CAJ | 학술논문

水平井作为油气藏开发的有效手段在世界范围内得到迅速而广泛地推广.水平井钻井技术在我国经过几十年的发展已逐渐成熟,然而水平井试修井技术还相当薄弱,多局限于现场的实践经验.为解决目前国内水平井试修研究中实验装置欠缺、研究基础薄弱的状况,以相似性原理为依据,以川渝气区磨溪气田水平井井筒为模拟对象,结合连续油管在川渝气区水平井的运用现状,研制出水平井井筒连续油管沉砂携带与孔眼分流室内模拟实验装置.经测试,该装置能模拟φ38.1 mm连续油管在φ139 mm套管的水平井井筒内替液、冲砂、携砂以及液体在水平井段孔眼中的分流、排液等方面的研究工作.
수평정작위유기장개발적유효수단재세계범위내득도신속이엄범지추엄.수평정찬정기술재아국경과궤십년적발전이축점성숙,연이수평정시수정기술환상당박약,다국한우현장적실천경험.위해결목전국내수평정시수연구중실험장치흠결、연구기출박약적상황,이상사성원리위의거,이천투기구마계기전수평정정통위모의대상,결합련속유관재천투기구수평정적운용현상,연제출수평정정통련속유관침사휴대여공안분류실내모의실험장치.경측시,해장치능모의φ38.1 mm련속유관재φ139 mm투관적수평정정통내체액、충사、휴사이급액체재수평정단공안중적분류、배액등방면적연구공작.
As an effective means for oil and gas reservoir development, horizontal well technology has been applied rapidly and widely all over the world. In China, the horizontal well drilling is becoming mature over the last decades. However, the technology for workover operations in horizontal wells is still under development, most relying on field practice. Because of the low research level and for lack of experimental facilities for horizontal well workover in China, a set of simulating facilities were developed to study sand carrying and fluid diverting during sand flushing operation in horizontal wells by coiled tubing with the similarity principle as a theoretical basis, the horizontal wellbores at Moxi gasfield in the Sichuan Basin as the simulating ob-jects, and the current status of application of coiled tubing in horizontal wells in the Sichuan Basin as a reference. The devel-oped experimental facilities are proved to be able to simulate the fluid displacement, sand washing, sand carrying, fluid divert-ing and discharging when operating with 38. 1 mm-in-diameter coiled tubing in 139 mm-in-diameter cased horizontal wellbore.