西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 178-182.

• 博导论评 • Previous Articles    

The Sand Production Critical Flow Test Technology of Gas Well in Moderate Cemented Formation

DENG Jin-gen 1 WANG Li-hua1, LI Ping 1 CAO Yan-feng 2 FENG Yong-cun 1
  

  1. 1. School of Petroleum Engineering, China University of Petroleum, Changping, Beijing 102249, China;
    2. Research Center, CNOOC, Dongcheng, Beijing 100027, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

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Abstract: Sand production is of great harm to the moderate cemented formation in gas reservoir，so it is necessary to determine the sand production critical flow. In order to overcome the shortcomings in traditional sand production

critical flow determining methods，such as high cost of field test and low computational accuracy of theoretical calculation，this paper shows that test equipments and test methods determine the sand production critical flow
for gas well. The lab simulation test for determining the sand production critical flow in open hole completion is carried out. We measure the gas flow rate and sand production rate under different drawdown pressure. Finally, the sand production critical flow of gas well was determined. The test technology for determining the sand production critical flow of gas well is based on the critical flow rate back stepping strata of back-derive critical sand production drawdown pressure and productivity. This test method has been successfully used in a gas field of South China Sea. The result shows the advancement and reliability of this test method.

Key words:

moderate cementing, sandstone gas reservoir, sand production, critical flow, simulation test__

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