CN103013477B - Under-balanced drilling high temperature stiff foam and preparation method thereof - Google Patents
Under-balanced drilling high temperature stiff foam and preparation method thereof Download PDFInfo
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- CN103013477B CN103013477B CN201210400177.1A CN201210400177A CN103013477B CN 103013477 B CN103013477 B CN 103013477B CN 201210400177 A CN201210400177 A CN 201210400177A CN 103013477 B CN103013477 B CN 103013477B
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Abstract
The present invention relates to under-balanced drilling technology field, is a kind of under-balanced drilling high temperature stiff foam and preparation method thereof; This under-balanced drilling high temperature stiff foam: percentage ratio contains slope soil 1% to 3% by weight, composite foamable agent 3% to 6%, suds-stabilizing agent 0.3% to 0.6%, surplus be water.The present invention, by the synergistic function of composite foamable agent and suds-stabilizing agent, has foam densification, temperature resistance, anti-salt, oil resistant ability is strong and foaming properties is stable feature, enhances its prop-carrying capacity, better met wellbore construction requirement.
Description
Technical field
The present invention relates to under-balanced drilling technology field, is a kind of under-balanced drilling high temperature stiff foam and preparation method thereof.
Background technology
Along with the exploratory development of oil-gas field, conventional gas and oil resource is exploited totally gradually, and many explored non-producing reserves are all low pressure and low permeability oil field substantially.Under-balanced drilling has minimizing formation damage, improves rate of penetration, reduces cyclic pressure dissipation, avoids leakage and reduce the advantages such as pressure differential sticking, within nearly 10 years, is greatly developed.Foam drilling is a kind of special shape of under-balanced drilling technology, main fluid is foam, its have density low, to suspend and cutting carring ability is strong, liquid column hydrostatic pressure is low, filter loss is little, friction loss is little, the row's of helping ability is strong, antipollution effect good, to characteristics such as reservoir injury are little, be widely used in low pressure, the drilling well of leakage and water-sensitive strata, completion, well workover and well production increment measure.By the foam underbalanced drilling technique that Appropriate application is supporting, the infringement to oil reservoir can be reduced to greatest extent.
Along with applying of foam underbalanced drilling technology, foam drilling faces stratum high-temperature, bores the problems such as the mixture of crude oil, mineralized water and the crude oil of meeting highly mineralized formation brines or even reservoir, foam system used should have strong latherability in met resident fluid, the froth stability formed is good, can with other chemical agent compatibility of adding in drilling operation.What commonly use in current oil field at home foam underbalanced drilling process is regular foam system, some temperature resistances are good, but run into high salt stratum lather collapse, the anti-salt had, oil pollution performance are good, but temperature resistance is poor, the whipping agent that can meet above-mentioned whole requirement is few, can adapt to the phoenix feathers and unicorn horns especially at home of oily and high bittern water mixed stream.
Summary of the invention
The invention provides a kind of under-balanced drilling high temperature stiff foam and preparation method thereof, overcome the deficiency of above-mentioned prior art, it can effectively solve when boring the deep-well of meeting and containing highly mineralized formation brines or oil-bearing formation, regular foam system because of temperature resistance, anti-salt, oil resistant ability weak, foaming properties decay is serious, thus causes the problem of wellbore construction difficulty.
One of technical scheme of the present invention is realized by following measures: a kind of under-balanced drilling high temperature stiff foam: percentage ratio contains slope soil 1% to 3% by weight, composite foamable agent 3% to 6%, suds-stabilizing agent 0.3% to 0.6%, surplus be water.
Here is the further optimization and/or improvements to one of foregoing invention technical scheme:
Above-mentioned composite foamable agent is one or more the composition in dodecyl isobutyl alcohol radical ether sulfonate, tea saponin, dodecyl sulfate, dodecylbenzene sulfonate.
Above-mentioned dodecyl isobutyl alcohol radical ether sulfonate obtains by following preparation method: the first step: added in reactor by 100 weight part lauryl alcohols and heat to 70 DEG C to 80 DEG C, add 2.0 part by weight of catalyst TBE and 55 weight part methyl epichlorohydrins successively and react 3 h to 4h, after being warming up to 80 DEG C to 90 DEG C; Add by the amount of above-mentioned every 100 weight part lauryl alcohols the NaOH solution that 70ml mass percent concentration is 40%, react 1 h to 2h; Then extracting and separating obtains fatty alcohol epoxy group(ing) ether; Then in fatty alcohol epoxy group(ing) ether, 170ml NaHSO is added by the amount of above-mentioned every 100 weight part lauryl alcohols
3saturated solution, under 130 to 160 DEG C of conditions, confined reaction 1 h to 2h, obtains tawny paste, is dodecyl isobutyl alcohol radical ether sulfonate.
