AP26103635 – Development and optimization of an impact-hydraulic system for multi-well drilling and enhancing the productivity of low-yield wells in low-permeability reservoirs

Objective of the project – The aim of the project is to develop and create an innovative technology for multi-hole drilling using a shock-hydraulic system and deflectors to increase the productivity of low-flow wells in poorly permeable formations. The main question that the project answers is how to effectively use a shock-hydraulic system to create additional shafts through cutouts in casing strings, which will increase the drainage surface of wells and increase their productivity. The project is aimed at achieving technological readiness of solutions for industrial implementation.

Relevance: The relevance of the project is driven by the need to improve the efficiency of developing low-rate oil wells, particularly in low-permeability reservoirs typical of fields in the Republic of Kazakhstan. Existing technologies for drilling additional laterals are characterized by high costs and technological complexity, which limits their widespread application. The use of percussion-hydraulic systems and deflectors for drilling through casing windows enables a reduction in tripping operations, lowers operational costs, and increases the drainage area of the reservoir. Therefore, the development of new technological solutions in this field is a critical task for enhancing well productivity and strengthening the competitiveness of the oil and gas industry.

Scientific supervisor: Akhymbayeva Bibinur Serikovna, PhD in Engineering, Associate Professor

Expected and achieved results:

Planned publication

at least 2 articles and (or)reviews in peer-reviewed scientific publications indexed in the Science Citation Index Expanded and included in the 1st and (or) 2nd quartile by impact factor in the Web of Science database and (or) having a CiteScore percentile CiteScorein the Scopus database of at least 65

at least 2 articles or reviews in a peer-reviewed foreign or domestic publication recommended by SHEQACMSHERK

One of the articles will be published with the category multidisciplinary (multidisciplinary or interdisciplinary practical application) on the tasks of enterprises from the real sector of the economy of Kazakhstan, as well as the results of the project will include design doc.prepared according to the USDD

For domestic journals from list 1 of the SHEQACMSHERK; that do not belong to the multidisciplinary category,journals from lists 1 and 2 of the SHEQACMSHERK that are indexed in two or more categories are counted.

2)publication of monogr. books and (or) chapters in books of foreign and(or) Kazakhstan publishing houses:planned

3)obtaining patents from foreign patent bureaus(European, American, Japanese), Kazakhstan or Eurasian patent bureaus:planned

4)development of scientific, tech.and design documentation:planned

5)dissemination of research results to potential users, the scientific community and the public:The project results will be disseminated through scientific publications in international and national journals, presentations at specialized conferences and seminars, as well as through direct communication with oil and gas companies, including leading enterprises of Kazakhstan and international corporations.The focus will be on publications in drilling and oil and gas technology journals, as well as reports for government and industry organizations.It is also planned to participate in webinars and round tables for the public and industry specialists. In addition, a website with information about the project and the final result will be developed.

6)other measurable results in accordance with the requirements of the tender documentation and project specifics. Additionally, the section specifies

1)scope and target consumers of each of the expected results: The scope of application - is the oil and gas industry, in particular technologies for drilling wells in low-permeable formations

Target consumers - are oil and gas companies engaged in the development of low-yield wells, manufacturers of drilling equipment, as well as research institutes

2)the impact of expected results on the development of the main research area and related fields of science and techn:The developed technology of the shock-hydraulic drilling system will contribute to the development of oil and gas technologies, increasing well productivity, which will have a positive impact on related fields of science, such as hydrodynamics, mat.science and mechatronics, through the introduction of new approaches to drilling and management wells

3)applicability and / or commercialization of the obtained scientific results: The technology has a high potential for commercialization due to its demand in the oil and gas sector. It is intended for commercial use in mining companies where there is already a demand to reduce drilling costs and increase well productivity

4)social, economic, environmental, scientific and technical, multiplicative and (or) other effect of the project results with justification, including for solving existing problems in the country's regions

Social impact:Creating new jobs in the process of introducing technology and improving the socio-economic situation of regions with developed oil production.

Economic effect:Reducing the cost of drilling wells by 15-20%, which will increase the competitiveness of Kazakhstan's oil and gas companies

Environmental impact:Reducing the environmental burden by reducing the number of drilling operations and optimizing the use of resources

Scientific and technical effect:Improving the level of scientific research in Kazakhstan, expanding the technological potential of the industry and increasing the international status of scientific organizations in the country

5)other direct and indirect results of the project, indicating their qualitative and quantitative charact Also, the project provides for the defense of the doctoral thesis of the junior researcher of the project, Diana Omarova Armankyzy, a doctoral student of the 1st year of study in the educational program 8D07202-«Petroleum Engineering» at the K.Satpayev KazNRTU. The head of this project, PhD doctor, Ass.Professor B.S. Akhymbayeva, is the domestic scien.consultant of the doctoral student

In 2025, key preparatory stages for the creation of a prototype were completed. An analysis of more than 50 domestic and international sources was carried out, including industrial patents and test results. Structural designs of the impact module were developed, ensuring stable hydraulic impact within a frequency range of 10–20 Hz and pressures up to 25 MPa. The parameters of interaction between the impact piston and the drilling tool, as well as the energy distribution along the tool length, were determined.

The scientific novelty of the project is as follows:
– for the first time in Kazakhstan, the integration of stationary and retrievable deflectors with a hydraulic impact unit has been proposed, enabling the drilling of additional laterals without the need for multiple tripping operations;
– a concept of a modular design has been developed, allowing rapid adaptation of the system to various geological conditions (sandstones, dolomites, clay shales);
– optimal ranges of impact frequency and amplitude have been determined to minimize cavitation wear;
– a relationship between the deviation angle of the drilling system and the efficiency of impact energy transmission has been established;
– an algorithm for calculating hydraulic impulse parameters has been developed, taking into account nonlinear effects in the drilling fluid flow, which were not previously considered in existing models.

The obtained results formed the basis for the technical specifications for manufacturing a prototype in 2026.