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Dutova Oxana

Dutova Oxana

Mining and geology institute

Speciality: Technology and engineering of inverstigation of deposits of minerals

Theme of master's work:

Improvement hammers for drilling technology and degassing wells

Scientific adviser: Karakozov A.A.

About author

Summary of research and developments


The goal of the project is to improve the calculation method for a hydraulic hammer for borehole drilling, its operation regularity specification, the design of its practical structure and application technology.

Object and Subject of the Research

The research object is a hydraulic hammer mechanism for technical and decontamination borehole drilling. The research subject is the operation process in a hydraulic hammer mechanism for technical and decontamination borehole drilling.

Research tasks:

1. Analysis of the present situation with a hydraulic hammer mechanism for borehole drilling.

2. Analysis of the up-to-date calculation method of a hydraulic hammer mechanism for borehole drilling.

3. Improvement of the calculation method of a hydraulic hammer mechanism considering its operation cycle peculiarities.

4. Improvement of the construction of a hydraulic hammer mechanism for technical and decontamination borehole drilling and its application technology.

Topicality of the project

Technical and decontamination borehole drilling in Donbass region is carried out mostly with geological prospecting drilling plants or with the plants for water drilling. The construction peculiarities and driving power of this equipment disables the rational load of a bit by big diameters borehole drilling. That causes the decrease of the effectiveness of drilling process and its technical and economical rates. Besides, the considerable expenditures for the rock-destroying equipment by drilling with roller cone bits (especially by rock drilling) also negatively effect drilling costs.

Thus, the design of a hydraulic hammer mechanism, applicable both for intensification of the drilling with roller cone bits and for hard-rotary drilling with chisel bits, is quite topical for technical and decontamination borehole drilling in Donbass region. In the first case it increases technical and economical rates of the drilling process, and in the second case it lowers the costs by applying the cheaper tools. That's why it may be claimed, that the structure improvement of a hydraulic hammer for borehole drilling is quite topical. Estimated novelty of the research results includes the application of a hydraulic hammer mechanism for the intensification of the drilling with roller cone bits or its complete replacement with the hard-rotary drilling.

Possible Practical Results:

1. The improved calculation method for a hydraulic hammer mechanism for technical and decontamination borehole drilling.

2. Construction of an improved percussion mechanism (at the level of invention) and its application technology

The research significance includes the development of the calculation method of a hydraulic hammer mechanism and its construction, and also the explanation of the constructive parameters and its application technology. Review of the researches and. development projects on the topic.

The global review of the development projects on the given topic shows that the quantity of the organizations involved in the similar projects is limited. That means that the financial investing to the development of such mechanisms is unreasonable, because such investing will not result in the application of these mechanisms in a specific field or region.

The application of the given hydraulic hammer allows decreasing the unproductive power expenditures for borehole washing by means of the liquid flowing to a bottomhoie simultaneously with the hydraulic hammer disconnecting.


It is planned to implement the following

* Analysis of the present situation with a hydraulic hammer mechanism for borehole drilling.

* Analysis of the up-to-date calculation method of a hydraulic hammer mechanism for borehole drilling.

* Improvement of the calculation method of a hydraulic hammer mechanism considering its operation cycle peculiarities.

* Improvement of the construction of a hydraulic hammer mechanism for technical and decontamination borehole drilling and its application technology.

Selected Bibliography

  1. Справочник инженера по бурению геологоразведочных скважин: В 2-х томах: Под общей ред. проф. Е. А. Козловского. - Том. 1. - М.: Недра, 1984. 512 с.
  2. Справочник инженера по бурению геологоразведочных скважин: В 2-х томах: Под общей ред. проф. Е. А. Козловского. - Том. 2. - М.: Недра, 1984. 437 с.
  3. О.И.Калиниченко, П.В.Зыбинский. Забойные буровые машины: учебное пособие. - 2-е изд., исправл. и доп. - Донецк: донНТУ, 2006, - 222 с
  4. Оптимизация бурения скважин в осложненных условиях. Сборник Донецк, ДПИ, 1991
  5. Ясов В. Г., Мысюк М. А. Осложнения в бурении: Справочное пособие. - М.: Недра, 1991. - 334с.
  6. Киселев и др. пути развития гидроударного бурения. - М.: Недра, 1985.
  7. Эпштейн Е. Ф., Ясов В. Г. Бурение скважин гидроударниками и пневмоударниками. - М.: Недра, 1967.
  8. Калиниченко О. И., Каракозов А. А. Забойные буровые машины. Учебное пособие. - Донецк: "Новый мир", 1998. - 116 с.
  9. Ясов В. Г. Теория и расчет рабочих процессов гидроударных буровых машин. - М.: Недра, 1977. - 153с.;

  10. Kemp G. Oilwell Fishing Operations:Tools and Techniques.- Gulf Publishing Сотр., Book Division,1986.

  11. Skeem M.R., Friedman M.B. and Walker B.H. Drillstring Dynamics During Jar Operation.- Journal of Petroleum Technology ,Nov., 1979.;


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