Above-mentioned composite foamable agent is one or more the composition in tea saponin, dodecyl sulfate, dodecylbenzene sulfonate.
Above-mentioned suds-stabilizing agent is one or more the composition in polyacrylamide, carboxymethyl cellulose, biological polymer, organic acid salt polymkeric substance.
Two of technical scheme of the present invention is realized by following measures: a kind of preparation method of above-mentioned under-balanced drilling high temperature stiff foam: carry out in the steps below: the first step: added in the water of requirement by the slope of requirement soil and make rear aging 24 more than the h of slope soil matrix slurry, then suds-stabilizing agent and the composite foamable agent of requirement is pumped into, stir, obtain under-balanced drilling high temperature stiff foam.
The present invention, by the synergistic function of composite foamable agent and suds-stabilizing agent, has foam densification, temperature resistance, anti-salt, oil resistant ability is strong and foaming properties is stable feature, enhances its prop-carrying capacity, better met wellbore construction requirement.
Embodiment
The present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and practical situation.
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1, percentage ratio contains slope soil 1% to 3% to this under-balanced drilling high temperature stiff foam by weight, composite foamable agent 3% to 6%, suds-stabilizing agent 0.3% to 0.6%, surplus be water.
Embodiment 2, percentage ratio contains slope soil 1% to this under-balanced drilling high temperature stiff foam by weight, composite foamable agent 3%, suds-stabilizing agent 0.3%, surplus be water.
Embodiment 3, percentage ratio contains slope soil 3% to this under-balanced drilling high temperature stiff foam by weight, composite foamable agent 6%, suds-stabilizing agent 0.6%, surplus be water.
Embodiment 4, percentage ratio contains slope soil 1% to this under-balanced drilling high temperature stiff foam by weight, composite foamable agent 6%, suds-stabilizing agent 0.3%, surplus be water.
Embodiment 5, percentage ratio contains slope soil 3% to this under-balanced drilling high temperature stiff foam by weight, composite foamable agent 3%, suds-stabilizing agent 0.6%, surplus be water.
Embodiment 6, percentage ratio contains slope soil 2% to this under-balanced drilling high temperature stiff foam by weight, composite foamable agent 4.5%, suds-stabilizing agent 0.45%, surplus be water.
In the above-described embodiments:
Composite foamable agent is one or more the composition in dodecyl isobutyl alcohol radical ether sulfonate, tea saponin, dodecyl sulfate, dodecylbenzene sulfonate.
Dodecyl isobutyl alcohol radical ether sulfonate obtains by following preparation method: the first step: added in reactor by 100 weight part lauryl alcohols and heat to 70 DEG C to 80 DEG C, add 2.0 part by weight of catalyst TBE and 55 weight part methyl epichlorohydrins successively and react 3 h to 4h, after being warming up to 80 DEG C to 90 DEG C; Add by the amount of above-mentioned every 100 weight part lauryl alcohols the NaOH solution that 70ml mass percent concentration is 40%, react 1 h to 2h; Then extracting and separating obtains fatty alcohol epoxy group(ing) ether; Then in fatty alcohol epoxy group(ing) ether, 170ml NaHSO is added by the amount of above-mentioned every 100 weight part lauryl alcohols
3saturated solution, under 130 to 160 DEG C of conditions, confined reaction 1 h to 2h, obtains tawny paste, is dodecyl isobutyl alcohol radical ether sulfonate.
Composite foamable agent is one or more the composition in tea saponin, dodecyl sulfate, dodecylbenzene sulfonate.
Suds-stabilizing agent is one or more the composition in polyacrylamide, carboxymethyl cellulose, biological polymer, organic acid salt polymkeric substance.
Above-described embodiment obtains under-balanced drilling high temperature stiff foam in the steps below: the first step: added in the water of requirement by the slope of requirement soil and make rear aging 24 more than the h of slope soil matrix slurry, then suds-stabilizing agent and the composite foamable agent of requirement is pumped into, stir, obtain under-balanced drilling high temperature stiff foam.
Above-described embodiment gained under-balanced drilling high temperature stiff foam is that the performance perameter average result of 130 DEG C is as shown in table 1 in normal mild temperature.
