随着地质认识的逐步加深和勘探技术手段的进步，东海陆架盆地西湖凹陷平北斜坡带的勘探领域逐步从构造油气藏转向岩性油气藏。通过系统分析平北斜坡带海陆过渡型沉积体系的层序构成样式、砂体展布特征和油气藏发育模式，指出平北斜坡带存在断裂陡坡型、对向断阶型、反向断阶型和同向断阶型4种层序地层发育样式，对应发育断裂陡坡型潮控三角洲潮道砂岩油气藏、对向断阶型潮控三角洲前缘潮滩砂岩油气藏、反向断阶型河控三角洲前缘水道砂岩油气藏和同向断阶型河控三角洲前缘水道砂岩油气藏4种类型。结合砂体展布规律和油气藏成藏模式预测，对平北斜坡带不同区带岩性油气藏的形成条件和分布规律进行总结，并指出团结亭区断裂陡坡型潮控三角洲潮道砂岩油气藏和孔雀亭区同向断阶型河控三角洲前缘水道砂岩油气藏是该区岩性油气藏勘探重点领域。在该岩性油气藏发育模式指导下，近期针对宝云亭低隆与反向断阶带控制下的宁波19区岩性圈闭钻探取得重大突破。

With the deepening geological knowledge and the advancing exploration techniques, the exploration in Pingbei slope belt, Xihu sag of the East China Sea Shelf Basin, is shifting from structural reservoirs to lithologic reservoirs. According to the systematic analysis of transitional deposits, Pingbei slope belt is believed having four sequence stratigraphic styles, i.e., fault-slope, opposite fault terrace, antithetic fault terrace, and concordant fault terrace, which correspond to four types of sandstone reservoirs (fault-slope tide-dominated delta tidal channel, opposite fault terrace tide-dominated delta front tidal flat, antithetic fault terrace river-dominated delta front channel, and concordant fault terrace river-dominated delta front channel). Based on the sand body distribution and hydrocarbon accumulation models predicted, the formation conditions and distribution rules of lithologic reservoirs in different plays of Pingbei slope belt were identified. It is finally indicated that the sandstone reservoir of fault-slope tide-dominated delta tidal channel in Tuanjieting area and the sandstone of concordant fault terrace river-dominated delta front channel in Qongqueting area are primary exploration targets. Following the model of lithologic reservoirs, significant breakthrough has been made during drilling lithologic traps in Block Ningbo 19 controlled by Baoyunting low uplift and the antithetic fault terrace belt.