CAJ | 학술논문

随着深井、超深井钻井数量的增加，对井控技术的要求也越来越高。通常，在压井过程中采用传统的立压控制法和套压控制法，由于压力传递的延迟和计算不准等原因，给井控带来了诸多不便。在前人研究的基础上，根据气液两相流理论，建立了1套精确套压计算模型。针对实例井，采用传统套压计算模型和精确套压计算模型分别进行计算。在压井过程中，传统套压计算模型计算的最大套压出现滞后，且数值偏大；精确套压计算模型计算的值则与实际值较吻合。研究表明，精确套压计算模型更符合压井实际情况，对现场压井施工有指导意义。
수착심정、초심정찬정수량적증가，대정공기술적요구야월래월고。통상，재압정과정중채용전통적립압공제법화투압공제법，유우압력전체적연지화계산불준등원인，급정공대래료제다불편。재전인연구적기출상，근거기액량상류이론，건립료1투정학투압계산모형。침대실례정，채용전통투압계산모형화정학투압계산모형분별진행계산。재압정과정중，전통투압계산모형계산적최대투압출현체후，차수치편대；정학투압계산모형계산적치칙여실제치교문합。연구표명，정학투압계산모형경부합압정실제정황，대현장압정시공유지도의의。
With the growth in deep drilling and ultra deep drilling,well control techniques have be-come increasingly demanding.Due to the pressure transmission delay and inaccurate calculation, the traditional standpipe and casing pressure control methods have brought much inconvenience to well control.On the basis of previous studies and based on the theory of gas-liquid two phase flow,an accurate casing pressure calculation model is established.The calculation results showed that the maximal casing pressure delayed and it was higher than actual casing pressure during kill-ing by traditional model,the accurate model could fit well with actual casing pressure.Studies have shown that accurate casing pressure calculation model was closer to the actual situation, which was instructive to well killing on site.