新疆石油地质

新疆石油地质 ›› 2016, Vol. 37 ›› Issue (zk(English) ): 115-118.

• OIL AND GAS GEOLOGY ABROAD • 上一篇    

Genesis of Inclined Water-Oil Contact in Nahr Umr Reservoir, Rumaila Oilfield

ZHOU Jiasheng1,2, XIE Jingbin2, LIN Jian3   

  1. 1. China National Oil, Gas Exploration, Development Corporation, Beijing 100034, China;
    2. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
    3. East China Design Branch, China Petroleum Engineering Construction Corporation, Qingdao, Shandong 266071, China
  • 出版日期:2017-01-01 发布日期:2021-05-24
  • 作者简介:ZHOU Jiasheng,E-mail:slenderzhou@126.com

Genesis of Inclined Water-Oil Contact in Nahr Umr Reservoir, Rumaila Oilfield

ZHOU Jiasheng1,2, XIE Jingbin2, LIN Jian3   

  1. 1. China National Oil, Gas Exploration, Development Corporation, Beijing 100034, China;
    2. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
    3. East China Design Branch, China Petroleum Engineering Construction Corporation, Qingdao, Shandong 266071, China
  • Online:2017-01-01 Published:2021-05-24
  • About author:ZHOU Jiasheng,E-mail:slenderzhou@126.com

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摘要： To understand the genesis of inclined water-oil contact (WOC) in Nahr Umr clastic reservoir of Albian stage in Rumaila oilfield and improve the accuracy of oil and gas reserves estimation and rationality of development plan and adjustment, four aspects are discussed including formation water discharge, inclination degree of water-oil contact, response characteristics of oil and water pressure gradient and regional pressure variation by analyzing the data of well logging, wireline formation pressure and regional geology, based on the summaries of different causes of inclined WOCs. It is considered that hydrodynamism is the main reason for the inclination of WOC in clastic reservoir of Albian Nahr Umr formation and the hydrodynamic force is sourced from the surface water supply in Teros-Zagros thrust-fault fold belt in the northeastern part of the oilfield.

关键词: Iraq, Rumaila oilfield, clastic reservoir, Albian stage, inclined water-oil contact, hydrodynamism

Abstract: To understand the genesis of inclined water-oil contact (WOC) in Nahr Umr clastic reservoir of Albian stage in Rumaila oilfield and improve the accuracy of oil and gas reserves estimation and rationality of development plan and adjustment, four aspects are discussed including formation water discharge, inclination degree of water-oil contact, response characteristics of oil and water pressure gradient and regional pressure variation by analyzing the data of well logging, wireline formation pressure and regional geology, based on the summaries of different causes of inclined WOCs. It is considered that hydrodynamism is the main reason for the inclination of WOC in clastic reservoir of Albian Nahr Umr formation and the hydrodynamic force is sourced from the surface water supply in Teros-Zagros thrust-fault fold belt in the northeastern part of the oilfield.

Key words: Iraq, Rumaila oilfield, clastic reservoir, Albian stage, inclined water-oil contact, hydrodynamism