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1、第27卷第2期中國海上油氣V0l
2、27NO.22015年4月CHINAOFFSHOREOILANDGASApr.2015文章編號(hào):1673—1506(2015)02—0087—06DOI:10.11935/j.issn.1673—1506.2015.02.015海上油田分層注水反洗井技術(shù)研究與應(yīng)用*士口洋劉敏王立蘋楊萬有羅昌華沈瓊(中海油能源發(fā)展股份有限公司工程技術(shù)分公司天津300457)吉洋,劉敏,王立蘋,等.海上油田分層注水反洗井技術(shù)研究與應(yīng)用_J].中國海上油氣,2015,27(2):8792.jiYang,IAuMin,WangLiping,eta1.Rese
3、archandapplicationofintegratedtechnologyforzonalinjectionandbackwashinginoffshoreoilfieldsEJ]ChinaOffshoreOilandGas,2015,27(2):87—92.摘要為了解決海上油田分層注水井管柱結(jié)垢、腐蝕,油層污染、堵塞,注水壓力上升等問題,結(jié)合海上油田注水井地層條件、完井方式和生產(chǎn)管柱型式等特點(diǎn),研究設(shè)計(jì)了提升式、液控膨脹式、插入密封式等3種反洗井管柱,進(jìn)而提出了3種海上油田分層注水反洗井技術(shù)。闡述了提升式、液控膨脹式、插入密封式等3種反洗井管柱的設(shè)計(jì)原則、設(shè)計(jì)
4、關(guān)鍵點(diǎn)和管柱組成,以及3種海上油田分層注水反洗井技術(shù)的技術(shù)原理、技術(shù)參數(shù)和使用條件?,F(xiàn)場應(yīng)用表明,本文提出的3種反洗井注水管柱技術(shù)能夠在不動(dòng)注水管柱條件下實(shí)施反洗井作業(yè),達(dá)到維護(hù)注水井井筒、清洗注水管柱、提高分層注水效果的目的,目前已在綏中、渤西、渤中、遼東、蓬萊等作業(yè)區(qū)取得成功應(yīng)用,具有較好的推廣應(yīng)用價(jià)值。關(guān)鍵詞海上油田;分層注水;管柱;提升式反洗井;液控膨脹式反洗井;插入密封式反洗井中圖分類號(hào):TE5358文獻(xiàn)標(biāo)識(shí)碼:AResearchandapplicationofintegratedtechnologyforzonalinjectionandbackwashi
5、nginoffshoreoilfieldsJiYangLiuMinWangLipingYangWanyouLuoChanghuaShenQiong(CNOOCEnerTech—Drilling&ProductionCo.,Tianjin300457,China)Abstract:Tosolvetheproblemsoccurringinzonalinjectionwellsoffshore,suchasscaling,corrosion,res—ervoirdamage,blockingandinjectionpressureincrease,threetypesof
6、backwashingstringsfortheliftingmode,hydraulically—controlledexpansionmodeandinsertsealingmodewerestudiedanddesignedinlightofthecharacteristicsoftherelevantformations,completionmethodandtypeofproductionstringetc.oftheoffshoreinjectionwells.Andbasedonthat,threewaysforzonalinjectionandback
7、washingwereputforward.Thispaperelaboratedthedesignprinciples,designfeaturesandcompositionsofthetreetypesofbackwashingstrings,aswellasthetechnicalpriciples,parametersandapplicationconditionsofthethreewaysoftheintegratedtechnologyforzonalinjectionandbackwashing.Fieldapplicationsindicatedt
8、hatwiththenewtechnologybackwashingcouldbeconductedwithoutrunninginorpullingouttheinjectionstring.Withthetechnologywecanalsomaintaintheinjectionwellbore,washinjeetionstring,anden—hancezonalinjectioneffects.ThenewtechnologyhasbeensuccessfullyusedinSuizhong,Boxi,Bozhong,Liaodong,P