CAJ | 학술논문

为进一步提高缝网压裂现场实施的有效性,首先分析了以往采用蜡球实现缝内封堵的不足之处,认为主要在于影响泵效、封堵强度不够和蜡球溶解致裂缝导流能力降低.然后通过筛选对比多种暂堵剂的性能,并结合室内支撑剂性能及导流能力实验,提出选用大粒径支撑剂作为缝内封堵剂.此外将端部脱砂压裂作为缝网压裂的实施技术应用到现场中,现场实施了9口井16层.压后分析显示2种方法都有效地提升了缝内净压力.缝网压裂试验井效果显著,与邻井相比,投产前3个月的日产油量分别提高了101.2%、103.8%、133.3%.该技术为低渗/特低渗储层的有效动用提供了有效的手段.
위진일보제고봉망압렬현장실시적유효성,수선분석료이왕채용사구실현봉내봉도적불족지처,인위주요재우영향빙효、봉도강도불구화사구용해치렬봉도류능력강저.연후통과사선대비다충잠도제적성능,병결합실내지탱제성능급도류능력실험,제출선용대립경지탱제작위봉내봉도제.차외장단부탈사압렬작위봉망압렬적실시기술응용도현장중,현장실시료9구정16층.압후분석현시2충방법도유효지제승료봉내정압력.봉망압렬시험정효과현저,여린정상비,투산전3개월적일산유량분별제고료101.2%、103.8%、133.3%.해기술위저삼/특저삼저층적유효동용제공료유효적수단.
To improve the effectiveness of network fracturing, this paper details the disadvantages of the wax balls as blocking material,?and?they?are?reducing?pumping?efficiency,?not?having?enough?strength?and?reducing?the?fracture?conductivity.?Based?on?the?proppant conductivity test, the blocking fracturing using large size proppant was recommended, and it has been applied in 15 layers of 9?wells.?In?addition,?TSO?fracturing?also?has?been?field?tested?in?1?layer.?The?analyses?after?fracturing?show?that?both?the?two?methods?improve?the?fracture?net?pressure?effectively.?The?oil?production?of?first?three?months?is?101.2%,?103.8%,?133.3%?higher?than?that?of?adjacent?wells,?so?the?technology?is?one?of?effective?ways?in?which?make?low/extra?low?permeability?be?developed?economically.