Cleaning fiber and method for using cleaning fiber for cleaning well Download PDFInfo
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- CN103422823A CN103422823A CN2012101551708A CN201210155170A CN103422823A CN 103422823 A CN103422823 A CN 103422823A CN 2012101551708 A CN2012101551708 A CN 2012101551708A CN 201210155170 A CN201210155170 A CN 201210155170A CN 103422823 A CN103422823 A CN 103422823A
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Abstract
The invention relates to a cleaning fiber and a method for using the cleaning fiber for cleaning a well and belongs to the technical field of cleaning a wellhole of a petroleum drilled well. The cleaning fiber is made of raw single fiber polypropylene, in the shape of a long thread and has the length ranging from 12mm to 13mm and the diameter of 21micrometers. The cleaning fiber is made of the raw single fiber polypropylene and has the features of being resistant to heat, high in strength and dispersion, sluggish and the like. The cleaning fiber is made into short fibers which are 12mm to 13mm long and have the diameter of 21micrometers. The short fibers are added into drilling liquid and do not change the property of the drilling liquid. The cleaning fibers in the blended fiber cleaning thick liquid can improve the cutting-carrying capacity of the drilling liquid in a multiplied mode and the well cleaning efficiency is greatly higher than that of regular pure drilling liquid for cleaning.
Description
Technical field
The present invention relates to oil drilling well clean technologies field, espespecially a kind of clean fiber and use the method for this fiber well-flushing.
Background technology
In the wellbore construction operation, affected by the factors such as casing programme, property of drilling fluid, strata condition, drilling parameter, exist well to clean a difficult problem, the following technology of the clean employing of conventional well:
(1) OPTIMIZATION OF DRILLING FLUID performance, improve the drilling fluid well and clean and large rock-carrying ability;
(2) large discharge capacity segmentation circulation, reaming in time;
(3) thick slurry replaces, sealing slurry packing part well section.
Conventional processes OPTIMIZATION OF DRILLING FLUID performance need treated drilling fluid, change property of drilling fluid, process time-consuming, when improving operating cost due to the unstable of property of drilling fluid and large discharge capacity circulation well cleanup the time, bring the complicated risk such as collapse to down-hole again.
Summary of the invention
The object of the present invention is to provide a kind of clean fiber and use the method for this fiber well-flushing, this clean fiber is high temperature resistant, intensity is high, and adding this clean fiber can not change property of drilling fluid, to significantly improve large rock-carrying ability, the well washing effect of drilling fluid simultaneously good.
To achieve these goals, technical solution of the present invention is: a kind of clean fiber, and wherein this clean fiber is made by primary monofilament polypropylene material, and described clean fiber is the long filament shape, and its length is the 12-13 millimeter, and diameter is 21 microns.
A kind of method of using the clean fiber well-flushing, it comprises the steps:.
(1) insert the drilling fluid of 15-30 cubic meter in upper water pot, if the borehole status more complicated can be added the drilling fluid of 5-10 cubic meter;
(2), according to adding described clean fiber 1.0-1.2KG to be mixed in every cubic metre of drilling fluid, total joining day is controlled at 30 minutes;
(3) by mixed drilling fluid and clean fiber stir about 2 hours, it is stand-by that the fiber after stirring cleans slurry;
(4) fiber according to normal discharge capacity, step (2) prepared cleans slurry and pumps into drill string by pump, drill string rotarily drives drill bit the pressure of the drill wedging stratum under the effect of rotating disk, realize catalase under turning effort, the drilling cuttings that fragmentation produces cleans the slurry circulation by fiber and is discharged outside well by the annular space between drill string and the borehole wall;
(5) circulation above-mentioned steps (4) is until clean slurry with all fibres of drilling cuttings and discharge, and afterwards drilling cuttings and clean fiber discharged to well-flushing fully through bolting and finishes.
After adopting such scheme, the clean fiber that the present invention is made by primary monofilament polypropylene material has high temperature resistant, the characteristics such as intensity is high, high dispersive, inertia, it is the 12-13 millimeter that this clean fiber is made to length, the short fiber that diameter is 21 microns, by these short fibers are added in drilling fluid, it can not change property of drilling fluid, clean fiber in mixed fiber cleaning slurry can significantly improve the large rock-carrying ability of drilling fluid, and its well-flushing efficiency is much higher than the conventional drilling fluid well washing effect of only using.
The accompanying drawing explanation
Fig. 1 is the structural representation of clean fiber of the present invention;
Fig. 2 is the structural representation that the present invention uses the clean fiber washing well process.
