[1]馬英文 劉小剛.抗高溫無固相儲層保護鉆井液體系[J].石油鉆采工藝,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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抗高溫無固相儲層保護鉆井液體系
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《石油鉆采工藝》[ISSN:1000-7393/CN:13-1072/TE]

卷:
40卷
期數:
2018年6期
頁碼:
726-729
欄目:
鉆井完井
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
文章編號:
1000 – 7393( 2018 )06 – 0726– 04
作者:
馬英文 劉小剛
中海石油(中國)有限公司天津分公司
Author(s):
MA Yingwen LIU Xiaogang
CNOOC Tianjin Company, Tianjin 300452, China
關鍵詞:
鉆井液無固相高溫裂縫性儲層儲層保護太古界
Keywords:
drilling fluid clay free high temperature fractured reservoir reservoir protection Archean
分類號:
TE254
DOI:
10.13639/j.odpt.2018.06.010
文獻標志碼:
B
摘要:
針對渤中19-6 油田深層裂縫性儲層環境溫度高、漏失風險大等難題,利用抗高溫流型調節劑、抗高溫護膠劑、聚胺抑制劑及甲酸鉀加重劑等材料,構建了一套抗高溫無固相儲層保護鉆井液體系。室內評價結果表明,自制的關鍵處理劑抗高溫護膠劑、抗高溫流型調節劑的抗溫能力均達到200 ℃,且具有自動破膠性能;老化后的濾液與煤油的界面張力為2.61 mN/m, 表現出良好的抑制性,油藏條件下滲透率恢復值達90%以上,儲層保護效果良好。該體系在渤中19-6 油田成功應用8 口預探井, 其中渤中19-6-7 井鉆進垂深5 508 m,井底溫度達190 ℃。該體系可用于太古界高溫深井的勘探開發。
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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