Quantitative Description of Internal Architecture in Point Bar of Meandering River

ZHOU  Xin-Mao, GAO  Xing-Jun, TIAN  Chang-Bing, WANG  Xin-Ming, CHEN  Jian-Yang, HAO  Ming-qiang, ZHOU  Ying

doi:10.11764/j.issn.1672-1926.2010.03.421

Natural Gas Geoscience >

2010 , Vol. 21 >Issue 3: 421 - 426

DOI: https://doi.org/10.11764/j.issn.1672-1926.2010.03.421

Quantitative Description of Internal Architecture in Point Bar of Meandering River

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1.Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
2.Exploration and Development Research Institute of Dagang Oilfield Company, Tianjin 300280,China

Received date: 2009-08-04

Revised date: 2010-01-06

Online published: 2010-06-10

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Abstract

The quantitative analysis of point-bar′s inner architecture is essentially computation of lateral mudstone′s attitude and lateral accretion body′s scale. Based on recognition criteria of lateral mudstone on log map, three computing methods are used to quantitatively describe the attitude and the scale. The methods are diplog, twin wells and the horizontal well. The diplog show the attitude directly. And the twin wells can provide the real inclination of mudstone with calculation on well′s data by work of sublayer top laping and angular transformation. The third method is based on the horizontal well, and the attitude is calculated by a formula composed of some horizontal well′s parameters, such as radius of well hole, the hole deviation angle, the stratum dip and the length of mudstone. The length can be obtained by analysis of GR log curve, which is very sensitive to the shale bulk volume. Based on the data of attitude and scale, the architecture elements of point-bar can be quantitatively described. On the analysis of relationship between lateral mudstone and remaining oil, then the enrich zone of remaining oil is forecasted and the corresponding development plan will be carried out.

Key words： Architecture element; Lateral mudstone attitude; Lateral body scale; Twin wells; Horizontal well; Remaining oil.

Cite this article

ZHOU Xin-Mao, GAO Xing-Jun, TIAN Chang-Bing, WANG Xin-Ming, CHEN Jian-Yang, HAO Ming-qiang, ZHOU Ying . Quantitative Description of Internal Architecture in Point Bar of Meandering River[J]. Natural Gas Geoscience, 2010 , 21(3) : 421 -426 . DOI: 10.11764/j.issn.1672-1926.2010.03.421

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