The specific embodiment
As shown in Figure 1, this 1 is made clean fiber of the present invention by primary monofilament polypropylene material, and this clean fiber 1 is the long filament shape, and its length is the 12-13 millimeter, and diameter is 21 microns, this clean fiber 1 and all water base, oil bases and other drilling fluid system compatibility.
Be the method for using the clean fiber well-flushing as shown in Figure 2, it comprises the steps:.
(1) insert the drilling fluid of 15-30 cubic meter in upper water pot, if the borehole status more complicated can be added the drilling fluid of 5-10 cubic meter;
(2), according to adding the described clean fiber 1 of 1.0-1.2KG to be mixed in every cubic metre of drilling fluid, total joining day is controlled at 30 minutes;
(3) by mixed drilling fluid and clean fiber 1 stir about 2 hours, it is stand-by that the fiber after stirring cleans slurry;
(4) fiber according to normal discharge capacity, step (2) prepared cleans slurry and pumps into drill string 2 by pump, drill string 2 rotarily drives drill bit the pressure of the drill wedging stratum under the effect of rotating disk, realize catalase under turning effort, the drilling cuttings 3 that fragmentation produces cleans the slurry circulation by fiber and is discharged outside well by the annular space between drill string 2 and the borehole wall 4;
(5) circulation above-mentioned steps (4) is until all fibres cleans the slurry discharge, and drilling cuttings 3 and clean fiber 1 are discharged well-flushing fully through vibrosieve and finished.
It in table 1, is the suspending power experimental data table of clean fiber drilling fluid
Table 1 fiber cleans the suspending power of slurry
| Project | Index |
| Pure water+0.4% (mass percent) fiber cleans slurry | The following solid steel ball of diameter 4mm can suspend. |
| Pure water+0.6% (mass percent) fiber cleans slurry | The following solid steel ball of diameter 5mm can suspend. |
| Pure water+0.8% (mass percent) fiber cleans slurry | The following solid steel ball of diameter 6mm can suspend. |
Clean fiber of the present invention has the following advantages for well-flushing the time:
(1) polymolecularity: per kilogram clean fiber 1 accumulative total contains the fiber that surpasses 3000 kilometers length, and the fiber of high dispersive can effectively be caught drilling cuttings, and a small amount of addition can increase exponentially large rock-carrying ability;
(2) uphang buoyancy: the clean fiber 1 of high dispersive, there is the higher suspension performance, in Table 1, it can suspend and carry sand, gravel, landwaste, even milling metal fragment, drill teeth;
(3) safety and environmental protection: environment and soil are not polluted, nontoxic, corrosion-free, can directly with drilling cuttings, discharge, to environment without any pollution;
(4) do not affect viscosity and the shear force of drilling fluid after this clean fiber 1 and drilling fluid mixed;
(5) this clean fiber 1 adaptive temperature is extensive, and 167 degree Celsius are following stable, almost applicable to full well section;
(6) this clean fiber 1 is fast with drilling fluid preparation speed, simple, very convenient to timely processing down-hole complexity;
(7) use this clean fiber 1 not change property of drilling fluid;
(8) can solve the well cleaning problems adding of a small amount of, comprehensive cost is low.
The above embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (2)
1. a clean fiber, it is characterized in that: this clean fiber is made by primary monofilament polypropylene material, and described clean fiber is the long filament shape, and its length is the 12-13 millimeter, and diameter is 21 microns.
2. a right to use requires the method for 1 described clean fiber well-flushing, it is characterized in that: comprise the steps:.
