Tokyo Gas Company Limited

Japan Oil, Gas and Metals National Corporation

Kyoto University

Toshifumi Matsuoka

Ziqiu Xue

Hiromichi Kameyama

Susumu Nishio

Akira Saito

Yasuhiko Nagasaki

Koichi Okuzumi

There are provided a carbon dioxide storage apparatus and a carbon dioxide storage method which, through direct injection of carbon dioxide into an underground brine aquifer, can store carbon dioxide efficiently in the brine aquifer. A filter formed of, for example, grindstone is provided at a tip portion of an injection well. A pumping apparatus pumps carbon dioxide stored in a carbon dioxide tank. The pumping apparatus feeds carbon dioxide from the carbon dioxide tank into the injection well by means of a pump. In the pumping apparatus, carbon dioxide is held within a predetermined pressure range and a predetermined temperature range. Carbon dioxide is fed through the injection well, and is injected into a brine aquifer. Carbon dioxide injected into the brine aquifer assumes the form of microbubbles.

Device and method for sequestering a substance

A filter () is provided at a tip portion of an injection well (). A pumping apparatus () pumps carbon dioxide stored in a carbon dioxide tank (). The pumping apparatus () feeds carbon dioxide from the carbon dioxide tank () into the injection well () by means of a pump. In the pumping apparatus, the pressure and temperature of carbon dioxide are maintained at respective predetermined levels or higher by means of a pressure regulation valve, a temperature regulator, etc., whereby carbon dioxide enters a supercritical state. The carbon dioxide having entered a supercritical state is fed in the direction of arrow A through the injection well (), passes through the filter () provided at an end portion of the injection well (), and is injected into a brine aquifer (). Carbon dioxide injected into the brine aquifer () assumes the form of microbubbles.

Storing device for stored substance and method for storing stored substance

A magnetic field sensor deviceincludes a sensor sectionthat includes a magneto-impedance devicehaving a magnetic amorphous structure, and rod-shaped core sectionsandthat guide a magnetic field to the magnetic amorphous structure in a longitudinal direction with respect to the magnetic amorphous structure. The core sectionsandmay be provided on either side of the magnetic amorphous structure in the longitudinal direction. The core sectionsandmay be disposed so that the longitudinal direction of the magnetic amorphous structure coincides with the longitudinal direction of the core sectionsand. The magnetic field sensor devicemay include environmental magnetic field cancellation meansandthat generate a correction magnetic field that cancels the environmental magnetic field input to the magnetic amorphous structure.

Magnetic field sensor device

An underground electromagnetic exploration method using an induced current generating transmitter that cyclically generates an induced current includes repeating magnetic field observations at multiple measurement points on earth's surface, the magnetic field observations including observing a magnetic field including a magnetic field signal based on output from the induced current generating transmitter using a magnetic field sensor device including a sensor and a rod-shaped core; wherein the sensor includes a magneto-impedance device having a magnetic amorphous structure; and wherein the rod-shaped core guides a magnetic field to the magnetic amorphous structure and is disposed longitudinally along the magnetic amorphous structure, and storing magnetic field observational data including a magnetic field signal based on output from the induced current generating transmitter, and calculating an underground specific resistivity distribution based on the observational data corresponding to each measurement point.

Growing community of inventors

Kyoto, Japan

Toshifumi Matsuoka