大庆石油地质与开发

2018, v.37;No.185(01) 88-93

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大庆长垣东部P油层第一口跨断层水平井设计与实践
DESIGN AND PRACTICE OF THE FIRST ACROSS-FAUIT HORIZONTAL WELL IN OIL RESERVOIR P IN EAST DAQING PLACANTICLINE

王剑
WANG Jian

摘要(Abstract):

针对大庆长垣东部P油层剩余未动用储量断层发育多、断块零散破碎且面积小、主力层单一等特点,在优选水平井部署区块的基础上,优化设计了一口跨断层水平井。实践表明:在进行水平井地质设计时,首先要做好水平井区的精细构造解释,明确水平井轨迹方向上的构造变化及断层位置、断距大小、延伸方向、倾斜角度等要素;其次保证砂岩模型与储层预测结果具有较高精度,这是跨断层水平井地质设计的关键;最后由于地下条件复杂多变,具有不可预测性,在井轨迹设计过程中,要对可能出现的问题提前做好预案,保障钻井的顺利实施。该水平井的成功设计与钻探,为复杂断块油藏未动用储量的高效开发提供了新的思路和方向。
In view of the characteristics of well-developed faults,scattered,broken and small size fault blocks,single key reservoir and so on for the remained undeveloped reserves in Reservoir P of East Daqing Placanticline,on the basis of the well-selected horizontal-well block,one across-fault horizontal well was optimized and designed.The practice shows that when conducting the geological design of the horizontal well,the fine structural interpretation of the well block should be first well done to make sure the structural change and fault location,throw size,extended direction,dip and other factors in the direction of the horizontal well trajectory; and then the insurance of the pretty higher precision for the sandstone model and reservoir predicted results is the key to the geological design of the across-fault horizontal well; at last,due to the complexity and changes of the geological conditions,the prediction is rather difficult,in the process of the well trajectory design,for the possible problems,the plan ahead of the time should be well done to ensure the smooth implementation of the drilling. The successful design and drilling of the horizontal well have provided the new thinking and direction of the high-efficiency development of the undeveloped reserves of the complex fault-block oil reservoir.

关键词(KeyWords): 长垣东部;跨断层水平井;优化设计;井轨迹;潜力分析
East Placanticline;across-fault horizontal well;optimized design;well trajectory;potential analysis

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金“张性断裂交汇部位油气运聚机理及有利类型预测”(41602164)

作者(Author): 王剑
WANG Jian

DOI: 10.19597/J.ISSN.1000-3754.201706018

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