Article

Petroleum Geology & Experiment

, 37:15

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

A new viewpoint about the relationship between carbonate content and acidolysis hydrocarbon

  • Jun YangAffiliated withState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of TechnologyWuxi Research Institute of Petroleum Geology, SINOPEC
  • , Zhongmin ShenAffiliated withState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology
  • , Guojian WangAffiliated withWuxi Research Institute of Petroleum Geology, SINOPEC
  • , Tongjin ChengAffiliated withWuxi Research Institute of Petroleum Geology, SINOPEC
  • , Li LuAffiliated withWuxi Research Institute of Petroleum Geology, SINOPEC

Abstract

Using unary linear regression, the relationship between carbonate content and acidolysis hydrocarbon in a well was investigated, which was different in wells with long production history, dry wells or wells with short production history. The gradient in the mudstone and related coefficient were greater than that in the sandstone in the wells with long production history, but the reverse was true in the dry wells or the wells with short production history. Then the reasons for the characteristics were analyzed from the carbonate mineral formation and the different lithology’ s adsorption property. According to the characteristics, a new method was developed for hydrocarbon prediction in exploration wells and the re-examination of old wells. This method was fast and with low cost, and could effectively improve the success rate of new and old wells re-examination.

Key words:

carbonate content acidolysis hydrocarbon hydrocarbon prediction old wells re-examination Linnan-Qianguantun Oilfield Huimin Sag

井中岩屑碳酸盐含量与酸解烃关系新认识