| 摘要: |
| 为了进一步认识井斜角对补偿中子测井纵向分辨率的影响,利用蒙特卡罗模拟方法,分析了在不同井斜角情 况下测井仪器的纵向几何因子和地层灵敏度,并模拟了在薄地层中的仪器响应。通过研究得到了不同井斜角下补 偿中子测井的纵向几何因子,以及用于考察斜井和水平井空间探测特性的地层灵敏度。结果表明:虽然补偿中子测 井本身不具有方向性,但当仪器贴壁放置时实际上主要反映靠近仪器一侧的地层;在不同井斜角情况下测井仪器的 纵向分辨率不同,随着井斜角的增加,纵向分辨率逐渐增强。 |
| 关键词: 补偿中子测井 井斜角 蒙特卡罗模拟 几何因子 地层灵敏度 纵向分辨率 |
| DOI： |
| 分类号: |
| 基金项目:国家“863 ”高技术研究发展计划项目(2006AA060105) |
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| Investigation characteristics of compensated neutron log in deviated and horizontal well |
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YU Hua-wei1,SUN Jian-meng1,WANG Min1,LAI Fu-qiang1,YANG Jin-zhou2
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(1. College of Geo-Resources and Information in China University of Petroleum, Dongying 257061，China;2. Drilling Technology Research Institute,Skengli Oilfield Company,Dongying 257000, China)
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| Abstract: |
| In order to further understand the effect of deviation angle on the vertical resolution of the compensated neutron log，Monte Carlo simulation method was applied to study the vertical geometrical factors and formation sensitivity under different deviation angle conditions, furthermore the responses of the tool were simulated in laminations. The vertical geometrical factor and the formation sensitivity which can analyze the three-dimensional investigation characteristics in the inclined wells and the horizontal wells, were obtained by using simulation data. The results show that the compensated neutron log response is not principally direction-oriented，but actually pad-type sided when the tool eccentered. The vertical resolutions are different with the different deviation angle. And the vertical resolution increases with the deviation angle degree increasing. |
| Key words: compensated neutron log deviation angle Monte Carlo simulation geometric factor formation sensitivity vertical resolution |
