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A kind of mud gun seismic source drilling tool and process method
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A drilling tool and mud gun technology, which is applied in the field of geophysical exploration, can solve problems such as failure to apply, limiting the excitation depth of mud guns, and inability to effectively download seismic waves.
Active Publication Date: 2016-06-29
BGP OF CHINA NAT GASOLINEEUM CORP
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Problems solved by technology
There are domestic and foreign related companies conducting research on the application of air guns and mud guns, but they mainly use mechanical pressing, which limits the excitation depth of mud guns, and the surface layer of thin mud absorbs seismic waves seriously, and seismic waves cannot be effectively transmitted down. not used in actual production
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Embodiment 1
[0015] Embodiment 1: as figure 1 , figure 2 As shown, a mud gun seismic source drilling tool includes a drill bit assembly 1, a lower retaining ring 2, a drill housing 3, a screw assembly 4, a filling body 5, a mud gun 6, an upper retaining ring 7, and a transition cone sleeve 8. Short fixing bolt 9, anti-rotation fixing bolt 10, long anti-rotation fixing bolt 11, long fixing bolt 12.
[0016] The drill bit assembly 1 is assembled and welded by reinforcing ribs and small drill bits, and is integrally welded on the lower retaining ring 2 with a drilling diameter of 450mm; 3. The inner diameter is 200mm; the screw assembly 4 is assembled and welded by the screw and a small drill bit, and is integrally welded on the outer circle of the lower side of the air outlet of the drilling tool shell 3. The outer diameter of the screw is 450mm, and the lead is 500mm; The filling body 5 is clamped and fixed in the annular space between the mud gun 6 and the air outlet position of the dri...
Embodiment 2
[0018] Embodiment 2: as figure 1 , figure 2 As shown, a mud gun seismic source drilling tool includes a drill bit assembly 1, a lower retaining ring 2, a drill housing 3, a screw assembly 4, a filling body 5, a mud gun 6, an upper retaining ring 7, and a transition cone sleeve 8. Short fixing bolt 9, anti-rotation fixing bolt 10, long anti-rotation fixing bolt 11, long fixing bolt 12.
[0019] The drilling tool housing 3 is in the shape of a hollow cylinder, and the mud gun 6 can be installed and fixed inside the drilling tool housing 3. The drilling tool housing is processed with a vent hole, and its position is aligned with the air outlet of the mud gun.
[0020] A filling body 5 is installed in the annular space between the drilling tool shell 3 and the mud gun 6 at the air outlet position, and the filling body 5 is also processed with an air outlet, and the position is aligned with the air outlet of the mud gun 6 .
[0021] The lower retaining ring 2 and the upper retai...
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Abstract
A mud gun seismic source drilling tool and a process method belong to the technical field of geophysical exploration. It includes the following steps; while drilling, the mud gun follows the drilling tool to the excitation depth, then the air gun can be activated, and then the drilling tool is lifted for relocation, which can realize green and environmentally friendly construction in extremely shallow water areas. The invention has the advantages that the mud gun can be conveniently placed at the set excitation depth to realize the mud gun excitation while drilling, which is environmentally friendly and efficient, can replace explosives, and meets the green exploration requirements of the transition zone with a water depth of 0-1m and swamp areas.
Description
technical field [0001] The invention relates to a mud gun seismic source drilling tool and a process method, belonging to the technical field of geophysical exploration. Background technique [0002] At present, oil exploration equipment mainly includes vibrators (used for relatively flat land), explosives, and air gun sources (used in areas with a water depth greater than 3m), but in land-water interactive zones and swampy areas, ships cannot travel due to vibrators and air gun sources. , only explosives can be used, which has poor environmental protection, high construction costs, and potential safety hazards. In some areas, local governments or oil companies do not allow the use of explosives. Foreign air gun manufacturers have developed mud guns that can be excited in mud, but they have not been successfully applied. There are domestic and foreign related companies conducting research on the application of air guns and mud guns, but they mainly use mechanical pressing, ...
Claims
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Application Information
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