Experimental Study Of Coring Tool And Mud System About Oil Shale Formation

With the growing shortage of oil resources ,people turn to a substitute for petroleum energy—oil shale. Through the development of oil shale to extract the shale oil. China is rich in oil shale resources, now full and reasonable use of oil shale resources has become more important. Oil shale is a rotten peat ,so, a range of issues about borehole instability,take core rate and take core high quality exist in the exploration. Increased core rate and to maintain borehole stability obtained is crucial to fully evaluate the oil shale.Paper based on Geological survey of this thesis project "Formation of new drilling equipment of difficult drilling apparatus and Technology" in the oil shale core drill and mining technology, by designing a new coring drill equipment and a new mud system to make oil shale exploration borehole not only stability but also the high rate of drilling, core quality, achieve better economic efficiency.Paper is divided into two parts, core drill equipment and mud system. Through theoretical analysis to experimental method to complete the design of core drilling and mud system. In the part of core drill ,reading and referring a large number of documents between home and abroad and designing a pitching drill press card single-action double barrel core drilling equipment. And through laboratory tests to improving and optimizing the core drilling equipment. In the mud system part, through reference the literature of the role of domestic shaleand mud theoretical analysis ,with the current environment situation designing a mud system of polyol slurry system. Through experimental method in the indoor to presented its best performance of the formulation and adoption of shale swelling and high temperature recovery test to evaluate it.Through lab experiment, the core drilling equipment and the mud system achieve the purpose.