21세기 신에너지자원 가스 하이드레이트 연구 (3)
상세정보
| 자료유형 | KIGAM 보고서 |
|---|---|
| 서명 | 21세기 신에너지자원 가스 하이드레이트 연구 (3) |
| 저자 | 류병재 |
| 언어 | KOR |
| 청구기호 | KR-99-B-09-1999-R |
| 발행사항 | 한국자원연구소, 1999 |
| 초록 | 가스 하이드레이트의 생성과 해리조건은 자체적으로 제작한 기기를 이용한 실험 연구를 통하여 수행하였다. 다양한 가스(methan, propane)와 수용액 (pre water, 3wt% NaCl solution, 3wt% MgCl₂ solution)을 이용한 실험을 통하여 가스 하이드레이트 평형조건과 압력에 따른 생성속도를 규명하였으며, 이를 기존 외국의 연구결과 및 열역학적 모델 연구결과와 비교하였다 Natural gas hydrate, a special type of clathrate hydrates, is a metastable solid compound which mainly consists of methane and water, and generally called as gas hydrate. It is stable in the specific low-temperature/high-pressure conditions. Gas hydrates play an important role as major reservoir of methane on the earth. On the other hand, the formation and dissociation of gas hydrates could cause the plugging in pipeline, gas kick during production, atmospheric pollution and geohazard. To understand the formation and dissociation of the gas hydrate, the experimental equilibrium conditions of methane hydrate were measured in pure water, 3 wt% NaCl and MgCl₂ solutions. The equilibrium conditions of propane hydrates were also measured in pure water. The relationship between methane hydrate formation time and overpressure was also analyzed through the laboratory work. The geophysical surveys using air-gun system and multibeam echosounder were implemented to develop exploration techniques and to evaluate the gas hydrate potential in the East Sea, Korea. General indicators of submarine gas hydrates on seismic data is commonly inferred from the BSR developed parallel to the see floor, amplitude blanking at the upper part of the BSR, and phase reversal and decrease of the interval velocity at BSR. The field data were processed using Geobit 2.9.5 developed by KIGAM to detect the gas hydrate indicators. The accurate velocity analysis was performed by XVA (X-window based Velocity Analysis). Processing results show that the strong reflector occurred parallel to the sea floor were shown at about 1800 ms two way travel time. The interval velocity decrease at this strong reflector and at the reflection phase reversal corresponding to the reflection at the sea floor. Gas hydrate stability field in the study area was determined using the data of measured hydrate equilibrium condition, hydrothermal gradient and geothermal gradient. The depth of BSR detected in the seismic data coincides with the low boundary of analyzed gas hydrate stability field |
| 페이지 | 179 p. |
| 키워드 | 가스, 하이드레이트, 에너지, 메탄 |
| 원문 | 다운로드 |
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