Наукова періодика України Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu


Hrymaniuk V. I. 
Elaboration of reinforced cement material for cementing of deviated wells / V. I. Hrymaniuk, V.V. Bogosladets, V.I. Kolisnyk // Науковий вісник Національного гірничого університету. - 2017. - № 6. - С. 23-28. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2017_6_5
Purpose. To improve mechanical properties of cement stone and rheological properties of cement slurries, which are used to cement deviated wells by means of development of reinforced cement slurry mixtures. Methodology. Computational of cement slurry and stone with the various types of reinforcing additives, the optimum content of the reinforcing additive was established based on the features of the work of the material in the deviated section of the well. Findings. Analysis of literature sources as well as conducted calculations has shown that at the stage of construction of deviated section of the well, there is a risk of cracks appearing in the cement stone behind the casing string. It was established that the cement materials used at the present time cannot withstand the stresses that occur in the cement stone during the drilling of the deviated section of a well. It has been found that the use of a synthetic reinforcing additive improves the strength and fracture toughness of a cement material by 2 and 3 times, respectively. It has been proved that the use of a combination of calcium chloride additives and a reinforcing agent during the preparation of cement slurry allows reducing the Young's modulus of the cement stone, which is the basis for improving its deformability. The addition of calcium chloride and fiber to the cement slurry increases its sedimentation resistance, which greatly contributes to the prevention of the cracks in the annulus of directional wells and increases the homogeneity of cement material. Originality. By means of laboratory tests the value of Young's modulus for cement stone was detailed, which is less than 54 - 65 % compared with the value of the same indicator for traditional cement stone without the reinforce additive component in it, which explains improvement of deformation characteristics. A new blend composition of cement slurry has been developed that makes cement stone to provide containment of annular work-space of deviated part of a well while conducting different types of technical operations in it.
  Повний текст PDF - 2.384 Mb    Зміст випуску     Цитування публікації

Цитованість авторів публікації:
  • Hrymaniuk V.
  • Bogosladets V.
  • Kolisnyk V.

  • Бібліографічний опис для цитування:

    Hrymaniuk V. I. Elaboration of reinforced cement material for cementing of deviated wells / V. I. Hrymaniuk, V.V. Bogosladets, V.I. Kolisnyk // Науковий вісник Національного гірничого університету. - 2017. - № 6. - С. 23-28. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2017_6_5.

      Якщо, ви не знайшли інформацію про автора(ів) публікації, маєте бажання виправити або відобразити більш докладну інформацію про науковців України запрошуємо заповнити "Анкету науковця"
     
    Відділ інформаційно-комунікаційних технологій
    Пам`ятка користувача

    Всі права захищені © Національна бібліотека України імені В. І. Вернадського