CN103541683B - Preposition leak stopping frozen glue grout in hot pursuit carries out the method for leak stopping - Google Patents
Preposition leak stopping frozen glue grout in hot pursuit carries out the method for leak stopping Download PDFInfo
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- CN103541683B CN103541683B CN201310328193.9A CN201310328193A CN103541683B CN 103541683 B CN103541683 B CN 103541683B CN 201310328193 A CN201310328193 A CN 201310328193A CN 103541683 B CN103541683 B CN 103541683B
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Abstract
<b>the present invention relates to petroleum drilling engineering leakage stopping technology field, it it is the method that a kind of preposition leak stopping frozen glue grout in hot pursuit carries out leak stopping, the method carries out as follows: leak stopping frozen glue is first pumped into down-hole formation leakage channel place, then in this well, grout it is hot on the trail of to leak stopping frozen glue place, then shutoff leakage channel after grout cures;</b><b>wherein, leak stopping frozen glue obtains for entry well fluid and organic borate cross-linker being mixed. Leak stopping process is shown in Fig. 4 to Fig. 5. The inventive method is applicable to down-hole compared with the leak stopping of wide seam and the leakage on solution cavity stratum, leakage layer ingress is first carried out shutoff by leak stopping frozen glue, block water mud is missed in stratum, and then grout in hot pursuit carries out shutoff, avoid current leak stopping slurry to pile up at leakage layer entrance so that leakage layer can reliably leak stopping.</b>
Description
Technical field
The present invention relates to petroleum drilling engineering leakage stopping technology field, it is the method that a kind of preposition leak stopping frozen glue grout in hot pursuit carries out leak stopping.
Background technology
Leakage problem is the major engineering problems of the domestic and international petroleum prospecting of puzzlement, exploitation always, fails so far to solve completely. The generation of leakage not only can make troubles to drilling engineering and lose (as expend rig time, loss drilling fluid and patching materials, cause a series of complexcase such as bit freezing, blowout, well slough, well is even caused to be scrapped), bring very big difficulty also to the exploratory development of hydrocarbon resources. Leakage stopping technology obtains very big development in recent years, but for the leakage of relatively wide seam and solution cavity stratum, leak stopping slurry can not be piled up at leakage layer entrance, cannot stop leak stopping effect of playing in ingress, and leak stopping is difficult to successfully.
Summary of the invention
The present invention provides a kind of entry well fluid and preposition leak stopping frozen glue and its preparation method, overcomes the deficiency of above-mentioned prior art, and its leakage leak stopping that can effectively solve relatively wide seam and solution cavity stratum is difficult to successful problem.
The technical scheme of the present invention is realized by following measure: a kind of preposition leak stopping frozen glue grout in hot pursuit carries out the method for leak stopping, carry out as follows: first leak stopping frozen glue is pumped into down-hole formation leakage channel place, then in this well, grout it is hot on the trail of to leak stopping frozen glue place, then shutoff leakage channel after grout cures; Wherein, leak stopping frozen glue for by entry well fluid and organic borate cross-linker by volume 100:0.1 to 100:1 mix and obtain, entry well fluid is obtain after being mixed by the water that weight percentage is the viscosifying agent of 0.25% to 1%, the PH conditioning agent of 0.1% to 0.5% and surplus.
Here is the further optimization and/or improvements to foregoing invention technical scheme:
Above-mentioned grout be G level oil well cement and water in mass ratio 1:0.45 to 1:0.6 mix and obtain.
Above-mentioned viscosifying agent is melon glue or modifyed guar gum or polyacrylamide or polyacrylamide derivative or hyperbranched polymer; Or/and, PH conditioning agent is more than one in sodium carbonate, sodium hydroxide, salt of wormwood, potassium hydroxide.
The model that the organic borate cross-linker of above-mentioned organic borate cross-linker to be the model that long celebrating chemical plant, down-hole produces be JL-1 or long celebrating chemical plant, down-hole produce is the organic borate cross-linker of JL-2.
Being also the solid particulate of 1% to 35% containing mass percentage in above-mentioned leak stopping frozen glue, the size of solid particulate is 1 order to 60 order, and wherein, solid particulate is more than one in quartz sand or haydite or nut-shell.
The inventive method is applicable to down-hole compared with the leak stopping of wide seam and the leakage on solution cavity stratum, leakage layer ingress is first carried out shutoff by leak stopping frozen glue, block water mud is missed in stratum, and then grout in hot pursuit carries out shutoff, avoid current leak stopping slurry to pile up at leakage layer entrance so that leakage layer can reliably leak stopping.
Accompanying drawing explanation
Accompanying drawing 1 is leak stopping frozen glue heatproof resistant to shearing curve in the present invention.
