CN103484092A - 一种超低温胍胶压裂液 - Google Patents

一种超低温胍胶压裂液 Download PDF

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CN103484092A
CN103484092A CN201210194041.XA CN201210194041A CN103484092A CN 103484092 A CN103484092 A CN 103484092A CN 201210194041 A CN201210194041 A CN 201210194041A CN 103484092 A CN103484092 A CN 103484092A
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李彦林
刘炜
王瑛
孔丽娜
汪志臣
任家萍
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China Petroleum and Natural Gas Co Ltd
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Abstract

本发明涉及一种超低温胍胶压裂液,由0.3%—0.45%羟丙基胍尔胶、1—15%KCL、1—3%助排剂、0.5—2%破乳剂、0.5—2%%粘土稳定剂、0.1-0.5%杀菌剂、0.01—0.03%pH值调节剂、0.002—0.008%激活剂、交联剂0.1-0.3%、破胶剂0.04-0.1%、余量为水组成;本发明能够在很大程度上提高压裂液的使用效果,使压裂液在温度15℃—35℃低温条件下彻底破胶并返排。

Description

一种超低温胍胶压裂液
技术领域:
本发明涉及油田压裂技术领域,是一种超低温水基胍胶压裂液体系,特别是适应于15℃—35℃的原油储层进行压裂改造。
背景技术
在克拉玛依油田勘探过程中发现很多浅层油气藏,如乌尔禾的佳木禾组油藏、百口泉古16井区北断块石炭系储层及克拉玛依一中区克拉玛依组油藏等,储层平均孔隙度7%~25%,渗透率为0110×1023~3163×1023Lm2;油气藏埋藏深度450~1500m,地层温度15—35℃。随着开采的持续进行,储层能量降低,产量下降。为了提高产量,必须对储层进行压裂改造。要想取得良好的压裂效果,不仅要求压裂液具有良好的流变性、悬砂性、降滤失性,还必须具有良好的破胶化水性能,以提高压裂液的返排率,减少对储层的伤害。由于油气藏埋藏深度较浅、地层温度低,常用的过硫酸盐破胶剂分解温度≥45℃,因此常规的水基胍胶压裂液在低于35℃的油层中破胶水化比较困难。我院压裂研究所根据克拉玛依油气藏的储层特点,研制出了低温破胶压裂液,能在较低温度下彻底破胶、快速返排。目前该类型的压裂液已在本油田应用近50井次,使用本发明的低温破胶压裂液后,增油效果明显得到改善,经济效益显著。
专利CN101531892A公布一种超低温超级胍胶压裂液,该专利公布以过硫酸钾、亚硝酸钠、双氧水为核心的三元破胶体系。同本发明相比,其破胶体系比较复杂,不易推广使用,其次亚硝酸钠、双氧水为化学危险品,对人身及环境会产生一些危害,而本发明采用单一的氯化亚铜作为激活剂,亚铜被氧化成铜离子后,对人体及环境影响比较小,用量低为0.0004%,添加方便易于推广使用。因此本发明同专利CN101531892A相比更具有先进性。
发明内容
本发明的目的是提供一种适于油气藏温度低于35℃的低渗透油气藏压裂的,能够提高压后压裂液破胶液的返排率,提高增油效果的超低温胍胶压裂液。
本发明所述的超低温胍胶压裂液是以水为溶剂,通过添加不同比例的化学添加剂配制出的压裂液。各成分按重量百分比如下:
Figure BDA00001758487300021
羟丙基胍尔胶粉作为压裂液稠化剂,主要起增粘作用,最佳用量为0.3-0.4%;氯化钾为防膨剂,最佳用量根据油层条件进行选择;助排剂为氟碳链表面活性剂,最佳用量为1%;破乳剂为聚氧乙烯丙烯十八醇醚类,如本发明选用的PR—1破乳剂,由新疆克拉玛依市中太有限责任公司生产,最佳用量为0.5-2%;粘土稳定剂为季铵盐类防膨剂,本发明选用粘土稳定剂为XJHX-08,由新疆克拉玛依市新聚有限责任公司生产;杀菌剂为低碳醛类,如甲醛、戊二醛,最佳用量为0.03-0.08%;pH值调节剂为氢氧化钠,用量为0.01—0.03%;激活剂为氯化亚铜或氯化亚锡,本发明主要以氯化亚铜为主,最佳用量为0.002—0.008%%;交联剂为YGB有机硼交联剂,由新疆克拉玛依市采油工艺研究院生产,用量为0.1-0.3%;破胶剂为过硫酸铵,用量为0.04-0.1%。
