CN103541683A - Method for leaking stoppage by pre-arranging plugging gel and tightly adding cement paste - Google Patents
Method for leaking stoppage by pre-arranging plugging gel and tightly adding cement paste Download PDFInfo
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- CN103541683A CN103541683A CN201310328193.9A CN201310328193A CN103541683A CN 103541683 A CN103541683 A CN 103541683A CN 201310328193 A CN201310328193 A CN 201310328193A CN 103541683 A CN103541683 A CN 103541683A
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Abstract
The invention relates to the technical field of petroleum drilling engineering leaking stoppage, in particular to a method for leaking stoppage by pre-arranging plugging gel and tightly adding cement paste. The method comprises the following steps that a plugging gel pump is arranged downwards to an underground stratum leak channel, then the cement paste is tightly added to the position of the plugging gel in a well, and the leak channel is plugged after the cement paste is solidified; the plugging gel is obtained by evenly mixing fluid into the well and organoboron cross-linking agents. The plugging process is shown in figure 4 and figure 5. The method is suitable for plugging the leak of wide underground cracks and a karst cave stratum, the plugging gel firstly plugs the entrance of a leak layer, the cement paste is prevented from being leaked into the stratum, then the cement paste is tightly added to carry out plugging, the defect that existing leaking stoppage paste cannot be accumulated at the entrance of the leak layer is avoided, and the leak layer can be reliably plugged.
Description
Technical field
the present invention relates to petroleum drilling engineering leakage stopping technology field, is the method that a kind of preposition leak stopping frozen glue cement paste in hot pursuit carries out leak stopping.
Background technology
leakage problem is the Important Project technical barrier of the domestic and international oil exploration of puzzlement, exploitation always, fails so far to solve completely.The generation of leakage not only can to drilling engineering make troubles and lose (as expend drilling time, loss drilling fluid and loss circulation material, cause the series of complex situations such as bit freezing, blowout, well slough, even cause well to be scrapped), bring very big difficulty also to the exploration and development of petroleum resources.Leakage stopping technology has obtained very large development in recent years, but for compared with the leakage on wide seam and solution cavity stratum, leak stopping slurry can not be piled up near drop ply entrance, cannot rest on entrance and play leak stopping effect, and leak stopping is difficult to successfully.
Summary of the invention
the invention provides a kind of entry well fluid and preposition leak stopping frozen glue and preparation method thereof, overcome the deficiency of above-mentioned prior art, it can effectively solve compared with the leakage leak stopping on wide seam and solution cavity stratum and be difficult to successful problem.
technical scheme of the present invention realizes by following measures: the method that a kind of preposition leak stopping frozen glue cement paste in hot pursuit carries out leak stopping, carry out as follows: first leak stopping frozen glue is pumped into down-hole formation leakage channel place, then in this well, be hot on the trail of cement paste to leak stopping frozen glue place, then cement paste solidifies rear shutoff leakage channel; 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 for being to obtain after the water of 0.25% to 1% thickening agent, 0.1% to 0.5% PH conditioning agent and surplus mixes percetage by weight.
the further optimization and/or improvements to foregoing invention technical scheme below:
above-mentioned cement paste be G level oil well cement and water in mass ratio 1:0.45 to 1:0.6 mix and obtain.
above-mentioned thickening agent is melon glue or modifyed guar gum or polyacrylamide or polyacrylamide derivative or dissaving polymer; Or/and PH conditioning agent is more than one in sodium carbonate, NaOH, potash, potassium hydroxide.
the organic borate cross-linker that the model that the organic borate cross-linker that the model that above-mentioned organic borate cross-linker is produced for long celebrating chemical plant, down-hole is JL-1 or long celebrating chemical plant, down-hole produce is JL-2.
in above-mentioned leak stopping frozen glue, also contain quality percentage composition and be 1% to 35% solid particle, the particle size of solid particle is 1 order to 60 order, and wherein, solid particle is more than one in quartz sand or haydite or walnut shell.
the inventive method is applicable to down-hole compared with the leak stopping of the leakage on wide seam and solution cavity stratum, leak stopping frozen glue first carries out shutoff by drop ply entrance, block water mud is missed in stratum, and then cement paste in hot pursuit carries out shutoff, avoid current leak stopping slurry near drop ply entrance, not pile up, made reliably leak stopping of drop ply.
Accompanying drawing explanation
accompanying drawing 1 is the resistance to shearing curve of leak stopping frozen glue heatproof in the present invention.
accompanying drawing 2 for leak stopping frozen glue in the present invention before effect, the viscosity change curve of mechanism neutralization a period of time.
accompanying drawing 3 is cement paste multiviscosisty empirical curve in the present invention.
accompanying drawing 4 is for being used the front formation leakage schematic diagram of the present invention.
accompanying drawing 5 is hot on the trail of cement paste schematic diagram after using the preposition leak stopping frozen glue of the present invention.
accompanying drawing 6 is that after using the present invention, cement paste solidifies leak stopping success schematic diagram.
accompanying drawing 7 is that after using the present invention, drilling out continues drilling well schematic diagram.
The specific embodiment
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
embodiment 1, the method that this preposition leak stopping frozen glue cement paste in hot pursuit carries out leak stopping is carried out as follows: first leak stopping frozen glue is pumped into down-hole formation leakage channel place, then in this well, be hot on the trail of cement paste to leak stopping frozen glue place, then cement paste solidifies rear shutoff leakage channel; 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 for being to obtain after the water of 0.25% to 1% thickening agent, 0.1% to 0.5% PH conditioning agent and surplus mixes percetage by weight.Process of Leaking Stoppage is shown in Fig. 4 to Fig. 7, existing leak stopping slurry cannot be deposited in compared with wide seam and solution cavity formation leakage passage place, cannot play leak stopping effect, leak stopping is difficult to successfully, and leak stopping frozen glue of the present invention can residual buildup in down-hole compared with wide seam and solution cavity formation leakage passage place, block water mud is to further leakage in stratum, shutoff leakage channel after cement paste solidifies, play good plugging effect, after leak stopping success, drilling out continues drilling well.
embodiment 2, and this preposition leak stopping frozen glue cement paste in hot pursuit carries out the method for leak stopping and carries out as follows: first leak stopping frozen glue is pumped into behind the down-hole of formation leakage, then to cement paste in hot pursuit in this well, the leakage on stratum is carried out to 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 for by percetage by weight being obtaining after the water of 0.25% or 1% thickening agent, 0.1% or 0.5% PH conditioning agent and surplus mixes.
embodiment 3, as above-described embodiment preferably, cement paste 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, added appropriate setting accelerator or retarding agent in cement paste, setting accelerator can shorten the setting time of cement paste, is applicable to shallow well in the past, and retarding agent can extend the setting time of cement paste, is applicable to deep-well.
embodiment 4, as above-described embodiment preferably, thickening agent is melon glue or modifyed guar gum or polyacrylamide or polyacrylamide derivative or dissaving polymer; Or/and PH conditioning agent is more than one in sodium carbonate, NaOH, potash, potassium hydroxide.
embodiment 5, as above-described embodiment preferably, the organic borate cross-linker that the model that the organic borate cross-linker that the model that organic borate cross-linker is produced for long celebrating chemical plant, down-hole is JL-1 or long celebrating chemical plant, down-hole produce is JL-2.
embodiment 6; be with the difference of above-described embodiment, in leak stopping frozen glue, also contain quality percentage composition and be 1% to 35% solid particle, the particle size of solid particle is 1 order to 60 order; wherein, solid particle is more than one in quartz sand or haydite or walnut shell.Solid particle can make leak stopping frozen glue play better residual buildup effect.
above technical characterictic has formed embodiments of the invention, and it has stronger compliance and implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
the performance of the leak stopping frozen glue using in the present invention is measured
according to the leak stopping frozen glue using in the above embodiment of the present invention, be transparence or faint yellow, there is very strong viscoplasticity.
by leak stopping frozen glue, in temperature, be that 90 ℃, shear rate are 170
-
s condition down cut is after 260 minutes, measures the viscosity of leak stopping frozen glue, and its viscosity, in 260mPa.s left and right (as shown in Figure 1), illustrates that leak stopping frozen glue has the resistance to shear property of heatproof, can the entrance of residual buildup in drop ply near.
meanwhile, leak stopping frozen glue has good suspension Portability, can carry a certain proportion of solid particle, strengthens near residual buildup ability drop ply entrance.
leak stopping frozen glue is not before fully acting on, pumping into, tubing string medium viscosity is lower, be easy to infusion, after effect a period of time, the viscosity increase of leak stopping frozen glue has good viscoplasticity, and (leak stopping frozen glue is before effect, the viscosity change curve of mechanism neutralization a period of time as shown in Figure 2), can be as preposition sealing agent residual buildup near the entrance in drop ply, block water mud is missed in stratum, and leak stopping frozen glue has the good heatproof energy of resistance to shear property, simultaneously, leak stopping frozen glue can be swept along the solid particle of different-grain diameter, to play better residual buildup effect.
to measuring according to the multiviscosisty performance of the above embodiment of the present invention method cement paste in hot pursuit, the multiviscosisty performance curve of cement paste as shown in Figure 3; As can be seen from Figure 3, cement paste in hot pursuit, in the situation that not adding setting accelerator and retarding agent, in temperature, be 95 ℃, pressure is under 105MPa condition, from 180min, the viscosity of cement paste starts to rise rapidly, illustrates now, and cement paste in hot pursuit starts to solidify, basically identical with the cement paste setting time of current leak stopping, illustrate that leak stopping frozen glue does not affect the freezing action of cement paste.
