Pressure-maintaining coring mechanism, rope pressure-maintaining coring device and pressure-maintaining coring method
The invention belongs to the technical field of well drilling coring, and discloses a pressure maintaining coring mechanism which comprises a pressure maintaining coring device, a pressure maintaining bin assembly, a plugging ring and a pressure divider. The pressure maintaining coring device compri...
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Format | Patent |
Language | Chinese English |
Published |
11.06.2024
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Subjects | |
Online Access | Get full text |
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Abstract | The invention belongs to the technical field of well drilling coring, and discloses a pressure maintaining coring mechanism which comprises a pressure maintaining coring device, a pressure maintaining bin assembly, a plugging ring and a pressure divider. The pressure maintaining coring device comprises a heat preservation pipe and an inner layer pipe, the inner layer pipe is coaxially arranged in the heat preservation pipe, and a first annular space is formed between the inner layer pipe and the heat preservation pipe; the pressure maintaining bin assembly comprises a carrying pipe, and a sealing seat is inserted into the inner-layer pipe in a sealed mode to form a second annulus. The carrying pipe comprises an inner wall and an outer wall, a sealed third annular space is formed between the inner wall and the outer wall, and the carrying pipe has elasticity; the plugging ring is hermetically inserted into the inner-layer pipe to plug the second annulus; the pressure divider comprises a pressure dividing drivi |
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AbstractList | The invention belongs to the technical field of well drilling coring, and discloses a pressure maintaining coring mechanism which comprises a pressure maintaining coring device, a pressure maintaining bin assembly, a plugging ring and a pressure divider. The pressure maintaining coring device comprises a heat preservation pipe and an inner layer pipe, the inner layer pipe is coaxially arranged in the heat preservation pipe, and a first annular space is formed between the inner layer pipe and the heat preservation pipe; the pressure maintaining bin assembly comprises a carrying pipe, and a sealing seat is inserted into the inner-layer pipe in a sealed mode to form a second annulus. The carrying pipe comprises an inner wall and an outer wall, a sealed third annular space is formed between the inner wall and the outer wall, and the carrying pipe has elasticity; the plugging ring is hermetically inserted into the inner-layer pipe to plug the second annulus; the pressure divider comprises a pressure dividing drivi |
Author | WU JIAN FAN ZHILI PENG WENCHUN CHAO WEIWEI KONG LINGQIANG GUO YING ZHAO TONG MI HONGGANG ZHU GUANGHUI WANG BO |
Author_xml | – fullname: ZHU GUANGHUI – fullname: GUO YING – fullname: ZHAO TONG – fullname: MI HONGGANG – fullname: KONG LINGQIANG – fullname: FAN ZHILI – fullname: PENG WENCHUN – fullname: WU JIAN – fullname: CHAO WEIWEI – fullname: WANG BO |
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DocumentTitleAlternate | 保压取心机构、绳索保压取心装置及保压取心方法 |
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Snippet | The invention belongs to the technical field of well drilling coring, and discloses a pressure maintaining coring mechanism which comprises a pressure... |
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SubjectTerms | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS |
Title | Pressure-maintaining coring mechanism, rope pressure-maintaining coring device and pressure-maintaining coring method |
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