本发明的主要特征为:
1、本发明的压裂液同现有专利技术配制的低温压裂液相比不同在于:激活剂使用方便、污染小。
2、本发明液体配制工艺简单,现场便于操作。
3、本发明提出的超低温胍胶压裂液体系具有良好的综合性能;
①、添加剂间具有良好的配伍性能,与地层流体也具有很好的配伍性;
②、具有良好的防膨效果,在未加粘土稳定剂的情况下,防膨率(针对粘土)可达70%;
③、破胶彻底,满足返排要求,破胶液粘度小于7mPa·s;
④、该压裂液体系满足15-35℃储层压裂施工要求。
附图说明
图1:T10269井施工曲线图。
具体实施方式
实施例1:
①15℃压裂液原液配方:0.3%HPGUR粉、10%KCL、0.5%XJHX-08、1%ZJ-07助排剂、0.3%KNF杀菌剂、1%PR-1、0.016%氢氧化钠、0.0004%gCuCL(氯化亚铜)。
②配制方法:取1000ml水置于1000ml容积的吴茵混调器中,加入100gKCL,搅拌溶解后加入3.0g羟丙基胍胶粉,搅拌2min溶解增粘,依次加入2ml XJHX-08、10ml ZJ-07助排剂、3ml KNF杀菌剂、10ml PR-1破乳剂、0.16g氢氧化钠+0.004g氯化亚铜,搅拌均匀,放置于1000ml烧杯中静置4小时,制成基液备用。
③交联液配方:2.5%YGB有机硼交联剂+2%过硫酸铵+0.1%氢氧化钠;取100ml水置于200ml容积的烧杯中,加入YGB有机硼交联剂2.5ml,加入过硫酸铵2g,搅拌均匀后再加入0.1g氢氧化钠,搅拌均匀制成交联液备用
④交联比:10:1
⑤压裂冻胶的制备:取基液100ml置于200ml容积烧杯中,加入10ml交联液,用玻璃棒搅拌,即可形成交联冻胶,交联时间为20s左右。在室温25℃下,使用RV-20型旋转粘度仪在170S-1剪切速率下,测得冻胶粘度变化如下:
超低温压裂液流变性能
Figure BDA00001758487300041
压裂液冻胶4小时15℃下破胶液粘度≤7mPa·s。
实施例2:
①35℃压裂液原液配方:0.4%HPGUR粉、10%KCL、0.5%XJHX-08、1%ZJ-07助排剂、0.3%KNF杀菌剂、1%PR-1、0.02%氢氧化钠、0.0005%gCuCL(氯化亚铜)。
②配制方法:取1000ml水置于1000ml容积的吴茵混调器中,加入100gKCL,搅拌溶解后加入4.0g羟丙基胍胶粉,搅拌2min溶解增粘,依次加入2ml XJHX-08、10ml ZJ-07助排剂、3ml KNF杀菌剂、10ml PR-1破乳剂、0.2g氢氧化钠+0.004g氯化亚铜,搅拌均匀,放置于1000ml烧杯中静置4小时,制成基液备用。
③交联液配方:2%YGB有机硼交联剂+1%过硫酸铵+0.03%氢氧化钠;取100ml水置于200ml容积的烧杯中,加入YGB有机硼交联剂2g,加入过硫酸铵1g,搅拌均匀后再加入0.03g氢氧化钠,搅拌均匀制成交联液备用
④交联比:10:1
⑤压裂冻胶的制备:取基液100ml置于200ml容积烧杯中,加入10ml交联液,用玻璃棒搅拌,即可形成交联冻胶,交联时间为20s左右。在室温25℃下,使用RV-20型旋转粘度仪在170S-1剪切速率下,测得冻胶粘度变化如下:
超低温压裂液流变性能
Figure BDA00001758487300051
压裂液冻胶4小时35℃下破胶液粘度≤5mPa·s。
实施例3:
T10269井(T2K1:738.5m-740.0m、743.5m-748.0m)属于克拉玛依组油藏克下组,位于克拉玛依市区以东15km,含油面积16.9km2,地质储量2058万吨。油藏夹持于克—乌断裂与北黑油山断裂之间,为一东南倾斜的单斜构造。主要含油层系岩性以砾岩、砂砾岩为主。表现为弱速敏、弱盐敏、中-强水敏。储层孔隙度平均为16.1%,渗透率平均为49×10-3μm2。为中孔—中低渗储层。克下组原始地层压力10.29MPa,油藏温度24.5°C,地层原油粘度7.2mPa.s。
采用常规压裂改造方式会造成有些薄层改造不好或完全没有改造的情况,所以为了尽量改造所有薄层,并减少作业次数以及对储层伤害,采用水力喷砂射孔压裂改造技术,这种工艺可以有效地进行自封隔对目的层进行压裂,并可一定程度上控制井筒附近裂缝起裂和延伸,容易产生主裂缝。
压裂液配方:
①25℃压裂液原液配方:
0.35%HPGUR粉+2%KCL+0.5%XJHX-08+1%ZJ-07助排剂+0.3%KNF杀菌剂+1%PR-1+0.016%氢氧化钠+0.0004%gCuCL(氯化亚铜)
②交联液配方:2.5YGB有机硼交联剂+2%过硫酸铵+0.01氢氧化钠;
施工曲线见附图1
压裂液破胶液情况记录

