近钻头地质导向钻井技术在张3-2HF井的应用  

Application of near bit geosteering drilling technology in well Zhang-3-2HF

作　　者：贺庆[1] 徐宁蔚[1] 

机构地区：[1]中国石化华东分公司石油工程技术研究院,江苏南京210031

出　　处：《油气藏评价与开发》2013年第3期50-53,共4页Petroleum Reservoir Evaluation and Development

摘　　要：张家垛油田地下构造复杂，地层产状不确定性大且油层薄，倾角大，给井眼轨迹控制造成极大困难，采用常规随钻测井技术LWD测量盲区大，不能及时发现油层变化，致使大斜度井达不到理想效果。近钻头地质导向系统能够测量钻头电阻率、方位电阻率、方位自然伽马三条地质曲线及井斜、工具面两个工程参数，并且测量零长都在2-3m范围内。近钻头电阻率可探测钻头以下0．7m范围，测量盲区小，真正实现了实时地质导向。近钻头地质导向钻井技术在张3-2HF井应用中取得了良好效果，为今后开发类似复杂油气藏提供了经验。Zhangjiaduo oilfield has complex subsurface structure, great uncertainty of production status, thin oil reservoir and large dip angle which brings great difficulties to control the well track. The measuring blind area is large while using conventional LWD technology. Because of this, oil reservoir changes cannot be found in time so that the high inclination wells cannot achieve the ideal effects. Near bit geosteering system can measure three geologic curves of hit resistivity, azimuthal resistivity and azimuthal natural gamma ray, and two engineering parameters of deviation and tool face. All measured zero lengths are within 2-3 meters. Near bit re- sistivity can detect the range of 0.7 meters under the bit with small measuring blind area and realize the real time geosteering. This technology applies well in well Zhang-3-2HF and provides a strong support for the development of similar complex oil reservoirs.

关 键 词：近钻头 地质导向 大斜度井 张家垛 

分 类 号：TE271[石油与天然气工程—油气井工程]