全通径无级滑套研制及应用
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摘要
水平井分段压裂是低渗致密油气资源有效开发的必要手段。由于储层致密物性差,需要更多的分段数来动用储量和释放产能。目前常规工具分段数有限,储层充分改造难度大,制约了低渗致密油气藏高效开发。采用"机械式啮合、唯一性匹配"的设计理念,研发了一种集成无限级、全通径、可开关、管柱一体化功能的新型滑套,研制了用于滑套关闭及重复开启的配套工具,建立了滑套工作可靠性模拟评价系统,通过400余组开启及逾1500 m~3砂冲蚀的检验,现场成功应用1188段,施工成功率100%。与同类不限级压裂技术相比,压裂施工时间缩短40%以上、作业成本可缩短50%;与常规压裂工艺井相比,气井测试产量提高60%,且实现了长水平段井生产测井,为油气藏经济高效开发、便捷生产管理提供了一种全新的技术手段。
Multistage fracturing in horizontal wells is a necessary means for the effective development of oil and gas resources in tight reservoirs. Because of the tightness and poor physical properties of the reservoirs,more stage frac is needed to tap reserves. An innovative sliding sleeve has been developed based on the design concept of mechanical meshing and unique matching,integrating infinity,full bore,switchable and integral pipe string. The matching on/off tool is also developed,and reliability evaluation system set up. It has been turned on/off over 400 times,flushed by over 1500 m~3 sands,used to frac in 1188 sections with 100% success. Compared with other counterparts,fracturing time saved over 40%, operation cost saved over50%. The tested production has been increased by 60%. It provides a new technical means for the economic and efficient development of unconventional oil and gas reservoirs.
Multistage fracturing in horizontal wells is a necessary means for the effective development of oil and gas resources in tight reservoirs. Because of the tightness and poor physical properties of the reservoirs,more stage frac is needed to tap reserves. An innovative sliding sleeve has been developed based on the design concept of mechanical meshing and unique matching,integrating infinity,full bore,switchable and integral pipe string. The matching on/off tool is also developed,and reliability evaluation system set up. It has been turned on/off over 400 times,flushed by over 1500 m~3 sands,used to frac in 1188 sections with 100% success. Compared with other counterparts,fracturing time saved over 40%, operation cost saved over50%. The tested production has been increased by 60%. It provides a new technical means for the economic and efficient development of unconventional oil and gas reservoirs.
引文
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[12]秦金立,吴姬昊,崔晓杰,等.裸眼分段压裂投球式滑套球座关键技术研究[J].石油钻探技术,2014,42(5):52-56.
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[14]Merron M,Walton Z,Fripp M.Electronic sliding sleeve for unlimited zone multistage completion system[C].//SPE Annual Technical Conference and Exhibition,9-11October,2017,San Antonio,Texas,USA DOI:https://doi.org/10.2118/187204-MS.
[15]赵轩,何顺利,刘东涛.美国页岩气藏水平井生产测井技术[J].国外油田工程,2010,26(12):55-58.
[2]贾承造,郑民,张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发,2012,39(2):129-135.
[3]陈建军,翁定为.中石油非常规储层水平井压裂技术进展[J].天然气工业,2017,37(9):79-84.
[4]余淑明,刘艳侠,武力超,等.低渗透气藏水平井开发技术难点及攻关建议—以鄂尔多斯盆地为例[J].天然气工业,2013,33(1):54-60.
[5]伊西锋.非常规油气水平井管内多级分段压裂新技术[J].石油机械,2014,42(4):62-66.
[6]Yuan F,Blanton E,Convey B A,Palmer C.Unlimited multistage frac completion system:A revolutionary ballactivated system with single size balls[C].SPE-166303-MS,2013.
[7]屈静,刘斌.水平井全通径分段压裂工艺的研究和应用[J].天然气与石油,2014,32(5):61-63.
[8]丁庆新,侯世红,杜鑫芳,等.国内水平井压裂技术研究进展[J].石油机械,2016,44(12):78-82.
[9]李敢,伊西峰,姜广彬,等.国外全通径分段压裂完井技术进展及趋势[J].钻采工艺,2015,40(4):41-44
[10]杨永青,王治华,王磊,等.无限级滑套压裂新工艺在苏里格气田的应用[J].钻采工艺,2015,38(1):62-75.
[11]杨德锴,朱玉杰,唐志勇,等.可反复开关滑套分段压裂工具的研制与应用[J].石油机械,2015,43(6):88-91.
[12]秦金立,吴姬昊,崔晓杰,等.裸眼分段压裂投球式滑套球座关键技术研究[J].石油钻探技术,2014,42(5):52-56.
[13]任勇,冯长青,胡相君,等.长庆油田水平井体积压裂工具发展浅析[J].中国石油勘探,2015,20(2):75-81.
[14]Merron M,Walton Z,Fripp M.Electronic sliding sleeve for unlimited zone multistage completion system[C].//SPE Annual Technical Conference and Exhibition,9-11October,2017,San Antonio,Texas,USA DOI:https://doi.org/10.2118/187204-MS.
[15]赵轩,何顺利,刘东涛.美国页岩气藏水平井生产测井技术[J].国外油田工程,2010,26(12):55-58.