Claims (9)
1. a preposition leak stopping frozen glue is hot on the trail of the method that cement paste carries out leak stopping, it is characterized in that carrying out as follows: first leak stopping frozen glue is pumped into down-hole formation leakage channel place, then in this well, be hot on the trail of cement paste to leak stopping frozen glue place, then cement paste solidifies rear shutoff leakage channel; 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 for being to obtain after the water of 0.25% to 1% thickening agent, 0.1% to 0.5% PH conditioning agent and surplus mixes percetage by weight.
2. the method that preposition leak stopping frozen glue according to claim 1 cement paste in hot pursuit carries out leak stopping, it is characterized in that cement paste be G level oil well cement and water in mass ratio 1:0.45 to 1:0.6 mix and obtain.
3. the method that preposition leak stopping frozen glue according to claim 1 and 2 cement paste in hot pursuit carries out leak stopping, is characterized in that thickening agent is melon glue or modifyed guar gum or polyacrylamide or polyacrylamide derivative or dissaving polymer; Or/and PH conditioning agent is more than one in sodium carbonate, NaOH, potash, potassium hydroxide.
4. the method that preposition leak stopping frozen glue according to claim 1 and 2 cement paste in hot pursuit carries out leak stopping, is characterized in that organic borate cross-linker is the organic borate cross-linker that model that model that long celebrating chemical plant, down-hole the produces organic borate cross-linker that is JL-1 or long celebrating chemical plant, down-hole produce is JL-2.
5. the method that preposition leak stopping frozen glue according to claim 3 cement paste in hot pursuit carries out leak stopping, is characterized in that organic borate cross-linker is the organic borate cross-linker that model that model that long celebrating chemical plant, down-hole the produces organic borate cross-linker that is JL-1 or long celebrating chemical plant, down-hole produce is JL-2.
6. the method that preposition leak stopping frozen glue according to claim 1 and 2 cement paste in hot pursuit carries out leak stopping; it is characterized in that also containing in leak stopping frozen glue quality percentage composition and be 1% to 35% solid particle; the particle size of solid particle is 1 order to 60 order; wherein, solid particle is more than one in quartz sand or haydite or walnut shell.
7. preposition leak stopping frozen glue according to claim 3; it is characterized in that also containing in leak stopping frozen glue quality percentage composition and be 1% to 35% solid particle; the particle size of solid particle is 1 order to 60 order, and wherein, solid particle is more than one in quartz sand or haydite or walnut shell.
8. preposition leak stopping frozen glue according to claim 4; it is characterized in that also containing in leak stopping frozen glue quality percentage composition and be 1% to 35% solid particle; the particle size of solid particle is 1 order to 60 order, and wherein, solid particle is more than one in quartz sand or haydite or walnut shell.
9. preposition leak stopping frozen glue according to claim 5; it is characterized in that also containing in leak stopping frozen glue quality percentage composition and be 1% to 35% solid particle; the particle size of solid particle is 1 order to 60 order, and wherein, solid particle is more than one in quartz sand or haydite or walnut 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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| CN103541683A true CN103541683A (en) | 2014-01-29 |
| CN103541683B CN103541683B (en) | 2016-06-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115354987A (en) * | 2022-09-14 | 2022-11-18 | 贵州大学 | Mine water inrush treatment method |
| CN115538972A (en) * | 2022-09-21 | 2022-12-30 | 新疆格瑞迪斯石油技术股份有限公司 | Drilling well plugging method suitable for malignant leakage stratum |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115354987A (en) * | 2022-09-14 | 2022-11-18 | 贵州大学 | Mine water inrush treatment method |
| CN115354987B (en) * | 2022-09-14 | 2024-01-19 | 贵州大学 | Mine water inrush treatment method |
| CN115538972A (en) * | 2022-09-21 | 2022-12-30 | 新疆格瑞迪斯石油技术股份有限公司 | Drilling well plugging method suitable for malignant leakage stratum |
| 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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