(1) insert the drilling fluid of 15-30 cubic meter in upper water pot, if the borehole status more complicated can be added the drilling fluid of 5-10 cubic meter;
(2), according to adding described clean fiber 1.0-1.2KG to be mixed in every cubic metre of drilling fluid, total joining day is controlled at 30 minutes;
(3) by mixed drilling fluid and clean fiber stir about 2 hours, it is stand-by that the fiber after stirring cleans slurry;
(4) fiber according to normal discharge capacity, step (2) prepared cleans slurry and pumps into drill string by pump, drill string rotarily drives drill bit the pressure of the drill wedging stratum under the effect of rotating disk, realize catalase under turning effort, the drilling cuttings that fragmentation produces cleans the slurry circulation by fiber and is discharged outside well by the annular space between drill string and the borehole wall;
(5) circulation above-mentioned steps (4) is until clean slurry with all fibres of drilling cuttings and discharge, and afterwards drilling cuttings and clean fiber discharged to well-flushing fully through bolting and finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101551708A CN103422823A (en) | 2012-05-18 | 2012-05-18 | Cleaning fiber and method for using cleaning fiber for cleaning well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101551708A CN103422823A (en) | 2012-05-18 | 2012-05-18 | Cleaning fiber and method for using cleaning fiber for cleaning well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103422823A true CN103422823A (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101551708A Pending CN103422823A (en) | 2012-05-18 | 2012-05-18 | Cleaning fiber and method for using cleaning fiber for cleaning well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549439A (en) * | 2021-06-30 | 2021-10-26 | 中国石油大学(北京) | Nano emulsion and preparation method thereof, cleaning fluid composition, underground high-density cleaning fluid and preparation method and application thereof |
| CN114622844A (en) * | 2021-12-16 | 2022-06-14 | 中国石油天然气集团有限公司 | Drilling rock-carrying sand cleaning fluid, preparation method thereof and well cleaning method |
Citations (8)
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|---|---|---|---|---|
| CN1059180A (en) * | 1991-04-13 | 1992-03-04 | 中国石油天然气总公司江汉机械研究所 | Solidification control system for well drilling liguid |
| US6016872A (en) * | 1997-03-17 | 2000-01-25 | Forta Corporation | Method for removing debris from a well-bore |
| CN101089116A (en) * | 2007-07-11 | 2007-12-19 | 中国石油大学(华东) | Adaptive leak preventing and stopping agent for drilling fluid |
| CN101250398A (en) * | 2008-03-25 | 2008-08-27 | 施晓红 | Well drilling leak-proof sealing agent |
| US20090321142A1 (en) * | 2008-06-25 | 2009-12-31 | Brian Dempsey | Well Drilling Method for Prevention of Lost Circulation of Drilling Muds |
| CN101955762A (en) * | 2009-07-17 | 2011-01-26 | 中国石油大学(北京) | Well-drilling completion fluid composition for reservoir protection of petroleum engineering and preparation method thereof |
| US20120322695A1 (en) * | 2009-12-24 | 2012-12-20 | Schlumberger Technology Corporation | Methods for Controlling Lost Circulation in A Subterranean Well and Materials There for |
| CN203128702U (en) * | 2013-03-19 | 2013-08-14 | 北京格瑞迪斯石油技术有限公司 | Cleaning fiber |
-
2012
- 2012-05-18 CN CN2012101551708A patent/CN103422823A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059180A (en) * | 1991-04-13 | 1992-03-04 | 中国石油天然气总公司江汉机械研究所 | Solidification control system for well drilling liguid |
| US6016872A (en) * | 1997-03-17 | 2000-01-25 | Forta Corporation | Method for removing debris from a well-bore |
| CN101089116A (en) * | 2007-07-11 | 2007-12-19 | 中国石油大学(华东) | Adaptive leak preventing and stopping agent for drilling fluid |
| CN101250398A (en) * | 2008-03-25 | 2008-08-27 | 施晓红 | Well drilling leak-proof sealing agent |
| US20090321142A1 (en) * | 2008-06-25 | 2009-12-31 | Brian Dempsey | Well Drilling Method for Prevention of Lost Circulation of Drilling Muds |
| CN101955762A (en) * | 2009-07-17 | 2011-01-26 | 中国石油大学(北京) | Well-drilling completion fluid composition for reservoir protection of petroleum engineering and preparation method thereof |
| US20120322695A1 (en) * | 2009-12-24 | 2012-12-20 | Schlumberger Technology Corporation | Methods for Controlling Lost Circulation in A Subterranean Well and Materials There for |
| CN203128702U (en) * | 2013-03-19 | 2013-08-14 | 北京格瑞迪斯石油技术有限公司 | Cleaning fiber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113549439A (en) * | 2021-06-30 | 2021-10-26 | 中国石油大学(北京) | Nano emulsion and preparation method thereof, cleaning fluid composition, underground high-density cleaning fluid and preparation method and application thereof |
| CN114622844A (en) * | 2021-12-16 | 2022-06-14 | 中国石油天然气集团有限公司 | Drilling rock-carrying sand cleaning fluid, preparation method thereof and well cleaning method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Zhigang Inventor before: He Zhigang Inventor before: Liu Jianhua Inventor before: Lao Chunyu Inventor before: Wen Anren |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HE ZHIGANG LIU JIANHUA LAO CHUNYU WEN ANREN TO: HE ZHIGANG |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131204 |