低固相超高温水基钻井液研究及应用

黄维安; 王在明; 胡中志; 邱正松; 谢彬强; 毛惠

doi:10.3969/j.issn.1001-5620.2015.02.001

低固相超高温水基钻井液研究及应用

doi: 10.3969/j.issn.1001-5620.2015.02.001

1.
中国石油大学(华东)石油工程学院, 山东青岛
2. 冀东油田钻采研究院, 河北唐山
3. 长江大学石油工程学院, 湖北荆州

基金项目: 国家自然科学基金项目(51374233);山东省自然科学基金项目(ZR2013EEM032);中国博士后基金面上资助(2014M551986)。

详细信息

作者简介:
黄维安,1976年生,2007年获中国石油大学(华东)油气井工程专业博士学位,现为中国石油大学(华东)副教授,主要从事泊气井化学工程领域研究。地址:山东省青岛市经济技术开发区长江西路66号中国石泊大学(华东)石泊工程学院;邮政编码266580;电话(0532)86981190;E-mail:masterhuang1997@163.com。

中图分类号: TE254.3
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出版历程
- 收稿日期: 2014-12-10
- 刊出日期: 2015-03-31

Study and Application of Low Solids Ultra-high Temperature Water Base Drilling Fluid

College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China

摘要

摘要: 冀东油田商堡构造深部潜山储层温度高、压力低、裂缝发育,为满足保护储层和井下携岩的需要,基于开发的聚合物增和剂SDKP以及对抗高温降滤失剂、泊溶性封堵剂、润滑剂、高温保护剂和防水锁剂的优选,优化出一套低膨润土低固相超高温水基钻井液。室内评价结果表明,1%SDKP溶液在165℃老化16 h后,表观掌声度保持率仍可达20%,表明SDKP的耐温性能好;SD-101和SD-201复配可显著降低1肌膨润土基荣的滤失量,泊溶性封堵剂HQ-I0可显著降低高温高压滤失量;该钻井液抗温达235吧,在200℃下的塑性黎度达到15 mPa·S,满足携岩需要抗污染能力强,能抗10%NaCl、2%CaCl₂,10%劣质土污染,抑制性好,膨胀率降低率达78%,页岩回收率从8.24%提高到84.45%,储层损害小。在探井南堡3-82井五开井眼的现场应用表明,该钻井液在220℃井底温度下的流变参数基本稳定.API滤失量不变,搪岩性好,顺利钻达井深6037 m完钻,自喷求产,产液量为43.20 m³/d。证明该钻液可满足现场高温低压储层的钻井需要。
- 超高温钻井液 /
- 低膨润土低固相钻井液 /
- 扰温增教剂 /
- 防止地层损害
Abstract: A low clay content and low solids ultra-high temperature water base drilling fluid was engineered using optimized polymer viscosifier SDKP, high temperature filter loss reducer, oil-soluble plugging agent, lubricant, high temperature protective agent and water block preventer, based on an analysis of the characteristics of the reservoir in Nanpu, Jidong. Laboratory experiments showed that after 16 hours of aging at 165℃, 1% SDKP water solution still retained 20% of its original viscosity. A combination of two filter loss reducers, SD-101 and SD-201, remarkably reduce the filter loss of a 1.0% bentonite slurry. HQ-10, an oil-soluble plugging agent, can remarkably reduce the HTHP filter loss of drilling fluid. This drilling fluid remained stable at 235℃. At 200℃, the plastic viscosity was 15 mPa.s, satisfying the needs for carrying drilled cuttings. The drilling fluid maintained good rheology even contaminated with 10% NaCl, 2% CaCl₂, or 10% inert clays. In inhibition test, the percent reduction in core swelling was 78%, and the percent recovery of cores increased from 8.24% to 84.45%. The application of this drilling fluid in the exploration well Nanpu3-82 showed that, at 220℃ (bottom hole temperature), the rheology of the fluid was stable the API filter loss remained unchanged, good carrying capacity of the fluid was realized. Well Nanpu3-82 was successfully drilled to 6,037 m, and had a liquid production of 43.20 m³/d.
- High temperature resistant /
- Drilling fluid /
- Ultra-high temperature /
- Low clay content drilling fluid

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