We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
准噶尔盆地盆 1 井西凹陷及周缘二叠系风城组 油气地质特征与勘探潜力 .
- Authors
王江涛; 刘龙松; 江梦雅; 陈海龙; 卞保力; 刘海磊; 王学勇; 朱永才; 牟立伟
- Abstract
Fengcheng Formation has the feature of low exploration degree in Western Well Pen-1 Sag, and a new well has broken the historical record of single well high production in the basin. But the geological character⁃ istics of oil and gas are unclear, and the resource types and exploration potential are unknown, which restrict the next oil and gas exploration and development in this block. The geological characteristics and exploration poten⁃ tial of Fengcheng Formation are discussed by means of structural recovery, sedimentary evolution, well-seismic combination and analogical analysis.P1f1, P1f2 and P1f3 in the Northeast ring of the sag are overlaid on the Carbon⁃ iferous layer by layer, and P1f3 in the high part is thinned by weathering and denudation, with a large stratigraph⁃ ic pitch-out background. Fengcheng Formation develops a regressive fan delta – lake sedimentary system, which is positive cyclic deposition. It is predicted that conglomerate, dolomitic sandstone and dolomitic mud⁃ stone reservoirs are developed successively from the high part to the sag. The gravel in the high position con⁃ glomerate reservoir is mainly medium- acid volcanic rock, the composition of sand is mainly rock debris, and the dissolution pores are developed in large number, which belongs to the reservoir with ultra-low porosity and ultra-low permeability. The oil and gas are condensate oil and gas with high maturity, and the interface between oil, gas and water is not obvious. The whole gas reservoir is quasi-continuous, and it is divided into multiple fault block gas reservoirs by fault blocks. Based on the analysis of accumulation, the oil and gas reservoir form⁃ ing model of Fengcheng Formation is established. It is predicted that the resources of conventional gas reser⁃ voir, tight gas and shale gas in Fengcheng Formation are 1 250×108 m³, 5 020×108 m³ and 6 230×108 m3 re⁃ spectively, and the natural gas exploration potential is huge.
- Subjects
PETROLEUM prospecting; GAS reservoirs; GRABENS (Geology); OIL shales; SHALE gas; NATURAL gas prospecting
- Publication
Natural Gas Geoscience, 2023, Vol 34, Issue 5, p794
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2023.01.002