石油钻采工艺
石油鑽採工藝
석유찬채공예
OIL DRILLING & PRODUCTION TECHNOLOGY
2014年
1期
77-78,84
,共3页
聚合物驱%偏心注聚器%现场应用
聚閤物驅%偏心註聚器%現場應用
취합물구%편심주취기%현장응용
polymer lfooding%polymer eccentric distributor%ifeld application
为提高偏心注聚器的投捞成功率，综合考虑上、下两种导向方式的优缺点，开展了中导向偏心注聚器及配套工具的研究。该注聚器在常规偏心配水器结构基础上，将导向体上移至偏心工作筒中部，并可依据不同驱替介质分注要求更换根据不同功能设计的堵塞器，同时通过改变降压槽的规格来改变节流压差，减少能量及压力损失。室内实验表明，采用该偏心注聚器的分注管柱的一次投捞成功率达到98%，节流元件在70 m3/d流量范围内，最大节流压差可达到2.5 MPa，对聚合物溶液黏损率小于9.2%。现场应用表明，应用该注聚器的分注管柱一次投捞成功率95.6%，较原有技术提高6.9%，2~3层分注井投捞、验封和流量调配有效用时1.5 d左右，较原有技术提高40%。该偏心注聚器的性能可完全满足二、三类油层聚合物驱分注的要求。
為提高偏心註聚器的投撈成功率，綜閤攷慮上、下兩種導嚮方式的優缺點，開展瞭中導嚮偏心註聚器及配套工具的研究。該註聚器在常規偏心配水器結構基礎上，將導嚮體上移至偏心工作筒中部，併可依據不同驅替介質分註要求更換根據不同功能設計的堵塞器，同時通過改變降壓槽的規格來改變節流壓差，減少能量及壓力損失。室內實驗錶明，採用該偏心註聚器的分註管柱的一次投撈成功率達到98%，節流元件在70 m3/d流量範圍內，最大節流壓差可達到2.5 MPa，對聚閤物溶液黏損率小于9.2%。現場應用錶明，應用該註聚器的分註管柱一次投撈成功率95.6%，較原有技術提高6.9%，2~3層分註井投撈、驗封和流量調配有效用時1.5 d左右，較原有技術提高40%。該偏心註聚器的性能可完全滿足二、三類油層聚閤物驅分註的要求。
위제고편심주취기적투로성공솔，종합고필상、하량충도향방식적우결점，개전료중도향편심주취기급배투공구적연구。해주취기재상규편심배수기결구기출상，장도향체상이지편심공작통중부，병가의거불동구체개질분주요구경환근거불동공능설계적도새기，동시통과개변강압조적규격래개변절류압차，감소능량급압력손실。실내실험표명，채용해편심주취기적분주관주적일차투로성공솔체도98%，절류원건재70 m3/d류량범위내，최대절류압차가체도2.5 MPa，대취합물용액점손솔소우9.2%。현장응용표명，응용해주취기적분주관주일차투로성공솔95.6%，교원유기술제고6.9%，2~3층분주정투로、험봉화류량조배유효용시1.5 d좌우，교원유기술제고40%。해편심주취기적성능가완전만족이、삼류유층취합물구분주적요구。
In order to improve the dropping and ifshing success rate of eccentric polymer distributor, mid-guild polymer injec-tor and matched tools were developed by considering the merits and demerits of upper director and bottom director. On the basis of conventional eccentric water distribution structure, the director was moved to the middle of regular eccentric work guide tube. The plug designed for special usages can replace according to the requirement of separate injection for different displacement medium, besides, the throttle pressure difference change with changing of buck slots speciifcations to reduce the pressure and energy loss. Indoor experiments show that: the initial dropping and ifshing success rate of tubing string with this polymer eccentric distributor can be 98%, and the max throttle pressure difference can up to 2.5 MPa with lfow rate 70 m3/d, besides, the viscosity loss rate is less than 9.2%. Field application results show that one dropping and ifshing success rate of separate injection tube with the polymer ec-centric distributor is 95.6%, compared with the original technique to improve 6.9%. The effectively time-consuming of dropping&ifshing, inspection sealing and lfow deploy is nearly1.5 d for 2 to 3 layers injection wells and about improved by 40% compared with the original technology. The performance of this mid-director polymer distributor can meet requires of polymer separate injection technology in thin&poor reservoirs.