Claims (5)

1.一种超低温胍胶压裂液,温度15℃—35℃;其特征在于:由以下组份配制而成
Figure FDA00001758487200011
所述的破乳剂为聚氧乙烯丙烯十八醇醚类;
所述的pH值调节剂为氢氧化钠;
所述的激活剂为氯化亚铜或氯化亚锡;
所述的交联剂为YGB有机硼交联剂;
所述的破胶剂为过硫酸铵;
所述的粘土稳定剂为季铵盐类防膨剂;
所述的氟碳链表面活性剂;
所述的交联剂为YGB有机硼交联剂;
所述的破胶剂为过硫酸铵;
所述的杀菌剂为甲醛、戊二醛。 
2.按照权利要求1所述的超低温胍胶压裂液,其特征在于:压裂液原液的pH值9—11。
3.按照权利要求1所述的超低温胍胶压裂液,其特征在于:pH值调节剂为氢氧化钠,用量为0.02—0.03%。
4.按照权利要求1所述的超低温胍胶压裂液,其特征在于:交联剂为YGB有机硼交联剂,用量:1.5—2.5%。
5.按照权利要求1所述的超低温胍胶压裂液,其特征在于:破胶剂为过硫酸铵,用量:1.5—2%。 
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CN103881692A (zh) * 2014-03-14 2014-06-25 湖北菲特沃尔科技有限公司 一种低温压裂液
CN103937483A (zh) * 2014-03-20 2014-07-23 陕西省石油化工研究设计院 一种瓜胶清洁压裂液及其制备方法和应用
CN103965860A (zh) * 2014-04-23 2014-08-06 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 一种助排型植物胶压裂液及其制备方法
CN104927830A (zh) * 2015-06-15 2015-09-23 中国石油集团西部钻探工程有限公司 防水锁压裂液及其制备方法
CN105586026A (zh) * 2015-07-28 2016-05-18 陕西太昱科技发展有限公司 一种生物可回收的生物胶油井压裂液及其制备方法
CN104073234B (zh) * 2014-06-03 2017-03-08 中国石油天然气股份有限公司 一种基于非金属离子交联剂的压裂液及其制备方法与应用
CN106566517A (zh) * 2016-10-21 2017-04-19 长江大学 交联胍胶压裂返排液的低温破胶降粘剂及其制备方法
CN107603586A (zh) * 2017-10-24 2018-01-19 中石化石油工程技术服务有限公司 低温低伤害页岩气滑溜水压裂液及其制备方法
CN107722143A (zh) * 2017-11-02 2018-02-23 山东广浦生物科技有限公司 一种醇醚改性瓜尔胶的制备方法和压裂液体系
CN109971452A (zh) * 2019-03-19 2019-07-05 中国石油天然气集团公司 一种低温活化剂和低温压裂液体系
CN110408375A (zh) * 2019-08-23 2019-11-05 西南石油大学 一种低温瓜胶压裂液
CN112322273A (zh) * 2020-10-15 2021-02-05 中国科学院广州能源研究所 一种海底天然气水合物矿藏用压裂液
CN112727422A (zh) * 2020-12-21 2021-04-30 新疆永升能源有限责任公司 一种携砂挤液储层改造方法
CN112745822A (zh) * 2021-02-03 2021-05-04 成都劳恩普斯科技有限公司 一种聚合物压裂液高效低温破胶剂及其制备方法
CN113122219A (zh) * 2021-04-20 2021-07-16 大庆佳源信德实业有限公司 一种油田压裂用碱性液体破胶剂
CN113122218A (zh) * 2021-04-07 2021-07-16 北京化工大学 一种用于水基压裂液的中低温高效液体破胶剂

