CAJ | 학술논문

四川盆地侏罗系沙溪庙组储层低孔低渗,使用常规改造手段很难获得工业油气流.为此,在G16H井首次开展了电缆带易钻式桥塞分段射孔加砂压裂联作试验,桥塞通过8 mm电缆下入,在水平段通过压裂车进行泵送,到达预定位置后地面给电信号进行坐封,同时桥塞与射孔枪丢手,上提射孔枪依次进行多簇射孔作业,每段分3~4簇射孔,坐封桥塞、射孔、加砂压裂作业最快可在12 h内完成.G16H井共分10段施工,压后利用?50.8 mm连续油管成功钻磨?114.3 mm套管用桥塞9只,钻磨完单只桥塞平均用时仅60 min左右.该井放喷测试获得了24.7 t/d的高产工业油气流.易钻桥塞射孔联作加砂压裂技术的成功实施,初步探索出针对该低孔低渗区块的一套有效储层改造技术手段,为下一步侏罗系沙溪庙组储层高效开发积累了宝贵的现场经验.
사천분지주라계사계묘조저층저공저삼,사용상규개조수단흔난획득공업유기류.위차,재G16H정수차개전료전람대역찬식교새분단사공가사압렬련작시험,교새통과8 mm전람하입,재수평단통과압렬차진행빙송,도체예정위치후지면급전신호진행좌봉,동시교새여사공창주수,상제사공창의차진행다족사공작업,매단분3~4족사공,좌봉교새、사공、가사압렬작업최쾌가재12 h내완성.G16H정공분10단시공,압후이용?50.8 mm련속유관성공찬마?114.3 mm투관용교새9지,찬마완단지교새평균용시부60 min좌우.해정방분측시획득료24.7 t/d적고산공업유기류.역찬교새사공련작가사압렬기술적성공실시,초보탐색출침대해저공저삼구괴적일투유효저층개조기술수단,위하일보주라계사계묘조저층고효개발적루료보귀적현장경험.
@@@@the?industrial?oil-gas?flow?can?not?be?obtained?by?conventional?stimulation?treatment?in?Shaximiao?Group?Jurassic?System?since the characteristic of low porosity and low permeability. The clustering perforation and sand fracturing of cable drillable bridge plug combination?test?was?first?implemented?in?Well?G16H.?The?plug?is?downloading?through?the?8mm?cable?and?pumping?through?the?frac-turing truck in horizontal stage. Electrical signals are sent for setting from ground when the plug at the predetermined position, and then the plug and perforating gun releasing to conduct multiple clusters of perforating with the perforating gun up in succession. Every stage has 3-4 perforations, plug setting, perforation and sand fracturing can be completed in 12 h at the soonest. There are ten stages in Well G16H, The coiled tubing of 50.8 mm is successfully drilling and grinding ? 114.3 mm casing with 9 plugs after fracturing, and the aver-age?time?consuming?of?single?bridge?plug?is?only?about?60?min.?24.7?t/d?industrial?oil-gas?flow?is?obtained?after?the?discharge?test?in?this?well. The successful implementation of drillable bridge plug clustering perforation and sand fracturing in this horizontal well preliminar-ily?explores?a?suit?of?effective?reservoir?reconstruction?technology?which?is?specific?for?this?low?porosity?and?low?permeability?block,?and?accumulates?precious?field?experience?for?further?efficient?development?of?reservoir?stratum?in?Shaximiao?Group?Jurassic?System.