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Diagenetic Facies and Reservoir Capability of p1x 1 Sandstone in Tabamiao Area of Ordos Basin(PDF)

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

Issue:
2006年第01期
Page:
32-36
Research Field:
Publishing date:

Info

Title:
Diagenetic Facies and Reservoir Capability of p1x 1 Sandstone in Tabamiao Area of Ordos Basin
Author(s):
WANG Dai-guo1; 2
1. Department of Geology, Northwest University, Xi’an 710069, Shaanxi, China; 2. Research Institute o fExploration and Exploitation, North China branch of SINOPEC, Zhengzhou 450006, Henan, China
Keywords:
Ordos Basin;  Tabamiao Area;  hydrocarbon content;  lithologic trap;  diagenesis;  pore evolution;  dia- genetic facies;  favorable area
PACS:
P618.130.21
DOI:
-
Abstract:
The Tabamiao Area grows the braided river facies in p1x1period, in which sandstone thickness is from ten to sixty meters, and distribution has the feature of the stronger heterogeny, the lateral continuity and stabili- ty. Exploration proved it is local and discontinuous for hydrocarbon content distribution of p1x1sandstone and the trap type belongs to the lithologic trap. According to the lab data of thin-section, cast thin-section, X-ray diffrac- tion and injection, p1x1sandstone is known in some hands of self-reproducing mineral type, diagenesis and diage- netic sequence, pore evoluting feature and growing controlled factor. And then analysis is carried out on the main combination type of cement favorably growing pore in relation to which affects reservoir capability of the sand- stone. The diagenetic facies of p1x1sandstone is sorted in terms of the cement combination type, which is analyzed on some sides of reservoir capability, pore growing situation, hydrocarbon content, and log reflection character from log hydrocarbon showings, testing and log data, so the favorable diagenetic facies of p1x1sandstone is found to forecast the favorable accumulation area of p1x1sandstone in the plane and offer the evidence of the proving p1x1 gas accumulation.

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Last Update: 2006-03-20