Yangtze University

Jingzhou Modern Petroleum Technology Development Co. Ltd

Pingtian Fan

Lei Zhang

Weichu Yu

Ying Zhang

Wenming Shu

Fei Ding

Hui Zhao

Wenjie Xia

Huan Yang

Aibin Wu

Dongkui Zhou

Rui Li

Zhenhu Lv

Jianglu Jing

Zhengdong Lei

Chaoyi She

Baocheng Wu

Shuaishuai Li

Disclosed is a method for determining three-dimensional in-situ stress based on displacement measurement of borehole wall, including the following steps: pumping the prefluid and the sand-carrying fluid into the target interval, and injecting the biological oil displacement agent into the target interval in sequence; pumping temporary plugging agent into the target layer to implement crack plugging diverting; pumping the sand-carrying liquid into the target interval, and injecting the biological oil displacement agent into the target interval. The beneficial effect of the technical scheme proposed in this disclosure is: by injecting oil displacement agent to fracturing fluid, the temporary plugging diverting fracturing is integrated constructed with enhanced oil recovery, at the same time, it can overcome the incomplete removal of temporary plugging agent and the water lock effect of fracturing fluid caused by diverting fracturing.

Volumetric fracturing method of temporarily plugging and diverting through functional slick water with oil displacement agent injected simultaneously

An enhanced oil recovery method includes: screening out implementation well that meet the requirements of a preset standard; selecting the target interval that can be used for enhanced oil recovery in the implementation well; obtaining the reservoir parameters and perforation parameters of the target interval, so as to divide the target interval into several groups of swallowing and exhaling segments, injecting the infection liquid containing and simmer the well for a period of time; and after the well simmering, the oil-water mixture replaced by the injection fluid is produced from each exhaling segment.

Enhanced oil recovery method with single well huff and puff and inter-segment oil displacement after horizontal well fracturing

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Yanan, China

Pingtian Fan