CAJ | 학술논문

常规侧钻水平井造斜段及水平段完井管柱居中困难,导致固井水泥环厚度不均,质量较差,易发生出水、出砂等问题,进而致使侧钻水平井生产寿命较短,严重影响了单井产量.现场多使用扶正器来提高套管居中度,但是常规扶正器存在扶正效果差、破坏井壁等问题,为此研制了液压式套管扶正器.该工具原始外径小、下入安全,膨胀后外径大、扶正能力强,能够极大地提高侧钻水平井完井管柱的居中程度,改善固井质量,延长侧钻水平井的生产寿命.该类扶正器现场应用简便,不影响正常的施工程序,在辽河和冀东油田进行了多口井的现场应用,效果显著.
상규측찬수평정조사단급수평단완정관주거중곤난,도치고정수니배후도불균,질량교차,역발생출수、출사등문제,진이치사측찬수평정생산수명교단,엄중영향료단정산량.현장다사용부정기래제고투관거중도,단시상규부정기존재부정효과차、파배정벽등문제,위차연제료액압식투관부정기.해공구원시외경소、하입안전,팽창후외경대、부정능력강,능구겁대지제고측찬수평정완정관주적거중정도,개선고정질량,연장측찬수평정적생산수명.해류부정기현장응용간편,불영향정상적시공정서,재료하화기동유전진행료다구정적현장응용,효과현저.
@@@@When drilling the buildup section and horizontal section of conventional sidetracked horizontal wells, the drilling tools are?difficult?to?be?centralized,?leading?to?uneven?cement?thickness,?and?poor?cementing?quality,?resulting?in?water?and?sand?production.?The?problem?would?lead?to?low?production?rate?and?short?service?time?of?sidetracked?wells.?In?field?application,?centralizer?is?commonly?used to improve the casing centralizing degree, but conventional centralizer has poor centralizing effect and would break wellbore. Therefore, a type of Hydraulic casing centralizer was developed. The tool has small original outer diameter, safe tripping process, large expended outer diameter, and great uprighting capacity, so it can greatly improve the centralizing degress of the completion string of sidetracked horizontal wells. Furthermore, the technique can improve cementing quality, enlarge service time of sidetracked horizontal wells,?and?increase?production?rate?and?economical?effect.?The?tools?are?simple?being?applied?in?field,?with?no?passive?effect?on?normal?drilling?process.?The?tools?have?been?applied?on?many?wells?in?Liaohe?and?Jidong?fields?with?good?effect.