英文论文答辩摘要

这篇也许行吧：High-strength low-density oil field oil well cement mainly low, low permeability, easy loss cementing strata appear in the issue of lost circulation. In the low-voltage, low-permeability, easy loss stratigraphic drilling, cementing, logging and other underground work, the working fluid leakage under the pressure into the formation of the phenomenon of lost circulation. The use of high-strength low-density cement cementing oil wells can be effectively solved by cementing in the high pressure column of cement slurry, water slurry infiltration of oil, of oil pollution. At home and abroad for high-strength low-density study of oil well cement slurry system more and more concentrated in the admixture of materials and reduce the overall performance on the research, the main strength of the cement produced study material is rarely found in the literature. In this paper, Hailaer Daqing region of low pressure, low permeability, easy loss of formation, to carry out high-strength low-density study of oil well cement and cement matrix evaluate performance. Daqing Oilfield Cementing papers in accordance with the needs of the existing home and abroad in the study of high-strength low-density oil well cement slurry system, based on an increase of research on the cement matrix, high-strength low-density properties of oil well cement aging research, so that the cement mixture from the oilfield site Cementing to mix cement manufacturer by professional production possible. Research papers in the temperature of 45 ℃ conditions, low pressure, low permeability, easy loss cementing formation of high-strength low-density required for the preparation of oil well cement program, the use of closest packing theory, the nucleation theory techniques to study the cement matrix, reduce the material, the cement admixture of the three aspects of high-strength low-density properties of oil well cement, indoor study of the system. The results show that the study of cement matrix and reduce the materials and additives to optimize the preparation of high-strength low-density cement to meet the Daqing oil region Hailaer cementing requirements. The cement slurry prepared with a high early strength, suitable for thickening time, rheological properties and flow of good, good stability of cement slurry characteristics of the settlement to meet the needs of formation cementing. The cement blocks in the Daqing oil field cementing Hailaer more than 230 mouth, cementing quality. Key words: oil well cement base cement compressive strength of low-temperature rheological properties of low-density 。

The excel in low density oil-well cement main solution oil field low pressure, the low seepage, easy to leak the lost circulation question which in the stratum well cementation appears. In the low pressure, the low seepage, easy to leak the stratum well drilling, the well cementation, the oil well logging and so on each kind of downhole operation, the driving fluid leaks into under the differential pressure function to the stratum phenomenon is a lost circulation. Because uses the excel in low density oil-well cement well cementation to be possible to solve in the well cementation the cement mortar head to be excessively high effectively, the cement mortar permeating oil layer, the pollution which creates to the oil layer. domestic and foreign are many to the excel in low density oil well cement mortar system research, concentrates, in the admixture and reduces the overall performance research which on the material carries on, to mainly has the compressive strength cement parent metal research to be very actually rare in the literature. This article in view of Daqing Hairlar area low pressure, the low seepage, easy to leak the stratum, the development excel in low density oil-well cement parent metal research and the cement performance evaluation. the paper according to the Daqing Oil Field well cementation need, in studies in the domestic and foreign existing excel in low density oil well cement mortar system foundation, increased to the cement parent metal research, the excel in low density oil-well cement aging performance study, causes this cement to mix from the oil field scene mixes the well cementation to transfer by the specialized cement Manufacturer carries on possibly produces into. the paper has studied in the temperature for 45℃ the condition, the low pressure, the low seepage, easy to leak the excel in low density oil-well cement configuration plan which the stratum well cementation needs, use close technologies and so on stack theory, nucleus theory, inspected the cement parent metal, to reduce the material, the cement admixture three aspects to the excel in low density oil-well cement performance influence, conducted the indoor research to this system. the findings indicated that through to the cement parent metal research as well as to reduces the material and the admixture carries on the optimization, compounds the excel in low density oil-well cement can satisfy Daqing Hairlar area well cementation request. This cement configuration's cement mortar has the early strength high, thick time being suitable, the mobility and the changing performance is good, the cement mortar subsidence stability good characteristic, can meet the stratum well cementation needs. This cement in the Daqing Hairlar oil field sub-area well cementation more than 230 mouths, the well cementation quality is qualified. key word: Oil-well cement cement parent metal low temperature low density compressive strength changing performance

