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Natural gas hydrate census exploitation method

A hydrate and natural gas technology, applied in the field of electrical exploration, can solve the problems of identifying natural gas hydrate storage areas that have not been precedented, and the ability to identify oil and gas storage areas is poor

Inactive Publication Date: 2007-03-07
邓霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the well-known electrical prospecting technologies include resistivity prospecting, induced polarization prospecting, and electromagnetic prospecting. These three types of technologies are poor in identifying oil and gas storage areas, and there is no precedent for identifying natural gas hydrate storage areas.

Method used

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  • Natural gas hydrate census exploitation method
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Embodiment Construction

[0011] In Fig. 1, the measurement system is composed of ground control equipment (1), cables (2), measuring instruments (3), and towed cable probes (4) in order to form a mechanical connection and electrical connection, and the signal source (5) One output terminal is connected to the input terminal of the current source (6), the output terminal of the current source (6) is connected to the input terminal of the sampling circuit (7), and one output terminal of the sampling circuit (7) is connected to the A electrode (12), The A electrode (12) communicates with the earth at one point through the seawater, and the B1 electrode (13), the B2 electrode (14), and the BN electrode (15) communicate with the other point of the earth through the seawater respectively and respectively connect the circuit (16) with the B electrode cycle. The input end is connected, the output end of the B electrode cycle connection circuit (16) is connected with the loop end of the current source (6), the ...

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Abstract

This invention relates to gas hydrate census exploring method, which comprises earth control device, cable, measurement device, drag cable detector orderly connected by mechanic means to form measurement system, wherein, the measurement device generates certain conductive current through the drag detector to A and B points to form voltage V, compound current Iz, hard current Ir, virtual current Ix and phase theta five signals and collecting five signals as four sampling computation of capacity C and changing A electrode and B electrode distance to change detecting depth along measurement move load tool to pull continuous area to get the three dimensional materials; Finally using the base of capacity apparent larger than the circle area.

Description

technical field [0001] The invention relates to a new electrical prospecting method in the field of petroleum and natural gas exploration, and is especially suitable for general survey and exploration work of natural gas hydrate and petroleum and natural gas resources. Background technique [0002] At present, there are three types of electrical prospecting techniques known: electrical resistivity prospecting, induced polarization prospecting, and electromagnetic prospecting. These three types of technologies are poor in identifying oil and gas storage areas, and there is no precedent for identifying natural gas hydrate storage areas. Contents of the invention [0003] In order to overcome the lack of oil and gas identification ability of existing electrical exploration, the present invention provides an exploration method for measuring earth permittivity, which has a strong identification ability for oil and gas storage areas, especially natural gas hydrate storage areas, ...

Claims

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Application Information

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IPC IPC(8): G01V3/00
Inventor 邓霞
Owner 邓霞