海上热采井耐高温井下安全控制技术研究
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摘要
受关键工具耐高温、高压性能的限制,渤海油田海上稠油热采先导试验一直采用注采两趟管柱来进行注热和生产,且注热管柱未下入井下安全阀和封隔器等安全控制工具。为进一步降低安全风险,对海上油田热采井耐高温井下安全控制工艺技术进行了技术攻关。通过耐高温材质优选、结构改进及高温实验评价等多种研究手段,研制了井下安全阀、耐高温封隔器、耐高温排气阀等关键工具,耐高温井下安全控制系统整体耐温为350℃,耐压为21 MPa。该技术为海上稠油规模化开发提供了技术支撑和安全保障。
Due to restrictions imposed by heat and pressure resistance of key tools,pilot tests for thermal production of heavy oil in the offshore Bohai Oilfield deployed two pipe strings for thermal flooding and oil production individually. In addition,the pipe string for thermal flooding has no subsurface safety valve,packer or safety control devices installed. To further reduce safety risks,researches have been conducted for heat-resistant safety control devices in wells with thermal production in offshore oilfield. By selecting heat-resistant materials,structural optimization,high-temperature tests and other ways,subsurface safety valve,heat-resistant packer,heat-resistant gas-drainage values and other key tools have been developed. The newly developed heat-resistant downhole safety control system can endure high temperatures up to 350 ℃ and high pressures up to 21 MPa. The new technique may provide technical supports and safety guarantee for large-scale development of heavy oil in offshore areas.
Due to restrictions imposed by heat and pressure resistance of key tools,pilot tests for thermal production of heavy oil in the offshore Bohai Oilfield deployed two pipe strings for thermal flooding and oil production individually. In addition,the pipe string for thermal flooding has no subsurface safety valve,packer or safety control devices installed. To further reduce safety risks,researches have been conducted for heat-resistant safety control devices in wells with thermal production in offshore oilfield. By selecting heat-resistant materials,structural optimization,high-temperature tests and other ways,subsurface safety valve,heat-resistant packer,heat-resistant gas-drainage values and other key tools have been developed. The newly developed heat-resistant downhole safety control system can endure high temperatures up to 350 ℃ and high pressures up to 21 MPa. The new technique may provide technical supports and safety guarantee for large-scale development of heavy oil in offshore areas.
引文
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[26]李小猛,丁庆新,晁圣棋,等.Y441型过电缆封隔器研制[J].石油矿场机械,2016,45(6):104-106.
[2]李敬松,杨兵,张贤松,等.稠油油藏水平井复合吞吐开采技术研究[J].油气藏评价与开发,2014,4(4):42-46.
[3]魏安超,冯雪松,韩成,等.海上首口高温高压水平井小井眼打孔管下入技术[J].石油钻采工艺,2016,38(6):762-765.
[4]董星亮.南海西部高温高压井测试技术现状及展望[J].石油钻采工艺,2016,38(6):723-729,736.
[5]王通,孙永涛,白健华,等.海上耐高温井下安全控制管柱系统的研制[J].石油钻探技术,2017,45(6):49-54.
[6]李中.南海高温高压气田开发钻完井关键技术现状及展望[J].石油钻采工艺,2016,38(6):730-736.
[7]李敬松,姜杰,朱国金,等.稠油水平井多元热流体驱影响因素敏感性研究[J].特种油气藏,2014,21(5):103-108.
[8]李延杰,张艳玉,张贤松,等.海上稠油油藏蒸汽吞吐周期注汽量优化研究[J].油气地质与采收率,2014,21(5):87-89.
[9]张义堂.热力采油提高采收率技术[M].北京:石油工业出版社,2006:205-207.
[10]王贤君,刘向斌,孟建勋,等.萨北过渡带复合热载体吞吐注采参数优化[J].大庆石油地质与开发,2014,33(2):141-144.
[11]郑伟,袁忠超,田冀,等.渤海稠油不同吞吐方式效果对比及优选[J].特种油气藏,2014,21(3):79-82.
[12]阚长宾,杨进,于晓聪,等.深水高温高压井隔热测试管柱技术[J].石油钻采工艺,2016,38(6):796-800.
[13]盛磊祥,许亮斌,蒋世全,等.海上热采井完井管柱设计技术特点分析[J].海洋工程装备与技术,2014,1(02):111-115.
[14]刘花军,孙永涛,马增华,等.海上热采隔热型井下工具的研制[J].石油机械,2015,43(1):69-72,118.
[15]胡厚猛,孙永涛,刘花军,等.海上热采井防污染工艺管柱及配套工具[J].石油钻采工艺,2016,38(1):118-122.
[16]王孟江,孙迎胜,杨军虎,等.一种低密度稠油热采复合封窜剂的研制与应用[J].石油钻采工艺,2017,39(3):388-392.
[17]崔政,张建民,蔡晖,等.渤海油田多元热流体吞吐技术的现场试验[J].长江大学学报(自然科学版),2014,32(11):115-118.
[18]高尚,张璐,刘义刚,等.渤海油田聚驱受效井液气交注复合深部解堵工艺[J].石油钻采工艺,2017,39(3):375-381.
[19]唐晓旭,马跃,孙永涛.海上稠油多元热流体吞吐工艺研究及现场试验[J].中国海上油气,2011,32(3):185-188.
[20]颜帮川,李祝军,魏安超,等.海上高温高压井测试流程安全控制技术[J].石油钻采工艺,2016,38(6):791-795.
[21]佘月明,佘梅卿,申秀丽,等.超浅层稠油水平井注采工艺的研究与应用[J].石油机械,2010,38(6):56-59.
[22]胡志强,杨进,李中,等.高温高压井双封隔器管柱安全评估[J].石油钻采工艺,2017,39(3):288-292.
[23]张华,刘义刚,周法元,等.海上稠油多元热流体注采一体化关键技术研究[J].特种油气藏,2017,24(4):171-174.
[24]张梦婷,张勇.国外井下安全阀的技术现状[J].石油机械,2008,36(7):81-84.
[25]王涛,张冬梅,尚春民.井下安全阀液压控制试验系统的设计[J].液压与气动,2011,35(3):90-92.
[26]李小猛,丁庆新,晁圣棋,等.Y441型过电缆封隔器研制[J].石油矿场机械,2016,45(6):104-106.