Research And Application On Optimal And Fast Drilling Technique Of Horizontal Well In The Deep Layer Of Liaohe Buried Hill

In recent years according to the exploration and development of deep zones in Liaohe Oilfield,hydrocarbon resources have been found in buried hills,especially the hydrocarbon resources in deep buried hills of Xinglongtai high hazard area are quite abundant.However,this reservoir belongs to high hazard areas during the process of drilling,and there are some technological problems in this area.It's hard to control the well track.Pipe-sticking accidents are very frequent.The fatigue failure of drilling tools may exist frequently.It is hard to protect the mud property under the conditions of high temperature and high pressure.It is hard to protect the reservoir.The screw is easy to lose effectiveness.In this paper the general geology of buried hill reservoir has been researched.According to the reservoir quality and rock quality of buried hill reservoir,the technological problems of implementing the optimized and fast drilling have been researched systematically.According to the technological problems,the bore frame and well diagram of horizontal wells have been designed optimally.Based on the actual situations of buried hill,the technological problems of horizontal well track controlling have been analyzed in detail,and drilling tools,drilling parameters and drilling tool assembly have been directly designed optimally and researched.To solve the problems of well track controlling of horizontal well,the first kick-off section,the second kick-off section,angle holding section and horizontal section controlling technology have been systematically studied,and two well track controlling projects have been illustrated.By researching and designing the construction parameters of horizontal optimal and fast drilling,Xing gu 7 block in buried hills have been site conducted and the application effects have been evaluated.