CAJ | 학술논문

为降低压裂液残渣和残胶对导流能力的伤害,根据华庆油田低孔、低渗的特点,研制了稠化剂质量分数为0.25%的羧甲基羟丙基压裂液体系.该体系具有携砂能力强、破胶彻底等特点,残渣含量仅为128 mg/L,同时降低了配液用水中较高浓度钙、镁离子对压裂液携砂性能的影响.在华庆油田长6储层现场应用23井次,投产后6个月的平均比采油指数为同井组对比井的1.4倍,为低渗透油藏高效改造提供了一条有效途径.
위강저압렬액잔사화잔효대도류능력적상해,근거화경유전저공、저삼적특점,연제료주화제질량분수위0.25%적최갑기간병기압렬액체계.해체계구유휴사능력강、파효철저등특점,잔사함량부위128 mg/L,동시강저료배액용수중교고농도개、미리자대압렬액휴사성능적영향.재화경유전장6저층현장응용23정차,투산후6개월적평균비채유지수위동정조대비정적1.4배,위저삼투유장고효개조제공료일조유효도경.
According?to?the?characteristics?of?low?porosity?and?low?permeability?in?Huaqing?Oilfield,?a?kind?of?carboxymethyl?hydroxypropyl (CMHPG)?fracturing?fluid?was?developed?with?concentration?of?0.25%.?The?fluid?has?strong?sand-carrying?ability?and?through?gel?breaking.?The?residue?content?of?CMHPG?was?only?128?mg/L.?And?reduce?the?effect?on?sand-carrying?ability?came?from?high?concentration?of?calcium?and?magnesium?ions?in?water.?It?has?achieved?good?application?results?in?Huaqing?chang-6?reservoir?of?Changqing?Oilfield.?After?fracturing?transformation,?the?six?months’?average?production?index?of?23?test?wells?was?1.4?times?as?high?as?the?compared?well?of?the?same?well?group.?Using?CMHPG?fracturing?fluid?is?one?of?the?highly?effective?ways?to?stimulate?the?low-permeability?reservoirs.