Oil & Gas Geology ›› 2001, Vol. 22 ›› Issue (3): 238-239,244.doi: 10.11743/ogg20010310

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THE REASON OF RESERVOIR BLOCKAGE IN CO2 SWALLOWING-SPITTING TEST

Qian Siping1, Du Peimin1, Qiao Baolin1, Zhou Xuhuang1, Zhang Xiuqiong1, You Xiaomiao2, Mo Bing1   

  1. 1. Research Institute of Exploration and Development, Zhongyuan Oilfield Company, Puyang, Henan;
    2. Department of Science and Technology, Zhongyuan Oilfield Company, Puyang, Henan
  • Received:2001-04-15 Online:2001-09-25 Published:2012-01-16

Abstract:

In the test of CO2 swallowing spitting made in Zhongyuan Oilfields,a new problem of reservoir blockage near wellbore area has arisen.The test result of Wen 65-84 Well in Zhongyuan Oilfields suggests that unknown mud like matter and inorgamic matter CaCO3 could not cause the reservoir blockage,the dialysis of heavy organic materials (paraffin,bitumen)caused by CO2 injection and the drop dwon of temperature is the real reason of the reservoir blockage.

Key words: CO2, swallowing spitting test, heavy organic matter, oil reservoir blockage,Zhongyuan Oilfields

CLC Number: