The Application Of Light Hydrocarbo Nanalysis In The Oil-gas Exploration And Development

Based on the datum of logging and well logging, combing with the information of pressure coring and core information, this paper analyzes and studies the application of light hydrocarbon analysis in distinguishing oil-water bed and evaluation method of water flooded layer by using recent theory and method of petroleum geology, organic geochemistry.The method of light hydrocarbon analysis is established and improved according to doing a mount of basic experiment. The automatic qualitative analysis of light hydrocarbon components is achieved adopting CRT technology. This paper studies the reservoir hydrocarbon master control element and the relationship to oil-water bed completely and systematically, and gets and optimizes the evaluation parameters of light hydrocarbon creatively. The light hydrocarbon recognition method of reservoir aquosity in the light of biodegradation strong and weak is created by taking the source rock target and hydrocarbons alteration into reservoir evaluation, by which the distinguish rate of oil-water bed is raised. The aquosity distinguish board to Putaohua Reservoir in Gulong Sag, Putaohua Reservoir in Sanzhao Sag, Fuyang Reservoir in east and west of Daqing Placanticline and Nantun Formation of Beir-Wuerxun Sag in Hailaer Basin are established.In this paper, a particularity is existed. In the past, there is no research about the application of light hydrocarbon analysis technology to identify water/oil layer. And this technology used to identify water/oil layer is a domestic emerging technologies in recent years, so it has no mature applications. There are many research needed to storm a strategic pass, for instance, sampling materials, methods of light hydrocarbon, automatic component characterization, obtaining and optimization of evaluation parameters, evaluation method of oil/water layer. Based on the actual productive demand of oilfield, this paper does some researches to breach the roadblock, at the same time, gradually improve and perfect in the process of test applications, and the research is closely integrated with production. In the past two years, there are 137 wells that are applicated in light hydrocarbon analysis, including the prospecting wells and reservoir evaluation wells, and 74 oil wells are tested, including 154 layers, in it, 140 layers are tested right, so precision ratio is 90.9%. Over the past two years, it shows that the light hydrocarbon analysis technology in the identification of water / oil layers has a clear technological advantage, as a result, the popularization and application of this technology can greatly improve the interpretation and evaluation level of the logging, that is to say, it has very broad application prospects.