In chapter three , in order to simulate the actual drilling fluid column pressure and to supply the extreme high pressure drilling circulating fluid for the device , the high pressure circulating fluid simulating system has been designed based on the experience of drilling fluid circulating system in the wellside . to purify the drilling fluid , the high pressure desander has been designed 第三章為模擬實際鉆井的液柱壓力,并為整個模擬鉆井裝置提供超高壓循環(huán)鉆井液,在借鑒了鉆井現(xiàn)場的鉆井液循環(huán)系統(tǒng)經(jīng)驗的基礎(chǔ)上分析研究了鉆井液高壓循環(huán)系統(tǒng),并配套設(shè)計了高壓除砂器,以達到凈化該系統(tǒng)中鉆井液的要求。
On the basis of analyzing the rock mechanics , the bit working circumstance and property in the bottom hole of 6000m deep well , and making use of the former equipment such as a derrick , platforms etc , the paper demonstrates that the research and design of the mechanical device have been established including the high pressure simulating well bore , the high pressure connector between the static well bore and the rotating drill pipe , the high pressure simulating system of circulating fluid and the high pressure desander etc . the produce , control and dynamic analysis of the bottom hole four - dimensional pressure ( over burden , confined , pore and column pressure ) have been studied 本文在對井底巖石的受力狀態(tài)以及鉆頭的工作環(huán)境和特性加以分析的基礎(chǔ)上,借助原有的井架、平臺等設(shè)備,研究設(shè)計了模擬6000米井底壓力壞境的高壓模擬井筒、鉆柱高壓轉(zhuǎn)聯(lián)器、鉆井液高壓模擬系統(tǒng)以及高壓除砂器等機械裝置,并研究了井底四維模擬壓力(上覆壓、圍壓、孔隙壓和液柱壓)的產(chǎn)生、控制及其控制的建模與仿真,從而實現(xiàn)井深至6000米的四維井底壓力環(huán)境的模擬。