Dynamic Accumulation of the Quaternary Shale Biogas in Sanhu Area of the Qaidam Basin, China

Zeyu Shao, Shijie He, Lili Hou, Yuchao Wang, Cong Tian, Xiaoxue Liu, Yuru Zhou, Mianzhu Hao and Caihua Lin
Additional contact information
Zeyu Shao: Exploration and Development Institute of Qinghai Oilfield Company, PetroChina, Dunhuang 736202, China
Shijie He: State Key Laboratory of Petroleum Resources, Prospecting China University of Petroleum, Beijing 102249, China
Lili Hou: Exploration and Development Institute of Qinghai Oilfield Company, PetroChina, Dunhuang 736202, China
Yuchao Wang: State Key Laboratory of Petroleum Resources, Prospecting China University of Petroleum, Beijing 102249, China
Cong Tian: Exploration and Development Institute of Qinghai Oilfield Company, PetroChina, Dunhuang 736202, China
Xiaoxue Liu: State Key Laboratory of Petroleum Resources, Prospecting China University of Petroleum, Beijing 102249, China
Yuru Zhou: State Key Laboratory of Petroleum Resources, Prospecting China University of Petroleum, Beijing 102249, China
Mianzhu Hao: State Key Laboratory of Petroleum Resources, Prospecting China University of Petroleum, Beijing 102249, China
Caihua Lin: State Key Laboratory of Petroleum Resources, Prospecting China University of Petroleum, Beijing 102249, China

Energies, 2022, vol. 15, issue 13, 1-20

Abstract: Biogas resources in the Sanhu area of the Qaidam Basin have great potential, but there are few studies on biogas from shale, especially on the accumulation conditions of shale biogas. The study of biogas accumulation conditions of quaternary shale in the Sanhu area is of great significance to the theory of biogas accumulation and the guidance of exploration and development. This paper takes Quaternary shale in the Sanhu area as the research object. It is analyzed from multiple perspectives of shale hydrocarbon generation conditions, reservoir conditions, as well as hydrodynamic and structural conditions. Through the experiments of soluble organic carbon analysis and porosity and permeability analysis, the accumulation conditions of shale biogas reservoirs are clarified. The results show that the quaternary shale has a high soluble organic carbon content and high salinity formation water, which is conducive to late methane biochemical generation. Quaternary shale has the characteristics of high porosity and low permeability, mainly developing intergranular pores and intragranular pores. The large pore volume and specific surface area provide a lot of storage space for free gas and adsorbed gas, and the reservoir conditions are good. Under the structural characteristics of high in the south and low in the north and the action of formation hydrodynamics, biogas migrated from the south and deep to the north of the basin. The north slope is the main biogas-rich zone. On the whole, the quaternary shale in the Sanhu area has the characteristics of continuous hydrocarbon generation and dynamic accumulation, which has huge resource potential and exploration and development value.

Keywords: Qaidam Basin; quaternary; shale; biogas; dynamic accumulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/13/4593/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/13/4593/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:13:p:4593-:d:846395

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().