A New Method to Describe the Formation Framework of the Volcanic Gas Reservoir hierarchically
- Lin Yan (Research Institute of Petroleum Exploration and Development) | Qiquan Ran | Yongle Hu (Research Inst. Petr. Expl/Dev)
- Document ID
- Society of Petroleum Engineers
- International Oil and Gas Conference and Exhibition in China, 8-10 June, Beijing, China
- Publication Date
- Document Type
- Conference Paper
- 2010. Society of Petroleum Engineers
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Natural gas of volcanic gas reservoirs in China is rich in resources, and its exploration and development is great potential, but the study of the volcanic gas reservoir is a brand new field, there are a lot of difficulties in this study field. Due to the key problem of describing the formation framework of the volcanic gas reservoir hierarchically, this paper break the study method of sedimentary reservoir, take XS 21 block volcanic gas reservoir in XS Gas Field, north Songliao Basin as the example, use outcrop??core?? logging??seismic data and so on, according to the idea of "the control of magma source??, present the "Volcanic edifice -
volcanic facies- effective accumulating and filtrating body?? volcanic formation hierarchical describing plan. Stressly, illustrate the Volcanic edifice identify and classify idea of confirm magma source-confirm surface-confirm body, and expound the concrete way to confirm volcanic crater by seismic section??seismic attribution and microtectonics, confirm surface of the volcanic edifice by outcrop??logging and seismic data, confirm body by 3D seismics. Though this idea and way, we identify and dissect the volcanic edifices in XS 21 block, and describe them quantitatively. This study is the base of the volcanic reservoir description and prediction, at the same time, it create a new way to study the volcanic reservoir more scientific than before.
The study level of volcanic gas reservoir is low at home and abroad now, with several large-scale volcanic gas reservoir have been found in the basins in eastern and western China in recent years, the volcanic gas reservoir has become a hot of gas exploration and development, and the study on the volcanic gas reservoir is being carried out gradually.
As the volcanic rocks were formed by magma eruption, there is some essential difference between the volcanic and sedimentary reservoir, such as reservoir causes, reservoir characteristics, reservoir distribution and so on, the targeted research ideas and method must be established for the study on the volcanic gas reservoir.
Describe the Formation Framework of the Volcanic Gas Reservoir hierarchically
It is essential to establish the stratigraphic framework of the volcanic reservoir hierarchically and describe them accurately. In this paper, through outcrops, logging, seismic and so on, from the perspective of the causes, take the "magma source control" ideology as a guide, proposed the "volcanic edifice - volcanic facies - an effective accumulating and filtrating body" formation classification program. Its key idea is that the identification and characterization of the volcanic edifice is carried out according to the idea of "magma source control". The paper takes XS21 block volcanic gas reservoir in Daqing XS field as example, highlights how to " confirm the source -confirm the surface - confirm body" with volcanic edifices, discusses how to confirm the source by the "conventional seismic profile + attribute + micro-structure", confirm the surface through "outcrop+logging+seismic ", confirm the volcanic body by 3-D seismics.
|File Size||3 MB||Number of Pages||7|