SU636385A1 - Tool for drilling in coal seam - Google Patents

Tool for drilling in coal seam

Info

Publication number
SU636385A1
SU636385A1 SU772492524A SU2492524A SU636385A1 SU 636385 A1 SU636385 A1 SU 636385A1 SU 772492524 A SU772492524 A SU 772492524A SU 2492524 A SU2492524 A SU 2492524A SU 636385 A1 SU636385 A1 SU 636385A1
Authority
SU
USSR - Soviet Union
Prior art keywords
tool
drilling
coal seam
coal
rock
Prior art date
Application number
SU772492524A
Other languages
Russian (ru)
Inventor
Александр Сергеевич Юшков
Original Assignee
Донецкий Ордена Трудового Красного Знамени Политехнический Институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Донецкий Ордена Трудового Красного Знамени Политехнический Институт filed Critical Донецкий Ордена Трудового Красного Знамени Политехнический Институт
Priority to SU772492524A priority Critical patent/SU636385A1/en
Application granted granted Critical
Publication of SU636385A1 publication Critical patent/SU636385A1/en

Links

Description

мента возникает сила, стрем ща с  вывести ее в сторону менее твердой породы угл . В то же врем  не возникает и условий , которые привод т к уходу скважины вверх от контакта. Значительный вес головного участка и наличие боковых рез цов не позвол ют вести бурение по углю без разрушени  лежачей стенки скважины а повышенна  жесткость головной части инструмента устран ет возникновение составл ющих осевой нагрузки, стрем щихс  направить инструмент в сторону кровли . В зависимости от свойств угл  и породы весова  характеристика инструмента и удельна  нагрузка на один боковой резец могут измен тьс  путем изменени  длины инструмента и количества фрез и резцов, в том числе может быть сохранена удельна  нагрузка, характеризующа  обьп1 1ый буровой инструмент. Дл  снижени  жесткости соединени  такого инструмента с остальной колонной труб в необходимых случа х может быть использовано шарнирное соединение . Предлагаемый инструмент будет следовать вдоль контакта угл  и породы 6 854 с высокой степенью надежности, в том числе и при изменчивой гипсометрии пласта . рмула изобретени Инструмент дл  бурени  в угольном пласте, содержащий коронку конической формы и рабочий участок с боковыми резцами , отличающийс  тем, что, с целью повышени  надежности следовани  инструмента вдоль контакта угл  и породы, рабочий участок выполнен в виде св занных между собой конических фрез с наружным диаметром, равным наружному диаметру коронки. Источники информации, прин тые во внимание при экспертизе: 1. Сафохин М. С. и др. Маши1ш и инструмент дл  бурени  скважин в угольных шахтах. М., Недра, 1972, с.8398 . 2. Итоги науки. Тех}шка геологоразведочных работ. Направленное и многозабойное бурение. М., ВИНИТИ, 1966, с. 27, рис. 12.A force arises, tending to lead it towards the less hard coal rock. At the same time, there are no conditions that cause the well to go up from the contact. The significant weight of the head section and the presence of lateral cuts prevent drilling over coal without destroying the underlying wall of the well, and the increased rigidity of the head part of the tool eliminates axial load components, which tend to direct the tool towards the roof. Depending on the properties of coal and rock, the weight characteristic of the tool and the specific load on one side cutter can be changed by changing the tool length and the number of mills and cutters, including the specific load that characterizes the first drilling tool. To reduce the stiffness of the connection of such a tool with the rest of the tubing, a swivel joint can be used where necessary. The proposed tool will follow along the contact of coal and rock 6,854 with a high degree of reliability, including with variable hypsometry of the formation. The scope of the invention A tool for drilling in a coal seam containing a conical-shaped crown and a working section with lateral incisors, characterized in that, in order to increase the reliability of the tool following the contact of coal and rock, the working section is made in the form of interconnected conical cutters diameter equal to the outer diameter of the crown. Sources of information taken into account in the examination: 1. Safokhin, M.S., et al. Machi1sh and tools for drilling wells in coal mines. M., Nedra, 1972, p. 8398. 2. Results of science. Tech} scale exploration. Directional and multi-well drilling. M., VINITI, 1966, p. 27, fig. 12.

SU772492524A 1977-07-01 1977-07-01 Tool for drilling in coal seam SU636385A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772492524A SU636385A1 (en) 1977-07-01 1977-07-01 Tool for drilling in coal seam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772492524A SU636385A1 (en) 1977-07-01 1977-07-01 Tool for drilling in coal seam

Publications (1)

Publication Number Publication Date
SU636385A1 true SU636385A1 (en) 1978-12-05

Family

ID=20711731

Family Applications (1)

Application Number Title Priority Date Filing Date
SU772492524A SU636385A1 (en) 1977-07-01 1977-07-01 Tool for drilling in coal seam

Country Status (1)

Country Link
SU (1) SU636385A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324300A (en) * 1980-06-30 1982-04-13 Logan Jr Clifford K Rotary drill bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324300A (en) * 1980-06-30 1982-04-13 Logan Jr Clifford K Rotary drill bit

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