Analysis on the mechanical properties of granite rock near the wellbore after percussive drilling and AWJ perforation

Li, Yanliang; Peng, Jianming; Bo, Kun; Huang, Chaoyang; Zhang, Yanjun; Zhang, Pengyu

doi:10.1016/j.petrol.2019.106489

Cited by 25 publications

(5 citation statements)

References 23 publications

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“…Выcoкaя тeхнoлoгичecкaя эффeктивнocть пoтoкo-кoррeктирующих cocтaвoв мoжeт быть дocтигнута при иcпoльзoвaнии выcoкoкaчecтвeнных пoлимeрoв, пoлнocтью oтвeчaющих тeхничecким трeбoвaниям, прeдъявлeнным в тaблицe 2. Эффeктивнocть пoтoкo-кoррeктирующих тeхнoлoгий (ПКТ) в знaчитeльнoй cтeпeни oпрeдeляeтcя cвoйcтвaми иcпoльзуeмых рeaгeнтoв [7]. Выбoр рeaгeнтoв ocущecтвлялcя c учeтoм индивидуaльных ocoбeннocтeй и cocтoяния рaзрaбoтки кoнкрeтнoгo мecтoрoждeния.…”

Section: бурениеunclassified

Analysis of Laboratory Studies of Hydrophobic Emulsions to Ensure Water Insulation Work in Oil Fields

AKHYMBAYEVA,

KABDULOV,

MAULETBEKOV

et al. 2024

NiG

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This article is devoted to the research and implementation of methods for ensuring water insulation works (WIW) in the oil sector using hydrophobic emulsions. In the context of modern requirements for environmental safety and efficiency of production processes in the oil industry, where water can become a source of problems, the introduction of innovative materials and technologies plays an important role. Conducting laboratory studies of hydrophobic emulsions for WIW in the oil sector is a multiprocess approach, starting from the initial assessment of the chemical component and ending with thorough testing for compliance with the requirements of specific operating conditions. The analysis evaluates the physico-chemical properties of the emulsion, such as density, viscosity, pH level, degree of dispersion, as well as its adhesive and cohesive characteristics. Special attention is paid to the study of the surface properties of hydrophobic emulsions, since their ability to form stable water-repellent coatings directly affects the effectiveness of protection against water exposure. To do this, tests are carried out on wettability, contact angle, adhesion to various types of surfaces, which allows us to determine the optimal conditions for the use of emulsions in specific situations. The article describes the principles of action of hydrophobic emulsions in the context of waterproofing works, emphasizing their ability to create a protective barrier, preventing moisture penetration into oil facilities. The paper presents the results of laboratory studies demonstrating the effectiveness of the use of hydrophobic emulsions in various operating conditions. The article discusses the technical aspects of the use of hydrophobic emulsions in the WIW process, analyzes their resistance to various environmental factors, and also considers the prospects for the development of this technology in the oil industry. The results obtained can be useful for specialists dealing with water insulation in oil companies, as well as for the scientific and engineering community interested in the development of innovative technologies in the oil sector. The purpose of this article is to analyze laboratory research and provide recommendations on the use of polymer composition.

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Section: бурениеunclassified

Analysis of Laboratory Studies of Hydrophobic Emulsions to Ensure Water Insulation Work in Oil Fields

AKHYMBAYEVA,

KABDULOV,

MAULETBEKOV

et al. 2024

NiG

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“…A large number of scientific works describe the technology of abrasive jet perforation for oil and gas wells and mainly consider the advantages of this method in terms of increasing reservoir rocks permeability and the wells productivity [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Well perforation optimization using an abrasive jet technique to create oriented slotted channels in terrigenous reservoirs

Chernyshov,

Ashikhmin,

Kashnikov

et al. 2024

Heliyon

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“…The effect of indenter shape, impact energy, and impact velocity on rock breakage performance was investigated. Li et al [36][37][38][39] studied deep granite's damage characteristics and crushing mechanism under impact load using research methods such as laboratory tests, theoretical analysis, and numerical simulation. They found the wall cracks generated by percussion drilling.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Simulation Study on the Mechanism of Fracture-Increasing and Permeability-Increasing in Granite Pore Walls by the Air DTH Hammer Percussion Drilling

Tian,

Yang,

Zhang

et al. 2024

Processes

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Air DTH (Down-The-Hole) hammer percussion drilling (vibration percussion drilling) has proven to be a highly efficient geothermal drilling technique, and percussion fractures near the wellbore benefit geothermal energy development in many ways (such as hydraulic fracturing, perforation, etc.). However, no research has been done on the mechanism of fracture-increasing and permeation-increasing in granite pore walls by air DTH hammer percussion drilling. This article: (1) using an air drilling test device, an air DTH hammer whole bit impact rock fragmentation test was conducted on granite in an atmospheric environment; (2) dyeing experiments, CT scanning, and 3D reconstruction modeling were used to characterize and identify wellbore cracks; (3) research the strength, porosity, and permeability changes of granite wellbore through mechanical and permeability testing experiments; and (4) numerical simulation of impact stress waves using particle flow code (PFC) 6.0 software to demonstrate the rationality of impact experimental results. The results show that the air DTH hammer impact can induce micro-cracks in the wellbore, and the distribution of cracks is regionalized, mainly due to the attenuation of the impact stress wave. The numerical results are consistent with the experimental results. The average strength of granite decreased by 16.5%, the average porosity increased by 9.5%, the average permeability increased by 63.3%, the porosity increased from 0.0025% to 0.03%, and the porosity increased by about 12 times under the air DTH Hammer percussion drilling. The above results provide the theoretical basis and experimental proof for the ability of air DTH hammer drilling to produce wellbore cracks and improve wellbore permeability. The presented experimental results can be a useful reference for building numerical models.

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Analysis on the mechanical properties of granite rock near the wellbore after percussive drilling and AWJ perforation

Cited by 25 publications

References 23 publications

Analysis of Laboratory Studies of Hydrophobic Emulsions to Ensure Water Insulation Work in Oil Fields

Analysis of Laboratory Studies of Hydrophobic Emulsions to Ensure Water Insulation Work in Oil Fields

Well perforation optimization using an abrasive jet technique to create oriented slotted channels in terrigenous reservoirs

Experimental and Numerical Simulation Study on the Mechanism of Fracture-Increasing and Permeability-Increasing in Granite Pore Walls by the Air DTH Hammer Percussion Drilling

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