The untabulated reservoir is composed of argillaceous siltstone, silty mudstone and calcareous siltstone with the dominance of oilstain in Lamadian Saertu Xingshugang oilfield.

• 喇萨杏油田的表外储集层是以油斑产状为主的泥质粉砂岩、粉砂质泥岩和含钙粉砂岩，与表内储集层属同一河流三角洲体系的沉积物。