Table 1
Claims (2)
1. a under-balanced drilling high temperature stiff foam, is characterized in that percentage ratio contains slope soil 1% to 3% by weight, composite foamable agent 3% to 6%, suds-stabilizing agent 0.3% to 0.6%, surplus are water; Wherein: described composite foamable agent is the composition of dodecyl isobutyl alcohol radical ether sulfonate, tea saponin; This under-balanced drilling preparation method of high temperature stiff foam, it is characterized in that carrying out in the steps below: the first step: the slope of requirement soil is added in the water of requirement and makes rear aging 24 more than the h of slope soil matrix slurry, then suds-stabilizing agent and the composite foamable agent of requirement is pumped into, stir, obtain under-balanced drilling high temperature stiff foam; This dodecyl isobutyl alcohol radical ether sulfonate obtains by following preparation method: the first step: added in reactor by 100 weight part lauryl alcohols and heat to 70 DEG C to 80 DEG C, add 2.0 part by weight of catalyst TBE and 55 weight part methyl epichlorohydrins successively and react 3 h to 4h, after being warming up to 80 DEG C to 90 DEG C; Add by the amount of above-mentioned every 100 weight part lauryl alcohols the NaOH solution that 70ml mass percent concentration is 40%, react 1 h to 2h; Then extracting and separating obtains fatty alcohol epoxy group(ing) ether; Then in fatty alcohol epoxy group(ing) ether, 170ml NaHSO is added by the amount of above-mentioned every 100 weight part lauryl alcohols
3saturated solution, under 130 to 160 DEG C of conditions, confined reaction 1 h to 2h, obtains tawny paste, is dodecyl isobutyl alcohol radical ether sulfonate; Suds-stabilizing agent is one or more the composition in polyacrylamide, carboxymethyl cellulose, biological polymer, organic acid salt polymkeric substance.
2. the preparation method of a under-balanced drilling high temperature stiff foam according to claim 1, it is characterized in that carrying out in the steps below: the first step: the slope of requirement soil is added in the water of requirement and makes rear aging 24 more than the h of slope soil matrix slurry, then suds-stabilizing agent and the composite foamable agent of requirement is pumped into, stir, obtain under-balanced drilling high temperature stiff foam.
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| CN201210400177.1A CN103013477B (en) | 2012-10-20 | 2012-10-20 | Under-balanced drilling high temperature stiff foam and preparation method thereof |
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| CN103013477B true CN103013477B (en) | 2015-08-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104046342B (en) * | 2014-05-30 | 2017-06-30 | 中国石油化工集团公司 | A kind of high temperature resistance Solid Free micro-foam drilling fluid or completion fluid |
| CN104893695B (en) * | 2015-05-25 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of deep layer low pressure Oil/gas Well low density foam workover fluid and its compound method |
| CN106519432A (en) * | 2016-10-31 | 2017-03-22 | 江苏昊晟塑业科技有限公司 | Foaming material for inflaming retarding of automobile interior panel |
| CN108690587A (en) * | 2018-05-21 | 2018-10-23 | 北京力会澜博能源技术有限公司 | The capsule suede agent of natural gas well suede bag pressure well liquid |
| CN109294535B (en) * | 2018-11-16 | 2021-02-23 | 中联煤层气有限责任公司 | Preparation method and preparation equipment of foam drilling fluid for three-gas open-hole exploitation |
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| US7351680B2 (en) * | 2001-09-19 | 2008-04-01 | Hayes James R | High performance water-based mud system |
| CN101613595B (en) * | 2009-07-28 | 2012-05-16 | 大庆石油管理局 | Micro-foam drilling fluid |
| CN102559157A (en) * | 2011-12-09 | 2012-07-11 | 中国石油大学(华东) | Environmentally-friendly high-temperature-resistant synthetic base foam drilling fluid and preparation method thereof |
| CN102660251A (en) * | 2012-04-25 | 2012-09-12 | 中国石油化工股份有限公司 | Temperature-resistant salt-tolerant foaming agent carbon dioxide flooding profile control and preparation method thereof |
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- 2012-10-20 CN CN201210400177.1A patent/CN103013477B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7351680B2 (en) * | 2001-09-19 | 2008-04-01 | Hayes James R | High performance water-based mud system |
| CN101613595B (en) * | 2009-07-28 | 2012-05-16 | 大庆石油管理局 | Micro-foam drilling fluid |
| CN102559157A (en) * | 2011-12-09 | 2012-07-11 | 中国石油大学(华东) | Environmentally-friendly high-temperature-resistant synthetic base foam drilling fluid and preparation method thereof |
| CN102660251A (en) * | 2012-04-25 | 2012-09-12 | 中国石油化工股份有限公司 | Temperature-resistant salt-tolerant foaming agent carbon dioxide flooding profile control and preparation method thereof |
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Address after: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 Western Drilling Engineering Technology Research Institute of science and technology management department Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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Effective date of registration: 20201106 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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