The reservoir development in Daqing Sabei transitional zone is now in the high water cut period, and the production declines rapidly. Under such situations, the composite heat carrier huff and puff in-house experiments are carried out to achieve a better reservoir performance. Through the evaluation of the recovery rate, the water cut and the production gas-oil ratio, the feasibility of the composite heat carrier huff and puff in Sabei transitional zone is explored. It is shown that the composite heat carrier huff and puff enjoys a very good performance, which depends highly on the soak time and the huff and puff cycles. The over-time or too-shorttime well soak will both result in a poor performance. Under the same conditions, the water cut and the production gas-oil ratio decline with the increase of the soak time. When the soak time goes over 150 s, the water cut and the production gas-oil ratio will increase. With the increase of the huff and puff cycle, the oil recovery, the water cut and the gas-oil ratio increase. The optimal soak time for the Daqing Sabei transitional zone reservoir is 150 s, with the highest recovery and the lowest production gas-oil ratio and the huff and puff cycles should be three or four periods and three cycles for the best result.
ZHAO Mingguo
,
CHA Xingchen
,
JIA Huimin
,
YANG Hongyu
. Adaptability of the Composite Heat Carrier Huff and Puff in Daqing Sabei Transitional Zone[J]. Science & Technology Review, 2014
, 32(27)
: 66
-69
.
DOI: 10.3981/j.issn.1000-7857.2014.27.011
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