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A combined ultra-shallow water air gun source system and process method

A combined, ultra-shallow technology, applied in the field of geophysical exploration, can solve problems such as low energy, inability to construct, and inability to fully meet production needs

Active Publication Date: 2016-09-07
BGP OF CHINA NAT GASOLINEEUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mud gun vibrator system used in the past has fewer guns and lower energy, and can only be constructed in 0-0.5m waters, which cannot fully meet production needs
The existing air gun source ship cannot be constructed in this area due to the limitation of the draft of the ship and the sinking depth of the air gun.

Method used

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  • A combined ultra-shallow water air gun source system and process method
  • A combined ultra-shallow water air gun source system and process method
  • A combined ultra-shallow water air gun source system and process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as figure 1 , figure 2 , image 3 as shown,

[0021] The combined ultra-shallow water air gun source system consists of a floating box platform 1, a four-track structure 2, a lifting column 3, a drilling rig 4, a winch 5, a propeller 6, a cab 7, a main engine 8, an air compressor 9, a pulling rod 10, and a pendulum Arm 11, rubber air bag 12, air gun 13 and steel wire rope 14 form.

[0022] Such as figure 1 As shown, the pontoon platform 1 can be disassembled longitudinally, and the conditions for land transportation can be met after disintegration. The pontoon platform 1 adopts a double-bottom structure, and the upper edge of the structure is level with the lifting column 3 . The pontoon platform 1 is connected to the four-track structure 2 through the lifting column 3. The four-track structure 2 can realize land and seabed walking, and the propeller 6 can realize water-propelled navigation, thereby realizing the combination of the two walking mechan...

Embodiment 2

[0025] Embodiment 2: as figure 1 , figure 2 , image 3 as shown,

[0026] The combined ultra-shallow water air gun source system adopts the crawler walking mode when the water depth is 0 meters to 2.5 meters, and the water depth reaches 1.7 meters to form a floating state. In the floating state, drilling operations cannot be carried out due to the inability to locate. When the water depth reaches more than 1.7 meters, the buoyancy of the whole system can be adjusted by adjusting the lifting column, so that when the water depth is less than 2.5 meters, the crawler can be used to walk and carry out drilling operations without leaving the bottom of the water. In this way, the well stimulation operation mode is realized. When the system is in a floating state, it can also be propelled by twin propellers to sail. At this time, the rear-drag array is lowered and the air gun excitation operation is performed, thus realizing the rear-drag underwater excitation operation mode.

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Abstract

The invention discloses a combined ultra-shallow steam gun vibration source system and a process method, and belongs to the technical field of geophysical exploration. The combined ultra-shallow steam gun vibration source system consists of a buoyancy tank platform, a four-track structure, a lifting vertical column, a drilling machine, a winch, a propeller, a cab, a host machine, an air compressor, a lifting rod, a swinging arm, a rubber air bag, an air gun and a steel wire rope, wherein the buoyancy tank platform can be decomposed longitudinally, and satisfies the condition of road transportation after decomposition; the buoyancy tank platform has a dual-layer bottom structure, and the height of the structure is flush with the lifting vertical column; the buoyancy tank platform is connected with the four-track structure through the lifting vertical column; land and seabed walking can be realized through the four-track structure, and hydraulic sailing can be realized through the propeller, thereby realizing the combination of two kinds of walking mechanisms. The combined ultra-shallow steam gun vibration source system has the advantages that by adopting an assembled structure, two walking modes, namely, track walking and floating sailing can be realized, and two operation modes of borehole excitation and back trailing water excitation can be realized.

Description

technical field [0001] The invention relates to a combined ultra-shallow water air gun seismic source system and a process method, belonging to the technical field of geophysical exploration. Background technique [0002] In the oil exploration of the beach-sea transition zone, the ultra-shallow water area with a water depth of 2m-0m is generally a seaside swamp area. Many countries have designated this area as a nature reserve, and the use of explosives as a seismic source is prohibited. The mud gun seismic source system used in the past has fewer guns and lower energy, and can only be constructed in 0-0.5m waters, which cannot fully meet production needs. The existing air gun seismic source ship cannot be constructed in this area due to the limitation of the draft of the ship and the sinking depth of the air gun. Contents of the invention [0003] The present invention analyzes the previous air gun source system and combines the construction ground conditions to invent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/44B63B35/00E21B7/02E21B7/12
Inventor 李海军李亚夫陈浩林胡宝京韩桂合王红军高斌史颖戴丽丽马强
Owner BGP OF CHINA NAT GASOLINEEUM CORP