井下自动分注测控技术及应用
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摘要
精细分层注水是低渗透油藏保持地层能量、提高水驱动用程度最经济有效的技术手段。针对大井组、丛式井定向井分注管柱有效期短、分层注水合格率下降快及人工作业效率低的问题,研发了分注井井下自动测控技术。该技术将一体化数控水嘴、小型化流量计、验封短节、压力测试机构及控制模块创新集成,实现自动测调和自动验封,摆脱了人工测调模式,具有集成化程度高、自动化程度高、复杂井况适应性强及分层注水合格率高等特点。在长庆姬塬油田注水开发中进行了扩大试验,分注管柱有效期延长至2年以上,无线通讯成功率100%,试验成功率95%以上,分层注水合格率90%以上,具有广阔的推广应用前景。
Fine layered water injection in low permeability reservoir is the most economic and effective way to maintain the formation energy and improve the oil production by water flood.For large pads,tubing strings in the cluster wells and directional wells have short effective periods,and there is fast decrease in stratified water injection quality,and low manual work efficiency. So automatic downhole measurement and control technology for stratified injection wells is developed. The technology will be the integration of NC faucets,small flowmeter,short pressure sealing test sub,pressure test mechanism and control modules to achieve automatic measurement and automatic sealing test,having the advantages of high integration degree,high degree of automation,strong adaptability and high qualified rate of layered water injection at Changqing. The tubing string's effective period is extended to 2 years,the wireless communication success rate up to 100%,the success rate more than 95%,the qualification rate of stratified water injection above 90%,having broad application prospects.
Fine layered water injection in low permeability reservoir is the most economic and effective way to maintain the formation energy and improve the oil production by water flood.For large pads,tubing strings in the cluster wells and directional wells have short effective periods,and there is fast decrease in stratified water injection quality,and low manual work efficiency. So automatic downhole measurement and control technology for stratified injection wells is developed. The technology will be the integration of NC faucets,small flowmeter,short pressure sealing test sub,pressure test mechanism and control modules to achieve automatic measurement and automatic sealing test,having the advantages of high integration degree,high degree of automation,strong adaptability and high qualified rate of layered water injection at Changqing. The tubing string's effective period is extended to 2 years,the wireless communication success rate up to 100%,the success rate more than 95%,the qualification rate of stratified water injection above 90%,having broad application prospects.
引文
[1]韩永林,王成玉,王海红,等.姬塬地区长8油层组浅水三角洲沉积特征[J].沉积学报.2009,21(6):56-58.
[2]张吉昌,靳海龙,梁武全,等.多元注水技术在裂缝性古潜山油藏的探索与实践[J].特种油气藏,2012,19(2):86-89.
[3]刘合,裴晓含,罗凯,等.中国油气田开发分层注水工艺技术现状与发展趋势[J].石油勘探与开发,2013,40(6):733-737.
[4]ZHOU W,XIE Z Y,LI J S,et al.The development and practice of separate layer oil production technology in Daqing Oilfield[R].SPE 30813.
[5]PEI X H,YANG Z P,BAN L,et al.History an actuality of separate layer oil production technologies in Daqing Oilfield[R].SPE 100859.
[6]范锡彦,于鑫,杨洪源,等.分层注水井分层流量及验封测试技术[J].石油机械,2007,32(10):64-65.
[7]侯光东,韩静静.长庆油田三叠系特低渗储层分层注水技术研究[J].断块油气田,2008,15(3):110-112.
[8]李林.随钻测量数据的井下短距离无线传输技术研究[J].石油钻探技术,2007,25(1):45-48.
[9]陈巍,楚栓成.短距无线通信频率共存研究[J].数字技术与应用,2011(5):65-67.
[10]曹育红,田子键.无线智能分注技术在牙刷状油藏上的应用[J].石油机械,2016,44(8):54-56.
[2]张吉昌,靳海龙,梁武全,等.多元注水技术在裂缝性古潜山油藏的探索与实践[J].特种油气藏,2012,19(2):86-89.
[3]刘合,裴晓含,罗凯,等.中国油气田开发分层注水工艺技术现状与发展趋势[J].石油勘探与开发,2013,40(6):733-737.
[4]ZHOU W,XIE Z Y,LI J S,et al.The development and practice of separate layer oil production technology in Daqing Oilfield[R].SPE 30813.
[5]PEI X H,YANG Z P,BAN L,et al.History an actuality of separate layer oil production technologies in Daqing Oilfield[R].SPE 100859.
[6]范锡彦,于鑫,杨洪源,等.分层注水井分层流量及验封测试技术[J].石油机械,2007,32(10):64-65.
[7]侯光东,韩静静.长庆油田三叠系特低渗储层分层注水技术研究[J].断块油气田,2008,15(3):110-112.
[8]李林.随钻测量数据的井下短距离无线传输技术研究[J].石油钻探技术,2007,25(1):45-48.
[9]陈巍,楚栓成.短距无线通信频率共存研究[J].数字技术与应用,2011(5):65-67.
[10]曹育红,田子键.无线智能分注技术在牙刷状油藏上的应用[J].石油机械,2016,44(8):54-56.