High-strength low-density oil field oil well cement mainly low, low permeability, easy loss cementing strata appear in the issue of lost circulation. In the low-voltage, low-permeability, easy loss stratigraphic drilling, cementing, logging and other underground work, the working fluid leakage under the pressure into the formation of the phenomenon of lost circulation. The use of high-strength low-density cement cementing oil wells can be effectively solved by cementing in the high pressure column of cement slurry, water slurry infiltration of oil, of oil pollution. At home and abroad for high-strength low-density study of oil well cement slurry system more and more concentrated in the admixture of materials and reduce the overall performance on the research, the main strength of the cement produced study material is rarely found in the literature. In this paper, Hailaer Daqing region of low pressure, low permeability, easy loss of formation, to carry out high-strength low-density study of oil well cement and cement matrix evaluate performance. Daqing Oilfield Cementing papers in accordance with the needs of the existing home and abroad in the study of high-strength low-density oil well cement slurry system, based on an increase of research on the cement matrix, high-strength low-density properties of oil well cement aging research, so that the cement mixture from the oilfield site Cementing to mix cement manufacturer by professional production possible. Research papers in the temperature of 45 ℃ conditions, low pressure, low permeability, easy loss cementing formation of high-strength low-density required for the preparation of oil well cement program, the use of closest packing theory, the nucleation theory techniques to study the cement matrix, reduce the material, the cement admixture of the three aspects of high-strength low-density properties of oil well cement, indoor study of the system. The results show that the study of cement matrix and reduce the materials and additives to optimize the preparation of high-strength low-density cement to meet the Daqing oil region Hailaer cementing requirements. The cement slurry prepared with a high early strength, suitable for thickening time, rheological properties and flow of good, good stability of cement slurry characteristics of the settlement to meet the needs of formation cementing. The cement blocks in the Daqing oil field cementing Hailaer more than 230 mouth, cementing quality. Key words: oil well cement base cement compressive strength of low-temperature rheological properties of low-density

High-strength low-density oil field oil well cement mainly low, low permeability, easy loss cementing strata appear in the issue of lost circulation. In the low-voltage, low-permeability, easy loss stratigraphic drilling, cementing, logging and other underground work, the working fluid leakage under the pressure into the formation of the phenomenon of lost circulation. The use of high-strength low-density cement cementing oil wells can be effectively solved by cementing in the high pressure column of cement slurry, water slurry infiltration of oil, of oil pollution. At home and abroad for high-strength low-density study of oil well cement slurry system more and more concentrated in the admixture of materials and reduce the overall performance on the research, the main strength of the cement produced study material is rarely found in the literature. In this paper, Hailaer Daqing region of low pressure, low permeability, easy loss of formation, to carry out high-strength low-density study of oil well cement and cement matrix evaluate performance. Daqing Oilfield Cementing papers in accordance with the needs of the existing home and abroad in the study of high-strength low-density oil well cement slurry system, based on an increase of research on the cement matrix, high-strength low-density properties of oil well cement aging research, so that the cement mixture from the oilfield site Cementing to mix cement manufacturer by professional production possible. Research papers in the temperature of 45 ℃ conditions, low pressure, low permeability, easy loss cementing formation of high-strength low-density required for the preparation of oil well cement program, the use of closest packing theory, the nucleation theory techniques to study the cement matrix, reduce the material, the cement admixture of the three aspects of high-strength low-density properties of oil well cement, indoor study of the system. The results show that the study of cement matrix and reduce the materials and additives to optimize the preparation of high-strength low-density cement to meet the Daqing oil region Hailaer cementing requirements. The cement slurry prepared with a high early strength, suitable for thickening time, rheological properties and flow of good, good stability of cement slurry characteristics of the settlement to meet the needs of formation cementing. The cement blocks in the Daqing oil field cementing Hailaer more than 230 mouth, cementing quality.