[1]马英文 刘小刚.抗高温无固相储层保护钻井液体系[J].石油钻采工艺,2018,40(6):726-729.[doi:10.13639/j.odpt.2018.06.010]
 MA Yingwen,LIU Xiaogang.A high-temperature & solid-free drilling fluid system with the property of reservoir protection[J].Oil Drilling & Production Technology,2018,40(6):726-729.[doi:10.13639/j.odpt.2018.06.010]
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抗高温无固相储层保护钻井液体系
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《石油钻采工艺》[ISSN:1000-7393/CN:13-1072/TE]

卷:
40卷
期数:
2018年6期
页码:
726-729
栏目:
钻井完井
出版日期:
2018-11-20

文章信息/Info

Title:
A high-temperature & solid-free drilling fluid system with the property of reservoir protection
文章编号:
1000 – 7393( 2018 )06 – 0726– 04
作者:
马英文 刘小刚
中海石油(中国)有限公司天津分公司
Author(s):
MA Yingwen LIU Xiaogang
CNOOC Tianjin Company, Tianjin 300452, China
关键词:
钻井液无固相高温裂缝性储层储层保护太古界
Keywords:
drilling fluid clay free high temperature fractured reservoir reservoir protection Archean
分类号:
TE254
DOI:
10.13639/j.odpt.2018.06.010
文献标志码:
B
摘要:
针对渤中19-6 油田深层裂缝性储层环境温度高、漏失风险大等难题,利用抗高温流型调节剂、抗高温护胶剂、聚胺抑制剂及甲酸钾加重剂等材料,构建了一套抗高温无固相储层保护钻井液体系。室内评价结果表明,自制的关键处理剂抗高温护胶剂、抗高温流型调节剂的抗温能力均达到200 ℃,且具有自动破胶性能;老化后的滤液与煤油的界面张力为2.61 mN/m, 表现出良好的抑制性,油藏条件下渗透率恢复值达90%以上,储层保护效果良好。该体系在渤中19-6 油田成功应用8 口预探井, 其中渤中19-6-7 井钻进垂深5 508 m,井底温度达190 ℃。该体系可用于太古界高温深井的勘探开发。
Abstract:
The deep-seated fractured reservoirs in Bozhong 19-6 Oilfield are faced with high temperature, high risk of lost circulation, and other difficulties. To solve these problems, a high-temperature clay free drilling fluid system with the property of reservoir protection was developed by using high-temperature pattern adjusting agent, high-temperature colloid protecting additive, polyamine inhibitor and potassium formate weighting agent. Laboratory evaluation results show that the self-made key treating chemicals (i.e., high-temperature colloid protecting additive and high-temperature pattern adjusting agent) can be resistant to the temperature of 200 ℃, and they have the property of automatic gel breaking. The interfacial tension between the aged filtrate and the kerosene is 2.61 mN/m, indicating good inhibition. The permeability recovery under the condition of oil reservoir is over 90%, which indicates that the reservoir protection effect is good. This drilling fluid system has been successfully applied in 8 wildcat wells of Bozhong 19-6 Oilfield, among which Well Bozhong 19-6-7 has vertical depth of 5 508 m and bottom hole temperature of 190 ℃. In conclusion, this drilling system is applicable to the exploration and development of Archean high-temperature deep wells.

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更新日期/Last Update: 2019-04-10