松辽盆地北部致密油钻井技术研究

Study on Tight Oil Drilling Technology in Northern Songliao Basin

松辽盆地北部白垩系青山口组~泉头组具有发育丰富的致密油资源,覆盖整个大庆外围,总资源量超过10×10^(8)t。致密油储层具有纵向不集中、横向不连续、单体规模小、物性变化大等非均质特性,使用常规技术难以有效开发。自2013年以来,大庆油田通过持续开展钻井设计优化、进一步完善提速工具、推进钻井液体系优选、完善致密油水平井综合固井技术、建立区块施工模板等工作,形成了以水平井工厂化施工为技术核心的致密油钻井技术。为大庆油田致密油储量的经济有效动用提供了强有力的技术支撑。

The Cretaceous Qingshankou~Quantou Formation in the north of Songliao Basin is rich in tight oil resources,covering the periphery of Daqing,with a total resource of more than 10×10^(8) t.Tight oil reservoir is characterized by vertical non concentration,horizontal discontinuity,small monomer scale and large physical property change,which is difficult to be effectively developed by conventional technology.Since 2013,Daqing Oilfield has formed a tight oil drilling technology with industrialized construction of horizontal wells as the technical core through continuous optimization of drilling design,further improvement of speed-up tools,optimization of drilling fluid system,improvement of comprehensive cementing technology of tight oil horizontal wells and establishment of block construction template.It provides a strong technical guarantee for the economic and effective production of tight oil reserves in Daqing Oilfield.