大庆油田齐家区块致密油水平井钻井提速技术

ROP Improvement Technology for Tight Oil Horizontal Well in Qijia Block of Daqing Oilfield

摘要:

水平井技术是实现致密油开发的重要途径。自2013年开始，大庆油田在齐家、长垣等3个致密油区块开展了水平井井组开发先导性试验，其中齐家区块施工难度最大，针对该区块水平井水平段长、位移大的特点，及钻遇地层岩石可钻性差、三维扭方位难度大、机械钻速低、钻井周期长等主要技术难点，在分析地层特征的基础上，通过优化井身结构，井眼轨迹控制，优化三维井眼轨迹，开展个性化钻头、降摩减扭措施和配套工具的技术攻关及现场应用，初步形成了一套大庆油田齐家区块致密油水平井钻井提速技术，并取得了较好的应用效果，为大庆油田致密油长水平段水平井进一步提速及规模应用奠定了基础。

Abstract:

Horizontal drilling technology is an important way to realize the development of tight oil. The pilot tests of horizontal well group were carried out in Qijia and another two tight oil blocks since 2013. The construction in Qijia was the most difficult, where there were characteristics of long horizontal section and large horizontal displacement with technical difficulties of poor formation drillability, 3D adjusting azimuth, low ROP and long drilling cycle. Based on the analysis on geological characteristics, by optimizing casing program, controlling well trajectory, optimizing 3D well trajectory, making technological breakthrough in personalized bit, friction & torsion reducing methods and matching tools, and according to the field application effects, a set of ROP improving technology for tight oil horizontal well in Qijia block of Daching oilfield has been developed with good results, the foundation has been laid for the further ROP improvement and large-scale application of ROP improving technology for tight oil long horizontal well in Daqing oilfield.