石油钻采工艺
石油鑽採工藝
석유찬채공예
OIL DRILLING & PRODUCTION TECHNOLOGY
2014年
3期
45-47
,共3页
张勇%褚奇%陈勇%苏俊霖%蒲晓林
張勇%褚奇%陳勇%囌俊霖%蒲曉林
장용%저기%진용%소준림%포효림
钻井液%荧光%防塌%封堵%流变性
鑽井液%熒光%防塌%封堵%流變性
찬정액%형광%방탑%봉도%류변성
drilling lfuid%lfuorescence%anti-collapse%plugging%rheology
针对现有防塌封堵剂沥青类荧光级别高,石蜡类、聚合醇类易起泡、易大幅增大钻井液黏度,不能满足防塌钻井液需要的缺点,应用二异氰酸酯、乙酸乙酯和多羟基化合物合成出了一种新型封堵剂JA。应用荧光分光光度计和高温高压封堵仪研究了JA的荧光性和封堵性,评价了JA钻井液的流变性能。结果表明:JA荧光强度与蒸馏水近似;120℃、3.5 MPa条件下JA能在微裂缝和孔隙处快速封堵,形成致密封堵层;3%JA加入钻井液中不增黏不增稠,对钻井液体系流变性基本无影响。
針對現有防塌封堵劑瀝青類熒光級彆高,石蠟類、聚閤醇類易起泡、易大幅增大鑽井液黏度,不能滿足防塌鑽井液需要的缺點,應用二異氰痠酯、乙痠乙酯和多羥基化閤物閤成齣瞭一種新型封堵劑JA。應用熒光分光光度計和高溫高壓封堵儀研究瞭JA的熒光性和封堵性,評價瞭JA鑽井液的流變性能。結果錶明:JA熒光彊度與蒸餾水近似;120℃、3.5 MPa條件下JA能在微裂縫和孔隙處快速封堵,形成緻密封堵層;3%JA加入鑽井液中不增黏不增稠,對鑽井液體繫流變性基本無影響。
침대현유방탑봉도제력청류형광급별고,석사류、취합순류역기포、역대폭증대찬정액점도,불능만족방탑찬정액수요적결점,응용이이청산지、을산을지화다간기화합물합성출료일충신형봉도제JA。응용형광분광광도계화고온고압봉도의연구료JA적형광성화봉도성,평개료JA찬정액적류변성능。결과표명:JA형광강도여증류수근사;120℃、3.5 MPa조건하JA능재미렬봉화공극처쾌속봉도,형성치밀봉도층;3%JA가입찬정액중불증점불증주,대찬정액체계류변성기본무영향。
In view of the drawbacks of present anti-collapse plugging agents,such as kerite whose lfuorescence level is high, and parafifn and polyalcohol which are easy to foam and substantially increase the viscosity of drilling lfuid, which cannot satisfy the re-quirement of anti-collapse drilling lfuid, a new kind of plugging agent JA is invited with diisocyanate, ethyl acetate and polyhydroxy compounds to composite . Fluorescence spectrophotometer and HTHP plugging spectrometer were used to study the lfuorescence and plugging properties of JA and evaluated the rheological properties of JA drilling lfuid. The results showed that the lfuorescence intensity of JA was low, which was only 30 a.u;under the condition of 120℃and 3.5 MPa, JA could rapidly plug microifssures and porous place and create a dense plugging layer. When 3%JA was added to drilling lfuid, it would not thicken or viscosify the drilling lfuid, posing nearly no effect on the rheological property of drilling lfuid system.