Accompanying drawing 2 be in the present invention leak stopping frozen glue before effect, the viscosity B coefficent curve of mechanism neutralizing effect for some time.
Accompanying drawing 3 is grout multiviscosisty empirical curve in the present invention.
Accompanying drawing 4 is formation leakage schematic diagram before use the present invention.
Accompanying drawing 5 is hot on the trail of grout schematic diagram after using the preposition leak stopping frozen glue of the present invention.
Accompanying drawing 6 is cement slurry sets leak stopping success schematic diagram after use the present invention.
Accompanying drawing 7 is drilling out continuation drilling well schematic diagram after use the present invention.
Embodiment
The present invention by the restriction of following embodiment, can not determine concrete enforcement mode according to the technical scheme of the present invention and practical situation.
Embodiment 1, the method that this preposition leak stopping frozen glue grout in hot pursuit carries out leak stopping carries out as follows: leak stopping frozen glue is first pumped into down-hole formation leakage channel place, then in this well, grout it is hot on the trail of to leak stopping frozen glue place, then shutoff leakage channel after grout cures; Wherein, leak stopping frozen glue for by entry well fluid and organic borate cross-linker by volume 100:0.1 to 100:1 mix and obtain, entry well fluid is obtain after being mixed by the water that weight percentage is the viscosifying agent of 0.25% to 1%, the PH conditioning agent of 0.1% to 0.5% and surplus. Leak stopping process is shown in Fig. 4 to Fig. 7, existing leak stopping slurry cannot be deposited in relatively wide seam and solution cavity formation leakage passage place, leak stopping effect cannot be played, leak stopping is difficult to successfully, and leak stopping frozen glue of the present invention can residual buildup in down-hole relatively wide seam and solution cavity formation leakage passage place, block water mud is missed further in stratum, shutoff leakage channel after grout cures, playing good plugging effect, after leak stopping success, drilling out continues drilling well.
Embodiment 2, the method that this preposition leak stopping frozen glue grout in hot pursuit carries out leak stopping carries out as follows: after leak stopping frozen glue pump first enters to have the down-hole of formation leakage, and then in this well, the leakage of grout formation in hot pursuit carries out shutoff; Wherein, leak stopping frozen glue for by entry well fluid and organic borate cross-linker by volume 100:0.1 or 100:1 mix and obtain, entry well fluid is obtaining after being mixed by the water that weight percentage is the viscosifying agent of 0.25% or 1%, the PH conditioning agent of 0.1% or 0.5% and surplus.
Embodiment 3, preferred as above-described embodiment, grout be G level oil well cement and water in mass ratio 1:0.45 to 1:0.6 mix and obtain. Wherein, according to different operating mode needs, it is possible to adding appropriate setting accelerator or retardant in grout, setting accelerator can shorten the setting time of grout, is applicable to shallow well, and retardant can extend the setting time of grout, is applicable to deep-well.
Embodiment 4, preferred as above-described embodiment, viscosifying agent is melon glue or modifyed guar gum or polyacrylamide or polyacrylamide derivative or hyperbranched polymer; Or/and, PH conditioning agent is more than one in sodium carbonate, sodium hydroxide, salt of wormwood, potassium hydroxide.
Embodiment 5, preferred as above-described embodiment, the model that the organic borate cross-linker of organic borate cross-linker to be the model that long celebrating chemical plant, down-hole produces be JL-1 or long celebrating chemical plant, down-hole produce is the organic borate cross-linker of JL-2.
Embodiment 6; being with the difference of above-described embodiment, also containing mass percentage in leak stopping frozen glue is the solid particulate of 1% to 35%, and the size of solid particulate is 1 order to 60 order; wherein, solid particulate is more than one in quartz sand or haydite or nut-shell. Solid particulate can make leak stopping frozen glue play better residual buildup effect.
Above technology structural feature embodiments of the invention, it has stronger adaptability and implementation result, can increase and decrease the technology feature of non-necessity according to actual needs, meet the demand of different situations.
, the performance of the leak stopping frozen glue used in the present invention is measured
According to the transparent shape of leak stopping frozen glue used in the above embodiment of the present invention or faint yellow, there is very strong visco-elasticity.
By leak stopping frozen glue temperature be 90 DEG C, shearing rate be 170
-
S condition down cut, after 260 minutes, measures the viscosity of leak stopping frozen glue, and its viscosity, at about 260mPa.s (as shown in Figure 1), illustrates that leak stopping frozen glue has heatproof resistant to shearing characteristic, it is possible to the entrance of residual buildup in leakage layer.
