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Sand Dike(Sand Injection) Type of Reservoir and Oil-pool—A Case Study of Sapu Interlayer in the Western of Changyuan Area, Songliao Basin, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2020年第03期
Page:
285-296
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Sand Dike(Sand Injection) Type of Reservoir and Oil-pool—A Case Study of Sapu Interlayer in the Western of Changyuan Area, Songliao Basin, China
Author(s):
ZHONG Jian-hua1; 2;  WANG Yong-zhuo3;  NI Liang-tian2;  GAO Chun-wen4;  ZHOU Yong-bing3;  MAO Cui5;  FAN Xiao-dong3;  LIU Guo-zhi3;  CHEN Zhi-peng3;  SONG Guan-xian2;  WANG Rui3;  HUANG Liang3;  LIU Qiang3;  FAN Yu-jiao2;  REN Kai-xuan2
(1. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China; 2. School of Geosciences, China University of Petroleum, Qingdao 266580, Shandong, China; 3. Exploration and Development Research Institute of Daqing Oilfield Company, PetroChina, Daqing 163712, Heilongjiang, China; 4. Exploration Department of Daqing Oilfield Company, PetroChina, Daqing 163453, Heilongjiang, China; 5. School of Earth Sciences, Northeast Petroleum University, Daqing 163318, Heilongjiang, China)
Keywords:
sand dike;  sand injection;  fault;  seismic reflection;  oil-pool;  west slope;  Sapu interlayer;  Songliao Basin
PACS:
P618.13
DOI:
10.19814/j.jese.2019.12003
Abstract:
Sapu interlayer in the western of Songliao Basin, is a set of mudstone stratum that locates at the bottom of Sa'ertu oil layer and the top of Putaohua oil layer; a number of high yield wells recently are successfully obtained. The numerous sand dikes(sand injections)and faults develop in Sapu interlayer by fine analysis of core, well logging and seismic data. The oil-pool is closely related to this set of sand injections and faults, and sand dike type of reservoir or oil-pool forms. The sand dike type of reservoir and oil-pool has the following characteristics: ① there is no stable horizon, lateral continuity is very poor, and it is difficult to compare in the horizontal direction; ② there is no definite shape, and the majority is amorphous mass; ③ there is an intrusive contact relationship between the top and bottom or side edge of sand dikes and surrounding rocks; ④ the sand dikes mostly contain floating tearing mud and gravel; ⑤ there are faults on both sides or one side of the seismic profile; ⑥ the seismic reflection axis is disordered, the interruption, expanding, bending and other phenomena are common, and the plane slices are of sub-circular or star-shaped heterogeneous high impedance clusters; ⑦ liquefaction flow has a good differentiation effect, which can make sand injection a good reservoir; ⑧ sand dike type of oil-pool generally has own independent oil-water and pressure systems, and there is no uniform oil-water interface in the region.

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Last Update: 2020-05-27