Characteristics of salt rock and its relationship with lithologic reservoir in the Member 3 of Shahejie Formation of Paleogene in Puyang area, Henan Province
Gu Weicheng Zhao Qilei LǔYinghong Mo Wenli Zheng Junlin Shu Bin
1. Exploration and Development Research Institute, Zhongyuan Oilfield Company,Petrochina, Puyang 457001, Henan
2. Drilling Engineering Technology Research Institute, ZPEB, Puyang 457001, Henan
3.The NO.6 Oil Production Plant, Zhongyuan Oilfield Company,Petrochina ,Dongming 274511, Shandong
4.The NO.2 Oil Production Plant, Zhongyuan Oilfield Company,Petrochina ,Fanxian 457532, Henan
There are three sets of salt rocks from bottom to top in the Member 3 of Shahejie Formation of Paleogene in the central uplift belt and its vicinity in northern of Dongpu Depression. Each set of salt rocks consists of numerous salt rock rhymes that are composed of salt beds and mudstones. Thickness of the different and same rhythmic unit is very different in the various regions. Salt rocks have three major structures:primary tabular salt rock , secondary salt rock wall and post deforming salt rock. Because salt rocks are very dense with excellent sealing, the pressure and temperature of the underlying layers are so high that organic materials in the source rocks turns into oil and gas easily. Salt rocks in the high pressure and temperature are plastic and therefore are high-quality caprocks. Phase change of salt rock to sandstone and mudstone together with structural movement formed lithologic reservoirs relative to salt rocks. There are four kinds of reservoir traps in relation to salt rock distribution:sandstone pinching reservoir, lithologic-fault reservoir,fault-lithologic reservoir and fault -anticline reservoir.This paper discussed the distribution of three sets of salt rocks and their relation to oil and gas accumulation in the Member 3 of Shahejie Formation of Paleogene in Puyang area, Henan Province. It is significant for searching and exploiting the subtle reservoirs futhermore in this region.
About author: Gu Weicheng, born in 1949, was graduated from the Department of Petroleum Geology of East China Petroleum Institute. Now he is a senior engineer of Exploration and Development Research Institute of Zhongyuan Oilfield, and is engaged in exploration and development of oil and gas.
Cite this article:
. Characteristics of salt rock and its relationship with lithologic reservoir in the Member 3 of Shahejie Formation of Paleogene in Puyang area, Henan Province[J]. JOURNAL OF PALAEOGEOGRAPHY, 2005, 7(4): 529-534.
. Characteristics of salt rock and its relationship with lithologic reservoir in the Member 3 of Shahejie Formation of Paleogene in Puyang area, Henan Province[J]. JOPC, 2005, 7(4): 529-534.