Meanwhile, leak stopping frozen glue has the Portability that well suspends, it is possible to carry a certain proportion of solid particulate, strengthens the residual buildup ability at leakage layer entrance.
Leak stopping frozen glue is not before fully acting on, viscosity in tubing string is entered lower at pump, it is easy to infusion, when after effect for some time, the viscosity increase of leak stopping frozen glue has good visco-elasticity, and (leak stopping frozen glue is before effect, the viscosity B coefficent curve of mechanism neutralizing effect for some time is as shown in Figure 2), can as the entrance of preposition plugging agent residual buildup in leakage layer, block water mud is missed in stratum, and leak stopping frozen glue has good heatproof resistant to shearing characteristic energy, simultaneously, leak stopping frozen glue can sweep along the solid particulate of different-grain diameter, to play better residual buildup effect.
, the multiviscosisty performance of the grout in hot pursuit according to the above embodiment of the present invention method is measured, the multiviscosisty performance curve of grout is as shown in Figure 3; As can be seen from Figure 3, grout in hot pursuit, when not adding setting accelerator and retardant, it is 95 DEG C in temperature, when pressure is 105MPa, from 180min, the viscosity of grout starts to rise rapidly, illustrates now, and grout in hot pursuit starts to solidify, basically identical with the cement slurry sets time of current leak stopping, illustrate that leak stopping frozen glue does not affect the solidification of grout.
Claims (1)
1. the method that grout carries out leak stopping is hot on the trail of by a preposition leak stopping frozen glue, it is characterized in that carrying out as follows: leak stopping frozen glue is first pumped into down-hole formation leakage channel place, then in this well, grout it is hot on the trail of to leak stopping frozen glue place, then shutoff leakage channel after grout cures; Wherein, leak stopping frozen glue for by entry well fluid and organic borate cross-linker by volume 100:0.1 to 100:1 mix and obtain, entry well fluid is obtain after being mixed by the water that weight percentage is the viscosifying agent of 0.25% to 1%, the pH adjusting agent of 0.1% to 0.5% and surplus; Grout be G level oil well cement and water in mass ratio 1:0.45 to 1:0.6 mix and obtain; Viscosifying agent is melon glue or modifyed guar gum or polyacrylamide or polyacrylamide derivative or hyperbranched polymer; PH adjusting agent is more than one in sodium carbonate, sodium hydroxide, salt of wormwood, potassium hydroxide; The model that the organic borate cross-linker of organic borate cross-linker to be the model that long celebrating chemical plant, down-hole produces be JL-1 or long celebrating chemical plant, down-hole produce is the organic borate cross-linker of JL-2; Being also the solid particulate of 1% to 35% containing mass percentage in leak stopping frozen glue, the size of solid particulate is 1 order to 60 order, and solid particulate is more than one in quartz sand or haydite or nut-shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310328193.9A CN103541683B (en) | 2013-07-31 | 2013-07-31 | Preposition leak stopping frozen glue grout in hot pursuit carries out the method for leak stopping |
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| CN201310328193.9A CN103541683B (en) | 2013-07-31 | 2013-07-31 | Preposition leak stopping frozen glue grout in hot pursuit carries out the method for leak stopping |
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| CN103541683B true CN103541683B (en) | 2016-06-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111410477A (en) * | 2020-03-27 | 2020-07-14 | 甘肃省建材科研设计院有限责任公司 | Plugging material and preparation method thereof |
| CN112724947A (en) * | 2020-12-18 | 2021-04-30 | 长江大学 | High-temperature-resistant high-strength jelly material and application thereof |
| CN115354987B (en) * | 2022-09-14 | 2024-01-19 | 贵州大学 | Mine water inrush treatment method |
| CN115538972B (en) * | 2022-09-21 | 2023-08-29 | 新疆格瑞迪斯石油技术股份有限公司 | Drilling plugging method suitable for malignant leakage stratum |
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| US5229019A (en) * | 1986-02-24 | 1993-07-20 | Forrest Gabriel T | Low fluid leakoff cementing compositions and filtration control additive for cement |
| US5484020A (en) * | 1994-04-25 | 1996-01-16 | Shell Oil Company | Remedial wellbore sealing with unsaturated monomer system |
| CN1257465A (en) * | 1997-04-14 | 2000-06-21 | 哈利伯顿能源服务公司 | Cementitious compositions and methods for use in subterranean wells |
| CN1558983A (en) * | 2001-08-02 | 2004-12-29 | ̩ | Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone |
| CN101135237A (en) * | 2007-10-17 | 2008-03-05 | 吐哈石油勘探开发指挥部工程技术研究院 | Method for preparing down-hole gel valve and construction method thereof |
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