CAJ | 학술논문

气体钻井时地层出水可导致水敏性泥页岩坍塌失稳，为了解决这一问题，进行了超吸水材料用于井眼干燥的研究。通过室内试验对超吸水材料的吸水能力、吸水速度、抗盐能力、抗温能力、抗压能力、pH值适应性、改性方法、井筒通过能力、回收和重复利用可行性进行了评价。结果表明：超吸水材料具有吸水能力强、吸水速度快的特点；温度和压力对其吸水能力影响小；盐分对其吸水能力影响较大，但可以通过改性方法提高其耐盐性；超吸水材料吸水后可以顺利返至地面，可回收，但脱水困难，重复利用的可行性低。研究表明，超吸水材料应用于气体钻井井壁干燥在材料、工艺方面都具备可行性，可为气体钻井井壁干燥提供了新的思路和技术手段。
기체찬정시지층출수가도치수민성니혈암담탑실은，위료해결저일문제，진행료초흡수재료용우정안간조적연구。통과실내시험대초흡수재료적흡수능력、흡수속도、항염능력、항온능력、항압능력、pH치괄응성、개성방법、정통통과능력、회수화중복이용가행성진행료평개。결과표명：초흡수재료구유흡수능력강、흡수속도쾌적특점；온도화압력대기흡수능력영향소；염분대기흡수능력영향교대，단가이통과개성방법제고기내염성；초흡수재료흡수후가이순리반지지면，가회수，단탈수곤난，중복이용적가행성저。연구표명，초흡수재료응용우기체찬정정벽간조재재료、공예방면도구비가행성，가위기체찬정정벽간조제공료신적사로화기술수단。
In gas drilling ,formation water flow may lead to instability of water-sensitive mudstone and shale .To solve this problem ,the feasibility of applying super-absorbent polymer(SAP)to dry wellbore was investigated .A laboratory experiment was made to evaluate the absorption capacity ,absorption velocity , salt resistance ,temperature resistance ,compressive strength ,pH value adaptability ,modification methods , ability of passing through bit nozzle ,recycling and reuse of such materials .The results indicate that super-absorbent materials provide strong and fast water absorption ,the absorption capacity is less sensitive to temperature and pressure and highly sensitive to salt content ,w hich can be improved by modification meth-ods .The SAM can return to the surface successfully after absorbing water and then recycled .However , they can't be reused because of difficult dehydration .It is suggested that super-absorbent materials are fea-sible in both materials and technology for drying wellbore .This research provides new ideas and methods for wellbore drying in gas drilling .