应用井壁取心分资料评价萨中开发区高台子油层剩余油分布规律.pdf

Journal of Oil and Gas Technology 石油天然气学报, 2017, 39(4), 111-119 Published Online August 2017 in Hans. /journal/jogt /10.12677/jogt.2017.394044 Evaluation of Residual Oil Distribution Rule in Gaotaizi Oil Layer of Sazhong Development Zone Based on Sidewall Coring Data Analysis Dehua Ma, Jinhang Zhang No. 1 Geologic Logging Company of Daqing Drilling Engineering Company, Daqing Heilongjiang th th th Received: Apr. 12 , 2017; accepted: Jul. 6 , 2017; published: Aug. 15 , 2017 Abstract Gaotaizi oil layer of Sazhong Development Zone in Sa’ertu Oilfield of Daqing was put into produc- tion in 1982. The comprehensive water cut was 93.7%. The difference of oil layers, long injec- tor-producer space and long production intervals induced poor producing degree of effective re- servoirs and low producing degree of thin and bottom oil layers. In order to improve the produc- ing degree and developmental effect of the reservoir, and find out a suitable well pattern for re- servoirs at late developmental stage with high water cut, the microscopic formation mechanism of remaining oil was studied, and the reservoirs were quantitatively evaluated by using pyrolysis of rocks from the sidewall coring, gas chromatography of saturated hydrocarbon and fluorescence microscopic image analysis, and the remaining oil distribution status and rules in Gaotaizi Reser- voir of Sazhong Development Zone were summarized. The method for evaluating remaining oil in adjustment wells with logging technology is formed by improving the fine evaluation of water flooding degree in thick layers and thin-poor layers. Some measures are proposed for tapping the potential of remaining oi