|Table of Contents|

Characteristics of Yanchang Formation Reservoirs and Its Influence Factors in Ansai Oilfield(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2005年第04期
Page:
49-52
Research Field:
Publishing date:

Info

Title:
Characteristics of Yanchang Formation Reservoirs and Its Influence Factors in Ansai Oilfield
Author(s):
ZHAO Hong1; DANG Ben1; DANG Yong-chao 2; YAO Wei-ping3
1.School of Earth Sciences and Resources Management, Chang’ an University, Xi’ an 710054, China; 2.No.1 Oil Producing Plant, Changqing Oilfield Branch Company, Yan’ an 716000, Shaanxi, China; 3.Changqing Division, China Petroleum Logging, Xi’ an 710201, China
Keywords:
petrology characteristics;  physical property;  diagenesis;  Yanchang Formation;  Ansai Oilfield;  Ordos Basin
PACS:
618.130.2;TE122.2
DOI:
-
Abstract:
By analyzing the data of drilling cores, costing thin sections as well as physical property, the petrology characteris- tics, characteristics of pore and permeability and the porosity types are studied and the influences factors are also analyzed a- bout Chang 2 and Chang 6 oil-bearing beds in the Ansai Oilfield. The result indicates that they both have the characteristics of petrology of lower mineral maturity and high stuctrue maturity, but Chang 2 is better than Chang 6 in mineral maturity. The former has the porosity types of carbonate dissolution porosity-feldspar dissolution porosity-primal grain porosity while the later has the porosity types of feldspar dissolution porosity-primal grain porosity-laumontite dissolution porosity. The physical property represent that Chang 2 is middle pore and low permeability, Chang 6 is middle pore and very low permea- bility. Sedimentry environment, petrology composition and radius, composition and amount, and the diagenesis are all the factors that influence the reservoirs.

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Last Update: 1900-01-01