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Cited By (20)

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Publication number Priority date Publication date Assignee Title
CN103881692A (zh) * 2014-03-14 2014-06-25 湖北菲特沃尔科技有限公司 一种低温压裂液
CN103937483A (zh) * 2014-03-20 2014-07-23 陕西省石油化工研究设计院 一种瓜胶清洁压裂液及其制备方法和应用
CN103965860A (zh) * 2014-04-23 2014-08-06 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 一种助排型植物胶压裂液及其制备方法
CN104073234B (zh) * 2014-06-03 2017-03-08 中国石油天然气股份有限公司 一种基于非金属离子交联剂的压裂液及其制备方法与应用
CN104927830A (zh) * 2015-06-15 2015-09-23 中国石油集团西部钻探工程有限公司 防水锁压裂液及其制备方法
CN104927830B (zh) * 2015-06-15 2017-11-24 中国石油集团西部钻探工程有限公司 防水锁压裂液及其制备方法
CN105586026A (zh) * 2015-07-28 2016-05-18 陕西太昱科技发展有限公司 一种生物可回收的生物胶油井压裂液及其制备方法
CN106566517A (zh) * 2016-10-21 2017-04-19 长江大学 交联胍胶压裂返排液的低温破胶降粘剂及其制备方法
CN107603586A (zh) * 2017-10-24 2018-01-19 中石化石油工程技术服务有限公司 低温低伤害页岩气滑溜水压裂液及其制备方法
CN107722143A (zh) * 2017-11-02 2018-02-23 山东广浦生物科技有限公司 一种醇醚改性瓜尔胶的制备方法和压裂液体系
CN109971452A (zh) * 2019-03-19 2019-07-05 中国石油天然气集团公司 一种低温活化剂和低温压裂液体系
CN109971452B (zh) * 2019-03-19 2021-05-18 中国石油天然气集团公司 一种低温活化剂和低温压裂液体系
CN110408375A (zh) * 2019-08-23 2019-11-05 西南石油大学 一种低温瓜胶压裂液
CN110408375B (zh) * 2019-08-23 2021-06-08 西南石油大学 一种低温瓜胶压裂液
CN112322273A (zh) * 2020-10-15 2021-02-05 中国科学院广州能源研究所 一种海底天然气水合物矿藏用压裂液
WO2021169480A1 (zh) * 2020-10-15 2021-09-02 中国科学院广州能源研究所 一种海底天然气水合物矿藏用压裂液
CN112727422A (zh) * 2020-12-21 2021-04-30 新疆永升能源有限责任公司 一种携砂挤液储层改造方法
CN112745822A (zh) * 2021-02-03 2021-05-04 成都劳恩普斯科技有限公司 一种聚合物压裂液高效低温破胶剂及其制备方法
CN113122218A (zh) * 2021-04-07 2021-07-16 北京化工大学 一种用于水基压裂液的中低温高效液体破胶剂
CN113122219A (zh) * 2021-04-20 2021-07-16 大庆佳源信德实业有限公司 一种油田压裂用碱性液体破胶剂

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